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Overview
Comment:merge trunk
Downloads: Tarball | ZIP archive | SQL archive
Timelines: family | ancestors | descendants | both | tip-262
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SHA3-256: 2eac67b28e1d6262f0b6cec639a3fe770bdbd9c28df9506c720b979c00324d81
User & Date: dkf 2019-05-16 21:27:17
Context
2019-05-16
22:22
Fix some tests. Add some test cases. check-in: 42f90406 user: dkf tags: tip-262
21:27
merge trunk check-in: 2eac67b2 user: dkf tags: tip-262
19:55
Fix bug [d1989fb7cf]: In Aqua the root window appears before Tk_Mainloop is called. check-in: a2e1c6c6 user: culler tags: trunk
2019-04-13
17:59
Added tests check-in: e685524c user: dkf tags: tip-262
Changes
Hide Diffs Unified Diffs Ignore Whitespace Patch

Changes to doc/CrtItemType.3.

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    Tk_ItemTranslateProc *\fItranslateProc\fR;
    Tk_ItemIndexProc *\fIindexProc\fR;
    Tk_ItemCursorProc *\fIicursorProc\fR;
    Tk_ItemSelectionProc *\fIselectionProc\fR;
    Tk_ItemInsertProc *\fIinsertProc\fR;
    Tk_ItemDCharsProc *\fIdCharsProc\fR;
    Tk_ItemType *\fInextPtr\fR;



} \fBTk_ItemType\fR;
.CE
.PP
The fields of a Tk_ItemType structure are described in more detail
later in this manual entry.
When \fBTk_CreateItemType\fR is called, its \fItypePtr\fR
argument must point to a structure with all of the fields initialized
................................................................................
.CE
.PP
The \fIcanvas\fR and \fIitemPtr\fR arguments have the usual meaning,
and \fIdeltaX\fR and \fIdeltaY\fR give the amounts that should be
added to each x and y coordinate within the item.
The type manager should adjust the item's coordinates and
update the bounding box in the item's header.








































.SS INDEXPROC
.PP
\fItypePtr\->indexProc\fR is invoked by Tk to translate a string
index specification into a numerical index, for example during the
\fBindex\fR widget command.
It is only relevant for item types that support indexable text or coordinates;
\fItypePtr\->indexProc\fR may be specified as NULL for non-textual






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    Tk_ItemTranslateProc *\fItranslateProc\fR;
    Tk_ItemIndexProc *\fIindexProc\fR;
    Tk_ItemCursorProc *\fIicursorProc\fR;
    Tk_ItemSelectionProc *\fIselectionProc\fR;
    Tk_ItemInsertProc *\fIinsertProc\fR;
    Tk_ItemDCharsProc *\fIdCharsProc\fR;
    Tk_ItemType *\fInextPtr\fR;
.VS "8.7, TIP164"
    Tk_ItemRotateProc *\fIrotateProc\fR;
.VE "8.7, TIP164"
} \fBTk_ItemType\fR;
.CE
.PP
The fields of a Tk_ItemType structure are described in more detail
later in this manual entry.
When \fBTk_CreateItemType\fR is called, its \fItypePtr\fR
argument must point to a structure with all of the fields initialized
................................................................................
.CE
.PP
The \fIcanvas\fR and \fIitemPtr\fR arguments have the usual meaning,
and \fIdeltaX\fR and \fIdeltaY\fR give the amounts that should be
added to each x and y coordinate within the item.
The type manager should adjust the item's coordinates and
update the bounding box in the item's header.
.SS ROTATEPROC
.VS "8.7, TIP164"
.PP
\fItypePtr\->rotateProc\fR is invoked by Tk to rotate a canvas item
during the \fBrotate\fR widget command.
The procedure must match the following prototype:
.PP
.CS
typedef void \fBTk_ItemRotateProc\fR(
        Tk_Canvas \fIcanvas\fR,
        Tk_Item *\fIitemPtr\fR,
        double \fIoriginX\fR,
        double \fIoriginY\fR,
        double \fIangleRad\fR);
.CE
.PP
The \fIcanvas\fR and \fIitemPtr\fR arguments have the usual meaning.
\fIoriginX\fR and \fIoriginY\fR specify an origin relative to which
the item is to be rotated, and \fIangleRad\fR gives the anticlockwise
rotation to be applied in radians.
The item should adjust the coordinates of its control points so that where
they used to have coordinates \fIx\fR and \fIy\fR, they will have new
coordinates \fIx\(fm\fR and \fIy\(fm\fR, where
.PP
.CS
\fIrelX\fR = \fIx\fR - \fIoriginX\fR
\fIrelY\fR = \fIy\fR - \fIoriginY\fR
\fIx\(fm\fR = \fIoriginX\fR + \fIrelX\fR \(mu cos(\fIangleRad\fR) + \fIrelY\fR \(mu sin(\fIangleRad\fR)
\fIy\(fm\fR = \fIoriginY\fR \(mi \fIrelX\fR \(mu sin(\fIangleRad\fR) + \fIrelY\fR \(mu cos(\fIangleRad\fR)
.CE
.PP
The control points for an item are not necessarily the coordinates provided to
the item when it is created (or via the \fItypePtr\->coordProc\fR), but could
instead be derived from them.
\fIrotateProc\fR must also update the bounding box in the item's header.
.PP
Item types do not need to provide a \fItypePtr\->rotateProc\fR. If the
\fItypePtr\->rotateProc\fR is NULL, the \fItypePtr\->coordProc\fR will be
used instead to retrieve and update the list of coordinates.
.VE "8.7, TIP164"
.SS INDEXPROC
.PP
\fItypePtr\->indexProc\fR is invoked by Tk to translate a string
index specification into a numerical index, for example during the
\fBindex\fR widget command.
It is only relevant for item types that support indexable text or coordinates;
\fItypePtr\->indexProc\fR may be specified as NULL for non-textual

Changes to doc/GetScroll.3.

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.SH NAME
Tk_GetScrollInfoObj, Tk_GetScrollInfo \- parse arguments for scrolling commands
.SH SYNOPSIS
.nf
\fB#include <tk.h>\fR
.sp
int
\fBTk_GetScrollInfoObj(\fIinterp, objc, objv, dblPtr, intPtr\fB)\fR
.sp
int
\fBTk_GetScrollInfo(\fIinterp, argc, argv, dblPtr, intPtr\fB)\fR
.SH ARGUMENTS
.AS "Tcl_Interp" *fractionPtr
.AP Tcl_Interp *interp in
Interpreter to use for error reporting.
.AP int objc in
Number of Tcl_Obj's in \fIobjv\fR array.
.AP "Tcl_Obj *const" objv[] in






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.SH NAME
Tk_GetScrollInfoObj, Tk_GetScrollInfo \- parse arguments for scrolling commands
.SH SYNOPSIS
.nf
\fB#include <tk.h>\fR
.sp
int
\fBTk_GetScrollInfoObj(\fIinterp, objc, objv, fractionPtr, stepsPtr\fB)\fR
.sp
int
\fBTk_GetScrollInfo(\fIinterp, argc, argv, fractionPtr, stepsPtr\fB)\fR
.SH ARGUMENTS
.AS "Tcl_Interp" *fractionPtr
.AP Tcl_Interp *interp in
Interpreter to use for error reporting.
.AP int objc in
Number of Tcl_Obj's in \fIobjv\fR array.
.AP "Tcl_Obj *const" objv[] in

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It is possible to adjust the origin of the canvas
coordinate system relative to the origin of the window using the
\fBxview\fR and \fByview\fR widget commands; this is typically used
for scrolling.
Canvases do not support scaling or rotation of the canvas coordinate
system relative to the window coordinate system.
.PP
Individual items may be moved or scaled using widget commands




described below, but they may not be rotated.
.PP
Note that the default origin of the canvas's visible area is
coincident with the origin for the whole window as that makes bindings
using the mouse position easier to work with; you only need to use the
\fBcanvasx\fR and \fBcanvasy\fR widget commands if you adjust the
origin of the visible area. However, this also means that any focus
ring (as controlled by the \fB\-highlightthickness\fR option) and
................................................................................
factor can also be given and the photo image will be enlarged. The image background
will be filled with the canvas background colour. The canvas widget does not need to
be mapped for this widget command to work, but at least one of it's ancestors must be
mapped.
This command returns an empty string.
.TP
\fIpathName \fBimove \fItagOrId index x y\fR
.VS 8.6
This command causes the \fIindex\fR'th coordinate of each of the items
indicated by \fItagOrId\fR to be relocated to the location (\fIx\fR,\fIy\fR).
Each item interprets \fIindex\fR independently according to the rules
described in \fBINDICES\fR above. Out of the standard set of items, only line
and polygon items may have their coordinates relocated this way.
.VE 8.6
.TP
\fIpathName \fBindex \fItagOrId index\fR
.
This command returns a decimal string giving the numerical index
within \fItagOrId\fR corresponding to \fIindex\fR.
\fIIndex\fR gives a textual description of the desired position
as described in \fBINDICES\fR above.
................................................................................
Move each of the items given by \fItagOrId\fR in the canvas coordinate
space by adding \fIxAmount\fR to the x-coordinate of each point
associated with the item and \fIyAmount\fR to the y-coordinate of
each point associated with the item.
This command returns an empty string.
.TP
\fIpathName \fBmoveto \fItagOrId xPos yPos\fR
.VS 8.6
Move the items given by \fItagOrId\fR in the canvas coordinate
space so that the first coordinate pair of the bottommost item with
tag \fItagOrId\fR is located at
position (\fIxPos\fR,\fIyPos\fR). \fIxPos\fR and \fIyPos\fR may be
the empty string, in which case the corresponding coordinate
will be unchanged. All items matching
\fItagOrId\fR remain in the same positions relative to each other.
This command returns an empty string.
.VE 8.6
.TP
\fIpathName \fBpostscript \fR?\fIoption value option value ...\fR?
.
Generate a Postscript representation for part or all of the canvas.
If the \fB\-file\fR option is specified then the Postscript is written
to a file and an empty string is returned; otherwise the Postscript
is returned as the result of the command.
................................................................................
Note: this command has no effect on window items. Window items always
obscure other item types, and the stacking order of window items is
determined by the \fBraise\fR command and \fBlower\fR command, not the
\fBraise\fR widget command and \fBlower\fR widget command for canvases.
.RE
.TP
\fIpathName \fBrchars \fItagOrId first last string\fR
.VS 8.6
This command causes the text or coordinates between \fIfirst\fR and \fIlast\fR
for each of the items indicated by \fItagOrId\fR to be replaced by
\fIstring\fR. Each item interprets \fIfirst\fR and \fIlast\fR independently
according to the rules described in \fBINDICES\fR above. Out of the standard
set of items, text items support this operation by altering their text as
directed, and line and polygon items support this operation by altering their
coordinate list (in which case \fIstring\fR should be a list of coordinates to
use as a replacement). The other items ignore this operation.
.VE 8.6




















.TP
\fIpathName \fBscale \fItagOrId xOrigin yOrigin xScale yScale\fR
.
Rescale the coordinates of all of the items given by \fItagOrId\fR in canvas
coordinate space.
\fIXOrigin\fR and \fIyOrigin\fR identify the origin for the scaling
operation and \fIxScale\fR and \fIyScale\fR identify the scale
................................................................................
\fB\-stipple\fR	\fB\-activestipple\fR
\fB\-disabledstipple\fR	\fB\-state\fR
\fB\-tags\fR
.DE
The following extra options are supported for text items:
.TP
\fB\-angle \fIrotationDegrees\fR
.VS 8.6
\fIRotationDegrees\fR tells how many degrees to rotate the text anticlockwise
about the positioning point for the text; it may have any floating-point value
from 0.0 to 360.0. For example, if \fIrotationDegrees\fR is \fB90\fR, then the
text will be drawn vertically from bottom to top.
This option defaults to \fB0.0\fR.
.VE 8.6
.TP
\fB\-font \fIfontName\fR
Specifies the font to use for the text item.
\fIFontName\fR may be any string acceptable to \fBTk_GetFont\fR.
If this option is not specified, it defaults to a system-dependent
font.
.TP






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It is possible to adjust the origin of the canvas
coordinate system relative to the origin of the window using the
\fBxview\fR and \fByview\fR widget commands; this is typically used
for scrolling.
Canvases do not support scaling or rotation of the canvas coordinate
system relative to the window coordinate system.
.PP
Individual items may be moved, scaled
.VS "8.7, TIP164"
or rotated
.VE "8.7, TIP164"
using widget commands
described below.
.PP
Note that the default origin of the canvas's visible area is
coincident with the origin for the whole window as that makes bindings
using the mouse position easier to work with; you only need to use the
\fBcanvasx\fR and \fBcanvasy\fR widget commands if you adjust the
origin of the visible area. However, this also means that any focus
ring (as controlled by the \fB\-highlightthickness\fR option) and
................................................................................
factor can also be given and the photo image will be enlarged. The image background
will be filled with the canvas background colour. The canvas widget does not need to
be mapped for this widget command to work, but at least one of it's ancestors must be
mapped.
This command returns an empty string.
.TP
\fIpathName \fBimove \fItagOrId index x y\fR
.
This command causes the \fIindex\fR'th coordinate of each of the items
indicated by \fItagOrId\fR to be relocated to the location (\fIx\fR,\fIy\fR).
Each item interprets \fIindex\fR independently according to the rules
described in \fBINDICES\fR above. Out of the standard set of items, only line
and polygon items may have their coordinates relocated this way.

.TP
\fIpathName \fBindex \fItagOrId index\fR
.
This command returns a decimal string giving the numerical index
within \fItagOrId\fR corresponding to \fIindex\fR.
\fIIndex\fR gives a textual description of the desired position
as described in \fBINDICES\fR above.
................................................................................
Move each of the items given by \fItagOrId\fR in the canvas coordinate
space by adding \fIxAmount\fR to the x-coordinate of each point
associated with the item and \fIyAmount\fR to the y-coordinate of
each point associated with the item.
This command returns an empty string.
.TP
\fIpathName \fBmoveto \fItagOrId xPos yPos\fR
.
Move the items given by \fItagOrId\fR in the canvas coordinate
space so that the first coordinate pair of the bottommost item with
tag \fItagOrId\fR is located at
position (\fIxPos\fR,\fIyPos\fR). \fIxPos\fR and \fIyPos\fR may be
the empty string, in which case the corresponding coordinate
will be unchanged. All items matching
\fItagOrId\fR remain in the same positions relative to each other.
This command returns an empty string.

.TP
\fIpathName \fBpostscript \fR?\fIoption value option value ...\fR?
.
Generate a Postscript representation for part or all of the canvas.
If the \fB\-file\fR option is specified then the Postscript is written
to a file and an empty string is returned; otherwise the Postscript
is returned as the result of the command.
................................................................................
Note: this command has no effect on window items. Window items always
obscure other item types, and the stacking order of window items is
determined by the \fBraise\fR command and \fBlower\fR command, not the
\fBraise\fR widget command and \fBlower\fR widget command for canvases.
.RE
.TP
\fIpathName \fBrchars \fItagOrId first last string\fR
.
This command causes the text or coordinates between \fIfirst\fR and \fIlast\fR
for each of the items indicated by \fItagOrId\fR to be replaced by
\fIstring\fR. Each item interprets \fIfirst\fR and \fIlast\fR independently
according to the rules described in \fBINDICES\fR above. Out of the standard
set of items, text items support this operation by altering their text as
directed, and line and polygon items support this operation by altering their
coordinate list (in which case \fIstring\fR should be a list of coordinates to
use as a replacement). The other items ignore this operation.
.TP
\fIpathName \fBrotate \fItagOrId xOrigin yOrigin angle\fR
.VS "8.7, TIP164"
Rotate the coordinates of all of the items given by \fItagOrId\fR in canvas
coordinate space.
\fIXOrigin\fR and \fIyOrigin\fR identify the origin for the rotation
operation and \fIangle\fR identifies the amount to rotate the coordinates
anticlockwise, in degrees. (Negative values rotate clockwise.)
This command returns an empty string.
.RS
.PP
Implementation note: not all item types work the same with rotations. In
particular,\fB bitmap\fR,\fB image\fR,\fB text\fR and\fB window\fR items only
rotate their anchor points and do not rotate the items themselves about those
points, and the \fBarc\fR, \fBoval\fR and \fBrectangle\fR types rotate about a
computed center point instead of moving the bounding box coordinates directly.
.PP
Some items (currently \fBarc\R and\fB text\fR) have angles in their options;
this command \fIdoes not\fR affect those options.
.RE
.VE "8.7, TIP164"
.TP
\fIpathName \fBscale \fItagOrId xOrigin yOrigin xScale yScale\fR
.
Rescale the coordinates of all of the items given by \fItagOrId\fR in canvas
coordinate space.
\fIXOrigin\fR and \fIyOrigin\fR identify the origin for the scaling
operation and \fIxScale\fR and \fIyScale\fR identify the scale
................................................................................
\fB\-stipple\fR	\fB\-activestipple\fR
\fB\-disabledstipple\fR	\fB\-state\fR
\fB\-tags\fR
.DE
The following extra options are supported for text items:
.TP
\fB\-angle \fIrotationDegrees\fR
.
\fIRotationDegrees\fR tells how many degrees to rotate the text anticlockwise
about the positioning point for the text; it may have any floating-point value
from 0.0 to 360.0. For example, if \fIrotationDegrees\fR is \fB90\fR, then the
text will be drawn vertically from bottom to top.
This option defaults to \fB0.0\fR.

.TP
\fB\-font \fIfontName\fR
Specifies the font to use for the text item.
\fIFontName\fR may be any string acceptable to \fBTk_GetFont\fR.
If this option is not specified, it defaults to a system-dependent
font.
.TP

Changes to doc/colors.n.

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yellow4	139	139 	0
YellowGreen	154	205 	50
.DE
.SH "PORTABILITY ISSUES"
.TP
\fBMac OS X\fR
.
On Mac OS X, the following additional system colors are available
(note that the actual color values depend on the currently active OS theme,
and typically many of these will in fact be patterns rather than pure colors):

.RS
.DS
systemActiveAreaFill
systemAlertActiveText
systemAlertBackgroundActive
systemAlertBackgroundInactive
systemAlertInactiveText
................................................................................
systemRootMenuActiveText
systemRootMenuDisabledText
systemRootMenuSelectedText
systemScrollBarDelimiterActive
systemScrollBarDelimiterInactive
systemSecondaryGroupBoxBackground
systemSecondaryHighlightColor

systemSheetBackground
systemSheetBackgroundOpaque
systemSheetBackgroundTransparent
systemStaticAreaFill
systemSystemDetailText
systemTabFrontActiveText
systemTabFrontInactiveText
................................................................................
systemWhiteText
systemWindowBody
systemWindowHeaderActiveText
systemWindowHeaderBackground
systemWindowHeaderInactiveText
.DE
.RE































.TP


\fBWindows\fR
.
On Windows, the following additional system colors are available
(note that the actual color values depend on the currently active OS theme):
.RS
.DS
.ta 6c






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yellow4	139	139 	0
YellowGreen	154	205 	50
.DE
.SH "PORTABILITY ISSUES"
.TP
\fBMac OS X\fR
.
On macOS, the following additional system colors are available.
This first group contains all colors available in the HIToolbox library.
(Note that in some cases the actual color values may depend on the
current Appearance.)
.RS
.DS
systemActiveAreaFill
systemAlertActiveText
systemAlertBackgroundActive
systemAlertBackgroundInactive
systemAlertInactiveText
................................................................................
systemRootMenuActiveText
systemRootMenuDisabledText
systemRootMenuSelectedText
systemScrollBarDelimiterActive
systemScrollBarDelimiterInactive
systemSecondaryGroupBoxBackground
systemSecondaryHighlightColor
systemSelectedTabTextColor
systemSheetBackground
systemSheetBackgroundOpaque
systemSheetBackgroundTransparent
systemStaticAreaFill
systemSystemDetailText
systemTabFrontActiveText
systemTabFrontInactiveText
................................................................................
systemWhiteText
systemWindowBody
systemWindowHeaderActiveText
systemWindowHeaderBackground
systemWindowHeaderInactiveText
.DE
.RE
.
The second group of MacOS colors below are based on Apple's "semantic"
NScolors.  On OSX 10.14 (Mojave) and later these colors change value
when Dark Mode is enabled.  However, the change is only observable
when the Apple window manager is drawing to the screen. So the
\fBwinfo rgb\fR command will return the color coordinates used in the
standard Aqua mode, even if Dark Mode has been selected in the system
preferences.  The numbered systemWindowBackgroundColors are used in
the \fBttk::notebook\fR and \fBttk::labelframe\fR widgets to provide a
contrasting background.  Each numbered color constrasts with its
predecessor.
.RS
.DS
systemControlAccentColor
systemControlTextColor
systemDisabledControlTextColor
systemLabelColor
systemSelectedTextBackgroundColor
systemSelectedTextColor
systemTextBackgroundColor
systemTextColor
systemWindowBackgroundColor
systemWindowBackgroundColor1
systemWindowBackgroundColor2
systemWindowBackgroundColor3
systemWindowBackgroundColor4
systemWindowBackgroundColor5
systemWindowBackgroundColor6
systemWindowBackgroundColor7
.DE
.RE
.TP


\fBWindows\fR
.
On Windows, the following additional system colors are available
(note that the actual color values depend on the currently active OS theme):
.RS
.DS
.ta 6c

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\fBpng \-alpha\fI alphaValue\fR
.
The option has effect when reading image data from a file. Specifies
an additional alpha filtering for the overall image, which allows the
background on which the image is displayed to show through.  This
usually also has the effect of desaturating the image.  The
\fIalphaValue\fR must be between 0.0 and 1.0.





















































.VE 8.6
.VS 8.7
.SH "COLOR FORMATS"
.PP
The default image handler can represent/parse color and alpha values
of a pixel in one of the formats listed below. If a color format does
not contain transparency information, full opacity is assumed.  The






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\fBpng \-alpha\fI alphaValue\fR
.
The option has effect when reading image data from a file. Specifies
an additional alpha filtering for the overall image, which allows the
background on which the image is displayed to show through.  This
usually also has the effect of desaturating the image.  The
\fIalphaValue\fR must be between 0.0 and 1.0.
.TP
\fBsvg \-dpi\fI dpiValue\fB \-scale\fI scaleValue\fB \-unit\fI unitValue\fR
.
\fIdpiValue\fR is used in conversion between given coordinates and
screen resolution. The value must be greater than 0 and the default
value is 96.
\fIscaleValue\fR is used to scale the resulting image. The value must
be greater than 0 and the default value is 1.
\fIunitValue\fR is the unit of all coordinates in the SVG data.
Available units are px (default, coordinates in pixel), pt (1/72 inch),
pc (12 pt), mm , cm and in.
The svg format supports a wide range of SVG features, but the
full SVG standard is not available, for instance the 'text' feature
is missing and silently ignores when reading the SVG data.
The supported SVG features are:
.
.RS
\fB elements:\fR g, path, rect, circle, ellipse, line, polyline, polygon,
linearGradient, radialGradient, stop, defs, svg, style
.PP
\fB attributes:\fR width, height, viewBox,
preserveAspectRatio with none, xMin, xMid, xMax, yMin, yMid, yMax, slice
.PP
\fB gradient attributes:\fR gradientUnits with objectBoundingBox,
gradientTransform, cx, cy, r fx, fy x1, y1, x2, y2
spreadMethod with pad, reflect or repeat,
xlink:href
.PP
\fB poly attributes: \fR points
.PP
\fB line attributes: \fR x1, y1, x2, y2
.PP
\fB ellipse attributes: \fR cx, cy, rx, ry
.PP
\fB circle attributes: \fR cx, cy, r
.PP
\fB rectangle attributes: \fR x, y, width, height, rx, ry
.PP
\fB path attributes: \fR d with m, M, l, L, h, H, v, V, c, C, s, S, q, Q, t, T, a, A, z, Z
.PP
\fB style attributes: \fR display with none, visibility, hidden, visible,
fill with nonzero and evenodd, opacity, fill-opacity,
stroke, stroke-width, stroke-dasharray, stroke-dashoffset, stroke-opacity,
stroke-linecap with butt, round and square,
stroke-linejoin with miter, round and  bevel, stroke-miterlimit
fill-rule, font-size,
transform with matrix, translate, scale, rotate, skewX and  skewY,
stop-color, stop-opacity, offset, id, class
.RE
.
Currently only SVG images reading and conversion into (pixel-based
format) photos is supported: Tk does not (yet) support bundling photo
images in SVG vector graphics.
.VE 8.6
.VS 8.7
.SH "COLOR FORMATS"
.PP
The default image handler can represent/parse color and alpha values
of a pixel in one of the formats listed below. If a color format does
not contain transparency information, full opacity is assumed.  The

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.PP
Dynamic states: \fBdisabled\fP, \fBfocus\fP, \fBpressed\fP, \fBreadonly\fP.
.PP
\fBTCombobox\fP styling options configurable with \fBttk::style\fP
are:
.PP
\fB\-arrowcolor\fP \fIcolor\fP


.br
\fB\-background\fP \fIcolor\fP
.br
\fB\-bordercolor\fP \fIcolor\fP
.br
\fB\-darkcolor\fP \fIcolor\fP
.br






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.PP
Dynamic states: \fBdisabled\fP, \fBfocus\fP, \fBpressed\fP, \fBreadonly\fP.
.PP
\fBTCombobox\fP styling options configurable with \fBttk::style\fP
are:
.PP
\fB\-arrowcolor\fP \fIcolor\fP
.br
\fB\-arrowsize\fP \fIamount\fP
.br
\fB\-background\fP \fIcolor\fP
.br
\fB\-bordercolor\fP \fIcolor\fP
.br
\fB\-darkcolor\fP \fIcolor\fP
.br

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.TP
\fIpathName \fBvalidate\fR
Force revalidation, independent of the conditions specified
by the \fB\-validate\fR option.
Returns 0 if validation fails, 1 if it succeeds.
Sets or clears the \fBinvalid\fR state accordingly.
See \fBVALIDATION\fR below for more details.
.TP
\fIpathName \fBxview \fIargs\fR
This command is used to query and change the horizontal position of the
text in the widget's window.  It can take any of the following
forms:
.RS
.TP
\fIpathName \fBxview\fR
Returns a list containing two elements.
Each element is a real fraction between 0 and 1; together they describe
the horizontal span that is visible in the window.
For example, if the first element is .2 and the second element is .6,
20% of the entry's text is off-screen to the left, the middle 40% is visible
in the window, and 40% of the text is off-screen to the right.
These are the same values passed to scrollbars via the \fB\-xscrollcommand\fR
option.
.TP
\fIpathName \fBxview\fR \fIindex\fR
Adjusts the view in the window so that the character given by \fIindex\fR
is displayed at the left edge of the window.
.TP
\fIpathName \fBxview moveto\fI fraction\fR
Adjusts the view in the window so that the character \fIfraction\fR of the
way through the text appears at the left edge of the window.
\fIFraction\fR must be a fraction between 0 and 1.
.TP
\fIpathName \fBxview scroll \fInumber what\fR
This command shifts the view in the window left or right according to
\fInumber\fR and \fIwhat\fR.
\fINumber\fR must be an integer.
\fIWhat\fR must be either \fBunits\fR or \fBpages\fR.
'\" or an abbreviation of one of these, but we don't document that.
If \fIwhat\fR is \fBunits\fR, the view adjusts left or right by
\fInumber\fR average-width characters on the display;  if it is
\fBpages\fR then the view adjusts by \fInumber\fR screenfuls.
If \fInumber\fR is negative then characters farther to the left
become visible;  if it is positive then characters farther to the right
become visible.
.RE
.PP
The entry widget also supports the following generic \fBttk::widget\fR
widget subcommands (see \fIttk::widget(n)\fR for details):
.DS
.ta 5.5c 11c
\fBcget\fR	\fBconfigure\fR	\fBidentify\fR
\fBinstate\fR	\fBstate\fR
.DE
.SH VALIDATION
.PP
The \fB\-validate\fR, \fB\-validatecommand\fR, and \fB\-invalidcommand\fR
options are used to enable entry widget validation.
.SS "VALIDATION MODES"
.PP






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.TP
\fIpathName \fBvalidate\fR
Force revalidation, independent of the conditions specified
by the \fB\-validate\fR option.
Returns 0 if validation fails, 1 if it succeeds.
Sets or clears the \fBinvalid\fR state accordingly.
See \fBVALIDATION\fR below for more details.







































.PP
The entry widget also supports the following generic \fBttk::widget\fR
widget subcommands (see \fIttk::widget(n)\fR for details):
.DS
.ta 5.5c 11c
\fBcget\fR	\fBconfigure\fR	\fBidentify\fR
\fBinstate\fR	\fBstate\fR	\fBxview\fR
.DE
.SH VALIDATION
.PP
The \fB\-validate\fR, \fB\-validatecommand\fR, and \fB\-invalidcommand\fR
options are used to enable entry widget validation.
.SS "VALIDATION MODES"
.PP

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\fIpathName \fBcoords \fR?\fIvalue\fR?
.
Get the coordinates corresponding to \fIvalue\fR, or the coordinates
corresponding to the current value of the \fB\-value\fR option if \fIvalue\fR
is omitted.
.SH "STYLING OPTIONS"
.PP
The class name for a \fBttk::scale\fP is \fBTProgressbar\fP.
.PP
Dynamic states: \fBactive\fP.
.PP
\fBTProgressbar\fP styling options configurable with \fBttk::style\fP
are:
.PP
\fB\-background\fP \fIcolor\fP






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\fIpathName \fBcoords \fR?\fIvalue\fR?
.
Get the coordinates corresponding to \fIvalue\fR, or the coordinates
corresponding to the current value of the \fB\-value\fR option if \fIvalue\fR
is omitted.
.SH "STYLING OPTIONS"
.PP
The class name for a \fBttk::scale\fP is \fBTScale\fP.
.PP
Dynamic states: \fBactive\fP.
.PP
\fBTProgressbar\fP styling options configurable with \fBttk::style\fP
are:
.PP
\fB\-background\fP \fIcolor\fP

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\fIfirst\fR and \fIlast\fR are real fractions between 0 and 1.
.TP
\fIpathName \fBstate\fR ?\fIstateSpec\fR?
Modify or query the widget state; see \fIttk::widget(n)\fR.
.SH "INTERNAL COMMANDS"
.PP
The following widget commands are used internally
by the TScrollbar widget class bindings.
.TP
\fIpathName \fBdelta \fIdeltaX deltaY\fR
Returns a real number indicating the fractional change in
the scrollbar setting that corresponds to a given change
in thumb position.  For example, if the scrollbar is horizontal,
the result indicates how much the scrollbar setting must change
to move the thumb \fIdeltaX\fR pixels to the right (\fIdeltaY\fR is
................................................................................
ttk::scrollbar $f.vsb \-orient vertical \-command [list $f.t yview]
text $f.t \-xscrollcommand [list $f.hsb set] \-yscrollcommand [list $f.vsb set]
grid $f.t \-row 0 \-column 0 \-sticky nsew
grid $f.vsb \-row 0 \-column 1 \-sticky nsew
grid $f.hsb \-row 1 \-column 0 \-sticky nsew
grid columnconfigure $f 0 \-weight 1
grid rowconfigure $f 0 \-weight 1

.CE
.SH "STYLING OPTIONS"
.PP
The class name for a \fBttk::scrollbar\fP is \fBTScrollbar\fP.
.PP
Dynamic states: \fBactive\fP, \fBdisabled\fP.
.PP


\fBTScrollbar\fP styling options configurable with \fBttk::style\fP
are:
.PP
\fB\-arrowcolor\fP \fIcolor\fP


.br
\fB\-background\fP \fIcolor\fP
.br
\fB\-bordercolor\fP \fIcolor\fP
.br
\fB\-darkcolor\fP \fIcolor\fP
.br
\fB\-foreground\fP \fIcolor\fP
.br


\fB\-lightcolor\fP \fIcolor\fP
.br
\fB\-troughcolor\fP \fIcolor\fP
.PP
Some options are only available for specific themes.
.PP
See the \fBttk::style\fP manual page for information on how to configure
ttk styles.






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\fIfirst\fR and \fIlast\fR are real fractions between 0 and 1.
.TP
\fIpathName \fBstate\fR ?\fIstateSpec\fR?
Modify or query the widget state; see \fIttk::widget(n)\fR.
.SH "INTERNAL COMMANDS"
.PP
The following widget commands are used internally
by the \fBTScrollbar\fP widget class bindings.
.TP
\fIpathName \fBdelta \fIdeltaX deltaY\fR
Returns a real number indicating the fractional change in
the scrollbar setting that corresponds to a given change
in thumb position.  For example, if the scrollbar is horizontal,
the result indicates how much the scrollbar setting must change
to move the thumb \fIdeltaX\fR pixels to the right (\fIdeltaY\fR is
................................................................................
ttk::scrollbar $f.vsb \-orient vertical \-command [list $f.t yview]
text $f.t \-xscrollcommand [list $f.hsb set] \-yscrollcommand [list $f.vsb set]
grid $f.t \-row 0 \-column 0 \-sticky nsew
grid $f.vsb \-row 0 \-column 1 \-sticky nsew
grid $f.hsb \-row 1 \-column 0 \-sticky nsew
grid columnconfigure $f 0 \-weight 1
grid rowconfigure $f 0 \-weight 1
pack $f
.CE
.SH "STYLING OPTIONS"
.PP
The class name for a \fBttk::scrollbar\fP is \fBTScrollbar\fP.
.PP
Dynamic states: \fBactive\fP, \fBdisabled\fP.
.PP
\fBTScrollbar\fP (or more specifically \fBVertical.TScrollbar\fP and
\fBHorizontal.TScrollbar\fP) styling options that are configurable with
\fBttk::style\fP are:

.PP
\fB\-arrowcolor\fP \fIcolor\fP
.br
\fB\-arrowsize\fP \fIamount\fP
.br
\fB\-background\fP \fIcolor\fP
.br
\fB\-bordercolor\fP \fIcolor\fP
.br
\fB\-darkcolor\fP \fIcolor\fP (color of the dark part of the 3D relief)
.br
\fB\-foreground\fP \fIcolor\fP
.br
\fB\-gripcount\fP \fIcount\fP (number of lines on the thumb)
.br
\fB\-lightcolor\fP \fIcolor\fP (color of the light part of the 3D relief)
.br
\fB\-troughcolor\fP \fIcolor\fP
.PP
Some options are only available for specific themes.
.PP
See the \fBttk::style\fP manual page for information on how to configure
ttk styles.

Changes to doc/ttk_treeview.n.

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.TP
\fIpathName \fBtag remove \fItag\fR ?\fIitems\fR?
Removes the specified \fItag\fR from each of the listed \fIitems\fR.
If \fIitems\fR is omitted, removes \fItag\fR from each item in the tree.
If \fItag\fR is not present for a particular item,
then the \fB\-tags\fR for that item are unchanged.
.RE
.TP
\fIpathName \fBxview \fIargs\fR
Standard command for horizontal scrolling; see \fIwidget(n)\fR.
.TP
\fIpathName \fByview \fIargs\fR
Standard command for vertical scrolling; see \fIttk::widget(n)\fR.

.SH "ITEM OPTIONS"
.PP
The following item options may be specified for items
in the \fBinsert\fR and \fBitem\fR widget commands.
.OP \-text text Text
The textual label to display for the item.
.OP \-image image Image






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.TP
\fIpathName \fBtag remove \fItag\fR ?\fIitems\fR?
Removes the specified \fItag\fR from each of the listed \fIitems\fR.
If \fIitems\fR is omitted, removes \fItag\fR from each item in the tree.
If \fItag\fR is not present for a particular item,
then the \fB\-tags\fR for that item are unchanged.
.RE
.PP
The treeview widget also supports the following generic \fBttk::widget\fR
widget subcommands (see \fIttk::widget(n)\fR for details):
.DS
.ta 5.5c 11c
\fBxview\fR	\fByview\fR
.DE
.SH "ITEM OPTIONS"
.PP
The following item options may be specified for items
in the \fBinsert\fR and \fBitem\fR widget commands.
.OP \-text text Text
The textual label to display for the item.
.OP \-image image Image

Changes to doc/ttk_widget.n.

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set changes [\fIpathName \fRstate \fIspec\fR]
\fIpathName \fRstate $changes
.CE
will restore \fIpathName\fR to the original state.
If \fIstateSpec\fR is not specified,
returns a list of the currently-enabled state flags.
.RE














































































.SH "WIDGET STATES"
The widget state is a bitmap of independent state flags.
Widget state flags include:
.TP
\fBactive\fR
.
The mouse cursor is over the widget






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set changes [\fIpathName \fRstate \fIspec\fR]
\fIpathName \fRstate $changes
.CE
will restore \fIpathName\fR to the original state.
If \fIstateSpec\fR is not specified,
returns a list of the currently-enabled state flags.
.RE
.TP
\fIpathName \fBxview \fIargs\fR
This command is used to query and change the horizontal position of the
content in the widget's window.  It can take any of the following
forms:
.RS
.TP
\fIpathName \fBxview\fR
Returns a list containing two elements.
Each element is a real fraction between 0 and 1; together they describe
the horizontal span that is visible in the window.
For example, if the first element is .2 and the second element is .6,
20% of the widget's content is off-screen to the left, the middle 40% is visible
in the window, and 40% of the content is off-screen to the right.
These are the same values passed to scrollbars via the \fB\-xscrollcommand\fR
option.
.TP
\fIpathName \fBxview\fR \fIindex\fR
Adjusts the view in the window so that the content given by \fIindex\fR
is displayed at the left edge of the window.
.TP
\fIpathName \fBxview moveto\fI fraction\fR
Adjusts the view in the window so that the character \fIfraction\fR of the
way through the content appears at the left edge of the window.
\fIFraction\fR must be a fraction between 0 and 1.
.TP
\fIpathName \fBxview scroll \fInumber what\fR
This command shifts the view in the window left or right according to
\fInumber\fR and \fIwhat\fR.
\fINumber\fR must be an integer.
\fIWhat\fR must be either \fBunits\fR or \fBpages\fR.
'\" or an abbreviation of one of these, but we don't document that.
If \fIwhat\fR is \fBunits\fR, the view adjusts left or right by
\fInumber\fR average-width characters on the display;  if it is
\fBpages\fR then the view adjusts by \fInumber\fR screenfuls.
If \fInumber\fR is negative then characters farther to the left
become visible;  if it is positive then characters farther to the right
become visible.
.RE
.TP
\fIpathName \fByview \fIargs\fR
This command is used to query and change the vertical position of the
content in the widget's window.  It can take any of the following
forms:
.RS
.TP
\fIpathName \fByview\fR
Returns a list containing two elements.
Each element is a real fraction between 0 and 1; together they describe
the vertical span that is visible in the window.
For example, if the first element is .2 and the second element is .6,
20% of the widget's content is off-screen to the top, the middle 40% is visible
in the window, and 40% of the content is off-screen to the bottom.
These are the same values passed to scrollbars via the \fB\-yscrollcommand\fR
option.
.TP
\fIpathName \fByview\fR \fIindex\fR
Adjusts the view in the window so that the content given by \fIindex\fR
is displayed at the top edge of the window.
.TP
\fIpathName \fByview moveto\fI fraction\fR
Adjusts the view in the window so that the item \fIfraction\fR of the
way through the content appears at the top edge of the window.
\fIFraction\fR must be a fraction between 0 and 1.
.TP
\fIpathName \fByview scroll \fInumber what\fR
This command shifts the view in the window up or down according to
\fInumber\fR and \fIwhat\fR.
\fINumber\fR must be an integer.
\fIWhat\fR must be either \fBunits\fR or \fBpages\fR.
'\" or an abbreviation of one of these, but we don't document that.
If \fIwhat\fR is \fBunits\fR, the view adjusts up or down by
\fInumber\fR average-width characters on the display;  if it is
\fBpages\fR then the view adjusts by \fInumber\fR screenfuls.
If \fInumber\fR is negative then items farther to the top
become visible;  if it is positive then items farther to the bottom
become visible.
.RE
.SH "WIDGET STATES"
The widget state is a bitmap of independent state flags.
Widget state flags include:
.TP
\fBactive\fR
.
The mouse cursor is over the widget

Added generic/nanosvg.h.





















































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































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/*
 * Copyright (c) 2013-14 Mikko Mononen [email protected]
 *
 * This software is provided 'as-is', without any express or implied
 * warranty.  In no event will the authors be held liable for any damages
 * arising from the use of this software.
 *
 * Permission is granted to anyone to use this software for any purpose,
 * including commercial applications, and to alter it and redistribute it
 * freely, subject to the following restrictions:
 *
 * 1. The origin of this software must not be misrepresented; you must not
 * claim that you wrote the original software. If you use this software
 * in a product, an acknowledgment in the product documentation would be
 * appreciated but is not required.
 * 2. Altered source versions must be plainly marked as such, and must not be
 * misrepresented as being the original software.
 * 3. This notice may not be removed or altered from any source distribution.
 *
 * The SVG parser is based on Anti-Grain Geometry 2.4 SVG example
 * Copyright (C) 2002-2004 Maxim Shemanarev (McSeem) (http://www.antigrain.com/)
 *
 * Arc calculation code based on canvg (https://code.google.com/p/canvg/)
 *
 * Bounding box calculation based on http://blog.hackers-cafe.net/2009/06/how-to-calculate-bezier-curves-bounding.html
 *
 */

#ifndef NANOSVG_H
#define NANOSVG_H

#ifdef __cplusplus
extern "C" {
#endif

// NanoSVG is a simple stupid single-header-file SVG parse. The output of the parser is a list of cubic bezier shapes.
//
// The library suits well for anything from rendering scalable icons in your editor application to prototyping a game.
//
// NanoSVG supports a wide range of SVG features, but something may be missing, feel free to create a pull request!
//
// The shapes in the SVG images are transformed by the viewBox and converted to specified units.
// That is, you should get the same looking data as your designed in your favorite app.
//
// NanoSVG can return the paths in few different units. For example if you want to render an image, you may choose
// to get the paths in pixels, or if you are feeding the data into a CNC-cutter, you may want to use millimeters.
//
// The units passed to NanoVG should be one of: 'px', 'pt', 'pc' 'mm', 'cm', or 'in'.
// DPI (dots-per-inch) controls how the unit conversion is done.
//
// If you don't know or care about the units stuff, "px" and 96 should get you going.


/* Example Usage:
	// Load
	NSVGImage* image;
	image = nsvgParseFromFile("test.svg", "px", 96);
	printf("size: %f x %f\n", image->width, image->height);
	// Use...
	for (NSVGshape *shape = image->shapes; shape != NULL; shape = shape->next) {
		for (NSVGpath *path = shape->paths; path != NULL; path = path->next) {
			for (int i = 0; i < path->npts-1; i += 3) {
				float* p = &path->pts[i*2];
				drawCubicBez(p[0],p[1], p[2],p[3], p[4],p[5], p[6],p[7]);
			}
		}
	}
	// Delete
	nsvgDelete(image);
*/

#ifndef NANOSVG_SCOPE
#define NANOSVG_SCOPE
#endif

#ifndef NANOSVG_malloc
#define NANOSVG_malloc malloc
#endif

#ifndef NANOSVG_realloc
#define NANOSVG_realloc realloc
#endif

#ifndef NANOSVG_free
#define NANOSVG_free free
#endif

// float emulation for MS VC6++ compiler
#if (_MSC_VER == 1200)
#define tanf(a) (float)tan(a)
#define cosf(a) (float)cos(a)
#define sinf(a) (float)sin(a)
#define sqrtf(a) (float)sqrt(a)
#define fabsf(a) (float)abs(a)
#define acosf(a) (float)acos(a)
#define atan2f(a,b) (float)atan2(a,b)
#define ceilf(a) (float)ceil(a)
#define fmodf(a,b) (float)fmod(a,b)
#define floorf(a) (float)floor(a)
#endif

enum NSVGpaintType {
	NSVG_PAINT_NONE = 0,
	NSVG_PAINT_COLOR = 1,
	NSVG_PAINT_LINEAR_GRADIENT = 2,
	NSVG_PAINT_RADIAL_GRADIENT = 3
};

enum NSVGspreadType {
	NSVG_SPREAD_PAD = 0,
	NSVG_SPREAD_REFLECT = 1,
	NSVG_SPREAD_REPEAT = 2
};

enum NSVGlineJoin {
	NSVG_JOIN_MITER = 0,
	NSVG_JOIN_ROUND = 1,
	NSVG_JOIN_BEVEL = 2
};

enum NSVGlineCap {
	NSVG_CAP_BUTT = 0,
	NSVG_CAP_ROUND = 1,
	NSVG_CAP_SQUARE = 2
};

enum NSVGfillRule {
	NSVG_FILLRULE_NONZERO = 0,
	NSVG_FILLRULE_EVENODD = 1
};

enum NSVGflags {
	NSVG_FLAGS_VISIBLE = 0x01
};

typedef struct NSVGgradientStop {
	unsigned int color;
	float offset;
} NSVGgradientStop;

typedef struct NSVGgradient {
	float xform[6];
	char spread;
	float fx, fy;
	int nstops;
	NSVGgradientStop stops[1];
} NSVGgradient;

typedef struct NSVGpaint {
	char type;
	union {
		unsigned int color;
		NSVGgradient* gradient;
	};
} NSVGpaint;

typedef struct NSVGpath
{
	float* pts;					// Cubic bezier points: x0,y0, [cpx1,cpx1,cpx2,cpy2,x1,y1], ...
	int npts;					// Total number of bezier points.
	char closed;				// Flag indicating if shapes should be treated as closed.
	float bounds[4];			// Tight bounding box of the shape [minx,miny,maxx,maxy].
	struct NSVGpath* next;		// Pointer to next path, or NULL if last element.
} NSVGpath;

typedef struct NSVGshape
{
	char id[64];				// Optional 'id' attr of the shape or its group
	NSVGpaint fill;				// Fill paint
	NSVGpaint stroke;			// Stroke paint
	float opacity;				// Opacity of the shape.
	float strokeWidth;			// Stroke width (scaled).
	float strokeDashOffset;		// Stroke dash offset (scaled).
	float strokeDashArray[8];			// Stroke dash array (scaled).
	char strokeDashCount;				// Number of dash values in dash array.
	char strokeLineJoin;		// Stroke join type.
	char strokeLineCap;			// Stroke cap type.
	float miterLimit;			// Miter limit
	char fillRule;				// Fill rule, see NSVGfillRule.
	unsigned char flags;		// Logical or of NSVG_FLAGS_* flags
	float bounds[4];			// Tight bounding box of the shape [minx,miny,maxx,maxy].
	NSVGpath* paths;			// Linked list of paths in the image.
	struct NSVGshape* next;		// Pointer to next shape, or NULL if last element.
} NSVGshape;

typedef struct NSVGimage
{
	float width;				// Width of the image.
	float height;				// Height of the image.
	NSVGshape* shapes;			// Linked list of shapes in the image.
} NSVGimage;

// Parses SVG file from a file, returns SVG image as paths.
NANOSVG_SCOPE NSVGimage* nsvgParseFromFile(const char* filename, const char* units, float dpi);

// Parses SVG file from a null terminated string, returns SVG image as paths.
// Important note: changes the string.
NANOSVG_SCOPE NSVGimage* nsvgParse(char* input, const char* units, float dpi);

// Deletes list of paths.
NANOSVG_SCOPE void nsvgDelete(NSVGimage* image);

#ifdef __cplusplus
}
#endif

#endif // NANOSVG_H

#ifdef NANOSVG_IMPLEMENTATION

#include <string.h>
#include <stdlib.h>
#include <math.h>

#define NSVG_PI (3.14159265358979323846264338327f)
#define NSVG_KAPPA90 (0.5522847493f)	// Length proportional to radius of a cubic bezier handle for 90deg arcs.

#define NSVG_ALIGN_MIN 0
#define NSVG_ALIGN_MID 1
#define NSVG_ALIGN_MAX 2
#define NSVG_ALIGN_NONE 0
#define NSVG_ALIGN_MEET 1
#define NSVG_ALIGN_SLICE 2

#define NSVG_NOTUSED(v) do { (void)(1 ? (void)0 : ( (void)(v) ) ); } while(0)
#define NSVG_RGB(r, g, b) (((unsigned int)r) | ((unsigned int)g << 8) | ((unsigned int)b << 16))

#ifdef _MSC_VER
	#pragma warning (disable: 4996) // Switch off security warnings
	#pragma warning (disable: 4100) // Switch off unreferenced formal parameter warnings
	#ifdef __cplusplus
	#define NSVG_INLINE inline
	#else
	#define NSVG_INLINE
	#endif
	#if !defined(strtoll)           // old MSVC versions do not have strtoll()
		#define strtoll _strtoi64
	#endif
#else
	#define NSVG_INLINE inline
#endif


static int nsvg__isspace(char c)
{
	return strchr(" \t\n\v\f\r", c) != 0;
}

static int nsvg__isdigit(char c)
{
	return c >= '0' && c <= '9';
}

static int nsvg__isnum(char c)
{
	return strchr("0123456789+-.eE", c) != 0;
}

static NSVG_INLINE float nsvg__minf(float a, float b) { return a < b ? a : b; }
static NSVG_INLINE float nsvg__maxf(float a, float b) { return a > b ? a : b; }


// Simple XML parser

#define NSVG_XML_TAG 1
#define NSVG_XML_CONTENT 2
#define NSVG_XML_MAX_ATTRIBS 256

static void nsvg__parseContent(char* s,
							   void (*contentCb)(void* ud, const char* s),
							   void* ud)
{
	// Trim start white spaces
	while (*s && nsvg__isspace(*s)) s++;
	if (!*s) return;

	if (contentCb)
		(*contentCb)(ud, s);
}

static void nsvg__parseElement(char* s,
							   void (*startelCb)(void* ud, const char* el, const char** attr),
							   void (*endelCb)(void* ud, const char* el),
							   void* ud)
{
	const char* attr[NSVG_XML_MAX_ATTRIBS];
	int nattr = 0;
	char* name;
	int start = 0;
	int end = 0;
	char quote;

	// Skip white space after the '<'
	while (*s && nsvg__isspace(*s)) s++;

	// Check if the tag is end tag
	if (*s == '/') {
		s++;
		end = 1;
	} else {
		start = 1;
	}

	// Skip comments, data and preprocessor stuff.
	if (!*s || *s == '?' || *s == '!')
		return;

	// Get tag name
	name = s;
	while (*s && !nsvg__isspace(*s)) s++;
	if (*s) { *s++ = '\0'; }

	// Get attribs
	while (!end && *s && nattr < NSVG_XML_MAX_ATTRIBS-3) {
		char* name = NULL;
		char* value = NULL;

		// Skip white space before the attrib name
		while (*s && nsvg__isspace(*s)) s++;
		if (!*s) break;
		if (*s == '/') {
			end = 1;
			break;
		}
		name = s;
		// Find end of the attrib name.
		while (*s && !nsvg__isspace(*s) && *s != '=') s++;
		if (*s) { *s++ = '\0'; }
		// Skip until the beginning of the value.
		while (*s && *s != '\"' && *s != '\'') s++;
		if (!*s) break;
		quote = *s;
		s++;
		// Store value and find the end of it.
		value = s;
		while (*s && *s != quote) s++;
		if (*s) { *s++ = '\0'; }

		// Store only well formed attributes
		if (name && value) {
			attr[nattr++] = name;
			attr[nattr++] = value;
		}
	}

	// List terminator
	attr[nattr++] = 0;
	attr[nattr++] = 0;

	// Call callbacks.
	if (start && startelCb)
		(*startelCb)(ud, name, attr);
	if (end && endelCb)
		(*endelCb)(ud, name);
}

NANOSVG_SCOPE
int nsvg__parseXML(char* input,
				   void (*startelCb)(void* ud, const char* el, const char** attr),
				   void (*endelCb)(void* ud, const char* el),
				   void (*contentCb)(void* ud, const char* s),
				   void* ud)
{
	char* s = input;
	char* mark = s;
	int state = NSVG_XML_CONTENT;
	while (*s) {
		if (*s == '<' && state == NSVG_XML_CONTENT) {
			// Start of a tag
			*s++ = '\0';
			nsvg__parseContent(mark, contentCb, ud);
			mark = s;
			state = NSVG_XML_TAG;
		} else if (*s == '>' && state == NSVG_XML_TAG) {
			// Start of a content or new tag.
			*s++ = '\0';
			nsvg__parseContent(mark, contentCb, ud);
			nsvg__parseElement(mark, startelCb, endelCb, ud);
			mark = s;
			state = NSVG_XML_CONTENT;
		} else {
			s++;
		}
	}

	return 1;
}


/* Simple SVG parser. */

#define NSVG_MAX_ATTR 128

enum NSVGgradientUnits {
	NSVG_USER_SPACE = 0,
	NSVG_OBJECT_SPACE = 1
};

#define NSVG_MAX_DASHES 8

enum NSVGunits {
	NSVG_UNITS_USER,
	NSVG_UNITS_PX,
	NSVG_UNITS_PT,
	NSVG_UNITS_PC,
	NSVG_UNITS_MM,
	NSVG_UNITS_CM,
	NSVG_UNITS_IN,
	NSVG_UNITS_PERCENT,
	NSVG_UNITS_EM,
	NSVG_UNITS_EX
};

enum NSVGvisible {
	NSVG_VIS_DISPLAY = 1,
	NSVG_VIS_VISIBLE = 2
};

typedef struct NSVGcoordinate {
	float value;
	int units;
} NSVGcoordinate;

typedef struct NSVGlinearData {
	NSVGcoordinate x1, y1, x2, y2;
} NSVGlinearData;

typedef struct NSVGradialData {
	NSVGcoordinate cx, cy, r, fx, fy;
} NSVGradialData;

typedef struct NSVGgradientData
{
	char id[64];
	char ref[64];
	char type;
	union {
		NSVGlinearData linear;
		NSVGradialData radial;
	};
	char spread;
	char units;
	float xform[6];
	int nstops;
	NSVGgradientStop* stops;
	struct NSVGgradientData* next;
} NSVGgradientData;

typedef struct NSVGattrib
{
	char id[64];
	float xform[6];
	unsigned int fillColor;
	unsigned int strokeColor;
	float opacity;
	float fillOpacity;
	float strokeOpacity;
	char fillGradient[64];
	char strokeGradient[64];
	float strokeWidth;
	float strokeDashOffset;
	float strokeDashArray[NSVG_MAX_DASHES];
	int strokeDashCount;
	char strokeLineJoin;
	char strokeLineCap;
	float miterLimit;
	char fillRule;
	float fontSize;
	unsigned int stopColor;
	float stopOpacity;
	float stopOffset;
	char hasFill;
	char hasStroke;
	char visible;
} NSVGattrib;

typedef struct NSVGstyles
{
	char*	name;
	char* description;
	struct NSVGstyles* next;
} NSVGstyles;

typedef struct NSVGparser
{
	NSVGattrib attr[NSVG_MAX_ATTR];
	int attrHead;
	float* pts;
	int npts;
	int cpts;
	NSVGpath* plist;
	NSVGimage* image;
	NSVGstyles* styles;
	NSVGgradientData* gradients;
	NSVGshape* shapesTail;
	float viewMinx, viewMiny, viewWidth, viewHeight;
	int alignX, alignY, alignType;
	float dpi;
	char pathFlag;
	char defsFlag;
	char styleFlag;
} NSVGparser;

static void nsvg__xformIdentity(float* t)
{
	t[0] = 1.0f; t[1] = 0.0f;
	t[2] = 0.0f; t[3] = 1.0f;
	t[4] = 0.0f; t[5] = 0.0f;
}

static void nsvg__xformSetTranslation(float* t, float tx, float ty)
{
	t[0] = 1.0f; t[1] = 0.0f;
	t[2] = 0.0f; t[3] = 1.0f;
	t[4] = tx; t[5] = ty;
}

static void nsvg__xformSetScale(float* t, float sx, float sy)
{
	t[0] = sx; t[1] = 0.0f;
	t[2] = 0.0f; t[3] = sy;
	t[4] = 0.0f; t[5] = 0.0f;
}

static void nsvg__xformSetSkewX(float* t, float a)
{
	t[0] = 1.0f; t[1] = 0.0f;
	t[2] = tanf(a); t[3] = 1.0f;
	t[4] = 0.0f; t[5] = 0.0f;
}

static void nsvg__xformSetSkewY(float* t, float a)
{
	t[0] = 1.0f; t[1] = tanf(a);
	t[2] = 0.0f; t[3] = 1.0f;
	t[4] = 0.0f; t[5] = 0.0f;
}

static void nsvg__xformSetRotation(float* t, float a)
{
	float cs = cosf(a), sn = sinf(a);
	t[0] = cs; t[1] = sn;
	t[2] = -sn; t[3] = cs;
	t[4] = 0.0f; t[5] = 0.0f;
}

static void nsvg__xformMultiply(float* t, float* s)
{
	float t0 = t[0] * s[0] + t[1] * s[2];
	float t2 = t[2] * s[0] + t[3] * s[2];
	float t4 = t[4] * s[0] + t[5] * s[2] + s[4];
	t[1] = t[0] * s[1] + t[1] * s[3];
	t[3] = t[2] * s[1] + t[3] * s[3];
	t[5] = t[4] * s[1] + t[5] * s[3] + s[5];
	t[0] = t0;
	t[2] = t2;
	t[4] = t4;
}

static void nsvg__xformInverse(float* inv, float* t)
{
	double invdet, det = (double)t[0] * t[3] - (double)t[2] * t[1];
	if (det > -1e-6 && det < 1e-6) {
		nsvg__xformIdentity(t);
		return;
	}
	invdet = 1.0 / det;
	inv[0] = (float)(t[3] * invdet);
	inv[2] = (float)(-t[2] * invdet);
	inv[4] = (float)(((double)t[2] * t[5] - (double)t[3] * t[4]) * invdet);
	inv[1] = (float)(-t[1] * invdet);
	inv[3] = (float)(t[0] * invdet);
	inv[5] = (float)(((double)t[1] * t[4] - (double)t[0] * t[5]) * invdet);
}

static void nsvg__xformPremultiply(float* t, float* s)
{
	float s2[6];
	memcpy(s2, s, sizeof(float)*6);
	nsvg__xformMultiply(s2, t);
	memcpy(t, s2, sizeof(float)*6);
}

static void nsvg__xformPoint(float* dx, float* dy, float x, float y, float* t)
{
	*dx = x*t[0] + y*t[2] + t[4];
	*dy = x*t[1] + y*t[3] + t[5];
}

static void nsvg__xformVec(float* dx, float* dy, float x, float y, float* t)
{
	*dx = x*t[0] + y*t[2];
	*dy = x*t[1] + y*t[3];
}

#define NSVG_EPSILON (1e-12)

static int nsvg__ptInBounds(float* pt, float* bounds)
{
	return pt[0] >= bounds[0] && pt[0] <= bounds[2] && pt[1] >= bounds[1] && pt[1] <= bounds[3];
}


static double nsvg__evalBezier(double t, double p0, double p1, double p2, double p3)
{
	double it = 1.0-t;
	return it*it*it*p0 + 3.0*it*it*t*p1 + 3.0*it*t*t*p2 + t*t*t*p3;
}

static void nsvg__curveBounds(float* bounds, float* curve)
{
	int i, j, count;
	double roots[2], a, b, c, b2ac, t, v;
	float* v0 = &curve[0];
	float* v1 = &curve[2];
	float* v2 = &curve[4];
	float* v3 = &curve[6];

	// Start the bounding box by end points
	bounds[0] = nsvg__minf(v0[0], v3[0]);
	bounds[1] = nsvg__minf(v0[1], v3[1]);
	bounds[2] = nsvg__maxf(v0[0], v3[0]);
	bounds[3] = nsvg__maxf(v0[1], v3[1]);

	// Bezier curve fits inside the convex hull of it's control points.
	// If control points are inside the bounds, we're done.
	if (nsvg__ptInBounds(v1, bounds) && nsvg__ptInBounds(v2, bounds))
		return;

	// Add bezier curve inflection points in X and Y.
	for (i = 0; i < 2; i++) {
		a = -3.0 * v0[i] + 9.0 * v1[i] - 9.0 * v2[i] + 3.0 * v3[i];
		b = 6.0 * v0[i] - 12.0 * v1[i] + 6.0 * v2[i];
		c = 3.0 * v1[i] - 3.0 * v0[i];
		count = 0;
		if (fabs(a) < NSVG_EPSILON) {
			if (fabs(b) > NSVG_EPSILON) {
				t = -c / b;
				if (t > NSVG_EPSILON && t < 1.0-NSVG_EPSILON)
					roots[count++] = t;
			}
		} else {
			b2ac = b*b - 4.0*c*a;
			if (b2ac > NSVG_EPSILON) {
				t = (-b + sqrt(b2ac)) / (2.0 * a);
				if (t > NSVG_EPSILON && t < 1.0-NSVG_EPSILON)
					roots[count++] = t;
				t = (-b - sqrt(b2ac)) / (2.0 * a);
				if (t > NSVG_EPSILON && t < 1.0-NSVG_EPSILON)
					roots[count++] = t;
			}
		}
		for (j = 0; j < count; j++) {
			v = nsvg__evalBezier(roots[j], v0[i], v1[i], v2[i], v3[i]);
			bounds[0+i] = nsvg__minf(bounds[0+i], (float)v);
			bounds[2+i] = nsvg__maxf(bounds[2+i], (float)v);
		}
	}
}

static NSVGparser* nsvg__createParser()
{
	NSVGparser* p;
	p = (NSVGparser*)NANOSVG_malloc(sizeof(NSVGparser));
	if (p == NULL) goto error;
	memset(p, 0, sizeof(NSVGparser));

	p->image = (NSVGimage*)NANOSVG_malloc(sizeof(NSVGimage));
	if (p->image == NULL) goto error;
	memset(p->image, 0, sizeof(NSVGimage));

	// Init style
	nsvg__xformIdentity(p->attr[0].xform);
	memset(p->attr[0].id, 0, sizeof p->attr[0].id);
	p->attr[0].fillColor = NSVG_RGB(0,0,0);
	p->attr[0].strokeColor = NSVG_RGB(0,0,0);
	p->attr[0].opacity = 1;
	p->attr[0].fillOpacity = 1;
	p->attr[0].strokeOpacity = 1;
	p->attr[0].stopOpacity = 1;
	p->attr[0].strokeWidth = 1;
	p->attr[0].strokeLineJoin = NSVG_JOIN_MITER;
	p->attr[0].strokeLineCap = NSVG_CAP_BUTT;
	p->attr[0].miterLimit = 4;
	p->attr[0].fillRule = NSVG_FILLRULE_NONZERO;
	p->attr[0].hasFill = 1;
	p->attr[0].visible = NSVG_VIS_DISPLAY | NSVG_VIS_VISIBLE;

	return p;

error:
	if (p) {
		if (p->image) NANOSVG_free(p->image);
		NANOSVG_free(p);
	}
	return NULL;
}

static void nsvg__deleteStyles(NSVGstyles* style) {
	while (style) {
		NSVGstyles *next = style->next;
		if (style->name!= NULL)
			free(style->name);
		if (style->description != NULL)
			free(style->description);
		free(style);
		style = next;
	}
}

static void nsvg__deletePaths(NSVGpath* path)
{
	while (path) {
		NSVGpath *next = path->next;
		if (path->pts != NULL)
			NANOSVG_free(path->pts);
		NANOSVG_free(path);
		path = next;
	}
}

static void nsvg__deletePaint(NSVGpaint* paint)
{
	if (paint->type == NSVG_PAINT_LINEAR_GRADIENT || paint->type == NSVG_PAINT_RADIAL_GRADIENT)
		NANOSVG_free(paint->gradient);
}

static void nsvg__deleteGradientData(NSVGgradientData* grad)
{
	NSVGgradientData* next;
	while (grad != NULL) {
		next = grad->next;
		NANOSVG_free(grad->stops);
		NANOSVG_free(grad);
		grad = next;
	}
}

static void nsvg__deleteParser(NSVGparser* p)
{
	if (p != NULL) {
		nsvg__deleteStyles(p->styles);
		nsvg__deletePaths(p->plist);
		nsvg__deleteGradientData(p->gradients);
		nsvgDelete(p->image);
		NANOSVG_free(p->pts);
		NANOSVG_free(p);
	}
}

static void nsvg__resetPath(NSVGparser* p)
{
	p->npts = 0;
}

static void nsvg__addPoint(NSVGparser* p, float x, float y)
{
	if (p->npts+1 > p->cpts) {
		p->cpts = p->cpts ? p->cpts*2 : 8;
		p->pts = (float*)NANOSVG_realloc(p->pts, p->cpts*2*sizeof(float));
		if (!p->pts) return;
	}
	p->pts[p->npts*2+0] = x;
	p->pts[p->npts*2+1] = y;
	p->npts++;
}

static void nsvg__moveTo(NSVGparser* p, float x, float y)
{
	if (p->npts > 0) {
		p->pts[(p->npts-1)*2+0] = x;
		p->pts[(p->npts-1)*2+1] = y;
	} else {
		nsvg__addPoint(p, x, y);
	}
}

static void nsvg__lineTo(NSVGparser* p, float x, float y)
{
	float px,py, dx,dy;
	if (p->npts > 0) {
		px = p->pts[(p->npts-1)*2+0];
		py = p->pts[(p->npts-1)*2+1];
		dx = x - px;
		dy = y - py;
		nsvg__addPoint(p, px + dx/3.0f, py + dy/3.0f);
		nsvg__addPoint(p, x - dx/3.0f, y - dy/3.0f);
		nsvg__addPoint(p, x, y);
	}
}

static void nsvg__cubicBezTo(NSVGparser* p, float cpx1, float cpy1, float cpx2, float cpy2, float x, float y)
{
	nsvg__addPoint(p, cpx1, cpy1);
	nsvg__addPoint(p, cpx2, cpy2);
	nsvg__addPoint(p, x, y);
}

static NSVGattrib* nsvg__getAttr(NSVGparser* p)
{
	return &p->attr[p->attrHead];
}

static void nsvg__pushAttr(NSVGparser* p)
{
	if (p->attrHead < NSVG_MAX_ATTR-1) {
		p->attrHead++;
		memcpy(&p->attr[p->attrHead], &p->attr[p->attrHead-1], sizeof(NSVGattrib));
	}
}

static void nsvg__popAttr(NSVGparser* p)
{
	if (p->attrHead > 0)
		p->attrHead--;
}

static float nsvg__actualOrigX(NSVGparser* p)
{
	return p->viewMinx;
}

static float nsvg__actualOrigY(NSVGparser* p)
{
	return p->viewMiny;
}

static float nsvg__actualWidth(NSVGparser* p)
{
	return p->viewWidth;
}

static float nsvg__actualHeight(NSVGparser* p)
{
	return p->viewHeight;
}

static float nsvg__actualLength(NSVGparser* p)
{
	float w = nsvg__actualWidth(p), h = nsvg__actualHeight(p);
	return sqrtf(w*w + h*h) / sqrtf(2.0f);
}

static float nsvg__convertToPixels(NSVGparser* p, NSVGcoordinate c, float orig, float length)
{
	NSVGattrib* attr = nsvg__getAttr(p);
	switch (c.units) {
		case NSVG_UNITS_USER:		return c.value;
		case NSVG_UNITS_PX:			return c.value;
		case NSVG_UNITS_PT:			return c.value / 72.0f * p->dpi;
		case NSVG_UNITS_PC:			return c.value / 6.0f * p->dpi;
		case NSVG_UNITS_MM:			return c.value / 25.4f * p->dpi;
		case NSVG_UNITS_CM:			return c.value / 2.54f * p->dpi;
		case NSVG_UNITS_IN:			return c.value * p->dpi;
		case NSVG_UNITS_EM:			return c.value * attr->fontSize;
		case NSVG_UNITS_EX:			return c.value * attr->fontSize * 0.52f; // x-height of Helvetica.
		case NSVG_UNITS_PERCENT:	return orig + c.value / 100.0f * length;
		default:					return c.value;
	}
	return c.value;
}

static NSVGgradientData* nsvg__findGradientData(NSVGparser* p, const char* id)
{
	NSVGgradientData* grad = p->gradients;
	while (grad) {
		if (strcmp(grad->id, id) == 0)
			return grad;
		grad = grad->next;
	}
	return NULL;
}

static NSVGgradient* nsvg__createGradient(NSVGparser* p, const char* id, const float* localBounds, char* paintType)
{
	NSVGattrib* attr = nsvg__getAttr(p);
	NSVGgradientData* data = NULL;
	NSVGgradientData* ref = NULL;
	NSVGgradientStop* stops = NULL;
	NSVGgradient* grad;
	float ox, oy, sw, sh, sl;
	int nstops = 0;

	data = nsvg__findGradientData(p, id);
	if (data == NULL) return NULL;

	// TODO: use ref to fill in all unset values too.
	ref = data;
	while (ref != NULL) {
		if (stops == NULL && ref->stops != NULL) {
			stops = ref->stops;
			nstops = ref->nstops;
			break;
		}
		ref = nsvg__findGradientData(p, ref->ref);
	}
	if (stops == NULL) return NULL;

	grad = (NSVGgradient*)NANOSVG_malloc(sizeof(NSVGgradient) + sizeof(NSVGgradientStop)*(nstops-1));
	if (grad == NULL) return NULL;

	// The shape width and height.
	if (data->units == NSVG_OBJECT_SPACE) {
		ox = localBounds[0];
		oy = localBounds[1];
		sw = localBounds[2] - localBounds[0];
		sh = localBounds[3] - localBounds[1];
	} else {
		ox = nsvg__actualOrigX(p);
		oy = nsvg__actualOrigY(p);
		sw = nsvg__actualWidth(p);
		sh = nsvg__actualHeight(p);
	}
	sl = sqrtf(sw*sw + sh*sh) / sqrtf(2.0f);

	if (data->type == NSVG_PAINT_LINEAR_GRADIENT) {
		float x1, y1, x2, y2, dx, dy;
		x1 = nsvg__convertToPixels(p, data->linear.x1, ox, sw);
		y1 = nsvg__convertToPixels(p, data->linear.y1, oy, sh);
		x2 = nsvg__convertToPixels(p, data->linear.x2, ox, sw);
		y2 = nsvg__convertToPixels(p, data->linear.y2, oy, sh);
		// Calculate transform aligned to the line
		dx = x2 - x1;
		dy = y2 - y1;
		grad->xform[0] = dy; grad->xform[1] = -dx;
		grad->xform[2] = dx; grad->xform[3] = dy;
		grad->xform[4] = x1; grad->xform[5] = y1;
	} else {
		float cx, cy, fx, fy, r;
		cx = nsvg__convertToPixels(p, data->radial.cx, ox, sw);
		cy = nsvg__convertToPixels(p, data->radial.cy, oy, sh);
		fx = nsvg__convertToPixels(p, data->radial.fx, ox, sw);
		fy = nsvg__convertToPixels(p, data->radial.fy, oy, sh);
		r = nsvg__convertToPixels(p, data->radial.r, 0, sl);
		// Calculate transform aligned to the circle
		grad->xform[0] = r; grad->xform[1] = 0;
		grad->xform[2] = 0; grad->xform[3] = r;
		grad->xform[4] = cx; grad->xform[5] = cy;
		grad->fx = fx / r;
		grad->fy = fy / r;
	}

	nsvg__xformMultiply(grad->xform, data->xform);
	nsvg__xformMultiply(grad->xform, attr->xform);

	grad->spread = data->spread;
	memcpy(grad->stops, stops, nstops*sizeof(NSVGgradientStop));
	grad->nstops = nstops;

	*paintType = data->type;

	return grad;
}

static float nsvg__getAverageScale(float* t)
{
	float sx = sqrtf(t[0]*t[0] + t[2]*t[2]);
	float sy = sqrtf(t[1]*t[1] + t[3]*t[3]);
	return (sx + sy) * 0.5f;
}

static void nsvg__getLocalBounds(float* bounds, NSVGshape *shape, float* xform)
{
	NSVGpath* path;
	float curve[4*2], curveBounds[4];
	int i, first = 1;
	for (path = shape->paths; path != NULL; path = path->next) {
		nsvg__xformPoint(&curve[0], &curve[1], path->pts[0], path->pts[1], xform);
		for (i = 0; i < path->npts-1; i += 3) {
			nsvg__xformPoint(&curve[2], &curve[3], path->pts[(i+1)*2], path->pts[(i+1)*2+1], xform);
			nsvg__xformPoint(&curve[4], &curve[5], path->pts[(i+2)*2], path->pts[(i+2)*2+1], xform);
			nsvg__xformPoint(&curve[6], &curve[7], path->pts[(i+3)*2], path->pts[(i+3)*2+1], xform);
			nsvg__curveBounds(curveBounds, curve);
			if (first) {
				bounds[0] = curveBounds[0];
				bounds[1] = curveBounds[1];
				bounds[2] = curveBounds[2];
				bounds[3] = curveBounds[3];
				first = 0;
			} else {
				bounds[0] = nsvg__minf(bounds[0], curveBounds[0]);
				bounds[1] = nsvg__minf(bounds[1], curveBounds[1]);
				bounds[2] = nsvg__maxf(bounds[2], curveBounds[2]);
				bounds[3] = nsvg__maxf(bounds[3], curveBounds[3]);
			}
			curve[0] = curve[6];
			curve[1] = curve[7];
		}
	}
}

static void nsvg__addShape(NSVGparser* p)
{
	NSVGattrib* attr = nsvg__getAttr(p);
	float scale = 1.0f;
	NSVGshape* shape;
	NSVGpath* path;
	int i;

	if (p->plist == NULL)
		return;

	shape = (NSVGshape*)NANOSVG_malloc(sizeof(NSVGshape));
	if (shape == NULL) goto error;
	memset(shape, 0, sizeof(NSVGshape));

	memcpy(shape->id, attr->id, sizeof shape->id);
	scale = nsvg__getAverageScale(attr->xform);
	shape->strokeWidth = attr->strokeWidth * scale;
	shape->strokeDashOffset = attr->strokeDashOffset * scale;
	shape->strokeDashCount = (char)attr->strokeDashCount;
	for (i = 0; i < attr->strokeDashCount; i++)
		shape->strokeDashArray[i] = attr->strokeDashArray[i] * scale;
	shape->strokeLineJoin = attr->strokeLineJoin;
	shape->strokeLineCap = attr->strokeLineCap;
	shape->miterLimit = attr->miterLimit;
	shape->fillRule = attr->fillRule;
	shape->opacity = attr->opacity;

	shape->paths = p->plist;
	p->plist = NULL;

	// Calculate shape bounds
	shape->bounds[0] = shape->paths->bounds[0];
	shape->bounds[1] = shape->paths->bounds[1];
	shape->bounds[2] = shape->paths->bounds[2];
	shape->bounds[3] = shape->paths->bounds[3];
	for (path = shape->paths->next; path != NULL; path = path->next) {
		shape->bounds[0] = nsvg__minf(shape->bounds[0], path->bounds[0]);
		shape->bounds[1] = nsvg__minf(shape->bounds[1], path->bounds[1]);
		shape->bounds[2] = nsvg__maxf(shape->bounds[2], path->bounds[2]);
		shape->bounds[3] = nsvg__maxf(shape->bounds[3], path->bounds[3]);
	}

	// Set fill
	if (attr->hasFill == 0) {
		shape->fill.type = NSVG_PAINT_NONE;
	} else if (attr->hasFill == 1) {
		shape->fill.type = NSVG_PAINT_COLOR;
		shape->fill.color = attr->fillColor;
		shape->fill.color |= (unsigned int)(attr->fillOpacity*255) << 24;
	} else if (attr->hasFill == 2) {
		float inv[6], localBounds[4];
		nsvg__xformInverse(inv, attr->xform);
		nsvg__getLocalBounds(localBounds, shape, inv);
		shape->fill.gradient = nsvg__createGradient(p, attr->fillGradient, localBounds, &shape->fill.type);
		if (shape->fill.gradient == NULL) {
			shape->fill.type = NSVG_PAINT_NONE;
		}
	}

	// Set stroke
	if (attr->hasStroke == 0) {
		shape->stroke.type = NSVG_PAINT_NONE;
	} else if (attr->hasStroke == 1) {
		shape->stroke.type = NSVG_PAINT_COLOR;
		shape->stroke.color = attr->strokeColor;
		shape->stroke.color |= (unsigned int)(attr->strokeOpacity*255) << 24;
	} else if (attr->hasStroke == 2) {
		float inv[6], localBounds[4];
		nsvg__xformInverse(inv, attr->xform);
		nsvg__getLocalBounds(localBounds, shape, inv);
		shape->stroke.gradient = nsvg__createGradient(p, attr->strokeGradient, localBounds, &shape->stroke.type);
		if (shape->stroke.gradient == NULL)
			shape->stroke.type = NSVG_PAINT_NONE;
	}

	// Set flags
	shape->flags = ((attr->visible & NSVG_VIS_DISPLAY) && (attr->visible & NSVG_VIS_VISIBLE) ? NSVG_FLAGS_VISIBLE : 0x00);

	// Add to tail
	if (p->image->shapes == NULL)
		p->image->shapes = shape;
	else
		p->shapesTail->next = shape;
	p->shapesTail = shape;

	return;

error:
	if (shape) NANOSVG_free(shape);
}

static void nsvg__addPath(NSVGparser* p, char closed)
{
	NSVGattrib* attr = nsvg__getAttr(p);
	NSVGpath* path = NULL;
	float bounds[4];
	float* curve;
	int i;

	if (p->npts < 4)
		return;

	if (closed)
		nsvg__lineTo(p, p->pts[0], p->pts[1]);

	path = (NSVGpath*)NANOSVG_malloc(sizeof(NSVGpath));
	if (path == NULL) goto error;
	memset(path, 0, sizeof(NSVGpath));

	path->pts = (float*)NANOSVG_malloc(p->npts*2*sizeof(float));
	if (path->pts == NULL) goto error;
	path->closed = closed;
	path->npts = p->npts;

	// Transform path.
	for (i = 0; i < p->npts; ++i)
		nsvg__xformPoint(&path->pts[i*2], &path->pts[i*2+1], p->pts[i*2], p->pts[i*2+1], attr->xform);

	// Find bounds
	for (i = 0; i < path->npts-1; i += 3) {
		curve = &path->pts[i*2];
		nsvg__curveBounds(bounds, curve);
		if (i == 0) {
			path->bounds[0] = bounds[0];
			path->bounds[1] = bounds[1];
			path->bounds[2] = bounds[2];
			path->bounds[3] = bounds[3];
		} else {
			path->bounds[0] = nsvg__minf(path->bounds[0], bounds[0]);
			path->bounds[1] = nsvg__minf(path->bounds[1], bounds[1]);
			path->bounds[2] = nsvg__maxf(path->bounds[2], bounds[2]);
			path->bounds[3] = nsvg__maxf(path->bounds[3], bounds[3]);
		}
	}

	path->next = p->plist;
	p->plist = path;

	return;

error:
	if (path != NULL) {
		if (path->pts != NULL) NANOSVG_free(path->pts);
		NANOSVG_free(path);
	}
}

// We roll our own string to float because the std library one uses locale and messes things up.
static double nsvg__atof(const char* s)
{
	char* cur = (char*)s;
	char* end = NULL;
	double res = 0.0, sign = 1.0;
#if (_MSC_VER == 1200)
	__int64 intPart = 0, fracPart = 0;
#else
	long long intPart = 0, fracPart = 0;
#endif
	char hasIntPart = 0, hasFracPart = 0;

	// Parse optional sign
	if (*cur == '+') {
		cur++;
	} else if (*cur == '-') {
		sign = -1;
		cur++;
	}

	// Parse integer part
	if (nsvg__isdigit(*cur)) {
		// Parse digit sequence
#if (_MSC_VER == 1200)
		intPart = strtol(cur, &end, 10);
#else
		intPart = strtoll(cur, &end, 10);
#endif
		if (cur != end) {
			res = (double)intPart;
			hasIntPart = 1;
			cur = end;
		}
	}

	// Parse fractional part.
	if (*cur == '.') {
		cur++; // Skip '.'
		if (nsvg__isdigit(*cur)) {
			// Parse digit sequence
#if (_MSC_VER == 1200)
			fracPart = strtol(cur, &end, 10);
#else
			fracPart = strtoll(cur, &end, 10);
#endif
			if (cur != end) {
				res += (double)fracPart / pow(10.0, (double)(end - cur));
				hasFracPart = 1;
				cur = end;
			}
		}
	}

	// A valid number should have integer or fractional part.
	if (!hasIntPart && !hasFracPart)
		return 0.0;

	// Parse optional exponent
	if (*cur == 'e' || *cur == 'E') {
		int expPart = 0;
		cur++; // skip 'E'
		expPart = strtol(cur, &end, 10); // Parse digit sequence with sign
		if (cur != end) {
			res *= pow(10.0, (double)expPart);
		}
	}

	return res * sign;
}


static const char* nsvg__parseNumber(const char* s, char* it, const int size)
{
	const int last = size-1;
	int i = 0;

	// sign
	if (*s == '-' || *s == '+') {
		if (i < last) it[i++] = *s;
		s++;
	}
	// integer part
	while (*s && nsvg__isdigit(*s)) {
		if (i < last) it[i++] = *s;
		s++;
	}
	if (*s == '.') {
		// decimal point
		if (i < last) it[i++] = *s;
		s++;
		// fraction part
		while (*s && nsvg__isdigit(*s)) {
			if (i < last) it[i++] = *s;
			s++;
		}
	}
	// exponent
	if (*s == 'e' || *s == 'E') {
		if (i < last) it[i++] = *s;
		s++;
		if (*s == '-' || *s == '+') {
			if (i < last) it[i++] = *s;
			s++;
		}
		while (*s && nsvg__isdigit(*s)) {
			if (i < last) it[i++] = *s;
			s++;
		}
	}
	it[i] = '\0';

	return s;
}

static const char* nsvg__getNextPathItem(const char* s, char* it)
{
	it[0] = '\0';
	// Skip white spaces and commas
	while (*s && (nsvg__isspace(*s) || *s == ',')) s++;
	if (!*s) return s;
	if (*s == '-' || *s == '+' || *s == '.' || nsvg__isdigit(*s)) {
		s = nsvg__parseNumber(s, it, 64);
	} else {
		// Parse command
		it[0] = *s++;
		it[1] = '\0';
		return s;
	}

	return s;
}

static unsigned int nsvg__parseColorHex(const char* str)
{
	unsigned int c = 0, r = 0, g = 0, b = 0;
	int n = 0;
	str++; // skip #
	// Calculate number of characters.
	while(str[n] && !nsvg__isspace(str[n]))
		n++;
	if (n == 6) {
		sscanf(str, "%x", &c);
	} else if (n == 3) {
		sscanf(str, "%x", &c);
		c = (c&0xf) | ((c&0xf0) << 4) | ((c&0xf00) << 8);
		c |= c<<4;
	}
	r = (c >> 16) & 0xff;
	g = (c >> 8) & 0xff;
	b = c & 0xff;
	return NSVG_RGB(r,g,b);
}

static unsigned int nsvg__parseColorRGB(const char* str)
{
	int r = -1, g = -1, b = -1;
	char s1[32]="", s2[32]="";
	sscanf(str + 4, "%d%[%%, \t]%d%[%%, \t]%d", &r, s1, &g, s2, &b);
	if (strchr(s1, '%')) {
		return NSVG_RGB((r*255)/100,(g*255)/100,(b*255)/100);
	} else {
		return NSVG_RGB(r,g,b);
	}
}

typedef struct NSVGNamedColor {
	const char* name;
	unsigned int color;
} NSVGNamedColor;

NSVGNamedColor nsvg__colors[] = {

	{ "red", NSVG_RGB(255, 0, 0) },
	{ "green", NSVG_RGB( 0, 128, 0) },
	{ "blue", NSVG_RGB( 0, 0, 255) },
	{ "yellow", NSVG_RGB(255, 255, 0) },
	{ "cyan", NSVG_RGB( 0, 255, 255) },
	{ "magenta", NSVG_RGB(255, 0, 255) },
	{ "black", NSVG_RGB( 0, 0, 0) },
	{ "grey", NSVG_RGB(128, 128, 128) },
	{ "gray", NSVG_RGB(128, 128, 128) },
	{ "white", NSVG_RGB(255, 255, 255) },

#ifdef NANOSVG_ALL_COLOR_KEYWORDS
	{ "aliceblue", NSVG_RGB(240, 248, 255) },
	{ "antiquewhite", NSVG_RGB(250, 235, 215) },
	{ "aqua", NSVG_RGB( 0, 255, 255) },
	{ "aquamarine", NSVG_RGB(127, 255, 212) },
	{ "azure", NSVG_RGB(240, 255, 255) },
	{ "beige", NSVG_RGB(245, 245, 220) },
	{ "bisque", NSVG_RGB(255, 228, 196) },
	{ "blanchedalmond", NSVG_RGB(255, 235, 205) },
	{ "blueviolet", NSVG_RGB(138, 43, 226) },
	{ "brown", NSVG_RGB(165, 42, 42) },
	{ "burlywood", NSVG_RGB(222, 184, 135) },
	{ "cadetblue", NSVG_RGB( 95, 158, 160) },
	{ "chartreuse", NSVG_RGB(127, 255, 0) },
	{ "chocolate", NSVG_RGB(210, 105, 30) },
	{ "coral", NSVG_RGB(255, 127, 80) },
	{ "cornflowerblue", NSVG_RGB(100, 149, 237) },
	{ "cornsilk", NSVG_RGB(255, 248, 220) },
	{ "crimson", NSVG_RGB(220, 20, 60) },
	{ "darkblue", NSVG_RGB( 0, 0, 139) },
	{ "darkcyan", NSVG_RGB( 0, 139, 139) },
	{ "darkgoldenrod", NSVG_RGB(184, 134, 11) },
	{ "darkgray", NSVG_RGB(169, 169, 169) },
	{ "darkgreen", NSVG_RGB( 0, 100, 0) },
	{ "darkgrey", NSVG_RGB(169, 169, 169) },
	{ "darkkhaki", NSVG_RGB(189, 183, 107) },
	{ "darkmagenta", NSVG_RGB(139, 0, 139) },
	{ "darkolivegreen", NSVG_RGB( 85, 107, 47) },
	{ "darkorange", NSVG_RGB(255, 140, 0) },
	{ "darkorchid", NSVG_RGB(153, 50, 204) },
	{ "darkred", NSVG_RGB(139, 0, 0) },
	{ "darksalmon", NSVG_RGB(233, 150, 122) },
	{ "darkseagreen", NSVG_RGB(143, 188, 143) },
	{ "darkslateblue", NSVG_RGB( 72, 61, 139) },
	{ "darkslategray", NSVG_RGB( 47, 79, 79) },
	{ "darkslategrey", NSVG_RGB( 47, 79, 79) },
	{ "darkturquoise", NSVG_RGB( 0, 206, 209) },
	{ "darkviolet", NSVG_RGB(148, 0, 211) },
	{ "deeppink", NSVG_RGB(255, 20, 147) },
	{ "deepskyblue", NSVG_RGB( 0, 191, 255) },
	{ "dimgray", NSVG_RGB(105, 105, 105) },
	{ "dimgrey", NSVG_RGB(105, 105, 105) },
	{ "dodgerblue", NSVG_RGB( 30, 144, 255) },
	{ "firebrick", NSVG_RGB(178, 34, 34) },
	{ "floralwhite", NSVG_RGB(255, 250, 240) },
	{ "forestgreen", NSVG_RGB( 34, 139, 34) },
	{ "fuchsia", NSVG_RGB(255, 0, 255) },
	{ "gainsboro", NSVG_RGB(220, 220, 220) },
	{ "ghostwhite", NSVG_RGB(248, 248, 255) },
	{ "gold", NSVG_RGB(255, 215, 0) },
	{ "goldenrod", NSVG_RGB(218, 165, 32) },
	{ "greenyellow", NSVG_RGB(173, 255, 47) },
	{ "honeydew", NSVG_RGB(240, 255, 240) },
	{ "hotpink", NSVG_RGB(255, 105, 180) },
	{ "indianred", NSVG_RGB(205, 92, 92) },
	{ "indigo", NSVG_RGB( 75, 0, 130) },
	{ "ivory", NSVG_RGB(255, 255, 240) },
	{ "khaki", NSVG_RGB(240, 230, 140) },
	{ "lavender", NSVG_RGB(230, 230, 250) },
	{ "lavenderblush", NSVG_RGB(255, 240, 245) },
	{ "lawngreen", NSVG_RGB(124, 252, 0) },
	{ "lemonchiffon", NSVG_RGB(255, 250, 205) },
	{ "lightblue", NSVG_RGB(173, 216, 230) },
	{ "lightcoral", NSVG_RGB(240, 128, 128) },
	{ "lightcyan", NSVG_RGB(224, 255, 255) },
	{ "lightgoldenrodyellow", NSVG_RGB(250, 250, 210) },
	{ "lightgray", NSVG_RGB(211, 211, 211) },
	{ "lightgreen", NSVG_RGB(144, 238, 144) },
	{ "lightgrey", NSVG_RGB(211, 211, 211) },
	{ "lightpink", NSVG_RGB(255, 182, 193) },
	{ "lightsalmon", NSVG_RGB(255, 160, 122) },
	{ "lightseagreen", NSVG_RGB( 32, 178, 170) },
	{ "lightskyblue", NSVG_RGB(135, 206, 250) },
	{ "lightslategray", NSVG_RGB(119, 136, 153) },
	{ "lightslategrey", NSVG_RGB(119, 136, 153) },
	{ "lightsteelblue", NSVG_RGB(176, 196, 222) },
	{ "lightyellow", NSVG_RGB(255, 255, 224) },
	{ "lime", NSVG_RGB( 0, 255, 0) },
	{ "limegreen", NSVG_RGB( 50, 205, 50) },
	{ "linen", NSVG_RGB(250, 240, 230) },
	{ "maroon", NSVG_RGB(128, 0, 0) },
	{ "mediumaquamarine", NSVG_RGB(102, 205, 170) },
	{ "mediumblue", NSVG_RGB( 0, 0, 205) },
	{ "mediumorchid", NSVG_RGB(186, 85, 211) },
	{ "mediumpurple", NSVG_RGB(147, 112, 219) },
	{ "mediumseagreen", NSVG_RGB( 60, 179, 113) },
	{ "mediumslateblue", NSVG_RGB(123, 104, 238) },
	{ "mediumspringgreen", NSVG_RGB( 0, 250, 154) },
	{ "mediumturquoise", NSVG_RGB( 72, 209, 204) },
	{ "mediumvioletred", NSVG_RGB(199, 21, 133) },
	{ "midnightblue", NSVG_RGB( 25, 25, 112) },
	{ "mintcream", NSVG_RGB(245, 255, 250) },
	{ "mistyrose", NSVG_RGB(255, 228, 225) },
	{ "moccasin", NSVG_RGB(255, 228, 181) },
	{ "navajowhite", NSVG_RGB(255, 222, 173) },
	{ "navy", NSVG_RGB( 0, 0, 128) },
	{ "oldlace", NSVG_RGB(253, 245, 230) },
	{ "olive", NSVG_RGB(128, 128, 0) },
	{ "olivedrab", NSVG_RGB(107, 142, 35) },
	{ "orange", NSVG_RGB(255, 165, 0) },
	{ "orangered", NSVG_RGB(255, 69, 0) },
	{ "orchid", NSVG_RGB(218, 112, 214) },
	{ "palegoldenrod", NSVG_RGB(238, 232, 170) },
	{ "palegreen", NSVG_RGB(152, 251, 152) },
	{ "paleturquoise", NSVG_RGB(175, 238, 238) },
	{ "palevioletred", NSVG_RGB(219, 112, 147) },
	{ "papayawhip", NSVG_RGB(255, 239, 213) },
	{ "peachpuff", NSVG_RGB(255, 218, 185) },
	{ "peru", NSVG_RGB(205, 133, 63) },
	{ "pink", NSVG_RGB(255, 192, 203) },
	{ "plum", NSVG_RGB(221, 160, 221) },
	{ "powderblue", NSVG_RGB(176, 224, 230) },
	{ "purple", NSVG_RGB(128, 0, 128) },
	{ "rosybrown", NSVG_RGB(188, 143, 143) },
	{ "royalblue", NSVG_RGB( 65, 105, 225) },
	{ "saddlebrown", NSVG_RGB(139, 69, 19) },
	{ "salmon", NSVG_RGB(250, 128, 114) },
	{ "sandybrown", NSVG_RGB(244, 164, 96) },
	{ "seagreen", NSVG_RGB( 46, 139, 87) },
	{ "seashell", NSVG_RGB(255, 245, 238) },
	{ "sienna", NSVG_RGB(160, 82, 45) },
	{ "silver", NSVG_RGB(192, 192, 192) },
	{ "skyblue", NSVG_RGB(135, 206, 235) },
	{ "slateblue", NSVG_RGB(106, 90, 205) },
	{ "slategray", NSVG_RGB(112, 128, 144) },
	{ "slategrey", NSVG_RGB(112, 128, 144) },
	{ "snow", NSVG_RGB(255, 250, 250) },
	{ "springgreen", NSVG_RGB( 0, 255, 127) },
	{ "steelblue", NSVG_RGB( 70, 130, 180) },
	{ "tan", NSVG_RGB(210, 180, 140) },
	{ "teal", NSVG_RGB( 0, 128, 128) },
	{ "thistle", NSVG_RGB(216, 191, 216) },
	{ "tomato", NSVG_RGB(255, 99, 71) },
	{ "turquoise", NSVG_RGB( 64, 224, 208) },
	{ "violet", NSVG_RGB(238, 130, 238) },
	{ "wheat", NSVG_RGB(245, 222, 179) },
	{ "whitesmoke", NSVG_RGB(245, 245, 245) },
	{ "yellowgreen", NSVG_RGB(154, 205, 50) },
#endif
};

static unsigned int nsvg__parseColorName(const char* str)
{
	int i, ncolors = sizeof(nsvg__colors) / sizeof(NSVGNamedColor);

	for (i = 0; i < ncolors; i++) {
		if (strcmp(nsvg__colors[i].name, str) == 0) {
			return nsvg__colors[i].color;
		}
	}

	return NSVG_RGB(128, 128, 128);
}

static unsigned int nsvg__parseColor(const char* str)
{
	size_t len = 0;
	while(*str == ' ') ++str;
	len = strlen(str);
	if (len >= 1 && *str == '#')
		return nsvg__parseColorHex(str);
	else if (len >= 4 && str[0] == 'r' && str[1] == 'g' && str[2] == 'b' && str[3] == '(')
		return nsvg__parseColorRGB(str);
	return nsvg__parseColorName(str);
}

static float nsvg__parseOpacity(const char* str)
{
	float val = 0;
	sscanf(str, "%f", &val);
	if (val < 0.0f) val = 0.0f;
	if (val > 1.0f) val = 1.0f;
	return val;
}

static float nsvg__parseMiterLimit(const char* str)
{
	float val = 0;
	sscanf(str, "%f", &val);
	if (val < 0.0f) val = 0.0f;
	return val;
}

static int nsvg__parseUnits(const char* units)
{
	if (units[0] == 'p' && units[1] == 'x')
		return NSVG_UNITS_PX;
	else if (units[0] == 'p' && units[1] == 't')
		return NSVG_UNITS_PT;
	else if (units[0] == 'p' && units[1] == 'c')
		return NSVG_UNITS_PC;
	else if (units[0] == 'm' && units[1] == 'm')
		return NSVG_UNITS_MM;
	else if (units[0] == 'c' && units[1] == 'm')
		return NSVG_UNITS_CM;
	else if (units[0] == 'i' && units[1] == 'n')
		return NSVG_UNITS_IN;
	else if (units[0] == '%')
		return NSVG_UNITS_PERCENT;
	else if (units[0] == 'e' && units[1] == 'm')
		return NSVG_UNITS_EM;
	else if (units[0] == 'e' && units[1] == 'x')
		return NSVG_UNITS_EX;
	return NSVG_UNITS_USER;
}

static NSVGcoordinate nsvg__parseCoordinateRaw(const char* str)
{
	NSVGcoordinate coord = {0, NSVG_UNITS_USER};
	char units[32]="";
	sscanf(str, "%f%s", &coord.value, units);
	coord.units = nsvg__parseUnits(units);
	return coord;
}

static NSVGcoordinate nsvg__coord(float v, int units)
{
	NSVGcoordinate coord = {v, units};
	return coord;
}

static float nsvg__parseCoordinate(NSVGparser* p, const char* str, float orig, float length)
{
	NSVGcoordinate coord = nsvg__parseCoordinateRaw(str);
	return nsvg__convertToPixels(p, coord, orig, length);
}

static int nsvg__parseTransformArgs(const char* str, float* args, int maxNa, int* na)
{
	const char* end;
	const char* ptr;
	char it[64];

	*na = 0;
	ptr = str;
	while (*ptr && *ptr != '(') ++ptr;
	if (*ptr == 0)
		return 1;
	end = ptr;
	while (*end && *end != ')') ++end;
	if (*end == 0)
		return 1;

	while (ptr < end) {
		if (*ptr == '-' || *ptr == '+' || *ptr == '.' || nsvg__isdigit(*ptr)) {
			if (*na >= maxNa) return 0;
			ptr = nsvg__parseNumber(ptr, it, 64);
			args[(*na)++] = (float)nsvg__atof(it);
		} else {
			++ptr;
		}
	}
	return (int)(end - str);
}


static int nsvg__parseMatrix(float* xform, const char* str)
{
	float t[6];
	int na = 0;
	int len = nsvg__parseTransformArgs(str, t, 6, &na);
	if (na != 6) return len;
	memcpy(xform, t, sizeof(float)*6);
	return len;
}

static int nsvg__parseTranslate(float* xform, const char* str)
{
	float args[2];
	float t[6];
	int na = 0;
	int len = nsvg__parseTransformArgs(str, args, 2, &na);
	if (na == 1) args[1] = 0.0;

	nsvg__xformSetTranslation(t, args[0], args[1]);
	memcpy(xform, t, sizeof(float)*6);
	return len;
}

static int nsvg__parseScale(float* xform, const char* str)
{
	float args[2];
	int na = 0;
	float t[6];
	int len = nsvg__parseTransformArgs(str, args, 2, &na);
	if (na == 1) args[1] = args[0];
	nsvg__xformSetScale(t, args[0], args[1]);
	memcpy(xform, t, sizeof(float)*6);
	return len;
}

static int nsvg__parseSkewX(float* xform, const char* str)
{
	float args[1];
	int na = 0;
	float t[6];
	int len = nsvg__parseTransformArgs(str, args, 1, &na);
	nsvg__xformSetSkewX(t, args[0]/180.0f*NSVG_PI);
	memcpy(xform, t, sizeof(float)*6);
	return len;
}

static int nsvg__parseSkewY(float* xform, const char* str)
{
	float args[1];
	int na = 0;
	float t[6];
	int len = nsvg__parseTransformArgs(str, args, 1, &na);
	nsvg__xformSetSkewY(t, args[0]/180.0f*NSVG_PI);
	memcpy(xform, t, sizeof(float)*6);
	return len;
}

static int nsvg__parseRotate(float* xform, const char* str)
{
	float args[3];
	int na = 0;
	float m[6];
	float t[6];
	int len = nsvg__parseTransformArgs(str, args, 3, &na);
	if (na == 1)
		args[1] = args[2] = 0.0f;
	nsvg__xformIdentity(m);

	if (na > 1) {
		nsvg__xformSetTranslation(t, -args[1], -args[2]);
		nsvg__xformMultiply(m, t);
	}

	nsvg__xformSetRotation(t, args[0]/180.0f*NSVG_PI);
	nsvg__xformMultiply(m, t);

	if (na > 1) {
		nsvg__xformSetTranslation(t, args[1], args[2]);
		nsvg__xformMultiply(m, t);
	}

	memcpy(xform, m, sizeof(float)*6);

	return len;
}

static void nsvg__parseTransform(float* xform, const char* str)
{
	float t[6];
	nsvg__xformIdentity(xform);
	while (*str)
	{
		if (strncmp(str, "matrix", 6) == 0)
			str += nsvg__parseMatrix(t, str);
		else if (strncmp(str, "translate", 9) == 0)
			str += nsvg__parseTranslate(t, str);
		else if (strncmp(str, "scale", 5) == 0)
			str += nsvg__parseScale(t, str);
		else if (strncmp(str, "rotate", 6) == 0)
			str += nsvg__parseRotate(t, str);
		else if (strncmp(str, "skewX", 5) == 0)
			str += nsvg__parseSkewX(t, str);
		else if (strncmp(str, "skewY", 5) == 0)
			str += nsvg__parseSkewY(t, str);
		else{
			++str;
			continue;
		}

		nsvg__xformPremultiply(xform, t);
	}
}

static void nsvg__parseUrl(char* id, const char* str)
{
	int i = 0;
	str += 4; // "url(";
	if (*str == '#')
		str++;
	while (i < 63 && *str != ')') {
		id[i] = *str++;
		i++;
	}
	id[i] = '\0';
}

static char nsvg__parseLineCap(const char* str)
{
	if (strcmp(str, "butt") == 0)
		return NSVG_CAP_BUTT;
	else if (strcmp(str, "round") == 0)
		return NSVG_CAP_ROUND;
	else if (strcmp(str, "square") == 0)
		return NSVG_CAP_SQUARE;
	// TODO: handle inherit.
	return NSVG_CAP_BUTT;
}

static char nsvg__parseLineJoin(const char* str)
{
	if (strcmp(str, "miter") == 0)
		return NSVG_JOIN_MITER;
	else if (strcmp(str, "round") == 0)
		return NSVG_JOIN_ROUND;
	else if (strcmp(str, "bevel") == 0)
		return NSVG_JOIN_BEVEL;
	// TODO: handle inherit.
	return NSVG_JOIN_MITER;
}

static char nsvg__parseFillRule(const char* str)
{
	if (strcmp(str, "nonzero") == 0)
		return NSVG_FILLRULE_NONZERO;
	else if (strcmp(str, "evenodd") == 0)
		return NSVG_FILLRULE_EVENODD;
	// TODO: handle inherit.
	return NSVG_FILLRULE_NONZERO;
}

static const char* nsvg__getNextDashItem(const char* s, char* it)
{
	int n = 0;
	it[0] = '\0';
	// Skip white spaces and commas
	while (*s && (nsvg__isspace(*s) || *s == ',')) s++;
	// Advance until whitespace, comma or end.
	while (*s && (!nsvg__isspace(*s) && *s != ',')) {
		if (n < 63)
			it[n++] = *s;
		s++;
	}
	it[n++] = '\0';
	return s;
}

static int nsvg__parseStrokeDashArray(NSVGparser* p, const char* str, float* strokeDashArray)
{
	char item[64];
	int count = 0, i;
	float sum = 0.0f;

	// Handle "none"
	if (str[0] == 'n')
		return 0;

	// Parse dashes
	while (*str) {
		str = nsvg__getNextDashItem(str, item);
		if (!*item) break;
		if (count < NSVG_MAX_DASHES)
			strokeDashArray[count++] = fabsf(nsvg__parseCoordinate(p, item, 0.0f, nsvg__actualLength(p)));
	}

	for (i = 0; i < count; i++)
		sum += strokeDashArray[i];
	if (sum <= 1e-6f)
		count = 0;

	return count;
}

static void nsvg__parseStyle(NSVGparser* p, const char* str);

static int nsvg__parseAttr(NSVGparser* p, const char* name, const char* value)
{
	float xform[6];
	NSVGattrib* attr = nsvg__getAttr(p);
	if (!attr) return 0;

	if (strcmp(name, "style") == 0) {
		nsvg__parseStyle(p, value);
	} else if (strcmp(name, "display") == 0) {
		if (strcmp(value, "none") == 0)
			attr->visible &= ~NSVG_VIS_DISPLAY;
		// Don't reset ->visible on display:inline, one display:none hides the whole subtree

	} else if (strcmp(name, "visibility") == 0) {
		if (strcmp(value, "hidden") == 0) {
			attr->visible &= ~NSVG_VIS_VISIBLE;
		} else if (strcmp(value, "visible") == 0) {
			attr->visible |= NSVG_VIS_VISIBLE;
		}
	} else if (strcmp(name, "fill") == 0) {
		if (strcmp(value, "none") == 0) {
			attr->hasFill = 0;
		} else if (strncmp(value, "url(", 4) == 0) {
			attr->hasFill = 2;
			nsvg__parseUrl(attr->fillGradient, value);
		} else {
			attr->hasFill = 1;
			attr->fillColor = nsvg__parseColor(value);
		}
	} else if (strcmp(name, "opacity") == 0) {
		attr->opacity = nsvg__parseOpacity(value);
	} else if (strcmp(name, "fill-opacity") == 0) {
		attr->fillOpacity = nsvg__parseOpacity(value);
	} else if (strcmp(name, "stroke") == 0) {
		if (strcmp(value, "none") == 0) {
			attr->hasStroke = 0;
		} else if (strncmp(value, "url(", 4) == 0) {
			attr->hasStroke = 2;
			nsvg__parseUrl(attr->strokeGradient, value);
		} else {
			attr->hasStroke = 1;
			attr->strokeColor = nsvg__parseColor(value);
		}
	} else if (strcmp(name, "stroke-width") == 0) {
		attr->strokeWidth = nsvg__parseCoordinate(p, value, 0.0f, nsvg__actualLength(p));
	} else if (strcmp(name, "stroke-dasharray") == 0) {
		attr->strokeDashCount = nsvg__parseStrokeDashArray(p, value, attr->strokeDashArray);
	} else if (strcmp(name, "stroke-dashoffset") == 0) {
		attr->strokeDashOffset = nsvg__parseCoordinate(p, value, 0.0f, nsvg__actualLength(p));
	} else if (strcmp(name, "stroke-opacity") == 0) {
		attr->strokeOpacity = nsvg__parseOpacity(value);
	} else if (strcmp(name, "stroke-linecap") == 0) {
		attr->strokeLineCap = nsvg__parseLineCap(value);
	} else if (strcmp(name, "stroke-linejoin") == 0) {
		attr->strokeLineJoin = nsvg__parseLineJoin(value);
	} else if (strcmp(name, "stroke-miterlimit") == 0) {
		attr->miterLimit = nsvg__parseMiterLimit(value);
	} else if (strcmp(name, "fill-rule") == 0) {
		attr->fillRule = nsvg__parseFillRule(value);
	} else if (strcmp(name, "font-size") == 0) {
		attr->fontSize = nsvg__parseCoordinate(p, value, 0.0f, nsvg__actualLength(p));
	} else if (strcmp(name, "transform") == 0) {
		nsvg__parseTransform(xform, value);
		nsvg__xformPremultiply(attr->xform, xform);
	} else if (strcmp(name, "stop-color") == 0) {
		attr->stopColor = nsvg__parseColor(value);
	} else if (strcmp(name, "stop-opacity") == 0) {
		attr->stopOpacity = nsvg__parseOpacity(value);
	} else if (strcmp(name, "offset") == 0) {
		attr->stopOffset = nsvg__parseCoordinate(p, value, 0.0f, 1.0f);
	} else if (strcmp(name, "id") == 0) {
		strncpy(attr->id, value, 63);
		attr->id[63] = '\0';
	} else if (strcmp(name, "class") == 0) {
		NSVGstyles* style = p->styles;
		while (style) {
			if (strcmp(style->name + 1, value) == 0) {
				break;
			}
			style = style->next;
		}
		if (style) {
			nsvg__parseStyle(p, style->description);
		}
	} else {
		return 0;
	}
	return 1;
}

static int nsvg__parseNameValue(NSVGparser* p, const char* start, const char* end)
{
	const char* str;
	const char* val;
	char name[512];
	char value[512];
	int n;

	str = start;
	while (str < end && *str != ':') ++str;

	val = str;

	// Right Trim
	while (str > start &&  (*str == ':' || nsvg__isspace(*str))) --str;
	++str;

	n = (int)(str - start);
	if (n > 511) n = 511;
	if (n) memcpy(name, start, n);
	name[n] = 0;

	while (val < end && (*val == ':' || nsvg__isspace(*val))) ++val;

	n = (int)(end - val);
	if (n > 511) n = 511;
	if (n) memcpy(value, val, n);
	value[n] = 0;

	return nsvg__parseAttr(p, name, value);
}

static void nsvg__parseStyle(NSVGparser* p, const char* str)
{
	const char* start;
	const char* end;

	while (*str) {
		// Left Trim
		while(*str && nsvg__isspace(*str)) ++str;
		start = str;
		while(*str && *str != ';') ++str;
		end = str;

		// Right Trim
		while (end > start &&  (*end == ';' || nsvg__isspace(*end))) --end;
		++end;

		nsvg__parseNameValue(p, start, end);
		if (*str) ++str;
	}
}

static void nsvg__parseAttribs(NSVGparser* p, const char** attr)
{
	int i;
	for (i = 0; attr[i]; i += 2)
	{
		if (strcmp(attr[i], "style") == 0)
			nsvg__parseStyle(p, attr[i + 1]);
		else
			nsvg__parseAttr(p, attr[i], attr[i + 1]);
	}
}

static int nsvg__getArgsPerElement(char cmd)
{
	switch (cmd) {
		case 'v':
		case 'V':
		case 'h':
		case 'H':
			return 1;
		case 'm':
		case 'M':
		case 'l':
		case 'L':
		case 't':
		case 'T':
			return 2;
		case 'q':
		case 'Q':
		case 's':
		case 'S':
			return 4;
		case 'c':
		case 'C':
			return 6;
		case 'a':
		case 'A':
			return 7;
	}
	return 0;
}

static void nsvg__pathMoveTo(NSVGparser* p, float* cpx, float* cpy, float* args, int rel)
{
	if (rel) {
		*cpx += args[0];
		*cpy += args[1];
	} else {
		*cpx = args[0];
		*cpy = args[1];
	}
	nsvg__moveTo(p, *cpx, *cpy);
}

static void nsvg__pathLineTo(NSVGparser* p, float* cpx, float* cpy, float* args, int rel)
{
	if (rel) {
		*cpx += args[0];
		*cpy += args[1];
	} else {
		*cpx = args[0];
		*cpy = args[1];
	}
	nsvg__lineTo(p, *cpx, *cpy);
}

static void nsvg__pathHLineTo(NSVGparser* p, float* cpx, float* cpy, float* args, int rel)
{
	if (rel)
		*cpx += args[0];
	else
		*cpx = args[0];
	nsvg__lineTo(p, *cpx, *cpy);
}

static void nsvg__pathVLineTo(NSVGparser* p, float* cpx, float* cpy, float* args, int rel)
{
	if (rel)
		*cpy += args[0];
	else
		*cpy = args[0];
	nsvg__lineTo(p, *cpx, *cpy);
}

static void nsvg__pathCubicBezTo(NSVGparser* p, float* cpx, float* cpy,
								 float* cpx2, float* cpy2, float* args, int rel)
{
	float x2, y2, cx1, cy1, cx2, cy2;

	if (rel) {
		cx1 = *cpx + args[0];
		cy1 = *cpy + args[1];
		cx2 = *cpx + args[2];
		cy2 = *cpy + args[3];
		x2 = *cpx + args[4];
		y2 = *cpy + args[5];
	} else {
		cx1 = args[0];
		cy1 = args[1];
		cx2 = args[2];
		cy2 = args[3];
		x2 = args[4];
		y2 = args[5];
	}

	nsvg__cubicBezTo(p, cx1,cy1, cx2,cy2, x2,y2);

	*cpx2 = cx2;
	*cpy2 = cy2;
	*cpx = x2;
	*cpy = y2;
}

static void nsvg__pathCubicBezShortTo(NSVGparser* p, float* cpx, float* cpy,
									  float* cpx2, float* cpy2, float* args, int rel)
{
	float x1, y1, x2, y2, cx1, cy1, cx2, cy2;

	x1 = *cpx;
	y1 = *cpy;
	if (rel) {
		cx2 = *cpx + args[0];
		cy2 = *cpy + args[1];
		x2 = *cpx + args[2];
		y2 = *cpy + args[3];
	} else {
		cx2 = args[0];
		cy2 = args[1];
		x2 = args[2];
		y2 = args[3];
	}

	cx1 = 2*x1 - *cpx2;
	cy1 = 2*y1 - *cpy2;

	nsvg__cubicBezTo(p, cx1,cy1, cx2,cy2, x2,y2);

	*cpx2 = cx2;
	*cpy2 = cy2;
	*cpx = x2;
	*cpy = y2;
}

static void nsvg__pathQuadBezTo(NSVGparser* p, float* cpx, float* cpy,
								float* cpx2, float* cpy2, float* args, int rel)
{
	float x1, y1, x2, y2, cx, cy;
	float cx1, cy1, cx2, cy2;

	x1 = *cpx;
	y1 = *cpy;
	if (rel) {
		cx = *cpx + args[0];
		cy = *cpy + args[1];
		x2 = *cpx + args[2];
		y2 = *cpy + args[3];
	} else {
		cx = args[0];
		cy = args[1];
		x2 = args[2];
		y2 = args[3];
	}

	// Convert to cubic bezier
	cx1 = x1 + 2.0f/3.0f*(cx - x1);
	cy1 = y1 + 2.0f/3.0f*(cy - y1);
	cx2 = x2 + 2.0f/3.0f*(cx - x2);
	cy2 = y2 + 2.0f/3.0f*(cy - y2);

	nsvg__cubicBezTo(p, cx1,cy1, cx2,cy2, x2,y2);

	*cpx2 = cx;
	*cpy2 = cy;
	*cpx = x2;
	*cpy = y2;
}

static void nsvg__pathQuadBezShortTo(NSVGparser* p, float* cpx, float* cpy,
									 float* cpx2, float* cpy2, float* args, int rel)
{
	float x1, y1, x2, y2, cx, cy;
	float cx1, cy1, cx2, cy2;

	x1 = *cpx;
	y1 = *cpy;
	if (rel) {
		x2 = *cpx + args[0];
		y2 = *cpy + args[1];
	} else {
		x2 = args[0];
		y2 = args[1];
	}

	cx = 2*x1 - *cpx2;
	cy = 2*y1 - *cpy2;

	// Convert to cubix bezier
	cx1 = x1 + 2.0f/3.0f*(cx - x1);
	cy1 = y1 + 2.0f/3.0f*(cy - y1);
	cx2 = x2 + 2.0f/3.0f*(cx - x2);
	cy2 = y2 + 2.0f/3.0f*(cy - y2);

	nsvg__cubicBezTo(p, cx1,cy1, cx2,cy2, x2,y2);

	*cpx2 = cx;
	*cpy2 = cy;
	*cpx = x2;
	*cpy = y2;
}

static float nsvg__sqr(float x) { return x*x; }
static float nsvg__vmag(float x, float y) { return sqrtf(x*x + y*y); }

static float nsvg__vecrat(float ux, float uy, float vx, float vy)
{
	return (ux*vx + uy*vy) / (nsvg__vmag(ux,uy) * nsvg__vmag(vx,vy));
}

static float nsvg__vecang(float ux, float uy, float vx, float vy)
{
	float r = nsvg__vecrat(ux,uy, vx,vy);
	if (r < -1.0f) r = -1.0f;
	if (r > 1.0f) r = 1.0f;
	return ((ux*vy < uy*vx) ? -1.0f : 1.0f) * acosf(r);
}

static void nsvg__pathArcTo(NSVGparser* p, float* cpx, float* cpy, float* args, int rel)
{
	// Ported from canvg (https://code.google.com/p/canvg/)
	float rx, ry, rotx;
	float x1, y1, x2, y2, cx, cy, dx, dy, d;
	float x1p, y1p, cxp, cyp, s, sa, sb;
	float ux, uy, vx, vy, a1, da;
	float x, y, tanx, tany, a, px = 0, py = 0, ptanx = 0, ptany = 0, t[6];
	float sinrx, cosrx;
	int fa, fs;
	int i, ndivs;
	float hda, kappa;

	rx = fabsf(args[0]);				// y radius
	ry = fabsf(args[1]);				// x radius
	rotx = args[2] / 180.0f * NSVG_PI;		// x rotation angle
	fa = fabsf(args[3]) > 1e-6 ? 1 : 0;	// Large arc
	fs = fabsf(args[4]) > 1e-6 ? 1 : 0;	// Sweep direction
	x1 = *cpx;							// start point
	y1 = *cpy;
	if (rel) {							// end point
		x2 = *cpx + args[5];
		y2 = *cpy + args[6];
	} else {
		x2 = args[5];
		y2 = args[6];
	}

	dx = x1 - x2;
	dy = y1 - y2;
	d = sqrtf(dx*dx + dy*dy);
	if (d < 1e-6f || rx < 1e-6f || ry < 1e-6f) {
		// The arc degenerates to a line
		nsvg__lineTo(p, x2, y2);
		*cpx = x2;
		*cpy = y2;
		return;
	}

	sinrx = sinf(rotx);
	cosrx = cosf(rotx);

	// Convert to center point parameterization.
	// http://www.w3.org/TR/SVG11/implnote.html#ArcImplementationNotes
	// 1) Compute x1', y1'
	x1p = cosrx * dx / 2.0f + sinrx * dy / 2.0f;
	y1p = -sinrx * dx / 2.0f + cosrx * dy / 2.0f;
	d = nsvg__sqr(x1p)/nsvg__sqr(rx) + nsvg__sqr(y1p)/nsvg__sqr(ry);
	if (d > 1) {
		d = sqrtf(d);
		rx *= d;
		ry *= d;
	}
	// 2) Compute cx', cy'
	s = 0.0f;
	sa = nsvg__sqr(rx)*nsvg__sqr(ry) - nsvg__sqr(rx)*nsvg__sqr(y1p) - nsvg__sqr(ry)*nsvg__sqr(x1p);
	sb = nsvg__sqr(rx)*nsvg__sqr(y1p) + nsvg__sqr(ry)*nsvg__sqr(x1p);
	if (sa < 0.0f) sa = 0.0f;
	if (sb > 0.0f)
		s = sqrtf(sa / sb);
	if (fa == fs)
		s = -s;
	cxp = s * rx * y1p / ry;
	cyp = s * -ry * x1p / rx;

	// 3) Compute cx,cy from cx',cy'
	cx = (x1 + x2)/2.0f + cosrx*cxp - sinrx*cyp;
	cy = (y1 + y2)/2.0f + sinrx*cxp + cosrx*cyp;

	// 4) Calculate theta1, and delta theta.
	ux = (x1p - cxp) / rx;
	uy = (y1p - cyp) / ry;
	vx = (-x1p - cxp) / rx;
	vy = (-y1p - cyp) / ry;
	a1 = nsvg__vecang(1.0f,0.0f, ux,uy);	// Initial angle
	da = nsvg__vecang(ux,uy, vx,vy);		// Delta angle

//	if (vecrat(ux,uy,vx,vy) <= -1.0f) da = NSVG_PI;
//	if (vecrat(ux,uy,vx,vy) >= 1.0f) da = 0;

	if (fs == 0 && da > 0)
		da -= 2 * NSVG_PI;
	else if (fs == 1 && da < 0)
		da += 2 * NSVG_PI;

	// Approximate the arc using cubic spline segments.
	t[0] = cosrx; t[1] = sinrx;
	t[2] = -sinrx; t[3] = cosrx;
	t[4] = cx; t[5] = cy;

	// Split arc into max 90 degree segments.
	// The loop assumes an iteration per end point (including start and end), this +1.
	ndivs = (int)(fabsf(da) / (NSVG_PI*0.5f) + 1.0f);
	hda = (da / (float)ndivs) / 2.0f;
	kappa = fabsf(4.0f / 3.0f * (1.0f - cosf(hda)) / sinf(hda));
	if (da < 0.0f)
		kappa = -kappa;

	for (i = 0; i <= ndivs; i++) {
		a = a1 + da * ((float)i/(float)ndivs);
		dx = cosf(a);
		dy = sinf(a);
		nsvg__xformPoint(&x, &y, dx*rx, dy*ry, t); // position
		nsvg__xformVec(&tanx, &tany, -dy*rx * kappa, dx*ry * kappa, t); // tangent
		if (i > 0)
			nsvg__cubicBezTo(p, px+ptanx,py+ptany, x-tanx, y-tany, x, y);
		px = x;
		py = y;
		ptanx = tanx;
		ptany = tany;
	}

	*cpx = x2;
	*cpy = y2;
}

static void nsvg__parsePath(NSVGparser* p, const char** attr)
{
	const char* s = NULL;
	char cmd = '\0';
	float args[10];
	int nargs;
	int rargs = 0;
	float cpx, cpy, cpx2, cpy2;
	const char* tmp[4];
	char closedFlag;
	int i;
	char item[64];

	for (i = 0; attr[i]; i += 2) {
		if (strcmp(attr[i], "d") == 0) {
			s = attr[i + 1];
		} else {
			tmp[0] = attr[i];
			tmp[1] = attr[i + 1];
			tmp[2] = 0;
			tmp[3] = 0;
			nsvg__parseAttribs(p, tmp);
		}
	}

	if (s) {
		nsvg__resetPath(p);
		cpx = 0; cpy = 0;
		cpx2 = 0; cpy2 = 0;
		closedFlag = 0;
		nargs = 0;

		while (*s) {
			s = nsvg__getNextPathItem(s, item);
			if (!*item) break;
			if (nsvg__isnum(item[0])) {
				if (nargs < 10)
					args[nargs++] = (float)nsvg__atof(item);
				if (nargs >= rargs) {
					switch (cmd) {
						case 'm':
						case 'M':
							nsvg__pathMoveTo(p, &cpx, &cpy, args, cmd == 'm' ? 1 : 0);
							// Moveto can be followed by multiple coordinate pairs,
							// which should be treated as linetos.
							cmd = (cmd == 'm') ? 'l' : 'L';
							rargs = nsvg__getArgsPerElement(cmd);
							cpx2 = cpx; cpy2 = cpy;
							break;
						case 'l':
						case 'L':
							nsvg__pathLineTo(p, &cpx, &cpy, args, cmd == 'l' ? 1 : 0);
							cpx2 = cpx; cpy2 = cpy;
							break;
						case 'H':
						case 'h':
							nsvg__pathHLineTo(p, &cpx, &cpy, args, cmd == 'h' ? 1 : 0);
							cpx2 = cpx; cpy2 = cpy;
							break;
						case 'V':
						case 'v':
							nsvg__pathVLineTo(p, &cpx, &cpy, args, cmd == 'v' ? 1 : 0);
							cpx2 = cpx; cpy2 = cpy;
							break;
						case 'C':
						case 'c':
							nsvg__pathCubicBezTo(p, &cpx, &cpy, &cpx2, &cpy2, args, cmd == 'c' ? 1 : 0);
							break;
						case 'S':
						case 's':
							nsvg__pathCubicBezShortTo(p, &cpx, &cpy, &cpx2, &cpy2, args, cmd == 's' ? 1 : 0);
							break;
						case 'Q':
						case 'q':
							nsvg__pathQuadBezTo(p, &cpx, &cpy, &cpx2, &cpy2, args, cmd == 'q' ? 1 : 0);
							break;
						case 'T':
						case 't':
							nsvg__pathQuadBezShortTo(p, &cpx, &cpy, &cpx2, &cpy2, args, cmd == 't' ? 1 : 0);
							break;
						case 'A':
						case 'a':
							nsvg__pathArcTo(p, &cpx, &cpy, args, cmd == 'a' ? 1 : 0);
							cpx2 = cpx; cpy2 = cpy;
							break;
						default:
							if (nargs >= 2) {
								cpx = args[nargs-2];
								cpy = args[nargs-1];
								cpx2 = cpx; cpy2 = cpy;
							}
							break;
					}
					nargs = 0;
				}
			} else {
				cmd = item[0];
				rargs = nsvg__getArgsPerElement(cmd);
				if (cmd == 'M' || cmd == 'm') {
					// Commit path.
					if (p->npts > 0)
						nsvg__addPath(p, closedFlag);
					// Start new subpath.
					nsvg__resetPath(p);
					closedFlag = 0;
					nargs = 0;
				} else if (cmd == 'Z' || cmd == 'z') {
					closedFlag = 1;
					// Commit path.
					if (p->npts > 0) {
						// Move current point to first point
						cpx = p->pts[0];
						cpy = p->pts[1];
						cpx2 = cpx; cpy2 = cpy;
						nsvg__addPath(p, closedFlag);
					}
					// Start new subpath.
					nsvg__resetPath(p);
					nsvg__moveTo(p, cpx, cpy);
					closedFlag = 0;
					nargs = 0;
				}
			}
		}
		// Commit path.
		if (p->npts)
			nsvg__addPath(p, closedFlag);
	}

	nsvg__addShape(p);
}

static void nsvg__parseRect(NSVGparser* p, const char** attr)
{
	float x = 0.0f;
	float y = 0.0f;
	float w = 0.0f;
	float h = 0.0f;
	float rx = -1.0f; // marks not set
	float ry = -1.0f;
	int i;

	for (i = 0; attr[i]; i += 2) {
		if (!nsvg__parseAttr(p, attr[i], attr[i + 1])) {
			if (strcmp(attr[i], "x") == 0) x = nsvg__parseCoordinate(p, attr[i+1], nsvg__actualOrigX(p), nsvg__actualWidth(p));
			if (strcmp(attr[i], "y") == 0) y = nsvg__parseCoordinate(p, attr[i+1], nsvg__actualOrigY(p), nsvg__actualHeight(p));
			if (strcmp(attr[i], "width") == 0) w = nsvg__parseCoordinate(p, attr[i+1], 0.0f, nsvg__actualWidth(p));
			if (strcmp(attr[i], "height") == 0) h = nsvg__parseCoordinate(p, attr[i+1], 0.0f, nsvg__actualHeight(p));
			if (strcmp(attr[i], "rx") == 0) rx = fabsf(nsvg__parseCoordinate(p, attr[i+1], 0.0f, nsvg__actualWidth(p)));
			if (strcmp(attr[i], "ry") == 0) ry = fabsf(nsvg__parseCoordinate(p, attr[i+1], 0.0f, nsvg__actualHeight(p)));
		}
	}

	if (rx < 0.0f && ry > 0.0f) rx = ry;
	if (ry < 0.0f && rx > 0.0f) ry = rx;
	if (rx < 0.0f) rx = 0.0f;
	if (ry < 0.0f) ry = 0.0f;
	if (rx > w/2.0f) rx = w/2.0f;
	if (ry > h/2.0f) ry = h/2.0f;

	if (w != 0.0f && h != 0.0f) {
		nsvg__resetPath(p);

		if (rx < 0.00001f || ry < 0.0001f) {
			nsvg__moveTo(p, x, y);
			nsvg__lineTo(p, x+w, y);
			nsvg__lineTo(p, x+w, y+h);
			nsvg__lineTo(p, x, y+h);
		} else {
			// Rounded rectangle
			nsvg__moveTo(p, x+rx, y);
			nsvg__lineTo(p, x+w-rx, y);
			nsvg__cubicBezTo(p, x+w-rx*(1-NSVG_KAPPA90), y, x+w, y+ry*(1-NSVG_KAPPA90), x+w, y+ry);
			nsvg__lineTo(p, x+w, y+h-ry);
			nsvg__cubicBezTo(p, x+w, y+h-ry*(1-NSVG_KAPPA90), x+w-rx*(1-NSVG_KAPPA90), y+h, x+w-rx, y+h);
			nsvg__lineTo(p, x+rx, y+h);
			nsvg__cubicBezTo(p, x+rx*(1-NSVG_KAPPA90), y+h, x, y+h-ry*(1-NSVG_KAPPA90), x, y+h-ry);
			nsvg__lineTo(p, x, y+ry);
			nsvg__cubicBezTo(p, x, y+ry*(1-NSVG_KAPPA90), x+rx*(1-NSVG_KAPPA90), y, x+rx, y);
		}

		nsvg__addPath(p, 1);

		nsvg__addShape(p);
	}
}

static void nsvg__parseCircle(NSVGparser* p, const char** attr)
{
	float cx = 0.0f;
	float cy = 0.0f;
	float r = 0.0f;
	int i;

	for (i = 0; attr[i]; i += 2) {
		if (!nsvg__parseAttr(p, attr[i], attr[i + 1])) {
			if (strcmp(attr[i], "cx") == 0) cx = nsvg__parseCoordinate(p, attr[i+1], nsvg__actualOrigX(p), nsvg__actualWidth(p));
			if (strcmp(attr[i], "cy") == 0) cy = nsvg__parseCoordinate(p, attr[i+1], nsvg__actualOrigY(p), nsvg__actualHeight(p));
			if (strcmp(attr[i], "r") == 0) r = fabsf(nsvg__parseCoordinate(p, attr[i+1], 0.0f, nsvg__actualLength(p)));
		}
	}

	if (r > 0.0f) {
		nsvg__resetPath(p);

		nsvg__moveTo(p, cx+r, cy);
		nsvg__cubicBezTo(p, cx+r, cy+r*NSVG_KAPPA90, cx+r*NSVG_KAPPA90, cy+r, cx, cy+r);
		nsvg__cubicBezTo(p, cx-r*NSVG_KAPPA90, cy+r, cx-r, cy+r*NSVG_KAPPA90, cx-r, cy);
		nsvg__cubicBezTo(p, cx-r, cy-r*NSVG_KAPPA90, cx-r*NSVG_KAPPA90, cy-r, cx, cy-r);
		nsvg__cubicBezTo(p, cx+r*NSVG_KAPPA90, cy-r, cx+r, cy-r*NSVG_KAPPA90, cx+r, cy);

		nsvg__addPath(p, 1);

		nsvg__addShape(p);
	}
}

static void nsvg__parseEllipse(NSVGparser* p, const char** attr)
{
	float cx = 0.0f;
	float cy = 0.0f;
	float rx = 0.0f;
	float ry = 0.0f;
	int i;

	for (i = 0; attr[i]; i += 2) {
		if (!nsvg__parseAttr(p, attr[i], attr[i + 1])) {
			if (strcmp(attr[i], "cx") == 0) cx = nsvg__parseCoordinate(p, attr[i+1], nsvg__actualOrigX(p), nsvg__actualWidth(p));
			if (strcmp(attr[i], "cy") == 0) cy = nsvg__parseCoordinate(p, attr[i+1], nsvg__actualOrigY(p), nsvg__actualHeight(p));
			if (strcmp(attr[i], "rx") == 0) rx = fabsf(nsvg__parseCoordinate(p, attr[i+1], 0.0f, nsvg__actualWidth(p)));
			if (strcmp(attr[i], "ry") == 0) ry = fabsf(nsvg__parseCoordinate(p, attr[i+1], 0.0f, nsvg__actualHeight(p)));
		}
	}

	if (rx > 0.0f && ry > 0.0f) {

		nsvg__resetPath(p);

		nsvg__moveTo(p, cx+rx, cy);
		nsvg__cubicBezTo(p, cx+rx, cy+ry*NSVG_KAPPA90, cx+rx*NSVG_KAPPA90, cy+ry, cx, cy+ry);
		nsvg__cubicBezTo(p, cx-rx*NSVG_KAPPA90, cy+ry, cx-rx, cy+ry*NSVG_KAPPA90, cx-rx, cy);
		nsvg__cubicBezTo(p, cx-rx, cy-ry*NSVG_KAPPA90, cx-rx*NSVG_KAPPA90, cy-ry, cx, cy-ry);
		nsvg__cubicBezTo(p, cx+rx*NSVG_KAPPA90, cy-ry, cx+rx, cy-ry*NSVG_KAPPA90, cx+rx, cy);

		nsvg__addPath(p, 1);

		nsvg__addShape(p);
	}
}

static void nsvg__parseLine(NSVGparser* p, const char** attr)
{
	float x1 = 0.0;
	float y1 = 0.0;
	float x2 = 0.0;
	float y2 = 0.0;
	int i;

	for (i = 0; attr[i]; i += 2) {
		if (!nsvg__parseAttr(p, attr[i], attr[i + 1])) {
			if (strcmp(attr[i], "x1") == 0) x1 = nsvg__parseCoordinate(p, attr[i + 1], nsvg__actualOrigX(p), nsvg__actualWidth(p));
			if (strcmp(attr[i], "y1") == 0) y1 = nsvg__parseCoordinate(p, attr[i + 1], nsvg__actualOrigY(p), nsvg__actualHeight(p));
			if (strcmp(attr[i], "x2") == 0) x2 = nsvg__parseCoordinate(p, attr[i + 1], nsvg__actualOrigX(p), nsvg__actualWidth(p));
			if (strcmp(attr[i], "y2") == 0) y2 = nsvg__parseCoordinate(p, attr[i + 1], nsvg__actualOrigY(p), nsvg__actualHeight(p));
		}
	}

	nsvg__resetPath(p);

	nsvg__moveTo(p, x1, y1);
	nsvg__lineTo(p, x2, y2);

	nsvg__addPath(p, 0);

	nsvg__addShape(p);
}

static void nsvg__parsePoly(NSVGparser* p, const char** attr, int closeFlag)
{
	int i;
	const char* s;
	float args[2];
	int nargs, npts = 0;
	char item[64];

	nsvg__resetPath(p);

	for (i = 0; attr[i]; i += 2) {
		if (!nsvg__parseAttr(p, attr[i], attr[i + 1])) {
			if (strcmp(attr[i], "points") == 0) {
				s = attr[i + 1];
				nargs = 0;
				while (*s) {
					s = nsvg__getNextPathItem(s, item);
					args[nargs++] = (float)nsvg__atof(item);
					if (nargs >= 2) {
						if (npts == 0)
							nsvg__moveTo(p, args[0], args[1]);
						else
							nsvg__lineTo(p, args[0], args[1]);
						nargs = 0;
						npts++;
					}
				}
			}
		}
	}

	nsvg__addPath(p, (char)closeFlag);

	nsvg__addShape(p);
}

static void nsvg__parseSVG(NSVGparser* p, const char** attr)
{
	int i;
	for (i = 0; attr[i]; i += 2) {
		if (!nsvg__parseAttr(p, attr[i], attr[i + 1])) {
			if (strcmp(attr[i], "width") == 0) {
				p->image->width = nsvg__parseCoordinate(p, attr[i + 1], 0.0f, 0.0f);
			} else if (strcmp(attr[i], "height") == 0) {
				p->image->height = nsvg__parseCoordinate(p, attr[i + 1], 0.0f, 0.0f);
			} else if (strcmp(attr[i], "viewBox") == 0) {
				sscanf(attr[i + 1], "%f%*[%%, \t]%f%*[%%, \t]%f%*[%%, \t]%f", &p->viewMinx, &p->viewMiny, &p->viewWidth, &p->viewHeight);
			} else if (strcmp(attr[i], "preserveAspectRatio") == 0) {
				if (strstr(attr[i + 1], "none") != 0) {
					// No uniform scaling
					p->alignType = NSVG_ALIGN_NONE;
				} else {
					// Parse X align
					if (strstr(attr[i + 1], "xMin") != 0)
						p->alignX = NSVG_ALIGN_MIN;
					else if (strstr(attr[i + 1], "xMid") != 0)
						p->alignX = NSVG_ALIGN_MID;
					else if (strstr(attr[i + 1], "xMax") != 0)
						p->alignX = NSVG_ALIGN_MAX;
					// Parse X align
					if (strstr(attr[i + 1], "yMin") != 0)
						p->alignY = NSVG_ALIGN_MIN;
					else if (strstr(attr[i + 1], "yMid") != 0)
						p->alignY = NSVG_ALIGN_MID;
					else if (strstr(attr[i + 1], "yMax") != 0)
						p->alignY = NSVG_ALIGN_MAX;
					// Parse meet/slice
					p->alignType = NSVG_ALIGN_MEET;
					if (strstr(attr[i + 1], "slice") != 0)
						p->alignType = NSVG_ALIGN_SLICE;
				}
			}
		}
	}
}

static void nsvg__parseGradient(NSVGparser* p, const char** attr, char type)
{
	int i;
	NSVGgradientData* grad = (NSVGgradientData*)NANOSVG_malloc(sizeof(NSVGgradientData));
	if (grad == NULL) return;
	memset(grad, 0, sizeof(NSVGgradientData));
	grad->units = NSVG_OBJECT_SPACE;
	grad->type = type;
	if (grad->type == NSVG_PAINT_LINEAR_GRADIENT) {
		grad->linear.x1 = nsvg__coord(0.0f, NSVG_UNITS_PERCENT);
		grad->linear.y1 = nsvg__coord(0.0f, NSVG_UNITS_PERCENT);
		grad->linear.x2 = nsvg__coord(100.0f, NSVG_UNITS_PERCENT);
		grad->linear.y2 = nsvg__coord(0.0f, NSVG_UNITS_PERCENT);
	} else if (grad->type == NSVG_PAINT_RADIAL_GRADIENT) {
		grad->radial.cx = nsvg__coord(50.0f, NSVG_UNITS_PERCENT);
		grad->radial.cy = nsvg__coord(50.0f, NSVG_UNITS_PERCENT);
		grad->radial.r = nsvg__coord(50.0f, NSVG_UNITS_PERCENT);
	}

	nsvg__xformIdentity(grad->xform);

	for (i = 0; attr[i]; i += 2) {
		if (strcmp(attr[i], "id") == 0) {
			strncpy(grad->id, attr[i+1], 63);
			grad->id[63] = '\0';
		} else if (!nsvg__parseAttr(p, attr[i], attr[i + 1])) {
			if (strcmp(attr[i], "gradientUnits") == 0) {
				if (strcmp(attr[i+1], "objectBoundingBox") == 0)
					grad->units = NSVG_OBJECT_SPACE;
				else
					grad->units = NSVG_USER_SPACE;
			} else if (strcmp(attr[i], "gradientTransform") == 0) {
				nsvg__parseTransform(grad->xform, attr[i + 1]);
			} else if (strcmp(attr[i], "cx") == 0) {
				grad->radial.cx = nsvg__parseCoordinateRaw(attr[i + 1]);
			} else if (strcmp(attr[i], "cy") == 0) {
				grad->radial.cy = nsvg__parseCoordinateRaw(attr[i + 1]);
			} else if (strcmp(attr[i], "r") == 0) {
				grad->radial.r = nsvg__parseCoordinateRaw(attr[i + 1]);
			} else if (strcmp(attr[i], "fx") == 0) {
				grad->radial.fx = nsvg__parseCoordinateRaw(attr[i + 1]);
			} else if (strcmp(attr[i], "fy") == 0) {
				grad->radial.fy = nsvg__parseCoordinateRaw(attr[i + 1]);
			} else if (strcmp(attr[i], "x1") == 0) {
				grad->linear.x1 = nsvg__parseCoordinateRaw(attr[i + 1]);
			} else if (strcmp(attr[i], "y1") == 0) {
				grad->linear.y1 = nsvg__parseCoordinateRaw(attr[i + 1]);
			} else if (strcmp(attr[i], "x2") == 0) {
				grad->linear.x2 = nsvg__parseCoordinateRaw(attr[i + 1]);
			} else if (strcmp(attr[i], "y2") == 0) {
				grad->linear.y2 = nsvg__parseCoordinateRaw(attr[i + 1]);
			} else if (strcmp(attr[i], "spreadMethod") == 0) {
				if (strcmp(attr[i+1], "pad") == 0)
					grad->spread = NSVG_SPREAD_PAD;
				else if (strcmp(attr[i+1], "reflect") == 0)
					grad->spread = NSVG_SPREAD_REFLECT;
				else if (strcmp(attr[i+1], "repeat") == 0)
					grad->spread = NSVG_SPREAD_REPEAT;
			} else if (strcmp(attr[i], "xlink:href") == 0) {
				const char *href = attr[i+1];
				strncpy(grad->ref, href+1, 62);
				grad->ref[62] = '\0';
			}
		}
	}

	grad->next = p->gradients;
	p->gradients = grad;
}

static void nsvg__parseGradientStop(NSVGparser* p, const char** attr)
{
	NSVGattrib* curAttr = nsvg__getAttr(p);
	NSVGgradientData* grad;
	NSVGgradientStop* stop;
	int i, idx;

	curAttr->stopOffset = 0;
	curAttr->stopColor = 0;
	curAttr->stopOpacity = 1.0f;

	for (i = 0; attr[i]; i += 2) {
		nsvg__parseAttr(p, attr[i], attr[i + 1]);
	}

	// Add stop to the last gradient.
	grad = p->gradients;
	if (grad == NULL) return;

	grad->nstops++;
	grad->stops = (NSVGgradientStop*)NANOSVG_realloc(grad->stops, sizeof(NSVGgradientStop)*grad->nstops);
	if (grad->stops == NULL) return;

	// Insert
	idx = grad->nstops-1;
	for (i = 0; i < grad->nstops-1; i++) {
		if (curAttr->stopOffset < grad->stops[i].offset) {
			idx = i;
			break;
		}
	}
	if (idx != grad->nstops-1) {
		for (i = grad->nstops-1; i > idx; i--)
			grad->stops[i] = grad->stops[i-1];
	}

	stop = &grad->stops[idx];
	stop->color = curAttr->stopColor;
	stop->color |= (unsigned int)(curAttr->stopOpacity*255) << 24;
	stop->offset = curAttr->stopOffset;
}

static void nsvg__startElement(void* ud, const char* el, const char** attr)
{
	NSVGparser* p = (NSVGparser*)ud;

	if (p->defsFlag) {
		// Skip everything but gradients in defs
		if (strcmp(el, "linearGradient") == 0) {
			nsvg__parseGradient(p, attr, NSVG_PAINT_LINEAR_GRADIENT);
		} else if (strcmp(el, "radialGradient") == 0) {
			nsvg__parseGradient(p, attr, NSVG_PAINT_RADIAL_GRADIENT);
		} else if (strcmp(el, "stop") == 0) {
			nsvg__parseGradientStop(p, attr);
		}
		return;
	}

	if (strcmp(el, "g") == 0) {
		nsvg__pushAttr(p);
		nsvg__parseAttribs(p, attr);
	} else if (strcmp(el, "path") == 0) {
		if (p->pathFlag)	// Do not allow nested paths.
			return;
		nsvg__pushAttr(p);
		nsvg__parsePath(p, attr);
		nsvg__popAttr(p);
	} else if (strcmp(el, "rect") == 0) {
		nsvg__pushAttr(p);
		nsvg__parseRect(p, attr);
		nsvg__popAttr(p);
	} else if (strcmp(el, "circle") == 0) {
		nsvg__pushAttr(p);
		nsvg__parseCircle(p, attr);
		nsvg__popAttr(p);
	} else if (strcmp(el, "ellipse") == 0) {
		nsvg__pushAttr(p);
		nsvg__parseEllipse(p, attr);
		nsvg__popAttr(p);
	} else if (strcmp(el, "line") == 0)  {
		nsvg__pushAttr(p);
		nsvg__parseLine(p, attr);
		nsvg__popAttr(p);
	} else if (strcmp(el, "polyline") == 0)  {
		nsvg__pushAttr(p);
		nsvg__parsePoly(p, attr, 0);
		nsvg__popAttr(p);
	} else if (strcmp(el, "polygon") == 0)  {
		nsvg__pushAttr(p);
		nsvg__parsePoly(p, attr, 1);
		nsvg__popAttr(p);
	} else  if (strcmp(el, "linearGradient") == 0) {
		nsvg__parseGradient(p, attr, NSVG_PAINT_LINEAR_GRADIENT);
	} else if (strcmp(el, "radialGradient") == 0) {
		nsvg__parseGradient(p, attr, NSVG_PAINT_RADIAL_GRADIENT);
	} else if (strcmp(el, "stop") == 0) {
		nsvg__parseGradientStop(p, attr);
	} else if (strcmp(el, "defs") == 0) {
		p->defsFlag = 1;
	} else if (strcmp(el, "svg") == 0) {
		nsvg__parseSVG(p, attr);
	} else if (strcmp(el, "style") == 0) {
		p->styleFlag = 1;
	}
}

static void nsvg__endElement(void* ud, const char* el)
{
	NSVGparser* p = (NSVGparser*)ud;

	if (strcmp(el, "g") == 0) {
		nsvg__popAttr(p);
	} else if (strcmp(el, "path") == 0) {
		p->pathFlag = 0;
	} else if (strcmp(el, "defs") == 0) {
		p->defsFlag = 0;
	} else if (strcmp(el, "style") == 0) {
		p->styleFlag = 0;
	}
}

static char *nsvg__strndup(const char *s, size_t n)
{
	char *result;
	size_t len = strlen(s);

	if (n < len)
		len = n;

	result = (char*)NANOSVG_malloc(len+1);
	if (!result)
		return 0;

	result[len] = '\0';
	return (char *)memcpy(result, s, len);
}

static void nsvg__content(void* ud, const char* s)
{
	NSVGparser* p = (NSVGparser*)ud;
	if (p->styleFlag) {

		int state = 0;
		const char* start = NULL;
		while (*s) {
			char c = *s;
			if (nsvg__isspace(c) || c == '{') {
				if (state == 1) {
					NSVGstyles* next = p->styles;

					p->styles = (NSVGstyles*)malloc(sizeof(NSVGstyles));
					p->styles->next = next;
					p->styles->name = nsvg__strndup(start, (size_t)(s - start));
					start = s + 1;
					state = 2;
				}
			} else if (state == 2 && c == '}') {
				p->styles->description = nsvg__strndup(start, (size_t)(s - start));
				state = 0;
			}
			else if (state == 0) {
				start = s;
				state = 1;
			}
			s++;
		/*
			if (*s == '{' && state == NSVG_XML_CONTENT) {
				// Start of a tag
				*s++ = '\0';
				nsvg__parseContent(mark, contentCb, ud);
				mark = s;
				state = NSVG_XML_TAG;
			}
			else if (*s == '>' && state == NSVG_XML_TAG) {
				// Start of a content or new tag.
				*s++ = '\0';
				nsvg__parseElement(mark, startelCb, endelCb, ud);
				mark = s;
				state = NSVG_XML_CONTENT;
			}
			else {
				s++;
			}
		*/
		}

	}
}

static void nsvg__imageBounds(NSVGparser* p, float* bounds)
{
	NSVGshape* shape;
	shape = p->image->shapes;
	if (shape == NULL) {
		bounds[0] = bounds[1] = bounds[2] = bounds[3] = 0.0;
		return;
	}
	bounds[0] = shape->bounds[0];
	bounds[1] = shape->bounds[1];
	bounds[2] = shape->bounds[2];
	bounds[3] = shape->bounds[3];
	for (shape = shape->next; shape != NULL; shape = shape->next) {
		bounds[0] = nsvg__minf(bounds[0], shape->bounds[0]);
		bounds[1] = nsvg__minf(bounds[1], shape->bounds[1]);
		bounds[2] = nsvg__maxf(bounds[2], shape->bounds[2]);
		bounds[3] = nsvg__maxf(bounds[3], shape->bounds[3]);
	}
}

static float nsvg__viewAlign(float content, float container, int type)
{
	if (type == NSVG_ALIGN_MIN)
		return 0;
	else if (type == NSVG_ALIGN_MAX)
		return container - content;
	// mid
	return (container - content) * 0.5f;
}

static void nsvg__scaleGradient(NSVGgradient* grad, float tx, float ty, float sx, float sy)
{
	float t[6];
	nsvg__xformSetTranslation(t, tx, ty);
	nsvg__xformMultiply (grad->xform, t);

	nsvg__xformSetScale(t, sx, sy);
	nsvg__xformMultiply (grad->xform, t);
}

static void nsvg__scaleToViewbox(NSVGparser* p, const char* units)
{
	NSVGshape* shape;
	NSVGpath* path;
	float tx, ty, sx, sy, us, bounds[4], t[6], avgs;
	int i;
	float* pt;

	// Guess image size if not set completely.
	nsvg__imageBounds(p, bounds);

	if (p->viewWidth == 0) {
		if (p->image->width > 0) {
			p->viewWidth = p->image->width;
		} else {
			p->viewMinx = bounds[0];
			p->viewWidth = bounds[2] - bounds[0];
		}
	}
	if (p->viewHeight == 0) {
		if (p->image->height > 0) {
			p->viewHeight = p->image->height;
		} else {
			p->viewMiny = bounds[1];
			p->viewHeight = bounds[3] - bounds[1];
		}
	}
	if (p->image->width == 0)
		p->image->width = p->viewWidth;
	if (p->image->height == 0)
		p->image->height = p->viewHeight;

	tx = -p->viewMinx;
	ty = -p->viewMiny;
	sx = p->viewWidth > 0 ? p->image->width / p->viewWidth : 0;
	sy = p->viewHeight > 0 ? p->image->height / p->viewHeight : 0;
	// Unit scaling
	us = 1.0f / nsvg__convertToPixels(p, nsvg__coord(1.0f, nsvg__parseUnits(units)), 0.0f, 1.0f);

	// Fix aspect ratio
	if (p->alignType == NSVG_ALIGN_MEET) {
		// fit whole image into viewbox
		sx = sy = nsvg__minf(sx, sy);
		tx += nsvg__viewAlign(p->viewWidth*sx, p->image->width, p->alignX) / sx;
		ty += nsvg__viewAlign(p->viewHeight*sy, p->image->height, p->alignY) / sy;
	} else if (p->alignType == NSVG_ALIGN_SLICE) {
		// fill whole viewbox with image
		sx = sy = nsvg__maxf(sx, sy);
		tx += nsvg__viewAlign(p->viewWidth*sx, p->image->width, p->alignX) / sx;
		ty += nsvg__viewAlign(p->viewHeight*sy, p->image->height, p->alignY) / sy;
	}

	// Transform
	sx *= us;
	sy *= us;
	avgs = (sx+sy) / 2.0f;
	for (shape = p->image->shapes; shape != NULL; shape = shape->next) {
		shape->bounds[0] = (shape->bounds[0] + tx) * sx;
		shape->bounds[1] = (shape->bounds[1] + ty) * sy;
		shape->bounds[2] = (shape->bounds[2] + tx) * sx;
		shape->bounds[3] = (shape->bounds[3] + ty) * sy;
		for (path = shape->paths; path != NULL; path = path->next) {
			path->bounds[0] = (path->bounds[0] + tx) * sx;
			path->bounds[1] = (path->bounds[1] + ty) * sy;
			path->bounds[2] = (path->bounds[2] + tx) * sx;
			path->bounds[3] = (path->bounds[3] + ty) * sy;
			for (i =0; i < path->npts; i++) {
				pt = &path->pts[i*2];
				pt[0] = (pt[0] + tx) * sx;
				pt[1] = (pt[1] + ty) * sy;
			}
		}

		if (shape->fill.type == NSVG_PAINT_LINEAR_GRADIENT || shape->fill.type == NSVG_PAINT_RADIAL_GRADIENT) {
			nsvg__scaleGradient(shape->fill.gradient, tx,ty, sx,sy);
			memcpy(t, shape->fill.gradient->xform, sizeof(float)*6);
			nsvg__xformInverse(shape->fill.gradient->xform, t);
		}
		if (shape->stroke.type == NSVG_PAINT_LINEAR_GRADIENT || shape->stroke.type == NSVG_PAINT_RADIAL_GRADIENT) {
			nsvg__scaleGradient(shape->stroke.gradient, tx,ty, sx,sy);
			memcpy(t, shape->stroke.gradient->xform, sizeof(float)*6);
			nsvg__xformInverse(shape->stroke.gradient->xform, t);
		}

		shape->strokeWidth *= avgs;
		shape->strokeDashOffset *= avgs;
		for (i = 0; i < shape->strokeDashCount; i++)
			shape->strokeDashArray[i] *= avgs;
	}
}

NANOSVG_SCOPE
NSVGimage* nsvgParse(char* input, const char* units, float dpi)
{
	NSVGparser* p;
	NSVGimage* ret = 0;

	p = nsvg__createParser();
	if (p == NULL) {
		return NULL;
	}
	p->dpi = dpi;

	nsvg__parseXML(input, nsvg__startElement, nsvg__endElement, nsvg__content, p);

	// Scale to viewBox
	nsvg__scaleToViewbox(p, units);

	ret = p->image;
	p->image = NULL;

	nsvg__deleteParser(p);

	return ret;
}

NANOSVG_SCOPE
NSVGimage* nsvgParseFromFile(const char* filename, const char* units, float dpi)
{
	FILE* fp = NULL;
	size_t size;
	char* data = NULL;
	NSVGimage* image = NULL;

	fp = fopen(filename, "rb");
	if (!fp) goto error;
	fseek(fp, 0, SEEK_END);
	size = ftell(fp);
	fseek(fp, 0, SEEK_SET);
	data = (char*)NANOSVG_malloc(size+1);
	if (data == NULL) goto error;
	if (fread(data, 1, size, fp) != size) goto error;
	data[size] = '\0';	// Must be null terminated.
	fclose(fp);
	image = nsvgParse(data, units, dpi);
	NANOSVG_free(data);

	return image;

error:
	if (fp) fclose(fp);
	if (data) NANOSVG_free(data);
	if (image) nsvgDelete(image);
	return NULL;
}

NANOSVG_SCOPE
void nsvgDelete(NSVGimage* image)
{
	NSVGshape *snext, *shape;
	if (image == NULL) return;
	shape = image->shapes;
	while (shape != NULL) {
		snext = shape->next;
		nsvg__deletePaths(shape->paths);
		nsvg__deletePaint(&shape->fill);
		nsvg__deletePaint(&shape->stroke);
		NANOSVG_free(shape);
		shape = snext;
	}
	NANOSVG_free(image);
}

#endif

Added generic/nanosvgrast.h.






















































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































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/*
 * Copyright (c) 2013-14 Mikko Mononen [email protected]
 *
 * This software is provided 'as-is', without any express or implied
 * warranty.  In no event will the authors be held liable for any damages
 * arising from the use of this software.
 *
 * Permission is granted to anyone to use this software for any purpose,
 * including commercial applications, and to alter it and redistribute it
 * freely, subject to the following restrictions:
 *
 * 1. The origin of this software must not be misrepresented; you must not
 * claim that you wrote the original software. If you use this software
 * in a product, an acknowledgment in the product documentation would be
 * appreciated but is not required.
 * 2. Altered source versions must be plainly marked as such, and must not be
 * misrepresented as being the original software.
 * 3. This notice may not be removed or altered from any source distribution.
 *
 * The polygon rasterization is heavily based on stb_truetype rasterizer
 * by Sean Barrett - http://nothings.org/
 *
 */

#ifndef NANOSVGRAST_H
#define NANOSVGRAST_H

#ifdef __cplusplus
extern "C" {
#endif

#ifndef NANOSVG_SCOPE
#define NANOSVG_SCOPE
#endif

#ifndef NANOSVG_malloc
#define NANOSVG_malloc malloc
#endif

#ifndef NANOSVG_realloc
#define NANOSVG_realloc realloc
#endif

#ifndef NANOSVG_free
#define NANOSVG_free free
#endif

typedef struct NSVGrasterizer NSVGrasterizer;

/* Example Usage:
	// Load SVG
	struct SNVGImage* image = nsvgParseFromFile("test.svg.");

	// Create rasterizer (can be used to render multiple images).
	struct NSVGrasterizer* rast = nsvgCreateRasterizer();
	// Allocate memory for image
	unsigned char* img = malloc(w*h*4);
	// Rasterize
	nsvgRasterize(rast, image, 0,0,1, img, w, h, w*4);
*/

// Allocated rasterizer context.
NANOSVG_SCOPE NSVGrasterizer* nsvgCreateRasterizer();

// Rasterizes SVG image, returns RGBA image (non-premultiplied alpha)
//   r - pointer to rasterizer context
//   image - pointer to image to rasterize
//   tx,ty - image offset (applied after scaling)
//   scale - image scale
//   dst - pointer to destination image data, 4 bytes per pixel (RGBA)
//   w - width of the image to render
//   h - height of the image to render
//   stride - number of bytes per scaleline in the destination buffer
NANOSVG_SCOPE void nsvgRasterize(NSVGrasterizer* r,
				   NSVGimage* image, float tx, float ty, float scale,
				   unsigned char* dst, int w, int h, int stride);

// Deletes rasterizer context.
NANOSVG_SCOPE void nsvgDeleteRasterizer(NSVGrasterizer*);


#ifdef __cplusplus
}
#endif

#endif // NANOSVGRAST_H

#ifdef NANOSVGRAST_IMPLEMENTATION

#include <math.h>

#define NSVG__SUBSAMPLES	5
#define NSVG__FIXSHIFT		10
#define NSVG__FIX			(1 << NSVG__FIXSHIFT)
#define NSVG__FIXMASK		(NSVG__FIX-1)
#define NSVG__MEMPAGE_SIZE	1024

typedef struct NSVGedge {
	float x0,y0, x1,y1;
	int dir;
	struct NSVGedge* next;
} NSVGedge;

typedef struct NSVGpoint {
	float x, y;
	float dx, dy;
	float len;
	float dmx, dmy;
	unsigned char flags;
} NSVGpoint;

typedef struct NSVGactiveEdge {
	int x,dx;
	float ey;
	int dir;
	struct NSVGactiveEdge *next;
} NSVGactiveEdge;

typedef struct NSVGmemPage {
	unsigned char mem[NSVG__MEMPAGE_SIZE];
	int size;
	struct NSVGmemPage* next;
} NSVGmemPage;

typedef struct NSVGcachedPaint {
	char type;
	char spread;
	float xform[6];
	unsigned int colors[256];
} NSVGcachedPaint;

struct NSVGrasterizer
{
	float px, py;

	float tessTol;
	float distTol;

	NSVGedge* edges;
	int nedges;
	int cedges;

	NSVGpoint* points;
	int npoints;
	int cpoints;

	NSVGpoint* points2;
	int npoints2;
	int cpoints2;

	NSVGactiveEdge* freelist;
	NSVGmemPage* pages;
	NSVGmemPage* curpage;

	unsigned char* scanline;
	int cscanline;

	unsigned char* bitmap;
	int width, height, stride;
};

NANOSVG_SCOPE
NSVGrasterizer* nsvgCreateRasterizer()
{
	NSVGrasterizer* r = (NSVGrasterizer*)NANOSVG_malloc(sizeof(NSVGrasterizer));
	if (r == NULL) goto error;
	memset(r, 0, sizeof(NSVGrasterizer));

	r->tessTol = 0.25f;
	r->distTol = 0.01f;

	return r;

error:
	nsvgDeleteRasterizer(r);
	return NULL;
}

NANOSVG_SCOPE
void nsvgDeleteRasterizer(NSVGrasterizer* r)
{
	NSVGmemPage* p;

	if (r == NULL) return;

	p = r->pages;
	while (p != NULL) {
		NSVGmemPage* next = p->next;
		NANOSVG_free(p);
		p = next;
	}

	if (r->edges) NANOSVG_free(r->edges);
	if (r->points) NANOSVG_free(r->points);
	if (r->points2) NANOSVG_free(r->points2);
	if (r->scanline) NANOSVG_free(r->scanline);

	NANOSVG_free(r);
}

static NSVGmemPage* nsvg__nextPage(NSVGrasterizer* r, NSVGmemPage* cur)
{
	NSVGmemPage *newp;

	// If using existing chain, return the next page in chain
	if (cur != NULL && cur->next != NULL) {
		return cur->next;
	}

	// Alloc new page
	newp = (NSVGmemPage*)NANOSVG_malloc(sizeof(NSVGmemPage));
	if (newp == NULL) return NULL;
	memset(newp, 0, sizeof(NSVGmemPage));

	// Add to linked list
	if (cur != NULL)
		cur->next = newp;
	else
		r->pages = newp;

	return newp;
}

static void nsvg__resetPool(NSVGrasterizer* r)
{
	NSVGmemPage* p = r->pages;
	while (p != NULL) {
		p->size = 0;
		p = p->next;
	}
	r->curpage = r->pages;
}

static unsigned char* nsvg__alloc(NSVGrasterizer* r, int size)
{
	unsigned char* buf;
	if (size > NSVG__MEMPAGE_SIZE) return NULL;
	if (r->curpage == NULL || r->curpage->size+size > NSVG__MEMPAGE_SIZE) {
		r->curpage = nsvg__nextPage(r, r->curpage);
	}
	buf = &r->curpage->mem[r->curpage->size];
	r->curpage->size += size;
	return buf;
}

static int nsvg__ptEquals(float x1, float y1, float x2, float y2, float tol)
{
	float dx = x2 - x1;
	float dy = y2 - y1;
	return dx*dx + dy*dy < tol*tol;
}

static void nsvg__addPathPoint(NSVGrasterizer* r, float x, float y, int flags)
{
	NSVGpoint* pt;

	if (r->npoints > 0) {
		pt = &r->points[r->npoints-1];
		if (nsvg__ptEquals(pt->x,pt->y, x,y, r->distTol)) {
			pt->flags = (unsigned char)(pt->flags | flags);
			return;
		}
	}

	if (r->npoints+1 > r->cpoints) {
		r->cpoints = r->cpoints > 0 ? r->cpoints * 2 : 64;
		r->points = (NSVGpoint*)NANOSVG_realloc(r->points, sizeof(NSVGpoint) * r->cpoints);
		if (r->points == NULL) return;
	}

	pt = &r->points[r->npoints];
	pt->x = x;
	pt->y = y;
	pt->flags = (unsigned char)flags;
	r->npoints++;
}

static void nsvg__appendPathPoint(NSVGrasterizer* r, NSVGpoint pt)
{
	if (r->npoints+1 > r->cpoints) {
		r->cpoints = r->cpoints > 0 ? r->cpoints * 2 : 64;
		r->points = (NSVGpoint*)NANOSVG_realloc(r->points, sizeof(NSVGpoint) * r->cpoints);
		if (r->points == NULL) return;
	}
	r->points[r->npoints] = pt;
	r->npoints++;
}

static void nsvg__duplicatePoints(NSVGrasterizer* r)
{
	if (r->npoints > r->cpoints2) {
		r->cpoints2 = r->npoints;
		r->points2 = (NSVGpoint*)NANOSVG_realloc(r->points2, sizeof(NSVGpoint) * r->cpoints2);
		if (r->points2 == NULL) return;
	}

	memcpy(r->points2, r->points, sizeof(NSVGpoint) * r->npoints);
	r->npoints2 = r->npoints;
}

static void nsvg__addEdge(NSVGrasterizer* r, float x0, float y0, float x1, float y1)
{
	NSVGedge* e;

	// Skip horizontal edges
	if (y0 == y1)
		return;

	if (r->nedges+1 > r->cedges) {
		r->cedges = r->cedges > 0 ? r->cedges * 2 : 64;
		r->edges = (NSVGedge*)NANOSVG_realloc(r->edges, sizeof(NSVGedge) * r->cedges);
		if (r->edges == NULL) return;
	}

	e = &r->edges[r->nedges];
	r->nedges++;

	if (y0 < y1) {
		e->x0 = x0;
		e->y0 = y0;
		e->x1 = x1;
		e->y1 = y1;
		e->dir = 1;
	} else {
		e->x0 = x1;
		e->y0 = y1;
		e->x1 = x0;
		e->y1 = y0;
		e->dir = -1;
	}
}

static float nsvg__normalize(float *x, float* y)
{
	float d = sqrtf((*x)*(*x) + (*y)*(*y));
	if (d > 1e-6f) {
		float id = 1.0f / d;
		*x *= id;
		*y *= id;
	}
	return d;
}

static float nsvg__absf(float x) { return x < 0 ? -x : x; }

static void nsvg__flattenCubicBez(NSVGrasterizer* r,
								  float x1, float y1, float x2, float y2,
								  float x3, float y3, float x4, float y4,
								  int level, int type)
{
	float x12,y12,x23,y23,x34,y34,x123,y123,x234,y234,x1234,y1234;
	float dx,dy,d2,d3;

	if (level > 10) return;

	x12 = (x1+x2)*0.5f;
	y12 = (y1+y2)*0.5f;
	x23 = (x2+x3)*0.5f;
	y23 = (y2+y3)*0.5f;
	x34 = (x3+x4)*0.5f;
	y34 = (y3+y4)*0.5f;
	x123 = (x12+x23)*0.5f;
	y123 = (y12+y23)*0.5f;

	dx = x4 - x1;
	dy = y4 - y1;
	d2 = nsvg__absf(((x2 - x4) * dy - (y2 - y4) * dx));
	d3 = nsvg__absf(((x3 - x4) * dy - (y3 - y4) * dx));

	if ((d2 + d3)*(d2 + d3) < r->tessTol * (dx*dx + dy*dy)) {
		nsvg__addPathPoint(r, x4, y4, type);
		return;
	}

	x234 = (x23+x34)*0.5f;
	y234 = (y23+y34)*0.5f;
	x1234 = (x123+x234)*0.5f;
	y1234 = (y123+y234)*0.5f;

	nsvg__flattenCubicBez(r, x1,y1, x12,y12, x123,y123, x1234,y1234, level+1, 0);
	nsvg__flattenCubicBez(r, x1234,y1234, x234,y234, x34,y34, x4,y4, level+1, type);
}

static void nsvg__flattenShape(NSVGrasterizer* r, NSVGshape* shape, float scale)
{
	int i, j;
	NSVGpath* path;

	for (path = shape->paths; path != NULL; path = path->next) {
		r->npoints = 0;
		// Flatten path
		nsvg__addPathPoint(r, path->pts[0]*scale, path->pts[1]*scale, 0);
		for (i = 0; i < path->npts-1; i += 3) {
			float* p = &path->pts[i*2];
			nsvg__flattenCubicBez(r, p[0]*scale,p[1]*scale, p[2]*scale,p[3]*scale, p[4]*scale,p[5]*scale, p[6]*scale,p[7]*scale, 0, 0);
		}
		// Close path
		nsvg__addPathPoint(r, path->pts[0]*scale, path->pts[1]*scale, 0);
		// Build edges
		for (i = 0, j = r->npoints-1; i < r->npoints; j = i++)
			nsvg__addEdge(r, r->points[j].x, r->points[j].y, r->points[i].x, r->points[i].y);
	}
}

enum NSVGpointFlags
{
	NSVG_PT_CORNER = 0x01,
	NSVG_PT_BEVEL = 0x02,
	NSVG_PT_LEFT = 0x04
};

static void nsvg__initClosed(NSVGpoint* left, NSVGpoint* right, NSVGpoint* p0, NSVGpoint* p1, float lineWidth)
{
	float w = lineWidth * 0.5f;
	float dx = p1->x - p0->x;
	float dy = p1->y - p0->y;
	float len = nsvg__normalize(&dx, &dy);
	float px = p0->x + dx*len*0.5f, py = p0->y + dy*len*0.5f;
	float dlx = dy, dly = -dx;
	float lx = px - dlx*w, ly = py - dly*w;
	float rx = px + dlx*w, ry = py + dly*w;
	left->x = lx; left->y = ly;
	right->x = rx; right->y = ry;
}

static void nsvg__buttCap(NSVGrasterizer* r, NSVGpoint* left, NSVGpoint* right, NSVGpoint* p, float dx, float dy, float lineWidth, int connect)
{
	float w = lineWidth * 0.5f;
	float px = p->x, py = p->y;
	float dlx = dy, dly = -dx;
	float lx = px - dlx*w, ly = py - dly*w;
	float rx = px + dlx*w, ry = py + dly*w;

	nsvg__addEdge(r, lx, ly, rx, ry);

	if (connect) {
		nsvg__addEdge(r, left->x, left->y, lx, ly);
		nsvg__addEdge(r, rx, ry, right->x, right->y);
	}
	left->x = lx; left->y = ly;
	right->x = rx; right->y = ry;
}

static void nsvg__squareCap(NSVGrasterizer* r, NSVGpoint* left, NSVGpoint* right, NSVGpoint* p, float dx, float dy, float lineWidth, int connect)
{
	float w = lineWidth * 0.5f;
	float px = p->x - dx*w, py = p->y - dy*w;
	float dlx = dy, dly = -dx;
	float lx = px - dlx*w, ly = py - dly*w;
	float rx = px + dlx*w, ry = py + dly*w;

	nsvg__addEdge(r, lx, ly, rx, ry);

	if (connect) {
		nsvg__addEdge(r, left->x, left->y, lx, ly);
		nsvg__addEdge(r, rx, ry, right->x, right->y);
	}
	left->x = lx; left->y = ly;
	right->x = rx; right->y = ry;
}

#ifndef NSVG_PI
#define NSVG_PI (3.14159265358979323846264338327f)
#endif

static void nsvg__roundCap(NSVGrasterizer* r, NSVGpoint* left, NSVGpoint* right, NSVGpoint* p, float dx, float dy, float lineWidth, int ncap, int connect)
{
	int i;
	float w = lineWidth * 0.5f;
	float px = p->x, py = p->y;
	float dlx = dy, dly = -dx;
	float lx = 0, ly = 0, rx = 0, ry = 0, prevx = 0, prevy = 0;

	for (i = 0; i < ncap; i++) {
		float a = (float)i/(float)(ncap-1)*NSVG_PI;
		float ax = cosf(a) * w, ay = sinf(a) * w;
		float x = px - dlx*ax - dx*ay;
		float y = py - dly*ax - dy*ay;

		if (i > 0)
			nsvg__addEdge(r, prevx, prevy, x, y);

		prevx = x;
		prevy = y;

		if (i == 0) {
			lx = x; ly = y;
		} else if (i == ncap-1) {
			rx = x; ry = y;
		}
	}

	if (connect) {
		nsvg__addEdge(r, left->x, left->y, lx, ly);
		nsvg__addEdge(r, rx, ry, right->x, right->y);
	}

	left->x = lx; left->y = ly;
	right->x = rx; right->y = ry;
}

static void nsvg__bevelJoin(NSVGrasterizer* r, NSVGpoint* left, NSVGpoint* right, NSVGpoint* p0, NSVGpoint* p1, float lineWidth)
{
	float w = lineWidth * 0.5f;
	float dlx0 = p0->dy, dly0 = -p0->dx;
	float dlx1 = p1->dy, dly1 = -p1->dx;
	float lx0 = p1->x - (dlx0 * w), ly0 = p1->y - (dly0 * w);
	float rx0 = p1->x + (dlx0 * w), ry0 = p1->y + (dly0 * w);
	float lx1 = p1->x - (dlx1 * w), ly1 = p1->y - (dly1 * w);
	float rx1 = p1->x + (dlx1 * w), ry1 = p1->y + (dly1 * w);

	nsvg__addEdge(r, lx0, ly0, left->x, left->y);
	nsvg__addEdge(r, lx1, ly1, lx0, ly0);

	nsvg__addEdge(r, right->x, right->y, rx0, ry0);
	nsvg__addEdge(r, rx0, ry0, rx1, ry1);

	left->x = lx1; left->y = ly1;
	right->x = rx1; right->y = ry1;
}

static void nsvg__miterJoin(NSVGrasterizer* r, NSVGpoint* left, NSVGpoint* right, NSVGpoint* p0, NSVGpoint* p1, float lineWidth)
{
	float w = lineWidth * 0.5f;
	float dlx0 = p0->dy, dly0 = -p0->dx;
	float dlx1 = p1->dy, dly1 = -p1->dx;
	float lx0, rx0, lx1, rx1;
	float ly0, ry0, ly1, ry1;

	if (p1->flags & NSVG_PT_LEFT) {
		lx0 = lx1 = p1->x - p1->dmx * w;
		ly0 = ly1 = p1->y - p1->dmy * w;
		nsvg__addEdge(r, lx1, ly1, left->x, left->y);

		rx0 = p1->x + (dlx0 * w);
		ry0 = p1->y + (dly0 * w);
		rx1 = p1->x + (dlx1 * w);
		ry1 = p1->y + (dly1 * w);
		nsvg__addEdge(r, right->x, right->y, rx0, ry0);
		nsvg__addEdge(r, rx0, ry0, rx1, ry1);
	} else {
		lx0 = p1->x - (dlx0 * w);
		ly0 = p1->y - (dly0 * w);
		lx1 = p1->x - (dlx1 * w);
		ly1 = p1->y - (dly1 * w);
		nsvg__addEdge(r, lx0, ly0, left->x, left->y);
		nsvg__addEdge(r, lx1, ly1, lx0, ly0);

		rx0 = rx1 = p1->x + p1->dmx * w;
		ry0 = ry1 = p1->y + p1->dmy * w;
		nsvg__addEdge(r, right->x, right->y, rx1, ry1);
	}

	left->x = lx1; left->y = ly1;
	right->x = rx1; right->y = ry1;
}

static void nsvg__roundJoin(NSVGrasterizer* r, NSVGpoint* left, NSVGpoint* right, NSVGpoint* p0, NSVGpoint* p1, float lineWidth, int ncap)
{
	int i, n;
	float w = lineWidth * 0.5f;
	float dlx0 = p0->dy, dly0 = -p0->dx;
	float dlx1 = p1->dy, dly1 = -p1->dx;
	float a0 = atan2f(dly0, dlx0);
	float a1 = atan2f(dly1, dlx1);
	float da = a1 - a0;
	float lx, ly, rx, ry;

	if (da < NSVG_PI) da += NSVG_PI*2;
	if (da > NSVG_PI) da -= NSVG_PI*2;

	n = (int)ceilf((nsvg__absf(da) / NSVG_PI) * (float)ncap);
	if (n < 2) n = 2;
	if (n > ncap) n = ncap;

	lx = left->x;
	ly = left->y;
	rx = right->x;
	ry = right->y;

	for (i = 0; i < n; i++) {
		float u = (float)i/(float)(n-1);
		float a = a0 + u*da;
		float ax = cosf(a) * w, ay = sinf(a) * w;
		float lx1 = p1->x - ax, ly1 = p1->y - ay;
		float rx1 = p1->x + ax, ry1 = p1->y + ay;

		nsvg__addEdge(r, lx1, ly1, lx, ly);
		nsvg__addEdge(r, rx, ry, rx1, ry1);

		lx = lx1; ly = ly1;
		rx = rx1; ry = ry1;
	}

	left->x = lx; left->y = ly;
	right->x = rx; right->y = ry;
}

static void nsvg__straightJoin(NSVGrasterizer* r, NSVGpoint* left, NSVGpoint* right, NSVGpoint* p1, float lineWidth)
{
	float w = lineWidth * 0.5f;
	float lx = p1->x - (p1->dmx * w), ly = p1->y - (p1->dmy * w);
	float rx = p1->x + (p1->dmx * w), ry = p1->y + (p1->dmy * w);

	nsvg__addEdge(r, lx, ly, left->x, left->y);
	nsvg__addEdge(r, right->x, right->y, rx, ry);

	left->x = lx; left->y = ly;
	right->x = rx; right->y = ry;
}

static int nsvg__curveDivs(float r, float arc, float tol)
{
	float da = acosf(r / (r + tol)) * 2.0f;
	int divs = (int)ceilf(arc / da);
	if (divs < 2) divs = 2;
	return divs;
}

static void nsvg__expandStroke(NSVGrasterizer* r, NSVGpoint* points, int npoints, int closed, int lineJoin, int lineCap, float lineWidth)
{
	int ncap = nsvg__curveDivs(lineWidth*0.5f, NSVG_PI, r->tessTol);	// Calculate divisions per half circle.
	NSVGpoint left = {0,0,0,0,0,0,0,0}, right = {0,0,0,0,0,0,0,0}, firstLeft = {0,0,0,0,0,0,0,0}, firstRight = {0,0,0,0,0,0,0,0};
	NSVGpoint* p0, *p1;
	int j, s, e;

	// Build stroke edges
	if (closed) {
		// Looping
		p0 = &points[npoints-1];
		p1 = &points[0];
		s = 0;
		e = npoints;
	} else {
		// Add cap
		p0 = &points[0];
		p1 = &points[1];
		s = 1;
		e = npoints-1;
	}

	if (closed) {
		nsvg__initClosed(&left, &right, p0, p1, lineWidth);
		firstLeft = left;
		firstRight = right;
	} else {
		// Add cap
		float dx = p1->x - p0->x;
		float dy = p1->y - p0->y;
		nsvg__normalize(&dx, &dy);
		if (lineCap == NSVG_CAP_BUTT)
			nsvg__buttCap(r, &left, &right, p0, dx, dy, lineWidth, 0);
		else if (lineCap == NSVG_CAP_SQUARE)
			nsvg__squareCap(r, &left, &right, p0, dx, dy, lineWidth, 0);
		else if (lineCap == NSVG_CAP_ROUND)
			nsvg__roundCap(r, &left, &right, p0, dx, dy, lineWidth, ncap, 0);
	}

	for (j = s; j < e; ++j) {
		if (p1->flags & NSVG_PT_CORNER) {
			if (lineJoin == NSVG_JOIN_ROUND)
				nsvg__roundJoin(r, &left, &right, p0, p1, lineWidth, ncap);
			else if (lineJoin == NSVG_JOIN_BEVEL || (p1->flags & NSVG_PT_BEVEL))
				nsvg__bevelJoin(r, &left, &right, p0, p1, lineWidth);
			else
				nsvg__miterJoin(r, &left, &right, p0, p1, lineWidth);
		} else {
			nsvg__straightJoin(r, &left, &right, p1, lineWidth);
		}
		p0 = p1++;
	}

	if (closed) {
		// Loop it
		nsvg__addEdge(r, firstLeft.x, firstLeft.y, left.x, left.y);
		nsvg__addEdge(r, right.x, right.y, firstRight.x, firstRight.y);
	} else {
		// Add cap
		float dx = p1->x - p0->x;
		float dy = p1->y - p0->y;
		nsvg__normalize(&dx, &dy);
		if (lineCap == NSVG_CAP_BUTT)
			nsvg__buttCap(r, &right, &left, p1, -dx, -dy, lineWidth, 1);
		else if (lineCap == NSVG_CAP_SQUARE)
			nsvg__squareCap(r, &right, &left, p1, -dx, -dy, lineWidth, 1);
		else if (lineCap == NSVG_CAP_ROUND)
			nsvg__roundCap(r, &right, &left, p1, -dx, -dy, lineWidth, ncap, 1);
	}
}

static void nsvg__prepareStroke(NSVGrasterizer* r, float miterLimit, int lineJoin)
{
	int i, j;
	NSVGpoint* p0, *p1;

	p0 = &r->points[r->npoints-1];
	p1 = &r->points[0];
	for (i = 0; i < r->npoints; i++) {
		// Calculate segment direction and length
		p0->dx = p1->x - p0->x;
		p0->dy = p1->y - p0->y;
		p0->len = nsvg__normalize(&p0->dx, &p0->dy);
		// Advance
		p0 = p1++;
	}

	// calculate joins
	p0 = &r->points[r->npoints-1];
	p1 = &r->points[0];
	for (j = 0; j < r->npoints; j++) {
		float dlx0, dly0, dlx1, dly1, dmr2, cross;
		dlx0 = p0->dy;
		dly0 = -p0->dx;
		dlx1 = p1->dy;
		dly1 = -p1->dx;
		// Calculate extrusions
		p1->dmx = (dlx0 + dlx1) * 0.5f;
		p1->dmy = (dly0 + dly1) * 0.5f;
		dmr2 = p1->dmx*p1->dmx + p1->dmy*p1->dmy;
		if (dmr2 > 0.000001f) {
			float s2 = 1.0f / dmr2;
			if (s2 > 600.0f) {
				s2 = 600.0f;
			}
			p1->dmx *= s2;
			p1->dmy *= s2;
		}

		// Clear flags, but keep the corner.
		p1->flags = (p1->flags & NSVG_PT_CORNER) ? NSVG_PT_CORNER : 0;

		// Keep track of left turns.
		cross = p1->dx * p0->dy - p0->dx * p1->dy;
		if (cross > 0.0f)
			p1->flags |= NSVG_PT_LEFT;

		// Check to see if the corner needs to be beveled.
		if (p1->flags & NSVG_PT_CORNER) {
			if ((dmr2 * miterLimit*miterLimit) < 1.0f || lineJoin == NSVG_JOIN_BEVEL || lineJoin == NSVG_JOIN_ROUND) {
				p1->flags |= NSVG_PT_BEVEL;
			}
		}

		p0 = p1++;
	}
}

static void nsvg__flattenShapeStroke(NSVGrasterizer* r, NSVGshape* shape, float scale)
{
	int i, j, closed;
	NSVGpath* path;
	NSVGpoint* p0, *p1;
	float miterLimit = shape->miterLimit;
	int lineJoin = shape->strokeLineJoin;
	int lineCap = shape->strokeLineCap;
	float lineWidth = shape->strokeWidth * scale;

	for (path = shape->paths; path != NULL; path = path->next) {
		// Flatten path
		r->npoints = 0;
		nsvg__addPathPoint(r, path->pts[0]*scale, path->pts[1]*scale, NSVG_PT_CORNER);
		for (i = 0; i < path->npts-1; i += 3) {
			float* p = &path->pts[i*2];
			nsvg__flattenCubicBez(r, p[0]*scale,p[1]*scale, p[2]*scale,p[3]*scale, p[4]*scale,p[5]*scale, p[6]*scale,p[7]*scale, 0, NSVG_PT_CORNER);
		}
		if (r->npoints < 2)
			continue;

		closed = path->closed;

		// If the first and last points are the same, remove the last, mark as closed path.
		p0 = &r->points[r->npoints-1];
		p1 = &r->points[0];
		if (nsvg__ptEquals(p0->x,p0->y, p1->x,p1->y, r->distTol)) {
			r->npoints--;
			p0 = &r->points[r->npoints-1];
			closed = 1;
		}

		if (shape->strokeDashCount > 0) {
			int idash = 0, dashState = 1;
			float totalDist = 0, dashLen, allDashLen, dashOffset;
			NSVGpoint cur;

			if (closed)
				nsvg__appendPathPoint(r, r->points[0]);

			// Duplicate points -> points2.
			nsvg__duplicatePoints(r);

			r->npoints = 0;
 			cur = r->points2[0];
			nsvg__appendPathPoint(r, cur);

			// Figure out dash offset.
			allDashLen = 0;
			for (j = 0; j < shape->strokeDashCount; j++)
				allDashLen += shape->strokeDashArray[j];
			if (shape->strokeDashCount & 1)
				allDashLen *= 2.0f;
			// Find location inside pattern
			dashOffset = fmodf(shape->strokeDashOffset, allDashLen);
			if (dashOffset < 0.0f)
				dashOffset += allDashLen;

			while (dashOffset > shape->strokeDashArray[idash]) {
				dashOffset -= shape->strokeDashArray[idash];
				idash = (idash + 1) % shape->strokeDashCount;
			}
			dashLen = (shape->strokeDashArray[idash] - dashOffset) * scale;

			for (j = 1; j < r->npoints2; ) {
				float dx = r->points2[j].x - cur.x;
				float dy = r->points2[j].y - cur.y;
				float dist = sqrtf(dx*dx + dy*dy);

				if ((totalDist + dist) > dashLen) {
					// Calculate intermediate point
					float d = (dashLen - totalDist) / dist;
					float x = cur.x + dx * d;
					float y = cur.y + dy * d;
					nsvg__addPathPoint(r, x, y, NSVG_PT_CORNER);

					// Stroke
					if (r->npoints > 1 && dashState) {
						nsvg__prepareStroke(r, miterLimit, lineJoin);
						nsvg__expandStroke(r, r->points, r->npoints, 0, lineJoin, lineCap, lineWidth);
					}
					// Advance dash pattern
					dashState = !dashState;
					idash = (idash+1) % shape->strokeDashCount;
					dashLen = shape->strokeDashArray[idash] * scale;
					// Restart
					cur.x = x;
					cur.y = y;
					cur.flags = NSVG_PT_CORNER;
					totalDist = 0.0f;
					r->npoints = 0;
					nsvg__appendPathPoint(r, cur);
				} else {
					totalDist += dist;
					cur = r->points2[j];
					nsvg__appendPathPoint(r, cur);
					j++;
				}
			}
			// Stroke any leftover path
			if (r->npoints > 1 && dashState)
				nsvg__expandStroke(r, r->points, r->npoints, 0, lineJoin, lineCap, lineWidth);
		} else {
			nsvg__prepareStroke(r, miterLimit, lineJoin);
			nsvg__expandStroke(r, r->points, r->npoints, closed, lineJoin, lineCap, lineWidth);
		}
	}
}

static int nsvg__cmpEdge(const void *p, const void *q)
{
	const NSVGedge* a = (const NSVGedge*)p;
	const NSVGedge* b = (const NSVGedge*)q;

	if (a->y0 < b->y0) return -1;
	if (a->y0 > b->y0) return  1;
	return 0;
}


static NSVGactiveEdge* nsvg__addActive(NSVGrasterizer* r, NSVGedge* e, float startPoint)
{
	 NSVGactiveEdge* z;
	float dxdy;

	if (r->freelist != NULL) {
		// Restore from freelist.
		z = r->freelist;
		r->freelist = z->next;
	} else {
		// Alloc new edge.
		z = (NSVGactiveEdge*)nsvg__alloc(r, sizeof(NSVGactiveEdge));
		if (z == NULL) return NULL;
	}

	dxdy = (e->x1 - e->x0) / (e->y1 - e->y0);
//	STBTT_assert(e->y0 <= start_point);
	// round dx down to avoid going too far
	if (dxdy < 0)
		z->dx = (int)(-floorf(NSVG__FIX * -dxdy));
	else
		z->dx = (int)floorf(NSVG__FIX * dxdy);
	z->x = (int)floorf(NSVG__FIX * (e->x0 + dxdy * (startPoint - e->y0)));
//	z->x -= off_x * FIX;
	z->ey = e->y1;
	z->next = 0;
	z->dir = e->dir;

	return z;
}

static void nsvg__freeActive(NSVGrasterizer* r, NSVGactiveEdge* z)
{
	z->next = r->freelist;
	r->freelist = z;
}

static void nsvg__fillScanline(unsigned char* scanline, int len, int x0, int x1, int maxWeight, int* xmin, int* xmax)
{
	int i = x0 >> NSVG__FIXSHIFT;
	int j = x1 >> NSVG__FIXSHIFT;
	if (i < *xmin) *xmin = i;
	if (j > *xmax) *xmax = j;
	if (i < len && j >= 0) {
		if (i == j) {
			// x0,x1 are the same pixel, so compute combined coverage
			scanline[i] = (unsigned char)(scanline[i] + ((x1 - x0) * maxWeight >> NSVG__FIXSHIFT));
		} else {
			if (i >= 0) // add antialiasing for x0
				scanline[i] = (unsigned char)(scanline[i] + (((NSVG__FIX - (x0 & NSVG__FIXMASK)) * maxWeight) >> NSVG__FIXSHIFT));
			else
				i = -1; // clip

			if (j < len) // add antialiasing for x1
				scanline[j] = (unsigned char)(scanline[j] + (((x1 & NSVG__FIXMASK) * maxWeight) >> NSVG__FIXSHIFT));
			else
				j = len; // clip

			for (++i; i < j; ++i) // fill pixels between x0 and x1
				scanline[i] = (unsigned char)(scanline[i] + maxWeight);
		}
	}
}

// note: this routine clips fills that extend off the edges... ideally this
// wouldn't happen, but it could happen if the truetype glyph bounding boxes
// are wrong, or if the user supplies a too-small bitmap
static void nsvg__fillActiveEdges(unsigned char* scanline, int len, NSVGactiveEdge* e, int maxWeight, int* xmin, int* xmax, char fillRule)
{
	// non-zero winding fill
	int x0 = 0, w = 0;

	if (fillRule == NSVG_FILLRULE_NONZERO) {
		// Non-zero
		while (e != NULL) {
			if (w == 0) {
				// if we're currently at zero, we need to record the edge start point
				x0 = e->x; w += e->dir;
			} else {
				int x1 = e->x; w += e->dir;
				// if we went to zero, we need to draw
				if (w == 0)
					nsvg__fillScanline(scanline, len, x0, x1, maxWeight, xmin, xmax);
			}
			e = e->next;
		}
	} else if (fillRule == NSVG_FILLRULE_EVENODD) {
		// Even-odd
		while (e != NULL) {
			if (w == 0) {
				// if we're currently at zero, we need to record the edge start point
				x0 = e->x; w = 1;
			} else {
				int x1 = e->x; w = 0;
				nsvg__fillScanline(scanline, len, x0, x1, maxWeight, xmin, xmax);
			}
			e = e->next;
		}
	}
}

static float nsvg__clampf(float a, float mn, float mx) { return a < mn ? mn : (a > mx ? mx : a); }

static unsigned int nsvg__RGBA(unsigned char r, unsigned char g, unsigned char b, unsigned char a)
{
	return (r) | (g << 8) | (b << 16) | (a << 24);
}

static unsigned int nsvg__lerpRGBA(unsigned int c0, unsigned int c1, float u)
{
	int iu = (int)(nsvg__clampf(u, 0.0f, 1.0f) * 256.0f);
	int r = (((c0) & 0xff)*(256-iu) + (((c1) & 0xff)*iu)) >> 8;
	int g = (((c0>>8) & 0xff)*(256-iu) + (((c1>>8) & 0xff)*iu)) >> 8;
	int b = (((c0>>16) & 0xff)*(256-iu) + (((c1>>16) & 0xff)*iu)) >> 8;
	int a = (((c0>>24) & 0xff)*(256-iu) + (((c1>>24) & 0xff)*iu)) >> 8;
	return nsvg__RGBA((unsigned char)r, (unsigned char)g, (unsigned char)b, (unsigned char)a);
}

static unsigned int nsvg__applyOpacity(unsigned int c, float u)
{
	int iu = (int)(nsvg__clampf(u, 0.0f, 1.0f) * 256.0f);
	int r = (c) & 0xff;
	int g = (c>>8) & 0xff;
	int b = (c>>16) & 0xff;
	int a = (((c>>24) & 0xff)*iu) >> 8;
	return nsvg__RGBA((unsigned char)r, (unsigned char)g, (unsigned char)b, (unsigned char)a);
}

static inline int nsvg__div255(int x)
{
    return ((x+1) * 257) >> 16;
}

static void nsvg__scanlineSolid(unsigned char* dst, int count, unsigned char* cover, int x, int y,
								float tx, float ty, float scale, NSVGcachedPaint* cache)
{

	if (cache->type == NSVG_PAINT_COLOR) {
		int i, cr, cg, cb, ca;
		cr = cache->colors[0] & 0xff;
		cg = (cache->colors[0] >> 8) & 0xff;
		cb = (cache->colors[0] >> 16) & 0xff;
		ca = (cache->colors[0] >> 24) & 0xff;

		for (i = 0; i < count; i++) {
			int r,g,b;
			int a = nsvg__div255((int)cover[0] * ca);
			int ia = 255 - a;
			// Premultiply
			r = nsvg__div255(cr * a);
			g = nsvg__div255(cg * a);
			b = nsvg__div255(cb * a);

			// Blend over
			r += nsvg__div255(ia * (int)dst[0]);
			g += nsvg__div255(ia * (int)dst[1]);
			b += nsvg__div255(ia * (int)dst[2]);
			a += nsvg__div255(ia * (int)dst[3]);

			dst[0] = (unsigned char)r;
			dst[1] = (unsigned char)g;
			dst[2] = (unsigned char)b;
			dst[3] = (unsigned char)a;

			cover++;
			dst += 4;
		}
	} else if (cache->type == NSVG_PAINT_LINEAR_GRADIENT) {
		// TODO: spread modes.
		// TODO: plenty of opportunities to optimize.
		float fx, fy, dx, gy;
		float* t = cache->xform;
		int i, cr, cg, cb, ca;
		unsigned int c;

		fx = ((float)x - tx) / scale;
		fy = ((float)y - ty) / scale;
		dx = 1.0f / scale;

		for (i = 0; i < count; i++) {
			int r,g,b,a,ia;
			gy = fx*t[1] + fy*t[3] + t[5];
			c = cache->colors[(int)nsvg__clampf(gy*255.0f, 0, 255.0f)];
			cr = (c) & 0xff;
			cg = (c >> 8) & 0xff;
			cb = (c >> 16) & 0xff;
			ca = (c >> 24) & 0xff;

			a = nsvg__div255((int)cover[0] * ca);
			ia = 255 - a;

			// Premultiply
			r = nsvg__div255(cr * a);
			g = nsvg__div255(cg * a);
			b = nsvg__div255(cb * a);

			// Blend over
			r += nsvg__div255(ia * (int)dst[0]);
			g += nsvg__div255(ia * (int)dst[1]);
			b += nsvg__div255(ia * (int)dst[2]);
			a += nsvg__div255(ia * (int)dst[3]);

			dst[0] = (unsigned char)r;
			dst[1] = (unsigned char)g;
			dst[2] = (unsigned char)b;
			dst[3] = (unsigned char)a;

			cover++;
			dst += 4;
			fx += dx;
		}
	} else if (cache->type == NSVG_PAINT_RADIAL_GRADIENT) {
		// TODO: spread modes.
		// TODO: plenty of opportunities to optimize.
		// TODO: focus (fx,fy)
		float fx, fy, dx, gx, gy, gd;
		float* t = cache->xform;
		int i, cr, cg, cb, ca;
		unsigned int c;

		fx = ((float)x - tx) / scale;
		fy = ((float)y - ty) / scale;
		dx = 1.0f / scale;

		for (i = 0; i < count; i++) {
			int r,g,b,a,ia;
			gx = fx*t[0] + fy*t[2] + t[4];
			gy = fx*t[1] + fy*t[3] + t[5];
			gd = sqrtf(gx*gx + gy*gy);
			c = cache->colors[(int)nsvg__clampf(gd*255.0f, 0, 255.0f)];
			cr = (c) & 0xff;
			cg = (c >> 8) & 0xff;
			cb = (c >> 16) & 0xff;
			ca = (c >> 24) & 0xff;

			a = nsvg__div255((int)cover[0] * ca);
			ia = 255 - a;

			// Premultiply
			r = nsvg__div255(cr * a);
			g = nsvg__div255(cg * a);
			b = nsvg__div255(cb * a);

			// Blend over
			r += nsvg__div255(ia * (int)dst[0]);
			g += nsvg__div255(ia * (int)dst[1]);
			b += nsvg__div255(ia * (int)dst[2]);
			a += nsvg__div255(ia * (int)dst[3]);

			dst[0] = (unsigned char)r;
			dst[1] = (unsigned char)g;
			dst[2] = (unsigned char)b;
			dst[3] = (unsigned char)a;

			cover++;
			dst += 4;
			fx += dx;
		}
	}
}

static void nsvg__rasterizeSortedEdges(NSVGrasterizer *r, float tx, float ty, float scale, NSVGcachedPaint* cache, char fillRule)
{
	NSVGactiveEdge *active = NULL;
	int y, s;
	int e = 0;
	int maxWeight = (255 / NSVG__SUBSAMPLES);  // weight per vertical scanline
	int xmin, xmax;

	for (y = 0; y < r->height; y++) {
		memset(r->scanline, 0, r->width);
		xmin = r->width;
		xmax = 0;
		for (s = 0; s < NSVG__SUBSAMPLES; ++s) {
			// find center of pixel for this scanline
			float scany = (float)(y*NSVG__SUBSAMPLES + s) + 0.5f;
			NSVGactiveEdge **step = &active;

			// update all active edges;
			// remove all active edges that terminate before the center of this scanline
			while (*step) {
				NSVGactiveEdge *z = *step;
				if (z->ey <= scany) {
					*step = z->next; // delete from list
//					NSVG__assert(z->valid);
					nsvg__freeActive(r, z);
				} else {
					z->x += z->dx; // advance to position for current scanline
					step = &((*step)->next); // advance through list
				}
			}

			// resort the list if needed
			for (;;) {
				int changed = 0;
				step = &active;
				while (*step && (*step)->next) {
					if ((*step)->x > (*step)->next->x) {
						NSVGactiveEdge* t = *step;
						NSVGactiveEdge* q = t->next;
						t->next = q->next;
						q->next = t;
						*step = q;
						changed = 1;
					}
					step = &(*step)->next;
				}
				if (!changed) break;
			}

			// insert all edges that start before the center of this scanline -- omit ones that also end on this scanline
			while (e < r->nedges && r->edges[e].y0 <= scany) {
				if (r->edges[e].y1 > scany) {
					NSVGactiveEdge* z = nsvg__addActive(r, &r->edges[e], scany);
					if (z == NULL) break;
					// find insertion point
					if (active == NULL) {
						active = z;
					} else if (z->x < active->x) {
						// insert at front
						z->next = active;
						active = z;
					} else {
						// find thing to insert AFTER
						NSVGactiveEdge* p = active;
						while (p->next && p->next->x < z->x)
							p = p->next;
						// at this point, p->next->x is NOT < z->x
						z->next = p->next;
						p->next = z;
					}
				}
				e++;
			}

			// now process all active edges in non-zero fashion
			if (active != NULL)
				nsvg__fillActiveEdges(r->scanline, r->width, active, maxWeight, &xmin, &xmax, fillRule);
		}
		// Blit
		if (xmin < 0) xmin = 0;
		if (xmax > r->width-1) xmax = r->width-1;
		if (xmin <= xmax) {
			nsvg__scanlineSolid(&r->bitmap[y * r->stride] + xmin*4, xmax-xmin+1, &r->scanline[xmin], xmin, y, tx,ty, scale, cache);
		}
	}

}

static void nsvg__unpremultiplyAlpha(unsigned char* image, int w, int h, int stride)
{
	int x,y;

	// Unpremultiply
	for (y = 0; y < h; y++) {
		unsigned char *row = &image[y*stride];
		for (x = 0; x < w; x++) {
			int r = row[0], g = row[1], b = row[2], a = row[3];
			if (a != 0) {
				row[0] = (unsigned char)(r*255/a);
				row[1] = (unsigned char)(g*255/a);
				row[2] = (unsigned char)(b*255/a);
			}
			row += 4;
		}
	}

	// Defringe
	for (y = 0; y < h; y++) {
		unsigned char *row = &image[y*stride];
		for (x = 0; x < w; x++) {
			int r = 0, g = 0, b = 0, a = row[3], n = 0;
			if (a == 0) {
				if (x-1 > 0 && row[-1] != 0) {
					r += row[-4];
					g += row[-3];
					b += row[-2];
					n++;
				}
				if (x+1 < w && row[7] != 0) {
					r += row[4];
					g += row[5];
					b += row[6];
					n++;
				}
				if (y-1 > 0 && row[-stride+3] != 0) {
					r += row[-stride];
					g += row[-stride+1];
					b += row[-stride+2];
					n++;
				}
				if (y+1 < h && row[stride+3] != 0) {
					r += row[stride];
					g += row[stride+1];
					b += row[stride+2];
					n++;
				}
				if (n > 0) {
					row[0] = (unsigned char)(r/n);
					row[1] = (unsigned char)(g/n);
					row[2] = (unsigned char)(b/n);
				}
			}
			row += 4;
		}
	}
}


static void nsvg__initPaint(NSVGcachedPaint* cache, NSVGpaint* paint, float opacity)
{
	int i, j;
	NSVGgradient* grad;

	cache->type = paint->type;

	if (paint->type == NSVG_PAINT_COLOR) {
		cache->colors[0] = nsvg__applyOpacity(paint->color, opacity);
		return;
	}

	grad = paint->gradient;

	cache->spread = grad->spread;
	memcpy(cache->xform, grad->xform, sizeof(float)*6);

	if (grad->nstops == 0) {
		for (i = 0; i < 256; i++)
			cache->colors[i] = 0;
	} if (grad->nstops == 1) {
		for (i = 0; i < 256; i++)
			cache->colors[i] = nsvg__applyOpacity(grad->stops[i].color, opacity);
	} else {
		unsigned int ca, cb = 0;
		float ua, ub, du, u;
		int ia, ib, count;

		ca = nsvg__applyOpacity(grad->stops[0].color, opacity);
		ua = nsvg__clampf(grad->stops[0].offset, 0, 1);
		ub = nsvg__clampf(grad->stops[grad->nstops-1].offset, ua, 1);
		ia = (int)(ua * 255.0f);
		ib = (int)(ub * 255.0f);
		for (i = 0; i < ia; i++) {
			cache->colors[i] = ca;
		}

		for (i = 0; i < grad->nstops-1; i++) {
			ca = nsvg__applyOpacity(grad->stops[i].color, opacity);
			cb = nsvg__applyOpacity(grad->stops[i+1].color, opacity);
			ua = nsvg__clampf(grad->stops[i].offset, 0, 1);
			ub = nsvg__clampf(grad->stops[i+1].offset, 0, 1);
			ia = (int)(ua * 255.0f);
			ib = (int)(ub * 255.0f);
			count = ib - ia;
			if (count <= 0) continue;
			u = 0;
			du = 1.0f / (float)count;
			for (j = 0; j < count; j++) {
				cache->colors[ia+j] = nsvg__lerpRGBA(ca,cb,u);
				u += du;
			}
		}

		for (i = ib; i < 256; i++)
			cache->colors[i] = cb;
	}

}

/*
static void dumpEdges(NSVGrasterizer* r, const char* name)
{
	float xmin = 0, xmax = 0, ymin = 0, ymax = 0;
	NSVGedge *e = NULL;
	int i;
	if (r->nedges == 0) return;
	FILE* fp = fopen(name, "w");
	if (fp == NULL) return;

	xmin = xmax = r->edges[0].x0;
	ymin = ymax = r->edges[0].y0;
	for (i = 0; i < r->nedges; i++) {
		e = &r->edges[i];
		xmin = nsvg__minf(xmin, e->x0);
		xmin = nsvg__minf(xmin, e->x1);
		xmax = nsvg__maxf(xmax, e->x0);
		xmax = nsvg__maxf(xmax, e->x1);
		ymin = nsvg__minf(ymin, e->y0);
		ymin = nsvg__minf(ymin, e->y1);
		ymax = nsvg__maxf(ymax, e->y0);
		ymax = nsvg__maxf(ymax, e->y1);
	}

	fprintf(fp, "<svg viewBox=\"%f %f %f %f\" xmlns=\"http://www.w3.org/2000/svg\">", xmin, ymin, (xmax - xmin), (ymax - ymin));

	for (i = 0; i < r->nedges; i++) {
		e = &r->edges[i];
		fprintf(fp ,"<line x1=\"%f\" y1=\"%f\" x2=\"%f\" y2=\"%f\" style=\"stroke:#000;\" />", e->x0,e->y0, e->x1,e->y1);
	}

	for (i = 0; i < r->npoints; i++) {
		if (i+1 < r->npoints)
			fprintf(fp ,"<line x1=\"%f\" y1=\"%f\" x2=\"%f\" y2=\"%f\" style=\"stroke:#f00;\" />", r->points[i].x, r->points[i].y, r->points[i+1].x, r->points[i+1].y);
		fprintf(fp ,"<circle cx=\"%f\" cy=\"%f\" r=\"1\" style=\"fill:%s;\" />", r->points[i].x, r->points[i].y, r->points[i].flags == 0 ? "#f00" : "#0f0");
	}

	fprintf(fp, "</svg>");
	fclose(fp);
}
*/

NANOSVG_SCOPE
void nsvgRasterize(NSVGrasterizer* r,
				   NSVGimage* image, float tx, float ty, float scale,
				   unsigned char* dst, int w, int h, int stride)
{
	NSVGshape *shape = NULL;
	NSVGedge *e = NULL;
	NSVGcachedPaint cache;
	int i;

	r->bitmap = dst;
	r->width = w;
	r->height = h;
	r->stride = stride;

	if (w > r->cscanline) {
		r->cscanline = w;
		r->scanline = (unsigned char*)NANOSVG_realloc(r->scanline, w);
		if (r->scanline == NULL) return;
	}

	for (i = 0; i < h; i++)
		memset(&dst[i*stride], 0, w*4);

	for (shape = image->shapes; shape != NULL; shape = shape->next) {
		if (!(shape->flags & NSVG_FLAGS_VISIBLE))
			continue;

		if (shape->fill.type != NSVG_PAINT_NONE) {
			nsvg__resetPool(r);
			r->freelist = NULL;
			r->nedges = 0;

			nsvg__flattenShape(r, shape, scale);

			// Scale and translate edges
			for (i = 0; i < r->nedges; i++) {
				e = &r->edges[i];
				e->x0 = tx + e->x0;
				e->y0 = (ty + e->y0) * NSVG__SUBSAMPLES;
				e->x1 = tx + e->x1;
				e->y1 = (ty + e->y1) * NSVG__SUBSAMPLES;
			}

			// Rasterize edges
			qsort(r->edges, r->nedges, sizeof(NSVGedge), nsvg__cmpEdge);

			// now, traverse the scanlines and find the intersections on each scanline, use non-zero rule
			nsvg__initPaint(&cache, &shape->fill, shape->opacity);

			nsvg__rasterizeSortedEdges(r, tx,ty,scale, &cache, shape->fillRule);
		}
		if (shape->stroke.type != NSVG_PAINT_NONE && (shape->strokeWidth * scale) > 0.01f) {
			nsvg__resetPool(r);
			r->freelist = NULL;
			r->nedges = 0;

			nsvg__flattenShapeStroke(r, shape, scale);

//			dumpEdges(r, "edge.svg");

			// Scale and translate edges
			for (i = 0; i < r->nedges; i++) {
				e = &r->edges[i];
				e->x0 = tx + e->x0;
				e->y0 = (ty + e->y0) * NSVG__SUBSAMPLES;
				e->x1 = tx + e->x1;
				e->y1 = (ty + e->y1) * NSVG__SUBSAMPLES;
			}

			// Rasterize edges
			qsort(r->edges, r->nedges, sizeof(NSVGedge), nsvg__cmpEdge);

			// now, traverse the scanlines and find the intersections on each scanline, use non-zero rule
			nsvg__initPaint(&cache, &shape->stroke, shape->opacity);

			nsvg__rasterizeSortedEdges(r, tx,ty,scale, &cache, NSVG_FILLRULE_NONZERO);
		}
	}

	nsvg__unpremultiplyAlpha(dst, w, h, stride);

	r->bitmap = NULL;
	r->width = 0;
	r->height = 0;
	r->stride = 0;
}

#endif

Changes to generic/tk.h.

1031
1032
1033
1034
1035
1036
1037


1038
1039
1040
1041
1042
1043
1044
....
1114
1115
1116
1117
1118
1119
1120
1121


1122
1123
1124
1125
1126
1127
1128
		    int height);
typedef double	(Tk_ItemPointProc)(Tk_Canvas canvas, Tk_Item *itemPtr,
		    double *pointPtr);
typedef int	(Tk_ItemAreaProc)(Tk_Canvas canvas, Tk_Item *itemPtr,
		    double *rectPtr);
typedef int	(Tk_ItemPostscriptProc)(Tcl_Interp *interp, Tk_Canvas canvas,
		    Tk_Item *itemPtr, int prepass);


typedef void	(Tk_ItemScaleProc)(Tk_Canvas canvas, Tk_Item *itemPtr,
		    double originX, double originY, double scaleX,
		    double scaleY);
typedef void	(Tk_ItemTranslateProc)(Tk_Canvas canvas, Tk_Item *itemPtr,
		    double deltaX, double deltaY);
#ifdef USE_OLD_CANVAS
typedef int	(Tk_ItemIndexProc)(Tcl_Interp *interp, Tk_Canvas canvas,
................................................................................
    Tk_ItemInsertProc *insertProc;
				/* Procedure to insert something into an
				 * item. */
    Tk_ItemDCharsProc *dCharsProc;
				/* Procedure to delete characters from an
				 * item. */
    struct Tk_ItemType *nextPtr;/* Used to link types together into a list. */
    char *reserved1;		/* Reserved for future extension. */


    int reserved2;		/* Carefully compatible with */
    char *reserved3;		/* Jan Nijtmans dash patch */
    char *reserved4;
} Tk_ItemType;

/*
 * Flag (used in the alwaysRedraw field) to say whether an item supports






>
>







 







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>
>







1031
1032
1033
1034
1035
1036
1037
1038
1039
1040
1041
1042
1043
1044
1045
1046
....
1116
1117
1118
1119
1120
1121
1122
1123
1124
1125
1126
1127
1128
1129
1130
1131
1132
		    int height);
typedef double	(Tk_ItemPointProc)(Tk_Canvas canvas, Tk_Item *itemPtr,
		    double *pointPtr);
typedef int	(Tk_ItemAreaProc)(Tk_Canvas canvas, Tk_Item *itemPtr,
		    double *rectPtr);
typedef int	(Tk_ItemPostscriptProc)(Tcl_Interp *interp, Tk_Canvas canvas,
		    Tk_Item *itemPtr, int prepass);
typedef void	(Tk_ItemRotateProc)(Tk_Canvas canvas, Tk_Item *itemPtr,
		    double originX, double originY, double angleRadians);
typedef void	(Tk_ItemScaleProc)(Tk_Canvas canvas, Tk_Item *itemPtr,
		    double originX, double originY, double scaleX,
		    double scaleY);
typedef void	(Tk_ItemTranslateProc)(Tk_Canvas canvas, Tk_Item *itemPtr,
		    double deltaX, double deltaY);
#ifdef USE_OLD_CANVAS
typedef int	(Tk_ItemIndexProc)(Tcl_Interp *interp, Tk_Canvas canvas,
................................................................................
    Tk_ItemInsertProc *insertProc;
				/* Procedure to insert something into an
				 * item. */
    Tk_ItemDCharsProc *dCharsProc;
				/* Procedure to delete characters from an
				 * item. */
    struct Tk_ItemType *nextPtr;/* Used to link types together into a list. */
    Tk_ItemRotateProc *rotateProc;
				/* Procedure to rotate an item's coordinates
				 * about a point. */
    int reserved2;		/* Carefully compatible with */
    char *reserved3;		/* Jan Nijtmans dash patch */
    char *reserved4;
} Tk_ItemType;

/*
 * Flag (used in the alwaysRedraw field) to say whether an item supports

Changes to generic/tkButton.c.

1171
1172
1173
1174
1175
1176
1177
1178
1179
1180
1181
1182
1183
1184
1185
....
1612
1613
1614
1615
1616
1617
1618
1619
1620
1621
1622
1623
1624
1625
1626
1627
1628
1629
1630
1631
1632
1633
1634
1635
1636
1637
1638
1639




















1640
1641
1642
1643
1644
1645
1646
....
1707
1708
1709
1710
1711
1712
1713
1714
1715
1716
1717
1718
1719
1720
1721
1722
1723
1724
1725
1726
1727
1728
1729
1730
1731
1732
1733
1734
1735
1736
1737
1738
1739
1740
1741
1742
1743
1744



























1745
1746
1747
1748
1749
1750
1751
		/*
		 * If a radiobutton has the empty string as value it should be
		 * selected.
		 */

 		if ((butPtr->type == TYPE_RADIO_BUTTON) &&
			(*Tcl_GetString(butPtr->onValuePtr) == 0)) {
		    butPtr->flags |= SELECTED;
		}
	    }
	}

	/*
	 * Get the images for the widget, if there are any. Allocate the new
................................................................................
    const char *name2,		/* Second part of variable name. */
    int flags)			/* Information about what happened. */
{
    register TkButton *butPtr = clientData;
    const char *value;
    Tcl_Obj *valuePtr;

    /*
     * See ticket [5d991b82].
     */

    if (butPtr->selVarNamePtr == NULL) {
	if (!(flags & TCL_INTERP_DESTROYED)) {
	    Tcl_UntraceVar2(interp, name1, name2,
		    TCL_GLOBAL_ONLY|TCL_TRACE_WRITES|TCL_TRACE_UNSETS,
		    ButtonVarProc, clientData);
	}
	return NULL;
    }

    /*
     * If the variable is being unset, then just re-establish the trace unless
     * the whole interpreter is going away.
     */

    if (flags & TCL_TRACE_UNSETS) {
	butPtr->flags &= ~(SELECTED | TRISTATED);
	if ((flags & TCL_TRACE_DESTROYED) && !(flags & TCL_INTERP_DESTROYED)) {




















	    Tcl_TraceVar2(interp, Tcl_GetString(butPtr->selVarNamePtr),
		    NULL, TCL_GLOBAL_ONLY|TCL_TRACE_WRITES|TCL_TRACE_UNSETS,
		    ButtonVarProc, clientData);
	}
	goto redisplay;
    }

................................................................................
 */

	/* ARGSUSED */
static char *
ButtonTextVarProc(
    ClientData clientData,	/* Information about button. */
    Tcl_Interp *interp,		/* Interpreter containing variable. */
    const char *name1,		/* Name of variable. */
    const char *name2,		/* Second part of variable name. */
    int flags)			/* Information about what happened. */
{
    TkButton *butPtr = clientData;
    Tcl_Obj *valuePtr;

    if (butPtr->flags & BUTTON_DELETED) {
	return NULL;
    }

    /*
     * See ticket [5d991b82].
     */

    if (butPtr->textVarNamePtr == NULL) {
	if (!(flags & TCL_INTERP_DESTROYED)) {
	    Tcl_UntraceVar2(interp, name1, name2,
		    TCL_GLOBAL_ONLY|TCL_TRACE_WRITES|TCL_TRACE_UNSETS,
		    ButtonTextVarProc, clientData);
	}
 	return NULL;
     }

    /*
     * If the variable is unset, then immediately recreate it unless the whole
     * interpreter is going away.
     */

    if (flags & TCL_TRACE_UNSETS) {
	if ((flags & TCL_TRACE_DESTROYED) && !(flags & TCL_INTERP_DESTROYED)) {



























	    Tcl_ObjSetVar2(interp, butPtr->textVarNamePtr, NULL,
		    butPtr->textPtr, TCL_GLOBAL_ONLY);
	    Tcl_TraceVar2(interp, Tcl_GetString(butPtr->textVarNamePtr),
		    NULL, TCL_GLOBAL_ONLY|TCL_TRACE_WRITES|TCL_TRACE_UNSETS,
		    ButtonTextVarProc, clientData);
	}
	return NULL;






|







 







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1171
1172
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1176
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1178
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....
1612
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1614
1615
1616
1617
1618













1619
1620
1621
1622
1623
1624
1625
1626
1627
1628
1629
1630
1631
1632
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1637
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1644
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1649
1650
1651
1652
1653
....
1714
1715
1716
1717
1718
1719
1720
1721
1722
1723
1724
1725
1726
1727
1728
1729
1730
1731













1732
1733
1734
1735
1736
1737
1738
1739
1740
1741
1742
1743
1744
1745
1746
1747
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1753
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1758
1759
1760
1761
1762
1763
1764
1765
1766
1767
1768
1769
1770
1771
1772
		/*
		 * If a radiobutton has the empty string as value it should be
		 * selected.
		 */

 		if ((butPtr->type == TYPE_RADIO_BUTTON) &&
			(*Tcl_GetString(butPtr->onValuePtr) == '\0')) {
		    butPtr->flags |= SELECTED;
		}
	    }
	}

	/*
	 * Get the images for the widget, if there are any. Allocate the new
................................................................................
    const char *name2,		/* Second part of variable name. */
    int flags)			/* Information about what happened. */
{
    register TkButton *butPtr = clientData;
    const char *value;
    Tcl_Obj *valuePtr;














    /*
     * If the variable is being unset, then just re-establish the trace unless
     * the whole interpreter is going away.
     */

    if (flags & TCL_TRACE_UNSETS) {
	butPtr->flags &= ~(SELECTED | TRISTATED);
	if (!Tcl_InterpDeleted(interp)) {
	    ClientData probe = NULL;

	    do {
		probe = Tcl_VarTraceInfo(interp,
			Tcl_GetString(butPtr->selVarNamePtr),
			TCL_GLOBAL_ONLY|TCL_TRACE_WRITES|TCL_TRACE_UNSETS,
			ButtonVarProc, probe);
		if (probe == (ClientData)butPtr) {
		    break;
		}
	    } while (probe);
	    if (probe) {
		/*
		 * We were able to fetch the unset trace for our
		 * selVarNamePtr, which means it is not unset and not
		 * the cause of this unset trace. Instead some outdated
		 * former variable must be, and we should ignore it.
		 */
		goto redisplay;
	    }
	    Tcl_TraceVar2(interp, Tcl_GetString(butPtr->selVarNamePtr),
		    NULL, TCL_GLOBAL_ONLY|TCL_TRACE_WRITES|TCL_TRACE_UNSETS,
		    ButtonVarProc, clientData);
	}
	goto redisplay;
    }

................................................................................
 */

	/* ARGSUSED */
static char *
ButtonTextVarProc(
    ClientData clientData,	/* Information about button. */
    Tcl_Interp *interp,		/* Interpreter containing variable. */
    const char *name1,		/* Not used. */
    const char *name2,		/* Not used. */
    int flags)			/* Information about what happened. */
{
    TkButton *butPtr = clientData;
    Tcl_Obj *valuePtr;

    if (butPtr->flags & BUTTON_DELETED) {
	return NULL;
    }














    /*
     * If the variable is unset, then immediately recreate it unless the whole
     * interpreter is going away.
     */

    if (flags & TCL_TRACE_UNSETS) {
	if (!Tcl_InterpDeleted(interp) && butPtr->textVarNamePtr != NULL) {

	    /*
	     * An unset trace on some variable brought us here, but is it
	     * the variable we have stored in butPtr->textVarNamePtr ?
	     */

	    ClientData probe = NULL;

	    do {
		probe = Tcl_VarTraceInfo(interp,
			Tcl_GetString(butPtr->textVarNamePtr),
			TCL_GLOBAL_ONLY|TCL_TRACE_WRITES|TCL_TRACE_UNSETS,
			ButtonTextVarProc, probe);
		if (probe == (ClientData)butPtr) {
		    break;
		}
	    } while (probe);
	    if (probe) {
		/*
		 * We were able to fetch the unset trace for our
		 * textVarNamePtr, which means it is not unset and not
		 * the cause of this unset trace. Instead some outdated
		 * former textvariable must be, and we should ignore it.
		 */
		return NULL;
	    }

	    Tcl_ObjSetVar2(interp, butPtr->textVarNamePtr, NULL,
		    butPtr->textPtr, TCL_GLOBAL_ONLY);
	    Tcl_TraceVar2(interp, Tcl_GetString(butPtr->textVarNamePtr),
		    NULL, TCL_GLOBAL_ONLY|TCL_TRACE_WRITES|TCL_TRACE_UNSETS,
		    ButtonTextVarProc, clientData);
	}
	return NULL;

Changes to generic/tkCanvArc.c.

9
10
11
12
13
14
15


16
17
18
19
20
21
22
...
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
...
210
211
212
213
214
215
216


217
218
219
220
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223
...
237
238
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240
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243

244
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249
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251
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467
468
469
470
471
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475

476
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478

479
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481
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483
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485
...
585
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593
594
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...
600
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602
603
604
605
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610
611
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613







614
615
616
617






618
619
620
621
622
623
624
...
787
788
789
790
791
792
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795
796
797
798
799
800
801
....
1483
1484
1485
1486
1487
1488
1489






















































1490
1491
1492
1493
1494
1495
1496
 * See the file "license.terms" for information on usage and redistribution of
 * this file, and for a DISCLAIMER OF ALL WARRANTIES.
 */

#include "tkInt.h"
#include "tkCanvas.h"



/*
 * The structure below defines the record for each arc item.
 */

typedef enum {
    PIESLICE_STYLE, CHORD_STYLE, ARC_STYLE
} Style;
................................................................................
 * Prototypes for functions defined in this file:
 */

static void		ComputeArcBbox(Tk_Canvas canvas, ArcItem *arcPtr);
static int		ConfigureArc(Tcl_Interp *interp,
			    Tk_Canvas canvas, Tk_Item *itemPtr, int objc,
			    Tcl_Obj *const objv[], int flags);
static void		ComputeArcFromHeight(ArcItem *arcPtr);
static int		CreateArc(Tcl_Interp *interp,
			    Tk_Canvas canvas, struct Tk_Item *itemPtr,
			    int objc, Tcl_Obj *const objv[]);
static void		DeleteArc(Tk_Canvas canvas,
			    Tk_Item *itemPtr, Display *display);
static void		DisplayArc(Tk_Canvas canvas,
			    Tk_Item *itemPtr, Display *display, Drawable dst,
................................................................................
static void		ComputeArcOutline(Tk_Canvas canvas, ArcItem *arcPtr);
static int		HorizLineToArc(double x1, double x2,
			    double y, double rx, double ry,
			    double start, double extent);
static int		VertLineToArc(double x, double y1,
			    double y2, double rx, double ry,
			    double start, double extent);



/*
 * The structures below defines the arc item types by means of functions that
 * can be invoked by generic item code.
 */

Tk_ItemType tkArcType = {
................................................................................
    TranslateArc,		/* translateProc */
    NULL,			/* indexProc */
    NULL,			/* icursorProc */
    NULL,			/* selectionProc */
    NULL,			/* insertProc */
    NULL,			/* dTextProc */
    NULL,			/* nextPtr */

    NULL, 0, NULL, NULL
};
 
/*
 *--------------------------------------------------------------
 *
 * CreateArc --
 *
................................................................................
	    arcPtr->activeFillStipple != None) {
	itemPtr->redraw_flags |= TK_ITEM_STATE_DEPENDANT;
    } else {
	itemPtr->redraw_flags &= ~TK_ITEM_STATE_DEPENDANT;
    }

    /*
     * If either the height is provided then the start and extent will be
     * overridden.
     */
    if (arcPtr->height != 0) {

	ComputeArcFromHeight(arcPtr);
	ComputeArcBbox(canvas, arcPtr);
    }


    i = (int) (arcPtr->start/360.0);
    arcPtr->start -= i*360.0;
    if (arcPtr->start < 0) {
	arcPtr->start += 360.0;
    }
    i = (int) (arcPtr->extent/360.0);
................................................................................
    ComputeArcBbox(canvas, arcPtr);
    return TCL_OK;
}
 
/*
 *--------------------------------------------------------------
 *
 * ComputeArcFromHeight --
 *
 *	This function calculates the arc parameters given start-point,
 *	end-point and height (!= 0).
 *
 * Results:
 *	None.
 *
................................................................................
 * Side effects:
 *	The height parameter is set to 0 on exit.
 *
 *--------------------------------------------------------------
 */

static void
ComputeArcFromHeight(
    ArcItem* arcPtr)
{
    double chordLen, chordDir[2], chordCen[2], arcCen[2], d, radToDeg, radius;

    /*
     * The chord.







     */

    chordLen = hypot(arcPtr->endPoint[1] - arcPtr->startPoint[1],
	    arcPtr->startPoint[0] - arcPtr->endPoint[0]);






    chordDir[0] = (arcPtr->endPoint[0] - arcPtr->startPoint[0]) / chordLen;
    chordDir[1] = (arcPtr->endPoint[1] - arcPtr->startPoint[1]) / chordLen;
    chordCen[0] = (arcPtr->startPoint[0] + arcPtr->endPoint[0]) / 2;
    chordCen[1] = (arcPtr->startPoint[1] + arcPtr->endPoint[1]) / 2;

    /*
     * Calculate the radius (assumes height != 0).
................................................................................
	arcPtr->bbox[2] = arcPtr->bbox[0];
	arcPtr->bbox[0] = tmp;
    }

    ComputeArcOutline(canvas,arcPtr);

    /*
     * To compute the bounding box, start with the the bbox formed by the two
     * endpoints of the arc. Then add in the center of the arc's oval (if
     * relevant) and the 3-o'clock, 6-o'clock, 9-o'clock, and 12-o'clock
     * positions, if they are relevant.
     */

    arcPtr->header.x1 = arcPtr->header.x2 = (int) arcPtr->center1[0];
    arcPtr->header.y1 = arcPtr->header.y2 = (int) arcPtr->center1[1];
................................................................................
{
    ArcItem *arcPtr = (ArcItem *) itemPtr;

    arcPtr->bbox[0] = originX + scaleX*(arcPtr->bbox[0] - originX);
    arcPtr->bbox[1] = originY + scaleY*(arcPtr->bbox[1] - originY);
    arcPtr->bbox[2] = originX + scaleX*(arcPtr->bbox[2] - originX);
    arcPtr->bbox[3] = originY + scaleY*(arcPtr->bbox[3] - originY);






















































    ComputeArcBbox(canvas, arcPtr);
}
 
/*
 *--------------------------------------------------------------
 *
 * TranslateArc --






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 * See the file "license.terms" for information on usage and redistribution of
 * this file, and for a DISCLAIMER OF ALL WARRANTIES.
 */

#include "tkInt.h"
#include "tkCanvas.h"

#include "float.h"

/*
 * The structure below defines the record for each arc item.
 */

typedef enum {
    PIESLICE_STYLE, CHORD_STYLE, ARC_STYLE
} Style;
................................................................................
 * Prototypes for functions defined in this file:
 */

static void		ComputeArcBbox(Tk_Canvas canvas, ArcItem *arcPtr);
static int		ConfigureArc(Tcl_Interp *interp,
			    Tk_Canvas canvas, Tk_Item *itemPtr, int objc,
			    Tcl_Obj *const objv[], int flags);
static void		ComputeArcParametersFromHeight(ArcItem *arcPtr);
static int		CreateArc(Tcl_Interp *interp,
			    Tk_Canvas canvas, struct Tk_Item *itemPtr,
			    int objc, Tcl_Obj *const objv[]);
static void		DeleteArc(Tk_Canvas canvas,
			    Tk_Item *itemPtr, Display *display);
static void		DisplayArc(Tk_Canvas canvas,
			    Tk_Item *itemPtr, Display *display, Drawable dst,
................................................................................
static void		ComputeArcOutline(Tk_Canvas canvas, ArcItem *arcPtr);
static int		HorizLineToArc(double x1, double x2,
			    double y, double rx, double ry,
			    double start, double extent);
static int		VertLineToArc(double x, double y1,
			    double y2, double rx, double ry,
			    double start, double extent);
static void		RotateArc(Tk_Canvas canvas, Tk_Item *itemPtr,
			    double originX, double originY, double angleRad);

/*
 * The structures below defines the arc item types by means of functions that
 * can be invoked by generic item code.
 */

Tk_ItemType tkArcType = {
................................................................................
    TranslateArc,		/* translateProc */
    NULL,			/* indexProc */
    NULL,			/* icursorProc */
    NULL,			/* selectionProc */
    NULL,			/* insertProc */
    NULL,			/* dTextProc */
    NULL,			/* nextPtr */
    RotateArc,			/* rotateProc */
    0, NULL, NULL
};
 
/*
 *--------------------------------------------------------------
 *
 * CreateArc --
 *
................................................................................
	    arcPtr->activeFillStipple != None) {
	itemPtr->redraw_flags |= TK_ITEM_STATE_DEPENDANT;
    } else {
	itemPtr->redraw_flags &= ~TK_ITEM_STATE_DEPENDANT;
    }

    /*
     * Override the start and extent if the height is given.

     */


    ComputeArcParametersFromHeight(arcPtr);


    ComputeArcBbox(canvas, arcPtr);

    i = (int) (arcPtr->start/360.0);
    arcPtr->start -= i*360.0;
    if (arcPtr->start < 0) {
	arcPtr->start += 360.0;
    }
    i = (int) (arcPtr->extent/360.0);
................................................................................
    ComputeArcBbox(canvas, arcPtr);
    return TCL_OK;
}
 
/*
 *--------------------------------------------------------------
 *
 * ComputeArcParametersFromHeight --
 *
 *	This function calculates the arc parameters given start-point,
 *	end-point and height (!= 0).
 *
 * Results:
 *	None.
 *
................................................................................
 * Side effects:
 *	The height parameter is set to 0 on exit.
 *
 *--------------------------------------------------------------
 */

static void
ComputeArcParametersFromHeight(
    ArcItem* arcPtr)
{
    double chordLen, chordDir[2], chordCen[2], arcCen[2], d, radToDeg, radius;

    /*
     * Do nothing if no height has been specified.
     */

    if (arcPtr->height == 0)
        return;

    /*
     * Calculate the chord length, return early if it is too small.
     */

    chordLen = hypot(arcPtr->endPoint[1] - arcPtr->startPoint[1],
	    arcPtr->startPoint[0] - arcPtr->endPoint[0]);

    if (chordLen < DBL_EPSILON) {
        arcPtr->start = arcPtr->extent = arcPtr->height = 0;
        return;
    }

    chordDir[0] = (arcPtr->endPoint[0] - arcPtr->startPoint[0]) / chordLen;
    chordDir[1] = (arcPtr->endPoint[1] - arcPtr->startPoint[1]) / chordLen;
    chordCen[0] = (arcPtr->startPoint[0] + arcPtr->endPoint[0]) / 2;
    chordCen[1] = (arcPtr->startPoint[1] + arcPtr->endPoint[1]) / 2;

    /*
     * Calculate the radius (assumes height != 0).
................................................................................
	arcPtr->bbox[2] = arcPtr->bbox[0];
	arcPtr->bbox[0] = tmp;
    }

    ComputeArcOutline(canvas,arcPtr);

    /*
     * To compute the bounding box, start with the bbox formed by the two
     * endpoints of the arc. Then add in the center of the arc's oval (if
     * relevant) and the 3-o'clock, 6-o'clock, 9-o'clock, and 12-o'clock
     * positions, if they are relevant.
     */

    arcPtr->header.x1 = arcPtr->header.x2 = (int) arcPtr->center1[0];
    arcPtr->header.y1 = arcPtr->header.y2 = (int) arcPtr->center1[1];
................................................................................
{
    ArcItem *arcPtr = (ArcItem *) itemPtr;

    arcPtr->bbox[0] = originX + scaleX*(arcPtr->bbox[0] - originX);
    arcPtr->bbox[1] = originY + scaleY*(arcPtr->bbox[1] - originY);
    arcPtr->bbox[2] = originX + scaleX*(arcPtr->bbox[2] - originX);
    arcPtr->bbox[3] = originY + scaleY*(arcPtr->bbox[3] - originY);
    ComputeArcBbox(canvas, arcPtr);
}
 
/*
 *--------------------------------------------------------------
 *
 * RotateArc --
 *
 *	This function is called to rotate an arc by a given amount.
 *
 * Results:
 *	None.
 *
 * Side effects:
 *	The position of the arc is rotated by angleRad radians about (originX,
 *	originY), and the bounding box is updated in the generic part of the
 *	item structure.
 *
 *--------------------------------------------------------------
 */

static void
RotateArc(
    Tk_Canvas canvas,
    Tk_Item *itemPtr,
    double originX,
    double originY,
    double angleRad)
{
    ArcItem *arcPtr = (ArcItem *) itemPtr;
    double newX, newY, oldX, oldY;

    /*
     * Compute the centre of the box, then rotate that about the origin.
     */

    newX = oldX = (arcPtr->bbox[0] + arcPtr->bbox[2]) / 2.0;
    newY = oldY = (arcPtr->bbox[1] + arcPtr->bbox[3]) / 2.0;
    TkRotatePoint(originX, originY, sin(angleRad), cos(angleRad),
	    &newX, &newY);

    /*
     * Apply the translation to the box.
     */

    arcPtr->bbox[0] += newX - oldX;
    arcPtr->bbox[1] += newY - oldY;
    arcPtr->bbox[2] += newX - oldX;
    arcPtr->bbox[3] += newY - oldY;

    /*
     * TODO: update the arc endpoints?
     */

    ComputeArcBbox(canvas, arcPtr);
}
 
/*
 *--------------------------------------------------------------
 *
 * TranslateArc --

Changes to generic/tkCanvBmap.c.

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			    Tk_Canvas canvas, struct Tk_Item *itemPtr,
			    int objc, Tcl_Obj *const objv[]);
static void		DeleteBitmap(Tk_Canvas canvas,
			    Tk_Item *itemPtr, Display *display);
static void		DisplayBitmap(Tk_Canvas canvas,
			    Tk_Item *itemPtr, Display *display, Drawable dst,
			    int x, int y, int width, int height);


static void		ScaleBitmap(Tk_Canvas canvas,
			    Tk_Item *itemPtr, double originX, double originY,
			    double scaleX, double scaleY);
static void		TranslateBitmap(Tk_Canvas canvas, Tk_Item *itemPtr,
			    double deltaX, double deltaY);

/*
................................................................................
    TranslateBitmap,		/* translateProc */
    NULL,			/* indexProc */
    NULL,			/* icursorProc */
    NULL,			/* selectionProc */
    NULL,			/* insertProc */
    NULL,			/* dTextProc */
    NULL,			/* nextPtr */

    NULL, 0, NULL, NULL
};
 
/*
 *--------------------------------------------------------------
 *
 * TkcCreateBitmap --
 *
................................................................................
{
    BitmapItem *bmapPtr = (BitmapItem *) itemPtr;

    bmapPtr->x = originX + scaleX*(bmapPtr->x - originX);
    bmapPtr->y = originY + scaleY*(bmapPtr->y - originY);
    ComputeBitmapBbox(canvas, bmapPtr);
}

































 
/*
 *--------------------------------------------------------------
 *
 * TranslateBitmap --
 *
 *	This function is called to move an item by a given amount.






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			    Tk_Canvas canvas, struct Tk_Item *itemPtr,
			    int objc, Tcl_Obj *const objv[]);
static void		DeleteBitmap(Tk_Canvas canvas,
			    Tk_Item *itemPtr, Display *display);
static void		DisplayBitmap(Tk_Canvas canvas,
			    Tk_Item *itemPtr, Display *display, Drawable dst,
			    int x, int y, int width, int height);
static void		RotateBitmap(Tk_Canvas canvas, Tk_Item *itemPtr,
			    double originX, double originY, double angleRad);
static void		ScaleBitmap(Tk_Canvas canvas,
			    Tk_Item *itemPtr, double originX, double originY,
			    double scaleX, double scaleY);
static void		TranslateBitmap(Tk_Canvas canvas, Tk_Item *itemPtr,
			    double deltaX, double deltaY);

/*
................................................................................
    TranslateBitmap,		/* translateProc */
    NULL,			/* indexProc */
    NULL,			/* icursorProc */
    NULL,			/* selectionProc */
    NULL,			/* insertProc */
    NULL,			/* dTextProc */
    NULL,			/* nextPtr */
    RotateBitmap,		/* rotateProc */
    0, NULL, NULL
};
 
/*
 *--------------------------------------------------------------
 *
 * TkcCreateBitmap --
 *
................................................................................
{
    BitmapItem *bmapPtr = (BitmapItem *) itemPtr;

    bmapPtr->x = originX + scaleX*(bmapPtr->x - originX);
    bmapPtr->y = originY + scaleY*(bmapPtr->y - originY);
    ComputeBitmapBbox(canvas, bmapPtr);
}
 
/*
 *--------------------------------------------------------------
 *
 * RotateBitmap --
 *
 *	This function is called to rotate a bitmap's origin by a given amount.
 *
 * Results:
 *	None.
 *
 * Side effects:
 *	The position of the bitmap is rotated by angleRad radians about
 *	(originX, originY), and the bounding box is updated in the generic
 *	part of the item structure.
 *
 *--------------------------------------------------------------
 */

static void
RotateBitmap(
    Tk_Canvas canvas,
    Tk_Item *itemPtr,
    double originX,
    double originY,
    double angleRad)
{
    BitmapItem *bmapPtr = (BitmapItem *) itemPtr;

    TkRotatePoint(originX, originY, sin(angleRad), cos(angleRad),
	    &bmapPtr->x, &bmapPtr->y);
    ComputeBitmapBbox(canvas, bmapPtr);
}
 
/*
 *--------------------------------------------------------------
 *
 * TranslateBitmap --
 *
 *	This function is called to move an item by a given amount.

Changes to generic/tkCanvImg.c.

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			    Tk_Canvas canvas, struct Tk_Item *itemPtr,
			    int argc, Tcl_Obj *const argv[]);
static void		DeleteImage(Tk_Canvas canvas,
			    Tk_Item *itemPtr, Display *display);
static void		DisplayImage(Tk_Canvas canvas,
			    Tk_Item *itemPtr, Display *display, Drawable dst,
			    int x, int y, int width, int height);


static void		ScaleImage(Tk_Canvas canvas,
			    Tk_Item *itemPtr, double originX, double originY,
			    double scaleX, double scaleY);
static void		TranslateImage(Tk_Canvas canvas,
			    Tk_Item *itemPtr, double deltaX, double deltaY);

/*
................................................................................
    TranslateImage,		/* translateProc */
    NULL,			/* indexProc */
    NULL,			/* icursorProc */
    NULL,			/* selectionProc */
    NULL,			/* insertProc */
    NULL,			/* dTextProc */
    NULL,			/* nextPtr */

    NULL, 0, NULL, NULL
};
 
/*
 *--------------------------------------------------------------
 *
 * CreateImage --
 *
................................................................................

	Tcl_AppendPrintfToObj(psObj, "%.15g %.15g translate\n", x, y);
    }

    return Tk_PostscriptImage(image, interp, canvasWin,
	    ((TkCanvas *) canvas)->psInfo, 0, 0, width, height, prepass);
}


































 
/*
 *--------------------------------------------------------------
 *
 * ScaleImage --
 *
 *	This function is invoked to rescale an item.






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			    Tk_Canvas canvas, struct Tk_Item *itemPtr,
			    int argc, Tcl_Obj *const argv[]);
static void		DeleteImage(Tk_Canvas canvas,
			    Tk_Item *itemPtr, Display *display);
static void		DisplayImage(Tk_Canvas canvas,
			    Tk_Item *itemPtr, Display *display, Drawable dst,
			    int x, int y, int width, int height);
static void		RotateImage(Tk_Canvas canvas, Tk_Item *itemPtr,
			    double originX, double originY, double angleRad);
static void		ScaleImage(Tk_Canvas canvas,
			    Tk_Item *itemPtr, double originX, double originY,
			    double scaleX, double scaleY);
static void		TranslateImage(Tk_Canvas canvas,
			    Tk_Item *itemPtr, double deltaX, double deltaY);

/*
................................................................................
    TranslateImage,		/* translateProc */
    NULL,			/* indexProc */
    NULL,			/* icursorProc */
    NULL,			/* selectionProc */
    NULL,			/* insertProc */
    NULL,			/* dTextProc */
    NULL,			/* nextPtr */
    RotateImage,		/* rotateProc */
    0, NULL, NULL
};
 
/*
 *--------------------------------------------------------------
 *
 * CreateImage --
 *
................................................................................

	Tcl_AppendPrintfToObj(psObj, "%.15g %.15g translate\n", x, y);
    }

    return Tk_PostscriptImage(image, interp, canvasWin,
	    ((TkCanvas *) canvas)->psInfo, 0, 0, width, height, prepass);
}
 
/*
 *--------------------------------------------------------------
 *
 * RotateImage --
 *
 *	This function is called to rotate an image's origin by a given amount.
 *	This does *not* rotate the contents of the image.
 *
 * Results:
 *	None.
 *
 * Side effects:
 *	The position of the image anchor is rotated by angleRad radians about
 *	(originX, originY), and the bounding box is updated in the generic
 *	part of the item structure.
 *
 *--------------------------------------------------------------
 */

static void
RotateImage(
    Tk_Canvas canvas,
    Tk_Item *itemPtr,
    double originX,
    double originY,
    double angleRad)
{
    ImageItem *imgPtr = (ImageItem *) itemPtr;

    TkRotatePoint(originX, originY, sin(angleRad), cos(angleRad),
	    &imgPtr->x, &imgPtr->y);
    ComputeImageBbox(canvas, imgPtr);
}
 
/*
 *--------------------------------------------------------------
 *
 * ScaleImage --
 *
 *	This function is invoked to rescale an item.

Changes to generic/tkCanvLine.c.

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			    Tcl_FreeProc **freeProcPtr);
static int		ParseArrowShape(ClientData clientData,
			    Tcl_Interp *interp, Tk_Window tkwin,
			    const char *value, char *recordPtr, int offset);
static const char * PrintArrowShape(ClientData clientData,
			    Tk_Window tkwin, char *recordPtr, int offset,
			    Tcl_FreeProc **freeProcPtr);


static void		ScaleLine(Tk_Canvas canvas,
			    Tk_Item *itemPtr, double originX, double originY,
			    double scaleX, double scaleY);
static void		TranslateLine(Tk_Canvas canvas,
			    Tk_Item *itemPtr, double deltaX, double deltaY);
 
/*
................................................................................
    TranslateLine,			/* translateProc */
    GetLineIndex,			/* indexProc */
    NULL,				/* icursorProc */
    NULL,				/* selectionProc */
    LineInsert,				/* insertProc */
    LineDeleteCoords,			/* dTextProc */
    NULL,				/* nextPtr */

    NULL, 0, NULL, NULL
};

/*
 * The definition below determines how large are static arrays used to hold
 * spline points (splines larger than this have to have their arrays
 * malloc-ed).
 */
................................................................................
    }
    if (linePtr->lastArrowPtr != NULL) {
	for (i = 0, coordPtr = linePtr->lastArrowPtr; i < PTS_IN_ARROW;
		i++, coordPtr += 2) {
	    coordPtr[0] += deltaX;
	    coordPtr[1] += deltaY;
	}


















































    }
    ComputeLineBbox(canvas, linePtr);
}
 
/*
 *--------------------------------------------------------------
 *






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			    Tcl_FreeProc **freeProcPtr);
static int		ParseArrowShape(ClientData clientData,
			    Tcl_Interp *interp, Tk_Window tkwin,
			    const char *value, char *recordPtr, int offset);
static const char * PrintArrowShape(ClientData clientData,
			    Tk_Window tkwin, char *recordPtr, int offset,
			    Tcl_FreeProc **freeProcPtr);
static void		RotateLine(Tk_Canvas canvas, Tk_Item *itemPtr,
			    double originX, double originY, double angleRad);
static void		ScaleLine(Tk_Canvas canvas,
			    Tk_Item *itemPtr, double originX, double originY,
			    double scaleX, double scaleY);
static void		TranslateLine(Tk_Canvas canvas,
			    Tk_Item *itemPtr, double deltaX, double deltaY);
 
/*
................................................................................
    TranslateLine,			/* translateProc */
    GetLineIndex,			/* indexProc */
    NULL,				/* icursorProc */
    NULL,				/* selectionProc */
    LineInsert,				/* insertProc */
    LineDeleteCoords,			/* dTextProc */
    NULL,				/* nextPtr */
    RotateLine,				/* rotateProc */
    0, NULL, NULL
};

/*
 * The definition below determines how large are static arrays used to hold
 * spline points (splines larger than this have to have their arrays
 * malloc-ed).
 */
................................................................................
    }
    if (linePtr->lastArrowPtr != NULL) {
	for (i = 0, coordPtr = linePtr->lastArrowPtr; i < PTS_IN_ARROW;
		i++, coordPtr += 2) {
	    coordPtr[0] += deltaX;
	    coordPtr[1] += deltaY;
	}
    }
    ComputeLineBbox(canvas, linePtr);
}
 
/*
 *--------------------------------------------------------------
 *
 * RotateLine --
 *
 *	This function is called to rotate a line by a given amount about a
 *	point.
 *
 * Results:
 *	None.
 *
 * Side effects:
 *	The position of the line is rotated by angleRad about (originX,
 *	originY), and the bounding box is updated in the generic part of the
 *	item structure.
 *
 *--------------------------------------------------------------
 */

static void
RotateLine(
    Tk_Canvas canvas,		/* Canvas containing item. */
    Tk_Item *itemPtr,		/* Item that is being moved. */
    double originX, double originY,
    double angleRad)		/* Amount by which item is to be rotated. */
{
    LineItem *linePtr = (LineItem *) itemPtr;
    double *coordPtr;
    int i;
    double s = sin(angleRad), c = cos(angleRad);

    for (i = 0, coordPtr = linePtr->coordPtr; i < linePtr->numPoints;
	    i++, coordPtr += 2) {
	TkRotatePoint(originX, originY, s, c, &coordPtr[0], &coordPtr[1]);
    }
    if (linePtr->firstArrowPtr != NULL) {
	for (i = 0, coordPtr = linePtr->firstArrowPtr; i < PTS_IN_ARROW;
		i++, coordPtr += 2) {
	    TkRotatePoint(originX, originY, s, c, &coordPtr[0], &coordPtr[1]);
	}
    }
    if (linePtr->lastArrowPtr != NULL) {
	for (i = 0, coordPtr = linePtr->lastArrowPtr; i < PTS_IN_ARROW;
		i++, coordPtr += 2) {
	    TkRotatePoint(originX, originY, s, c, &coordPtr[0], &coordPtr[1]);
	}
    }
    ComputeLineBbox(canvas, linePtr);
}
 
/*
 *--------------------------------------------------------------
 *

Changes to generic/tkCanvPoly.c.

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			    Tk_Item *itemPtr, int beforeThis, Tcl_Obj *obj);
static int		PolygonToArea(Tk_Canvas canvas,
			    Tk_Item *itemPtr, double *rectPtr);
static double		PolygonToPoint(Tk_Canvas canvas,
			    Tk_Item *itemPtr, double *pointPtr);
static int		PolygonToPostscript(Tcl_Interp *interp,
			    Tk_Canvas canvas, Tk_Item *itemPtr, int prepass);


static void		ScalePolygon(Tk_Canvas canvas,
			    Tk_Item *itemPtr, double originX, double originY,
			    double scaleX, double scaleY);
static void		TranslatePolygon(Tk_Canvas canvas,
			    Tk_Item *itemPtr, double deltaX, double deltaY);

/*
................................................................................
    DisplayPolygon,			/* displayProc */
    TK_CONFIG_OBJS | TK_MOVABLE_POINTS,	/* flags */
    PolygonToPoint,			/* pointProc */
    PolygonToArea,			/* areaProc */
    PolygonToPostscript,		/* postscriptProc */
    ScalePolygon,			/* scaleProc */
    TranslatePolygon,			/* translateProc */
    GetPolygonIndex,	/* indexProc */
    NULL,				/* icursorProc */
    NULL,				/* selectionProc */
    PolygonInsert,		/* insertProc */
    PolygonDeleteCoords,		/* dTextProc */
    NULL,				/* nextPtr */

    NULL, 0, NULL, NULL
};

/*
 * The definition below determines how large are static arrays used to hold
 * spline points (splines larger than this have to have their arrays
 * malloc-ed).
 */
................................................................................
     */

  badIndex:
    Tcl_SetObjResult(interp, Tcl_ObjPrintf("bad index \"%s\"", string));
    Tcl_SetErrorCode(interp, "TK", "CANVAS", "ITEM_INDEX", "POLY", NULL);
    return TCL_ERROR;
}






































 
/*
 *--------------------------------------------------------------
 *
 * TranslatePolygon --
 *
 *	This function is called to move a polygon by a given amount.






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			    Tk_Item *itemPtr, int beforeThis, Tcl_Obj *obj);
static int		PolygonToArea(Tk_Canvas canvas,
			    Tk_Item *itemPtr, double *rectPtr);
static double		PolygonToPoint(Tk_Canvas canvas,
			    Tk_Item *itemPtr, double *pointPtr);
static int		PolygonToPostscript(Tcl_Interp *interp,
			    Tk_Canvas canvas, Tk_Item *itemPtr, int prepass);
static void		RotatePolygon(Tk_Canvas canvas, Tk_Item *itemPtr,
			    double originX, double originY, double angleRad);
static void		ScalePolygon(Tk_Canvas canvas,
			    Tk_Item *itemPtr, double originX, double originY,
			    double scaleX, double scaleY);
static void		TranslatePolygon(Tk_Canvas canvas,
			    Tk_Item *itemPtr, double deltaX, double deltaY);

/*
................................................................................
    DisplayPolygon,			/* displayProc */
    TK_CONFIG_OBJS | TK_MOVABLE_POINTS,	/* flags */
    PolygonToPoint,			/* pointProc */
    PolygonToArea,			/* areaProc */
    PolygonToPostscript,		/* postscriptProc */
    ScalePolygon,			/* scaleProc */
    TranslatePolygon,			/* translateProc */
    GetPolygonIndex,			/* indexProc */
    NULL,				/* icursorProc */
    NULL,				/* selectionProc */
    PolygonInsert,			/* insertProc */
    PolygonDeleteCoords,		/* dTextProc */
    NULL,				/* nextPtr */
    RotatePolygon,			/* rotateProc */
    0, NULL, NULL
};

/*
 * The definition below determines how large are static arrays used to hold
 * spline points (splines larger than this have to have their arrays
 * malloc-ed).
 */
................................................................................
     */

  badIndex:
    Tcl_SetObjResult(interp, Tcl_ObjPrintf("bad index \"%s\"", string));
    Tcl_SetErrorCode(interp, "TK", "CANVAS", "ITEM_INDEX", "POLY", NULL);
    return TCL_ERROR;
}
 
/*
 *--------------------------------------------------------------
 *
 * RotatePolygon --
 *
 *	This function is called to rotate a polygon by a given amount about a
 *	point.
 *
 * Results:
 *	None.
 *
 * Side effects:
 *	The position of the polygon is rotated by angleRad about (originX,
 *	originY), and the bounding box is updated in the generic part of the
 *	item structure.
 *
 *--------------------------------------------------------------
 */

static void
RotatePolygon(
    Tk_Canvas canvas,		/* Canvas containing item. */
    Tk_Item *itemPtr,		/* Item that is being moved. */
    double originX, double originY,
    double angleRad)		/* Amount by which item is to be rotated. */
{
    PolygonItem *polyPtr = (PolygonItem *) itemPtr;
    double *coordPtr;
    int i;
    double s = sin(angleRad), c = cos(angleRad);

    for (i = 0, coordPtr = polyPtr->coordPtr; i < polyPtr->numPoints;
	    i++, coordPtr += 2) {
	TkRotatePoint(originX, originY, s, c, &coordPtr[0], &coordPtr[1]);
    }
    ComputePolygonBbox(canvas, polyPtr);
}
 
/*
 *--------------------------------------------------------------
 *
 * TranslatePolygon --
 *
 *	This function is called to move a polygon by a given amount.

Changes to generic/tkCanvText.c.

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			    Tk_Item *itemPtr, int beforeThis, Tcl_Obj *obj);
static int		TextToArea(Tk_Canvas canvas,
			    Tk_Item *itemPtr, double *rectPtr);
static double		TextToPoint(Tk_Canvas canvas,
			    Tk_Item *itemPtr, double *pointPtr);
static int		TextToPostscript(Tcl_Interp *interp,
			    Tk_Canvas canvas, Tk_Item *itemPtr, int prepass);


static void		TranslateText(Tk_Canvas canvas,
			    Tk_Item *itemPtr, double deltaX, double deltaY);

/*
 * The structures below defines the rectangle and oval item types by means of
 * functions that can be invoked by generic item code.
 */
................................................................................
    TranslateText,		/* translateProc */
    GetTextIndex,		/* indexProc */
    SetTextCursor,		/* icursorProc */
    GetSelText,			/* selectionProc */
    TextInsert,			/* insertProc */
    TextDeleteChars,		/* dTextProc */
    NULL,			/* nextPtr */

    NULL, 0, NULL, NULL
};

#define ROUND(d) ((int) floor((d) + 0.5))
 
/*
 *--------------------------------------------------------------
 *
................................................................................
    return TkIntersectAngledTextLayout(textPtr->textLayout,
	    (int) ((rectPtr[0] + 0.5) - textPtr->drawOrigin[0]),
	    (int) ((rectPtr[1] + 0.5) - textPtr->drawOrigin[1]),
	    (int) (rectPtr[2] - rectPtr[0] + 0.5),
	    (int) (rectPtr[3] - rectPtr[1] + 0.5),
	    textPtr->angle);
}

































 
/*
 *--------------------------------------------------------------
 *
 * ScaleText --
 *
 *	This function is invoked to rescale a text item.






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			    Tk_Item *itemPtr, int beforeThis, Tcl_Obj *obj);
static int		TextToArea(Tk_Canvas canvas,
			    Tk_Item *itemPtr, double *rectPtr);
static double		TextToPoint(Tk_Canvas canvas,
			    Tk_Item *itemPtr, double *pointPtr);
static int		TextToPostscript(Tcl_Interp *interp,
			    Tk_Canvas canvas, Tk_Item *itemPtr, int prepass);
static void		RotateText(Tk_Canvas canvas, Tk_Item *itemPtr,
			    double originX, double originY, double angleRad);
static void		TranslateText(Tk_Canvas canvas,
			    Tk_Item *itemPtr, double deltaX, double deltaY);

/*
 * The structures below defines the rectangle and oval item types by means of
 * functions that can be invoked by generic item code.
 */
................................................................................
    TranslateText,		/* translateProc */
    GetTextIndex,		/* indexProc */
    SetTextCursor,		/* icursorProc */
    GetSelText,			/* selectionProc */
    TextInsert,			/* insertProc */
    TextDeleteChars,		/* dTextProc */
    NULL,			/* nextPtr */
    RotateText,			/* rotateProc */
    0, NULL, NULL
};

#define ROUND(d) ((int) floor((d) + 0.5))
 
/*
 *--------------------------------------------------------------
 *
................................................................................
    return TkIntersectAngledTextLayout(textPtr->textLayout,
	    (int) ((rectPtr[0] + 0.5) - textPtr->drawOrigin[0]),
	    (int) ((rectPtr[1] + 0.5) - textPtr->drawOrigin[1]),
	    (int) (rectPtr[2] - rectPtr[0] + 0.5),
	    (int) (rectPtr[3] - rectPtr[1] + 0.5),
	    textPtr->angle);
}
 
/*
 *--------------------------------------------------------------
 *
 * RotateText --
 *
 *	This function is called to rotate a text item by a given amount about a
 *	point. Note that this does *not* rotate the text of the item.
 *
 * Results:
 *	None.
 *
 * Side effects:
 *	The position of the text anchor is rotated by angleRad about (originX,
 *	originY), and the bounding box is updated in the generic part of the
 *	item structure.
 *
 *--------------------------------------------------------------
 */

static void
RotateText(
    Tk_Canvas canvas,		/* Canvas containing item. */
    Tk_Item *itemPtr,		/* Item that is being rotated. */
    double originX, double originY,
    double angleRad)		/* Amount by which item is to be rotated. */
{
    TextItem *textPtr = (TextItem *) itemPtr;

    TkRotatePoint(originX, originY, sin(angleRad), cos(angleRad),
	    &textPtr->x, &textPtr->y);
    ComputeTextBbox(canvas, textPtr);
}
 
/*
 *--------------------------------------------------------------
 *
 * ScaleText --
 *
 *	This function is invoked to rescale a text item.

Changes to generic/tkCanvUtil.c.

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	Tk_CanvasSetOffset(canvas, outline->gc, tsoffset);
	tsoffset->xoffset += w;
	tsoffset->yoffset += h;
	return 1;
    }
    return 0;
}

 
/*
 *--------------------------------------------------------------
 *
 * Tk_ResetOutlineGC
 *
 *	Restores the GC to the situation before Tk_ChangeOutlineGC() was
................................................................................
	TranslateAndAppendCoords(canvPtr, a[i*2], a[i*2+1], outArr, i);
    }
    if (tempArr != staticSpace) {
	ckfree(tempArr);
    }
    return numOutput;
}





































 
/*
 * Local Variables:
 * mode: c
 * c-basic-offset: 4
 * fill-column: 78
 * End:
 */






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	Tk_CanvasSetOffset(canvas, outline->gc, tsoffset);
	tsoffset->xoffset += w;
	tsoffset->yoffset += h;
	return 1;
    }
    return 0;
}

 
/*
 *--------------------------------------------------------------
 *
 * Tk_ResetOutlineGC
 *
 *	Restores the GC to the situation before Tk_ChangeOutlineGC() was
................................................................................
	TranslateAndAppendCoords(canvPtr, a[i*2], a[i*2+1], outArr, i);
    }
    if (tempArr != staticSpace) {
	ckfree(tempArr);
    }
    return numOutput;
}
 
/*
 *--------------------------------------------------------------
 *
 * TkRotatePoint --
 *
 *	Rotate a point about another point. The angle should be converted into
 *	its sine and cosine before calling this function.
 *
 * Results:
 *	None
 *
 * Side effects:
 *	The point in (*xPtr,*yPtr) is updated to be rotated about
 *	(originX,originY) by the amount given by the sine and cosine of the
 *	angle to rotate.
 *
 *--------------------------------------------------------------
 */

void
TkRotatePoint(
    double originX, double originY,	/* The point about which to rotate. */
    double sine, double cosine,		/* How much to rotate? */
    double *xPtr, double *yPtr)		/* The point to be rotated. (INOUT) */
{
    double x = *xPtr - originX;
    double y = *yPtr - originY;

    /*
     * Beware! The canvas coordinate space is flipped vertically, so rotations
     * go the "wrong" way with respect to mathematics.
     */

    *xPtr = originX + x * cosine + y * sine;
    *yPtr = originY - x * sine + y * cosine;
}
 
/*
 * Local Variables:
 * mode: c
 * c-basic-offset: 4
 * fill-column: 78
 * End:
 */

Changes to generic/tkCanvWind.c.

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			    Tk_Canvas canvas, struct Tk_Item *itemPtr,
			    int objc, Tcl_Obj *const objv[]);
static void		DeleteWinItem(Tk_Canvas canvas,
			    Tk_Item *itemPtr, Display *display);
static void		DisplayWinItem(Tk_Canvas canvas,
			    Tk_Item *itemPtr, Display *display, Drawable dst,
			    int x, int y, int width, int height);


static void		ScaleWinItem(Tk_Canvas canvas,
			    Tk_Item *itemPtr, double originX, double originY,
			    double scaleX, double scaleY);
static void		TranslateWinItem(Tk_Canvas canvas,
			    Tk_Item *itemPtr, double deltaX, double deltaY);
static int		WinItemCoords(Tcl_Interp *interp,
			    Tk_Canvas canvas, Tk_Item *itemPtr, int objc,
................................................................................
    TranslateWinItem,		/* translateProc */
    NULL,			/* indexProc */
    NULL,			/* cursorProc */
    NULL,			/* selectionProc */
    NULL,			/* insertProc */
    NULL,			/* dTextProc */
    NULL,			/* nextPtr */

    NULL, 0, NULL, NULL
};

/*
 * The structure below defines the official type record for the canvas (as
 * geometry manager):
 */

................................................................................
	Tcl_AppendObjToObj(Tcl_GetObjResult(interp), psObj);
    } else {
	Tcl_DiscardInterpState(interpState);
    }
    Tcl_DecrRefCount(psObj);
    return result;
}


































 
/*
 *--------------------------------------------------------------
 *
 * ScaleWinItem --
 *
 *	This function is invoked to rescale a window item.






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			    Tk_Canvas canvas, struct Tk_Item *itemPtr,
			    int objc, Tcl_Obj *const objv[]);
static void		DeleteWinItem(Tk_Canvas canvas,
			    Tk_Item *itemPtr, Display *display);
static void		DisplayWinItem(Tk_Canvas canvas,
			    Tk_Item *itemPtr, Display *display, Drawable dst,
			    int x, int y, int width, int height);
static void		RotateWinItem(Tk_Canvas canvas, Tk_Item *itemPtr,
			    double originX, double originY, double angleRad);
static void		ScaleWinItem(Tk_Canvas canvas,
			    Tk_Item *itemPtr, double originX, double originY,
			    double scaleX, double scaleY);
static void		TranslateWinItem(Tk_Canvas canvas,
			    Tk_Item *itemPtr, double deltaX, double deltaY);
static int		WinItemCoords(Tcl_Interp *interp,
			    Tk_Canvas canvas, Tk_Item *itemPtr, int objc,
................................................................................
    TranslateWinItem,		/* translateProc */
    NULL,			/* indexProc */
    NULL,			/* cursorProc */
    NULL,			/* selectionProc */
    NULL,			/* insertProc */
    NULL,			/* dTextProc */
    NULL,			/* nextPtr */
    RotateWinItem,		/* rotateProc */
    0, NULL, NULL
};

/*
 * The structure below defines the official type record for the canvas (as
 * geometry manager):
 */

................................................................................
	Tcl_AppendObjToObj(Tcl_GetObjResult(interp), psObj);
    } else {
	Tcl_DiscardInterpState(interpState);
    }
    Tcl_DecrRefCount(psObj);
    return result;
}
 
/*
 *--------------------------------------------------------------
 *
 * RotateWinItem --
 *
 *	This function is called to rotate a window item by a given amount
 *	about a point. Note that this does *not* rotate the window of the
 *	item.
 *
 * Results:
 *	None.
 *
 * Side effects:
 *	The position of the window anchor is rotated by angleRad about (originX,
 *	originY), and the bounding box is updated in the generic part of the
 *	item structure.
 *
 *--------------------------------------------------------------
 */

static void
RotateWinItem(
    Tk_Canvas canvas,		/* Canvas containing item. */
    Tk_Item *itemPtr,		/* Item that is being rotated. */
    double originX, double originY,
    double angleRad)		/* Amount by which item is to be rotated. */
{
    WindowItem *winItemPtr = (WindowItem *) itemPtr;

    TkRotatePoint(originX, originY, sin(angleRad), cos(angleRad),
	    &winItemPtr->x, &winItemPtr->y);
    ComputeWindowBbox(canvas, winItemPtr);
}
 
/*
 *--------------------------------------------------------------
 *
 * ScaleWinItem --
 *
 *	This function is invoked to rescale a window item.

Changes to generic/tkCanvas.c.

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1761
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static int		CanvasWidgetCmd(ClientData clientData,
			    Tcl_Interp *interp, int argc,
			    Tcl_Obj *const *argv);
static void		CanvasWorldChanged(ClientData instanceData);
static int		ConfigureCanvas(Tcl_Interp *interp,
			    TkCanvas *canvasPtr, int argc,
			    Tcl_Obj *const *argv, int flags);



static void		DestroyCanvas(void *memPtr);
static int		DrawCanvas(Tcl_Interp *interp, ClientData clientData, Tk_PhotoHandle photohandle, int subsample, int zoom);
static void		DisplayCanvas(ClientData clientData);
static void		DoItem(Tcl_Obj *accumObj,
			    Tk_Item *itemPtr, Tk_Uid tag);
static void		EventuallyRedrawItem(TkCanvas *canvasPtr,
			    Tk_Item *itemPtr);
................................................................................
    Tk_Item *itemPtr,
    double xDelta,
    double yDelta)
{
    itemPtr->typePtr->translateProc((Tk_Canvas) canvasPtr, itemPtr,
	    xDelta, yDelta);
}
































































































 
/*
 *--------------------------------------------------------------
 *
 * Tk_CanvasObjCmd --
 *
 *	This function is invoked to process the "canvas" Tcl command. See the
................................................................................

    int index;
    static const char *const optionStrings[] = {
	"addtag",	"bbox",		"bind",		"canvasx",
	"canvasy",	"cget",		"configure",	"coords",
	"create",	"dchars",	"delete",	"dtag",
	"find",		"focus",	"gettags",	"icursor",
        "image",
	"imove",	"index",	"insert",	"itemcget",
	"itemconfigure",
	"lower",	"move",		"moveto",	"postscript",
	"raise",	"rchars",	"scale",	"scan",
	"select",	"type",		"xview",	"yview",
	NULL
    };
    enum options {
	CANV_ADDTAG,	CANV_BBOX,	CANV_BIND,	CANV_CANVASX,
	CANV_CANVASY,	CANV_CGET,	CANV_CONFIGURE,	CANV_COORDS,
	CANV_CREATE,	CANV_DCHARS,	CANV_DELETE,	CANV_DTAG,
	CANV_FIND,	CANV_FOCUS,	CANV_GETTAGS,	CANV_ICURSOR,
        CANV_IMAGE,
	CANV_IMOVE,	CANV_INDEX,	CANV_INSERT,	CANV_ITEMCGET,
	CANV_ITEMCONFIGURE,
	CANV_LOWER,	CANV_MOVE,	CANV_MOVETO,	CANV_POSTSCRIPT,
	CANV_RAISE,	CANV_RCHARS,	CANV_SCALE,	CANV_SCAN,
	CANV_SELECT,	CANV_TYPE,	CANV_XVIEW,	CANV_YVIEW

    };

    if (objc < 2) {
	Tcl_WrongNumArgs(interp, 1, objv, "option ?arg ...?");
	return TCL_ERROR;
    }
    if (Tcl_GetIndexFromObj(interp, objv[1], optionStrings, "option", 0,
................................................................................
            if (!(dontRedraw1 && dontRedraw2)) {
		Tk_CanvasEventuallyRedraw((Tk_Canvas) canvasPtr,
			x1, y1, x2, y2);
		EventuallyRedrawItem(canvasPtr, itemPtr);
	    }
	    itemPtr->redraw_flags &= ~TK_ITEM_DONT_REDRAW;
	}
























	break;
    }
    case CANV_SCALE: {
	double xOrigin, yOrigin, xScale, yScale;

	if (objc != 7) {
	    Tcl_WrongNumArgs(interp, 2, objv,






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237
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...
841
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848
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860
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1852
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1889
static int		CanvasWidgetCmd(ClientData clientData,
			    Tcl_Interp *interp, int argc,
			    Tcl_Obj *const *argv);
static void		CanvasWorldChanged(ClientData instanceData);
static int		ConfigureCanvas(Tcl_Interp *interp,
			    TkCanvas *canvasPtr, int argc,
			    Tcl_Obj *const *argv, int flags);
static void		DefaultRotateImplementation(TkCanvas *canvasPtr,
			    Tk_Item *itemPtr, double x, double y,
			    double angleRadians);
static void		DestroyCanvas(void *memPtr);
static int		DrawCanvas(Tcl_Interp *interp, ClientData clientData, Tk_PhotoHandle photohandle, int subsample, int zoom);
static void		DisplayCanvas(ClientData clientData);
static void		DoItem(Tcl_Obj *accumObj,
			    Tk_Item *itemPtr, Tk_Uid tag);
static void		EventuallyRedrawItem(TkCanvas *canvasPtr,
			    Tk_Item *itemPtr);
................................................................................
    Tk_Item *itemPtr,
    double xDelta,
    double yDelta)
{
    itemPtr->typePtr->translateProc((Tk_Canvas) canvasPtr, itemPtr,
	    xDelta, yDelta);
}

static inline void
ItemRotate(
    TkCanvas *canvasPtr,
    Tk_Item *itemPtr,
    double x,
    double y,
    double angleRadians)
{
    if (itemPtr->typePtr->rotateProc != NULL) {
	itemPtr->typePtr->rotateProc((Tk_Canvas) canvasPtr,
		itemPtr, x, y, angleRadians);
    } else {
	DefaultRotateImplementation(canvasPtr, itemPtr, x, y, angleRadians);
    }
}
 
/*
 *--------------------------------------------------------------
 *
 * DefaultRotateImplementation --
 *
 *	The default implementation of the rotation operation, used when items
 *	do not provide their own version.
 *
 *--------------------------------------------------------------
 */

static void
DefaultRotateImplementation(
    TkCanvas *canvasPtr,
    Tk_Item *itemPtr,
    double x,
    double y,
    double angleRadians)
{
    int objc, i, ok = 1;
    Tcl_Obj **objv, **newObjv;
    double *coordv;
    double s = sin(angleRadians);
    double c = cos(angleRadians);
    Tcl_Interp *interp = canvasPtr->interp;

    /*
     * Get the coordinates out of the item.
     */

    if (ItemCoords(canvasPtr, itemPtr, 0, NULL) == TCL_OK &&
	    Tcl_ListObjGetElements(NULL, Tcl_GetObjResult(interp),
		    &objc, &objv) == TCL_OK) {
	coordv = (double *) Tcl_Alloc(sizeof(double) * objc);
	for (i=0 ; i<objc ; i++) {
	    if (Tcl_GetDoubleFromObj(NULL, objv[i], &coordv[i]) != TCL_OK) {
		ok = 0;
		break;
	    }
	}
	if (ok) {
	    /*
	     * Apply the rotation.
	     */

	    for (i=0 ; i<objc ; i+=2) {
		double px = coordv[i+0] - x;
		double py = coordv[i+1] - y;
		double nx = px * c - py * s;
		double ny = px * s + py * c;

		coordv[i+0] = nx + x;
		coordv[i+1] = ny + y;
	    }

	    /*
	     * Write the coordinates back into the item.
	     */

	    newObjv = (Tcl_Obj **) Tcl_Alloc(sizeof(Tcl_Obj *) * objc);
	    for (i=0 ; i<objc ; i++) {
		newObjv[i] = Tcl_NewDoubleObj(coordv[i]);
		Tcl_IncrRefCount(newObjv[i]);
	    }
	    ItemCoords(canvasPtr, itemPtr, objc, newObjv);
	    for (i=0 ; i<objc ; i++) {
		Tcl_DecrRefCount(newObjv[i]);
	    }
	    Tcl_Free((char *) newObjv);
	}
	Tcl_Free((char *) coordv);
    }

    /*
     * The interpreter result was (probably) modified above; reset it.
     */

    Tcl_ResetResult(interp);
}
 
/*
 *--------------------------------------------------------------
 *
 * Tk_CanvasObjCmd --
 *
 *	This function is invoked to process the "canvas" Tcl command. See the
................................................................................

    int index;
    static const char *const optionStrings[] = {
	"addtag",	"bbox",		"bind",		"canvasx",
	"canvasy",	"cget",		"configure",	"coords",
	"create",	"dchars",	"delete",	"dtag",
	"find",		"focus",	"gettags",	"icursor",

        "image",	"imove",	"index",	"insert",
	"itemcget",	"itemconfigure",
	"lower",	"move",		"moveto",	"postscript",
	"raise",	"rchars",	"rotate",	"scale",
	"scan",		"select",	"type",		"xview",
	"yview",	NULL
    };
    enum options {
	CANV_ADDTAG,	CANV_BBOX,	CANV_BIND,	CANV_CANVASX,
	CANV_CANVASY,	CANV_CGET,	CANV_CONFIGURE,	CANV_COORDS,
	CANV_CREATE,	CANV_DCHARS,	CANV_DELETE,	CANV_DTAG,
	CANV_FIND,	CANV_FOCUS,	CANV_GETTAGS,	CANV_ICURSOR,

        CANV_IMAGE,	CANV_IMOVE,	CANV_INDEX,	CANV_INSERT,
	CANV_ITEMCGET,	CANV_ITEMCONFIGURE,
	CANV_LOWER,	CANV_MOVE,	CANV_MOVETO,	CANV_POSTSCRIPT,
	CANV_RAISE,	CANV_RCHARS,	CANV_ROTATE,	CANV_SCALE,
	CANV_SCAN,	CANV_SELECT,	CANV_TYPE,	CANV_XVIEW,
	CANV_YVIEW
    };

    if (objc < 2) {
	Tcl_WrongNumArgs(interp, 1, objv, "option ?arg ...?");
	return TCL_ERROR;
    }
    if (Tcl_GetIndexFromObj(interp, objv[1], optionStrings, "option", 0,
................................................................................
            if (!(dontRedraw1 && dontRedraw2)) {
		Tk_CanvasEventuallyRedraw((Tk_Canvas) canvasPtr,
			x1, y1, x2, y2);
		EventuallyRedrawItem(canvasPtr, itemPtr);
	    }
	    itemPtr->redraw_flags &= ~TK_ITEM_DONT_REDRAW;
	}
	break;
    }
    case CANV_ROTATE: {
	double x, y, angle;
	Tk_Canvas canvas = (Tk_Canvas) canvasPtr;

	if (objc != 6) {
	    Tcl_WrongNumArgs(interp, 2, objv, "tagOrId x y angle");
	    result = TCL_ERROR;
	    goto done;
	}
	if (Tk_CanvasGetCoordFromObj(interp, canvas, objv[3], &x) != TCL_OK ||
		Tk_CanvasGetCoordFromObj(interp, canvas, objv[4], &y) != TCL_OK ||
		Tcl_GetDoubleFromObj(interp, objv[5], &angle) != TCL_OK) {
	    result = TCL_ERROR;
	    goto done;
	}
	angle = angle * 3.1415927 / 180.0;
	FOR_EVERY_CANVAS_ITEM_MATCHING(objv[2], &searchPtr, goto done) {
	    EventuallyRedrawItem(canvasPtr, itemPtr);
	    ItemRotate(canvasPtr, itemPtr, x, y, angle);
	    EventuallyRedrawItem(canvasPtr, itemPtr);
	    canvasPtr->flags |= REPICK_NEEDED;
	}
	break;
    }
    case CANV_SCALE: {
	double xOrigin, yOrigin, xScale, yScale;

	if (objc != 7) {
	    Tcl_WrongNumArgs(interp, 2, objv,

Changes to generic/tkEntry.c.

3215
3216
3217
3218
3219
3220
3221
3222
3223
3224
3225
3226
3227
3228
3229
3230
3231
3232
3233
3234
3235
3236
3237
3238
3239
3240
3241
3242
3243
3244
3245
3246
3247
3248
3249
3250
3251
3252
3253
3254
3255




















3256
3257
3258
3259
3260
3261
3262
3263
3264
3265
3266
3267
3268
3269
 */

	/* ARGSUSED */
static char *
EntryTextVarProc(
    ClientData clientData,	/* Information about button. */
    Tcl_Interp *interp,		/* Interpreter containing variable. */
    const char *name1,		/* Name of variable. */
    const char *name2,		/* Second part of variable name. */
    int flags)			/* Information about what happened. */
{
    Entry *entryPtr = clientData;
    const char *value;

    if (entryPtr->flags & ENTRY_DELETED) {
	/*
	 * Just abort early if we entered here while being deleted.
	 */
	return NULL;
    }

    /*
     * See ticket [5d991b82].
     */

    if (entryPtr->textVarName == NULL) {
	if (!(flags & TCL_INTERP_DESTROYED)) {
	    Tcl_UntraceVar2(interp, name1, name2,
		    TCL_GLOBAL_ONLY|TCL_TRACE_WRITES|TCL_TRACE_UNSETS,
		    EntryTextVarProc, clientData);
	}
 	return NULL;
     }

    /*
     * If the variable is unset, then immediately recreate it unless the whole
     * interpreter is going away.
     */

    if (flags & TCL_TRACE_UNSETS) {
	if ((flags & TCL_TRACE_DESTROYED) && !(flags & TCL_INTERP_DESTROYED)) {




















	    Tcl_SetVar2(interp, entryPtr->textVarName, NULL,
		    entryPtr->string, TCL_GLOBAL_ONLY);
	    Tcl_TraceVar2(interp, entryPtr->textVarName, NULL,
		    TCL_GLOBAL_ONLY|TCL_TRACE_WRITES|TCL_TRACE_UNSETS,
		    EntryTextVarProc, clientData);
	    entryPtr->flags |= ENTRY_VAR_TRACED;
	}
	return NULL;
    }

    /*
     * Update the entry's text with the value of the variable, unless the
     * entry already has that value (this happens when the variable changes
     * value because we changed it because someone typed in the entry).






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3215
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3236
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 */

	/* ARGSUSED */
static char *
EntryTextVarProc(
    ClientData clientData,	/* Information about button. */
    Tcl_Interp *interp,		/* Interpreter containing variable. */
    const char *name1,		/* Not used. */
    const char *name2,		/* Not used. */
    int flags)			/* Information about what happened. */
{
    Entry *entryPtr = clientData;
    const char *value;

    if (entryPtr->flags & ENTRY_DELETED) {
	/*
	 * Just abort early if we entered here while being deleted.
	 */
	return NULL;
    }














    /*
     * If the variable is unset, then immediately recreate it unless the whole
     * interpreter is going away.
     */

    if (flags & TCL_TRACE_UNSETS) {
        if (!Tcl_InterpDeleted(interp) && entryPtr->textVarName) {
            ClientData probe = NULL;

            do {
                probe = Tcl_VarTraceInfo(interp,
                        entryPtr->textVarName,
                        TCL_GLOBAL_ONLY|TCL_TRACE_WRITES|TCL_TRACE_UNSETS,
                        EntryTextVarProc, probe);
                if (probe == (ClientData)entryPtr) {
                    break;
                }
            } while (probe);
            if (probe) {
                /*
                 * We were able to fetch the unset trace for our
                 * textVarName, which means it is not unset and not
                 * the cause of this unset trace. Instead some outdated
                 * former variable must be, and we should ignore it.
                 */
                return NULL;
            }
	    Tcl_SetVar2(interp, entryPtr->textVarName, NULL,
		    entryPtr->string, TCL_GLOBAL_ONLY);
	    Tcl_TraceVar2(interp, entryPtr->textVarName, NULL,
		    TCL_GLOBAL_ONLY|TCL_TRACE_WRITES|TCL_TRACE_UNSETS,
		    EntryTextVarProc, clientData);
	    entryPtr->flags |= ENTRY_VAR_TRACED;
        }
	return NULL;
    }

    /*
     * Update the entry's text with the value of the variable, unless the
     * entry already has that value (this happens when the variable changes
     * value because we changed it because someone typed in the entry).

Added generic/tkImgSVGnano.c.




















































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































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/*
 * tkImgSVGnano.c
 *
 *	A photo file handler for SVG files.
 *
 * Copyright (c) 2013-14 Mikko Mononen [email protected]
 * Copyright (c) 2018 Christian Gollwitzer [email protected]
 * Copyright (c) 2018 Rene Zaumseil [email protected]
 *
 * See the file "license.terms" for information on usage and redistribution of
 * this file, and for a DISCLAIMER OF ALL WARRANTIES.
 *
 * This handler is build using the original nanosvg library files from
 * https://github.com/memononen/nanosvg and the tcl extension files from
 * https://github.com/auriocus/tksvg
 *
 */

#include "tkInt.h"
#define NANOSVG_malloc	ckalloc
#define NANOSVG_realloc	ckrealloc
#define NANOSVG_free	ckfree
#define NANOSVG_SCOPE MODULE_SCOPE
#define NANOSVG_ALL_COLOR_KEYWORDS
#define NANOSVG_IMPLEMENTATION
#include "nanosvg.h"
#define NANOSVGRAST_IMPLEMENTATION
#include "nanosvgrast.h"

/* Additional parameters to nsvgRasterize() */

typedef struct {
    double x;
    double y;
    double scale;
} RastOpts;

/*
 * Per interp cache of last NSVGimage which was matched to
 * be immediately rasterized after the match. This helps to
 * eliminate double parsing of the SVG file/string.
 */

typedef struct {
    ClientData dataOrChan;
    Tcl_DString formatString;
    NSVGimage *nsvgImage;
    RastOpts ropts;
} NSVGcache;

static int		FileMatchSVG(Tcl_Channel chan, const char *fileName,
			    Tcl_Obj *format, int *widthPtr, int *heightPtr,
			    Tcl_Interp *interp);
static int		FileReadSVG(Tcl_Interp *interp, Tcl_Channel chan,
			    const char *fileName, Tcl_Obj *format,
			    Tk_PhotoHandle imageHandle, int destX, int destY,
			    int width, int height, int srcX, int srcY);
static int		StringMatchSVG(Tcl_Obj *dataObj, Tcl_Obj *format,
			    int *widthPtr, int *heightPtr, Tcl_Interp *interp);
static int		StringReadSVG(Tcl_Interp *interp, Tcl_Obj *dataObj,
			    Tcl_Obj *format, Tk_PhotoHandle imageHandle,
			    int destX, int destY, int width, int height,
			    int srcX, int srcY);
static NSVGimage *	ParseSVGWithOptions(Tcl_Interp *interp,
			    const char *input, int length, Tcl_Obj *format,
			    RastOpts *ropts);
static int		RasterizeSVG(Tcl_Interp *interp,
			    Tk_PhotoHandle imageHandle, NSVGimage *nsvgImage,
			    int destX, int destY, int width, int height,
			    int srcX, int srcY, RastOpts *ropts);
static NSVGcache *	GetCachePtr(Tcl_Interp *interp);
static int		CacheSVG(Tcl_Interp *interp, ClientData dataOrChan,
			    Tcl_Obj *formatObj, NSVGimage *nsvgImage,
			    RastOpts *ropts);
static NSVGimage *	GetCachedSVG(Tcl_Interp *interp, ClientData dataOrChan,
			    Tcl_Obj *formatObj, RastOpts *ropts);
static void		CleanCache(Tcl_Interp *interp);
static void		FreeCache(ClientData clientData, Tcl_Interp *interp);

/*
 * The format record for the SVG nano file format:
 */

Tk_PhotoImageFormat tkImgFmtSVGnano = {
    "svg",			/* name */
    FileMatchSVG,		/* fileMatchProc */
    StringMatchSVG,		/* stringMatchProc */
    FileReadSVG,		/* fileReadProc */
    StringReadSVG,		/* stringReadProc */
    NULL,			/* fileWriteProc */
    NULL,			/* stringWriteProc */
    NULL
};

/*
 *----------------------------------------------------------------------
 *
 * FileMatchSVG --
 *
 *	This function is invoked by the photo image type to see if a file
 *	contains image data in SVG format.
 *
 * Results:
 *	The return value is >0 if the file can be successfully parsed,
 *	and 0 otherwise.
 *
 * Side effects:
 *	The file is saved in the internal cache for further use.
 *
 *----------------------------------------------------------------------
 */

static int
FileMatchSVG(
    Tcl_Channel chan,
    const char *fileName,
    Tcl_Obj *formatObj,
    int *widthPtr, int *heightPtr,
    Tcl_Interp *interp)
{
    int length;
    Tcl_Obj *dataObj = Tcl_NewObj();
    const char *data;
    RastOpts ropts;
    NSVGimage *nsvgImage;

    CleanCache(interp);
    if (Tcl_ReadChars(chan, dataObj, -1, 0) == -1) {
	/* in case of an error reading the file */
	Tcl_DecrRefCount(dataObj);
	return 0;
    }
    data = Tcl_GetStringFromObj(dataObj, &length);
    nsvgImage = ParseSVGWithOptions(interp, data, length, formatObj, &ropts);
    Tcl_DecrRefCount(dataObj);
    if (nsvgImage != NULL) {
	*widthPtr = (int) ceil(nsvgImage->width * ropts.scale);
	*heightPtr = (int) ceil(nsvgImage->height * ropts.scale);
        if ((*widthPtr <= 0) || (*heightPtr <= 0)) {
            nsvgDelete(nsvgImage);
            return 0;
        }
	if (!CacheSVG(interp, chan, formatObj, nsvgImage, &ropts)) {
	    nsvgDelete(nsvgImage);
	}
	return 1;
    }
    return 0;
}

/*
 *----------------------------------------------------------------------
 *
 * FileReadSVG --
 *
 *	This function is called by the photo image type to read SVG format
 *	data from a file and write it into a given photo image.
 *
 * Results:
 *	A standard TCL completion code. If TCL_ERROR is returned then an error
 *	message is left in the interp's result.
 *
 * Side effects:
 *	The access position in file f is changed, and new data is added to the
 *	image given by imageHandle.
 *
 *----------------------------------------------------------------------
 */

static int
FileReadSVG(
    Tcl_Interp *interp,
    Tcl_Channel chan,
    const char *fileName,
    Tcl_Obj *formatObj,
    Tk_PhotoHandle imageHandle,
    int destX, int destY,
    int width, int height,
    int srcX, int srcY)
{
    int length;
    const char *data;
    RastOpts ropts;
    NSVGimage *nsvgImage = GetCachedSVG(interp, chan, formatObj, &ropts);

    if (nsvgImage == NULL) {
        Tcl_Obj *dataObj = Tcl_NewObj();

	if (Tcl_ReadChars(chan, dataObj, -1, 0) == -1) {
	    /* in case of an error reading the file */
	    Tcl_DecrRefCount(dataObj);
	    Tcl_SetObjResult(interp, Tcl_NewStringObj("read error", -1));
	    Tcl_SetErrorCode(interp, "TK", "IMAGE", "SVG", "READ_ERROR", NULL);
	    return TCL_ERROR;
	}
        data = Tcl_GetStringFromObj(dataObj, &length);
	nsvgImage = ParseSVGWithOptions(interp, data, length, formatObj,
			    &ropts);
	Tcl_DecrRefCount(dataObj);
	if (nsvgImage == NULL) {
	    return TCL_ERROR;
	}
    }
    return RasterizeSVG(interp, imageHandle, nsvgImage, destX, destY,
		width, height, srcX, srcY, &ropts);
}

/*
 *----------------------------------------------------------------------
 *
 * StringMatchSVG --
 *
 *	This function is invoked by the photo image type to see if a string
 *	contains image data in SVG format.
 *
 * Results:
 *	The return value is >0 if the file can be successfully parsed,
 *	and 0 otherwise.
 *
 * Side effects:
 *	The file is saved in the internal cache for further use.
 *
 *----------------------------------------------------------------------
 */

static int
StringMatchSVG(
    Tcl_Obj *dataObj,
    Tcl_Obj *formatObj,
    int *widthPtr, int *heightPtr,
    Tcl_Interp *interp)
{
    int length;
    const char *data;
    RastOpts ropts;
    NSVGimage *nsvgImage;

    CleanCache(interp);
    data = Tcl_GetStringFromObj(dataObj, &length);
    nsvgImage = ParseSVGWithOptions(interp, data, length, formatObj, &ropts);
    if (nsvgImage != NULL) {
	*widthPtr = (int) ceil(nsvgImage->width * ropts.scale);
	*heightPtr = (int) ceil(nsvgImage->height * ropts.scale);
        if ((*widthPtr <= 0) || (*heightPtr <= 0)) {
            nsvgDelete(nsvgImage);
            return 0;
        }
	if (!CacheSVG(interp, dataObj, formatObj, nsvgImage, &ropts)) {
	    nsvgDelete(nsvgImage);
	}
	return 1;
    }
    return 0;
}

/*
 *----------------------------------------------------------------------
 *
 * StringReadSVG --
 *
 *	This function is called by the photo image type to read SVG format
 *	data from a string and write it into a given photo image.
 *
 * Results:
 *	A standard TCL completion code. If TCL_ERROR is returned then an error
 *	message is left in the interp's result.
 *
 * Side effects:
 *	New data is added to the image given by imageHandle.
 *
 *----------------------------------------------------------------------
 */

static int
StringReadSVG(
    Tcl_Interp *interp,
    Tcl_Obj *dataObj,
    Tcl_Obj *formatObj,
    Tk_PhotoHandle imageHandle,
    int destX, int destY,
    int width, int height,
    int srcX, int srcY)
{
    int length;
    const char *data;
    RastOpts ropts;
    NSVGimage *nsvgImage = GetCachedSVG(interp, dataObj, formatObj, &ropts);

    if (nsvgImage == NULL) {
        data = Tcl_GetStringFromObj(dataObj, &length);
	nsvgImage = ParseSVGWithOptions(interp, data, length, formatObj,
			    &ropts);
    }
    if (nsvgImage == NULL) {
	return TCL_ERROR;
    }
    return RasterizeSVG(interp, imageHandle, nsvgImage, destX, destY,
		width, height, srcX, srcY, &ropts);
}

/*
 *----------------------------------------------------------------------
 *
 * ParseSVGWithOptions --
 *
 *	This function is called to parse the given input string as SVG.
 *
 * Results:
 *	Return a newly create NSVGimage on success, and NULL otherwise.
 *
 * Side effects:
 *
 *----------------------------------------------------------------------
 */

static NSVGimage *
ParseSVGWithOptions(
    Tcl_Interp *interp,
    const char *input,
    int length,
    Tcl_Obj *formatObj,
    RastOpts *ropts)
{
    Tcl_Obj **objv = NULL;
    int objc = 0;
    double dpi = 96.0;
    char unit[3], *p;
    char *inputCopy = NULL;
    NSVGimage *nsvgImage;
    static const char *const fmtOptions[] = {
        "-dpi", "-scale", "-unit", NULL
    };
    enum fmtOptions {
	OPT_DPI, OPT_SCALE, OPT_UNIT
    };

    /*
     * The parser destroys the original input string,
     * therefore first duplicate.
     */

    inputCopy = attemptckalloc(length+1);
    if (inputCopy == NULL) {
	Tcl_SetObjResult(interp, Tcl_NewStringObj("cannot alloc data buffer", -1));
	Tcl_SetErrorCode(interp, "TK", "IMAGE", "SVG", "OUT_OF_MEMORY", NULL);
	goto error;
    }
    memcpy(inputCopy, input, length);
    inputCopy[length] = '\0';

    /*
     * Process elements of format specification as a list.
     */

    strcpy(unit, "px");
    ropts->x = ropts->y = 0.0;
    ropts->scale = 1.0;
    if ((formatObj != NULL) &&
	    Tcl_ListObjGetElements(interp, formatObj, &objc, &objv) != TCL_OK) {
        goto error;
    }
    for (; objc > 0 ; objc--, objv++) {
	int optIndex;

	/*
	 * Ignore the "svg" part of the format specification.
	 */

	if (!strcasecmp(Tcl_GetString(objv[0]), "svg")) {
	    continue;
	}

	if (Tcl_GetIndexFromObjStruct(interp, objv[0], fmtOptions,
		sizeof(char *), "option", 0, &optIndex) == TCL_ERROR) {
	    goto error;
	}

	if (objc < 2) {
	    ckfree(inputCopy);
	    inputCopy = NULL;
	    Tcl_WrongNumArgs(interp, 1, objv, "value");
	    goto error;
	}

	objc--;
	objv++;

	switch ((enum fmtOptions) optIndex) {
	case OPT_DPI:
	    if (Tcl_GetDoubleFromObj(interp, objv[0], &dpi) == TCL_ERROR) {
	        goto error;
	    }
	    if (dpi < 0.0) {
		Tcl_SetObjResult(interp, Tcl_NewStringObj(
			"-dpi value must be positive", -1));
		Tcl_SetErrorCode(interp, "TK", "IMAGE", "SVG", "BAD_DPI",
			NULL);
		goto error;
	    }
	    break;
	case OPT_SCALE:
	    if (Tcl_GetDoubleFromObj(interp, objv[0], &ropts->scale) ==
		TCL_ERROR) {
	        goto error;
	    }
	    if (ropts->scale <= 0.0) {
		Tcl_SetObjResult(interp, Tcl_NewStringObj(
			"-scale value must be positive", -1));
		Tcl_SetErrorCode(interp, "TK", "IMAGE", "SVG", "BAD_SCALE",
			NULL);
		goto error;
	    }
	    break;
	case OPT_UNIT:
	    p = Tcl_GetString(objv[0]);
	    if ((p != NULL) && (p[0])) {
	        strncpy(unit, p, 3);
		unit[2] = '\0';
	    }
	    break;
	}
    }

    nsvgImage = nsvgParse(inputCopy, unit, (float) dpi);
    if (nsvgImage == NULL) {
	Tcl_SetObjResult(interp, Tcl_NewStringObj("cannot parse SVG image", -1));
	Tcl_SetErrorCode(interp, "TK", "IMAGE", "SVG", "PARSE_ERROR", NULL);
	goto error;
    }
    ckfree(inputCopy);
    return nsvgImage;

error:
    if (inputCopy != NULL) {
        ckfree(inputCopy);
    }
    return NULL;
}

/*
 *----------------------------------------------------------------------
 *
 * RasterizeSVG --
 *
 *	This function is called to rasterize the given nsvgImage and
 *	fill the imageHandle with data.
 *
 * Results:
 *	A standard TCL completion code. If TCL_ERROR is returned then an error
 *	message is left in the interp's result.
 *
 *
 * Side effects:
 *	On error the given nsvgImage will be deleted.
 *
 *----------------------------------------------------------------------
 */

static int
RasterizeSVG(
    Tcl_Interp *interp,
    Tk_PhotoHandle imageHandle,
    NSVGimage *nsvgImage,
    int destX, int destY,
    int width, int height,
    int srcX, int srcY,
    RastOpts *ropts)
{
    int w, h, c;
    NSVGrasterizer *rast;
    unsigned char *imgData;
    Tk_PhotoImageBlock svgblock;

    w = (int) ceil(nsvgImage->width * ropts->scale);
    h = (int) ceil(nsvgImage->height * ropts->scale);
    rast = nsvgCreateRasterizer();
    if (rast == NULL) {
	Tcl_SetObjResult(interp, Tcl_NewStringObj("cannot initialize rasterizer", -1));
	Tcl_SetErrorCode(interp, "TK", "IMAGE", "SVG", "RASTERIZER_ERROR",
		NULL);
	goto cleanAST;
    }
    imgData = attemptckalloc(w * h *4);
    if (imgData == NULL) {
	Tcl_SetObjResult(interp, Tcl_NewStringObj("cannot alloc image buffer", -1));
	Tcl_SetErrorCode(interp, "TK", "IMAGE", "SVG", "OUT_OF_MEMORY", NULL);
	goto cleanRAST;
    }
    nsvgRasterize(rast, nsvgImage, (float) ropts->x, (float) ropts->y,
	    (float) ropts->scale, imgData, w, h, w * 4);
    /* transfer the data to a photo block */
    svgblock.pixelPtr = imgData;
    svgblock.width = w;
    svgblock.height = h;
    svgblock.pitch = w * 4;
    svgblock.pixelSize = 4;
    for (c = 0; c <= 3; c++) {
	svgblock.offset[c] = c;
    }
    if (Tk_PhotoExpand(interp, imageHandle,
		destX + width, destY + height) != TCL_OK) {
	goto cleanRAST;
    }
    if (Tk_PhotoPutBlock(interp, imageHandle, &svgblock, destX, destY,
		width, height, TK_PHOTO_COMPOSITE_SET) != TCL_OK) {
	goto cleanimg;
    }
    ckfree(imgData);
    nsvgDeleteRasterizer(rast);
    nsvgDelete(nsvgImage);
    return TCL_OK;

cleanimg:
    ckfree(imgData);

cleanRAST:
    nsvgDeleteRasterizer(rast);

cleanAST:
    nsvgDelete(nsvgImage);
    return TCL_ERROR;
}

/*
 *----------------------------------------------------------------------
 *
 * GetCachePtr --
 *
 *	This function is called to get the per interpreter used
 *	svg image cache.
 *
 * Results:
 * 	Return a pointer to the used cache.
 *
 * Side effects:
 *	Initialize the cache on the first call.
 *
 *----------------------------------------------------------------------
 */

static NSVGcache *
GetCachePtr(
    Tcl_Interp *interp
) {
    NSVGcache *cachePtr = Tcl_GetAssocData(interp, "tksvgnano", NULL);
    if (cachePtr == NULL) {
	cachePtr = ckalloc(sizeof(NSVGcache));
	cachePtr->dataOrChan = NULL;
	Tcl_DStringInit(&cachePtr->formatString);
	cachePtr->nsvgImage = NULL;
	Tcl_SetAssocData(interp, "tksvgnano", FreeCache, cachePtr);
    }
    return cachePtr;
}

/*
 *----------------------------------------------------------------------
 *
 * CacheSVG --
 *
 *	Add the given svg image informations to the cache for further usage.
 *
 * Results:
 *	Return 1 on success, and 0 otherwise.
 *
 * Side effects:
 *
 *----------------------------------------------------------------------
 */

static int
CacheSVG(
    Tcl_Interp *interp,
    ClientData dataOrChan,
    Tcl_Obj *formatObj,
    NSVGimage *nsvgImage,
    RastOpts *ropts)
{
    int length;
    const char *data;
    NSVGcache *cachePtr = GetCachePtr(interp);

    if (cachePtr != NULL) {
        cachePtr->dataOrChan = dataOrChan;
	if (formatObj != NULL) {
	    data = Tcl_GetStringFromObj(formatObj, &length);
	    Tcl_DStringAppend(&cachePtr->formatString, data, length);
	}
	cachePtr->nsvgImage = nsvgImage;
	cachePtr->ropts = *ropts;
	return 1;
    }
    return 0;
}

/*
 *----------------------------------------------------------------------
 *
 * GetCachedSVG --
 *
 *	Try to get the NSVGimage from the internal cache.
 *
 * Results:
 *	Return the found NSVGimage on success, and NULL otherwise.
 *
 * Side effects:
 *	Calls the CleanCache() function.
 *
 *----------------------------------------------------------------------
 */

static NSVGimage *
GetCachedSVG(
    Tcl_Interp *interp,
    ClientData dataOrChan,
    Tcl_Obj *formatObj,
    RastOpts *ropts)
{
    int length;
    const char *data;
    NSVGcache *cachePtr = GetCachePtr(interp);
    NSVGimage *nsvgImage = NULL;

    if ((cachePtr != NULL) && (cachePtr->nsvgImage != NULL) &&
	(cachePtr->dataOrChan == dataOrChan)) {
        if (formatObj != NULL) {
	    data = Tcl_GetStringFromObj(formatObj, &length);
	    if (strcmp(data, Tcl_DStringValue(&cachePtr->formatString)) == 0) {
	        nsvgImage = cachePtr->nsvgImage;
		*ropts = cachePtr->ropts;
		cachePtr->nsvgImage = NULL;
	    }
	} else if (Tcl_DStringLength(&cachePtr->formatString) == 0) {
	    nsvgImage = cachePtr->nsvgImage;
	    *ropts = cachePtr->ropts;
	    cachePtr->nsvgImage = NULL;
	}
    }
    CleanCache(interp);
    return nsvgImage;
}

/*
 *----------------------------------------------------------------------
 *
 * CleanCache --
 *
 *	Reset the cache and delete the saved image in it.
 *
 * Results:
 *
 * Side effects:
 *
 *----------------------------------------------------------------------
 */

static void
CleanCache(Tcl_Interp *interp)
{
    NSVGcache *cachePtr = GetCachePtr(interp);

    if (cachePtr != NULL) {
        cachePtr->dataOrChan = NULL;
        Tcl_DStringSetLength(&cachePtr->formatString, 0);
	if (cachePtr->nsvgImage != NULL) {
	    nsvgDelete(cachePtr->nsvgImage);
	    cachePtr->nsvgImage = NULL;
	}
    }
}

/*
 *----------------------------------------------------------------------
 *
 * FreeCache --
 *
 *	This function is called to clean up the internal cache data.
 *
 * Results:
 *
 * Side effects:
 *	Existing image data in the cache and the cache will be deleted.
 *
 *----------------------------------------------------------------------
 */

static void
FreeCache(ClientData clientData, Tcl_Interp *interp)
{
    NSVGcache *cachePtr = clientData;

    Tcl_DStringFree(&cachePtr->formatString);
    if (cachePtr->nsvgImage != NULL) {
        nsvgDelete(cachePtr->nsvgImage);
    }
    ckfree(cachePtr);
}

Changes to generic/tkInt.h.

982
983
984
985
986
987
988

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990
991
992
993
994
995
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1257
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1263


1264
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1267
1268



1269
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1274
1275
MODULE_SCOPE const Tk_SmoothMethod tkBezierSmoothMethod;
MODULE_SCOPE Tk_ImageType	tkBitmapImageType;
MODULE_SCOPE Tk_PhotoImageFormat tkImgFmtGIF;
MODULE_SCOPE void		(*tkHandleEventProc) (XEvent* eventPtr);
MODULE_SCOPE Tk_PhotoImageFormat tkImgFmtDefault;
MODULE_SCOPE Tk_PhotoImageFormat tkImgFmtPNG;
MODULE_SCOPE Tk_PhotoImageFormat tkImgFmtPPM;

MODULE_SCOPE TkMainInfo		*tkMainWindowList;
MODULE_SCOPE Tk_ImageType	tkPhotoImageType;
MODULE_SCOPE Tcl_HashTable	tkPredefBitmapTable;

MODULE_SCOPE const char *const tkWebColors[20];

/*
................................................................................
MODULE_SCOPE Tcl_Command TkMakeEnsemble(Tcl_Interp *interp,
			    const char *nsname, const char *name,
			    ClientData clientData, const TkEnsemble *map);
MODULE_SCOPE int	TkInitTkCmd(Tcl_Interp *interp,
			    ClientData clientData);
MODULE_SCOPE int	TkInitFontchooser(Tcl_Interp *interp,
			    ClientData clientData);


MODULE_SCOPE void	TkpWarpPointer(TkDisplay *dispPtr);
MODULE_SCOPE void	TkpCancelWarp(TkDisplay *dispPtr);
MODULE_SCOPE int	TkListCreateFrame(ClientData clientData,
			    Tcl_Interp *interp, Tcl_Obj *listObj,
			    int toplevel, Tcl_Obj *nameObj);




#ifdef _WIN32
#define TkParseColor XParseColor
#else
MODULE_SCOPE Status TkParseColor (Display * display,
				Colormap map, const char* spec,
				XColor * colorPtr);






>







 







>
>





>
>
>







982
983
984
985
986
987
988
989
990
991
992
993
994
995
996
....
1258
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1260
1261
1262
1263
1264
1265
1266
1267
1268
1269
1270
1271
1272
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1274
1275
1276
1277
1278
1279
1280
1281
MODULE_SCOPE const Tk_SmoothMethod tkBezierSmoothMethod;
MODULE_SCOPE Tk_ImageType	tkBitmapImageType;
MODULE_SCOPE Tk_PhotoImageFormat tkImgFmtGIF;
MODULE_SCOPE void		(*tkHandleEventProc) (XEvent* eventPtr);
MODULE_SCOPE Tk_PhotoImageFormat tkImgFmtDefault;
MODULE_SCOPE Tk_PhotoImageFormat tkImgFmtPNG;
MODULE_SCOPE Tk_PhotoImageFormat tkImgFmtPPM;
MODULE_SCOPE Tk_PhotoImageFormat tkImgFmtSVGnano;
MODULE_SCOPE TkMainInfo		*tkMainWindowList;
MODULE_SCOPE Tk_ImageType	tkPhotoImageType;
MODULE_SCOPE Tcl_HashTable	tkPredefBitmapTable;

MODULE_SCOPE const char *const tkWebColors[20];

/*
................................................................................
MODULE_SCOPE Tcl_Command TkMakeEnsemble(Tcl_Interp *interp,
			    const char *nsname, const char *name,
			    ClientData clientData, const TkEnsemble *map);
MODULE_SCOPE int	TkInitTkCmd(Tcl_Interp *interp,
			    ClientData clientData);
MODULE_SCOPE int	TkInitFontchooser(Tcl_Interp *interp,
			    ClientData clientData);
MODULE_SCOPE void	TkInitEmbeddedConfigurationInformation(
			    Tcl_Interp *interp);
MODULE_SCOPE void	TkpWarpPointer(TkDisplay *dispPtr);
MODULE_SCOPE void	TkpCancelWarp(TkDisplay *dispPtr);
MODULE_SCOPE int	TkListCreateFrame(ClientData clientData,
			    Tcl_Interp *interp, Tcl_Obj *listObj,
			    int toplevel, Tcl_Obj *nameObj);
MODULE_SCOPE void	TkRotatePoint(double originX, double originY,
			    double sine, double cosine, double *xPtr,
			    double *yPtr);

#ifdef _WIN32
#define TkParseColor XParseColor
#else
MODULE_SCOPE Status TkParseColor (Display * display,
				Colormap map, const char* spec,
				XColor * colorPtr);

Changes to generic/tkListbox.c.

3433
3434
3435
3436
3437
3438
3439
3440
3441
3442
3443
3444
3445
3446
3447
3448
3449
3450
3451
3452
3453
3454
3455
3456
3457
3458
3459
3460
3461
3462
3463
3464
3465
3466
3467






















3468
3469
3470
3471
3472
3473
3474
 *----------------------------------------------------------------------
 */

static char *
ListboxListVarProc(
    ClientData clientData,	/* Information about button. */
    Tcl_Interp *interp,		/* Interpreter containing variable. */
    const char *name1,		/* Name of variable. */
    const char *name2,		/* Second part of variable name. */
    int flags)			/* Information about what happened. */
{
    Listbox *listPtr = clientData;
    Tcl_Obj *oldListObj, *varListObj;
    int oldLength, i;
    Tcl_HashEntry *entry;

    /*
     * See ticket [5d991b82].
     */

    if (listPtr->listVarName == NULL) {
	if (!(flags & TCL_INTERP_DESTROYED)) {
	    Tcl_UntraceVar2(interp, name1, name2,
		    TCL_GLOBAL_ONLY|TCL_TRACE_WRITES|TCL_TRACE_UNSETS,
		    ListboxListVarProc, clientData);
	}
	return NULL;
    }

    /*
     * Bwah hahahaha! Puny mortal, you can't unset a -listvar'd variable!
     */

    if (flags & TCL_TRACE_UNSETS) {
	if ((flags & TCL_TRACE_DESTROYED) && !(flags & TCL_INTERP_DESTROYED)) {






















	    Tcl_SetVar2Ex(interp, listPtr->listVarName, NULL,
		    listPtr->listObj, TCL_GLOBAL_ONLY);
	    Tcl_TraceVar2(interp, listPtr->listVarName,
		    NULL, TCL_GLOBAL_ONLY|TCL_TRACE_WRITES|TCL_TRACE_UNSETS,
		    ListboxListVarProc, clientData);
	    return NULL;
	}






|
|







<
<
<
<
<
<
<
<
<
<
<
<
<





<
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>







3433
3434
3435
3436
3437
3438
3439
3440
3441
3442
3443
3444
3445
3446
3447
3448













3449
3450
3451
3452
3453

3454
3455
3456
3457
3458
3459
3460
3461
3462
3463
3464
3465
3466
3467
3468
3469
3470
3471
3472
3473
3474
3475
3476
3477
3478
3479
3480
3481
3482
 *----------------------------------------------------------------------
 */

static char *
ListboxListVarProc(
    ClientData clientData,	/* Information about button. */
    Tcl_Interp *interp,		/* Interpreter containing variable. */
    const char *name1,		/* Not used. */
    const char *name2,		/* Not used. */
    int flags)			/* Information about what happened. */
{
    Listbox *listPtr = clientData;
    Tcl_Obj *oldListObj, *varListObj;
    int oldLength, i;
    Tcl_HashEntry *entry;














    /*
     * Bwah hahahaha! Puny mortal, you can't unset a -listvar'd variable!
     */

    if (flags & TCL_TRACE_UNSETS) {


        if (!Tcl_InterpDeleted(interp) && listPtr->listVarName) {
            ClientData probe = NULL;

            do {
                probe = Tcl_VarTraceInfo(interp,
                        listPtr->listVarName,
                        TCL_GLOBAL_ONLY|TCL_TRACE_WRITES|TCL_TRACE_UNSETS,
                        ListboxListVarProc, probe);
                if (probe == (ClientData)listPtr) {
                    break;
                }
            } while (probe);
            if (probe) {
                /*
                 * We were able to fetch the unset trace for our
                 * listVarName, which means it is not unset and not
                 * the cause of this unset trace. Instead some outdated
                 * former variable must be, and we should ignore it.
                 */
                return NULL;
            }
	    Tcl_SetVar2Ex(interp, listPtr->listVarName, NULL,
		    listPtr->listObj, TCL_GLOBAL_ONLY);
	    Tcl_TraceVar2(interp, listPtr->listVarName,
		    NULL, TCL_GLOBAL_ONLY|TCL_TRACE_WRITES|TCL_TRACE_UNSETS,
		    ListboxListVarProc, clientData);
	    return NULL;
	}

Changes to generic/tkMenu.c.

2488
2489
2490
2491
2492
2493
2494
2495
2496
2497

2498
2499
2500
2501
2502
2503
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2505
2506
2507
2508
2509
2510
2511
2512
2513
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2515
2516
2517
2518
2519
2520
2521
2522
2523
2524
2525
2526

2527
2528


2529
2530
2531


2532













2533
2534
2535
2536
2537
2538
2539
    int flags)			/* Describes what just happened. */
{
    TkMenuEntry *mePtr = clientData;
    TkMenu *menuPtr;
    const char *value;
    const char *name, *onValue;

    if (flags & TCL_INTERP_DESTROYED) {
	/*
	 * Do nothing if the interpreter is going away.

	 */

    	return NULL;
    }

    menuPtr = mePtr->menuPtr;

    if (menuPtr->menuFlags & MENU_DELETION_PENDING) {
    	return NULL;
    }

    /*
     * See ticket [5d991b82].
     */

    if (mePtr->namePtr == NULL) {
	Tcl_UntraceVar2(interp, name1, name2,
		TCL_GLOBAL_ONLY|TCL_TRACE_WRITES|TCL_TRACE_UNSETS,
		MenuVarProc, clientData);
	return NULL;
     }

    name = Tcl_GetString(mePtr->namePtr);

    /*
     * If the variable is being unset, then re-establish the trace.
     */

    if (flags & TCL_TRACE_UNSETS) {

	mePtr->entryFlags &= ~ENTRY_SELECTED;
	if (flags & TCL_TRACE_DESTROYED) {


	    Tcl_TraceVar2(interp, name, NULL,
		    TCL_GLOBAL_ONLY|TCL_TRACE_WRITES|TCL_TRACE_UNSETS,
		    MenuVarProc, clientData);


	}













	TkpConfigureMenuEntry(mePtr);
	TkEventuallyRedrawMenu(menuPtr, NULL);
	return NULL;
    }

    /*
     * Use the value of the variable to update the selected status of the menu






|

|
>











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<
<
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>

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>







2488
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2501
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2504
2505
2506
2507
2508
2509











2510
2511
2512
2513
2514
2515
2516
2517
2518

2519
2520
2521
2522
2523
2524
2525
2526
2527
2528
2529
2530
2531
2532
2533
2534
2535
2536
2537
2538
2539
2540
2541
2542
2543
2544
2545
2546
    int flags)			/* Describes what just happened. */
{
    TkMenuEntry *mePtr = clientData;
    TkMenu *menuPtr;
    const char *value;
    const char *name, *onValue;

    if (Tcl_InterpDeleted(interp) || (mePtr->namePtr == NULL)) {
	/*
	 * Do nothing if the interpreter is going away or we have
	 * no variable name.
	 */

    	return NULL;
    }

    menuPtr = mePtr->menuPtr;

    if (menuPtr->menuFlags & MENU_DELETION_PENDING) {
    	return NULL;
    }












    name = Tcl_GetString(mePtr->namePtr);

    /*
     * If the variable is being unset, then re-establish the trace.
     */

    if (flags & TCL_TRACE_UNSETS) {
        ClientData probe = NULL;
	mePtr->entryFlags &= ~ENTRY_SELECTED;


        do {
                probe = Tcl_VarTraceInfo(interp, name,
                        TCL_GLOBAL_ONLY|TCL_TRACE_WRITES|TCL_TRACE_UNSETS,
                        MenuVarProc, probe);
                if (probe == (ClientData)mePtr) {
                    break;
                }
        } while (probe);
        if (probe) {
                /*
                 * We were able to fetch the unset trace for our
                 * namePtr, which means it is not unset and not
                 * the cause of this unset trace. Instead some outdated
                 * former variable must be, and we should ignore it.
                 */
		return NULL;
        }
	Tcl_TraceVar2(interp, name, NULL,
		TCL_GLOBAL_ONLY|TCL_TRACE_WRITES|TCL_TRACE_UNSETS,
		MenuVarProc, clientData);
	TkpConfigureMenuEntry(mePtr);
	TkEventuallyRedrawMenu(menuPtr, NULL);
	return NULL;
    }

    /*
     * Use the value of the variable to update the selected status of the menu

Changes to generic/tkMenuDraw.c.

471
472
473
474
475
476
477
478
479
480
481
482
483
484
485
 *	Arrange for an entry of a menu, or the whole menu, to be redisplayed
 *	at some point in the future.
 *
 * Results:
 *	None.
 *
 * Side effects:
 *	A when-idle hander is scheduled to do the redisplay, if there isn't
 *	one already scheduled.
 *
 *----------------------------------------------------------------------
 */

void
TkEventuallyRedrawMenu(






|







471
472
473
474
475
476
477
478
479
480
481
482
483
484
485
 *	Arrange for an entry of a menu, or the whole menu, to be redisplayed
 *	at some point in the future.
 *
 * Results:
 *	None.
 *
 * Side effects:
 *	A when-idle handler is scheduled to do the redisplay, if there isn't
 *	one already scheduled.
 *
 *----------------------------------------------------------------------
 */

void
TkEventuallyRedrawMenu(

Changes to generic/tkMenubutton.c.

877
878
879
880
881
882
883
884
885
886
887
888
889
890
891
892
893
894
895
896
897
898
899
900
901
902
903




















904
905
906
907
908
909
910
    const char *name2,		/* Second part of variable name. */
    int flags)			/* Information about what happened. */
{
    register TkMenuButton *mbPtr = clientData;
    const char *value;
    unsigned len;

    /*
     * See ticket [5d991b82].
     */

    if (mbPtr->textVarName == NULL) {
	if (!(flags & TCL_INTERP_DESTROYED)) {
	    Tcl_UntraceVar2(interp, name1, name2,
		    TCL_GLOBAL_ONLY|TCL_TRACE_WRITES|TCL_TRACE_UNSETS,
		    MenuButtonTextVarProc, clientData);
	}
	return NULL;
    }

    /*
     * If the variable is unset, then immediately recreate it unless the whole
     * interpreter is going away.
     */

    if (flags & TCL_TRACE_UNSETS) {
	if ((flags & TCL_TRACE_DESTROYED) && !(flags & TCL_INTERP_DESTROYED)) {




















	    Tcl_SetVar2(interp, mbPtr->textVarName, NULL, mbPtr->text,
		    TCL_GLOBAL_ONLY);
	    Tcl_TraceVar2(interp, mbPtr->textVarName, NULL,
		    TCL_GLOBAL_ONLY|TCL_TRACE_WRITES|TCL_TRACE_UNSETS,
		    MenuButtonTextVarProc, clientData);
	}
	return NULL;






<
<
<
<
<
<
<
<
<
<
<
<
<






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>
>
>
>
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>
>
>
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>
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>
>
>
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>







877
878
879
880
881
882
883













884
885
886
887
888
889
890
891
892
893
894
895
896
897
898
899
900
901
902
903
904
905
906
907
908
909
910
911
912
913
914
915
916
917
    const char *name2,		/* Second part of variable name. */
    int flags)			/* Information about what happened. */
{
    register TkMenuButton *mbPtr = clientData;
    const char *value;
    unsigned len;














    /*
     * If the variable is unset, then immediately recreate it unless the whole
     * interpreter is going away.
     */

    if (flags & TCL_TRACE_UNSETS) {
        if (!Tcl_InterpDeleted(interp) && mbPtr->textVarName) {
            ClientData probe = NULL;

            do {
                probe = Tcl_VarTraceInfo(interp,
                        mbPtr->textVarName,
                        TCL_GLOBAL_ONLY|TCL_TRACE_WRITES|TCL_TRACE_UNSETS,
                        MenuButtonTextVarProc, probe);
                if (probe == (ClientData)mbPtr) {
                    break;
                }
            } while (probe);
            if (probe) {
                /*
                 * We were able to fetch the unset trace for our
                 * textVarName, which means it is not unset and not
                 * the cause of this unset trace. Instead some outdated
                 * former variable must be, and we should ignore it.
                 */
                return NULL;
            }
	    Tcl_SetVar2(interp, mbPtr->textVarName, NULL, mbPtr->text,
		    TCL_GLOBAL_ONLY);
	    Tcl_TraceVar2(interp, mbPtr->textVarName, NULL,
		    TCL_GLOBAL_ONLY|TCL_TRACE_WRITES|TCL_TRACE_UNSETS,
		    MenuButtonTextVarProc, clientData);
	}
	return NULL;

Changes to generic/tkMessage.c.

834
835
836
837
838
839
840
841
842
843
844
845
846
847
848
849
850
851
852
853
854
855
856
857
858
859
860




















861
862
863
864
865
866
867
    const char *name1,		/* Name of variable. */
    const char *name2,		/* Second part of variable name. */
    int flags)			/* Information about what happened. */
{
    register Message *msgPtr = clientData;
    const char *value;

    /*
     * See ticket [5d991b82].
     */

    if (msgPtr->textVarName == NULL) {
	if (!(flags & TCL_INTERP_DESTROYED)) {
	    Tcl_UntraceVar2(interp, name1, name2,
		    TCL_GLOBAL_ONLY|TCL_TRACE_WRITES|TCL_TRACE_UNSETS,
		    MessageTextVarProc, clientData);
	}
	return NULL;
    }

    /*
     * If the variable is unset, then immediately recreate it unless the whole
     * interpreter is going away.
     */

    if (flags & TCL_TRACE_UNSETS) {
	if ((flags & TCL_TRACE_DESTROYED) && !(flags & TCL_INTERP_DESTROYED)) {




















	    Tcl_SetVar2(interp, msgPtr->textVarName, NULL, msgPtr->string,
		    TCL_GLOBAL_ONLY);
	    Tcl_TraceVar2(interp, msgPtr->textVarName, NULL,
		    TCL_GLOBAL_ONLY|TCL_TRACE_WRITES|TCL_TRACE_UNSETS,
		    MessageTextVarProc, clientData);
	}
	return NULL;






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    const char *name1,		/* Name of variable. */
    const char *name2,		/* Second part of variable name. */
    int flags)			/* Information about what happened. */
{
    register Message *msgPtr = clientData;
    const char *value;














    /*
     * If the variable is unset, then immediately recreate it unless the whole
     * interpreter is going away.
     */

    if (flags & TCL_TRACE_UNSETS) {
        if (!Tcl_InterpDeleted(interp) && msgPtr->textVarName) {
            ClientData probe = NULL;

            do {
                probe = Tcl_VarTraceInfo(interp,
                        msgPtr->textVarName,
                        TCL_GLOBAL_ONLY|TCL_TRACE_WRITES|TCL_TRACE_UNSETS,
                        MessageTextVarProc, probe);
                if (probe == (ClientData)msgPtr) {
                    break;
                }
            } while (probe);
            if (probe) {
                /*
                 * We were able to fetch the unset trace for our
                 * textVarName, which means it is not unset and not
                 * the cause of this unset trace. Instead some outdated
                 * former variable must be, and we should ignore it.
                 */
                return NULL;
            }
	    Tcl_SetVar2(interp, msgPtr->textVarName, NULL, msgPtr->string,
		    TCL_GLOBAL_ONLY);
	    Tcl_TraceVar2(interp, msgPtr->textVarName, NULL,
		    TCL_GLOBAL_ONLY|TCL_TRACE_WRITES|TCL_TRACE_UNSETS,
		    MessageTextVarProc, clientData);
	}
	return NULL;

Added generic/tkPkgConfig.c.












































































































































































































































































































































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/*
 * tkPkgConfig.c --
 *
 *	This file contains the configuration information to embed into the tcl
 *	binary library.
 *
 * Copyright (c) 2002 Andreas Kupries <[email protected]>
 * Copyright (c) 2017 Stuart Cassoff <[email protected]>
 *
 * See the file "license.terms" for information on usage and redistribution of
 * this file, and for a DISCLAIMER OF ALL WARRANTIES.
 */

/* Note, the definitions in this module are influenced by the following C
 * preprocessor macros:
 *
 * OSCMa  = shortcut for "old style configuration macro activates"
 * NSCMdt = shortcut for "new style configuration macro declares that"
 *
 * - TCL_THREADS		OSCMa compilation as threaded.
 * - TCL_MEM_DEBUG		OSCMa memory debugging.
 *
 * - TCL_CFG_DO64BIT		NSCMdt tk is compiled for a 64bit system.
 * - NDEBUG			NSCMdt tk is compiled with symbol info off.
 * - TCL_CFG_OPTIMIZED		NSCMdt tk is compiled with cc optimizations on
 * - TCL_CFG_PROFILED		NSCMdt tk is compiled with profiling info.
 *
 * - _WIN32 || __CYGWIN__	The value for the fontsytem key will be
 *   MAC_OSX_TK			chosen based on these macros/defines.
 *   HAVE_XFT			NSCMdt xft font support was requested.
 *
 * - CFG_RUNTIME_*		Paths to various stuff at runtime.
 * - CFG_INSTALL_*		Paths to various stuff at installation time.
 *
 * - TCL_CFGVAL_ENCODING	string containing the encoding used for the
 *				configuration values.
 */

#include "tkInt.h"
 

#ifndef TCL_CFGVAL_ENCODING
#define TCL_CFGVAL_ENCODING "ascii"
#endif

/*
 * Use C preprocessor statements to define the various values for the embedded
 * configuration information.
 */

#ifdef TCL_THREADS
#  define  CFG_THREADED		"1"
#else
#  define  CFG_THREADED		"0"
#endif

#ifdef TCL_MEM_DEBUG
#  define CFG_MEMDEBUG		"1"
#else
#  define CFG_MEMDEBUG		"0"
#endif

#ifdef TCL_CFG_DO64BIT
#  define CFG_64		"1"
#else
#  define CFG_64		"0"
#endif

#ifndef NDEBUG
#  define CFG_DEBUG		"1"
#else
#  define CFG_DEBUG		"0"
#endif

#ifdef TCL_CFG_OPTIMIZED
#  define CFG_OPTIMIZED		"1"
#else
#  define CFG_OPTIMIZED		"0"
#endif

#ifdef TCL_CFG_PROFILED
#  define CFG_PROFILED		"1"
#else
#  define CFG_PROFILED		"0"
#endif

#if defined(_WIN32) || defined(__CYGWIN__)
#  define CFG_FONTSYSTEM	"gdi"
#elif defined(MAC_OSX_TK)
#  define CFG_FONTSYSTEM	"cocoa"
#elif defined(HAVE_XFT)
#  define CFG_FONTSYSTEM	"xft"
#else
#  define CFG_FONTSYSTEM	"x11"
#endif

static Tcl_Config const cfg[] = {
    {"debug",			CFG_DEBUG},
    {"threaded",		CFG_THREADED},
    {"profiled",		CFG_PROFILED},
    {"64bit",			CFG_64},
    {"optimized",		CFG_OPTIMIZED},
    {"mem_debug",		CFG_MEMDEBUG},
    {"fontsystem",		CFG_FONTSYSTEM},

    /* Runtime paths to various stuff */

#ifdef CFG_RUNTIME_LIBDIR
    {"libdir,runtime",		CFG_RUNTIME_LIBDIR},
#endif
#ifdef CFG_RUNTIME_BINDIR
    {"bindir,runtime",		CFG_RUNTIME_BINDIR},
#endif
#ifdef CFG_RUNTIME_SCRDIR
    {"scriptdir,runtime",	CFG_RUNTIME_SCRDIR},
#endif
#ifdef CFG_RUNTIME_INCDIR
    {"includedir,runtime",	CFG_RUNTIME_INCDIR},
#endif
#ifdef CFG_RUNTIME_DOCDIR
    {"docdir,runtime",		CFG_RUNTIME_DOCDIR},
#endif
#ifdef CFG_RUNTIME_DEMODIR
    {"demodir,runtime",		CFG_RUNTIME_DEMODIR},
#endif

    /* Installation paths to various stuff */

#ifdef CFG_INSTALL_LIBDIR
    {"libdir,install",		CFG_INSTALL_LIBDIR},
#endif
#ifdef CFG_INSTALL_BINDIR
    {"bindir,install",		CFG_INSTALL_BINDIR},
#endif
#ifdef CFG_INSTALL_SCRDIR
    {"scriptdir,install",	CFG_INSTALL_SCRDIR},
#endif
#ifdef CFG_INSTALL_INCDIR
    {"includedir,install",	CFG_INSTALL_INCDIR},
#endif
#ifdef CFG_INSTALL_DOCDIR
    {"docdir,install",		CFG_INSTALL_DOCDIR},
#endif
#ifdef CFG_INSTALL_DEMODIR
    {"demodir,install",		CFG_INSTALL_DEMODIR},
#endif

    /* Last entry, closes the array */
    {NULL, NULL}
};
 
void
TkInitEmbeddedConfigurationInformation(
    Tcl_Interp *interp)		/* Interpreter the configuration command is
				 * registered in. */
{
    Tcl_RegisterConfig(interp, "tk", cfg, TCL_CFGVAL_ENCODING);
}
 
/*
 * Local Variables:
 * mode: c
 * c-basic-offset: 4
 * fill-column: 78
 * End:
 */

Changes to generic/tkPlace.c.

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	if (slavePtr->tkwin == tkwin) {
	    Tcl_SetObjResult(interp, Tcl_ObjPrintf(
		    "can't place %s relative to itself",
		    Tk_PathName(slavePtr->tkwin)));
	    Tcl_SetErrorCode(interp, "TK", "GEOMETRY", "LOOP", NULL);
	    goto error;
	}
	
	/*
	 * Check for management loops.
	 */

	for (master = (TkWindow *)tkwin; master != NULL;
	     master = (TkWindow *)TkGetGeomMaster(master)) {
	    if (master == (TkWindow *)slavePtr->tkwin) {






|







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	if (slavePtr->tkwin == tkwin) {
	    Tcl_SetObjResult(interp, Tcl_ObjPrintf(
		    "can't place %s relative to itself",
		    Tk_PathName(slavePtr->tkwin)));
	    Tcl_SetErrorCode(interp, "TK", "GEOMETRY", "LOOP", NULL);
	    goto error;
	}

	/*
	 * Check for management loops.
	 */

	for (master = (TkWindow *)tkwin; master != NULL;
	     master = (TkWindow *)TkGetGeomMaster(master)) {
	    if (master == (TkWindow *)slavePtr->tkwin) {

Changes to generic/tkRectOval.c.

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			    Tk_Item *itemPtr, int objc, Tcl_Obj *const objv[]);
static int		RectOvalToPostscript(Tcl_Interp *interp,
			    Tk_Canvas canvas, Tk_Item *itemPtr, int prepass);
static int		RectToArea(Tk_Canvas canvas, Tk_Item *itemPtr,
			    double *areaPtr);
static double		RectToPoint(Tk_Canvas canvas, Tk_Item *itemPtr,
			    double *pointPtr);


static void		ScaleRectOval(Tk_Canvas canvas, Tk_Item *itemPtr,
			    double originX, double originY,
			    double scaleX, double scaleY);
static void		TranslateRectOval(Tk_Canvas canvas, Tk_Item *itemPtr,
			    double deltaX, double deltaY);

/*
................................................................................
    TranslateRectOval,		/* translateProc */
    NULL,			/* indexProc */
    NULL,			/* icursorProc */
    NULL,			/* selectionProc */
    NULL,			/* insertProc */
    NULL,			/* dTextProc */
    NULL,			/* nextPtr */

    NULL, 0, NULL, NULL
};

Tk_ItemType tkOvalType = {
    "oval",			/* name */
    sizeof(RectOvalItem),	/* itemSize */
    CreateRectOval,		/* createProc */
    configSpecs,		/* configSpecs */
................................................................................
    TranslateRectOval,		/* translateProc */
    NULL,			/* indexProc */
    NULL,			/* cursorProc */
    NULL,			/* selectionProc */
    NULL,			/* insertProc */
    NULL,			/* dTextProc */
    NULL,			/* nextPtr */

    NULL, 0, NULL, NULL
};
 
/*
 *--------------------------------------------------------------
 *
 * CreateRectOval --
 *
................................................................................
		&& ((xDelta2 + yDelta1) < 1.0)
		&& ((xDelta2 + yDelta2) < 1.0)) {
	    return -1;
	}
    }
    return result;
}



















































 
/*
 *--------------------------------------------------------------
 *
 * ScaleRectOval --
 *
 *	This function is invoked to rescale a rectangle or oval item.






>
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1345
			    Tk_Item *itemPtr, int objc, Tcl_Obj *const objv[]);
static int		RectOvalToPostscript(Tcl_Interp *interp,
			    Tk_Canvas canvas, Tk_Item *itemPtr, int prepass);
static int		RectToArea(Tk_Canvas canvas, Tk_Item *itemPtr,
			    double *areaPtr);
static double		RectToPoint(Tk_Canvas canvas, Tk_Item *itemPtr,
			    double *pointPtr);
static void		RotateRectOval(Tk_Canvas canvas, Tk_Item *itemPtr,
			    double originX, double originY, double angleRad);
static void		ScaleRectOval(Tk_Canvas canvas, Tk_Item *itemPtr,
			    double originX, double originY,
			    double scaleX, double scaleY);
static void		TranslateRectOval(Tk_Canvas canvas, Tk_Item *itemPtr,
			    double deltaX, double deltaY);

/*
................................................................................
    TranslateRectOval,		/* translateProc */
    NULL,			/* indexProc */
    NULL,			/* icursorProc */
    NULL,			/* selectionProc */
    NULL,			/* insertProc */
    NULL,			/* dTextProc */
    NULL,			/* nextPtr */
    RotateRectOval,		/* rotateProc */
    0, NULL, NULL
};

Tk_ItemType tkOvalType = {
    "oval",			/* name */
    sizeof(RectOvalItem),	/* itemSize */
    CreateRectOval,		/* createProc */
    configSpecs,		/* configSpecs */
................................................................................
    TranslateRectOval,		/* translateProc */
    NULL,			/* indexProc */
    NULL,			/* cursorProc */
    NULL,			/* selectionProc */
    NULL,			/* insertProc */
    NULL,			/* dTextProc */
    NULL,			/* nextPtr */
    RotateRectOval,		/* rotateProc */
    0, NULL, NULL
};
 
/*
 *--------------------------------------------------------------
 *
 * CreateRectOval --
 *
................................................................................
		&& ((xDelta2 + yDelta1) < 1.0)
		&& ((xDelta2 + yDelta2) < 1.0)) {
	    return -1;
	}
    }
    return result;
}
 
/*
 *--------------------------------------------------------------
 *
 * RotateRectOval --
 *
 *	This function is invoked to rotate a rectangle or oval item's
 *	coordinates. It works by rotating a computed point in the centre of
 *	the bounding box, NOT by rotating the corners of the bounding box.
 *
 * Results:
 *	None.
 *
 * Side effects:
 *	The position of the rectangle or oval is rotated by angleRad about
 *	(originX, originY), and the bounding box is updated in the generic
 *	part of the item structure.
 *
 *--------------------------------------------------------------
 */

static void
RotateRectOval(
    Tk_Canvas canvas,		/* Canvas containing rectangle. */
    Tk_Item *itemPtr,		/* Rectangle to be scaled. */
    double originX, double originY,
				/* Origin about which to rotate rect. */
    double angleRad)		/* Amount to scale in X direction. */
{
    RectOvalItem *rectOvalPtr = (RectOvalItem *) itemPtr;
    double newX, newY, oldX, oldY;

    /*
     * Compute the centre of the box, then rotate that about the origin.
     */

    newX = oldX = (rectOvalPtr->bbox[0] + rectOvalPtr->bbox[2]) / 2.0;
    newY = oldY = (rectOvalPtr->bbox[1] + rectOvalPtr->bbox[3]) / 2.0;
    TkRotatePoint(originX, originY, sin(angleRad), cos(angleRad),
	    &newX, &newY);

    /*
     * Apply the translation to the box.
     */

    rectOvalPtr->bbox[0] += newX - oldX;
    rectOvalPtr->bbox[1] += newY - oldY;
    rectOvalPtr->bbox[2] += newX - oldX;
    rectOvalPtr->bbox[3] += newY - oldY;
    ComputeRectOvalBbox(canvas, rectOvalPtr);
}
 
/*
 *--------------------------------------------------------------
 *
 * ScaleRectOval --
 *
 *	This function is invoked to rescale a rectangle or oval item.

Changes to generic/tkScale.c.

1348
1349
1350
1351
1352
1353
1354
1355
1356
1357
1358
1359
1360
1361
1362
1363
1364
1365
1366
1367
1368
1369
1370
1371
1372
1373
1374




















1375
1376
1377
1378
1379
1380
1381
{
    register TkScale *scalePtr = clientData;
    const char *resultStr;
    double value;
    Tcl_Obj *valuePtr;
    int result;

    /*
     * See ticket [5d991b82].
     */

    if (scalePtr->varNamePtr == NULL) {
	if (!(flags & TCL_INTERP_DESTROYED)) {
	    Tcl_UntraceVar2(interp, name1, name2,
		    TCL_GLOBAL_ONLY|TCL_TRACE_WRITES|TCL_TRACE_UNSETS,
		    ScaleVarProc, clientData);
	}
	return NULL;
    }

    /*
     * If the variable is unset, then immediately recreate it unless the whole
     * interpreter is going away.
     */

    if (flags & TCL_TRACE_UNSETS) {
	if ((flags & TCL_TRACE_DESTROYED) && !(flags & TCL_INTERP_DESTROYED)) {




















	    Tcl_TraceVar2(interp, Tcl_GetString(scalePtr->varNamePtr),
		    NULL, TCL_GLOBAL_ONLY|TCL_TRACE_WRITES|TCL_TRACE_UNSETS,
		    ScaleVarProc, clientData);
	    scalePtr->flags |= NEVER_SET;
	    TkScaleSetValue(scalePtr, scalePtr->value, 1, 0);
	}
	return NULL;






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1348
1349
1350
1351
1352
1353
1354













1355
1356
1357
1358
1359
1360
1361
1362
1363
1364
1365
1366
1367
1368
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1384
1385
1386
1387
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{
    register TkScale *scalePtr = clientData;
    const char *resultStr;
    double value;
    Tcl_Obj *valuePtr;
    int result;














    /*
     * If the variable is unset, then immediately recreate it unless the whole
     * interpreter is going away.
     */

    if (flags & TCL_TRACE_UNSETS) {
        if (!Tcl_InterpDeleted(interp) && scalePtr->varNamePtr) {
            ClientData probe = NULL;

            do {
                probe = Tcl_VarTraceInfo(interp,
                        Tcl_GetString(scalePtr->varNamePtr),
                        TCL_GLOBAL_ONLY|TCL_TRACE_WRITES|TCL_TRACE_UNSETS,
                        ScaleVarProc, probe);
                if (probe == (ClientData)scalePtr) {
                    break;
                }
            } while (probe);
            if (probe) {
                /*
                 * We were able to fetch the unset trace for our
                 * varNamePtr, which means it is not unset and not
                 * the cause of this unset trace. Instead some outdated
                 * former variable must be, and we should ignore it.
                 */
                return NULL;
            }
	    Tcl_TraceVar2(interp, Tcl_GetString(scalePtr->varNamePtr),
		    NULL, TCL_GLOBAL_ONLY|TCL_TRACE_WRITES|TCL_TRACE_UNSETS,
		    ScaleVarProc, clientData);
	    scalePtr->flags |= NEVER_SET;
	    TkScaleSetValue(scalePtr, scalePtr->value, 1, 0);
	}
	return NULL;

Changes to generic/tkText.c.

2776
2777
2778
2779
2780
2781
2782
2783
2784
2785
2786
2787
2788
2789
2790
    const TkTextIndex *index2Ptr)
				/* Index describing second location. */
{
    TkUndoSubAtom *iAtom, *dAtom;
    int canUndo, canRedo;
    char lMarkName[20] = "tk::undoMarkL";
    char rMarkName[20] = "tk::undoMarkR";
    char stringUndoMarkId[7] = "";

    /*
     * Create the helpers.
     */

    Tcl_Obj *seeInsertObj = Tcl_NewObj();
    Tcl_Obj *markSet1InsertObj = Tcl_NewObj();






|







2776
2777
2778
2779
2780
2781
2782
2783
2784
2785
2786
2787
2788
2789
2790
    const TkTextIndex *index2Ptr)
				/* Index describing second location. */
{
    TkUndoSubAtom *iAtom, *dAtom;
    int canUndo, canRedo;
    char lMarkName[20] = "tk::undoMarkL";
    char rMarkName[20] = "tk::undoMarkR";
    char stringUndoMarkId[16] = "";

    /*
     * Create the helpers.
     */

    Tcl_Obj *seeInsertObj = Tcl_NewObj();
    Tcl_Obj *markSet1InsertObj = Tcl_NewObj();

Changes to generic/tkWindow.c.

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337
338
339
340
341
342

343
344
345
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3068
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	 * Create built-in photo image formats.
	 */

        Tk_CreatePhotoImageFormat(&tkImgFmtDefault);
	Tk_CreatePhotoImageFormat(&tkImgFmtGIF);
	Tk_CreatePhotoImageFormat(&tkImgFmtPNG);
	Tk_CreatePhotoImageFormat(&tkImgFmtPPM);

    }

    if ((parent != NULL) && (screenName != NULL) && (screenName[0] == '\0')) {
	dispPtr = ((TkWindow *) parent)->dispPtr;
	screenId = Tk_ScreenNumber(parent);
    } else {
	dispPtr = GetScreen(interp, screenName, &screenId);
................................................................................
     * Ensure that we are getting a compatible version of Tcl.
     */

    if (Tcl_InitStubs(interp, "8.6-", 0) == NULL) {
	return TCL_ERROR;
    }







    /*
     * Ensure that our obj-types are registered with the Tcl runtime.
     */

    TkRegisterObjTypes();

    tsdPtr = Tcl_GetThreadData(&dataKey, sizeof(ThreadSpecificData));






>







 







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	 * Create built-in photo image formats.
	 */

        Tk_CreatePhotoImageFormat(&tkImgFmtDefault);
	Tk_CreatePhotoImageFormat(&tkImgFmtGIF);
	Tk_CreatePhotoImageFormat(&tkImgFmtPNG);
	Tk_CreatePhotoImageFormat(&tkImgFmtPPM);
	Tk_CreatePhotoImageFormat(&tkImgFmtSVGnano);
    }

    if ((parent != NULL) && (screenName != NULL) && (screenName[0] == '\0')) {
	dispPtr = ((TkWindow *) parent)->dispPtr;
	screenId = Tk_ScreenNumber(parent);
    } else {
	dispPtr = GetScreen(interp, screenName, &screenId);
................................................................................
     * Ensure that we are getting a compatible version of Tcl.
     */

    if (Tcl_InitStubs(interp, "8.6-", 0) == NULL) {
	return TCL_ERROR;
    }

    /*
     * TIP #59: Make embedded configuration information available.
     */

    TkInitEmbeddedConfigurationInformation(interp);

    /*
     * Ensure that our obj-types are registered with the Tcl runtime.
     */

    TkRegisterObjTypes();

    tsdPtr = Tcl_GetThreadData(&dataKey, sizeof(ThreadSpecificData));

Changes to generic/ttk/ttkEntry.c.

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static int EntryConfigure(Tcl_Interp *interp, void *recordPtr, int mask)
{
    Entry *entryPtr = recordPtr;
    Tcl_Obj *textVarName = entryPtr->entry.textVariableObj;
    Ttk_TraceHandle *vt = 0;

    if (mask & TEXTVAR_CHANGED) {
	if (textVarName && *Tcl_GetString(textVarName)) {
	    vt = Ttk_TraceVariable(interp,
		    textVarName,EntryTextVariableTrace,entryPtr);
	    if (!vt) return TCL_ERROR;
	}
    }

    if (TtkCoreConfigure(interp, recordPtr, mask) != TCL_OK) {
................................................................................
	if (x > maxWidth) {
	    x = maxWidth;
	    roundUp = 1;
	}
	*indexPtr = Tk_PointToChar(entryPtr->entry.textLayout,
		x - entryPtr->entry.layoutX, 0);


	if (*indexPtr < entryPtr->entry.xscroll.first) {
	    *indexPtr = entryPtr->entry.xscroll.first;
	}

	/*
	 * Special trick:  if the x-position was off-screen to the right,
	 * round the index up to refer to the character just after the
................................................................................
{
    Entry *entryPtr = recordPtr;
    if (objc == 3) {
	int newFirst;
	if (EntryIndex(interp, entryPtr, objv[2], &newFirst) != TCL_OK) {
	    return TCL_ERROR;
	}
	TtkScrollTo(entryPtr->entry.xscrollHandle, newFirst);
	return TCL_OK;
    }
    return TtkScrollviewCommand(interp, objc, objv, entryPtr->entry.xscrollHandle);
}

static const Ttk_Ensemble EntryCommands[] = {
    { "bbox", 		EntryBBoxCommand,0 },






|







 







>







 







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static int EntryConfigure(Tcl_Interp *interp, void *recordPtr, int mask)
{
    Entry *entryPtr = recordPtr;
    Tcl_Obj *textVarName = entryPtr->entry.textVariableObj;
    Ttk_TraceHandle *vt = 0;

    if (mask & TEXTVAR_CHANGED) {
	if (textVarName && *Tcl_GetString(textVarName) != '\0') {
	    vt = Ttk_TraceVariable(interp,
		    textVarName,EntryTextVariableTrace,entryPtr);
	    if (!vt) return TCL_ERROR;
	}
    }

    if (TtkCoreConfigure(interp, recordPtr, mask) != TCL_OK) {
................................................................................
	if (x > maxWidth) {
	    x = maxWidth;
	    roundUp = 1;
	}
	*indexPtr = Tk_PointToChar(entryPtr->entry.textLayout,
		x - entryPtr->entry.layoutX, 0);

        TtkUpdateScrollInfo(entryPtr->entry.xscrollHandle);
	if (*indexPtr < entryPtr->entry.xscroll.first) {
	    *indexPtr = entryPtr->entry.xscroll.first;
	}

	/*
	 * Special trick:  if the x-position was off-screen to the right,
	 * round the index up to refer to the character just after the
................................................................................
{
    Entry *entryPtr = recordPtr;
    if (objc == 3) {
	int newFirst;
	if (EntryIndex(interp, entryPtr, objv[2], &newFirst) != TCL_OK) {
	    return TCL_ERROR;
	}
	TtkScrollTo(entryPtr->entry.xscrollHandle, newFirst, 1);
	return TCL_OK;
    }
    return TtkScrollviewCommand(interp, objc, objv, entryPtr->entry.xscrollHandle);
}

static const Ttk_Ensemble EntryCommands[] = {
    { "bbox", 		EntryBBoxCommand,0 },

Changes to generic/ttk/ttkScroll.c.

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 * 	-yscrollcommand has changed).
 */

void TtkScrollbarUpdateRequired(ScrollHandle h)
{
    h->flags |= SCROLL_UPDATE_REQUIRED;
}














/* TtkScrollviewCommand --
 * 	Widget [xy]view command implementation.
 *
 *  $w [xy]view -- return current view region
 *  $w [xy]view $index -- set topmost item
 *  $w [xy]view moveto $fraction
 *  $w [xy]view scroll $number $what -- scrollbar interface
 */
int TtkScrollviewCommand(
    Tcl_Interp *interp, int objc, Tcl_Obj *const objv[], ScrollHandle h)
{
    Scrollable *s = h->scrollPtr;



    int newFirst = s->first;

    if (objc == 2) {
	Tcl_Obj *result[2];
	result[0] = Tcl_NewDoubleObj((double)s->first / s->total);
	result[1] = Tcl_NewDoubleObj((double)s->last / s->total);
	Tcl_SetObjResult(interp, Tcl_NewListObj(2, result));
	return TCL_OK;
................................................................................
		int perPage = s->last - s->first;	/* @@@ */
		newFirst = s->first + count * perPage;
		break;
	    }
	}
    }

    TtkScrollTo(h, newFirst);

    return TCL_OK;
}

void TtkScrollTo(ScrollHandle h, int newFirst)
{
    Scrollable *s = h->scrollPtr;





    if (newFirst >= s->total)
	newFirst = s->total - 1;
    if (newFirst > s->first && s->last >= s->total) /* don't scroll past end */
	newFirst = s->first;
    if (newFirst < 0)
	newFirst = 0;






>
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>













>
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|







 







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|


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 * 	-yscrollcommand has changed).
 */

void TtkScrollbarUpdateRequired(ScrollHandle h)
{
    h->flags |= SCROLL_UPDATE_REQUIRED;
}

/* TtkUpdateScrollInfo --
 * 	Call the layoutProc to update the scroll info first, last, and total.
 * 	Do it only if needed, that is when a redisplay is pending (which
 * 	indicates scroll info are possibly out of date).
 */

void TtkUpdateScrollInfo(ScrollHandle h)
{
    if (h->corePtr->flags & REDISPLAY_PENDING) {
        h->corePtr->widgetSpec->layoutProc(h->corePtr);
    }
}

/* TtkScrollviewCommand --
 * 	Widget [xy]view command implementation.
 *
 *  $w [xy]view -- return current view region
 *  $w [xy]view $index -- set topmost item
 *  $w [xy]view moveto $fraction
 *  $w [xy]view scroll $number $what -- scrollbar interface
 */
int TtkScrollviewCommand(
    Tcl_Interp *interp, int objc, Tcl_Obj *const objv[], ScrollHandle h)
{
    Scrollable *s = h->scrollPtr;
    int newFirst;

    TtkUpdateScrollInfo(h);
    newFirst = s->first;

    if (objc == 2) {
	Tcl_Obj *result[2];
	result[0] = Tcl_NewDoubleObj((double)s->first / s->total);
	result[1] = Tcl_NewDoubleObj((double)s->last / s->total);
	Tcl_SetObjResult(interp, Tcl_NewListObj(2, result));
	return TCL_OK;
................................................................................
		int perPage = s->last - s->first;	/* @@@ */
		newFirst = s->first + count * perPage;
		break;
	    }
	}
    }

    TtkScrollTo(h, newFirst, 0);

    return TCL_OK;
}

void TtkScrollTo(ScrollHandle h, int newFirst, int updateScrollInfo)
{
    Scrollable *s = h->scrollPtr;

    if (updateScrollInfo) {
        TtkUpdateScrollInfo(h);
    }

    if (newFirst >= s->total)
	newFirst = s->total - 1;
    if (newFirst > s->first && s->last >= s->total) /* don't scroll past end */
	newFirst = s->first;
    if (newFirst < 0)
	newFirst = 0;

Changes to generic/ttk/ttkTrace.c.

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/*
 * Tcl_VarTraceProc for trace handles.
 */
static char *
VarTraceProc(
    ClientData clientData,	/* Widget record pointer */
    Tcl_Interp *interp, 	/* Interpreter containing variable. */
    const char *name1,		/* Name of variable. */
    const char *name2,		/* Second part of variable name. */
    int flags)			/* Information about what happened. */
{
    Ttk_TraceHandle *tracePtr = clientData;
    const char *name, *value;
    Tcl_Obj *valuePtr;

    if (flags & TCL_INTERP_DESTROYED) {
	return NULL;
    }

    /*
     * See ticket [5d991b82].
     */

    if (tracePtr->varnameObj == NULL) {
	Tcl_UntraceVar2(interp, name1, name2,
		TCL_GLOBAL_ONLY|TCL_TRACE_WRITES|TCL_TRACE_UNSETS,
		VarTraceProc, clientData);
	return NULL;
    }

    name = Tcl_GetString(tracePtr->varnameObj);

    /*
     * If the variable is being unset, then re-establish the trace:
     */
    if (flags & TCL_TRACE_DESTROYED) {
	/*






|
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/*
 * Tcl_VarTraceProc for trace handles.
 */
static char *
VarTraceProc(
    ClientData clientData,	/* Widget record pointer */
    Tcl_Interp *interp, 	/* Interpreter containing variable. */
    const char *name1,		/* (unused) */
    const char *name2,		/* (unused) */
    int flags)			/* Information about what happened. */
{
    Ttk_TraceHandle *tracePtr = clientData;
    const char *name, *value;
    Tcl_Obj *valuePtr;

    if (flags & TCL_INTERP_DESTROYED) {
	return NULL;
    }












    name = Tcl_GetString(tracePtr->varnameObj);

    /*
     * If the variable is being unset, then re-establish the trace:
     */
    if (flags & TCL_TRACE_DESTROYED) {
	/*

Changes to generic/ttk/ttkTreeview.c.

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    }
    tv->tree.yscroll.total = CountRows(tv->tree.root) - 1;

    /* Make sure item is visible:
     */
    rowNumber = RowNumber(tv, item);
    if (rowNumber < tv->tree.yscroll.first) {
	TtkScrollTo(tv->tree.yscrollHandle, rowNumber);
    } else if (rowNumber >= tv->tree.yscroll.last) {
	TtkScrollTo(tv->tree.yscrollHandle,
	    tv->tree.yscroll.first + (1+rowNumber - tv->tree.yscroll.last));
    }

    return TCL_OK;
}

/*------------------------------------------------------------------------
 * +++ Widget commands -- interactive column resize






|


|







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    }
    tv->tree.yscroll.total = CountRows(tv->tree.root) - 1;

    /* Make sure item is visible:
     */
    rowNumber = RowNumber(tv, item);
    if (rowNumber < tv->tree.yscroll.first) {
	TtkScrollTo(tv->tree.yscrollHandle, rowNumber, 1);
    } else if (rowNumber >= tv->tree.yscroll.last) {
	TtkScrollTo(tv->tree.yscrollHandle,
	    tv->tree.yscroll.first + (1+rowNumber - tv->tree.yscroll.last), 1);
    }

    return TCL_OK;
}

/*------------------------------------------------------------------------
 * +++ Widget commands -- interactive column resize

Changes to generic/ttk/ttkWidget.h.

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MODULE_SCOPE ScrollHandle TtkCreateScrollHandle(WidgetCore *, Scrollable *);
MODULE_SCOPE void TtkFreeScrollHandle(ScrollHandle);

MODULE_SCOPE int TtkScrollviewCommand(
    Tcl_Interp *interp, int objc, Tcl_Obj *const objv[], ScrollHandle);


MODULE_SCOPE void TtkScrollTo(ScrollHandle, int newFirst);
MODULE_SCOPE void TtkScrolled(ScrollHandle, int first, int last, int total);
MODULE_SCOPE void TtkScrollbarUpdateRequired(ScrollHandle);

/*
 * Tag sets (work in progress, half-baked)
 */







>
|







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MODULE_SCOPE ScrollHandle TtkCreateScrollHandle(WidgetCore *, Scrollable *);
MODULE_SCOPE void TtkFreeScrollHandle(ScrollHandle);

MODULE_SCOPE int TtkScrollviewCommand(
    Tcl_Interp *interp, int objc, Tcl_Obj *const objv[], ScrollHandle);

MODULE_SCOPE void TtkUpdateScrollInfo(ScrollHandle h);
MODULE_SCOPE void TtkScrollTo(ScrollHandle, int newFirst, int updateScrollInfo);
MODULE_SCOPE void TtkScrolled(ScrollHandle, int first, int last, int total);
MODULE_SCOPE void TtkScrollbarUpdateRequired(ScrollHandle);

/*
 * Tag sets (work in progress, half-baked)
 */

Changes to library/button.tcl.

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755

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proc ::tk::CheckLeave {w} {
    variable ::tk::Priv
    if {[$w cget -state] ne "disabled"} {
	$w configure -state normal
    }

    # Restore the original button "selected" color; assume that the user
    # wasn't monkeying around with things too much.

    if {![$w cget -indicatoron] && [info exist Priv($w,selectcolor)]} {



	$w configure -selectcolor $Priv($w,selectcolor)

    }
    unset -nocomplain Priv($w,selectcolor) Priv($w,aselectcolor)

    # Restore the original button relief if it was changed by Tk. That is
    # signaled by the existence of Priv($w,prelief).

    if {[info exists Priv($w,relief)]} {






|
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>







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proc ::tk::CheckLeave {w} {
    variable ::tk::Priv
    if {[$w cget -state] ne "disabled"} {
	$w configure -state normal
    }

    # Restore the original button "selected" color; but only if the user
    # has not changed it in the meantime.

    if {![$w cget -indicatoron] && [info exist Priv($w,selectcolor)]} {
        if {[$w cget -selectcolor] eq $Priv($w,selectcolor)
                || ([info exist Priv($w,aselectcolor)] &&
                    [$w cget -selectcolor] eq $Priv($w,aselectcolor))} {
	    $w configure -selectcolor $Priv($w,selectcolor)
	}
    }
    unset -nocomplain Priv($w,selectcolor) Priv($w,aselectcolor)

    # Restore the original button relief if it was changed by Tk. That is
    # signaled by the existence of Priv($w,prelief).

    if {[info exists Priv($w,relief)]} {

Changes to library/menu.tcl.

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	set entry ""
	if {[$button cget -indicatoron]} {
	    set entry [MenuFindName $menu [$button cget -text]]
	    if {$entry eq ""} {
		set entry 0
	    }
	}
	if {$entry ne ""} {
	    if {$entry == [$menu index last]} {
		set entryHeight [expr {[winfo reqheight $menu] \
				       - [$menu yposition $entry]}]
	    } else {
		set entryHeight [expr {[$menu yposition [expr {$entry+1}]] \
					- [$menu yposition $entry]}]
	    }
	}
	set x [winfo rootx $button]
	set y [winfo rooty $button]
	switch [$button cget -direction] {
	    above {
		incr y [expr {-[winfo reqheight $menu]}]
		# if we go offscreen to the top, show as 'below'
		if {$y < [winfo vrooty $button]} {






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	set entry ""
	if {[$button cget -indicatoron]} {
	    set entry [MenuFindName $menu [$button cget -text]]
	    if {$entry eq ""} {
		set entry 0
	    }
	}









	set x [winfo rootx $button]
	set y [winfo rooty $button]
	switch [$button cget -direction] {
	    above {
		incr y [expr {-[winfo reqheight $menu]}]
		# if we go offscreen to the top, show as 'below'
		if {$y < [winfo vrooty $button]} {

Changes to library/ttk/aquaTheme.tcl.

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#

namespace eval ttk::theme::aqua {
    ttk::style theme settings aqua {

	ttk::style configure . \
	    -font TkDefaultFont \
	    -background systemTtkBackground \
	    -foreground systemLabelColor \
	    -selectbackground systemHighlight \
	    -selectforeground systemLabelColor \
	    -selectborderwidth 0 \
	    -insertwidth 1

	ttk::style map . \
	    -foreground {
		disabled systemLabelColor
		background systemLabelColor} \
	    -selectbackground {
		background systemHighlight
		!focus systemHighlightSecondary} \
	    -selectforeground {
		background systemLabelColor
		!focus systemDialogActiveText}

	# Button
	ttk::style configure TButton -anchor center -width -6\
	    -foreground systemControlTextColor
	ttk::style map TButton \
	    -foreground {
		disabled systemDisabledControlTextColor}
	ttk::style map TCheckbutton \
	    -foreground {
		disabled systemDisabledControlTextColor}
	ttk::style map TRadiobutton \
	    -foreground {
		disabled systemDisabledControlTextColor}
	ttk::style configure TMenubutton -anchor center -padding {2 0 0 2}
	ttk::style configure Toolbutton -anchor center
	ttk::style map Toolbutton \
	    -foreground {
		disabled systemDisabledControlTextColor
	    }

	# Entry
	ttk::style configure TEntry \
	    -foreground systemTextColor \
	    -background systemTextBackgroundColor \
	    -selectforeground systemSelectedTextColor
	ttk::style map TEntry \
	    -foreground {
		disabled systemDisabledControlTextColor}

	# Workaround for #1100117:
	# Actually, on Aqua we probably shouldn't stipple images in
	# disabled buttons even if it did work...
	ttk::style configure . -stipple {}

	# Notebook
	ttk::style configure TNotebook -tabmargins {10 0} -tabposition n
	ttk::style configure TNotebook -padding {18 8 18 17}
	ttk::style configure TNotebook.Tab -padding {12 3 12 2}
	ttk::style configure TNotebook.Tab -foreground white
	ttk::style map TNotebook.Tab \
	    -foreground {
		{background !disabled !selected} systemControlTextColor
		{background selected} systemTextBackgroundColor
		disabled systemDisabledControlTextColor
		!selected systemControlTextColor}

	# Combobox:
	ttk::style configure TCombobox \
	    -foreground systemTextColor \
	    -background systemTransparent \
	    -selectforeground systemSelectedTextColor \
	    -selectbackground systemSelectedTextBackgroundColor
................................................................................
		!active systemTextColor
	    } \
	    -selectbackground {
		!active systemTextBackgroundColor
		!focus systemTextBackgroundColor
		focus systemSelectedTextBackgroundColor
	    }
	
	# Treeview:
	ttk::style configure Heading \
	    -font TkHeadingFont \
	    -foreground systemTextColor \
	    -background systemTtkBackground
	ttk::style configure Treeview -rowheight 18 \
	    -background systemTextBackgroundColor \
	    -foreground systemTextColor \
	    -fieldbackground systemTextBackgroundColor
	ttk::style map Treeview \
	    -background {
		selected systemSelectedTextBackgroundColor






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#

namespace eval ttk::theme::aqua {
    ttk::style theme settings aqua {

	ttk::style configure . \
	    -font TkDefaultFont \
	    -background systemWindowBackgroundColor \
	    -foreground systemLabelColor \
	    -selectbackground systemHighlight \
	    -selectforeground systemLabelColor \
	    -selectborderwidth 0 \
	    -insertwidth 1

	ttk::style map . \
	    -foreground {
		disabled systemDisabledControlTextColor
		background systemLabelColor} \
	    -selectbackground {
		background systemSelectedTextBackgroundColor
		!focus systemSelectedTextBackgroundColor} \
	    -selectforeground {
		background systemSelectedTextColor
		!focus systemSelectedTextColor}

	# Button
	ttk::style configure TButton -anchor center -width -6\
	    -foreground systemControlTextColor









	ttk::style configure TMenubutton -anchor center -padding {2 0 0 2}
	ttk::style configure Toolbutton -anchor center





	# Entry
	ttk::style configure TEntry \
	    -foreground systemTextColor \
	    -background systemTextBackgroundColor \





	# Workaround for #1100117:
	# Actually, on Aqua we probably shouldn't stipple images in
	# disabled buttons even if it did work...
	ttk::style configure . -stipple {}

	# Notebook
	ttk::style configure TNotebook -tabmargins {10 0} -tabposition n
	ttk::style configure TNotebook -padding {18 8 18 17}
	ttk::style configure TNotebook.Tab -padding {12 3 12 2}
	ttk::style configure TNotebook.Tab -foreground systemControlTextColor
	ttk::style map TNotebook.Tab \
	    -foreground {
		background systemControlTextColor

		disabled systemDisabledControlTextColor
		selected systemSelectedTabTextColor}

	# Combobox:
	ttk::style configure TCombobox \
	    -foreground systemTextColor \
	    -background systemTransparent \
	    -selectforeground systemSelectedTextColor \
	    -selectbackground systemSelectedTextBackgroundColor
................................................................................
		!active systemTextColor
	    } \
	    -selectbackground {
		!active systemTextBackgroundColor
		!focus systemTextBackgroundColor
		focus systemSelectedTextBackgroundColor
	    }

	# Treeview:
	ttk::style configure Heading \
	    -font TkHeadingFont \
	    -foreground systemTextColor \
	    -background systemWindowBackgroundColor
	ttk::style configure Treeview -rowheight 18 \
	    -background systemTextBackgroundColor \
	    -foreground systemTextColor \
	    -fieldbackground systemTextBackgroundColor
	ttk::style map Treeview \
	    -background {
		selected systemSelectedTextBackgroundColor

Changes to library/ttk/combobox.tcl.

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## UnmapPopdown -- <Unmap> binding for ComboboxPopdown
#
proc ttk::combobox::UnmapPopdown {w} {
    [winfo parent $w] state !pressed
    ttk::releaseGrab $w
}

###
#

namespace eval ::ttk::combobox {
    # @@@ Until we have a proper native scrollbar on Aqua, use
    # @@@ the regular Tk one.  Use ttk::scrollbar on other platforms.
    variable scrollbar ttk::scrollbar
    if {[tk windowingsystem] eq "aqua"} {
	set scrollbar ::scrollbar
    }
}

## PopdownWindow --
#	Returns the popdown widget associated with a combobox,
#	creating it if necessary.
#
proc ttk::combobox::PopdownWindow {cb} {
    variable scrollbar

    if {![winfo exists $cb.popdown]} {
	set poplevel [PopdownToplevel $cb.popdown]
	set popdown [ttk::frame $poplevel.f -style ComboboxPopdownFrame]

	$scrollbar $popdown.sb \
	    -orient vertical -command [list $popdown.l yview]
	listbox $popdown.l \
	    -listvariable ttk::combobox::Values($cb) \
	    -yscrollcommand [list $popdown.sb set] \
	    -exportselection false \
	    -selectmode browse \
	    -activestyle none \






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## UnmapPopdown -- <Unmap> binding for ComboboxPopdown
#
proc ttk::combobox::UnmapPopdown {w} {
    [winfo parent $w] state !pressed
    ttk::releaseGrab $w
}













## PopdownWindow --
#	Returns the popdown widget associated with a combobox,
#	creating it if necessary.
#
proc ttk::combobox::PopdownWindow {cb} {


    if {![winfo exists $cb.popdown]} {
	set poplevel [PopdownToplevel $cb.popdown]
	set popdown [ttk::frame $poplevel.f -style ComboboxPopdownFrame]

	ttk::scrollbar $popdown.sb \
	    -orient vertical -command [list $popdown.l yview]
	listbox $popdown.l \
	    -listvariable ttk::combobox::Values($cb) \
	    -yscrollcommand [list $popdown.sb set] \
	    -exportselection false \
	    -selectmode browse \
	    -activestyle none \

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    }
    return $pos
}

## See $index -- Make sure that the character at $index is visible.
#
proc ttk::entry::See {w {index insert}} {
    update idletasks	;# ensure scroll data up-to-date
    set c [$w index $index]
    # @@@ OR: check [$w index left] / [$w index right]
    if {$c < [$w index @0] || $c >= [$w index @[winfo width $w]]} {
	$w xview $c
    }
}







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    }
    return $pos
}

## See $index -- Make sure that the character at $index is visible.
#
proc ttk::entry::See {w {index insert}} {

    set c [$w index $index]
    # @@@ OR: check [$w index left] / [$w index right]
    if {$c < [$w index @0] || $c >= [$w index @[winfo width $w]]} {
	$w xview $c
    }
}

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    bind TMenubutton <ButtonPress-1>  \
	{ %W state pressed ; ttk::menubutton::Popdown %W }
    bind TMenubutton <ButtonRelease-1>  \
	{ if {[winfo exists %W]} { %W state !pressed } }
}

# PostPosition --
#	Returns the x and y coordinates where the menu
#	should be posted, based on the menubutton and menu size
#	and -direction option.



#
# TODO: adjust menu width to be at least as wide as the button
#	for -direction above, below.
#


proc ttk::menubutton::PostPosition {mb menu} {














    set x [winfo rootx $mb]
    set y [winfo rooty $mb]
    set dir [$mb cget -direction]




    set bw [winfo width $mb]





















    set bh [winfo height $mb]
    set mw [winfo reqwidth $menu]
    set mh [winfo reqheight $menu]
    set sw [expr {[winfo screenwidth  $menu] - $bw - $mw}]
    set sh [expr {[winfo screenheight $menu] - $bh - $mh}]





    switch -- $dir {
	above { if {$y >= $mh} { incr y -$mh } { incr y  $bh } }
	below { if {$y <= $sh} { incr y  $bh } { incr y -$mh } }
	left  { if {$x >= $mw} { incr x -$mw } { incr x  $bw } }
	right { if {$x <= $sw} { incr x  $bw } { incr x -$mw } }
	flush {
	    # post menu atop menubutton.
	    # If there's a menu entry whose label matches the
	    # menubutton -text, assume this is an optionmenu
	    # and place that entry over the menubutton.

	    set index [FindMenuEntry $menu [$mb cget -text]]
	    if {$index ne ""} {








		incr y -[$menu yposition $index]




	    }
	}







    }
















    return [list $x $y]

}

# Popdown --
#	Post the menu and set a grab on the menu.
#
proc ttk::menubutton::Popdown {mb} {
    if {[$mb instate disabled] || [set menu [$mb cget -menu]] eq ""} {
	return
    }
    foreach {x y} [PostPosition $mb $menu] { break }
    tk_popup $menu $x $y
}

# Pulldown (X11 only) --
#	Called when Button1 is pressed on a menubutton.
#	Posts the menu; a subsequent ButtonRelease
#	or Leave event will set a grab on the menu.
#
proc ttk::menubutton::Pulldown {mb} {
    variable State
    if {[$mb instate disabled] || [set menu [$mb cget -menu]] eq ""} {
	return
    }
    foreach {x y} [PostPosition $mb $menu] { break }
    set State(pulldown) 1
    set State(oldcursor) [$mb cget -cursor]

    $mb state pressed
    $mb configure -cursor [$menu cget -cursor]




    $menu post $x $y

    tk_menuSetFocus $menu
}

# TransferGrab (X11 only) --
#	Switch from pulldown mode (menubutton has an implicit grab)
#	to popdown mode (menu has an explicit grab).
#
................................................................................
    variable State
    if {$State(pulldown)} {
	$mb configure -cursor $State(oldcursor)
	$mb state {!pressed !active}
	set State(pulldown) 0

	set menu [$mb cget -menu]

    	tk_popup $menu [winfo rootx $menu] [winfo rooty $menu]
    }
}

# FindMenuEntry --
#	Hack to support tk_optionMenus.
#	Returns the index of the menu entry with a matching -label,






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    bind TMenubutton <ButtonPress-1>  \
	{ %W state pressed ; ttk::menubutton::Popdown %W }
    bind TMenubutton <ButtonRelease-1>  \
	{ if {[winfo exists %W]} { %W state !pressed } }
}

# PostPosition --
#	Returns x and y coordinates and a menu item index.
#       If the index is not an empty string the menu should
#       be posted so that the upper left corner of the indexed
#       menu item is located at the point (x, y).  Otherwise
#       the top left corner of the menu itself should be located
#       at that point.
#
# TODO: adjust menu width to be at least as wide as the button
#	for -direction above, below.
#

if {[tk windowingsystem] eq "aqua"} {
    proc ::ttk::menubutton::PostPosition {mb menu} {
	set menuPad 5
	set buttonPad 1
	set bevelPad 4
	set mh [winfo reqheight $menu]
	set bh [expr {[winfo height $mb]} + $buttonPad]
	set bbh [expr {[winfo height $mb]} + $bevelPad]
	set mw [winfo reqwidth $menu]
	set bw [winfo width $mb]
	set dF [expr {[winfo width $mb] - [winfo reqwidth $menu] - $menuPad}]
	set entry ""
	set entry [::tk::MenuFindName $menu [$mb cget -text]]
	if {$entry eq ""} {
	    set entry 0
	}
	set x [winfo rootx $mb]
	set y [winfo rooty $mb]
	switch [$mb cget -direction] {
	    above {
		set entry ""
		incr y [expr {-$mh + 2 * $menuPad}]
	    }

	    below {
		set entry ""
		incr y $bh
	    }
	    left {
		incr y $menuPad
		incr x -$mw
	    }
	    right {
		incr y $menuPad
		incr x $bw
	    }
	    default {
		incr y $bbh
	    }
	}
	return [list $x $y $entry]
    }
} else {
    proc ::ttk::menubutton::PostPosition {mb menu} {
	set mh [expr {[winfo reqheight $menu]}]
	set bh [expr {[winfo height $mb]}]
	set mw [expr {[winfo reqwidth $menu]}]

	set bw [expr {[winfo width $mb]}]

	set dF [expr {[winfo width $mb] - [winfo reqwidth $menu]}]
	if {[tk windowingsystem] eq "win32"} {
	    incr mh 6
	    incr mw 16
	}










	set entry {}
	set entry [::tk::MenuFindName $menu [$mb cget -text]]

	if {$entry eq {}} {
	    set entry 0
	}
	set x [winfo rootx $mb]
	set y [winfo rooty $mb]
	switch [$mb cget -direction] {
	    above {
		set entry {}
		incr y -$mh
		# if we go offscreen to the top, show as 'below'
		if {$y < [winfo vrooty $mb]} {
		    set y [expr {[winfo vrooty $mb] + [winfo rooty $mb]\
                           + [winfo reqheight $mb]}]
		}
	    }
	    below {
		set entry {}
		incr y $bh
		# if we go offscreen to the bottom, show as 'above'
		if {($y + $mh) > ([winfo vrooty $mb] + [winfo vrootheight $mb])} {
		    set y [expr {[winfo vrooty $mb] + [winfo vrootheight $mb] \
			   + [winfo rooty $mb] - $mh}]
		}
	    }
	    left {
		incr x -$mw
	    }
	    right {
		incr x $bw
	    }
	    default {
		if {[$mb cget -style] eq ""} {
		    incr x [expr {([winfo width $mb] - \
				   [winfo reqwidth $menu])/ 2}]
		} else {
		    incr y $bh
		}
	    }
	}
	return [list $x $y $entry]
    }
}

# Popdown --
#	Post the menu and set a grab on the menu.
#
proc ttk::menubutton::Popdown {mb} {
    if {[$mb instate disabled] || [set menu [$mb cget -menu]] eq ""} {
	return
    }
    foreach {x y entry} [PostPosition $mb $menu] { break }
    tk_popup $menu $x $y $entry
}

# Pulldown (X11 only) --
#	Called when Button1 is pressed on a menubutton.
#	Posts the menu; a subsequent ButtonRelease
#	or Leave event will set a grab on the menu.
#
proc ttk::menubutton::Pulldown {mb} {
    variable State
    if {[$mb instate disabled] || [set menu [$mb cget -menu]] eq ""} {
	return
    }

    set State(pulldown) 1
    set State(oldcursor) [$mb cget -cursor]

    $mb state pressed
    $mb configure -cursor [$menu cget -cursor]
    foreach {x y entry} [PostPosition $mb $menu] { break }
    if {$entry ne {}} {
	$menu post $x $y $entry
    } else {
	$menu post $x $y
    }
    tk_menuSetFocus $menu
}

# TransferGrab (X11 only) --
#	Switch from pulldown mode (menubutton has an implicit grab)
#	to popdown mode (menu has an explicit grab).
#
................................................................................
    variable State
    if {$State(pulldown)} {
	$mb configure -cursor $State(oldcursor)
	$mb state {!pressed !active}
	set State(pulldown) 0

	set menu [$mb cget -menu]
	foreach {x y entry} [PostPosition $mb $menu] { break }
    	tk_popup $menu [winfo rootx $menu] [winfo rooty $menu]
    }
}

# FindMenuEntry --
#	Hack to support tk_optionMenus.
#	Returns the index of the menu entry with a matching -label,

Changes to library/ttk/treeview.tcl.

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    $w focus $item
    event generate $w <<TreeviewClose>>
}

## Toggle -- toggle opened/closed state of item
#
proc ttk::treeview::Toggle {w item} {






    if {[$w item $item -open]} {
	CloseItem $w $item
    } else {
	OpenItem $w $item
    }
}







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    $w focus $item
    event generate $w <<TreeviewClose>>
}

## Toggle -- toggle opened/closed state of item
#
proc ttk::treeview::Toggle {w item} {
    # don't allow toggling on indicators that
    # are not present in front of leaf items
    if {[$w children $item] == {}} {
        return
    }
    # not a leaf, toggle!
    if {[$w item $item -open]} {
	CloseItem $w $item
    } else {
	OpenItem $w $item
    }
}

Changes to macosx/README.

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    canJoinAllSpaces, moveToActiveSpace, nonActivating

Note that not all attributes are valid for all window classes.  Support for the
3 argument form was added with the Cocoa-based Tk 8.5.7, at the same time
support for some legacy Carbon-specific classes and attributes was removed
(they are still accepted by the command but no longer have any effect).

- Another command available in the tk::unsupported::MacWindowStyle namespace is
tk::unsupported::MacWindowStyle tabbingid window ?newId?  which can be used to
get or set the tabbingIdentifier for the NSWindow associated with a Tk Window.
See section 3 for details.


- A command tk::unsupported::MacWindowStyle appearance window ?newAappearance?
is available when Tk is built and run on macOS 10.14 (Mojave) or later.  In
that case the Ttk widgets all support the "Dark Mode" appearance which was
introduced in 10.14. The command accepts the following values for the optional
newAppearance option: "aqua", "darkaqua", or "auto".  If the appearance is set
to aqua or darkaqua then the window will be displayed with the corresponding
appearance independent of any preferences settings.  If it is set to "auto"
the appearance will be determined by the preferences.  This command can be
used to opt out of Dark Mode on a per-window basis.







- If you want to use Remote Debugging with Xcode, you need to set the
environment variable XCNOSTDIN to 1 in the Executable editor for Wish. That will
cause us to force closing stdin & stdout.  Otherwise, given how Xcode launches
Wish remotely, they will be left open and then Wish & gdb will fight for stdin.

3. FullScreen, Split View and Tabbed Windows
................................................................................
which is already displayed as a tab will also cause it to become a separate
window.

4. Ttk, Dark Mode and semantic colors
---------------------------------------

With the release of OSX 10.14 (Mojave), Apple introduced the DarkAqua
appearance.  Part of the implementation of the Dark Mode was to make some of
the named NSColors have dynamic values.  Apple calls these "semantic colors"
because the name does not specify a specific color, but rather refers to the
context in which the color should be used.  Tk now provides the following

semantic colors as system colors: systemTextColor, systemTextBackgroundColor,
systemSelectedTextColor, systemSelectedTextBackgroundColor,
systemControlTextColor, systemDisabledControlTextColor, and systemLabelColor.
All of these except systemLabelColor, which was introduced in 10.10, were


present in OSX 10.0. The change in 10.14 was that the RGB color value of these
colors became dynamic, meaning that the color value can change when the
application appearance changes.  In particular, when a user selects Dark Mode
in the system preferences these colors change appearance.  For example
systemTextColor is dark in Aqua and light in DarkAqua.




The default background and foreground colors of most of the Tk widgets
have been set to semantic colors, which means that the widgets will change
appearance, and remain usable, when Dark Mode is selected in the system
preferences.  However, to get a close match to the native Dark Mode style it
is recommended to use Ttk widgets when possible.

Apple's tab view and GroupBox objects delimit their content by
displaying it within a rounded rectangle with a background color that
contrasts with the background of the containing object.  This means
that the background color of a Ttk widget depends on how deeply it is
nested inside of other widgets that use contrasting backgrounds.  To
support this, there are 8 contrasting system colors named
systemTtkBackground, systemTtkBackground1, ... , systemTtkBackground7.
The systemTtkBackground color is the standard background for a dialog
window and the others match the contrasting background colors for

backgrounds which are nested to the corresponding depth.

5. Building Tcl/Tk on macOS
------------------------------

- At least macOS 10.3 is required to build Tcl and TkX11, and macOS 10.6
is required to build TkAqua.  The XCode application provides everything
needed to build Tk, but it is not necessary to install the full XCode.






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    canJoinAllSpaces, moveToActiveSpace, nonActivating

Note that not all attributes are valid for all window classes.  Support for the
3 argument form was added with the Cocoa-based Tk 8.5.7, at the same time
support for some legacy Carbon-specific classes and attributes was removed
(they are still accepted by the command but no longer have any effect).

- Another command available in the tk::unsupported::MacWindowStyle namespace is:
  tk::unsupported::MacWindowStyle tabbingid window ?newId?
which can be used to get or set the tabbingIdentifier for the NSWindow
associated with a Tk Window.  See section 3 for details.

- The command:
  tk::unsupported::MacWindowStyle appearance window ?newAappearance?
is available when Tk is built and run on macOS 10.14 (Mojave) or later.  In
that case the Ttk widgets all support the "Dark Mode" appearance which was
introduced in 10.14. The command accepts the following values for the optional
newAppearance option: "aqua", "darkaqua", or "auto".  If the appearance is set
to aqua or darkaqua then the window will be displayed with the corresponding
appearance independent of any preferences settings.  If it is set to "auto"
the appearance will be determined by the preferences.  This command can be
used to opt out of Dark Mode on a per-window basis.

- To determine the current appearance of a window in macOS 10.14 (Mojave) and
higher, one can use the command:
  tk::unsupported::MacWindowStyle isdark
The boolean return value is true if the window is currently displayed with the
dark appearance.

- If you want to use Remote Debugging with Xcode, you need to set the
environment variable XCNOSTDIN to 1 in the Executable editor for Wish. That will
cause us to force closing stdin & stdout.  Otherwise, given how Xcode launches
Wish remotely, they will be left open and then Wish & gdb will fight for stdin.

3. FullScreen, Split View and Tabbed Windows
................................................................................
which is already displayed as a tab will also cause it to become a separate
window.

4. Ttk, Dark Mode and semantic colors
---------------------------------------

With the release of OSX 10.14 (Mojave), Apple introduced the DarkAqua
appearance.  Part of the implementation of the Dark Mode was to make
some of the named NSColors have dynamic values.  Apple calls these
"semantic colors" because the name does not specify a specific color,
but rather refers to the context in which the color should be used.
Tk now provides the following semantic colors as system colors:
systemTextColor, systemTextBackgroundColor, systemSelectedTextColor,
systemSelectedTextBackgroundColor, systemControlTextColor,
systemDisabledControlTextColor, systemLabelColor, and

systemControlAccentColor.  All of these except the last two were
present in OSX 10.0 (and those two are simulated in systems where they
do not exist).  The change in 10.14 was that the RGB color value of
these colors became dynamic, meaning that the color value can change
when the application appearance changes.  In particular, when a user
selects Dark Mode in the system preferences these colors change
appearance.  For example systemTextColor is dark in Aqua and light in
DarkAqua.  One additional color, systemSelectedTabTextColor, does not
exist in macOS but is used by Tk to match the different colors used
for Notebook tab text in different OS versions.

The default background and foreground colors of most of the Tk widgets
have been set to semantic colors, which means that the widgets will change
appearance, and remain usable, when Dark Mode is selected in the system
preferences.  However, to get a close match to the native Dark Mode style it
is recommended to use Ttk widgets when possible.

Apple's tab view and GroupBox objects delimit their content by
displaying it within a rounded rectangle with a background color that
contrasts with the background of the containing object.  This means
that the background color of a Ttk widget depends on how deeply it is
nested inside of other widgets that use contrasting backgrounds.  To
support this, there are 8 contrasting system colors named
systemWindowBackgroundColor, and systemWindowBackgroundColor1 - 7.
The systemWindowBackgroundColor is the standard background for a
dialog window and the others match the contrasting background colors
used in ttk::notebooks and ttk::labelframes which are nested to the
corresponding depth.

5. Building Tcl/Tk on macOS
------------------------------

- At least macOS 10.3 is required to build Tcl and TkX11, and macOS 10.6
is required to build TkAqua.  The XCode application provides everything
needed to build Tk, but it is not necessary to install the full XCode.

Changes to macosx/tkMacOSXButton.c.

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/*
 * tkMacOSXButton.c --
 *
 *	This file implements the Macintosh specific portion of the
 *	button widgets.
 *
 * Copyright (c) 1996-1997 by Sun Microsystems, Inc.
 * Copyright 2001, Apple Computer, Inc.
 * Copyright (c) 2006-2007 Daniel A. Steffen <[email protected]>
 * Copyright 2007 Revar Desmera.
 * Copyright 2015 Kevin Walzer/WordTech Communications LLC.
 * Copyright 2015 Marc Culler.
................................................................................
    Tcl_TimerToken defaultPulseHandler;
} MacButton;

/*
 * Forward declarations for procedures defined later in this file:
 */


static void ButtonBackgroundDrawCB (const HIRect *btnbounds, MacButton *ptr,
        SInt16 depth, Boolean isColorDev);

static void ButtonContentDrawCB (const HIRect *bounds, ThemeButtonKind kind,
        const HIThemeButtonDrawInfo *info, MacButton *ptr, SInt16 depth,
	Boolean isColorDev);
static void ButtonEventProc(ClientData clientData, XEvent *eventPtr);

static void TkMacOSXComputeButtonParams (TkButton * butPtr, ThemeButtonKind* btnkind,

	HIThemeButtonDrawInfo* drawinfo);
static int TkMacOSXComputeButtonDrawParams (TkButton * butPtr, DrawParams * dpPtr);

static void TkMacOSXDrawButton (MacButton *butPtr, GC gc, Pixmap pixmap);

static void DrawButtonImageAndText(TkButton* butPtr);
static void PulseDefaultButtonProc(ClientData clientData);


/*
 * The class procedure table for the button widgets.
 */

const Tk_ClassProcs tkpButtonProcs = {
    sizeof(Tk_ClassProcs),	/* size */
    TkButtonWorldChanged,	/* worldChangedProc */
};

static int bCount;

/*
 *----------------------------------------------------------------------
 *
 * TkpButtonSetDefaults --
 *
 *	This procedure is invoked before option tables are created for
 *	buttons. It modifies some of the default values to match the current
 *	values defined for this platform.
 *
 * Results:
 *	Some of the default values in *specPtr are modified.
 *
 * Side effects:
 *	Updates some of.
 *
 *----------------------------------------------------------------------
 */

void
TkpButtonSetDefaults()
{
/*No-op.*/
}

 
/*
 *----------------------------------------------------------------------
 *
 * TkpCreateButton --
 *
 *	Allocate a new TkButton structure.
................................................................................
 *----------------------------------------------------------------------
 */

TkButton *
TkpCreateButton(
    Tk_Window tkwin)
{
    MacButton *macButtonPtr = (MacButton *) ckalloc(sizeof(MacButton));

    Tk_CreateEventHandler(tkwin, ActivateMask,
	    ButtonEventProc, (ClientData) macButtonPtr);
    macButtonPtr->id = bCount++;
    macButtonPtr->flags = FIRST_DRAW;
    macButtonPtr->btnkind = kThemePushButton;
    macButtonPtr->defaultPulseHandler = NULL;
    bzero(&macButtonPtr->drawinfo, sizeof(macButtonPtr->drawinfo));
    bzero(&macButtonPtr->lastdrawinfo, sizeof(macButtonPtr->lastdrawinfo));

    return (TkButton *)macButtonPtr;
}
 
/*
 *----------------------------------------------------------------------
 *
 * TkpDisplayButton --
 *
 *	This procedure is invoked to display a button widget. It is
 *	normally invoked as an idle handler.
 *
 * Results:
 *	None.
 *
 * Side effects:
 *	Commands are output to X to display the button in its
 *	current mode. The REDRAW_PENDING flag is cleared.
 *
 *----------------------------------------------------------------------
 */

void
TkpDisplayButton(
    ClientData clientData)	/* Information about widget. */
{
    MacButton *macButtonPtr = (MacButton *) clientData;
    TkButton *butPtr = (TkButton *) clientData;
    Tk_Window tkwin = butPtr->tkwin;
    Pixmap pixmap;
    DrawParams* dpPtr = &macButtonPtr->drawParams;
    int needhighlight = 0;




    butPtr->flags &= ~REDRAW_PENDING;
    if ((butPtr->tkwin == NULL) || !Tk_IsMapped(tkwin)) {
	return;
    }
    pixmap = (Pixmap) Tk_WindowId(tkwin);
    TkMacOSXSetUpClippingRgn(Tk_WindowId(tkwin));

    if (TkMacOSXComputeButtonDrawParams(butPtr, dpPtr) ) {
	macButtonPtr->useTkText = 0;
    } else {
	macButtonPtr->useTkText = 1;
    }


    /*
     * Set up clipping region. Make sure the we are using the port
     * for this button, or we will set the wrong window's clip.
     */








    if (macButtonPtr->useTkText) {
	if (butPtr->type == TYPE_BUTTON) {
	    Tk_Fill3DRectangle(tkwin, pixmap, butPtr->highlightBorder, 0, 0,
		    Tk_Width(tkwin), Tk_Height(tkwin), 0, TK_RELIEF_FLAT);
	} else {
	    Tk_Fill3DRectangle(tkwin, pixmap, butPtr->normalBorder, 0, 0,
		    Tk_Width(tkwin), Tk_Height(tkwin), 0, TK_RELIEF_FLAT);
	}


        /* Display image or bitmap or text for labels or custom controls.  */


	DrawButtonImageAndText(butPtr);
        needhighlight  = 1;
    } else {

        /* Draw the native portion of the buttons. */


        TkMacOSXDrawButton(macButtonPtr, dpPtr->gc, pixmap);


        /* Draw highlight border, if needed. */


        if (butPtr->highlightWidth < 3) {
            needhighlight = 1;
        }
    }


    /* Draw highlight border, if needed. */


    if (needhighlight) {

        if ((butPtr->flags & GOT_FOCUS)) {
            Tk_Draw3DRectangle(tkwin, pixmap, butPtr->normalBorder, 0, 0,
                Tk_Width(tkwin), Tk_Height(tkwin),





                butPtr->highlightWidth, TK_RELIEF_SOLID);
        }
    }
}
 
/*
 *----------------------------------------------------------------------
 *
 * TkpComputeButtonGeometry --
 *
 *	After changes in a button's text or bitmap, this procedure
 *	recomputes the button's geometry and passes this information
 *	along to the geometry manager for the window.
 *
 * Results:
 *	None.
 *
 * Side effects:
 *	The button's window may change size.
 *
................................................................................

void
TkpComputeButtonGeometry(
    TkButton *butPtr)		/* Button whose geometry may have changed. */
{
    int width = 0, height = 0, charWidth = 1, haveImage = 0, haveText = 0;
    int txtWidth = 0, txtHeight = 0;
    MacButton *mbPtr = (MacButton*)butPtr;
    Tk_FontMetrics fm;
    char *text = Tcl_GetString(butPtr->textPtr);

    TkMacOSXComputeButtonParams(butPtr, &mbPtr->btnkind, &mbPtr->drawinfo);

    /*
     * If the indicator is on, get its size.
     */

    if (butPtr->indicatorOn) {
      switch (butPtr->type) {
      case TYPE_RADIO_BUTTON:
	GetThemeMetric(kThemeMetricRadioButtonWidth, (SInt32 *)&butPtr->indicatorDiameter);

	  break;
      case TYPE_CHECK_BUTTON:
	GetThemeMetric(kThemeMetricCheckBoxWidth, (SInt32 *)&butPtr->indicatorDiameter);

	  break;
      default:
	break;
      }


      /* Allow 2px extra space next to the indicator. */


      butPtr->indicatorSpace = butPtr->indicatorDiameter + 2;
    } else {
      butPtr->indicatorSpace = 0;
      butPtr->indicatorDiameter = 0;
    }

    if (butPtr->image != NULL) {
	Tk_SizeOfImage(butPtr->image, &width, &height);
	haveImage = 1;
    } else if (butPtr->bitmap != None) {
	Tk_SizeOfBitmap(butPtr->display, butPtr->bitmap, &width, &height);
................................................................................
	txtWidth = butPtr->textWidth + 2*butPtr->padX;
	txtHeight = butPtr->textHeight + 2*butPtr->padY;
	haveText = 1;
    }

    if (haveImage && haveText) { /* Image and Text */
	switch ((enum compound) butPtr->compound) {
	    case COMPOUND_TOP:
	    case COMPOUND_BOTTOM:

		/*
		 * Image is above or below text.
		 */

		height += txtHeight + butPtr->padY;
		width = (width > txtWidth ? width : txtWidth);
		break;
	    case COMPOUND_LEFT:
	    case COMPOUND_RIGHT:

		/*
		 * Image is left or right of text.
		 */

		width += txtWidth + 2*butPtr->padX;
		height = (height > txtHeight ? height : txtHeight);
		break;
	    case COMPOUND_CENTER:

		/*
		 * Image and text are superimposed.
		 */

		width = (width > txtWidth ? width : txtWidth);
		height = (height > txtHeight ? height : txtHeight);
		break;
	    default:
		break;
	}
	width += butPtr->indicatorSpace;
    } else if (haveImage) { /* Image only */
	width = butPtr->width > 0 ? butPtr->width : width + butPtr->indicatorSpace;
	height = butPtr->height > 0 ? butPtr->height : height;
	if (butPtr->type == TYPE_BUTTON) {

	    /* Allow room to shift the image. */

	    width += 2;
	    height += 2;
	}
    } else { /* Text only */
        width = txtWidth + butPtr->indicatorSpace;
	height = txtHeight;
	if (butPtr->width > 0) {
................................................................................
    }

    butPtr->inset = butPtr->borderWidth + butPtr->highlightWidth;

    width += butPtr->inset*2;
    height += butPtr->inset*2;
    if ([NSApp macMinorVersion] == 6) {
      width += 12;
    }
    if (mbPtr->btnkind == kThemePushButton) {
        HIRect tmpRect;
    	HIRect contBounds;

	/*
	 * A PushButton has a minimum size.  We make sure that we
	 * are not underestimating the size by requesting the content
	 * size of a Pushbutton whose overall size is our content size
	 * expanded by the standard padding.
	 */
	
	tmpRect = CGRectMake(0, 0, width + 2*HI_PADX, height + 2*HI_PADY);
        HIThemeGetButtonContentBounds(&tmpRect, &mbPtr->drawinfo, &contBounds);
        if (height < contBounds.size.height) {
	    height = contBounds.size.height;
        }
        if (width < contBounds.size.width) {
	    width = contBounds.size.width;
................................................................................
        }
	height += 2*HI_PADY;
	width += 2*HI_PADX;
    }
    Tk_GeometryRequest(butPtr->tkwin, width, height);
    Tk_SetInternalBorder(butPtr->tkwin, butPtr->inset);
}

/*
 *----------------------------------------------------------------------
 *
 * DrawButtonImageAndText --
 *
 *        Draws the image and text associated with a button or label.
 *
 * Results:
 *        None.
 *
 * Side effects:
 *        The image and text are drawn.
 *
 *----------------------------------------------------------------------
 */
static void
DrawButtonImageAndText(
    TkButton* butPtr)
{

    MacButton *mbPtr = (MacButton*)butPtr;
    Tk_Window  tkwin  = butPtr->tkwin;
    Pixmap     pixmap;
    int        haveImage = 0;
    int        haveText = 0;
    int        imageWidth = 0;
    int        imageHeight = 0;
    int        imageXOffset = 0;
    int        imageYOffset = 0;
    int        textXOffset = 0;
    int        textYOffset = 0;
    int        width = 0;
    int        height = 0;
    int        fullWidth = 0;
    int        fullHeight = 0;
    int        pressed = 0;


    if (tkwin == NULL || !Tk_IsMapped(tkwin)) {
        return;
    }

    DrawParams* dpPtr = &mbPtr->drawParams;
    pixmap = (Pixmap)Tk_WindowId(tkwin);

    if (butPtr->image != None) {
        Tk_SizeOfImage(butPtr->image, &width, &height);
        haveImage = 1;
    } else if (butPtr->bitmap != None) {
        Tk_SizeOfBitmap(butPtr->display, butPtr->bitmap, &width, &height);
        haveImage = 1;
    }

    imageWidth  = width;
    imageHeight = height;

    if (mbPtr->drawinfo.state == kThemeStatePressed) {

        /* Offset bitmaps by a bit when the button is pressed. */


        pressed = 1;
    }

    haveText = (butPtr->textWidth != 0 && butPtr->textHeight != 0);
    if (haveImage && haveText) { /* Image and Text */
        int x;
        int y;
        textXOffset = 0;
        textYOffset = 0;
        fullWidth = 0;
        fullHeight = 0;

        switch ((enum compound) butPtr->compound) {
	case COMPOUND_TOP:
	case COMPOUND_BOTTOM: {
	  /* Image is above or below text */
	  if (butPtr->compound == COMPOUND_TOP) {
	    textYOffset = height + butPtr->padY;
	  } else {
	    imageYOffset = butPtr->textHeight + butPtr->padY;
	  }
	  fullHeight = height + butPtr->textHeight + butPtr->padY;
	  fullWidth = (width > butPtr->textWidth ? width :
		       butPtr->textWidth);
	  textXOffset = (fullWidth - butPtr->textWidth)/2;
	  imageXOffset = (fullWidth - width)/2;
	  break;
	}
	case COMPOUND_LEFT:
	case COMPOUND_RIGHT: {
	  /*
	   * Image is left or right of text
	   */

	  if (butPtr->compound == COMPOUND_LEFT) {
	    textXOffset = width + butPtr->padX;
	  } else {
	    imageXOffset = butPtr->textWidth + butPtr->padX;
	  }
	  fullWidth = butPtr->textWidth + butPtr->padX + width;
	  fullHeight = (height > butPtr->textHeight ? height :
                        butPtr->textHeight);
	  textYOffset = (fullHeight - butPtr->textHeight)/2;
	  imageYOffset = (fullHeight - height)/2;
	  break;
	}
	case COMPOUND_CENTER: {
	  /*
	   * Image and text are superimposed
	   */

	  fullWidth = (width > butPtr->textWidth ? width :
		       butPtr->textWidth);
	  fullHeight = (height > butPtr->textHeight ? height :
                        butPtr->textHeight);
	  textXOffset = (fullWidth - butPtr->textWidth)/2;
	  imageXOffset = (fullWidth - width)/2;
	  textYOffset = (fullHeight - butPtr->textHeight)/2;
	  imageYOffset = (fullHeight - height)/2;
	  break;
	}
	default:
	  break;
	}

        TkComputeAnchor(butPtr->anchor, tkwin,
                butPtr->padX + butPtr->borderWidth,
                butPtr->padY + butPtr->borderWidth,
                fullWidth + butPtr->indicatorSpace, fullHeight, &x, &y);
	x += butPtr->indicatorSpace;
................................................................................
            x += dpPtr->offset;
            y += dpPtr->offset;
        }
        imageXOffset += x;
        imageYOffset += y;

        if (butPtr->image != NULL) {
	  if ((butPtr->selectImage != NULL) &&
	      (butPtr->flags & SELECTED)) {
	    Tk_RedrawImage(butPtr->selectImage, 0, 0,
			   width, height, pixmap, imageXOffset, imageYOffset);
	  } else if ((butPtr->tristateImage != NULL) &&
		     (butPtr->flags & TRISTATED)) {
	    Tk_RedrawImage(butPtr->tristateImage, 0, 0,
			   width, height, pixmap, imageXOffset, imageYOffset);
	  } else {
	    Tk_RedrawImage(butPtr->image, 0, 0, width,
			   height, pixmap, imageXOffset, imageYOffset);
	  }
        } else {
	  XSetClipOrigin(butPtr->display, dpPtr->gc,
			 imageXOffset, imageYOffset);
	  XCopyPlane(butPtr->display, butPtr->bitmap, pixmap, dpPtr->gc,
		     0, 0, (unsigned int) width, (unsigned int) height,
		     imageXOffset, imageYOffset, 1);
	  XSetClipOrigin(butPtr->display, dpPtr->gc, 0, 0);
        }

	y += 1; /* Tweak to match native buttons. */
        Tk_DrawTextLayout(butPtr->display, pixmap,
                dpPtr->gc, butPtr->textLayout,
                x + textXOffset, y + textYOffset, 0, -1);
        Tk_UnderlineTextLayout(butPtr->display, pixmap, dpPtr->gc,
                butPtr->textLayout,
                x + textXOffset, y + textYOffset,
                butPtr->underline);
    } else if (haveImage) { /* Image only */
        int x = 0;
	int y;

	TkComputeAnchor(butPtr->anchor, tkwin,
			butPtr->padX + butPtr->borderWidth,
			butPtr->padY + butPtr->borderWidth,
			width + butPtr->indicatorSpace,
			height, &x, &y);
        x += butPtr->indicatorSpace;
	if (pressed) {
	  x += dpPtr->offset;
	  y += dpPtr->offset;
	}
	imageXOffset += x;
	imageYOffset += y;

	if (butPtr->image != NULL) {

	  if ((butPtr->selectImage != NULL) &&
	      (butPtr->flags & SELECTED)) {
	    Tk_RedrawImage(butPtr->selectImage, 0, 0, width,
			   height, pixmap, imageXOffset, imageYOffset);
	  } else if ((butPtr->tristateImage != NULL) &&
		     (butPtr->flags & TRISTATED)) {
	    Tk_RedrawImage(butPtr->tristateImage, 0, 0, width,
			   height, pixmap, imageXOffset, imageYOffset);
	  } else {
	    Tk_RedrawImage(butPtr->image, 0, 0, width, height,
			   pixmap, imageXOffset, imageYOffset);
	  }
	} else {
	  XSetClipOrigin(butPtr->display, dpPtr->gc, x, y);
	  XCopyPlane(butPtr->display, butPtr->bitmap,
		     pixmap, dpPtr->gc,
		     0, 0, (unsigned int) width,
		     (unsigned int) height,
		     imageXOffset, imageYOffset, 1);
	  XSetClipOrigin(butPtr->display, dpPtr->gc, 0, 0);
	}
    } else { /* Text only */
        int x, y;

	TkComputeAnchor(butPtr->anchor, tkwin, butPtr->padX, butPtr->padY,
			butPtr->textWidth + butPtr->indicatorSpace,
			  butPtr->textHeight, &x, &y);
	x += butPtr->indicatorSpace;
	y += 1; /* Tweak to match native buttons */
	Tk_DrawTextLayout(butPtr->display, pixmap, dpPtr->gc, butPtr->textLayout,
			  x, y, 0, -1);
    }

    /*
     * If the button is disabled with a stipple rather than a special
     * foreground color, generate the stippled effect.  If the widget
     * is selected and we use a different background color when selected,
     * must temporarily modify the GC so the stippling is the right color.
     */

    if (mbPtr->useTkText) {
        if ((butPtr->state == STATE_DISABLED)
                && ((butPtr->disabledFg == NULL) || (butPtr->image != NULL))) {
            if ((butPtr->flags & SELECTED) && !butPtr->indicatorOn
                    && (butPtr->selectBorder != NULL)) {
................................................................................

        /*
         * Draw the border and traversal highlight last.  This way, if the
         * button's contents overflow they'll be covered up by the border.
         */

        if (dpPtr->relief != TK_RELIEF_FLAT) {
            int inset = butPtr->highlightWidth;

            Tk_Draw3DRectangle(tkwin, pixmap, dpPtr->border, inset, inset,
                Tk_Width(tkwin) - 2*inset, Tk_Height(tkwin) - 2*inset,
                butPtr->borderWidth, dpPtr->relief);
        }
    }

   }




/*
 *----------------------------------------------------------------------
 *
 * TkpDestroyButton --
 *
 *	Free data structures associated with the button control.
 *
................................................................................
 */

void
TkpDestroyButton(
    TkButton *butPtr)
{
    MacButton *mbPtr = (MacButton *) butPtr; /* Mac button. */

    if (mbPtr->defaultPulseHandler) {
        Tcl_DeleteTimerHandler(mbPtr->defaultPulseHandler);
    }
}
 
/*
 *--------------------------------------------------------------
 *
 * TkMacOSXDrawButton --
 *
 *        This function draws the tk button using Mac controls
 *        In addition, this code may apply custom colors passed
 *        in the TkButton.
 *
 * Results:
 *        None.
 *
 * Side effects:
 *      The control is created, or reinitialised as needed
 *
................................................................................
TkMacOSXDrawButton(
    MacButton *mbPtr,    /* Mac button. */
    GC gc,               /* The GC we are drawing into - needed for
                          * the bevel button */
    Pixmap pixmap)       /* The pixmap we are drawing into - needed
                          * for the bevel button */
{
    TkButton * butPtr = ( TkButton *)mbPtr;
    TkWindow * winPtr;
    HIRect      cntrRect;
    TkMacOSXDrawingContext dc;
    DrawParams* dpPtr = &mbPtr->drawParams;
    int useNewerHITools = 1;

    winPtr = (TkWindow *)butPtr->tkwin;

    TkMacOSXComputeButtonParams(butPtr, &mbPtr->btnkind, &mbPtr->drawinfo);

    cntrRect = CGRectMake(winPtr->privatePtr->xOff,
			  winPtr->privatePtr->yOff,
			  Tk_Width(butPtr->tkwin),
			  Tk_Height(butPtr->tkwin));

     cntrRect = CGRectInset(cntrRect,  butPtr->inset, butPtr->inset);

    if (useNewerHITools == 1) {
        HIRect contHIRec;
        static HIThemeButtonDrawInfo hiinfo;

        ButtonBackgroundDrawCB(&cntrRect, mbPtr, 32, true);

	if (!TkMacOSXSetupDrawingContext(pixmap, dpPtr->gc, 1, &dc)) {
	    return;
	}

        hiinfo.version = 0;
        hiinfo.state = mbPtr->drawinfo.state;
        hiinfo.kind  = mbPtr->btnkind;
        hiinfo.value = mbPtr->drawinfo.value;
        hiinfo.adornment = mbPtr->drawinfo.adornment;
        hiinfo.animation.time.current = CFAbsoluteTimeGetCurrent();
        if (hiinfo.animation.time.start == 0) {
            hiinfo.animation.time.start = hiinfo.animation.time.current;
        }

	/*
	 * To avoid buttons with white text on a white background, we always
	 * set the state to inactive in Dark Mode.  It isn't perfect but
	 * it is usable.  Using a ttk::button would be a better choice,
	 * however.
	 */

	if (TkMacOSXInDarkMode(butPtr->tkwin)) {
	    hiinfo.state = kThemeStateInactive;
	}
	HIThemeDrawButton(&cntrRect, &hiinfo, dc.context, kHIThemeOrientationNormal,
			  &contHIRec);

	TkMacOSXRestoreDrawingContext(&dc);
        ButtonContentDrawCB(&contHIRec, mbPtr->btnkind, &mbPtr->drawinfo,
			    (MacButton *)mbPtr, 32, true);

    } else {
	if (!TkMacOSXSetupDrawingContext(pixmap, dpPtr->gc, 1, &dc)) {
	    return;
	}

	TkMacOSXRestoreDrawingContext(&dc);
    }
................................................................................
}
 
/*
 *--------------------------------------------------------------
 *
 * ButtonBackgroundDrawCB --
 *
 *        This function draws the background that
 *        lies under checkboxes and radiobuttons.
 *
 * Results:
 *        None.
 *
 * Side effects:
 *        The background gets updated to the current color.
 *
 *--------------------------------------------------------------
 */

static void
ButtonBackgroundDrawCB (
    const HIRect * btnbounds,
    MacButton *ptr,
    SInt16 depth,
    Boolean isColorDev)
{
    MacButton* mbPtr = (MacButton*)ptr;
    TkButton* butPtr = (TkButton*)mbPtr;
    Tk_Window  tkwin  = butPtr->tkwin;
    Pixmap pixmap;
    int usehlborder = 0;

    if (tkwin == NULL || !Tk_IsMapped(tkwin)) {
        return;
    }
    pixmap = (Pixmap)Tk_WindowId(tkwin);

    if (butPtr->type != TYPE_LABEL) {
        switch (mbPtr->btnkind) {
            case kThemeSmallBevelButton:
            case kThemeBevelButton:
            case kThemeRoundedBevelButton:
            case kThemePushButton:
                usehlborder = 1;
                break;
        }
    }
    if (usehlborder) {
        Tk_Fill3DRectangle(tkwin, pixmap, butPtr->highlightBorder, 0, 0,
            Tk_Width(tkwin), Tk_Height(tkwin), 0, TK_RELIEF_FLAT);
    } else {
        Tk_Fill3DRectangle(tkwin, pixmap, butPtr->normalBorder, 0, 0,
................................................................................
    const HIRect * btnbounds,
    ThemeButtonKind kind,
    const HIThemeButtonDrawInfo *drawinfo,
    MacButton *ptr,
    SInt16 depth,
    Boolean isColorDev)
{
    TkButton  *butPtr = (TkButton *)ptr;
    Tk_Window  tkwin  = butPtr->tkwin;

    if (tkwin == NULL || !Tk_IsMapped(tkwin)) {
        return;
    }

    /*
     * Overlay Tk elements over button native region: drawing elements
     * within button boundaries/native region causes unpredictable metrics.
     */

    DrawButtonImageAndText( butPtr);
}
 
/*
 *--------------------------------------------------------------
 *
 * ButtonEventProc --
 *
 *	This procedure is invoked by the Tk dispatcher for various
 *	events on buttons.
 *
 * Results:
 *	None.
 *
 * Side effects:
 *	When it gets exposed, it is redisplayed.
 *
................................................................................
 */

static void
ButtonEventProc(
    ClientData clientData,	/* Information about window. */
    XEvent *eventPtr)		/* Information about event. */
{
    TkButton *buttonPtr = (TkButton *) clientData;
    MacButton *mbPtr = (MacButton *) clientData;

    if (eventPtr->type == ActivateNotify
	    || eventPtr->type == DeactivateNotify) {
	if ((buttonPtr->tkwin == NULL) || (!Tk_IsMapped(buttonPtr->tkwin))) {
	    return;
	}
	if (eventPtr->type == ActivateNotify) {
	    mbPtr->flags |= ACTIVE;
	} else {
	    mbPtr->flags &= ~ACTIVE;
	}
	if ((buttonPtr->flags & REDRAW_PENDING) == 0) {
	    Tcl_DoWhenIdle(TkpDisplayButton, (ClientData) buttonPtr);
	    buttonPtr->flags |= REDRAW_PENDING;
	}
    }
}
 
/*
 *----------------------------------------------------------------------
 *
 * TkMacOSXComputeButtonParams --
 *
 *      This procedure computes the various parameters used
 *        when creating a Carbon Appearance control.
 *	These are determined by the various tk button parameters
 *
 * Results:
 *	None.
 *
 * Side effects:
 *        Sets the btnkind and drawinfo parameters
 *
 *----------------------------------------------------------------------
 */

static void
TkMacOSXComputeButtonParams(
        TkButton * butPtr,
        ThemeButtonKind* btnkind,
	HIThemeButtonDrawInfo *drawinfo)
{
    MacButton *mbPtr = (MacButton *)butPtr;

    if (butPtr->borderWidth <= 2) {
        *btnkind = kThemeSmallBevelButton;
    } else if (butPtr->borderWidth == 3) {
        *btnkind = kThemeBevelButton;
    } else if (butPtr->borderWidth == 4) {
        *btnkind = kThemeRoundedBevelButton;
    } else {
        *btnkind = kThemePushButton;
    }

    if ((butPtr->image == None) && (butPtr->bitmap == None)) {
        switch (butPtr->type) {
            case TYPE_BUTTON:
                *btnkind = kThemePushButton;
                break;
            case TYPE_RADIO_BUTTON:
                if (butPtr->borderWidth <= 1) {
                    *btnkind = kThemeSmallRadioButton;
		} else {
                    *btnkind = kThemeRadioButton;
		}
		break;
	    case TYPE_CHECK_BUTTON:
                if (butPtr->borderWidth <= 1) {
                    *btnkind = kThemeSmallCheckBox;
	        } else {
                    *btnkind = kThemeCheckBox;
		}
		break;
	}
    }

    if (butPtr->indicatorOn) {
        switch (butPtr->type) {
            case TYPE_RADIO_BUTTON:
                if (butPtr->borderWidth <= 1) {
                    *btnkind = kThemeSmallRadioButton;
                } else {
                    *btnkind = kThemeRadioButton;
                }
                break;
            case TYPE_CHECK_BUTTON:
                if (butPtr->borderWidth <= 1) {
                    *btnkind = kThemeSmallCheckBox;
                } else {
                    *btnkind = kThemeCheckBox;
                }
                break;
        }
    } else {
        if (butPtr->type == TYPE_RADIO_BUTTON ||
	    butPtr->type == TYPE_CHECK_BUTTON
	) {
	    if (*btnkind == kThemePushButton) {
		*btnkind = kThemeBevelButton;
	    }
        }
    }

    if (butPtr->flags & SELECTED) {
................................................................................
    }

    drawinfo->adornment = kThemeAdornmentNone;
    if (butPtr->defaultState == DEFAULT_ACTIVE) {
        drawinfo->adornment |= kThemeAdornmentDefault;
        if (!mbPtr->defaultPulseHandler) {
            mbPtr->defaultPulseHandler = Tcl_CreateTimerHandler(
                    PULSE_TIMER_MSECS, PulseDefaultButtonProc,
                    (ClientData) butPtr);
        }
    } else if (mbPtr->defaultPulseHandler) {
        Tcl_DeleteTimerHandler(mbPtr->defaultPulseHandler);
    }
    if (butPtr->highlightWidth >= 3) {
        if ((butPtr->flags & GOT_FOCUS)) {
            drawinfo->adornment |= kThemeAdornmentFocus;
................................................................................
}
 
/*
 *----------------------------------------------------------------------
 *
 * TkMacOSXComputeButtonDrawParams --
 *
 *	This procedure computes the various parameters used
 *	when drawing a button
 *	These are determined by the various tk button parameters
 *
 * Results:
 *	1 if control will be used, 0 otherwise.
 *
 * Side effects:
 *	Sets the button draw parameters
 *
................................................................................
 */

static int
TkMacOSXComputeButtonDrawParams(
    TkButton *butPtr,
    DrawParams *dpPtr)
{
    MacButton *mbPtr = (MacButton *)butPtr;

    dpPtr->hasImageOrBitmap = ((butPtr->image != NULL)
	    || (butPtr->bitmap != None));

    if (butPtr->type != TYPE_LABEL) {
        dpPtr->offset = 0;
        if (dpPtr->hasImageOrBitmap) {
            switch (mbPtr->btnkind) {
                case kThemeSmallBevelButton:
                case kThemeBevelButton:
                case kThemeRoundedBevelButton:
                case kThemePushButton:
                    dpPtr->offset = 1;
                    break;
            }
        }
    }

    dpPtr->border = butPtr->normalBorder;
    if ((butPtr->state == STATE_DISABLED) && (butPtr->disabledFg != NULL)) {
	dpPtr->gc = butPtr->disabledGC;
................................................................................

    if ((butPtr->flags & SELECTED) && (butPtr->state != STATE_ACTIVE)
	    && (butPtr->selectBorder != NULL) && !butPtr->indicatorOn) {
	dpPtr->border = butPtr->selectBorder;
    }

    /*
     * Override the relief specified for the button if this is a
     * checkbutton or radiobutton and there's no indicator.
     */

    dpPtr->relief = butPtr->relief;

    if ((butPtr->type >= TYPE_CHECK_BUTTON) && !butPtr->indicatorOn) {
	if (!dpPtr->hasImageOrBitmap) {
	    dpPtr->relief = (butPtr->flags & SELECTED) ? TK_RELIEF_SUNKEN
		    : TK_RELIEF_RAISED;
	}
    }

    if (butPtr->type != TYPE_LABEL &&
	(butPtr->type == TYPE_BUTTON ||
	 butPtr->indicatorOn         ||
	 dpPtr->hasImageOrBitmap)) {
	
	/*
	 * Draw this widget as a native control.
	 */
	
	return 1;
    } else {

	/*
	 * Draw this widget from scratch.
	 */
	
	return 0;
    }
}
 
/*
 *--------------------------------------------------------------
 *
................................................................................
 *     None.
 *
 * Side effects:
 *     Sets a timer to run itself again.
 *
 *--------------------------------------------------------------
 */

static void
PulseDefaultButtonProc(ClientData clientData)
{
    MacButton *mbPtr = (MacButton *)clientData;

    TkpDisplayButton(clientData);
    mbPtr->defaultPulseHandler = Tcl_CreateTimerHandler(
            PULSE_TIMER_MSECS, PulseDefaultButtonProc, clientData);
}

/*
 * Local Variables:
 * mode: objc
 * c-basic-offset: 4
 * fill-column: 79
 * coding: utf-8
 * End:
 */


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/*
 * tkMacOSXButton.c --
 *
 *	This file implements the Macintosh specific portion of the button
 *	widgets.
 *
 * Copyright (c) 1996-1997 by Sun Microsystems, Inc.
 * Copyright 2001, Apple Computer, Inc.
 * Copyright (c) 2006-2007 Daniel A. Steffen <[email protected]>
 * Copyright 2007 Revar Desmera.
 * Copyright 2015 Kevin Walzer/WordTech Communications LLC.
 * Copyright 2015 Marc Culler.
................................................................................
    Tcl_TimerToken defaultPulseHandler;
} MacButton;

/*
 * Forward declarations for procedures defined later in this file:
 */


static void	ButtonBackgroundDrawCB(const HIRect *btnbounds,
		    MacButton *ptr, SInt16 depth, Boolean isColorDev);
static void	ButtonContentDrawCB(const HIRect *bounds,
		    ThemeButtonKind kind,
		    const HIThemeButtonDrawInfo *info, MacButton *ptr,
		    SInt16 depth, Boolean isColorDev);
static void	ButtonEventProc(ClientData clientData,
		    XEvent *eventPtr);
static void	TkMacOSXComputeButtonParams(TkButton *butPtr,
		    ThemeButtonKind *btnkind,
		    HIThemeButtonDrawInfo *drawinfo);
static int	TkMacOSXComputeButtonDrawParams(TkButton *butPtr,
		    DrawParams * dpPtr);
static void	TkMacOSXDrawButton(MacButton *butPtr, GC gc,
		    Pixmap pixmap);
static void	DrawButtonImageAndText(TkButton *butPtr);
static void	PulseDefaultButtonProc(ClientData clientData);


/*
 * The class procedure table for the button widgets.
 */

const Tk_ClassProcs tkpButtonProcs = {
    sizeof(Tk_ClassProcs),	/* size */
    TkButtonWorldChanged,	/* worldChangedProc */
};

static int bCount;
 
/*
 *----------------------------------------------------------------------
 *
 * TkpButtonSetDefaults --
 *
 *	This procedure is invoked before option tables are created for buttons.
 *	It modifies some of the default values to match the current values
 *	defined for this platform.
 *
 * Results:
 *	Some of the default values in *specPtr are modified.
 *
 * Side effects:
 *	Updates some of.
 *
 *----------------------------------------------------------------------
 */

void
TkpButtonSetDefaults()
{
    /*No-op.*/
}

 
/*
 *----------------------------------------------------------------------
 *
 * TkpCreateButton --
 *
 *	Allocate a new TkButton structure.
................................................................................
 *----------------------------------------------------------------------
 */

TkButton *
TkpCreateButton(
    Tk_Window tkwin)
{
    MacButton *macButtonPtr = ckalloc(sizeof(MacButton));

    Tk_CreateEventHandler(tkwin, ActivateMask,
	    ButtonEventProc, macButtonPtr);
    macButtonPtr->id = bCount++;
    macButtonPtr->flags = FIRST_DRAW;
    macButtonPtr->btnkind = kThemePushButton;
    macButtonPtr->defaultPulseHandler = NULL;
    bzero(&macButtonPtr->drawinfo, sizeof(macButtonPtr->drawinfo));
    bzero(&macButtonPtr->lastdrawinfo, sizeof(macButtonPtr->lastdrawinfo));

    return (TkButton *) macButtonPtr;
}
 
/*
 *----------------------------------------------------------------------
 *
 * TkpDisplayButton --
 *
 *	This procedure is invoked to display a button widget. It is normally
 *	invoked as an idle handler.
 *
 * Results:
 *	None.
 *
 * Side effects:
 *	Commands are output to X to display the button in its current mode. The
 *	REDRAW_PENDING flag is cleared.
 *
 *----------------------------------------------------------------------
 */

void
TkpDisplayButton(
    ClientData clientData)	/* Information about widget. */
{
    MacButton *macButtonPtr = clientData;
    TkButton *butPtr = clientData;
    Tk_Window tkwin = butPtr->tkwin;
    Pixmap pixmap;
    DrawParams* dpPtr = &macButtonPtr->drawParams;
    int needhighlight = 0;

    if (butPtr->flags & BUTTON_DELETED) {
	return;
    }
    butPtr->flags &= ~REDRAW_PENDING;
    if ((butPtr->tkwin == NULL) || !Tk_IsMapped(tkwin)) {
	return;
    }
    pixmap = (Pixmap) Tk_WindowId(tkwin);









    /*
     * Set up clipping region. Make sure the we are using the port
     * for this button, or we will set the wrong window's clip.
     */

    TkMacOSXSetUpClippingRgn(Tk_WindowId(tkwin));

    if (TkMacOSXComputeButtonDrawParams(butPtr, dpPtr)) {
	macButtonPtr->useTkText = 0;
    } else {
	macButtonPtr->useTkText = 1;
    }
    if (macButtonPtr->useTkText) {
	if (butPtr->type == TYPE_BUTTON) {
	    Tk_Fill3DRectangle(tkwin, pixmap, butPtr->highlightBorder, 0, 0,
		    Tk_Width(tkwin), Tk_Height(tkwin), 0, TK_RELIEF_FLAT);
	} else {
	    Tk_Fill3DRectangle(tkwin, pixmap, butPtr->normalBorder, 0, 0,
		    Tk_Width(tkwin), Tk_Height(tkwin), 0, TK_RELIEF_FLAT);
	}

        /*
	 * Display image or bitmap or text for labels or custom controls.
	 */

	DrawButtonImageAndText(butPtr);
        needhighlight = 1;
    } else {
        /*
	 * Draw the native portion of the buttons.
	 */

        TkMacOSXDrawButton(macButtonPtr, dpPtr->gc, pixmap);

        /*
	 * Ask for the highlight border, if needed.
	 */

        if (butPtr->highlightWidth < 3) {
            needhighlight = 1;
        }
    }

    /*
     * Draw highlight border, if needed.
     */

    if (needhighlight) {
	GC gc = NULL;
        if ((butPtr->flags & GOT_FOCUS) && butPtr->highlightColorPtr) {


	    gc = Tk_GCForColor(butPtr->highlightColorPtr, pixmap);
	} else if (butPtr->type == TYPE_LABEL) {
	    gc = Tk_GCForColor(Tk_3DBorderColor(butPtr->highlightBorder), pixmap);
	}
	if (gc) {
	    TkMacOSXDrawSolidBorder(tkwin, gc, 0, butPtr->highlightWidth);
	}
    }
}
 
/*
 *----------------------------------------------------------------------
 *
 * TkpComputeButtonGeometry --
 *
 *	After changes in a button's text or bitmap, this procedure recomputes
 *	the button's geometry and passes this information along to the geometry
 *	manager for the window.
 *
 * Results:
 *	None.
 *
 * Side effects:
 *	The button's window may change size.
 *
................................................................................

void
TkpComputeButtonGeometry(
    TkButton *butPtr)		/* Button whose geometry may have changed. */
{
    int width = 0, height = 0, charWidth = 1, haveImage = 0, haveText = 0;
    int txtWidth = 0, txtHeight = 0;
    MacButton *mbPtr = (MacButton *) butPtr;
    Tk_FontMetrics fm;
    char *text = Tcl_GetString(butPtr->textPtr);

    TkMacOSXComputeButtonParams(butPtr, &mbPtr->btnkind, &mbPtr->drawinfo);

    /*
     * If the indicator is on, get its size.
     */

    if (butPtr->indicatorOn) {
	switch (butPtr->type) {
	case TYPE_RADIO_BUTTON:
	    GetThemeMetric(kThemeMetricRadioButtonWidth,
		    (SInt32 *) &butPtr->indicatorDiameter);
	    break;
	case TYPE_CHECK_BUTTON:
	    GetThemeMetric(kThemeMetricCheckBoxWidth,
		    (SInt32 *) &butPtr->indicatorDiameter);
	    break;
	default:
	    break;
	}

	/*
	 * Allow 2px extra space next to the indicator.
	 */

	butPtr->indicatorSpace = butPtr->indicatorDiameter + 2;
    } else {
	butPtr->indicatorSpace = 0;
	butPtr->indicatorDiameter = 0;
    }

    if (butPtr->image != NULL) {
	Tk_SizeOfImage(butPtr->image, &width, &height);
	haveImage = 1;
    } else if (butPtr->bitmap != None) {
	Tk_SizeOfBitmap(butPtr->display, butPtr->bitmap, &width, &height);
................................................................................
	txtWidth = butPtr->textWidth + 2*butPtr->padX;
	txtHeight = butPtr->textHeight + 2*butPtr->padY;
	haveText = 1;
    }

    if (haveImage && haveText) { /* Image and Text */
	switch ((enum compound) butPtr->compound) {
	case COMPOUND_TOP:
	case COMPOUND_BOTTOM:

	    /*
	     * Image is above or below text.
	     */

	    height += txtHeight + butPtr->padY;
	    width = (width > txtWidth ? width : txtWidth);
	    break;
	case COMPOUND_LEFT:
	case COMPOUND_RIGHT:

	    /*
	     * Image is left or right of text.
	     */

	    width += txtWidth + 2*butPtr->padX;
	    height = (height > txtHeight ? height : txtHeight);
	    break;
	case COMPOUND_CENTER:

	    /*
	     * Image and text are superimposed.
	     */

	    width = (width > txtWidth ? width : txtWidth);
	    height = (height > txtHeight ? height : txtHeight);
	    break;
	default:
	    break;
	}
	width += butPtr->indicatorSpace;
    } else if (haveImage) { /* Image only */
	width = butPtr->width > 0 ? butPtr->width : width + butPtr->indicatorSpace;
	height = butPtr->height > 0 ? butPtr->height : height;
	if (butPtr->type == TYPE_BUTTON) {
	    /*
	     * Allow room to shift the image.
	     */
	    width += 2;
	    height += 2;
	}
    } else { /* Text only */
        width = txtWidth + butPtr->indicatorSpace;
	height = txtHeight;
	if (butPtr->width > 0) {
................................................................................
    }

    butPtr->inset = butPtr->borderWidth + butPtr->highlightWidth;

    width += butPtr->inset*2;
    height += butPtr->inset*2;
    if ([NSApp macMinorVersion] == 6) {
	width += 12;
    }
    if (mbPtr->btnkind == kThemePushButton) {
        HIRect tmpRect;
    	HIRect contBounds;

	/*
	 * A PushButton has a minimum size.  We make sure that we are not
	 * underestimating the size by requesting the content size of a
	 * Pushbutton whose overall size is our content size expanded by the
	 * standard padding.
	 */

	tmpRect = CGRectMake(0, 0, width + 2*HI_PADX, height + 2*HI_PADY);
        HIThemeGetButtonContentBounds(&tmpRect, &mbPtr->drawinfo, &contBounds);
        if (height < contBounds.size.height) {
	    height = contBounds.size.height;
        }
        if (width < contBounds.size.width) {
	    width = contBounds.size.width;
................................................................................
        }
	height += 2*HI_PADY;
	width += 2*HI_PADX;
    }
    Tk_GeometryRequest(butPtr->tkwin, width, height);
    Tk_SetInternalBorder(butPtr->tkwin, butPtr->inset);
}
 
/*
 *----------------------------------------------------------------------
 *
 * DrawButtonImageAndText --
 *
 *	Draws the image and text associated with a button or label.
 *
 * Results:
 *	None.
 *
 * Side effects:
 *	The image and text are drawn.
 *
 *----------------------------------------------------------------------
 */
static void
DrawButtonImageAndText(
    TkButton *butPtr)
{

    MacButton *mbPtr = (MacButton *) butPtr;
    Tk_Window tkwin = butPtr->tkwin;
    Pixmap pixmap;
    int haveImage = 0, haveText = 0, pressed = 0;

    int imageWidth = 0, imageHeight = 0;

    int imageXOffset = 0, imageYOffset = 0;

    int textXOffset = 0, textYOffset = 0;

    int width = 0, height = 0;

    int fullWidth = 0, fullHeight = 0;




    if (tkwin == NULL || !Tk_IsMapped(tkwin)) {
        return;
    }

    DrawParams *dpPtr = &mbPtr->drawParams;
    pixmap = (Pixmap) Tk_WindowId(tkwin);

    if (butPtr->image != None) {
        Tk_SizeOfImage(butPtr->image, &width, &height);
        haveImage = 1;
    } else if (butPtr->bitmap != None) {
        Tk_SizeOfBitmap(butPtr->display, butPtr->bitmap, &width, &height);
        haveImage = 1;
    }

    imageWidth = width;
    imageHeight = height;

    if (mbPtr->drawinfo.state == kThemeStatePressed) {
        /*
	 * Offset bitmaps by a bit when the button is pressed.
	 */

        pressed = 1;
    }

    haveText = (butPtr->textWidth != 0 && butPtr->textHeight != 0);
    if (haveImage && haveText) { /* Image and Text */
        int x, y;






        switch ((enum compound) butPtr->compound) {
	case COMPOUND_TOP:
	case COMPOUND_BOTTOM:
	    /* Image is above or below text */
	    if (butPtr->compound == COMPOUND_TOP) {
		textYOffset = height + butPtr->padY;
	    } else {
		imageYOffset = butPtr->textHeight + butPtr->padY;
	    }
	    fullHeight = height + butPtr->textHeight + butPtr->padY;
	    fullWidth = (width > butPtr->textWidth ? width : butPtr->textWidth);

	    textXOffset = (fullWidth - butPtr->textWidth)/2;
	    imageXOffset = (fullWidth - width)/2;
	    break;

	case COMPOUND_LEFT:
	case COMPOUND_RIGHT:
	    /*
	     * Image is left or right of text
	     */

	    if (butPtr->compound == COMPOUND_LEFT) {
		textXOffset = width + butPtr->padX;
	    } else {
		imageXOffset = butPtr->textWidth + butPtr->padX;
	    }
	    fullWidth = butPtr->textWidth + butPtr->padX + width;
	    fullHeight = (height > butPtr->textHeight ? height :
		    butPtr->textHeight);
	    textYOffset = (fullHeight - butPtr->textHeight)/2;
	    imageYOffset = (fullHeight - height)/2;
	    break;

	case COMPOUND_CENTER:
	    /*
	     * Image and text are superimposed
	     */

	    fullWidth = (width > butPtr->textWidth ? width :
		    butPtr->textWidth);
	    fullHeight = (height > butPtr->textHeight ? height :
		    butPtr->textHeight);
	    textXOffset = (fullWidth - butPtr->textWidth)/2;
	    imageXOffset = (fullWidth - width)/2;
	    textYOffset = (fullHeight - butPtr->textHeight)/2;
	    imageYOffset = (fullHeight - height)/2;
	    break;

	default:
	    break;
	}

        TkComputeAnchor(butPtr->anchor, tkwin,
                butPtr->padX + butPtr->borderWidth,
                butPtr->padY + butPtr->borderWidth,
                fullWidth + butPtr->indicatorSpace, fullHeight, &x, &y);
	x += butPtr->indicatorSpace;
................................................................................
            x += dpPtr->offset;
            y += dpPtr->offset;
        }
        imageXOffset += x;
        imageYOffset += y;

        if (butPtr->image != NULL) {
	    if ((butPtr->selectImage != NULL) &&
		    (butPtr->flags & SELECTED)) {
		Tk_RedrawImage(butPtr->selectImage, 0, 0,
			width, height, pixmap, imageXOffset, imageYOffset);
	    } else if ((butPtr->tristateImage != NULL) &&
		    (butPtr->flags & TRISTATED)) {
		Tk_RedrawImage(butPtr->tristateImage, 0, 0,
			width, height, pixmap, imageXOffset, imageYOffset);
	    } else {
		Tk_RedrawImage(butPtr->image, 0, 0, width,
			height, pixmap, imageXOffset, imageYOffset);
	    }
        } else {
	    XSetClipOrigin(butPtr->display, dpPtr->gc,
		    imageXOffset, imageYOffset);
	    XCopyPlane(butPtr->display, butPtr->bitmap, pixmap, dpPtr->gc,
		    0, 0, (unsigned int) width, (unsigned int) height,
		    imageXOffset, imageYOffset, 1);
	    XSetClipOrigin(butPtr->display, dpPtr->gc, 0, 0);
        }

	y += 1; /* Tweak to match native buttons. */
        Tk_DrawTextLayout(butPtr->display, pixmap,
                dpPtr->gc, butPtr->textLayout,
                x + textXOffset, y + textYOffset, 0, -1);
        Tk_UnderlineTextLayout(butPtr->display, pixmap, dpPtr->gc,
                butPtr->textLayout,
                x + textXOffset, y + textYOffset,
                butPtr->underline);
    } else if (haveImage) { /* Image only */
        int x = 0, y;


	TkComputeAnchor(butPtr->anchor, tkwin,
		butPtr->padX + butPtr->borderWidth,
		butPtr->padY + butPtr->borderWidth,
		width + butPtr->indicatorSpace, height, &x, &y);

        x += butPtr->indicatorSpace;
	if (pressed) {
	    x += dpPtr->offset;
	    y += dpPtr->offset;
	}
	imageXOffset += x;
	imageYOffset += y;

	if (butPtr->image != NULL) {

	    if ((butPtr->selectImage != NULL) &&
		    (butPtr->flags & SELECTED)) {
		Tk_RedrawImage(butPtr->selectImage, 0, 0, width,
			height, pixmap, imageXOffset, imageYOffset);
	    } else if ((butPtr->tristateImage != NULL) &&
		    (butPtr->flags & TRISTATED)) {
		Tk_RedrawImage(butPtr->tristateImage, 0, 0, width,
			height, pixmap, imageXOffset, imageYOffset);
	    } else {
		Tk_RedrawImage(butPtr->image, 0, 0, width, height,
			pixmap, imageXOffset, imageYOffset);
	    }
	} else {
	    XSetClipOrigin(butPtr->display, dpPtr->gc, x, y);
	    XCopyPlane(butPtr->display, butPtr->bitmap, pixmap, dpPtr->gc,

		    0, 0, (unsigned int) width, (unsigned int) height,

		    imageXOffset, imageYOffset, 1);
	    XSetClipOrigin(butPtr->display, dpPtr->gc, 0, 0);
	}
    } else { /* Text only */
        int x, y;

	TkComputeAnchor(butPtr->anchor, tkwin, butPtr->padX, butPtr->padY,
		butPtr->textWidth + butPtr->indicatorSpace,
		butPtr->textHeight, &x, &y);
	x += butPtr->indicatorSpace;
	y += 1; /* Tweak to match native buttons */
	Tk_DrawTextLayout(butPtr->display, pixmap, dpPtr->gc,
		butPtr->textLayout, x, y, 0, -1);
    }

    /*
     * If the button is disabled with a stipple rather than a special
     * foreground color, generate the stippled effect.  If the widget is
     * selected and we use a different background color when selected, must
     * temporarily modify the GC so the stippling is the right color.
     */

    if (mbPtr->useTkText) {
        if ((butPtr->state == STATE_DISABLED)
                && ((butPtr->disabledFg == NULL) || (butPtr->image != NULL))) {
            if ((butPtr->flags & SELECTED) && !butPtr->indicatorOn
                    && (butPtr->selectBorder != NULL)) {
................................................................................

        /*
         * Draw the border and traversal highlight last.  This way, if the
         * button's contents overflow they'll be covered up by the border.
         */

        if (dpPtr->relief != TK_RELIEF_FLAT) {
	    int inset = butPtr->highlightWidth;

	    Tk_Draw3DRectangle(tkwin, pixmap, dpPtr->border, inset, inset,
		    Tk_Width(tkwin) - 2*inset, Tk_Height(tkwin) - 2*inset,
		    butPtr->borderWidth, dpPtr->relief);
        }
    }
}
 




/*
 *----------------------------------------------------------------------
 *
 * TkpDestroyButton --
 *
 *	Free data structures associated with the button control.
 *
................................................................................
 */

void
TkpDestroyButton(
    TkButton *butPtr)
{
    MacButton *mbPtr = (MacButton *) butPtr; /* Mac button. */

    if (mbPtr->defaultPulseHandler) {
        Tcl_DeleteTimerHandler(mbPtr->defaultPulseHandler);
    }
}
 
/*
 *--------------------------------------------------------------
 *
 * TkMacOSXDrawButton --
 *
 *        This function draws the tk button using Mac controls. In addition,
 *        this code may apply custom colors passed in the TkButton.

 *
 * Results:
 *        None.
 *
 * Side effects:
 *      The control is created, or reinitialised as needed
 *
................................................................................
TkMacOSXDrawButton(
    MacButton *mbPtr,    /* Mac button. */
    GC gc,               /* The GC we are drawing into - needed for
                          * the bevel button */
    Pixmap pixmap)       /* The pixmap we are drawing into - needed
                          * for the bevel button */
{
    TkButton *butPtr = (TkButton *) mbPtr;
    TkWindow *winPtr = (TkWindow *) butPtr->tkwin;
    HIRect cntrRect;
    TkMacOSXDrawingContext dc;
    DrawParams *dpPtr = &mbPtr->drawParams;
    int useNewerHITools = 1;



    TkMacOSXComputeButtonParams(butPtr, &mbPtr->btnkind, &mbPtr->drawinfo);

    cntrRect = CGRectMake(winPtr->privatePtr->xOff, winPtr->privatePtr->yOff,


	    Tk_Width(butPtr->tkwin), Tk_Height(butPtr->tkwin));

    cntrRect = CGRectInset(cntrRect, butPtr->inset, butPtr->inset);

    if (useNewerHITools == 1) {
        HIRect contHIRec;
        static HIThemeButtonDrawInfo hiinfo;

        ButtonBackgroundDrawCB(&cntrRect, mbPtr, 32, true);

	if (!TkMacOSXSetupDrawingContext(pixmap, dpPtr->gc, 1, &dc)) {
	    return;
	}

        hiinfo.version = 0;
        hiinfo.state = mbPtr->drawinfo.state;
        hiinfo.kind = mbPtr->btnkind;
        hiinfo.value = mbPtr->drawinfo.value;
        hiinfo.adornment = mbPtr->drawinfo.adornment;
        hiinfo.animation.time.current = CFAbsoluteTimeGetCurrent();
        if (hiinfo.animation.time.start == 0) {
            hiinfo.animation.time.start = hiinfo.animation.time.current;
        }

	/*
	 * To avoid buttons with white text on a white background, we always
	 * set the state to inactive in Dark Mode.  It isn't perfect but it is
	 * usable.  Using a ttk::button would be a better choice, however.

	 */

	if (TkMacOSXInDarkMode(butPtr->tkwin)) {
	    hiinfo.state = kThemeStateInactive;
	}
	HIThemeDrawButton(&cntrRect, &hiinfo, dc.context,
		kHIThemeOrientationNormal, &contHIRec);

	TkMacOSXRestoreDrawingContext(&dc);
        ButtonContentDrawCB(&contHIRec, mbPtr->btnkind, &mbPtr->drawinfo,
		(MacButton *) mbPtr, 32, true);

    } else {
	if (!TkMacOSXSetupDrawingContext(pixmap, dpPtr->gc, 1, &dc)) {
	    return;
	}

	TkMacOSXRestoreDrawingContext(&dc);
    }
................................................................................
}
 
/*
 *--------------------------------------------------------------
 *
 * ButtonBackgroundDrawCB --
 *
 *        This function draws the background that lies under checkboxes and
 *        radiobuttons.
 *
 * Results:
 *        None.
 *
 * Side effects:
 *        The background gets updated to the current color.
 *
 *--------------------------------------------------------------
 */

static void
ButtonBackgroundDrawCB(
    const HIRect *btnbounds,
    MacButton *ptr,
    SInt16 depth,
    Boolean isColorDev)
{
    MacButton *mbPtr = (MacButton *) ptr;
    TkButton *butPtr = (TkButton *) mbPtr;
    Tk_Window tkwin = butPtr->tkwin;
    Pixmap pixmap;
    int usehlborder = 0;

    if (tkwin == NULL || !Tk_IsMapped(tkwin)) {
        return;
    }
    pixmap = (Pixmap) Tk_WindowId(tkwin);

    if (butPtr->type != TYPE_LABEL) {
        switch (mbPtr->btnkind) {
	case kThemeSmallBevelButton:
	case kThemeBevelButton:
	case kThemeRoundedBevelButton:
	case kThemePushButton:
	    usehlborder = 1;
	    break;
        }
    }
    if (usehlborder) {
        Tk_Fill3DRectangle(tkwin, pixmap, butPtr->highlightBorder, 0, 0,
            Tk_Width(tkwin), Tk_Height(tkwin), 0, TK_RELIEF_FLAT);
    } else {
        Tk_Fill3DRectangle(tkwin, pixmap, butPtr->normalBorder, 0, 0,
................................................................................
    const HIRect * btnbounds,
    ThemeButtonKind kind,
    const HIThemeButtonDrawInfo *drawinfo,
    MacButton *ptr,
    SInt16 depth,
    Boolean isColorDev)
{
    TkButton *butPtr = (TkButton *) ptr;
    Tk_Window tkwin = butPtr->tkwin;

    if (tkwin == NULL || !Tk_IsMapped(tkwin)) {
        return;
    }

    /*
     * Overlay Tk elements over button native region: drawing elements within
     * button boundaries/native region causes unpredictable metrics.
     */

    DrawButtonImageAndText( butPtr);
}
 
/*
 *--------------------------------------------------------------
 *
 * ButtonEventProc --
 *
 *	This procedure is invoked by the Tk dispatcher for various events on
 *	buttons.
 *
 * Results:
 *	None.
 *
 * Side effects:
 *	When it gets exposed, it is redisplayed.
 *
................................................................................
 */

static void
ButtonEventProc(
    ClientData clientData,	/* Information about window. */
    XEvent *eventPtr)		/* Information about event. */
{
    TkButton *buttonPtr = clientData;
    MacButton *mbPtr = clientData;

    if (eventPtr->type == ActivateNotify
	    || eventPtr->type == DeactivateNotify) {
	if ((buttonPtr->tkwin == NULL) || (!Tk_IsMapped(buttonPtr->tkwin))) {
	    return;
	}
	if (eventPtr->type == ActivateNotify) {
	    mbPtr->flags |= ACTIVE;
	} else {
	    mbPtr->flags &= ~ACTIVE;
	}
	if ((buttonPtr->flags & REDRAW_PENDING) == 0) {
	    Tcl_DoWhenIdle(TkpDisplayButton, buttonPtr);
	    buttonPtr->flags |= REDRAW_PENDING;
	}
    }
}
 
/*
 *----------------------------------------------------------------------
 *
 * TkMacOSXComputeButtonParams --
 *
 *      This procedure computes the various parameters used when creating a
 *      Carbon Appearance control.  These are determined by the various tk
 *      button parameters
 *
 * Results:
 *	None.
 *
 * Side effects:
 *        Sets the btnkind and drawinfo parameters
 *
 *----------------------------------------------------------------------
 */

static void
TkMacOSXComputeButtonParams(
    TkButton *butPtr,
    ThemeButtonKind *btnkind,
    HIThemeButtonDrawInfo *drawinfo)
{
    MacButton *mbPtr = (MacButton *) butPtr;

    if (butPtr->borderWidth <= 2) {
        *btnkind = kThemeSmallBevelButton;
    } else if (butPtr->borderWidth == 3) {
        *btnkind = kThemeBevelButton;
    } else if (butPtr->borderWidth == 4) {
        *btnkind = kThemeRoundedBevelButton;
    } else {
        *btnkind = kThemePushButton;
    }

    if ((butPtr->image == None) && (butPtr->bitmap == None)) {
        switch (butPtr->type) {
	case TYPE_BUTTON:
	    *btnkind = kThemePushButton;
	    break;
	case TYPE_RADIO_BUTTON:
	    if (butPtr->borderWidth <= 1) {
		*btnkind = kThemeSmallRadioButton;
	    } else {
		*btnkind = kThemeRadioButton;
	    }
	    break;
	case TYPE_CHECK_BUTTON:
	    if (butPtr->borderWidth <= 1) {
		*btnkind = kThemeSmallCheckBox;
	    } else {
		*btnkind = kThemeCheckBox;
	    }
	    break;
	}
    }

    if (butPtr->indicatorOn) {
        switch (butPtr->type) {
	case TYPE_RADIO_BUTTON:
	    if (butPtr->borderWidth <= 1) {
		*btnkind = kThemeSmallRadioButton;
	    } else {
		*btnkind = kThemeRadioButton;
	    }
	    break;
	case TYPE_CHECK_BUTTON:
	    if (butPtr->borderWidth <= 1) {
		*btnkind = kThemeSmallCheckBox;
	    } else {
		*btnkind = kThemeCheckBox;
	    }
	    break;
        }
    } else {
        if (butPtr->type == TYPE_RADIO_BUTTON ||
		butPtr->type == TYPE_CHECK_BUTTON) {

	    if (*btnkind == kThemePushButton) {
		*btnkind = kThemeBevelButton;
	    }
        }
    }

    if (butPtr->flags & SELECTED) {
................................................................................
    }

    drawinfo->adornment = kThemeAdornmentNone;
    if (butPtr->defaultState == DEFAULT_ACTIVE) {
        drawinfo->adornment |= kThemeAdornmentDefault;
        if (!mbPtr->defaultPulseHandler) {
            mbPtr->defaultPulseHandler = Tcl_CreateTimerHandler(
                    PULSE_TIMER_MSECS, PulseDefaultButtonProc, butPtr);

        }
    } else if (mbPtr->defaultPulseHandler) {
        Tcl_DeleteTimerHandler(mbPtr->defaultPulseHandler);
    }
    if (butPtr->highlightWidth >= 3) {
        if ((butPtr->flags & GOT_FOCUS)) {
            drawinfo->adornment |= kThemeAdornmentFocus;
................................................................................
}
 
/*
 *----------------------------------------------------------------------
 *
 * TkMacOSXComputeButtonDrawParams --
 *
 *	This procedure computes the various parameters used when drawing a

 *	button. These are determined by the various tk button parameters
 *
 * Results:
 *	1 if control will be used, 0 otherwise.
 *
 * Side effects:
 *	Sets the button draw parameters
 *
................................................................................
 */

static int
TkMacOSXComputeButtonDrawParams(
    TkButton *butPtr,
    DrawParams *dpPtr)
{
    MacButton *mbPtr = (MacButton *) butPtr;

    dpPtr->hasImageOrBitmap = ((butPtr->image != NULL)
	    || (butPtr->bitmap != None));

    if (butPtr->type != TYPE_LABEL) {
        dpPtr->offset = 0;
        if (dpPtr->hasImageOrBitmap) {
            switch (mbPtr->btnkind) {
	    case kThemeSmallBevelButton:
	    case kThemeBevelButton:
	    case kThemeRoundedBevelButton:
	    case kThemePushButton:
		dpPtr->offset = 1;
		break;
            }
        }
    }

    dpPtr->border = butPtr->normalBorder;
    if ((butPtr->state == STATE_DISABLED) && (butPtr->disabledFg != NULL)) {
	dpPtr->gc = butPtr->disabledGC;
................................................................................

    if ((butPtr->flags & SELECTED) && (butPtr->state != STATE_ACTIVE)
	    && (butPtr->selectBorder != NULL) && !butPtr->indicatorOn) {
	dpPtr->border = butPtr->selectBorder;
    }

    /*
     * Override the relief specified for the button if this is a checkbutton or
     * radiobutton and there's no indicator.
     */

    dpPtr->relief = butPtr->relief;

    if ((butPtr->type >= TYPE_CHECK_BUTTON) && !butPtr->indicatorOn) {
	if (!dpPtr->hasImageOrBitmap) {
	    dpPtr->relief = (butPtr->flags & SELECTED) ? TK_RELIEF_SUNKEN
		    : TK_RELIEF_RAISED;
	}
    }

    if (butPtr->type != TYPE_LABEL && (butPtr->type == TYPE_BUTTON ||


	    butPtr->indicatorOn || dpPtr->hasImageOrBitmap)) {

	/*
	 * Draw this widget as a native control.
	 */

	return 1;
    } else {

	/*
	 * Draw this widget from scratch.
	 */

	return 0;
    }
}
 
/*
 *--------------------------------------------------------------
 *
................................................................................
 *     None.
 *
 * Side effects:
 *     Sets a timer to run itself again.
 *
 *--------------------------------------------------------------
 */

static void
PulseDefaultButtonProc(ClientData clientData)
{
    MacButton *mbPtr = clientData;

    TkpDisplayButton(clientData);
    mbPtr->defaultPulseHandler = Tcl_CreateTimerHandler(
            PULSE_TIMER_MSECS, PulseDefaultButtonProc, clientData);
}
 
/*
 * Local Variables:
 * mode: objc
 * c-basic-offset: 4
 * fill-column: 79
 * coding: utf-8
 * End:
 */

Changes to macosx/tkMacOSXClipboard.c.

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				 * returned. */
    Tk_GetSelProc *proc,	/* Procedure to call to process the selection,
				 * once it has been retrieved. */
    ClientData clientData)	/* Arbitrary value to pass to proc. */
{
    int result = TCL_ERROR;
    TkDisplay *dispPtr = ((TkWindow *) tkwin)->dispPtr;



    int haveExternalClip = ([[NSPasteboard generalPasteboard] changeCount] != changeCount);
    if (dispPtr && (haveExternalClip || dispPtr->clipboardActive)
	        && selection == dispPtr->clipboardAtom
	        && (target == XA_STRING || target == dispPtr->utf8Atom)) {
	NSString *string = nil;
	NSPasteboard *pb = [NSPasteboard generalPasteboard];
	NSString *type = [pb availableTypeFromArray:[NSArray arrayWithObject:
		NSStringPboardType]];
................................................................................
{
    TkDisplay *dispPtr = TkGetDisplayList();

    if (dispPtr && selection == dispPtr->clipboardAtom) {
	clipboardOwner = owner ? Tk_IdToWindow(display, owner) : NULL;
	if (!dispPtr->clipboardActive) {
	    NSPasteboard *pb = [NSPasteboard generalPasteboard];

	    changeCount = [pb declareTypes:[NSArray array] owner:NSApp];
	}
    }
    return Success;
}
 
/*
 *----------------------------------------------------------------------
 *
 * TkMacOSXSelDeadWindow --
 *
 *	This function is invoked just before a TkWindow is deleted. It
 *	performs selection-related cleanup.
 *
 * Results:
 *	None.
 *
 * Side effects:
 *	clipboardOwner is cleared.
 *






>
>

<







 







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				 * returned. */
    Tk_GetSelProc *proc,	/* Procedure to call to process the selection,
				 * once it has been retrieved. */
    ClientData clientData)	/* Arbitrary value to pass to proc. */
{
    int result = TCL_ERROR;
    TkDisplay *dispPtr = ((TkWindow *) tkwin)->dispPtr;
    int haveExternalClip =
	    ([[NSPasteboard generalPasteboard] changeCount] != changeCount);


    if (dispPtr && (haveExternalClip || dispPtr->clipboardActive)
	        && selection == dispPtr->clipboardAtom
	        && (target == XA_STRING || target == dispPtr->utf8Atom)) {
	NSString *string = nil;
	NSPasteboard *pb = [NSPasteboard generalPasteboard];
	NSString *type = [pb availableTypeFromArray:[NSArray arrayWithObject:
		NSStringPboardType]];
................................................................................
{
    TkDisplay *dispPtr = TkGetDisplayList();

    if (dispPtr && selection == dispPtr->clipboardAtom) {
	clipboardOwner = owner ? Tk_IdToWindow(display, owner) : NULL;
	if (!dispPtr->clipboardActive) {
	    NSPasteboard *pb = [NSPasteboard generalPasteboard];

	    changeCount = [pb declareTypes:[NSArray array] owner:NSApp];
	}
    }
    return Success;
}
 
/*
 *----------------------------------------------------------------------
 *
 * TkMacOSXSelDeadWindow --
 *
 *	This function is invoked just before a TkWindow is deleted. It performs
 *	selection-related cleanup.
 *
 * Results:
 *	None.
 *
 * Side effects:
 *	clipboardOwner is cleared.
 *

Changes to macosx/tkMacOSXColor.c.

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    { "WhiteText",			    HIText,       kThemeTextColorWhite },			    /* 159 */
    { "TabPaneBackground",		    HIBackground, kThemeBackgroundTabPane },			    /* 160 */
    { "PlacardBackground",		    HIBackground, kThemeBackgroundPlacard },			    /* 161 */
    { "WindowHeaderBackground",		    HIBackground, kThemeBackgroundWindowHeader },		    /* 162 */
    { "ListViewWindowHeaderBackground",	    HIBackground, kThemeBackgroundListViewWindowHeader },	    /* 163 */
    { "SecondaryGroupBoxBackground",	    HIBackground, kThemeBackgroundSecondaryGroupBox },		    /* 164 */
    { "MetalBackground",		    HIBackground, kThemeBackgroundMetal },			    /* 165 */





    { "TtkBackground",			    ttkBackground, 0 },	    					    /* 166 */
    { "TtkBackground1",			    ttkBackground, 1 },						    /* 167 */
    { "TtkBackground2",			    ttkBackground, 2 },						    /* 168 */
    { "TtkBackground3",			    ttkBackground, 3 },						    /* 169 */
    { "TtkBackground4",			    ttkBackground, 4 },						    /* 170 */
    { "TtkBackground5",			    ttkBackground, 5 },						    /* 171 */
    { "TtkBackground6",			    ttkBackground, 6 },						    /* 172 */
    { "TtkBackground7",			    ttkBackground, 7 },						    /* 173 */
    { "TextColor",			    semantic, 0 },						    /* 174 */
    { "SelectedTextColor",		    semantic, 1 },						    /* 175 */
    { "LabelColor",			    semantic, 2 },						    /* 176 */
    { "ControlTextColor",      		    semantic, 3 },						    /* 177 */
    { "DisabledControlTextColor",	    semantic, 4 },						    /* 178 */
    { "TextBackgroundColor",		    semantic, 5 },						    /* 179 */

    { "SelectedTextBackgroundColor",	    semantic, 6 },						    /* 180 */

    { NULL,				    0, 0 }
};
#define FIRST_SEMANTIC_COLOR 166
#define MAX_PIXELCODE 180
 
/*
 *----------------------------------------------------------------------
 *
 * GetEntryFromPixelCode --
 *
 *	Extract a SystemColorMapEntry from the table.
................................................................................
 * Side effects:
 *	None.
 *
 *----------------------------------------------------------------------
 */

static NSColorSpace* deviceRGB = NULL;




static OSStatus
SetCGColorComponents(
    struct SystemColorMapEntry entry,
    unsigned long pixel,
    CGColorRef *c)
{
    OSStatus err = noErr;
    NSColor *bgColor, *color;
    CGFloat rgba[4] = {0, 0, 0, 1};






    if (!deviceRGB) {
	deviceRGB = [NSColorSpace deviceRGBColorSpace];
    }

    /*
     *  This function is called before our autorelease pool is set up,
     *  so it needs its own pool.
     */

    NSAutoreleasePool *pool = [NSAutoreleasePool new];

    switch (entry.type) {
    case HIBrush:
	err = ChkErr(HIThemeBrushCreateCGColor, entry.value, c);
................................................................................
	return err;
    case rgbColor:
	rgba[0] = ((pixel >> 16) & 0xff) / 255.0;
	rgba[1] = ((pixel >>  8) & 0xff) / 255.0;
	rgba[2] = ((pixel      ) & 0xff) / 255.0;
	break;
    case ttkBackground:











	bgColor = [[NSColor windowBackgroundColor] colorUsingColorSpace:
			   deviceRGB];
	[bgColor getComponents: rgba];


	for (int i=0; i<3; i++) {




	    rgba[i] -= entry.value*(8.0/255.0);

	}
	break;
    case semantic:
	switch (entry.value) {
	case 0:
	    color = [[NSColor textColor] colorUsingColorSpace:
			  deviceRGB];
	    break;
	case 1:
	    color = [[NSColor selectedTextColor] colorUsingColorSpace:
			  deviceRGB];
	    break;
	case 2:
#if MAC_OS_X_VERSION_MIN_REQUIRED > 101000
	    color = [[NSColor labelColor] colorUsingColorSpace:
			  deviceRGB];
#else
	    color = [[NSColor textColor] colorUsingColorSpace:
			  deviceRGB];
#endif
	    break;
	case 3:
	    color = [[NSColor controlTextColor] colorUsingColorSpace:
			  deviceRGB];
	    break;
	case 4:
	    color = [[NSColor disabledControlTextColor] colorUsingColorSpace:
			  deviceRGB];
	    break;
	case 5:









	    color = [[NSColor textBackgroundColor] colorUsingColorSpace:
			  deviceRGB];
	    break;
	case 6:
	    color = [[NSColor selectedTextBackgroundColor] colorUsingColorSpace:
			  deviceRGB];
	    break;
	default:
	    if ([NSApp macMinorVersion] < 10) {

	    color = [[NSColor textColor] colorUsingColorSpace:
			  deviceRGB];
	    } else {



















#if MAC_OS_X_VERSION_MIN_REQUIRED >= 101000

		color = [[NSColor labelColor] colorUsingColorSpace:
			      deviceRGB];
#endif
		break;
	    }



	}
	[color getComponents: rgba];
	break;
    case clearColor:
	rgba[3]	= 0.0;
	break;

................................................................................
     */

    case HIText:
    case HIBackground:
    default:
	break;
    }
    *c = CGColorCreate(deviceRGB.CGColorSpace, rgba );
    [pool drain];
    return err;
}
 
/*
 *----------------------------------------------------------------------
 *
................................................................................
 * Side effects:
 *      None.
 *
 *----------------------------------------------------------------------
 */

MODULE_SCOPE Bool
TkMacOSXInDarkMode(Tk_Window tkwin) {



#if MAC_OS_X_VERSION_MIN_REQUIRED < 101300
    return false;
#else

    static NSAppearanceName darkAqua = @"NSAppearanceNameDarkAqua";
    TkWindow *winPtr = (TkWindow*)tkwin;
    NSView *view = TkMacOSXDrawableView(winPtr->privatePtr);

    if (view && [view.effectiveAppearance.name isEqualToString:darkAqua]) {
	return True;
    } else {
	return false;
    }
#endif

}

 
/*
 *----------------------------------------------------------------------
 *
 * TkSetMacColor --
 *
 *	Sets the components of a CGColorRef from an XColor pixel value.
................................................................................
TkSetMacColor(
    unsigned long pixel,		/* Pixel value to convert. */
    void *macColor)			/* CGColorRef to modify. */
{
    CGColorRef *color = (CGColorRef*)macColor;
    OSStatus err = -1;
    struct SystemColorMapEntry entry;

    if (GetEntryFromPixelCode((pixel >> 24) & 0xff, &entry)) {
	err = ChkErr(SetCGColorComponents, entry, pixel, color);
    }
    return (err == noErr);
}
 
/*
................................................................................
{
    CGColorRef cgColor = TkMacOSXCreateCGColor(gc, pixel);
    NSColor *nsColor = nil;

    if (cgColor) {
	NSColorSpace *colorSpace = [[NSColorSpace alloc]
		initWithCGColorSpace:CGColorGetColorSpace(cgColor)];

	nsColor = [NSColor colorWithColorSpace:colorSpace
		components:CGColorGetComponents(cgColor)
		count:CGColorGetNumberOfComponents(cgColor)];
	[colorSpace release];
	CFRelease(cgColor);
    }
    return nsColor;
................................................................................
    CGContextRef context)
{
    OSStatus err = noErr;
    CGColorRef cgColor = nil;
    struct SystemColorMapEntry entry;
    CGRect rect;
    int code = (pixel >> 24) & 0xff;
    HIThemeBackgroundDrawInfo info = { 0, kThemeStateActive, entry.value };
    static CGColorSpaceRef deviceRGBSpace = NULL;

    if (!deviceRGBSpace) {
	deviceRGBSpace = CGColorSpaceCreateDeviceRGB();
    }
    if (code < FIRST_SEMANTIC_COLOR) {
	cgColor = CopyCachedColor(gc, pixel);
    }
    if (!cgColor && GetEntryFromPixelCode(code, &entry)) {
................................................................................
	    }
	    break;
	case HIText:
	    err = ChkErr(HIThemeSetTextFill, entry.value, NULL, context,
		    kHIThemeOrientationNormal);
	    break;
	case HIBackground:

	    rect = CGContextGetClipBoundingBox(context);
	    err = ChkErr(HIThemeApplyBackground, &rect, &info,
		    context, kHIThemeOrientationNormal);
	    break;
	default:
	    err = ChkErr(SetCGColorComponents, entry, pixel, &cgColor);
	    if (err == noErr) {
................................................................................
     * Check to see if this is a system color. Otherwise, XParseColor
     * will do all the work.
     */

    if (strncasecmp(name, "system", 6) == 0) {
	Tcl_Obj *strPtr = Tcl_NewStringObj(name+6, -1);
	int idx, result;

	result = Tcl_GetIndexFromObjStruct(NULL, strPtr, systemColorMap,
		    sizeof(struct SystemColorMapEntry), NULL, TCL_EXACT, &idx);
	Tcl_DecrRefCount(strPtr);
	if (result == TCL_OK) {
	    OSStatus err;
	    CGColorRef c;
	    unsigned char pixelCode = idx + MIN_PIXELCODE;
	    struct SystemColorMapEntry entry = systemColorMap[idx];

	    err = ChkErr(SetCGColorComponents, entry, 0, &c);
	    if (err == noErr) {
		const size_t n = CGColorGetNumberOfComponents(c);
		const CGFloat *rgba = CGColorGetComponents(c);

		switch (n) {
		case 4:
................................................................................
		    color.green = rgba[1] * 65535.0;
		    color.blue  = rgba[2] * 65535.0;
		    break;
		case 2:
		    color.red = color.green = color.blue = rgba[0] * 65535.0;
		    break;
		default:
		  Tcl_Panic("CGColor with %d components", (int) n);
		}
		color.pixel = ((((((pixelCode << 8)
		    | ((color.red   >> 8) & 0xff)) << 8)
		    | ((color.green >> 8) & 0xff)) << 8)
		    | ((color.blue  >> 8) & 0xff));
		CGColorRelease(c);
		goto validXColor;
	    }
	    CGColorRelease(c);
	}
    }







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    { "WhiteText",			    HIText,       kThemeTextColorWhite },			    /* 159 */
    { "TabPaneBackground",		    HIBackground, kThemeBackgroundTabPane },			    /* 160 */
    { "PlacardBackground",		    HIBackground, kThemeBackgroundPlacard },			    /* 161 */
    { "WindowHeaderBackground",		    HIBackground, kThemeBackgroundWindowHeader },		    /* 162 */
    { "ListViewWindowHeaderBackground",	    HIBackground, kThemeBackgroundListViewWindowHeader },	    /* 163 */
    { "SecondaryGroupBoxBackground",	    HIBackground, kThemeBackgroundSecondaryGroupBox },		    /* 164 */
    { "MetalBackground",		    HIBackground, kThemeBackgroundMetal },			    /* 165 */

    /*
     * Colors based on "semantic" NSColors.
     */

    { "WindowBackgroundColor",		    ttkBackground, 0 },	    					    /* 166 */
    { "WindowBackgroundColor1",		    ttkBackground, 1 },						    /* 167 */
    { "WindowBackgroundColor2",		    ttkBackground, 2 },						    /* 168 */
    { "WindowBackgroundColor3",		    ttkBackground, 3 },						    /* 169 */
    { "WindowBackgroundColor4",		    ttkBackground, 4 },						    /* 170 */
    { "WindowBackgroundColor5",		    ttkBackground, 5 },						    /* 171 */
    { "WindowBackgroundColor6",		    ttkBackground, 6 },						    /* 172 */
    { "WindowBackgroundColor7",		    ttkBackground, 7 },						    /* 173 */
    { "TextColor",			    semantic, 0 },						    /* 174 */
    { "SelectedTextColor",		    semantic, 1 },						    /* 175 */
    { "LabelColor",			    semantic, 2 },						    /* 176 */
    { "ControlTextColor",      		    semantic, 3 },						    /* 177 */
    { "DisabledControlTextColor",	    semantic, 4 },						    /* 178 */
    { "SelectedTabTextColor",		    semantic, 5 },						    /* 179 */
    { "TextBackgroundColor",		    semantic, 6 },						    /* 180 */
    { "SelectedTextBackgroundColor",	    semantic, 7 },						    /* 181 */
    { "ControlAccentColor",		    semantic, 8 },						    /* 182 */
    { NULL,				    0, 0 }
};
#define FIRST_SEMANTIC_COLOR 166
#define MAX_PIXELCODE 182
 
/*
 *----------------------------------------------------------------------
 *
 * GetEntryFromPixelCode --
 *
 *	Extract a SystemColorMapEntry from the table.
................................................................................
 * Side effects:
 *	None.
 *
 *----------------------------------------------------------------------
 */

static NSColorSpace* deviceRGB = NULL;
static CGFloat blueAccentRGBA[4] = {0, 122.0 / 255, 1.0, 1.0};
static CGFloat windowBackground[4] =
    {236.0 / 255, 236.0 / 255, 236.0 / 255, 1.0};

static OSStatus
SetCGColorComponents(
    struct SystemColorMapEntry entry,
    unsigned long pixel,
    CGColorRef *c)
{
    OSStatus err = noErr;
    NSColor *bgColor, *color;
    CGFloat rgba[4] = {0, 0, 0, 1};
#if MAC_OS_X_VERSION_MAX_ALLOWED < 101400
    NSInteger colorVariant;
    static CGFloat graphiteAccentRGBA[4] =
	{152.0 / 255, 152.0 / 255, 152.0 / 255, 1.0};
#endif

    if (!deviceRGB) {
	deviceRGB = [NSColorSpace deviceRGBColorSpace];
    }

    /*
     * This function is called before our autorelease pool is set up,
     * so it needs its own pool.
     */

    NSAutoreleasePool *pool = [NSAutoreleasePool new];

    switch (entry.type) {
    case HIBrush:
	err = ChkErr(HIThemeBrushCreateCGColor, entry.value, c);
................................................................................
	return err;
    case rgbColor:
	rgba[0] = ((pixel >> 16) & 0xff) / 255.0;
	rgba[1] = ((pixel >>  8) & 0xff) / 255.0;
	rgba[2] = ((pixel      ) & 0xff) / 255.0;
	break;
    case ttkBackground:

	/*
	 * Prior to OSX 10.14, getComponents returns black when applied to
	 * windowBackGroundColor.
	 */

	if ([NSApp macMinorVersion] < 14) {
	    for (int i=0; i<3; i++) {
		rgba[i] = windowBackground[i];
	    }
	} else {
	    bgColor = [[NSColor windowBackgroundColor] colorUsingColorSpace:
			    deviceRGB];
	    [bgColor getComponents: rgba];
	}
	if (rgba[0] + rgba[1] + rgba[2] < 1.5) {
	    for (int i=0; i<3; i++) {
		rgba[i] += entry.value*8.0 / 255.0;
	    }
	} else {
	    for (int i=0; i<3; i++) {
		rgba[i] -= entry.value*8.0 / 255.0;
	    }
	}
	break;
    case semantic:
	switch (entry.value) {
	case 0:
	    color = [[NSColor textColor] colorUsingColorSpace: deviceRGB];

	    break;
	case 1:
	    color = [[NSColor selectedTextColor] colorUsingColorSpace: deviceRGB];

	    break;
	case 2:
#if MAC_OS_X_VERSION_MAX_ALLOWED >= 101000
	    color = [[NSColor labelColor] colorUsingColorSpace: deviceRGB];

#else
	    color = [[NSColor textColor] colorUsingColorSpace: deviceRGB];

#endif
	    break;
	case 3:
	    color = [[NSColor controlTextColor] colorUsingColorSpace:
			  deviceRGB];
	    break;
	case 4:
	    color = [[NSColor disabledControlTextColor] colorUsingColorSpace:
			  deviceRGB];
	    break;
	case 5:
	    if ([NSApp macMinorVersion] > 6) {
		color = [[NSColor whiteColor] colorUsingColorSpace:
						  deviceRGB];
	    } else {
		color = [[NSColor blackColor] colorUsingColorSpace:
						  deviceRGB];
	    }
	    break;
	case 6:
	    color = [[NSColor textBackgroundColor] colorUsingColorSpace:
			  deviceRGB];
	    break;
	case 7:
	    color = [[NSColor selectedTextBackgroundColor] colorUsingColorSpace:
			  deviceRGB];
	    break;
	case 8:
#if MAC_OS_X_VERSION_MAX_ALLOWED >= 101400
	    if (@available(macOS 10.14, *)) {
		color = [[NSColor controlAccentColor] colorUsingColorSpace:
							  deviceRGB];
	    } else {
		color = [NSColor colorWithColorSpace: deviceRGB
				 components: blueAccentRGBA
				 count: 4];
	    }
#else
	    colorVariant = [[NSUserDefaults standardUserDefaults]
			       integerForKey:@"AppleAquaColorVariant"];
	    if (colorVariant == 6) {
		color = [NSColor colorWithColorSpace: deviceRGB
				 components: graphiteAccentRGBA
				 count: 4];
	    } else {
		color = [NSColor colorWithColorSpace: deviceRGB
				 components: blueAccentRGBA
				 count: 4];
	    }
#endif
	    break;
	default:
#if MAC_OS_X_VERSION_MAX_ALLOWED >= 101000
	    if ([NSApp macMinorVersion] >= 10) {
		color = [[NSColor labelColor] colorUsingColorSpace:
			      deviceRGB];

		break;
	    }
#endif
	    color = [[NSColor textColor] colorUsingColorSpace: deviceRGB];
	    break;
	}
	[color getComponents: rgba];
	break;
    case clearColor:
	rgba[3]	= 0.0;
	break;

................................................................................
     */

    case HIText:
    case HIBackground:
    default:
	break;
    }
    *c = CGColorCreate(deviceRGB.CGColorSpace, rgba);
    [pool drain];
    return err;
}
 
/*
 *----------------------------------------------------------------------
 *
................................................................................
 * Side effects:
 *      None.
 *
 *----------------------------------------------------------------------
 */

MODULE_SCOPE Bool
TkMacOSXInDarkMode(Tk_Window tkwin)
{
    int result = false;

#if MAC_OS_X_VERSION_MAX_ALLOWED >= 101400


    if ([NSApp macMinorVersion] >= 14) {
        static NSAppearanceName darkAqua = @"NSAppearanceNameDarkAqua";
        TkWindow *winPtr = (TkWindow*) tkwin;
        NSView *view = TkMacOSXDrawableView(winPtr->privatePtr);
        result = (view &&
                  [view.effectiveAppearance.name isEqualToString:darkAqua]);



    }
#endif
    return result;
}

 
/*
 *----------------------------------------------------------------------
 *
 * TkSetMacColor --
 *
 *	Sets the components of a CGColorRef from an XColor pixel value.
................................................................................
TkSetMacColor(
    unsigned long pixel,		/* Pixel value to convert. */
    void *macColor)			/* CGColorRef to modify. */
{
    CGColorRef *color = (CGColorRef*)macColor;
    OSStatus err = -1;
    struct SystemColorMapEntry entry;

    if (GetEntryFromPixelCode((pixel >> 24) & 0xff, &entry)) {
	err = ChkErr(SetCGColorComponents, entry, pixel, color);
    }
    return (err == noErr);
}
 
/*
................................................................................
{
    CGColorRef cgColor = TkMacOSXCreateCGColor(gc, pixel);
    NSColor *nsColor = nil;

    if (cgColor) {
	NSColorSpace *colorSpace = [[NSColorSpace alloc]
		initWithCGColorSpace:CGColorGetColorSpace(cgColor)];

	nsColor = [NSColor colorWithColorSpace:colorSpace
		components:CGColorGetComponents(cgColor)
		count:CGColorGetNumberOfComponents(cgColor)];
	[colorSpace release];
	CFRelease(cgColor);
    }
    return nsColor;
................................................................................
    CGContextRef context)
{
    OSStatus err = noErr;
    CGColorRef cgColor = nil;
    struct SystemColorMapEntry entry;
    CGRect rect;
    int code = (pixel >> 24) & 0xff;
    HIThemeBackgroundDrawInfo info = {0, kThemeStateActive, 0};;
    static CGColorSpaceRef deviceRGBSpace = NULL;

    if (!deviceRGBSpace) {
	deviceRGBSpace = CGColorSpaceCreateDeviceRGB();
    }
    if (code < FIRST_SEMANTIC_COLOR) {
	cgColor = CopyCachedColor(gc, pixel);
    }
    if (!cgColor && GetEntryFromPixelCode(code, &entry)) {
................................................................................
	    }
	    break;
	case HIText:
	    err = ChkErr(HIThemeSetTextFill, entry.value, NULL, context,
		    kHIThemeOrientationNormal);
	    break;
	case HIBackground:
	    info.kind = entry.value;
	    rect = CGContextGetClipBoundingBox(context);
	    err = ChkErr(HIThemeApplyBackground, &rect, &info,
		    context, kHIThemeOrientationNormal);
	    break;
	default:
	    err = ChkErr(SetCGColorComponents, entry, pixel, &cgColor);
	    if (err == noErr) {
................................................................................
     * Check to see if this is a system color. Otherwise, XParseColor
     * will do all the work.
     */

    if (strncasecmp(name, "system", 6) == 0) {
	Tcl_Obj *strPtr = Tcl_NewStringObj(name+6, -1);
	int idx, result;

	result = Tcl_GetIndexFromObjStruct(NULL, strPtr, systemColorMap,
		sizeof(struct SystemColorMapEntry), NULL, TCL_EXACT, &idx);
	Tcl_DecrRefCount(strPtr);
	if (result == TCL_OK) {
	    OSStatus err;
	    CGColorRef c;
	    unsigned char pixelCode = idx + MIN_PIXELCODE;
	    struct SystemColorMapEntry entry = systemColorMap[idx];

	    err = ChkErr(SetCGColorComponents, entry, 0, &c);
	    if (err == noErr) {
		const size_t n = CGColorGetNumberOfComponents(c);
		const CGFloat *rgba = CGColorGetComponents(c);

		switch (n) {
		case 4:
................................................................................
		    color.green = rgba[1] * 65535.0;
		    color.blue  = rgba[2] * 65535.0;
		    break;
		case 2:
		    color.red = color.green = color.blue = rgba[0] * 65535.0;
		    break;
		default:
		    Tcl_Panic("CGColor with %d components", (int) n);
		}
		color.pixel = ((((((pixelCode << 8)
			| ((color.red   >> 8) & 0xff)) << 8)
			| ((color.green >> 8) & 0xff)) << 8)
			| ((color.blue  >> 8) & 0xff));
		CGColorRelease(c);
		goto validXColor;
	    }
	    CGColorRelease(c);
	}
    }

Changes to macosx/tkMacOSXCursor.c.

181
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    {NULL}
};

/*
 * Declarations of static variables used in this file.
 */

static TkMacOSXCursor * gCurrentCursor = NULL;
				/* A pointer to the current cursor. */
static int gResizeOverride = false;
				/* A boolean indicating whether we should use
				 * the resize cursor during installations. */
static int gTkOwnsCursor = true;/* A boolean indicating whether Tk owns the
				 * cursor. If not (for instance, in the case
				 * where a Tk window is embedded in another
				 * app's window, and the cursor is out of the
				 * tk window, we will not attempt to adjust
				 * the cursor. */

/*
 * Declarations of procedures local to this file
 */

static void FindCursorByName(TkMacOSXCursor *macCursorPtr, const char *string);
................................................................................
		NSBitmapImageRep *bitmapImageRep = NULL;
		CGImageRef img = NULL, mask = NULL, maskedImg = NULL;
		static const CGFloat decodeWB[] = {1, 0};
		CGColorSpaceRef colorspace = CGColorSpaceCreateWithName(
			kCGColorSpaceGenericGray);
		CGDataProviderRef provider = CGDataProviderCreateWithData(NULL,
			bitmap, pix*pix/8, NULL);

		if (provider) {
		    img = CGImageCreate(pix, pix, 1, 1, pix/8, colorspace,
			    kCGBitmapByteOrderDefault, provider, decodeWB, 0,
			    kCGRenderingIntentDefault);
		    CFRelease(provider);
		}
		provider = CGDataProviderCreateWithData(NULL, bitmap +
................................................................................
		    maskedImg = CGImageCreateWithMask(img, mask);
		}
		if (maskedImg) {
		    bitmapImageRep = [[NSBitmapImageRep alloc]
			    initWithCGImage:maskedImg];
		    CFRelease(maskedImg);
		}

		if (mask) { CFRelease(mask); }


		if (img)  { CFRelease(img); }


		if (colorspace) { CFRelease(colorspace); }

		if (bitmapImageRep) {
		    image = [[NSImage alloc] initWithSize:NSMakeSize(pix, pix)];
		    [image addRepresentation:bitmapImageRep];
		    [bitmapImageRep release];
		}

		uint16_t *hotSpotData = (uint16_t*)(bitmap + 2*pix*pix/8);
		hotSpot.y = CFSwapInt16BigToHost(*hotSpotData++);
		hotSpot.x = CFSwapInt16BigToHost(*hotSpotData);
		haveHotSpot = 1;
		break;
	    }
	    }






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>







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    {NULL}
};

/*
 * Declarations of static variables used in this file.
 */

static TkMacOSXCursor *gCurrentCursor = NULL;
				/* A pointer to the current cursor. */
static int gResizeOverride = false;
				/* A boolean indicating whether we should use
				 * the resize cursor during installations. */
static int gTkOwnsCursor = true;/* A boolean indicating whether Tk owns the
				 * cursor. If not (for instance, in the case
				 * where a Tk window is embedded in another
				 * app's window, and the cursor is out of the
				 * Tk window, we will not attempt to adjust
				 * the cursor. */

/*
 * Declarations of procedures local to this file
 */

static void FindCursorByName(TkMacOSXCursor *macCursorPtr, const char *string);
................................................................................
		NSBitmapImageRep *bitmapImageRep = NULL;
		CGImageRef img = NULL, mask = NULL, maskedImg = NULL;
		static const CGFloat decodeWB[] = {1, 0};
		CGColorSpaceRef colorspace = CGColorSpaceCreateWithName(
			kCGColorSpaceGenericGray);
		CGDataProviderRef provider = CGDataProviderCreateWithData(NULL,
			bitmap, pix*pix/8, NULL);

		if (provider) {
		    img = CGImageCreate(pix, pix, 1, 1, pix/8, colorspace,
			    kCGBitmapByteOrderDefault, provider, decodeWB, 0,
			    kCGRenderingIntentDefault);
		    CFRelease(provider);
		}
		provider = CGDataProviderCreateWithData(NULL, bitmap +
................................................................................
		    maskedImg = CGImageCreateWithMask(img, mask);
		}
		if (maskedImg) {
		    bitmapImageRep = [[NSBitmapImageRep alloc]
			    initWithCGImage:maskedImg];
		    CFRelease(maskedImg);
		}
		if (mask) {
		    CFRelease(mask);
		}
		if (img) {
		    CFRelease(img);
		}
		if (colorspace) {
		    CFRelease(colorspace);
		}
		if (bitmapImageRep) {
		    image = [[NSImage alloc] initWithSize:NSMakeSize(pix, pix)];
		    [image addRepresentation:bitmapImageRep];
		    [bitmapImageRep release];
		}

		uint16_t *hotSpotData = (uint16_t*)(bitmap + 2*pix*pix/8);
		hotSpot.y = CFSwapInt16BigToHost(*hotSpotData++);
		hotSpot.x = CFSwapInt16BigToHost(*hotSpotData);
		haveHotSpot = 1;
		break;
	    }
	    }

Changes to macosx/tkMacOSXDefault.h.

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#define DEF_BUTTON_ANCHOR		"center"
#define DEF_BUTTON_ACTIVE_BG_COLOR	ACTIVE_BG
#define DEF_BUTTON_ACTIVE_BG_MONO	BLACK
#define DEF_BUTTON_ACTIVE_FG_COLOR	ACTIVE_FG
#define DEF_CHKRAD_ACTIVE_FG_COLOR	DEF_BUTTON_ACTIVE_FG_COLOR
#define DEF_BUTTON_ACTIVE_FG_MONO	WHITE
/* #define DEF_BUTTON_BG_COLOR	"systemButtonFace"*/
#define DEF_BUTTON_BG_COLOR		NORMAL_BG
#define DEF_BUTTON_BG_MONO		WHITE
#define DEF_BUTTON_BITMAP		""
#define DEF_BUTTON_BORDER_WIDTH		"2"
#define DEF_BUTTON_CURSOR		""
#define DEF_BUTTON_COMMAND		""
#define DEF_BUTTON_COMPOUND		"none"
................................................................................
#define DEF_ENTRY_DISABLED_BG_MONO	WHITE
#define DEF_ENTRY_DISABLED_FG		DISABLED
#define DEF_ENTRY_EXPORT_SELECTION	"1"
#define DEF_ENTRY_FONT			"TkTextFont"
#define DEF_ENTRY_FG			NORMAL_FG
#define DEF_ENTRY_HIGHLIGHT_BG		NORMAL_BG
#define DEF_ENTRY_HIGHLIGHT		BLACK
/* #define DEF_ENTRY_HIGHLIGHT_WIDTH	"3" */
#define DEF_ENTRY_HIGHLIGHT_WIDTH	"3"
#define DEF_ENTRY_INSERT_BG		NORMAL_FG
#define DEF_ENTRY_INSERT_BD_COLOR	"0"
#define DEF_ENTRY_INSERT_BD_MONO	"0"
#define DEF_ENTRY_INSERT_OFF_TIME	"300"
#define DEF_ENTRY_INSERT_ON_TIME	"600"
/* #define DEF_ENTRY_INSERT_WIDTH		"2" */
#define DEF_ENTRY_INSERT_WIDTH		"1"
#define DEF_ENTRY_JUSTIFY		"left"
#define DEF_ENTRY_PLACEHOLDER		""
#define DEF_ENTRY_PLACEHOLDERFG		"#b3b3b3"
#define DEF_ENTRY_READONLY_BG_COLOR	NORMAL_BG
#define DEF_ENTRY_READONLY_BG_MONO	WHITE
#define DEF_ENTRY_RELIEF		"sunken"
/* #define DEF_ENTRY_RELIEF		"solid" */
#define DEF_ENTRY_SCROLL_COMMAND	""
#define DEF_ENTRY_SELECT_COLOR		SELECT_BG
#define DEF_ENTRY_SELECT_MONO		BLACK
#define DEF_ENTRY_SELECT_BD_COLOR	"1"
#define DEF_ENTRY_SELECT_BD_MONO	"0"
#define DEF_ENTRY_SELECT_FG_COLOR	SELECT_FG
#define DEF_ENTRY_SELECT_FG_MONO	WHITE
................................................................................

/*
 * Defaults for menubuttons:
 */

#define DEF_MENUBUTTON_ANCHOR		"w"
#define DEF_MENUBUTTON_ACTIVE_BG_COLOR	ACTIVE_BG
#define DEF_MENUBUTTON_ACTIVE_BG_MONO	BLACK
#define DEF_MENUBUTTON_ACTIVE_FG_COLOR	ACTIVE_FG
#define DEF_MENUBUTTON_ACTIVE_FG_MONO	WHITE
#define DEF_MENUBUTTON_BG_COLOR		NORMAL_BG
#define DEF_MENUBUTTON_BG_MONO		WHITE
#define DEF_MENUBUTTON_BITMAP		""
#define DEF_MENUBUTTON_BORDER_WIDTH	"0"
#define DEF_MENUBUTTON_CURSOR		""
#define DEF_MENUBUTTON_DIRECTION	"below"
#define DEF_MENUBUTTON_DISABLED_FG_COLOR DISABLED






<







 







<






<







<







 







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#define DEF_BUTTON_ANCHOR		"center"
#define DEF_BUTTON_ACTIVE_BG_COLOR	ACTIVE_BG
#define DEF_BUTTON_ACTIVE_BG_MONO	BLACK
#define DEF_BUTTON_ACTIVE_FG_COLOR	ACTIVE_FG
#define DEF_CHKRAD_ACTIVE_FG_COLOR	DEF_BUTTON_ACTIVE_FG_COLOR
#define DEF_BUTTON_ACTIVE_FG_MONO	WHITE

#define DEF_BUTTON_BG_COLOR		NORMAL_BG
#define DEF_BUTTON_BG_MONO		WHITE
#define DEF_BUTTON_BITMAP		""
#define DEF_BUTTON_BORDER_WIDTH		"2"
#define DEF_BUTTON_CURSOR		""
#define DEF_BUTTON_COMMAND		""
#define DEF_BUTTON_COMPOUND		"none"
................................................................................
#define DEF_ENTRY_DISABLED_BG_MONO	WHITE
#define DEF_ENTRY_DISABLED_FG		DISABLED
#define DEF_ENTRY_EXPORT_SELECTION	"1"
#define DEF_ENTRY_FONT			"TkTextFont"
#define DEF_ENTRY_FG			NORMAL_FG
#define DEF_ENTRY_HIGHLIGHT_BG		NORMAL_BG
#define DEF_ENTRY_HIGHLIGHT		BLACK

#define DEF_ENTRY_HIGHLIGHT_WIDTH	"3"
#define DEF_ENTRY_INSERT_BG		NORMAL_FG
#define DEF_ENTRY_INSERT_BD_COLOR	"0"
#define DEF_ENTRY_INSERT_BD_MONO	"0"
#define DEF_ENTRY_INSERT_OFF_TIME	"300"
#define DEF_ENTRY_INSERT_ON_TIME	"600"

#define DEF_ENTRY_INSERT_WIDTH		"1"
#define DEF_ENTRY_JUSTIFY		"left"
#define DEF_ENTRY_PLACEHOLDER		""
#define DEF_ENTRY_PLACEHOLDERFG		"#b3b3b3"
#define DEF_ENTRY_READONLY_BG_COLOR	NORMAL_BG
#define DEF_ENTRY_READONLY_BG_MONO	WHITE
#define DEF_ENTRY_RELIEF		"sunken"

#define DEF_ENTRY_SCROLL_COMMAND	""
#define DEF_ENTRY_SELECT_COLOR		SELECT_BG
#define DEF_ENTRY_SELECT_MONO		BLACK
#define DEF_ENTRY_SELECT_BD_COLOR	"1"
#define DEF_ENTRY_SELECT_BD_MONO	"0"
#define DEF_ENTRY_SELECT_FG_COLOR	SELECT_FG
#define DEF_ENTRY_SELECT_FG_MONO	WHITE
................................................................................

/*
 * Defaults for menubuttons:
 */

#define DEF_MENUBUTTON_ANCHOR		"w"
#define DEF_MENUBUTTON_ACTIVE_BG_COLOR	ACTIVE_BG
#define DEF_MENUBUTTON_ACTIVE_BG_MONO	WHITE
#define DEF_MENUBUTTON_ACTIVE_FG_COLOR	ACTIVE_FG
#define DEF_MENUBUTTON_ACTIVE_FG_MONO	BLACK
#define DEF_MENUBUTTON_BG_COLOR		NORMAL_BG
#define DEF_MENUBUTTON_BG_MONO		WHITE
#define DEF_MENUBUTTON_BITMAP		""
#define DEF_MENUBUTTON_BORDER_WIDTH	"0"
#define DEF_MENUBUTTON_CURSOR		""
#define DEF_MENUBUTTON_DIRECTION	"below"
#define DEF_MENUBUTTON_DISABLED_FG_COLOR DISABLED

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#if MAC_OS_X_VERSION_MIN_REQUIRED < 1090
#define modalOK     NSOKButton
#define modalCancel NSCancelButton
#else
#define modalOK     NSModalResponseOK
#define modalCancel NSModalResponseCancel
#endif
#define modalOther  -1
#define modalError  -2


/*Vars for filtering in "open file" and "save file" dialogs.*/


typedef struct {

    bool doFileTypes; // show the accessory view which displays the filter menu
    bool preselectFilter; // a filter was selected by the typevariable

    bool userHasSelectedFilter; // The user has changed the filter in the accessory view


    NSMutableArray *fileTypeNames; // array of names, e.g. "Text document"

    NSMutableArray *fileTypeExtensions; // array of allowed extensions per name, e.g. "txt", "doc"

    NSMutableArray *fileTypeLabels; // displayed string, e.g. "Text document (.txt, .doc)"

    NSMutableArray *fileTypeAllowsAll; // boolean if the all pattern (*.*) is included


    NSMutableArray *allowedExtensions; // set of all allowed extensions
    bool allowedExtensionsAllowAll; // set of all allowed extensions includes *.*


    NSUInteger fileTypeIndex; // index of currently selected filter

} filepanelFilterInfo;

filepanelFilterInfo filterInfo;

NSOpenPanel *openpanel;
NSSavePanel *savepanel;

static const char *const colorOptionStrings[] = {
    "-initialcolor", "-parent", "-title", NULL
};
enum colorOptions {
    COLOR_INITIAL, COLOR_PARENT, COLOR_TITLE
};
................................................................................
    [TYPE_OKCANCEL] =		{3, 4, 0},
    [TYPE_RETRYCANCEL] =	{1, 4, 0},
    [TYPE_YESNO] =		{6, 5, 0},
    [TYPE_YESNOCANCEL] =	{6, 5, 4},
};

/*
 * Construct a file URL from directory and filename.  Either may
 * be nil.  If both are nil, returns nil.
 */



static NSURL *getFileURL(NSString *directory, NSString *filename) {


    NSURL *url = nil;
    if (directory) {
	url = [NSURL fileURLWithPath:directory isDirectory:YES];
    }
    if (filename) {
	url = [NSURL URLWithString:filename relativeToURL:url];
    }
................................................................................
    }
    if (callbackInfo->cmdObj) {
	Tcl_DecrRefCount(callbackInfo->cmdObj);
	ckfree(callbackInfo);
    }
}


- (void) tkAlertDidEnd: (NSAlert *) alert returnCode: (NSInteger) returnCode
	contextInfo: (void *) contextInfo
{
    AlertCallbackInfo *callbackInfo = contextInfo;

    if (returnCode >= NSAlertFirstButtonReturn) {
	Tcl_Obj *resultObj = Tcl_NewStringObj(alertButtonStrings[
................................................................................

- (void)selectFormat:(id)sender  {
    NSPopUpButton *button      = (NSPopUpButton *)sender;
    filterInfo.fileTypeIndex   = [button indexOfSelectedItem];

    if ([[filterInfo.fileTypeAllowsAll objectAtIndex:filterInfo.fileTypeIndex] boolValue]) {
	[openpanel setAllowsOtherFileTypes:YES];


	/* setAllowsOtherFileTypes might have no effect; it's inherited from the
	 * NSSavePanel, where it has the effect that it does not append an extension
	 * Setting the allowed file types to nil allows selecting any file */



	[openpanel setAllowedFileTypes:nil];
    } else {

	NSMutableArray *allowedtypes = [filterInfo.fileTypeExtensions objectAtIndex:filterInfo.fileTypeIndex];
	[openpanel setAllowedFileTypes:allowedtypes];
	[openpanel setAllowsOtherFileTypes:NO];
    }

    filterInfo.userHasSelectedFilter = true;
}

................................................................................
    NSPopUpButton *button     = (NSPopUpButton *)sender;
    filterInfo.fileTypeIndex  = [button indexOfSelectedItem];

    if ([[filterInfo.fileTypeAllowsAll objectAtIndex:filterInfo.fileTypeIndex] boolValue]) {
	[savepanel setAllowsOtherFileTypes:YES];
	[savepanel setAllowedFileTypes:nil];
    } else {

	NSMutableArray *allowedtypes = [filterInfo.fileTypeExtensions objectAtIndex:filterInfo.fileTypeIndex];
	[savepanel setAllowedFileTypes:allowedtypes];
	[savepanel setAllowsOtherFileTypes:NO];
    }

    filterInfo.userHasSelectedFilter = true;
}

................................................................................
    [colorPanel orderOut:NSApp];
    [colorPanel setContinuous:NO];
    [colorPanel setBecomesKeyOnlyIfNeeded:NO];
    [colorPanel setShowsAlpha: NO];
    [colorPanel _setUseModalAppearance:YES];
    if (title) {
	NSString *s = [[NSString alloc] initWithUTF8String:title];

	[colorPanel setTitle:s];
	[s release];
    }
    if (initialColor) {
	[colorPanel setColor:initialColor];
    }
    returnCode = [NSApp runModalForWindow:colorPanel];
................................................................................
    }
    result = TCL_OK;

end:
    return result;
}


/* dissect the -filetype nested lists and store the information
 * in the filterInfo structure */






int parseFileFilters(Tcl_Interp *interp, Tcl_Obj *fileTypesPtr, Tcl_Obj *typeVariablePtr) {


    if (!fileTypesPtr) {
	filterInfo.doFileTypes = false;
	return TCL_OK;
    }

    FileFilterList fl;

    TkInitFileFilters(&fl);
    if (TkGetFileFilters(interp, &fl, fileTypesPtr, 0) != TCL_OK) {
	TkFreeFileFilters(&fl);
	return TCL_ERROR;
    }

    filterInfo.doFileTypes = (fl.filters != NULL);
................................................................................

    filterInfo.allowedExtensions = [NSMutableArray array];
    filterInfo.allowedExtensionsAllowAll = NO;

    if (filterInfo.doFileTypes) {
	for (FileFilter *filterPtr = fl.filters; filterPtr;
		filterPtr = filterPtr->next) {
	    NSString * name = [[NSString alloc] initWithUTF8String: filterPtr -> name];

	    [filterInfo.fileTypeNames addObject:name];
	    [name release];
	    NSMutableArray * clauseextensions = [NSMutableArray array];
	    NSMutableArray * displayextensions = [NSMutableArray array];
	    bool allowsAll = NO;

	    for (FileFilterClause *clausePtr = filterPtr->clauses; clausePtr;
		    clausePtr = clausePtr->next) {

		for (GlobPattern *globPtr = clausePtr->patterns; globPtr;
			globPtr = globPtr->next) {
		    const char *str = globPtr->pattern;
		    while (*str && (*str == '*' || *str == '.')) {
		    	str++;
		     }
		    if (*str) {
			NSString *extension = [[NSString alloc] initWithUTF8String:str];
			if (![filterInfo.allowedExtensions containsObject:extension]) {
			    [filterInfo.allowedExtensions addObject:extension];
			}

			[clauseextensions addObject:extension];
			[displayextensions addObject:[@"." stringByAppendingString:extension]];

			[extension release];
		    } else {

			// it is the all pattern (*, .* or *.*)


			allowsAll = YES;
			filterInfo.allowedExtensionsAllowAll = YES;
			[displayextensions addObject:@"*"];
		    }
		}
	    }
	    [filterInfo.fileTypeExtensions addObject:clauseextensions];
	    [filterInfo.fileTypeAllowsAll addObject:[NSNumber numberWithBool:allowsAll]];

	    NSMutableString * label = [[NSMutableString alloc] initWithString:name];
	    [label appendString:@" ("];
	    [label appendString:[displayextensions componentsJoinedByString:@", "]];
	    [label appendString:@")"];
	    [filterInfo.fileTypeLabels addObject:label];
	    [label release];

	}




	/* Check if the typevariable exists and matches one of the names */
	filterInfo.preselectFilter = false;
	filterInfo.userHasSelectedFilter = false;
	if (typeVariablePtr) {

	    /* extract the variable content as a NSString */


	    Tcl_Obj *selectedFileTypeObj = Tcl_ObjGetVar2(interp, typeVariablePtr, NULL, TCL_GLOBAL_ONLY);



	    /* check that the typevariable exists */


	    if (selectedFileTypeObj != NULL) {

		const char *selectedFileType = Tcl_GetString(selectedFileTypeObj);

		NSString *selectedFileTypeStr = [[NSString alloc] initWithUTF8String:selectedFileType];

		NSUInteger index = [filterInfo.fileTypeNames indexOfObject:selectedFileTypeStr];

		if (index != NSNotFound) {
		    filterInfo.fileTypeIndex = index;
		    filterInfo.preselectFilter = true;
		}
	    }
	}
................................................................................

    }

    TkFreeFileFilters(&fl);
    return TCL_OK;
}



bool filterCompatible(NSString *extension, int filterIndex) {



    NSMutableArray *allowedExtensions = [filterInfo.fileTypeExtensions objectAtIndex: filterIndex];


    /* If this contains the all pattern, accept any extension */


    if ([[filterInfo.fileTypeAllowsAll objectAtIndex:filterIndex] boolValue]) {
	return true;
    }

    return [allowedExtensions containsObject: extension];
}

 
/*
 *----------------------------------------------------------------------
 *
 * Tk_GetOpenFileObjCmd --
 *
 *	This procedure implements the "open file" dialog box for the Mac
................................................................................
	    break;
	}
    }

    if (title) {
	[openpanel setTitle:title];


	/* From OSX 10.11, the title string is silently ignored in the open panel.
	 * Prepend the title to the message in this case
	 * NOTE should be conditional on OSX version, but
	 * -mmacosx-version-min does not revert this behaviour*/


	if (message) {

	    NSString *fullmessage = [[NSString alloc] initWithFormat:@"%@\n%@",title,message];
	    [message release];
	    [title release];
	    message = fullmessage;
	} else {
	    message = title;
	}
    }
................................................................................
    [openpanel setAllowsMultipleSelection:multiple];

    if (parseFileFilters(interp, fileTypesPtr, typeVariablePtr) != TCL_OK) {
	goto end;
    }

    if (filterInfo.doFileTypes) {

	NSView  *accessoryView = [[NSView alloc] initWithFrame:NSMakeRect(0.0, 0.0, 300, 32.0)];
	NSTextField *label = [[NSTextField alloc] initWithFrame:NSMakeRect(0, 0, 60, 22)];


	[label setEditable:NO];
	[label setStringValue:@"Filter:"];
	[label setBordered:NO];
	[label setBezeled:NO];
	[label setDrawsBackground:NO];


	NSPopUpButton *popupButton = [[NSPopUpButton alloc] initWithFrame:NSMakeRect(50.0, 2, 240, 22.0) pullsDown:NO];

	[popupButton addItemsWithTitles:filterInfo.fileTypeLabels];
	[popupButton setAction:@selector(selectFormat:)];

	[accessoryView addSubview:label];
	[accessoryView addSubview:popupButton];

	if (filterInfo.preselectFilter) {

	    /* A specific filter was selected from the typevariable. Select it and
	     * open the accessory view */


	    [popupButton selectItemAtIndex:filterInfo.fileTypeIndex];


	    /* on OSX > 10.11, the optons are not visible by default. Ergo allow all file types

	    [openpanel setAllowedFileTypes:filterInfo.fileTypeExtensions[filterInfo.fileTypeIndex]];
	    */
	    [openpanel setAllowedFileTypes:filterInfo.allowedExtensions];
	} else {
	    [openpanel setAllowedFileTypes:filterInfo.allowedExtensions];
	}

................................................................................
	    [openpanel setAllowsOtherFileTypes:YES];
	} else {
	    [openpanel setAllowsOtherFileTypes:NO];
	}

	[openpanel setAccessoryView:accessoryView];
    } else {

	/* No filters are given. Allow picking all files */


	[openpanel setAllowsOtherFileTypes:YES];
    }

    if (cmdObj) {
	callbackInfo = ckalloc(sizeof(FilePanelCallbackInfo));
	if (Tcl_IsShared(cmdObj)) {
	    cmdObj = Tcl_DuplicateObj(cmdObj);
................................................................................

    callbackInfo->cmdObj = cmdObj;
    callbackInfo->interp = interp;
    callbackInfo->multiple = multiple;
    parent = TkMacOSXDrawableWindow(((TkWindow *) tkwin)->window);
    if (haveParentOption && parent && ![parent attachedSheet]) {
	parentIsKey = [parent isKeyWindow];
	if (directory || filename ) {
	    NSURL * fileURL = getFileURL(directory, filename);

	    [openpanel setDirectoryURL:fileURL];
	}

	[openpanel beginSheetModalForWindow:parent
	       completionHandler:^(NSInteger returnCode)
	       { [NSApp tkFilePanelDidEnd:openpanel
		       returnCode:returnCode
		       contextInfo:callbackInfo ]; } ];

	modalReturnCode = cmdObj ? modalOther : [NSApp runModalForWindow:openpanel];

    } else {
	if (directory || filename ) {
	    NSURL * fileURL = getFileURL(directory, filename);

	    [openpanel setDirectoryURL:fileURL];
	}

	modalReturnCode = [openpanel runModal];
	[NSApp tkFilePanelDidEnd:openpanel returnCode:modalReturnCode
		contextInfo:callbackInfo];
    }
    result = (modalReturnCode != modalError) ? TCL_OK : TCL_ERROR;
    if (parentIsKey) {
	[parent makeKeyWindow];
    }

    if ((typeVariablePtr && (modalReturnCode == NSOKButton)) &&
	filterInfo.doFileTypes) {
	/*
	 * The -typevariable must be set to the selected file type, if the dialog was not cancelled

	 */

	NSUInteger selectedFilterIndex = filterInfo.fileTypeIndex;
	NSString *selectedFilter = NULL;

	if (filterInfo.userHasSelectedFilter) {
	    selectedFilterIndex = filterInfo.fileTypeIndex;
	    selectedFilter = [filterInfo.fileTypeNames objectAtIndex:selectedFilterIndex];
	} else {

	    /* Difficult case: the user has not touched the filter settings, but we must
	     * return something in the typevariable. First check if the preselected type is compatible

	     * with the selected file, otherwise choose the first compatible type from the list,
	     * finally fall back to the empty string */


	    NSURL *selectedFile;

	    if (multiple) {

		// Use the first file in the case of multiple selection
		// Anyway it is not overly useful here

		selectedFile = [[openpanel URLs] objectAtIndex:0];
	    } else {
		selectedFile = [openpanel URL];
	    }

	    NSString *extension = [selectedFile pathExtension];

	    if (filterInfo.preselectFilter &&
		filterCompatible(extension, filterInfo.fileTypeIndex)) {
		selectedFilterIndex = filterInfo.fileTypeIndex;  // The preselection from the typevariable
		selectedFilter = [filterInfo.fileTypeNames objectAtIndex:selectedFilterIndex];
	    } else {
		// scan the list
		NSUInteger i;

		for (i = 0; i < [filterInfo.fileTypeNames count]; i++) {
		    if (filterCompatible(extension, i)) {
			selectedFilterIndex = i;
			break;
		    }
		}
		if (i == selectedFilterIndex) {
		    selectedFilter = [filterInfo.fileTypeNames objectAtIndex:selectedFilterIndex];
		} else {
		    selectedFilter = @"";
		}

	    }
	}

	Tcl_ObjSetVar2(interp, typeVariablePtr, NULL,
		Tcl_NewStringObj([selectedFilter UTF8String], -1), TCL_GLOBAL_ONLY);

    }


  end:
    return result;
}

 
/*
 *----------------------------------------------------------------------
 *
 * Tk_GetSaveFileObjCmd --
 *
 *	This procedure implements the "save file" dialog box for the Mac
................................................................................
 *	platform. See the user documentation for details on what it does.
 *
 * Results:
 *	A standard Tcl result.
 *
 * Side effects:
 *	See user documentation.

 *----------------------------------------------------------------------
 */

int
Tk_GetSaveFileObjCmd(
    ClientData clientData,	/* Main window associated with interpreter. */
    Tcl_Interp *interp,		/* Current interpreter. */
................................................................................
    int index, len;
    Tcl_Obj *cmdObj = NULL, *typeVariablePtr = NULL, *fileTypesPtr = NULL;
    FilePanelCallbackInfo callbackInfoStruct;
    FilePanelCallbackInfo *callbackInfo = &callbackInfoStruct;
    NSString *directory = nil, *filename = nil, *defaultType = nil;
    NSString *message = nil, *title = nil;
    NSWindow *parent;
    savepanel =  [NSSavePanel savePanel];
    NSInteger modalReturnCode = modalError;
    BOOL parentIsKey = NO;

    for (i = 1; i < objc; i += 2) {
	if (Tcl_GetIndexFromObjStruct(interp, objv[i], saveOptionStrings,
		sizeof(char *), "option", TCL_EXACT, &index) != TCL_OK) {
	    goto end;
................................................................................
		break;
	}
    }

    if (title) {
	[savepanel setTitle:title];


	/* From OSX 10.11, the title string is silently ignored, if the save panel is a sheet.
	 * Prepend the title to the message in this case
	 * NOTE should be conditional on OSX version, but
	 * -mmacosx-version-min does not revert this behaviour*/


	if (haveParentOption) {
	    if (message) {

		NSString *fullmessage = [[NSString alloc] initWithFormat:@"%@\n%@",title,message];
		[message release];
		[title release];
		message = fullmessage;
	    } else {
		message = title;
	    }
	}
................................................................................
    }

    if (parseFileFilters(interp, fileTypesPtr, typeVariablePtr) != TCL_OK) {
	goto end;
    }

    if (filterInfo.doFileTypes) {

	NSView  *accessoryView = [[NSView alloc] initWithFrame:NSMakeRect(0.0, 0.0, 300, 32.0)];
	NSTextField *label = [[NSTextField alloc] initWithFrame:NSMakeRect(0, 0, 60, 22)];


	[label setEditable:NO];
	[label setStringValue:NSLocalizedString(@"Format:", nil)];
	[label setBordered:NO];
	[label setBezeled:NO];
	[label setDrawsBackground:NO];


	NSPopUpButton *popupButton = [[NSPopUpButton alloc] initWithFrame:NSMakeRect(50.0, 2, 340, 22.0) pullsDown:NO];

	[popupButton addItemsWithTitles:filterInfo.fileTypeLabels];
	[popupButton selectItemAtIndex:filterInfo.fileTypeIndex];
	[popupButton setAction:@selector(saveFormat:)];

	[accessoryView addSubview:label];
	[accessoryView addSubview:popupButton];

	[savepanel setAccessoryView:accessoryView];

	[savepanel setAllowedFileTypes:[filterInfo.fileTypeExtensions objectAtIndex:filterInfo.fileTypeIndex]];
	[savepanel setAllowsOtherFileTypes:filterInfo.allowedExtensionsAllowAll];
    } else if (defaultType) {

	/* If no filetypes are given, defaultextension is an alternative way
	 * to specify the attached extension. Just propose this extension,
	 * but don't display an accessory view */


	NSMutableArray *AllowedFileTypes = [NSMutableArray array];

	[AllowedFileTypes addObject:defaultType];
	[savepanel setAllowedFileTypes:AllowedFileTypes];
	[savepanel setAllowsOtherFileTypes:YES];
    }

    [savepanel setCanSelectHiddenExtension:YES];
    [savepanel setExtensionHidden:NO];
................................................................................
    }
    callbackInfo->cmdObj = cmdObj;
    callbackInfo->interp = interp;
    callbackInfo->multiple = 0;

    parent = TkMacOSXDrawableWindow(((TkWindow *) tkwin)->window);
    if (haveParentOption && parent && ![parent attachedSheet]) {
       parentIsKey = [parent isKeyWindow];
       if (directory) {
	    [savepanel setDirectoryURL:[NSURL fileURLWithPath:directory isDirectory:YES]];
	}


	   /*check for file name, otherwise set to empty string; crashes with uncaught exception if set to nil*/



	if (filename) {
	    [savepanel setNameFieldStringValue:filename];
	} else {
	    [savepanel setNameFieldStringValue:@""];
	}
	[savepanel beginSheetModalForWindow:parent
	       completionHandler:^(NSInteger returnCode)
	       { [NSApp tkFilePanelDidEnd:savepanel
		       returnCode:returnCode
		       contextInfo:callbackInfo ]; } ];

	modalReturnCode = cmdObj ? modalOther : [NSApp runModalForWindow:savepanel];

    } else {
	if (directory) {
	    [savepanel setDirectoryURL:[NSURL fileURLWithPath:directory isDirectory:YES]];
	}


	 /*check for file name, otherwise set to empty string; crashes with uncaught exception if set to nil*/



	if (filename) {
	    [savepanel setNameFieldStringValue:filename];
	} else {
	    [savepanel setNameFieldStringValue:@""];
	}
	modalReturnCode = [savepanel runModal];
	[NSApp tkFilePanelDidEnd:savepanel returnCode:modalReturnCode
................................................................................
		contextInfo:callbackInfo];
    }
    result = (modalReturnCode != modalError) ? TCL_OK : TCL_ERROR;
    if (parentIsKey) {
	[parent makeKeyWindow];
    }

    if ((typeVariablePtr && (modalReturnCode == NSOKButton)) && filterInfo.doFileTypes) {

	/*
	 * The -typevariable must be set to the selected file type, if the dialog was not cancelled

	 */


	NSString * selectedFilter = [filterInfo.fileTypeNames objectAtIndex:filterInfo.fileTypeIndex];
	Tcl_ObjSetVar2(interp, typeVariablePtr, NULL,
		Tcl_NewStringObj([selectedFilter UTF8String], -1), TCL_GLOBAL_ONLY);

    }


  end:
    return result;
}
 
/*
 *----------------------------------------------------------------------
................................................................................
	    cmdObj = Tcl_DuplicateObj(cmdObj);
	}
	Tcl_IncrRefCount(cmdObj);
    }
    callbackInfo->cmdObj = cmdObj;
    callbackInfo->interp = interp;
    callbackInfo->multiple = 0;


    /*check for directory value, set to root if not specified; otherwise crashes with exception because of nil string parameter*/



    if (!directory) {
	directory = @"/";
    }
    parent = TkMacOSXDrawableWindow(((TkWindow *) tkwin)->window);
    if (haveParentOption && parent && ![parent attachedSheet]) {
	parentIsKey = [parent isKeyWindow];
	[panel setDirectoryURL:[NSURL fileURLWithPath:directory isDirectory:YES]];
	[panel beginSheetModalForWindow:parent
	       completionHandler:^(NSInteger returnCode)
	       { [NSApp tkFilePanelDidEnd:panel
		       returnCode:returnCode
		       contextInfo:callbackInfo ]; } ];

	modalReturnCode = cmdObj ? modalOther : [NSApp runModalForWindow:panel];
    } else {
	[panel setDirectoryURL:[NSURL fileURLWithPath:directory isDirectory:YES]];
	modalReturnCode = [panel runModal];
	[NSApp tkFilePanelDidEnd:panel returnCode:modalReturnCode
		contextInfo:callbackInfo];
    }
................................................................................

    /*
     * This replaces the old about dialog with a standard alert that displays
     * correctly on 10.14.
     */

    NSString *version =  @"Tcl " TCL_PATCH_LEVEL " & Tk " TCL_PATCH_LEVEL;
    NSString *url =   @"www.tcl-lang.org";
    NSTextView *credits = [[NSTextView alloc] initWithFrame:NSMakeRect(0,0,300,300)];
    NSFont *font = [NSFont systemFontOfSize:[NSFont systemFontSize]];
    NSDictionary *textAttributes = [NSDictionary dictionaryWithObject:font
					        forKey:NSFontAttributeName];

    [credits insertText: [[NSAttributedString alloc]
		 initWithString:[NSString stringWithFormat: @"\n"
		"Tcl and Tk are distributed under a modified BSD license: "
		"www.tcl.tk/software/tcltk/license.html\n\n"
		"%1$C 1987-%[email protected] Tcl Core Team and Contributers.\n\n"
		"%1$C 2011-%[email protected] Kevin Walzer/WordTech Communications LLC.\n\n"
		"%1$C 2014-%[email protected] Marc Culler.\n\n"
		"%1$C 2002-2012 Daniel A. Steffen.\n\n"
		"%1$C 2001-2009 Apple Inc.\n\n"
		"%1$C 2001-2002 Jim Ingham & Ian Reid\n\n"
		"%1$C 1998-2000 Jim Ingham & Ray Johnson\n\n"
		"%1$C 1998-2000 Scriptics Inc.\n\n"
		"%1$C 1996-1997 Sun Microsystems Inc.", 0xA9, year]
	     attributes:textAttributes]
             replacementRange:NSMakeRange(0,0)];
    [credits setDrawsBackground:NO];
    [credits setEditable:NO];

     NSAlert *about = [[NSAlert alloc] init];

    [[about window] setTitle:@"About Tcl & Tk"];
    [about setMessageText: version];
    [about setInformativeText:url];
    about.accessoryView = credits;
    [about runModal];
    [about release];
}
................................................................................
    if (indexDefaultOption) {
	/*
	 * Any '-default' option needs to know the '-type' option, which is
	 * why we do this here.
	 */

	if (Tcl_GetIndexFromObjStruct(interp, objv[indexDefaultOption + 1],
		alertButtonStrings, sizeof(char *), "-default value", TCL_EXACT, &index) != TCL_OK) {

	    goto end;
	}

	/*
	 * Need to map from "ok" etc. to 1, 2, 3, right to left.
	 */

................................................................................
	    goto end;
	}
    }
    [alert setIcon:[NSApp applicationIconImage]];
    [alert setAlertStyle:alertStyles[iconIndex]];
    i = 0;
    while (i < 3 && alertButtonNames[typeIndex][i]) {
	[alert addButtonWithTitle:(NSString*)alertButtonNames[typeIndex][i++]];
    }
    buttons = [alert buttons];
    for (NSButton *b in buttons) {
	NSString *ke = [b keyEquivalent];

	if (([ke isEqualToString:@"\r"] || [ke isEqualToString:@"\033"]) &&
		![b keyEquivalentModifierMask]) {
................................................................................
    callbackInfo->interp = interp;
    callbackInfo->typeIndex = typeIndex;
    parent = TkMacOSXDrawableWindow(((TkWindow *) tkwin)->window);
    if (haveParentOption && parent && ![parent attachedSheet]) {
	parentIsKey = [parent isKeyWindow];
#if MAC_OS_X_VERSION_MIN_REQUIRED > 1090
 	[alert beginSheetModalForWindow:parent
	       completionHandler:^(NSModalResponse returnCode)
	       { [NSApp tkAlertDidEnd:alert
			returnCode:returnCode
			contextInfo:callbackInfo ]; } ];

#else
	[alert beginSheetModalForWindow:parent
	       modalDelegate:NSApp
	       didEndSelector:@selector(tkAlertDidEnd:returnCode:contextInfo:)
	       contextInfo:callbackInfo];
#endif
	modalReturnCode = cmdObj ? 0 :
................................................................................

typedef struct FontchooserData {
    Tcl_Obj *titleObj;
    Tcl_Obj *cmdObj;
    Tk_Window parent;
} FontchooserData;

enum FontchooserEvent { FontchooserClosed, FontchooserSelection };




static void		FontchooserEvent(int kind);
static Tcl_Obj *	FontchooserCget(FontchooserData *fcdPtr,
			    int optionIndex);
static int		FontchooserConfigureCmd(ClientData clientData,
			    Tcl_Interp *interp, int objc,
			    Tcl_Obj *const objv[]);
................................................................................
@end
 
/*
 *----------------------------------------------------------------------
 *
 * FontchooserEvent --
 *
 *	This processes events generated by user interaction with the
 *	font panel.
 *
 * Results:
 *	None.
 *
 * Side effects:
 *	Additional events may be place on the Tk event queue.
 *
................................................................................
}
 
/*
 *----------------------------------------------------------------------
 *
 * FontchooserCget --
 *
 *	Helper for the FontchooserConfigure command to return the
 *	current value of any of the options (which may be NULL in
 *	the structure)
 *
 * Results:
 *	Tcl object of option value.
 *
 * Side effects:
 *	None.
 *
................................................................................
}
 
/*
 * ----------------------------------------------------------------------
 *
 * FontchooserConfigureCmd --
 *
 *	Implementation of the 'tk fontchooser configure' ensemble command.
 *	See the user documentation for what it does.
 *
 * Results:
 *	See the user documentation.
 *
 * Side effects:
 *	Per-interp data structure may be modified
 *
................................................................................
	    NSFontPanel *fp = [fm fontPanel:NO];

	    [fp setPanelFont:fontPanelFont isMultiple:NO];
	    [fm setSelectedFont:fontPanelFont isMultiple:NO];
	    [fm setSelectedAttributes:fontPanelFontAttributes
		    isMultiple:NO];
	    if ([fp isVisible]) {
		TkSendVirtualEvent(fcdPtr->parent, "TkFontchooserFontChanged", NULL);

	    }
	    break;
	case FontchooserCmd:
	    if (fcdPtr->cmdObj) {
		Tcl_DecrRefCount(fcdPtr->cmdObj);
	    }
	    Tcl_GetStringFromObj(objv[i+1], &len);
................................................................................
}
 
/*
 * ----------------------------------------------------------------------
 *
 * FontchooserShowCmd --
 *
 *	Implements the 'tk fontchooser show' ensemble command. The
 *	per-interp configuration data for the dialog is held in an interp
 *	associated structure.
 *
 * Results:
 *	See the user documentation.
 *
 * Side effects:
 *	Font Panel may be shown.
 *
................................................................................
	    NULL);

    if (fcdPtr->parent == None) {
	fcdPtr->parent = (Tk_Window) clientData;
	Tk_CreateEventHandler(fcdPtr->parent, StructureNotifyMask,
		FontchooserParentEventHandler, fcdPtr);
    }

    NSFontManager *fm = [NSFontManager sharedFontManager];
    NSFontPanel *fp = [fm fontPanel:YES];

    if ([fp delegate] != NSApp) {
	[fp setDelegate:NSApp];
    }
    if (![fp isVisible]) {
	[fm orderFrontFontPanel:NSApp];
	TkSendVirtualEvent(fcdPtr->parent, "TkFontchooserVisibility", NULL);
    }
................................................................................
}
 
/*
 * ----------------------------------------------------------------------
 *
 * FontchooserHideCmd --
 *
 *	Implementation of the 'tk fontchooser hide' ensemble. See the
 *	user documentation for details.
 *
 * Results:
 *	See the user documentation.
 *
 * Side effects:
 *	Font Panel may be hidden.
 *
................................................................................
FontchooserHideCmd(
    ClientData clientData,	/* Main window */
    Tcl_Interp *interp,
    int objc,
    Tcl_Obj *const objv[])
{
    NSFontPanel *fp = [[NSFontManager sharedFontManager] fontPanel:NO];

    if ([fp isVisible]) {
	[fp orderOut:NSApp];
    }
    return TCL_OK;
}
 
/*
................................................................................
}
 
/*
 * ----------------------------------------------------------------------
 *
 * TkInitFontchooser --
 *
 *	Associate the font chooser configuration data with the Tcl
 *	interpreter. There is one font chooser per interp.
 *
 * Results:
 *	None.
 *
 * Side effects:
 *	per-interp configuration data is destroyed.
 *






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#if MAC_OS_X_VERSION_MIN_REQUIRED < 1090
#define modalOK     NSOKButton
#define modalCancel NSCancelButton
#else
#define modalOK     NSModalResponseOK
#define modalCancel NSModalResponseCancel
#endif // MAC_OS_X_VERSION_MIN_REQUIRED < 1090
#define modalOther  -1
#define modalError  -2

/*
 * Vars for filtering in "open file" and "save file" dialogs.
 */

typedef struct {
    bool doFileTypes;			/* Show the accessory view which
					 * displays the filter menu */
    bool preselectFilter;		/* A filter was selected by the
					 * typevariable. */
    bool userHasSelectedFilter;		/* The user has changed the filter in

					 * the accessory view. */
    NSMutableArray *fileTypeNames;	/* Array of names, e.g. "Text
					 * document". */
    NSMutableArray *fileTypeExtensions;	/* Array of allowed extensions per
					 * name, e.g. "txt", "doc". */
    NSMutableArray *fileTypeLabels;	/* Displayed string, e.g. "Text
					 * document (.txt, .doc)". */
    NSMutableArray *fileTypeAllowsAll;	/* Boolean if the all pattern (*.*) is

					 * included. */
    NSMutableArray *allowedExtensions;	/* Set of all allowed extensions. */
    bool allowedExtensionsAllowAll;	/* Set of all allowed extensions

					 * includes *.* */
    NSUInteger fileTypeIndex;		/* Index of currently selected
					 * filter. */
} filepanelFilterInfo;

static filepanelFilterInfo filterInfo;

static NSOpenPanel *openpanel;
static NSSavePanel *savepanel;

static const char *const colorOptionStrings[] = {
    "-initialcolor", "-parent", "-title", NULL
};
enum colorOptions {
    COLOR_INITIAL, COLOR_PARENT, COLOR_TITLE
};
................................................................................
    [TYPE_OKCANCEL] =		{3, 4, 0},
    [TYPE_RETRYCANCEL] =	{1, 4, 0},
    [TYPE_YESNO] =		{6, 5, 0},
    [TYPE_YESNOCANCEL] =	{6, 5, 4},
};

/*
 * Construct a file URL from directory and filename. Either may be nil. If both
 * are nil, returns nil.
 */

static NSURL *
getFileURL(
    NSString *directory,
    NSString *filename)
{
    NSURL *url = nil;
    if (directory) {
	url = [NSURL fileURLWithPath:directory isDirectory:YES];
    }
    if (filename) {
	url = [NSURL URLWithString:filename relativeToURL:url];
    }
................................................................................
    }
    if (callbackInfo->cmdObj) {
	Tcl_DecrRefCount(callbackInfo->cmdObj);
	ckfree(callbackInfo);
    }
}


- (void) tkAlertDidEnd: (NSAlert *) alert returnCode: (NSInteger) returnCode
	contextInfo: (void *) contextInfo
{
    AlertCallbackInfo *callbackInfo = contextInfo;

    if (returnCode >= NSAlertFirstButtonReturn) {
	Tcl_Obj *resultObj = Tcl_NewStringObj(alertButtonStrings[
................................................................................

- (void)selectFormat:(id)sender  {
    NSPopUpButton *button      = (NSPopUpButton *)sender;
    filterInfo.fileTypeIndex   = [button indexOfSelectedItem];

    if ([[filterInfo.fileTypeAllowsAll objectAtIndex:filterInfo.fileTypeIndex] boolValue]) {
	[openpanel setAllowsOtherFileTypes:YES];

	/*
	 * setAllowsOtherFileTypes might have no effect; it's inherited from
	 * the NSSavePanel, where it has the effect that it does not append an
	 * extension. Setting the allowed file types to nil allows selecting
	 * any file.
	 */

	[openpanel setAllowedFileTypes:nil];
    } else {
	NSMutableArray *allowedtypes =
		[filterInfo.fileTypeExtensions objectAtIndex:filterInfo.fileTypeIndex];
	[openpanel setAllowedFileTypes:allowedtypes];
	[openpanel setAllowsOtherFileTypes:NO];
    }

    filterInfo.userHasSelectedFilter = true;
}

................................................................................
    NSPopUpButton *button     = (NSPopUpButton *)sender;
    filterInfo.fileTypeIndex  = [button indexOfSelectedItem];

    if ([[filterInfo.fileTypeAllowsAll objectAtIndex:filterInfo.fileTypeIndex] boolValue]) {
	[savepanel setAllowsOtherFileTypes:YES];
	[savepanel setAllowedFileTypes:nil];
    } else {
	NSMutableArray *allowedtypes =
		[filterInfo.fileTypeExtensions objectAtIndex:filterInfo.fileTypeIndex];
	[savepanel setAllowedFileTypes:allowedtypes];
	[savepanel setAllowsOtherFileTypes:NO];
    }

    filterInfo.userHasSelectedFilter = true;
}

................................................................................
    [colorPanel orderOut:NSApp];
    [colorPanel setContinuous:NO];
    [colorPanel setBecomesKeyOnlyIfNeeded:NO];
    [colorPanel setShowsAlpha: NO];
    [colorPanel _setUseModalAppearance:YES];
    if (title) {
	NSString *s = [[NSString alloc] initWithUTF8String:title];

	[colorPanel setTitle:s];
	[s release];
    }
    if (initialColor) {
	[colorPanel setColor:initialColor];
    }
    returnCode = [NSApp runModalForWindow:colorPanel];
................................................................................
    }
    result = TCL_OK;

end:
    return result;
}

/*
 * Dissect the -filetype nested lists and store the information in the
 * filterInfo structure.
 */

static int
parseFileFilters(
    Tcl_Interp *interp,
    Tcl_Obj *fileTypesPtr,
    Tcl_Obj *typeVariablePtr)
{

    if (!fileTypesPtr) {
	filterInfo.doFileTypes = false;
	return TCL_OK;
    }

    FileFilterList fl;

    TkInitFileFilters(&fl);
    if (TkGetFileFilters(interp, &fl, fileTypesPtr, 0) != TCL_OK) {
	TkFreeFileFilters(&fl);
	return TCL_ERROR;
    }

    filterInfo.doFileTypes = (fl.filters != NULL);
................................................................................

    filterInfo.allowedExtensions = [NSMutableArray array];
    filterInfo.allowedExtensionsAllowAll = NO;

    if (filterInfo.doFileTypes) {
	for (FileFilter *filterPtr = fl.filters; filterPtr;
		filterPtr = filterPtr->next) {
	    NSString *name = [[NSString alloc] initWithUTF8String: filterPtr->name];

	    [filterInfo.fileTypeNames addObject:name];
	    [name release];
	    NSMutableArray *clauseextensions = [NSMutableArray array];
	    NSMutableArray *displayextensions = [NSMutableArray array];
	    bool allowsAll = NO;

	    for (FileFilterClause *clausePtr = filterPtr->clauses; clausePtr;
		    clausePtr = clausePtr->next) {

		for (GlobPattern *globPtr = clausePtr->patterns; globPtr;
			globPtr = globPtr->next) {
		    const char *str = globPtr->pattern;
		    while (*str && (*str == '*' || *str == '.')) {
		    	str++;
		    }
		    if (*str) {
			NSString *extension = [[NSString alloc] initWithUTF8String:str];
			if (![filterInfo.allowedExtensions containsObject:extension]) {
			    [filterInfo.allowedExtensions addObject:extension];
			}

			[clauseextensions addObject:extension];
			[displayextensions addObject:[@"." stringByAppendingString:extension]];

			[extension release];
		    } else {
			/*
			 * It is the all pattern (*, .* or *.*)
			 */

			allowsAll = YES;
			filterInfo.allowedExtensionsAllowAll = YES;
			[displayextensions addObject:@"*"];
		    }
		}
	    }
	    [filterInfo.fileTypeExtensions addObject:clauseextensions];
	    [filterInfo.fileTypeAllowsAll addObject:[NSNumber numberWithBool:allowsAll]];

	    NSMutableString *label = [[NSMutableString alloc] initWithString:name];
	    [label appendString:@" ("];
	    [label appendString:[displayextensions componentsJoinedByString:@", "]];
	    [label appendString:@")"];
	    [filterInfo.fileTypeLabels addObject:label];
	    [label release];
	}

	/*
	 * Check if the typevariable exists and matches one of the names.
	 */


	filterInfo.preselectFilter = false;
	filterInfo.userHasSelectedFilter = false;
	if (typeVariablePtr) {
	    /*
	     * Extract the variable content as a NSString.
	     */

	    Tcl_Obj *selectedFileTypeObj = Tcl_ObjGetVar2(interp,
		    typeVariablePtr, NULL, TCL_GLOBAL_ONLY);

	    /*
	     * Check that the typevariable exists.
	     */

	    if (selectedFileTypeObj != NULL) {
		const char *selectedFileType =
			Tcl_GetString(selectedFileTypeObj);
		NSString *selectedFileTypeStr =
			[[NSString alloc] initWithUTF8String:selectedFileType];
		NSUInteger index =
			[filterInfo.fileTypeNames indexOfObject:selectedFileTypeStr];

		if (index != NSNotFound) {
		    filterInfo.fileTypeIndex = index;
		    filterInfo.preselectFilter = true;
		}
	    }
	}
................................................................................

    }

    TkFreeFileFilters(&fl);
    return TCL_OK;
}

static bool
filterCompatible(
    NSString *extension,
    int filterIndex)
{
    NSMutableArray *allowedExtensions =
	    [filterInfo.fileTypeExtensions objectAtIndex: filterIndex];

    /*
     * If this contains the all pattern, accept any extension.
     */

    if ([[filterInfo.fileTypeAllowsAll objectAtIndex:filterIndex] boolValue]) {
	return true;
    }

    return [allowedExtensions containsObject: extension];
}

 
/*
 *----------------------------------------------------------------------
 *
 * Tk_GetOpenFileObjCmd --
 *
 *	This procedure implements the "open file" dialog box for the Mac
................................................................................
	    break;
	}
    }

    if (title) {
	[openpanel setTitle:title];

	/*
	 * From OSX 10.11, the title string is silently ignored in the open
	 * panel.  Prepend the title to the message in this case.  NOTE should
	 * be conditional on OSX version, but -mmacosx-version-min does not
	 * revert this behaviour
	 */

	if (message) {
	    NSString *fullmessage =
		    [[NSString alloc] initWithFormat:@"%@\n%@", title, message];
	    [message release];
	    [title release];
	    message = fullmessage;
	} else {
	    message = title;
	}
    }
................................................................................
    [openpanel setAllowsMultipleSelection:multiple];

    if (parseFileFilters(interp, fileTypesPtr, typeVariablePtr) != TCL_OK) {
	goto end;
    }

    if (filterInfo.doFileTypes) {
	NSView *accessoryView = [[NSView alloc]
		initWithFrame:NSMakeRect(0.0, 0.0, 300, 32.0)];
	NSTextField *label = [[NSTextField alloc]
		initWithFrame:NSMakeRect(0, 0, 60, 22)];

	[label setEditable:NO];
	[label setStringValue:@"Filter:"];
	[label setBordered:NO];
	[label setBezeled:NO];
	[label setDrawsBackground:NO];

	NSPopUpButton *popupButton = [[NSPopUpButton alloc]
		initWithFrame:NSMakeRect(50.0, 2, 240, 22.0) pullsDown:NO];

	[popupButton addItemsWithTitles:filterInfo.fileTypeLabels];
	[popupButton setAction:@selector(selectFormat:)];

	[accessoryView addSubview:label];
	[accessoryView addSubview:popupButton];

	if (filterInfo.preselectFilter) {
	    /*
	     * A specific filter was selected from the typevariable. Select it
	     * and open the accessory view.
	     */

	    [popupButton selectItemAtIndex:filterInfo.fileTypeIndex];

	    /*
	     * On OSX > 10.11, the options are not visible by default. Ergo
	     * allow all file types
	    [openpanel setAllowedFileTypes:filterInfo.fileTypeExtensions[filterInfo.fileTypeIndex]];
	    */
	    [openpanel setAllowedFileTypes:filterInfo.allowedExtensions];
	} else {
	    [openpanel setAllowedFileTypes:filterInfo.allowedExtensions];
	}

................................................................................
	    [openpanel setAllowsOtherFileTypes:YES];
	} else {
	    [openpanel setAllowsOtherFileTypes:NO];
	}

	[openpanel setAccessoryView:accessoryView];
    } else {
	/*
	 * No filters are given. Allow picking all files.
	 */

	[openpanel setAllowsOtherFileTypes:YES];
    }

    if (cmdObj) {
	callbackInfo = ckalloc(sizeof(FilePanelCallbackInfo));
	if (Tcl_IsShared(cmdObj)) {
	    cmdObj = Tcl_DuplicateObj(cmdObj);
................................................................................

    callbackInfo->cmdObj = cmdObj;
    callbackInfo->interp = interp;
    callbackInfo->multiple = multiple;
    parent = TkMacOSXDrawableWindow(((TkWindow *) tkwin)->window);
    if (haveParentOption && parent && ![parent attachedSheet]) {
	parentIsKey = [parent isKeyWindow];
	if (directory || filename) {
	    NSURL *fileURL = getFileURL(directory, filename);

	    [openpanel setDirectoryURL:fileURL];
	}

	[openpanel beginSheetModalForWindow:parent
	       completionHandler:^(NSInteger returnCode) {
	    [NSApp tkFilePanelDidEnd:openpanel
		       returnCode:returnCode
		       contextInfo:callbackInfo ];
	}];
	modalReturnCode = cmdObj ? modalOther :
		[NSApp runModalForWindow:openpanel];
    } else {
	if (directory || filename) {
	    NSURL *fileURL = getFileURL(directory, filename);

	    [openpanel setDirectoryURL:fileURL];
	}

	modalReturnCode = [openpanel runModal];
	[NSApp tkFilePanelDidEnd:openpanel returnCode:modalReturnCode
		contextInfo:callbackInfo];
    }
    result = (modalReturnCode != modalError) ? TCL_OK : TCL_ERROR;
    if (parentIsKey) {
	[parent makeKeyWindow];
    }

    if ((typeVariablePtr && (modalReturnCode == NSOKButton))
	    && filterInfo.doFileTypes) {
	/*
	 * The -typevariable must be set to the selected file type, if the
	 * dialog was not cancelled.
	 */

	NSUInteger selectedFilterIndex = filterInfo.fileTypeIndex;
	NSString *selectedFilter = NULL;

	if (filterInfo.userHasSelectedFilter) {
	    selectedFilterIndex = filterInfo.fileTypeIndex;
	    selectedFilter = [filterInfo.fileTypeNames objectAtIndex:selectedFilterIndex];
	} else {
	    /*
	     * Difficult case: the user has not touched the filter settings,
	     * but we must return something in the typevariable. First check if
	     * the preselected type is compatible with the selected file,
	     * otherwise choose the first compatible type from the list,
	     * finally fall back to the empty string.
	     */

	    NSURL *selectedFile;

	    if (multiple) {
		/*
		 * Use the first file in the case of multiple selection.
		 * Anyway it is not overly useful here.
		 */
		selectedFile = [[openpanel URLs] objectAtIndex:0];
	    } else {
		selectedFile = [openpanel URL];
	    }

	    NSString *extension = [selectedFile pathExtension];

	    if (filterInfo.preselectFilter &&
		    filterCompatible(extension, filterInfo.fileTypeIndex)) {
		selectedFilterIndex = filterInfo.fileTypeIndex;  // The preselection from the typevariable
		selectedFilter = [filterInfo.fileTypeNames objectAtIndex:selectedFilterIndex];
	    } else {
		// scan the list
		NSUInteger i;

		for (i = 0; i < [filterInfo.fileTypeNames count]; i++) {
		    if (filterCompatible(extension, i)) {
			selectedFilterIndex = i;
			break;
		    }
		}
		if (i == selectedFilterIndex) {
		    selectedFilter = [filterInfo.fileTypeNames objectAtIndex:selectedFilterIndex];
		} else {
		    selectedFilter = @"";
		}

	    }
	}

	Tcl_ObjSetVar2(interp, typeVariablePtr, NULL,
		Tcl_NewStringObj([selectedFilter UTF8String], -1),
		TCL_GLOBAL_ONLY);
    }


  end:
    return result;
}

 
/*
 *----------------------------------------------------------------------
 *
 * Tk_GetSaveFileObjCmd --
 *
 *	This procedure implements the "save file" dialog box for the Mac
................................................................................
 *	platform. See the user documentation for details on what it does.
 *
 * Results:
 *	A standard Tcl result.
 *
 * Side effects:
 *	See user documentation.
 *
 *----------------------------------------------------------------------
 */

int
Tk_GetSaveFileObjCmd(
    ClientData clientData,	/* Main window associated with interpreter. */
    Tcl_Interp *interp,		/* Current interpreter. */
................................................................................
    int index, len;
    Tcl_Obj *cmdObj = NULL, *typeVariablePtr = NULL, *fileTypesPtr = NULL;
    FilePanelCallbackInfo callbackInfoStruct;
    FilePanelCallbackInfo *callbackInfo = &callbackInfoStruct;
    NSString *directory = nil, *filename = nil, *defaultType = nil;
    NSString *message = nil, *title = nil;
    NSWindow *parent;
    savepanel = [NSSavePanel savePanel];
    NSInteger modalReturnCode = modalError;
    BOOL parentIsKey = NO;

    for (i = 1; i < objc; i += 2) {
	if (Tcl_GetIndexFromObjStruct(interp, objv[i], saveOptionStrings,
		sizeof(char *), "option", TCL_EXACT, &index) != TCL_OK) {
	    goto end;
................................................................................
		break;
	}
    }

    if (title) {
	[savepanel setTitle:title];

	/*
	 * From OSX 10.11, the title string is silently ignored, if the save
	 * panel is a sheet.  Prepend the title to the message in this case.
	 * NOTE: should be conditional on OSX version, but -mmacosx-version-min
	 * does not revert this behaviour.
	 */

	if (haveParentOption) {
	    if (message) {
		NSString *fullmessage =
		    [[NSString alloc] initWithFormat:@"%@\n%@",title,message];
		[message release];
		[title release];
		message = fullmessage;
	    } else {
		message = title;
	    }
	}
................................................................................
    }

    if (parseFileFilters(interp, fileTypesPtr, typeVariablePtr) != TCL_OK) {
	goto end;
    }

    if (filterInfo.doFileTypes) {
	NSView *accessoryView = [[NSView alloc]
		initWithFrame:NSMakeRect(0.0, 0.0, 300, 32.0)];
	NSTextField *label = [[NSTextField alloc]
		initWithFrame:NSMakeRect(0, 0, 60, 22)];

	[label setEditable:NO];
	[label setStringValue:NSLocalizedString(@"Format:", nil)];
	[label setBordered:NO];
	[label setBezeled:NO];
	[label setDrawsBackground:NO];

	NSPopUpButton *popupButton = [[NSPopUpButton alloc]
		initWithFrame:NSMakeRect(50.0, 2, 340, 22.0) pullsDown:NO];

	[popupButton addItemsWithTitles:filterInfo.fileTypeLabels];
	[popupButton selectItemAtIndex:filterInfo.fileTypeIndex];
	[popupButton setAction:@selector(saveFormat:)];

	[accessoryView addSubview:label];
	[accessoryView addSubview:popupButton];

	[savepanel setAccessoryView:accessoryView];

	[savepanel setAllowedFileTypes:[filterInfo.fileTypeExtensions objectAtIndex:filterInfo.fileTypeIndex]];
	[savepanel setAllowsOtherFileTypes:filterInfo.allowedExtensionsAllowAll];
    } else if (defaultType) {
	/*
	 * If no filetypes are given, defaultextension is an alternative way to
	 * specify the attached extension. Just propose this extension, but
	 * don't display an accessory view.
	 */

	NSMutableArray *AllowedFileTypes = [NSMutableArray array];

	[AllowedFileTypes addObject:defaultType];
	[savepanel setAllowedFileTypes:AllowedFileTypes];
	[savepanel setAllowsOtherFileTypes:YES];
    }

    [savepanel setCanSelectHiddenExtension:YES];
    [savepanel setExtensionHidden:NO];
................................................................................
    }
    callbackInfo->cmdObj = cmdObj;
    callbackInfo->interp = interp;
    callbackInfo->multiple = 0;

    parent = TkMacOSXDrawableWindow(((TkWindow *) tkwin)->window);
    if (haveParentOption && parent && ![parent attachedSheet]) {
	parentIsKey = [parent isKeyWindow];
	if (directory) {
	    [savepanel setDirectoryURL:[NSURL fileURLWithPath:directory isDirectory:YES]];
	}

	/*
	 * Check for file name, otherwise set to empty string; crashes with
	 * uncaught exception if set to nil.
	 */

	if (filename) {
	    [savepanel setNameFieldStringValue:filename];
	} else {
	    [savepanel setNameFieldStringValue:@""];
	}
	[savepanel beginSheetModalForWindow:parent
		completionHandler:^(NSInteger returnCode) {
	    [NSApp tkFilePanelDidEnd:savepanel
		       returnCode:returnCode
		       contextInfo:callbackInfo];
	}];
	modalReturnCode = cmdObj ? modalOther :
		[NSApp runModalForWindow:savepanel];
    } else {
	if (directory) {
	    [savepanel setDirectoryURL:[NSURL fileURLWithPath:directory isDirectory:YES]];
	}

	/*
	 * Check for file name, otherwise set to empty string; crashes with
	 * uncaught exception if set to nil.
	 */

	if (filename) {
	    [savepanel setNameFieldStringValue:filename];
	} else {
	    [savepanel setNameFieldStringValue:@""];
	}
	modalReturnCode = [savepanel runModal];
	[NSApp tkFilePanelDidEnd:savepanel returnCode:modalReturnCode
................................................................................
		contextInfo:callbackInfo];
    }
    result = (modalReturnCode != modalError) ? TCL_OK : TCL_ERROR;
    if (parentIsKey) {
	[parent makeKeyWindow];
    }

    if (typeVariablePtr && (modalReturnCode == NSOKButton)
	    && filterInfo.doFileTypes) {
	/*
	 * The -typevariable must be set to the selected file type, if the
	 * dialog was not cancelled.
	 */

	NSString *selectedFilter =
	    [filterInfo.fileTypeNames objectAtIndex:filterInfo.fileTypeIndex];
	Tcl_ObjSetVar2(interp, typeVariablePtr, NULL,
		Tcl_NewStringObj([selectedFilter UTF8String], -1),
		TCL_GLOBAL_ONLY);
    }


  end:
    return result;
}
 
/*
 *----------------------------------------------------------------------
................................................................................
	    cmdObj = Tcl_DuplicateObj(cmdObj);
	}
	Tcl_IncrRefCount(cmdObj);
    }
    callbackInfo->cmdObj = cmdObj;
    callbackInfo->interp = interp;
    callbackInfo->multiple = 0;

    /*
     * Check for directory value, set to root if not specified; otherwise
     * crashes with exception because of nil string parameter.
     */

    if (!directory) {
	directory = @"/";
    }
    parent = TkMacOSXDrawableWindow(((TkWindow *) tkwin)->window);
    if (haveParentOption && parent && ![parent attachedSheet]) {
	parentIsKey = [parent isKeyWindow];
	[panel setDirectoryURL:[NSURL fileURLWithPath:directory isDirectory:YES]];
	[panel beginSheetModalForWindow:parent
		completionHandler:^(NSInteger returnCode) {
	    [NSApp tkFilePanelDidEnd:panel
		    returnCode:returnCode
		    contextInfo:callbackInfo];
	}];
	modalReturnCode = cmdObj ? modalOther : [NSApp runModalForWindow:panel];
    } else {
	[panel setDirectoryURL:[NSURL fileURLWithPath:directory isDirectory:YES]];
	modalReturnCode = [panel runModal];
	[NSApp tkFilePanelDidEnd:panel returnCode:modalReturnCode
		contextInfo:callbackInfo];
    }
................................................................................

    /*
     * This replaces the old about dialog with a standard alert that displays
     * correctly on 10.14.
     */

    NSString *version =  @"Tcl " TCL_PATCH_LEVEL " & Tk " TCL_PATCH_LEVEL;
    NSString *url = @"www.tcl-lang.org";
    NSTextView *credits = [[NSTextView alloc] initWithFrame:NSMakeRect(0,0,300,300)];
    NSFont *font = [NSFont systemFontOfSize:[NSFont systemFontSize]];
    NSDictionary *textAttributes = [NSDictionary dictionaryWithObject:font
					        forKey:NSFontAttributeName];

    [credits insertText: [[NSAttributedString alloc]
		 initWithString:[NSString stringWithFormat: @"\n"
		"Tcl and Tk are distributed under a modified BSD license: "
		"www.tcl.tk/software/tcltk/license.html\n\n"
		"%1$C 1987-%[email protected] Tcl Core Team and Contributers.\n\n"
		"%1$C 2011-%[email protected] Kevin Walzer/WordTech Communications LLC.\n\n"
		"%1$C 2014-%[email protected] Marc Culler.\n\n"
		"%1$C 2002-2012 Daniel A. Steffen.\n\n"
		"%1$C 2001-2009 Apple Inc.\n\n"
		"%1$C 2001-2002 Jim Ingham & Ian Reid\n\n"
		"%1$C 1998-2000 Jim Ingham & Ray Johnson\n\n"
		"%1$C 1998-2000 Scriptics Inc.\n\n"
		"%1$C 1996-1997 Sun Microsystems Inc.", 0xA9, year]
	    attributes:textAttributes]
            replacementRange:NSMakeRange(0,0)];
    [credits setDrawsBackground:NO];
    [credits setEditable:NO];

    NSAlert *about = [[NSAlert alloc] init];

    [[about window] setTitle:@"About Tcl & Tk"];
    [about setMessageText: version];
    [about setInformativeText:url];
    about.accessoryView = credits;
    [about runModal];
    [about release];
}
................................................................................
    if (indexDefaultOption) {
	/*
	 * Any '-default' option needs to know the '-type' option, which is
	 * why we do this here.
	 */

	if (Tcl_GetIndexFromObjStruct(interp, objv[indexDefaultOption + 1],
		alertButtonStrings, sizeof(char *), "-default value",
		TCL_EXACT, &index) != TCL_OK) {
	    goto end;
	}

	/*
	 * Need to map from "ok" etc. to 1, 2, 3, right to left.
	 */

................................................................................
	    goto end;
	}
    }
    [alert setIcon:[NSApp applicationIconImage]];
    [alert setAlertStyle:alertStyles[iconIndex]];
    i = 0;
    while (i < 3 && alertButtonNames[typeIndex][i]) {
	[alert addButtonWithTitle:(NSString*) alertButtonNames[typeIndex][i++]];
    }
    buttons = [alert buttons];
    for (NSButton *b in buttons) {
	NSString *ke = [b keyEquivalent];

	if (([ke isEqualToString:@"\r"] || [ke isEqualToString:@"\033"]) &&
		![b keyEquivalentModifierMask]) {
................................................................................
    callbackInfo->interp = interp;
    callbackInfo->typeIndex = typeIndex;
    parent = TkMacOSXDrawableWindow(((TkWindow *) tkwin)->window);
    if (haveParentOption && parent && ![parent attachedSheet]) {
	parentIsKey = [parent isKeyWindow];
#if MAC_OS_X_VERSION_MIN_REQUIRED > 1090
 	[alert beginSheetModalForWindow:parent
	       completionHandler:^(NSModalResponse returnCode) {
	    [NSApp tkAlertDidEnd:alert
		    returnCode:returnCode
		    contextInfo:callbackInfo];
	}];
#else
	[alert beginSheetModalForWindow:parent
	       modalDelegate:NSApp
	       didEndSelector:@selector(tkAlertDidEnd:returnCode:contextInfo:)
	       contextInfo:callbackInfo];
#endif
	modalReturnCode = cmdObj ? 0 :
................................................................................

typedef struct FontchooserData {
    Tcl_Obj *titleObj;
    Tcl_Obj *cmdObj;
    Tk_Window parent;
} FontchooserData;

enum FontchooserEvent {
    FontchooserClosed,
    FontchooserSelection
};

static void		FontchooserEvent(int kind);
static Tcl_Obj *	FontchooserCget(FontchooserData *fcdPtr,
			    int optionIndex);
static int		FontchooserConfigureCmd(ClientData clientData,
			    Tcl_Interp *interp, int objc,
			    Tcl_Obj *const objv[]);
................................................................................
@end
 
/*
 *----------------------------------------------------------------------
 *
 * FontchooserEvent --
 *
 *	This processes events generated by user interaction with the font
 *	panel.
 *
 * Results:
 *	None.
 *
 * Side effects:
 *	Additional events may be place on the Tk event queue.
 *
................................................................................
}
 
/*
 *----------------------------------------------------------------------
 *
 * FontchooserCget --
 *
 *	Helper for the FontchooserConfigure command to return the current value
 *	of any of the options (which may be NULL in the structure).

 *
 * Results:
 *	Tcl object of option value.
 *
 * Side effects:
 *	None.
 *
................................................................................
}
 
/*
 * ----------------------------------------------------------------------
 *
 * FontchooserConfigureCmd --
 *
 *	Implementation of the 'tk fontchooser configure' ensemble command.  See
 *	the user documentation for what it does.
 *
 * Results:
 *	See the user documentation.
 *
 * Side effects:
 *	Per-interp data structure may be modified
 *
................................................................................
	    NSFontPanel *fp = [fm fontPanel:NO];

	    [fp setPanelFont:fontPanelFont isMultiple:NO];
	    [fm setSelectedFont:fontPanelFont isMultiple:NO];
	    [fm setSelectedAttributes:fontPanelFontAttributes
		    isMultiple:NO];
	    if ([fp isVisible]) {
		TkSendVirtualEvent(fcdPtr->parent,
			"TkFontchooserFontChanged", NULL);
	    }
	    break;
	case FontchooserCmd:
	    if (fcdPtr->cmdObj) {
		Tcl_DecrRefCount(fcdPtr->cmdObj);
	    }
	    Tcl_GetStringFromObj(objv[i+1], &len);
................................................................................
}
 
/*
 * ----------------------------------------------------------------------
 *
 * FontchooserShowCmd --
 *
 *	Implements the 'tk fontchooser show' ensemble command. The per-interp
 *	configuration data for the dialog is held in an interp associated
 *	structure.
 *
 * Results:
 *	See the user documentation.
 *
 * Side effects:
 *	Font Panel may be shown.
 *
................................................................................
	    NULL);

    if (fcdPtr->parent == None) {
	fcdPtr->parent = (Tk_Window) clientData;
	Tk_CreateEventHandler(fcdPtr->parent, StructureNotifyMask,
		FontchooserParentEventHandler, fcdPtr);
    }

    NSFontManager *fm = [NSFontManager sharedFontManager];
    NSFontPanel *fp = [fm fontPanel:YES];

    if ([fp delegate] != NSApp) {
	[fp setDelegate:NSApp];
    }
    if (![fp isVisible]) {
	[fm orderFrontFontPanel:NSApp];
	TkSendVirtualEvent(fcdPtr->parent, "TkFontchooserVisibility", NULL);
    }
................................................................................
}
 
/*
 * ----------------------------------------------------------------------
 *
 * FontchooserHideCmd --
 *
 *	Implementation of the 'tk fontchooser hide' ensemble. See the user
 *	documentation for details.
 *
 * Results:
 *	See the user documentation.
 *
 * Side effects:
 *	Font Panel may be hidden.
 *
................................................................................
FontchooserHideCmd(
    ClientData clientData,	/* Main window */
    Tcl_Interp *interp,
    int objc,
    Tcl_Obj *const objv[])
{
    NSFontPanel *fp = [[NSFontManager sharedFontManager] fontPanel:NO];

    if ([fp isVisible]) {
	[fp orderOut:NSApp];
    }
    return TCL_OK;
}
 
/*
................................................................................
}
 
/*
 * ----------------------------------------------------------------------
 *
 * TkInitFontchooser --
 *
 *	Associate the font chooser configuration data with the Tcl interpreter.
 *	There is one font chooser per interp.
 *
 * Results:
 *	None.
 *
 * Side effects:
 *	per-interp configuration data is destroyed.
 *

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/*
 * tkMacOSXDraw.c --
 *
 *	This file contains functions that perform drawing to
 *	Xlib windows. Most of the functions simple emulate
 *	Xlib functions.
 *
 * Copyright (c) 1995-1997 Sun Microsystems, Inc.
 * Copyright 2001-2009, Apple Inc.
 * Copyright (c) 2006-2009 Daniel A. Steffen <[email protected]>
 * Copyright 2014 Marc Culler.
 *
 * See the file "license.terms" for information on usage and redistribution
................................................................................
/*
#ifdef TK_MAC_DEBUG
#define TK_MAC_DEBUG_DRAWING
#define TK_MAC_DEBUG_IMAGE_DRAWING
#endif
*/

#define radians(d) ((d) * (M_PI/180.0))

/*
 * Non-antialiased CG drawing looks better and more like X11 drawing when using
 * very fine lines, so decrease all linewidths by the following constant.
 */
#define NON_AA_CG_OFFSET .999

static int cgAntiAliasLimit = 0;
#define notAA(w) ((w) < cgAntiAliasLimit)

static int useThemedToplevel = 0;
static int useThemedFrame = 0;

/*
 * Prototypes for functions used only in this file.
 */
................................................................................
 *      implementation does not work correctly.  Originally it relied on
 *      [NSBitmapImageRep initWithFocusedViewRect:view_rect] which was
 *      deprecated by Apple in OSX 10.14 and also required the use of other
 *      deprecated functions such as [NSView lockFocus]. Apple's suggested
 *      replacement is [NSView cacheDisplayInRect: toBitmapImageRep:] and that
 *      is what is being used here.  However, that method only works when the
 *      view has a valid CGContext, and a view is only guaranteed to have a
 *      valid context during a call to [NSView drawRect].  To further
 *      complicate matters, cacheDisplayInRect calls [NSView drawRect].
 *      Essentially it is asking the view to draw a subrectangle of itself into
 *      a special graphics context which is linked to the BitmapImageRep.  But
 *      our implementation of [NSView drawRect] does not allow recursive calls.
 *      If called recursively it returns immediately without doing any drawing.
 *      So the bottom line is that this function either returns a NULL pointer
 *      or a black image.  To make it useful would require a significant amount
 *      of rewriting of the drawRect method.  Perhaps the next release of OSX
 *      will include some more helpful ways of doing this.
 *
 * Results:
 *	Returns an NSBitmapRep representing the image of the given
 *      rectangle of the given drawable.  This object is retained.
 *      The caller is responsible for releasing it.
 *
 *      NOTE: The x,y coordinates should be relative to a coordinate system with
 *      origin at the top left, as used by XImage and CGImage, not bottom
 *      left as used by NSView.
 *
 * Side effects:
 *     None
 *
 *----------------------------------------------------------------------
 */

NSBitmapImageRep*
TkMacOSXBitmapRepFromDrawableRect(
        Drawable drawable,
	int x,
	int y,
	unsigned int width,
	unsigned int height)
{
    MacDrawable *mac_drawable = (MacDrawable *) drawable;
    CGContextRef cg_context = NULL;
    CGImageRef cg_image=NULL, sub_cg_image = NULL;
    NSBitmapImageRep *bitmap_rep = NULL;
    NSView *view=NULL;
    if ( mac_drawable->flags & TK_IS_PIXMAP ) {

	/*
	 * This MacDrawable is a bitmap, so its view is NULL.
	 */

	cg_context = TkMacOSXGetCGContextForDrawable(drawable);
	CGRect image_rect = CGRectMake(x, y, width, height);


	cg_image = CGBitmapContextCreateImage( (CGContextRef) cg_context);
	sub_cg_image = CGImageCreateWithImageInRect(cg_image, image_rect);
	if ( sub_cg_image ) {
	    bitmap_rep = [NSBitmapImageRep alloc];
	    [bitmap_rep initWithCGImage:sub_cg_image];
	}
	if ( cg_image ) {
	    CGImageRelease(cg_image);
	}
    } else if ( (view = TkMacOSXDrawableView(mac_drawable)) ) {

	/*
	 * Convert Tk top-left to NSView bottom-left coordinates.
	 */

	int view_height = [view bounds].size.height;
	NSRect view_rect = NSMakeRect(x + mac_drawable->xOff,
			       view_height - height - y - mac_drawable->yOff,
			       width, height);

	/*
	 * Attempt to copy from the view to a bitmapImageRep.  If the view does
	 * not have a valid CGContext, doing this will silently corrupt memory
	 * and make a big mess. So, in that case, we mark the view as needing
	 * display and return NULL.
	 */
................................................................................
 *
 *	Copies data from one drawable to another.
 *
 * Results:
 *	None.
 *
 * Side effects:
 *	Data is moved from a window or bitmap to a second window or
 *	bitmap.
 *
 *----------------------------------------------------------------------
 */

void
XCopyArea(
    Display *display,		/* Display. */
    Drawable src,		/* Source drawable. */
    Drawable dst,		/* Destination drawable. */
    GC gc,				/* GC to use. */
    int src_x,			/* X & Y, width & height */
    int src_y,			/* define the source rectangle */
    unsigned int width,	/* that will be copied. */
    unsigned int height,
    int dest_x,			/* Dest X & Y on dest rect. */
    int dest_y)
{
    TkMacOSXDrawingContext dc;
    MacDrawable *srcDraw = (MacDrawable *) src;
    NSBitmapImageRep *bitmap_rep = NULL;
................................................................................

    display->request++;
    if (!width || !height) {
	return;
    }

    if (!TkMacOSXSetupDrawingContext(dst, gc, 1, &dc)) {
	return;
	TkMacOSXDbgMsg("Failed to setup drawing context.");

    }

    if ( dc.context ) {




	if (srcDraw->flags & TK_IS_PIXMAP) {
	    img = TkMacOSXCreateCGImageWithDrawable(src);
	}else if (TkMacOSXDrawableWindow(src)) {
	    bitmap_rep =  TkMacOSXBitmapRepFromDrawableRect(src,
				   src_x, src_y, width, height);
	    if ( bitmap_rep ) {
		img = [bitmap_rep CGImage];
	    }
	} else {
	    TkMacOSXDbgMsg("Invalid source drawable - neither window nor pixmap.");
	}

	if (img) {
	    bounds = CGRectMake(0, 0, srcDraw->size.width, srcDraw->size.height);
	    srcRect = CGRectMake(src_x, src_y, width, height);
	    dstRect = CGRectMake(dest_x, dest_y, width, height);
	    TkMacOSXDrawCGImage(dst, gc, dc.context, img,
		     gc->foreground, gc->background, bounds, srcRect, dstRect);
	    CFRelease(img);
	} else {
	    TkMacOSXDbgMsg("Failed to construct CGImage.");
	}

    } else {
	TkMacOSXDbgMsg("Invalid destination drawable - no context.");
	return;
    }

    TkMacOSXRestoreDrawingContext(&dc);
}
 
/*
 *----------------------------------------------------------------------
 *
 * XCopyPlane --
 *
 *	Copies a bitmap from a source drawable to a destination
 *	drawable. The plane argument specifies which bit plane of
 *	the source contains the bitmap. Note that this implementation
 *	ignores the gc->function.
 *
 * Results:
 *	None.
 *
 * Side effects:
 *	Changes the destination drawable.
 *
................................................................................
    if (plane != 1) {
	Tcl_Panic("Unexpected plane specified for XCopyPlane");
    }
    if (srcDraw->flags & TK_IS_PIXMAP) {
	if (!TkMacOSXSetupDrawingContext(dst, gc, 1, &dc)) {
	    return;
	}

	CGContextRef context = dc.context;

	if (context) {
	    CGImageRef img = TkMacOSXCreateCGImageWithDrawable(src);

	    if (img) {
		TkpClipMask *clipPtr = (TkpClipMask *) gc->clip_mask;
		unsigned long imageBackground  = gc->background;

                if (clipPtr && clipPtr->type == TKP_CLIP_PIXMAP){
		    srcRect = CGRectMake(src_x, src_y, width, height);
		    CGImageRef mask = TkMacOSXCreateCGImageWithDrawable(clipPtr->value.pixmap);

		    CGImageRef submask = CGImageCreateWithImageInRect(img, srcRect);

		    CGRect rect = CGRectMake(dest_x, dest_y, width, height);

		    rect = CGRectOffset(rect, dstDraw->xOff, dstDraw->yOff);
		    CGContextSaveGState(context);


		    /* Move the origin of the destination to top left. */



		    CGContextTranslateCTM(context, 0, rect.origin.y + CGRectGetMaxY(rect));
		    CGContextScaleCTM(context, 1, -1);


		    /* Fill with the background color, clipping to the mask. */


		    CGContextClipToMask(context, rect, submask);
		    TkMacOSXSetColorInContext(gc, gc->background, dc.context);
		    CGContextFillRect(context, rect);


		    /* Fill with the foreground color, clipping to the
		       intersection of img and mask. */


		    CGImageRef subimage = CGImageCreateWithImageInRect(img, srcRect);

		    CGContextClipToMask(context, rect, subimage);
		    TkMacOSXSetColorInContext(gc, gc->foreground, context);
		    CGContextFillRect(context, rect);
		    CGContextRestoreGState(context);
		    CGImageRelease(img);
		    CGImageRelease(mask);
		    CGImageRelease(submask);
		    CGImageRelease(subimage);
		} else {

		    bounds = CGRectMake(0, 0, srcDraw->size.width, srcDraw->size.height);
		    srcRect = CGRectMake(src_x, src_y, width, height);
		    dstRect = CGRectMake(dest_x, dest_y, width, height);
		    TkMacOSXDrawCGImage(dst, gc, dc.context, img, gc->foreground,

					imageBackground, bounds, srcRect, dstRect);
		    CGImageRelease(img);
		}

	    } else { /* no image */
		TkMacOSXDbgMsg("Invalid source drawable");
	    }
	} else {
	    TkMacOSXDbgMsg("Invalid destination drawable - could not get a bitmap context.");

	}
	TkMacOSXRestoreDrawingContext(&dc);


    } else { /* source drawable is a window, not a Pixmap */


	XCopyArea(display, src, dst, gc, src_x, src_y, width, height, dest_x, dest_y);

    }
}
 
/*
 *----------------------------------------------------------------------
 *
 * TkMacOSXCreateCGImageWithDrawable --
................................................................................
 *
 * Side effects:
 *	None.
 *
 *----------------------------------------------------------------------
 */

static NSImage*
CreateNSImageWithPixmap(
    Pixmap pixmap,
    int width,
    int height)
{
    CGImageRef cgImage;
    NSImage *nsImage;
................................................................................
 *
 * Side effects:
 *	None.
 *
 *----------------------------------------------------------------------
 */

NSImage*
TkMacOSXGetNSImageWithTkImage(
    Display *display,
    Tk_Image image,
    int width,
    int height)
{
    Pixmap pixmap = Tk_GetPixmap(display, None, width, height, 0);
................................................................................
 *
 * Side effects:
 *	None.
 *
 *----------------------------------------------------------------------
 */

NSImage*
TkMacOSXGetNSImageWithBitmap(
    Display *display,
    Pixmap bitmap,
    GC gc,
    int width,
    int height)
{
................................................................................

    if (macDraw && (macDraw->flags & TK_IS_PIXMAP) && !macDraw->context) {
	const size_t bitsPerComponent = 8;
	size_t bitsPerPixel, bytesPerRow, len;
	CGColorSpaceRef colorspace = NULL;
	CGBitmapInfo bitmapInfo =
#ifdef __LITTLE_ENDIAN__
	kCGBitmapByteOrder32Host;
#else
	kCGBitmapByteOrderDefault;
#endif
	char *data;

	CGRect bounds = CGRectMake(0, 0, macDraw->size.width, macDraw->size.height);

	if (macDraw->flags & TK_IS_BW_PIXMAP) {
	    bitsPerPixel = 8;
	    bitmapInfo = (CGBitmapInfo)kCGImageAlphaOnly;
	} else {
	    colorspace = CGColorSpaceCreateDeviceRGB();
	    bitsPerPixel = 32;
	    bitmapInfo |= kCGImageAlphaPremultipliedFirst;
	}
	bytesPerRow = ((size_t) macDraw->size.width * bitsPerPixel + 127) >> 3
		& ~15;
	len = macDraw->size.height * bytesPerRow;
	data = ckalloc(len);
	bzero(data, len);
	macDraw->context = CGBitmapContextCreate(data, macDraw->size.width,
		macDraw->size.height, bitsPerComponent, bytesPerRow,
		colorspace, bitmapInfo);
	if (macDraw->context) {
................................................................................
	    if (subImage) {
		image = subImage;
	    }
	}
	dstBounds = CGRectOffset(dstBounds, macDraw->xOff, macDraw->yOff);
	if (CGImageIsMask(image)) {
	    if (macDraw->flags & TK_IS_BW_PIXMAP) {


		/* Set fill color to black; background comes from the context,
		 * or is transparent.
		 */

		if (imageBackground != TRANSPARENT_PIXEL << 24) {
		    CGContextClearRect(context, dstBounds);
		}
		CGContextSetRGBFillColor(context, 0.0, 0.0, 0.0, 1.0);
................................................................................
#ifdef TK_MAC_DEBUG_IMAGE_DRAWING
	CGContextSaveGState(context);
	CGContextSetLineWidth(context, 1.0);
	CGContextSetRGBStrokeColor(context, 0, 0, 0, 0.1);
	CGContextSetRGBFillColor(context, 0, 1, 0, 0.1);
	CGContextFillRect(context, dstBounds);
	CGContextStrokeRect(context, dstBounds);

	CGPoint p[4] = {dstBounds.origin,
	    CGPointMake(CGRectGetMaxX(dstBounds), CGRectGetMaxY(dstBounds)),
	    CGPointMake(CGRectGetMinX(dstBounds), CGRectGetMaxY(dstBounds)),
	    CGPointMake(CGRectGetMaxX(dstBounds), CGRectGetMinY(dstBounds))
	};

	CGContextStrokeLineSegments(context, p, 4);
	CGContextRestoreGState(context);
	TkMacOSXDbgMsg("Drawing CGImage at (x=%f, y=%f), (w=%f, h=%f)",
		dstBounds.origin.x, dstBounds.origin.y,
		dstBounds.size.width, dstBounds.size.height);
#else /* TK_MAC_DEBUG_IMAGE_DRAWING */
	CGContextSaveGState(context);
................................................................................
			macWin->yOff + points[i].y + o);
	    } else {
		prevx += points[i].x;
		prevy += points[i].y;
		CGContextAddLineToPoint(dc.context, prevx, prevy);
	    }
	}

        /*
         * In the case of closed polylines, the first and last points
         * are the same. We want miter or bevel join be rendered also
         * at this point, this needs telling CoreGraphics that the
         * path is closed.
         */

        if ((points[0].x == points[npoints-1].x) &&
                (points[0].y == points[npoints-1].y)) {
            CGContextClosePath(dc.context);
        }
	CGContextStrokePath(dc.context);
    }
    TkMacOSXRestoreDrawingContext(&dc);
................................................................................
 *	Draws a filled polygon on the specified drawable.
 *
 *----------------------------------------------------------------------
 */

void
XFillPolygon(
    Display* display,		/* Display. */
    Drawable d,			/* Draw on this. */
    GC gc,			/* Use this GC. */
    XPoint* points,		/* Array of points. */
    int npoints,		/* Number of points. */
    int shape,			/* Shape to draw. */
    int mode)			/* Drawing mode. */
{
    MacDrawable *macWin = (MacDrawable *) d;
    TkMacOSXDrawingContext dc;
    int i;
................................................................................
	return;
    }
    if (dc.context) {
	CGRect rect;
	double o = (lw % 2) ? .5 : 0;

	rect = CGRectMake(
		macWin->xOff + x + o,
		macWin->yOff + y + o,
		width, height);
	CGContextStrokeRect(dc.context, rect);
    }
    TkMacOSXRestoreDrawingContext(&dc);
}
 
#ifdef TK_MACOSXDRAW_UNUSED
/*
 *----------------------------------------------------------------------
 *
 * XDrawRectangles --
 *
 *	Draws the outlines of the specified rectangles as if a
 *	five-point PolyLine protocol request were specified for each
 *	rectangle:
 *
 *	    [x,y] [x+width,y] [x+width,y+height] [x,y+height] [x,y]
 *
 *	For the specified rectangles, these functions do not draw a
 *	pixel more than once. XDrawRectangles draws the rectangles in
 *	the order listed in the array. If rectangles intersect, the
 *	intersecting pixels are drawn multiple times. Draws a
 *	rectangle.
 *
 * Results:
 *	None.
 *
 * Side effects:
 *	Draws rectangles on the specified drawable.
 *
................................................................................
 *	Draws onto the specified drawable.
 *
 *----------------------------------------------------------------------
 */

int
XFillRectangles(
    Display* display,		/* Display. */
    Drawable d,			/* Draw on this. */
    GC gc,			/* Use this GC. */
    XRectangle *rectangles,	/* Rectangle array. */
    int n_rectangles)		/* Number of rectangles. */
{
    MacDrawable *macWin = (MacDrawable *) d;
    TkMacOSXDrawingContext dc;
................................................................................
    TkMacOSXRestoreDrawingContext(&dc);
    return Success;
}
 
/*
 *----------------------------------------------------------------------
 *
















































 * XDrawArc --
 *
 *	Draw an arc.
 *
 * Results:
 *	None.
 *
................................................................................
 *	Draws an arc on the specified drawable.
 *
 *----------------------------------------------------------------------
 */

void
XDrawArc(
    Display* display,		/* Display. */
    Drawable d,			/* Draw on this. */
    GC gc,			/* Use this GC. */
    int x, int y,		/* Upper left of bounding rect. */
    unsigned int width,		/* Width & height. */
    unsigned int height,
    int angle1,			/* Staring angle of arc. */
    int angle2)			/* Extent of arc. */
................................................................................
 
#ifdef TK_MACOSXDRAW_UNUSED
/*
 *----------------------------------------------------------------------
 *
 * XDrawArcs --
 *
 *	Draws multiple circular or elliptical arcs. Each arc is
 *	specified by a rectangle and two angles. The center of the
 *	circle or ellipse is the center of the rect- angle, and the
 *	major and minor axes are specified by the width and height.
 *	Positive angles indicate counterclock- wise motion, and
 *	negative angles indicate clockwise motion. If the magnitude
 *	of angle2 is greater than 360 degrees, XDrawArcs truncates it
 *	to 360 degrees.
 *
 * Results:
 *	None.
 *
 * Side effects:
 *	Draws an arc for each array element on the specified drawable.
 *
................................................................................
XDrawArcs(
    Display *display,
    Drawable d,
    GC gc,
    XArc *arcArr,
    int nArcs)
{

    MacDrawable *macWin = (MacDrawable *) d;
    TkMacOSXDrawingContext dc;
    XArc *arcPtr;
    int i, lw = gc->line_width;

    display->request++;
    if (!TkMacOSXSetupDrawingContext(d, gc, 1, &dc)) {
................................................................................
 *	Draws a filled arc on the specified drawable.
 *
 *----------------------------------------------------------------------
 */

void
XFillArc(
    Display* display,		/* Display. */
    Drawable d,			/* Draw on this. */
    GC gc,			/* Use this GC. */
    int x, int y,		/* Upper left of bounding rect. */
    unsigned int width,		/* Width & height. */
    unsigned int height,
    int angle1,			/* Staring angle of arc. */
    int angle2)			/* Extent of arc. */
................................................................................
#endif
 
/*
 *----------------------------------------------------------------------
 *
 * TkScrollWindow --
 *
 *	Scroll a rectangle of the specified window and accumulate
 *	a damage region.
 *
 * Results:
 *	Returns 0 if the scroll generated no additional damage.
 *	Otherwise, sets the region that needs to be repainted after
 *	scrolling and returns 1.
 *
 * Side effects:
 *	Scrolls the bits in the window.
 *
 *----------------------------------------------------------------------
 */

................................................................................
    int x, int y,		/* Position rectangle to be scrolled. */
    int width, int height,
    int dx, int dy,		/* Distance rectangle should be moved. */
    TkRegion damageRgn)		/* Region to accumulate damage in. */
{
    Drawable drawable = Tk_WindowId(tkwin);
    MacDrawable *macDraw = (MacDrawable *) drawable;
    TKContentView *view = (TKContentView *)TkMacOSXDrawableView(macDraw);
    CGRect srcRect, dstRect;
    HIShapeRef dmgRgn = NULL, extraRgn = NULL;
    NSRect bounds, visRect, scrollSrc, scrollDst;
    int result = 0;

    if ( view ) {

  	/*  Get the scroll area in NSView coordinates (origin at bottom left). */


  	bounds = [view bounds];
 	scrollSrc = NSMakeRect(macDraw->xOff + x,
			       bounds.size.height - height - (macDraw->yOff + y),
			       width, height);
 	scrollDst = NSOffsetRect(scrollSrc, dx, -dy);


  	/* Limit scrolling to the window content area. */


 	visRect = [view visibleRect];
 	scrollSrc = NSIntersectionRect(scrollSrc, visRect);
 	scrollDst = NSIntersectionRect(scrollDst, visRect);
 	if ( !NSIsEmptyRect(scrollSrc) && !NSIsEmptyRect(scrollDst) ) {
  	    /*
  	     * Mark the difference between source and destination as damaged.
	     * This region is described in NSView coordinates (y=0 at the bottom)
	     * and converted to Tk coordinates later.
  	     */

	    srcRect = CGRectMake(x, y, width, height);
	    dstRect = CGRectOffset(srcRect, dx, dy);


	    /* Compute the damage. */


  	    dmgRgn = HIShapeCreateMutableWithRect(&srcRect);
 	    extraRgn = HIShapeCreateWithRect(&dstRect);
 	    ChkErr(HIShapeDifference, dmgRgn, extraRgn, (HIMutableShapeRef) dmgRgn);

	    result = HIShapeIsEmpty(dmgRgn) ? 0 : 1;


	    /* Convert to Tk coordinates, offset by the window origin. */


	    TkMacOSXSetWithNativeRegion(damageRgn, dmgRgn);
	    if (extraRgn) {
		CFRelease(extraRgn);
	    }


 	    /* Scroll the rectangle. */


 	    [view scrollRect:scrollSrc by:NSMakeSize(dx, -dy)];
  	}
    } else {
	dmgRgn = HIShapeCreateEmpty();
	TkMacOSXSetWithNativeRegion(damageRgn, dmgRgn);
    }

................................................................................
 *----------------------------------------------------------------------
 *
 * TkMacOSXSetUpDrawingContext --
 *
 *	Set up a drawing context for the given drawable and GC.
 *
 * Results:
 *	Boolean indicating whether it is ok to draw; if false, drawing
 *	context was not setup, so do not attempt to draw and do not call
 *	TkMacOSXRestoreDrawingContext().
 *
 * Side effects:
 *	None.
 *
 *----------------------------------------------------------------------
 */

Bool
TkMacOSXSetupDrawingContext(
    Drawable d,
    GC gc,
    int useCG, /* advisory only ! */
    TkMacOSXDrawingContext *dcPtr)
{
    MacDrawable *macDraw = ((MacDrawable*)d);
    Bool canDraw = true;
    NSWindow *win = NULL;
    TkMacOSXDrawingContext dc = {};
    CGRect clipBounds;

    /*
     * If the drawable is not a pixmap and it has an associated
     * NSWindow then we know we are drawing to a window.
     */

    if (!(macDraw->flags & TK_IS_PIXMAP)) {
	win = TkMacOSXDrawableWindow(d);
    }

    /*
................................................................................
    ClipToGC(d, gc, &dc.clipRgn);
    if (dc.clipRgn && HIShapeIsEmpty(dc.clipRgn)) {
	canDraw = false;
	goto end;
    }

    /*
     * If we already have a CGContext, use it.  Otherwise, if we
     * are drawing to a window then we can get one from the
     * window.
     */

    dc.context = TkMacOSXGetCGContextForDrawable(d);
    if (dc.context) {
	dc.portBounds = clipBounds = CGContextGetClipBoundingBox(dc.context);
    } else if (win) {
	NSView *view = TkMacOSXDrawableView(macDraw);

	if (view) {




	    /*
	     * We can only draw into the view when the current CGContext is
	     * valid and belongs to the view.  Validity can only be guaranteed
	     * inside of a view's drawRect or setFrame methods.  The isDrawing
	     * attribute tells us whether we are being called from one of those
	     * methods.
	     *
	     * If the CGContext is not valid, or belongs to a different View,
	     * then we mark our view as needing display and return failure.
	     * It should get drawn in a later call to drawRect.
	     */

           if (view != [NSView focusView]) {
	       [view setNeedsDisplay:YES];
	       canDraw = false;
	       goto end;
	   }
	    dc.view = view;
	    dc.context = GET_CGCONTEXT;
	    dc.portBounds = NSRectToCGRect([view bounds]);
	    if (dc.clipRgn) {
		clipBounds = CGContextGetClipBoundingBox(dc.context);
	    }
	} else {
	    Tcl_Panic("TkMacOSXSetupDrawingContext(): "
		    "no NSView to draw into !");
	}
    } else {
	Tcl_Panic("TkMacOSXSetupDrawingContext(): "
		"no context to draw into !");
    }

    /*
     * Configure the drawing context.
     */

    if (dc.context) {
	CGAffineTransform t = { .a = 1, .b = 0, .c = 0, .d = -1, .tx = 0,



		.ty = dc.portBounds.size.height};


	dc.portBounds.origin.x += macDraw->xOff;
	dc.portBounds.origin.y += macDraw->yOff;
	CGContextSaveGState(dc.context);
	CGContextSetTextDrawingMode(dc.context, kCGTextFill);
	CGContextConcatCTM(dc.context, t);
	if (dc.clipRgn) {
#ifdef TK_MAC_DEBUG_DRAWING
................................................................................
	    CGContextSaveGState(dc.context);
	    ChkErr(HIShapeReplacePathInCGContext, dc.clipRgn, dc.context);
	    CGContextSetRGBFillColor(dc.context, 1.0, 0.0, 0.0, 0.1);
	    CGContextEOFillPath(dc.context);
	    CGContextRestoreGState(dc.context);
#endif /* TK_MAC_DEBUG_DRAWING */
	    CGRect r;

	    if (!HIShapeIsRectangular(dc.clipRgn) || !CGRectContainsRect(
		    *HIShapeGetBounds(dc.clipRgn, &r),
		    CGRectApplyAffineTransform(clipBounds, t))) {
		ChkErr(HIShapeReplacePathInCGContext, dc.clipRgn, dc.context);
		CGContextEOClip(dc.context);
	    }
	}
................................................................................
	    double w = gc->line_width;

	    TkMacOSXSetColorInContext(gc, gc->foreground, dc.context);
	    if (win) {
		CGContextSetPatternPhase(dc.context, CGSizeMake(
			dc.portBounds.size.width, dc.portBounds.size.height));
	    }
	    if(gc->function != GXcopy) {
		TkMacOSXDbgMsg("Logical functions other than GXcopy are "
			"not supported for CG drawing!");
	    }


	    /* When should we antialias? */


	    shouldAntialias = !notAA(gc->line_width);
	    if (!shouldAntialias) {

		/* Make non-antialiased CG drawing look more like X11 */


		w -= (gc->line_width ? NON_AA_CG_OFFSET : 0);
	    }
	    CGContextSetShouldAntialias(dc.context, shouldAntialias);
	    CGContextSetLineWidth(dc.context, w);
	    if (gc->line_style != LineSolid) {
		int num = 0;
		char *p = &(gc->dashes);
		CGFloat dashOffset = gc->dash_offset;
		CGFloat lengths[10];

		while (p[num] != '\0' && num < 10) {
		    lengths[num] = p[num];
		    num++;
		}
		CGContextSetLineDash(dc.context, dashOffset, lengths, num);
	    }
	    if ((unsigned)gc->cap_style < sizeof(cgCap)/sizeof(CGLineCap)) {
		CGContextSetLineCap(dc.context,
			cgCap[(unsigned)gc->cap_style]);
	    }
	    if ((unsigned)gc->join_style < sizeof(cgJoin)/sizeof(CGLineJoin)) {
		CGContextSetLineJoin(dc.context,
			cgJoin[(unsigned)gc->join_style]);
	    }
	}
    }

end:
#ifdef TK_MAC_DEBUG_DRAWING
    if (!canDraw && win != NULL) {
	TkWindow *winPtr = TkMacOSXGetTkWindow(win);


	if (winPtr) fprintf(stderr, "Cannot draw in %s - postponing.\n",
			    Tk_PathName(winPtr));

    }
#endif
    if (!canDraw && dc.clipRgn) {
	CFRelease(dc.clipRgn);
	dc.clipRgn = NULL;
    }
    *dcPtr = dc;
................................................................................
    MacDrawable *macDraw = (MacDrawable *) drawable;
    HIShapeRef clipRgn = NULL;

    if (macDraw->winPtr && macDraw->flags & TK_CLIP_INVALID) {
	TkMacOSXUpdateClipRgn(macDraw->winPtr);
#ifdef TK_MAC_DEBUG_DRAWING
	TkMacOSXDbgMsg("%s", macDraw->winPtr->pathName);

	NSView *view = TkMacOSXDrawableView(macDraw);

	CGContextSaveGState(context);
	CGContextConcatCTM(context, CGAffineTransformMake(1.0, 0.0, 0.0,
	      -1.0, 0.0, [view bounds].size.height));
	ChkErr(HIShapeReplacePathInCGContext, macDraw->visRgn, context);
	CGContextSetRGBFillColor(context, 0.0, 1.0, 0.0, 0.1);
	CGContextEOFillPath(context);
	CGContextRestoreGState(context);
................................................................................
}
 
/*
 *----------------------------------------------------------------------
 *
 * TkMacOSXSetUpClippingRgn --
 *
 *	Set up the clipping region so that drawing only occurs on the
 *	specified X subwindow.
 *
 * Results:
 *	None.
 *
 * Side effects:
 *	None.
 *
................................................................................
}
 
/*
 *----------------------------------------------------------------------
 *
 * TkpClipDrawableToRect --
 *
 *	Clip all drawing into the drawable d to the given rectangle.
 *	If width or height are negative, reset to no clipping.
 *
 * Results:
 *	None.
 *
 * Side effects:
 *	Subsequent drawing into d is offset and clipped as specified.
 *
................................................................................
static void
ClipToGC(
    Drawable d,
    GC gc,
    HIShapeRef *clipRgnPtr) /* must point to initialized variable */
{
    if (gc && gc->clip_mask &&
	    ((TkpClipMask*)gc->clip_mask)->type == TKP_CLIP_REGION) {
	TkRegion gcClip = ((TkpClipMask*)gc->clip_mask)->value.region;
	int xOffset = ((MacDrawable *) d)->xOff + gc->clip_x_origin;
	int yOffset = ((MacDrawable *) d)->yOff + gc->clip_y_origin;
	HIShapeRef clipRgn = *clipRgnPtr, gcClipRgn;

	TkMacOSXOffsetRegion(gcClip, xOffset, yOffset);
	gcClipRgn = TkMacOSXGetNativeRegion(gcClip);
	if (clipRgn) {
................................................................................
}
 
/*
 *----------------------------------------------------------------------
 *
 * TkMacOSXMakeStippleMap --
 *
 *	Given a drawable and a stipple pattern this function draws the
 *	pattern repeatedly over the drawable. The drawable can then
 *	be used as a mask for bit-bliting a stipple pattern over an
 *	object.
 *
 * Results:
 *	A BitMap data structure.
 *
 * Side effects:
 *	None.
 *
................................................................................
}
 
/*
 *----------------------------------------------------------------------
 *
 * TkpDrawHighlightBorder --
 *
 *	This procedure draws a rectangular ring around the outside of
 *	a widget to indicate that it has received the input focus.
 *
 *	On the Macintosh, this puts a 1 pixel border in the bgGC color
 *	between the widget and the focus ring, except in the case where
 *	highlightWidth is 1, in which case the border is left out.
 *
 *	For proper Mac L&F, use highlightWidth of 3.
 *
 * Results:
 *	None.
 *
 * Side effects:
 *	A rectangle "width" pixels wide is drawn in "drawable",
 *	corresponding to the outer area of "tkwin".
 *
 *----------------------------------------------------------------------
 */

void
TkpDrawHighlightBorder (
    Tk_Window tkwin,
................................................................................
}
 
/*
 *----------------------------------------------------------------------
 *
 * TkpDrawFrame --
 *
 *	This procedure draws the rectangular frame area. If the user
 *	has requested themeing, it draws with the background theme.
 *
 * Results:
 *	None.
 *
 * Side effects:
 *	Draws inside the tkwin area.
 *


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/*
 * tkMacOSXDraw.c --
 *
 *	This file contains functions that perform drawing to Xlib windows. Most
 *	of the functions simple emulate Xlib functions.

 *
 * Copyright (c) 1995-1997 Sun Microsystems, Inc.
 * Copyright 2001-2009, Apple Inc.
 * Copyright (c) 2006-2009 Daniel A. Steffen <[email protected]>
 * Copyright 2014 Marc Culler.
 *
 * See the file "license.terms" for information on usage and redistribution
................................................................................
/*
#ifdef TK_MAC_DEBUG
#define TK_MAC_DEBUG_DRAWING
#define TK_MAC_DEBUG_IMAGE_DRAWING
#endif
*/

#define radians(d)	((d) * (M_PI/180.0))

/*
 * Non-antialiased CG drawing looks better and more like X11 drawing when using
 * very fine lines, so decrease all linewidths by the following constant.
 */
#define NON_AA_CG_OFFSET .999

static int cgAntiAliasLimit = 0;
#define notAA(w)	((w) < cgAntiAliasLimit)

static int useThemedToplevel = 0;
static int useThemedFrame = 0;

/*
 * Prototypes for functions used only in this file.
 */
................................................................................
 *      implementation does not work correctly.  Originally it relied on
 *      [NSBitmapImageRep initWithFocusedViewRect:view_rect] which was
 *      deprecated by Apple in OSX 10.14 and also required the use of other
 *      deprecated functions such as [NSView lockFocus]. Apple's suggested
 *      replacement is [NSView cacheDisplayInRect: toBitmapImageRep:] and that
 *      is what is being used here.  However, that method only works when the
 *      view has a valid CGContext, and a view is only guaranteed to have a
 *      valid context during a call to [NSView drawRect]. To further complicate
 *      matters, cacheDisplayInRect calls [NSView drawRect]. Essentially it is
 *      asking the view to draw a subrectangle of itself into a special
 *      graphics context which is linked to the BitmapImageRep. But our
 *      implementation of [NSView drawRect] does not allow recursive calls. If
 *      called recursively it returns immediately without doing any drawing.
 *      So the bottom line is that this function either returns a NULL pointer
 *      or a black image. To make it useful would require a significant amount
 *      of rewriting of the drawRect method. Perhaps the next release of OSX
 *      will include some more helpful ways of doing this.
 *
 * Results:
 *	Returns an NSBitmapRep representing the image of the given rectangle of
 *      the given drawable. This object is retained. The caller is responsible
 *      for releasing it.
 *
 *      NOTE: The x,y coordinates should be relative to a coordinate system
 *      with origin at the top left, as used by XImage and CGImage, not bottom
 *      left as used by NSView.
 *
 * Side effects:
 *     None
 *
 *----------------------------------------------------------------------
 */

NSBitmapImageRep *
TkMacOSXBitmapRepFromDrawableRect(
    Drawable drawable,
    int x,
    int y,
    unsigned int width,
    unsigned int height)
{
    MacDrawable *mac_drawable = (MacDrawable *) drawable;
    CGContextRef cg_context = NULL;
    CGImageRef cg_image = NULL, sub_cg_image = NULL;
    NSBitmapImageRep *bitmap_rep = NULL;
    NSView *view = NULL;
    if (mac_drawable->flags & TK_IS_PIXMAP) {

	/*
	 * This MacDrawable is a bitmap, so its view is NULL.
	 */


	CGRect image_rect = CGRectMake(x, y, width, height);

	cg_context = TkMacOSXGetCGContextForDrawable(drawable);
	cg_image = CGBitmapContextCreateImage((CGContextRef) cg_context);
	sub_cg_image = CGImageCreateWithImageInRect(cg_image, image_rect);
	if (sub_cg_image) {
	    bitmap_rep = [NSBitmapImageRep alloc];
	    [bitmap_rep initWithCGImage:sub_cg_image];
	}
	if (cg_image) {
	    CGImageRelease(cg_image);
	}
    } else if ((view = TkMacOSXDrawableView(mac_drawable)) != NULL) {

	/*
	 * Convert Tk top-left to NSView bottom-left coordinates.
	 */

	int view_height = [view bounds].size.height;
	NSRect view_rect = NSMakeRect(x + mac_drawable->xOff,
		view_height - height - y - mac_drawable->yOff,
		width, height);

	/*
	 * Attempt to copy from the view to a bitmapImageRep.  If the view does
	 * not have a valid CGContext, doing this will silently corrupt memory
	 * and make a big mess. So, in that case, we mark the view as needing
	 * display and return NULL.
	 */
................................................................................
 *
 *	Copies data from one drawable to another.
 *
 * Results:
 *	None.
 *
 * Side effects:
 *	Data is moved from a window or bitmap to a second window or bitmap.

 *
 *----------------------------------------------------------------------
 */

void
XCopyArea(
    Display *display,		/* Display. */
    Drawable src,		/* Source drawable. */
    Drawable dst,		/* Destination drawable. */
    GC gc,			/* GC to use. */
    int src_x,			/* X & Y, width & height */
    int src_y,			/* define the source rectangle */
    unsigned int width,		/* that will be copied. */
    unsigned int height,
    int dest_x,			/* Dest X & Y on dest rect. */
    int dest_y)
{
    TkMacOSXDrawingContext dc;
    MacDrawable *srcDraw = (MacDrawable *) src;
    NSBitmapImageRep *bitmap_rep = NULL;
................................................................................

    display->request++;
    if (!width || !height) {
	return;
    }

    if (!TkMacOSXSetupDrawingContext(dst, gc, 1, &dc)) {

	TkMacOSXDbgMsg("Failed to setup drawing context.");
	return;
    }

    if (!dc.context) {
	TkMacOSXDbgMsg("Invalid destination drawable - no context.");
	return;
    }

    if (srcDraw->flags & TK_IS_PIXMAP) {
	img = TkMacOSXCreateCGImageWithDrawable(src);
    } else if (TkMacOSXDrawableWindow(src)) {
	bitmap_rep = TkMacOSXBitmapRepFromDrawableRect(src,
		src_x, src_y, width, height);
	if (bitmap_rep) {
	    img = [bitmap_rep CGImage];
	}
    } else {
	TkMacOSXDbgMsg("Invalid source drawable - neither window nor pixmap.");
    }

    if (img) {
	bounds = CGRectMake(0, 0, srcDraw->size.width, srcDraw->size.height);
	srcRect = CGRectMake(src_x, src_y, width, height);
	dstRect = CGRectMake(dest_x, dest_y, width, height);
	TkMacOSXDrawCGImage(dst, gc, dc.context, img,
		gc->foreground, gc->background, bounds, srcRect, dstRect);
	CFRelease(img);
    } else {
	TkMacOSXDbgMsg("Failed to construct CGImage.");
    }






    TkMacOSXRestoreDrawingContext(&dc);
}
 
/*
 *----------------------------------------------------------------------
 *
 * XCopyPlane --
 *
 *	Copies a bitmap from a source drawable to a destination drawable. The
 *	plane argument specifies which bit plane of the source contains the
 *	bitmap. Note that this implementation ignores the gc->function.

 *
 * Results:
 *	None.
 *
 * Side effects:
 *	Changes the destination drawable.
 *
................................................................................
    if (plane != 1) {
	Tcl_Panic("Unexpected plane specified for XCopyPlane");
    }
    if (srcDraw->flags & TK_IS_PIXMAP) {
	if (!TkMacOSXSetupDrawingContext(dst, gc, 1, &dc)) {
	    return;
	}

	CGContextRef context = dc.context;

	if (context) {
	    CGImageRef img = TkMacOSXCreateCGImageWithDrawable(src);

	    if (img) {
		TkpClipMask *clipPtr = (TkpClipMask *) gc->clip_mask;
		unsigned long imageBackground  = gc->background;

                if (clipPtr && clipPtr->type == TKP_CLIP_PIXMAP) {
		    srcRect = CGRectMake(src_x, src_y, width, height);
		    CGImageRef mask = TkMacOSXCreateCGImageWithDrawable(
			    clipPtr->value.pixmap);
		    CGImageRef submask = CGImageCreateWithImageInRect(
			    img, srcRect);
		    CGRect rect = CGRectMake(dest_x, dest_y, width, height);

		    rect = CGRectOffset(rect, dstDraw->xOff, dstDraw->yOff);
		    CGContextSaveGState(context);

		    /*
		     * Move the origin of the destination to top left.
		     */

		    CGContextTranslateCTM(context,
			    0, rect.origin.y + CGRectGetMaxY(rect));
		    CGContextScaleCTM(context, 1, -1);

		    /*
		     * Fill with the background color, clipping to the mask.
		     */

		    CGContextClipToMask(context, rect, submask);
		    TkMacOSXSetColorInContext(gc, gc->background, dc.context);
		    CGContextFillRect(context, rect);

		    /*
		     * Fill with the foreground color, clipping to the
		     * intersection of img and mask.
		     */

		    CGImageRef subimage = CGImageCreateWithImageInRect(
			    img, srcRect);
		    CGContextClipToMask(context, rect, subimage);
		    TkMacOSXSetColorInContext(gc, gc->foreground, context);
		    CGContextFillRect(context, rect);
		    CGContextRestoreGState(context);
		    CGImageRelease(img);
		    CGImageRelease(mask);
		    CGImageRelease(submask);
		    CGImageRelease(subimage);
		} else {
		    bounds = CGRectMake(0, 0,
			    srcDraw->size.width, srcDraw->size.height);
		    srcRect = CGRectMake(src_x, src_y, width, height);
		    dstRect = CGRectMake(dest_x, dest_y, width, height);
		    TkMacOSXDrawCGImage(dst, gc, dc.context, img,
			    gc->foreground, imageBackground, bounds,
			    srcRect, dstRect);
		    CGImageRelease(img);
		}
	    } else {
		/* no image */
		TkMacOSXDbgMsg("Invalid source drawable");
	    }
	} else {
	    TkMacOSXDbgMsg("Invalid destination drawable - "
		    "could not get a bitmap context.");
	}
	TkMacOSXRestoreDrawingContext(&dc);
    } else {
	/*
	 * Source drawable is a Window, not a Pixmap.
	 */

	XCopyArea(display, src, dst, gc, src_x, src_y, width, height,
		dest_x, dest_y);
    }
}
 
/*
 *----------------------------------------------------------------------
 *
 * TkMacOSXCreateCGImageWithDrawable --
................................................................................
 *
 * Side effects:
 *	None.
 *
 *----------------------------------------------------------------------
 */

static NSImage *
CreateNSImageWithPixmap(
    Pixmap pixmap,
    int width,
    int height)
{
    CGImageRef cgImage;
    NSImage *nsImage;
................................................................................
 *
 * Side effects:
 *	None.
 *
 *----------------------------------------------------------------------
 */

NSImage *
TkMacOSXGetNSImageWithTkImage(
    Display *display,
    Tk_Image image,
    int width,
    int height)
{
    Pixmap pixmap = Tk_GetPixmap(display, None, width, height, 0);
................................................................................
 *
 * Side effects:
 *	None.
 *
 *----------------------------------------------------------------------
 */

NSImage *
TkMacOSXGetNSImageWithBitmap(
    Display *display,
    Pixmap bitmap,
    GC gc,
    int width,
    int height)
{
................................................................................

    if (macDraw && (macDraw->flags & TK_IS_PIXMAP) && !macDraw->context) {
	const size_t bitsPerComponent = 8;
	size_t bitsPerPixel, bytesPerRow, len;
	CGColorSpaceRef colorspace = NULL;
	CGBitmapInfo bitmapInfo =
#ifdef __LITTLE_ENDIAN__
		kCGBitmapByteOrder32Host;
#else
		kCGBitmapByteOrderDefault;
#endif
	char *data;
	CGRect bounds = CGRectMake(0, 0,
		macDraw->size.width, macDraw->size.height);

	if (macDraw->flags & TK_IS_BW_PIXMAP) {
	    bitsPerPixel = 8;
	    bitmapInfo = (CGBitmapInfo) kCGImageAlphaOnly;
	} else {
	    colorspace = CGColorSpaceCreateDeviceRGB();
	    bitsPerPixel = 32;
	    bitmapInfo |= kCGImageAlphaPremultipliedFirst;
	}
	bytesPerRow = ((size_t)
		macDraw->size.width * bitsPerPixel + 127) >> 3 & ~15;
	len = macDraw->size.height * bytesPerRow;
	data = ckalloc(len);
	bzero(data, len);
	macDraw->context = CGBitmapContextCreate(data, macDraw->size.width,
		macDraw->size.height, bitsPerComponent, bytesPerRow,
		colorspace, bitmapInfo);
	if (macDraw->context) {
................................................................................
	    if (subImage) {
		image = subImage;
	    }
	}
	dstBounds = CGRectOffset(dstBounds, macDraw->xOff, macDraw->yOff);
	if (CGImageIsMask(image)) {
	    if (macDraw->flags & TK_IS_BW_PIXMAP) {

		/*
		 * Set fill color to black; background comes from the context,
		 * or is transparent.
		 */

		if (imageBackground != TRANSPARENT_PIXEL << 24) {
		    CGContextClearRect(context, dstBounds);
		}
		CGContextSetRGBFillColor(context, 0.0, 0.0, 0.0, 1.0);
................................................................................
#ifdef TK_MAC_DEBUG_IMAGE_DRAWING
	CGContextSaveGState(context);
	CGContextSetLineWidth(context, 1.0);
	CGContextSetRGBStrokeColor(context, 0, 0, 0, 0.1);
	CGContextSetRGBFillColor(context, 0, 1, 0, 0.1);
	CGContextFillRect(context, dstBounds);
	CGContextStrokeRect(context, dstBounds);

	CGPoint p[4] = {dstBounds.origin,
	    CGPointMake(CGRectGetMaxX(dstBounds), CGRectGetMaxY(dstBounds)),
	    CGPointMake(CGRectGetMinX(dstBounds), CGRectGetMaxY(dstBounds)),
	    CGPointMake(CGRectGetMaxX(dstBounds), CGRectGetMinY(dstBounds))
	};

	CGContextStrokeLineSegments(context, p, 4);
	CGContextRestoreGState(context);
	TkMacOSXDbgMsg("Drawing CGImage at (x=%f, y=%f), (w=%f, h=%f)",
		dstBounds.origin.x, dstBounds.origin.y,
		dstBounds.size.width, dstBounds.size.height);
#else /* TK_MAC_DEBUG_IMAGE_DRAWING */
	CGContextSaveGState(context);
................................................................................
			macWin->yOff + points[i].y + o);
	    } else {
		prevx += points[i].x;
		prevy += points[i].y;
		CGContextAddLineToPoint(dc.context, prevx, prevy);
	    }
	}

        /*
         * In the case of closed polylines, the first and last points are the
         * same. We want miter or bevel join be rendered also at this point,
         * this needs telling CoreGraphics that the path is closed.

         */

        if ((points[0].x == points[npoints-1].x) &&
                (points[0].y == points[npoints-1].y)) {
            CGContextClosePath(dc.context);
        }
	CGContextStrokePath(dc.context);
    }
    TkMacOSXRestoreDrawingContext(&dc);
................................................................................
 *	Draws a filled polygon on the specified drawable.
 *
 *----------------------------------------------------------------------
 */

void
XFillPolygon(
    Display *display,		/* Display. */
    Drawable d,			/* Draw on this. */
    GC gc,			/* Use this GC. */
    XPoint *points,		/* Array of points. */
    int npoints,		/* Number of points. */
    int shape,			/* Shape to draw. */
    int mode)			/* Drawing mode. */
{
    MacDrawable *macWin = (MacDrawable *) d;
    TkMacOSXDrawingContext dc;
    int i;
................................................................................
	return;
    }
    if (dc.context) {
	CGRect rect;
	double o = (lw % 2) ? .5 : 0;

	rect = CGRectMake(
		macWin->xOff + x + o, macWin->yOff + y + o,

		width, height);
	CGContextStrokeRect(dc.context, rect);
    }
    TkMacOSXRestoreDrawingContext(&dc);
}
 
#ifdef TK_MACOSXDRAW_UNUSED
/*
 *----------------------------------------------------------------------
 *
 * XDrawRectangles --
 *
 *	Draws the outlines of the specified rectangles as if a five-point
 *	PolyLine protocol request were specified for each rectangle:

 *
 *	    [x,y] [x+width,y] [x+width,y+height] [x,y+height] [x,y]
 *
 *	For the specified rectangles, these functions do not draw a pixel more
 *	than once. XDrawRectangles draws the rectangles in the order listed in
 *	the array. If rectangles intersect, the intersecting pixels are drawn
 *	multiple times. Draws a rectangle.

 *
 * Results:
 *	None.
 *
 * Side effects:
 *	Draws rectangles on the specified drawable.
 *
................................................................................
 *	Draws onto the specified drawable.
 *
 *----------------------------------------------------------------------
 */

int
XFillRectangles(
    Display *display,		/* Display. */
    Drawable d,			/* Draw on this. */
    GC gc,			/* Use this GC. */
    XRectangle *rectangles,	/* Rectangle array. */
    int n_rectangles)		/* Number of rectangles. */
{
    MacDrawable *macWin = (MacDrawable *) d;
    TkMacOSXDrawingContext dc;
................................................................................
    TkMacOSXRestoreDrawingContext(&dc);
    return Success;
}
 
/*
 *----------------------------------------------------------------------
 *
 * TkMacOSXDrawSolidBorder --
 *
 *	Draws a border rectangle of specified thickness inside the bounding
 *      rectangle of a Tk Window.  The border rectangle can be inset within the
 *      bounding rectangle.  For a highlight border the inset should be 0, but
 *      for a solid border around the actual window the inset should equal the
 *      thickness of the highlight border.  The color of the border rectangle
 *      is the foreground color of the graphics context passed to the function.
 *
 * Results:
 *	None.
 *
 * Side effects:
 *	Draws a rectangular border inside the bounding rectangle of a window.
 *
 *----------------------------------------------------------------------
 */

MODULE_SCOPE void
TkMacOSXDrawSolidBorder(
    Tk_Window tkwin,
    GC gc,
    int inset,
    int thickness)
{
    Drawable d = Tk_WindowId(tkwin);
    TkMacOSXDrawingContext dc;
    CGRect outerRect, innerRect;

    if (!TkMacOSXSetupDrawingContext(d, gc, 1, &dc)) {
	return;
    }
    if (dc.context) {
	outerRect = CGRectMake(Tk_X(tkwin), Tk_Y(tkwin),
			       Tk_Width(tkwin), Tk_Height(tkwin));
	outerRect = CGRectInset(outerRect, inset, inset);
	innerRect = CGRectInset(outerRect, thickness, thickness);
	CGContextBeginPath(dc.context);
	CGContextAddRect(dc.context, outerRect);
	CGContextAddRect(dc.context, innerRect);
	CGContextEOFillPath(dc.context);
    }
    TkMacOSXRestoreDrawingContext(&dc);
}
 
/*
 *----------------------------------------------------------------------
 *
 * XDrawArc --
 *
 *	Draw an arc.
 *
 * Results:
 *	None.
 *
................................................................................
 *	Draws an arc on the specified drawable.
 *
 *----------------------------------------------------------------------
 */

void
XDrawArc(
    Display *display,		/* Display. */
    Drawable d,			/* Draw on this. */
    GC gc,			/* Use this GC. */
    int x, int y,		/* Upper left of bounding rect. */
    unsigned int width,		/* Width & height. */
    unsigned int height,
    int angle1,			/* Staring angle of arc. */
    int angle2)			/* Extent of arc. */
................................................................................
 
#ifdef TK_MACOSXDRAW_UNUSED
/*
 *----------------------------------------------------------------------
 *
 * XDrawArcs --
 *
 *	Draws multiple circular or elliptical arcs. Each arc is specified by a
 *	rectangle and two angles. The center of the circle or ellipse is the
 *	center of the rect- angle, and the major and minor axes are specified

 *	by the width and height.  Positive angles indicate counterclock- wise
 *	motion, and negative angles indicate clockwise motion. If the magnitude
 *	of angle2 is greater than 360 degrees, XDrawArcs truncates it to 360
 *	degrees.
 *
 * Results:
 *	None.
 *
 * Side effects:
 *	Draws an arc for each array element on the specified drawable.
 *
................................................................................
XDrawArcs(
    Display *display,
    Drawable d,
    GC gc,
    XArc *arcArr,
    int nArcs)
{

    MacDrawable *macWin = (MacDrawable *) d;
    TkMacOSXDrawingContext dc;
    XArc *arcPtr;
    int i, lw = gc->line_width;

    display->request++;
    if (!TkMacOSXSetupDrawingContext(d, gc, 1, &dc)) {
................................................................................
 *	Draws a filled arc on the specified drawable.
 *
 *----------------------------------------------------------------------
 */

void
XFillArc(
    Display *display,		/* Display. */
    Drawable d,			/* Draw on this. */
    GC gc,			/* Use this GC. */
    int x, int y,		/* Upper left of bounding rect. */
    unsigned int width,		/* Width & height. */
    unsigned int height,
    int angle1,			/* Staring angle of arc. */
    int angle2)			/* Extent of arc. */
................................................................................
#endif
 
/*
 *----------------------------------------------------------------------
 *
 * TkScrollWindow --
 *
 *	Scroll a rectangle of the specified window and accumulate a damage
 *	region.
 *
 * Results:
 *	Returns 0 if the scroll generated no additional damage. Otherwise, sets
 *	the region that needs to be repainted after scrolling and returns 1.

 *
 * Side effects:
 *	Scrolls the bits in the window.
 *
 *----------------------------------------------------------------------
 */

................................................................................
    int x, int y,		/* Position rectangle to be scrolled. */
    int width, int height,
    int dx, int dy,		/* Distance rectangle should be moved. */
    TkRegion damageRgn)		/* Region to accumulate damage in. */
{
    Drawable drawable = Tk_WindowId(tkwin);
    MacDrawable *macDraw = (MacDrawable *) drawable;
    TKContentView *view = (TKContentView *) TkMacOSXDrawableView(macDraw);
    CGRect srcRect, dstRect;
    HIShapeRef dmgRgn = NULL, extraRgn = NULL;
    NSRect bounds, visRect, scrollSrc, scrollDst;
    int result = 0;

    if (view) {
  	/*
	 * Get the scroll area in NSView coordinates (origin at bottom left).
	 */

  	bounds = [view bounds];
 	scrollSrc = NSMakeRect(macDraw->xOff + x,
		bounds.size.height - height - (macDraw->yOff + y),
		width, height);
 	scrollDst = NSOffsetRect(scrollSrc, dx, -dy);

  	/*
	 * Limit scrolling to the window content area.
	 */

 	visRect = [view visibleRect];
 	scrollSrc = NSIntersectionRect(scrollSrc, visRect);
 	scrollDst = NSIntersectionRect(scrollDst, visRect);
 	if (!NSIsEmptyRect(scrollSrc) && !NSIsEmptyRect(scrollDst)) {
  	    /*
  	     * Mark the difference between source and destination as damaged.
	     * This region is described in NSView coordinates (y=0 at the
	     * bottom) and converted to Tk coordinates later.
  	     */

	    srcRect = CGRectMake(x, y, width, height);
	    dstRect = CGRectOffset(srcRect, dx, dy);

	    /*
	     * Compute the damage.
	     */

  	    dmgRgn = HIShapeCreateMutableWithRect(&srcRect);
 	    extraRgn = HIShapeCreateWithRect(&dstRect);
 	    ChkErr(HIShapeDifference, dmgRgn, extraRgn,
		    (HIMutableShapeRef) dmgRgn);
	    result = HIShapeIsEmpty(dmgRgn) ? 0 : 1;

	    /*
	     * Convert to Tk coordinates, offset by the window origin.
	     */

	    TkMacOSXSetWithNativeRegion(damageRgn, dmgRgn);
	    if (extraRgn) {
		CFRelease(extraRgn);
	    }

 	    /*
	     * Scroll the rectangle.
	     */

 	    [view scrollRect:scrollSrc by:NSMakeSize(dx, -dy)];
  	}
    } else {
	dmgRgn = HIShapeCreateEmpty();
	TkMacOSXSetWithNativeRegion(damageRgn, dmgRgn);
    }

................................................................................
 *----------------------------------------------------------------------
 *
 * TkMacOSXSetUpDrawingContext --
 *
 *	Set up a drawing context for the given drawable and GC.
 *
 * Results:
 *	Boolean indicating whether it is ok to draw; if false, drawing context
 *	was not setup, so do not attempt to draw and do not call
 *	TkMacOSXRestoreDrawingContext().
 *
 * Side effects:
 *	None.
 *
 *----------------------------------------------------------------------
 */

Bool
TkMacOSXSetupDrawingContext(
    Drawable d,
    GC gc,
    int useCG,			/* advisory only ! */
    TkMacOSXDrawingContext *dcPtr)
{
    MacDrawable *macDraw = (MacDrawable *) d;
    Bool canDraw = true;
    NSWindow *win = NULL;
    TkMacOSXDrawingContext dc = {};
    CGRect clipBounds;

    /*
     * If the drawable is not a pixmap and it has an associated NSWindow then
     * we know we are drawing to a window.
     */

    if (!(macDraw->flags & TK_IS_PIXMAP)) {
	win = TkMacOSXDrawableWindow(d);
    }

    /*
................................................................................
    ClipToGC(d, gc, &dc.clipRgn);
    if (dc.clipRgn && HIShapeIsEmpty(dc.clipRgn)) {
	canDraw = false;
	goto end;
    }

    /*
     * If we already have a CGContext, use it.  Otherwise, if we are drawing to
     * a window then we can get one from the window.

     */

    dc.context = TkMacOSXGetCGContextForDrawable(d);
    if (dc.context) {
	dc.portBounds = clipBounds = CGContextGetClipBoundingBox(dc.context);
    } else if (win) {
	NSView *view = TkMacOSXDrawableView(macDraw);

	if (!view) {
	    Tcl_Panic("TkMacOSXSetupDrawingContext(): "
		    "no NSView to draw into !");
	}

	/*
	 * We can only draw into the view when the current CGContext is valid
	 * and belongs to the view.  Validity can only be guaranteed inside of
	 * a view's drawRect or setFrame methods.  The isDrawing attribute
	 * tells us whether we are being called from one of those methods.

	 *
	 * If the CGContext is not valid, or belongs to a different View, then
	 * we mark our view as needing display and return failure. It should
	 * get drawn in a later call to drawRect.
	 */

	if (view != [NSView focusView]) {
	    [view setNeedsDisplay:YES];
	    canDraw = false;
	    goto end;
	}
	dc.view = view;
	dc.context = GET_CGCONTEXT;
	dc.portBounds = NSRectToCGRect([view bounds]);
	if (dc.clipRgn) {
	    clipBounds = CGContextGetClipBoundingBox(dc.context);
	}




    } else {
	Tcl_Panic("TkMacOSXSetupDrawingContext(): "
		"no context to draw into !");
    }

    /*
     * Configure the drawing context.
     */

    if (dc.context) {
	CGAffineTransform t = {
	    .a = 1, .b = 0,
	    .c = 0, .d = -1,
	    .tx = 0,
	    .ty = dc.portBounds.size.height
	};

	dc.portBounds.origin.x += macDraw->xOff;
	dc.portBounds.origin.y += macDraw->yOff;
	CGContextSaveGState(dc.context);
	CGContextSetTextDrawingMode(dc.context, kCGTextFill);
	CGContextConcatCTM(dc.context, t);
	if (dc.clipRgn) {
#ifdef TK_MAC_DEBUG_DRAWING
................................................................................
	    CGContextSaveGState(dc.context);
	    ChkErr(HIShapeReplacePathInCGContext, dc.clipRgn, dc.context);
	    CGContextSetRGBFillColor(dc.context, 1.0, 0.0, 0.0, 0.1);
	    CGContextEOFillPath(dc.context);
	    CGContextRestoreGState(dc.context);
#endif /* TK_MAC_DEBUG_DRAWING */
	    CGRect r;

	    if (!HIShapeIsRectangular(dc.clipRgn) || !CGRectContainsRect(
		    *HIShapeGetBounds(dc.clipRgn, &r),
		    CGRectApplyAffineTransform(clipBounds, t))) {
		ChkErr(HIShapeReplacePathInCGContext, dc.clipRgn, dc.context);
		CGContextEOClip(dc.context);
	    }
	}
................................................................................
	    double w = gc->line_width;

	    TkMacOSXSetColorInContext(gc, gc->foreground, dc.context);
	    if (win) {
		CGContextSetPatternPhase(dc.context, CGSizeMake(
			dc.portBounds.size.width, dc.portBounds.size.height));
	    }
	    if (gc->function != GXcopy) {
		TkMacOSXDbgMsg("Logical functions other than GXcopy are "
			"not supported for CG drawing!");
	    }

	    /*
	     * When should we antialias?
	     */

	    shouldAntialias = !notAA(gc->line_width);
	    if (!shouldAntialias) {
		/*
		 * Make non-antialiased CG drawing look more like X11.
		 */

		w -= (gc->line_width ? NON_AA_CG_OFFSET : 0);
	    }
	    CGContextSetShouldAntialias(dc.context, shouldAntialias);
	    CGContextSetLineWidth(dc.context, w);
	    if (gc->line_style != LineSolid) {
		int num = 0;
		char *p = &gc->dashes;
		CGFloat dashOffset = gc->dash_offset;
		CGFloat lengths[10];

		while (p[num] != '\0' && num < 10) {
		    lengths[num] = p[num];
		    num++;
		}
		CGContextSetLineDash(dc.context, dashOffset, lengths, num);
	    }
	    if ((unsigned) gc->cap_style < sizeof(cgCap)/sizeof(CGLineCap)) {
		CGContextSetLineCap(dc.context,
			cgCap[(unsigned) gc->cap_style]);
	    }
	    if ((unsigned)gc->join_style < sizeof(cgJoin)/sizeof(CGLineJoin)) {
		CGContextSetLineJoin(dc.context,
			cgJoin[(unsigned) gc->join_style]);
	    }
	}
    }

end:
#ifdef TK_MAC_DEBUG_DRAWING
    if (!canDraw && win != NULL) {
	TkWindow *winPtr = TkMacOSXGetTkWindow(win);

	if (winPtr) {
	    fprintf(stderr, "Cannot draw in %s - postponing.\n",
		    Tk_PathName(winPtr));
	}
    }
#endif
    if (!canDraw && dc.clipRgn) {
	CFRelease(dc.clipRgn);
	dc.clipRgn = NULL;
    }
    *dcPtr = dc;
................................................................................
    MacDrawable *macDraw = (MacDrawable *) drawable;
    HIShapeRef clipRgn = NULL;

    if (macDraw->winPtr && macDraw->flags & TK_CLIP_INVALID) {
	TkMacOSXUpdateClipRgn(macDraw->winPtr);
#ifdef TK_MAC_DEBUG_DRAWING
	TkMacOSXDbgMsg("%s", macDraw->winPtr->pathName);

	NSView *view = TkMacOSXDrawableView(macDraw);

	CGContextSaveGState(context);
	CGContextConcatCTM(context, CGAffineTransformMake(1.0, 0.0, 0.0,
	      -1.0, 0.0, [view bounds].size.height));
	ChkErr(HIShapeReplacePathInCGContext, macDraw->visRgn, context);
	CGContextSetRGBFillColor(context, 0.0, 1.0, 0.0, 0.1);
	CGContextEOFillPath(context);
	CGContextRestoreGState(context);
................................................................................
}
 
/*
 *----------------------------------------------------------------------
 *
 * TkMacOSXSetUpClippingRgn --
 *
 *	Set up the clipping region so that drawing only occurs on the specified
 *	X subwindow.
 *
 * Results:
 *	None.
 *
 * Side effects:
 *	None.
 *
................................................................................
}
 
/*
 *----------------------------------------------------------------------
 *
 * TkpClipDrawableToRect --
 *
 *	Clip all drawing into the drawable d to the given rectangle. If width
 *	or height are negative, reset to no clipping.
 *
 * Results:
 *	None.
 *
 * Side effects:
 *	Subsequent drawing into d is offset and clipped as specified.
 *
................................................................................
static void
ClipToGC(
    Drawable d,
    GC gc,
    HIShapeRef *clipRgnPtr) /* must point to initialized variable */
{
    if (gc && gc->clip_mask &&
	    ((TkpClipMask *) gc->clip_mask)->type == TKP_CLIP_REGION) {
	TkRegion gcClip = ((TkpClipMask *) gc->clip_mask)->value.region;
	int xOffset = ((MacDrawable *) d)->xOff + gc->clip_x_origin;
	int yOffset = ((MacDrawable *) d)->yOff + gc->clip_y_origin;
	HIShapeRef clipRgn = *clipRgnPtr, gcClipRgn;

	TkMacOSXOffsetRegion(gcClip, xOffset, yOffset);
	gcClipRgn = TkMacOSXGetNativeRegion(gcClip);
	if (clipRgn) {
................................................................................
}
 
/*
 *----------------------------------------------------------------------
 *
 * TkMacOSXMakeStippleMap --
 *
 *	Given a drawable and a stipple pattern this function draws the pattern
 *	repeatedly over the drawable. The drawable can then be used as a mask
 *	for bit-bliting a stipple pattern over an object.

 *
 * Results:
 *	A BitMap data structure.
 *
 * Side effects:
 *	None.
 *
................................................................................
}
 
/*
 *----------------------------------------------------------------------
 *
 * TkpDrawHighlightBorder --
 *
 *	This procedure draws a rectangular ring around the outside of a widget
 *	to indicate that it has received the input focus.
 *
 *	On the Macintosh, this puts a 1 pixel border in the bgGC color between
 *	the widget and the focus ring, except in the case where highlightWidth
 *	is 1, in which case the border is left out.
 *
 *	For proper Mac L&F, use highlightWidth of 3.
 *
 * Results:
 *	None.
 *
 * Side effects:
 *	A rectangle "width" pixels wide is drawn in "drawable", corresponding
 *	to the outer area of "tkwin".
 *
 *----------------------------------------------------------------------
 */

void
TkpDrawHighlightBorder (
    Tk_Window tkwin,
................................................................................
}
 
/*
 *----------------------------------------------------------------------
 *
 * TkpDrawFrame --
 *
 *	This procedure draws the rectangular frame area. If the user has
 *	requested themeing, it draws with the background theme.
 *
 * Results:
 *	None.
 *
 * Side effects:
 *	Draws inside the tkwin area.
 *

Changes to macosx/tkMacOSXEmbed.c.

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    /*
     * Make a copy of the TK_EMBEDDED flag, since sometimes we need this to
     * get the port after the TkWindow structure has been freed.
     */

    macWin->flags |= TK_EMBEDDED;
    macWin->xOff = parent->winPtr->privatePtr->xOff +
	parent->winPtr->changes.border_width +
	winPtr->changes.x;
    macWin->yOff = parent->winPtr->privatePtr->yOff +
	parent->winPtr->changes.border_width +
	winPtr->changes.y;

    /*
     * Finish filling up the container structure with the embedded
     * window's information.
     */

    containerPtr->embedded = (Window) macWin;
    containerPtr->embeddedPtr = macWin->winPtr;

    /*
     * Create an event handler to clean up the Container structure when
     * tkwin is eventually deleted.
     */

    Tk_CreateEventHandler(tkwin, StructureNotifyMask, EmbeddedEventProc,
			  winPtr);

    return TCL_OK;
}
 
/*
 *----------------------------------------------------------------------
 *
................................................................................
	if (containerPtr->parentPtr != NULL) {
	    parentInterp = containerPtr->parentPtr->mainPtr->interp;
	}
	if (embeddedInterp != interp && parentInterp != interp) {
	    continue;
	}
	Tcl_DStringStartSublist(&dString);


	/* Parent id */


	if (containerPtr->parent == None) {
	    Tcl_DStringAppendElement(&dString, "");
	} else if (all) {
	    sprintf(buffer, "0x%" TCL_Z_MODIFIER "x", (size_t) containerPtr->parent);

	    Tcl_DStringAppendElement(&dString, buffer);
	} else {
	    Tcl_DStringAppendElement(&dString, "XXX");
	}


	/* Parent pathName */


	if (containerPtr->parentPtr == NULL ||
	    parentInterp != interp) {
	    Tcl_DStringAppendElement(&dString, "");
	} else {
	    Tcl_DStringAppendElement(&dString,
		    containerPtr->parentPtr->pathName);
	}

	/*
	 * On X11 embedded is a wrapper, which does not exist on macOS.
	 */

	Tcl_DStringAppendElement(&dString, "");


	/* Embedded window pathName */


	if (containerPtr->embeddedPtr == NULL ||
	    embeddedInterp != interp) {
	    Tcl_DStringAppendElement(&dString, "");
	} else {
	    Tcl_DStringAppendElement(&dString,
		    containerPtr->embeddedPtr->pathName);
	}
................................................................................
    Container *containerPtr;
    Tk_ErrorHandler errHandler;

    if (!firstContainerPtr) {
	/*
	 * When the interpreter is being dismantled this can be nil.
	 */

	return;
    }

    /*
     * Ignore any X protocol errors that happen in this procedure (almost any
     * operation could fail, for example, if the embedded application has
     * deleted its window).
................................................................................

static void
EmbedActivateProc(
    ClientData clientData,	/* Token for container window. */
    XEvent *eventPtr)		/* ResizeRequest event. */
{
    Container *containerPtr = clientData;

    if (containerPtr->embeddedPtr != NULL) {
	if (eventPtr->type == ActivateNotify) {
	    TkGenerateActivateEvents(containerPtr->embeddedPtr,1);
	} else if (eventPtr->type == DeactivateNotify) {
	    TkGenerateActivateEvents(containerPtr->embeddedPtr,0);
	}
    }
................................................................................
    int width, int height)	/* Size that the child has requested. */
{
    TkWindow *winPtr = containerPtr->parentPtr;

    /*
     * Forward the requested size into our geometry management hierarchy via
     * the container window. We need to send a Configure event back to the
     * embedded application if we decide not to honor its request; to make
     * this happen, process all idle event handlers synchronously here (so
     * that the geometry managers have had a chance to do whatever they want
     * to do), and if the window's size didn't change then generate a
     * configure event.
     */

    Tk_GeometryRequest((Tk_Window) winPtr, width, height);
    while (Tcl_DoOneEvent(TCL_IDLE_EVENTS)) {
	/* Empty loop body. */
    }
    if ((winPtr->changes.width != width)
................................................................................
 *
 * EmbedSendConfigure --
 *
 *	This is currently a stub. It is called to notify an embedded
 *	application of its current size and location. This procedure is called
 *	when the embedded application made a geometry request that we did not
 *	grant, so that the embedded application knows that its geometry didn't
 *	change after all. It is a response to ConfigureRequest events, which
 *	we do not currently synthesize on the Mac
 *
 * Results:
 *	None.
 *
 * Side effects:
 *	None.
 *
................................................................................
	     * Fabricate an event to do this.
	     */

	    if (containerPtr->parentPtr != NULL &&
		    containerPtr->parentPtr->flags & TK_BOTH_HALVES) {
		XEvent event;

		event.xany.serial =
			LastKnownRequestProcessed(Tk_Display(containerPtr->parentPtr));
		event.xany.send_event = False;
		event.xany.display = Tk_Display(containerPtr->parentPtr);

		event.xany.type = DestroyNotify;
		event.xany.window = containerPtr->parent;
		event.xdestroywindow.event = containerPtr->parent;
		Tk_QueueWindowEvent(&event, TCL_QUEUE_HEAD);






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    /*
     * Make a copy of the TK_EMBEDDED flag, since sometimes we need this to
     * get the port after the TkWindow structure has been freed.
     */

    macWin->flags |= TK_EMBEDDED;
    macWin->xOff = parent->winPtr->privatePtr->xOff +
	    parent->winPtr->changes.border_width +
	    winPtr->changes.x;
    macWin->yOff = parent->winPtr->privatePtr->yOff +
	    parent->winPtr->changes.border_width +
	    winPtr->changes.y;

    /*
     * Finish filling up the container structure with the embedded window's
     * information.
     */

    containerPtr->embedded = (Window) macWin;
    containerPtr->embeddedPtr = macWin->winPtr;

    /*
     * Create an event handler to clean up the Container structure when
     * tkwin is eventually deleted.
     */

    Tk_CreateEventHandler(tkwin, StructureNotifyMask,
	    EmbeddedEventProc, winPtr);

    return TCL_OK;
}
 
/*
 *----------------------------------------------------------------------
 *
................................................................................
	if (containerPtr->parentPtr != NULL) {
	    parentInterp = containerPtr->parentPtr->mainPtr->interp;
	}
	if (embeddedInterp != interp && parentInterp != interp) {
	    continue;
	}
	Tcl_DStringStartSublist(&dString);

	/*
	 * Parent id
	 */

	if (containerPtr->parent == None) {
	    Tcl_DStringAppendElement(&dString, "");
	} else if (all) {
	    sprintf(buffer, "0x%" TCL_Z_MODIFIER "x",
		    (size_t) containerPtr->parent);
	    Tcl_DStringAppendElement(&dString, buffer);
	} else {
	    Tcl_DStringAppendElement(&dString, "XXX");
	}

	/*
	 * Parent pathName
	 */

	if (containerPtr->parentPtr == NULL ||
	    parentInterp != interp) {
	    Tcl_DStringAppendElement(&dString, "");
	} else {
	    Tcl_DStringAppendElement(&dString,
		    containerPtr->parentPtr->pathName);
	}

	/*
	 * On X11 embedded is a wrapper, which does not exist on macOS.
	 */

	Tcl_DStringAppendElement(&dString, "");

	/*
	 * Embedded window pathName
	 */

	if (containerPtr->embeddedPtr == NULL ||
	    embeddedInterp != interp) {
	    Tcl_DStringAppendElement(&dString, "");
	} else {
	    Tcl_DStringAppendElement(&dString,
		    containerPtr->embeddedPtr->pathName);
	}
................................................................................
    Container *containerPtr;
    Tk_ErrorHandler errHandler;

    if (!firstContainerPtr) {
	/*
	 * When the interpreter is being dismantled this can be nil.
	 */

	return;
    }

    /*
     * Ignore any X protocol errors that happen in this procedure (almost any
     * operation could fail, for example, if the embedded application has
     * deleted its window).
................................................................................

static void
EmbedActivateProc(
    ClientData clientData,	/* Token for container window. */
    XEvent *eventPtr)		/* ResizeRequest event. */
{
    Container *containerPtr = clientData;

    if (containerPtr->embeddedPtr != NULL) {
	if (eventPtr->type == ActivateNotify) {
	    TkGenerateActivateEvents(containerPtr->embeddedPtr,1);
	} else if (eventPtr->type == DeactivateNotify) {
	    TkGenerateActivateEvents(containerPtr->embeddedPtr,0);
	}
    }
................................................................................
    int width, int height)	/* Size that the child has requested. */
{
    TkWindow *winPtr = containerPtr->parentPtr;

    /*
     * Forward the requested size into our geometry management hierarchy via
     * the container window. We need to send a Configure event back to the
     * embedded application if we decide not to honor its request; to make this
     * happen, process all idle event handlers synchronously here (so that the
     * geometry managers have had a chance to do whatever they want to do), and
     * if the window's size didn't change then generate a configure event.

     */

    Tk_GeometryRequest((Tk_Window) winPtr, width, height);
    while (Tcl_DoOneEvent(TCL_IDLE_EVENTS)) {
	/* Empty loop body. */
    }
    if ((winPtr->changes.width != width)
................................................................................
 *
 * EmbedSendConfigure --
 *
 *	This is currently a stub. It is called to notify an embedded
 *	application of its current size and location. This procedure is called
 *	when the embedded application made a geometry request that we did not
 *	grant, so that the embedded application knows that its geometry didn't
 *	change after all. It is a response to ConfigureRequest events, which we
 *	do not currently synthesize on the Mac
 *
 * Results:
 *	None.
 *
 * Side effects:
 *	None.
 *
................................................................................
	     * Fabricate an event to do this.
	     */

	    if (containerPtr->parentPtr != NULL &&
		    containerPtr->parentPtr->flags & TK_BOTH_HALVES) {
		XEvent event;

		event.xany.serial = LastKnownRequestProcessed(
			Tk_Display(containerPtr->parentPtr));
		event.xany.send_event = False;
		event.xany.display = Tk_Display(containerPtr->parentPtr);

		event.xany.type = DestroyNotify;
		event.xany.window = containerPtr->parent;
		event.xdestroywindow.event = containerPtr->parent;
		Tk_QueueWindowEvent(&event, TCL_QUEUE_HEAD);

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/*
 * tkMacOSXFont.c --
 *
 *	Contains the Macintosh implementation of the platform-independant
 *	font package interface.
 *
 * Copyright 2002-2004 Benjamin Riefenstahl, [email protected]
 * Copyright (c) 2006-2009 Daniel A. Steffen <[email protected]>
 * Copyright 2008-2009, Apple Inc.
 *
 * See the file "license.terms" for information on usage and redistribution
 * of this file, and for a DISCLAIMER OF ALL WARRANTIES.
................................................................................

/*
 * The following structure represents our Macintosh-specific implementation
 * of a font object.
 */

typedef struct {
    TkFont font;		/* Stuff used by generic font package. Must
				 * be first in structure. */

    NSFont *nsFont;
    NSDictionary *nsAttributes;
} MacFont;

/*
 * The names for our "native" fonts.
 */
................................................................................
};
#undef ThemeFont

static int antialiasedTextEnabled = -1;
static NSCharacterSet *whitespaceCharacterSet = nil;
static NSCharacterSet *lineendingCharacterSet = nil;

static void GetTkFontAttributesForNSFont(NSFont *nsFont,
	TkFontAttributes *faPtr);
static NSFont *FindNSFont(const char *familyName, NSFontTraitMask traits,

	NSInteger weight, CGFloat size, int fallbackToDefault);

static void InitFont(NSFont *nsFont, const TkFontAttributes *reqFaPtr,
	MacFont * fontPtr);
static int CreateNamedSystemFont(Tcl_Interp *interp, Tk_Window tkwin,

	const char* name, TkFontAttributes *faPtr);
static void DrawCharsInContext(Display *display, Drawable drawable, GC gc,
	Tk_Font tkfont, const char *source, int numBytes, int rangeStart,

	int rangeLength, int x, int y, double angle);

#pragma mark -
#pragma mark Font Helpers:

#define GetNSFontTraitsFromTkFontAttributes(faPtr) \
	((faPtr)->weight == TK_FW_BOLD ? NSBoldFontMask : NSUnboldFontMask) | \
	((faPtr)->slant == TK_FS_ITALIC ? NSItalicFontMask : NSUnitalicFontMask)
................................................................................
    NSDictionary *nsAttributes;
    NSRect bounds;
    CGFloat kern = 0.0;
    NSFontRenderingMode renderingMode = NSFontDefaultRenderingMode;
    int ascent, descent/*, dontAA*/;
    static const UniChar ch[] = {'.', 'W', ' ', 0xc4, 0xc1, 0xc2, 0xc3, 0xc7};
			/* ., W, Space, Auml, Aacute, Acirc, Atilde, Ccedilla */
    #define nCh (sizeof(ch) / sizeof(UniChar))
    CGGlyph glyphs[nCh];
    CGRect boundingRects[nCh];

    fontPtr->font.fid = (Font) fontPtr;
    faPtr = &fontPtr->font.fa;
    if (reqFaPtr) {
	*faPtr = *reqFaPtr;
    } else {
	TkInitFontAttributes(faPtr);
    }
    fontPtr->nsFont = nsFont;


    // some don't like antialiasing on fixed-width even if bigger than limit


    // dontAA = [nsFont isFixedPitch] && fontPtr->font.fa.size <= 10;
    if (antialiasedTextEnabled >= 0/* || dontAA*/) {
	renderingMode = (antialiasedTextEnabled == 0/* || dontAA*/) ?
		NSFontIntegerAdvancementsRenderingMode :
		NSFontAntialiasedRenderingMode;
    }
    nsFont = [nsFont screenFontWithRenderingMode:renderingMode];
................................................................................
	    [NSNumber numberWithInt:faPtr->overstrike ?
		NSUnderlineStyleSingle|NSUnderlinePatternSolid :
		NSUnderlineStyleNone], NSStrikethroughStyleAttributeName,
	    [NSNumber numberWithInt:fmPtr->fixed ? 0 : 1],
		NSLigatureAttributeName,
	    [NSNumber numberWithDouble:kern], NSKernAttributeName, nil];
    fontPtr->nsAttributes = [nsAttributes retain];
    #undef nCh
}
 
/*
 *-------------------------------------------------------------------------
 *
 * CreateNamedSystemFont --
 *
................................................................................
{
    Tcl_Interp *interp = mainPtr->interp;
    Tk_Window tkwin = (Tk_Window) mainPtr->winPtr;
    const struct SystemFontMapEntry *systemFont = systemFontMap;
    NSFont *nsFont;
    TkFontAttributes fa;
    NSMutableCharacterSet *cs;

    /* Since we called before TkpInit, we need our own autorelease pool. */

    NSAutoreleasePool *pool = [NSAutoreleasePool new];


    /* force this for now */

    if (!mainPtr->winPtr->mainPtr) {
	mainPtr->winPtr->mainPtr = mainPtr;
    }
    while (systemFont->systemName) {
	nsFont = (NSFont*) CTFontCreateUIFontForLanguage(
		HIThemeGetUIFontType(systemFont->id), 0, NULL);
	if (nsFont) {
................................................................................
 *---------------------------------------------------------------------------
 *
 * TkpGetNativeFont --
 *
 *	Map a platform-specific native font name to a TkFont.
 *
 * Results:
 *	The return value is a pointer to a TkFont that represents the
 *	native font. If a native font by the given name could not be
 *	found, the return value is NULL.
 *
 *	Every call to this procedure returns a new TkFont structure, even
 *	if the name has already been seen before. The caller should call
 *	TkpDeleteFont() when the font is no longer needed.
 *
 *	The caller is responsible for initializing the memory associated
 *	with the generic TkFont when this function returns and releasing
 *	the contents of the generics TkFont before calling TkpDeleteFont().
 *
 * Side effects:
 *	None.
 *
 *---------------------------------------------------------------------------
 */

................................................................................
    } else if (strcmp(name, APPLFONT_NAME) == 0) {
	themeFontId = kThemeApplicationFont;
    } else if (strcmp(name, MENUITEMFONT_NAME) == 0) {
	themeFontId = kThemeMenuItemFont;
    } else {
	return NULL;
    }
    ctFont = CTFontCreateUIFontForLanguage(HIThemeGetUIFontType(
	    themeFontId), 0, NULL);
    if (ctFont) {
	fontPtr = ckalloc(sizeof(MacFont));
	InitFont((NSFont*) ctFont, NULL, fontPtr);
    }

    return (TkFont *) fontPtr;
}
................................................................................
 *
 * TkpGetFontFromAttributes --
 *
 *	Given a desired set of attributes for a font, find a font with the
 *	closest matching attributes.
 *
 * Results:
 *	The return value is a pointer to a TkFont that represents the font
 *	with the desired attributes. If a font with the desired attributes
 *	could not be constructed, some other font will be substituted
 *	automatically.
 *
 *	Every call to this procedure returns a new TkFont structure, even
 *	if the specified attributes have already been seen before. The
 *	caller should call TkpDeleteFont() to free the platform- specific
 *	data when the font is no longer needed.
 *
 *	The caller is responsible for initializing the memory associated
 *	with the generic TkFont when this function returns and releasing
 *	the contents of the generic TkFont before calling TkpDeleteFont().
 *
 * Side effects:
 *	None.
 *
 *---------------------------------------------------------------------------
 */

TkFont *
TkpGetFontFromAttributes(
    TkFont *tkFontPtr,		/* If non-NULL, store the information in this
				 * existing TkFont structure, rather than
				 * allocating a new structure to hold the
				 * font; the existing contents of the font
				 * will be released. If NULL, a new TkFont
				 * structure is allocated. */
    Tk_Window tkwin,		/* For display where font will be used. */
    const TkFontAttributes *faPtr)
				/* Set of attributes to match. */
{
    MacFont *fontPtr;
    int points = (int)(TkFontGetPoints(tkwin, faPtr->size) + 0.5);
    NSFontTraitMask traits = GetNSFontTraitsFromTkFontAttributes(faPtr);
    NSInteger weight = (faPtr->weight == TK_FW_BOLD ? 9 : 5);
    NSFont *nsFont;

    nsFont = FindNSFont(faPtr->family, traits, weight, points, 0);
    if (!nsFont) {
	const char *const *aliases = TkFontGetAliasList(faPtr->family);
................................................................................
 
/*
 *---------------------------------------------------------------------------
 *
 * TkpDeleteFont --
 *
 *	Called to release a font allocated by TkpGetNativeFont() or
 *	TkpGetFontFromAttributes(). The caller should have already
 *	released the fields of the TkFont that are used exclusively by the
 *	generic TkFont code.
 *
 * Results:
 *	TkFont is deallocated.
 *
 * Side effects:
 *	None.
 *
................................................................................
}
 
/*
 *---------------------------------------------------------------------------
 *
 * TkpGetFontFamilies --
 *
 *	Return information about the font families that are available on
 *	the display of the given window.
 *
 * Results:
 *	Modifies interp's result object to hold a list of all the available
 *	font families.
 *
 * Side effects:
 *	None.
................................................................................
}
 
/*
 *-------------------------------------------------------------------------
 *
 * TkpGetSubFonts --
 *
 *	A function used by the testing package for querying the actual
 *	screen fonts that make up a font object.
 *
 * Results:
 *	Modifies interp's result object to hold a list containing the names
 *	of the screen fonts that make up the given font object.
 *
 * Side effects:
 *	None.
 *
 *-------------------------------------------------------------------------
 */

................................................................................
}
 
/*
 *----------------------------------------------------------------------
 *
 * TkpGetFontAttrsForChar --
 *
 *	Retrieve the font attributes of the actual font used to render a
 *	given character.
 *
 * Results:
 *	None.
 *
 * Side effects:
 *	The font attributes are stored in *faPtr.
 *
................................................................................
 *	that TkpDrawCharsInContext() will be used to actually display the
 *	characters.
 *
 *	This one is almost the same as Tk_MeasureChars(), but with access to
 *	all the characters on the line for context.
 *
 * Results:
 *	The return value is the number of bytes from source that
 *	fit into the span that extends from 0 to maxLength. *lengthPtr is
 *	filled with the x-coordinate of the right edge of the last
 *	character that did fit.
 *
 * Side effects:
 *	None.
 *
 *---------------------------------------------------------------------------
 */

................................................................................
				 * character that would cross this x-position.
				 * If < 0, then line length is unbounded and
				 * the flags argument is ignored. */
    int flags,			/* Various flag bits OR-ed together:
				 * TK_PARTIAL_OK means include the last char
				 * which only partially fits on this line.
				 * TK_WHOLE_WORDS means stop on a word
				 * boundary, if possible. TK_AT_LEAST_ONE
				 * means return at least one character even
				 * if no characters fit.  If TK_WHOLE_WORDS
				 * and TK_AT_LEAST_ONE are set and the first
				 * word doesn't fit, we return at least one
				 * character or whatever characters fit into
				 * maxLength.  TK_ISOLATE_END means that the
				 * last character should not be considered in
				 * context with the rest of the string (used
				 * for breaking lines). */
    int *lengthPtr)		/* Filled with x-location just after the
				 * terminating character. */
................................................................................
		whitespaceCharacterSet : lineendingCharacterSet;
	while (index > start &&
		[cs characterIsMember:[string characterAtIndex:(index - 1)]]) {
	    index--;
	}

        /*
         * If there is no line breakpoint in the source string between
         * its start and the index position that fits in maxWidth, then
         * CTTypesetterSuggestLineBreak() returns that very last index.
         * However if the TK_WHOLE_WORDS flag is set, we want to break
         * at a word boundary. In this situation, unless TK_AT_LEAST_ONE
         * is set, we must report that zero chars actually fit (in other
         * words the smallest word of the source string is still larger
         * than maxWidth).
         */

        if ((index >= start) && (index < len) &&
                (flags & TK_WHOLE_WORDS) && !(flags & TK_AT_LEAST_ONE) &&
                ![cs characterIsMember:[string characterAtIndex:index]]) {
            index = start;
        }
................................................................................
	if (width < maxWidth && (flags & TK_PARTIAL_OK) && index < len) {
	    range.length = ++index;
	    line = CTTypesetterCreateLine(typesetter, range);
	    width = CTLineGetTypographicBounds(line, NULL, NULL, NULL);
	    CFRelease(line);
	}


        /* The call to CTTypesetterSuggestClusterBreak above will always
           return at least one character regardless of whether it exceeded
           it or not.  Clean that up now. */


	while (width > maxWidth && !(flags & TK_PARTIAL_OK)
		&& index > start+(flags & TK_AT_LEAST_ONE)) {
	    range.length = --index;
	    line = CTTypesetterCreateLine(typesetter, range);
	    width = CTLineGetTypographicBounds(line, NULL, NULL, NULL);
	    CFRelease(line);
	}
................................................................................
 *
 *	Draw a string of characters on the screen.
 *
 *	With ATSUI we need the line context to do this right, so we have the
 *	actual implementation in TkpDrawCharsInContext().
 *
 * Results:
  *	None.
 *
 * Side effects:
 *	Information gets drawn on the screen.
 *
 *---------------------------------------------------------------------------
 */

................................................................................
    Drawable drawable,		/* Window or pixmap in which to draw. */
    GC gc,			/* Graphics context for drawing characters. */
    Tk_Font tkfont,		/* Font in which characters will be drawn; must
				 * be the same as font used in GC. */
    const char *source,		/* UTF-8 string to be displayed. Need not be
				 * '\0' terminated. All Tk meta-characters
				 * (tabs, control characters, and newlines)
				 * should be stripped out of the string that
				 * is passed to this function. If they are not
				 * stripped out, they will be displayed as
				 * regular printing characters. */
    int numBytes,		/* Number of bytes in string. */
    int x, int y)		/* Coordinates at which to place origin of the
				 * string when drawing. */
{
    DrawCharsInContext(display, drawable, gc, tkfont, source, numBytes,
................................................................................
    Drawable drawable,		/* Window or pixmap in which to draw. */
    GC gc,			/* Graphics context for drawing characters. */
    Tk_Font tkfont,		/* Font in which characters will be drawn;
				 * must be the same as font used in GC. */
    const char *source,		/* UTF-8 string to be displayed. Need not be
				 * '\0' terminated. All Tk meta-characters
				 * (tabs, control characters, and newlines)
				 * should be stripped out of the string that
				 * is passed to this function. If they are not
				 * stripped out, they will be displayed as
				 * regular printing characters. */
    int numBytes,		/* Number of bytes in string. */
    double x, double y,		/* Coordinates at which to place origin of
				 * string when drawing. */
    double angle)		/* What angle to put text at, in degrees. */
{
................................................................................
    Drawable drawable,		/* Window or pixmap in which to draw. */
    GC gc,			/* Graphics context for drawing characters. */
    Tk_Font tkfont,		/* Font in which characters will be drawn; must
				 * be the same as font used in GC. */
    const char * source,	/* UTF-8 string to be displayed. Need not be
				 * '\0' terminated. All Tk meta-characters
				 * (tabs, control characters, and newlines)
				 * should be stripped out of the string that
				 * is passed to this function. If they are not
				 * stripped out, they will be displayed as
				 * regular printing characters. */
    int numBytes,		/* Number of bytes in string. */
    int rangeStart,		/* Index of first byte to draw. */
    int rangeLength,		/* Length of range to draw in bytes. */
    int x, int y)		/* Coordinates at which to place origin of the
				 * whole (not just the range) string when
................................................................................
    Drawable drawable,		/* Window or pixmap in which to draw. */
    GC gc,			/* Graphics context for drawing characters. */
    Tk_Font tkfont,		/* Font in which characters will be drawn; must
				 * be the same as font used in GC. */
    const char * source,	/* UTF-8 string to be displayed. Need not be
				 * '\0' terminated. All Tk meta-characters
				 * (tabs, control characters, and newlines)
				 * should be stripped out of the string that
				 * is passed to this function. If they are not
				 * stripped out, they will be displayed as
				 * regular printing characters. */
    int numBytes,		/* Number of bytes in string. */
    int rangeStart,		/* Index of first byte to draw. */
    int rangeLength,		/* Length of range to draw in bytes. */
    int x, int y,		/* Coordinates at which to place origin of the
				 * whole (not just the range) string when
................................................................................
	return;
    }
    string = [[NSString alloc] initWithBytesNoCopy:(void*)source
		length:numBytes encoding:NSUTF8StringEncoding freeWhenDone:NO];
    if (!string) {
	return;
    }

    context = drawingContext.context;
    fg = TkMacOSXCreateCGColor(gc, gc->foreground);
    attributes = [fontPtr->nsAttributes mutableCopy];
    [attributes setObject:(id)fg forKey:(id)kCTForegroundColorAttributeName];
    CFRelease(fg);
    nsFont = [attributes objectForKey:NSFontAttributeName];
    [nsFont setInContext:[NSGraphicsContext graphicsContextWithGraphicsPort:
................................................................................
    }
    CGContextConcatCTM(context, t);
    CGContextSetTextPosition(context, x, y);
    start = Tcl_NumUtfChars(source, rangeStart);
    len = Tcl_NumUtfChars(source, rangeStart + rangeLength);
    if (start > 0) {
	CGRect clipRect = CGRectInfinite, startBounds;

	line = CTTypesetterCreateLine(typesetter, CFRangeMake(0, start));
	startBounds = CTLineGetImageBounds(line, context);
	CFRelease(line);
	clipRect.origin.x = startBounds.origin.x + startBounds.size.width;
	CGContextClipToRect(context, clipRect);
    }
    line = CTTypesetterCreateLine(typesetter, CFRangeMake(0, len));
................................................................................
    if (nsFont && familyName) {
	NSFontTraitMask traits = [[NSFontManager sharedFontManager]
		traitsOfFont:nsFont];
	id underline = [nsAttributes objectForKey:
		NSUnderlineStyleAttributeName];
	id strikethrough = [nsAttributes objectForKey:
		NSStrikethroughStyleAttributeName];

	objv[i++] = Tcl_NewStringObj(familyName, -1);
	objv[i++] = Tcl_NewWideIntObj([nsFont pointSize]);
#define S(s) Tcl_NewStringObj(STRINGIFY(s),(int)(sizeof(STRINGIFY(s))-1))
	objv[i++] = (traits & NSBoldFontMask)	? S(bold)   : S(normal);
	objv[i++] = (traits & NSItalicFontMask)	? S(italic) : S(roman);
	if ([underline respondsToSelector:@selector(intValue)] &&
		([underline intValue] & (NSUnderlineStyleSingle |
		NSUnderlineStyleThick | NSUnderlineStyleDouble))) {
	    objv[i++] = S(underline);
	}
................................................................................
 
/*
 *----------------------------------------------------------------------
 *
 * TkMacOSXUseAntialiasedText --
 *
 *	Enables or disables application-wide use of antialiased text (where
 *	available). Sets up a linked Tcl global variable to allow
 *	disabling of antialiased text from tcl.

 *	The possible values for this variable are:
 *
 *	-1 - Use system default as configurable in "System Prefs" -> "General".
 *	 0 - Unconditionally disable antialiasing.
 *	 1 - Unconditionally enable antialiasing.
 *
 * Results:


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/*
 * tkMacOSXFont.c --
 *
 *	Contains the Macintosh implementation of the platform-independant font
 *	package interface.
 *
 * Copyright 2002-2004 Benjamin Riefenstahl, [email protected]
 * Copyright (c) 2006-2009 Daniel A. Steffen <[email protected]>
 * Copyright 2008-2009, Apple Inc.
 *
 * See the file "license.terms" for information on usage and redistribution
 * of this file, and for a DISCLAIMER OF ALL WARRANTIES.
................................................................................

/*
 * The following structure represents our Macintosh-specific implementation
 * of a font object.
 */

typedef struct {
    TkFont font;		/* Stuff used by generic font package. Must be
				 * first in structure. */

    NSFont *nsFont;
    NSDictionary *nsAttributes;
} MacFont;

/*
 * The names for our "native" fonts.
 */
................................................................................
};
#undef ThemeFont

static int antialiasedTextEnabled = -1;
static NSCharacterSet *whitespaceCharacterSet = nil;
static NSCharacterSet *lineendingCharacterSet = nil;

static void		GetTkFontAttributesForNSFont(NSFont *nsFont,
			    TkFontAttributes *faPtr);
static NSFont *		FindNSFont(const char *familyName,
			    NSFontTraitMask traits, NSInteger weight,
			    CGFloat size, int fallbackToDefault);
static void		InitFont(NSFont *nsFont,
			    const TkFontAttributes *reqFaPtr,
			    MacFont *fontPtr);
static int		CreateNamedSystemFont(Tcl_Interp *interp,
			    Tk_Window tkwin, const char *name,
			    TkFontAttributes *faPtr);
static void		DrawCharsInContext(Display *display, Drawable drawable,
			    GC gc, Tk_Font tkfont, const char *source,
			    int numBytes, int rangeStart, int rangeLength,
			    int x, int y, double angle);

#pragma mark -
#pragma mark Font Helpers:

#define GetNSFontTraitsFromTkFontAttributes(faPtr) \
	((faPtr)->weight == TK_FW_BOLD ? NSBoldFontMask : NSUnboldFontMask) | \
	((faPtr)->slant == TK_FS_ITALIC ? NSItalicFontMask : NSUnitalicFontMask)
................................................................................
    NSDictionary *nsAttributes;
    NSRect bounds;
    CGFloat kern = 0.0;
    NSFontRenderingMode renderingMode = NSFontDefaultRenderingMode;
    int ascent, descent/*, dontAA*/;
    static const UniChar ch[] = {'.', 'W', ' ', 0xc4, 0xc1, 0xc2, 0xc3, 0xc7};
			/* ., W, Space, Auml, Aacute, Acirc, Atilde, Ccedilla */
#define nCh	(sizeof(ch) / sizeof(UniChar))
    CGGlyph glyphs[nCh];
    CGRect boundingRects[nCh];

    fontPtr->font.fid = (Font) fontPtr;
    faPtr = &fontPtr->font.fa;
    if (reqFaPtr) {
	*faPtr = *reqFaPtr;
    } else {
	TkInitFontAttributes(faPtr);
    }
    fontPtr->nsFont = nsFont;

    /*
     * Some don't like antialiasing on fixed-width even if bigger than limit
     */

    // dontAA = [nsFont isFixedPitch] && fontPtr->font.fa.size <= 10;
    if (antialiasedTextEnabled >= 0/* || dontAA*/) {
	renderingMode = (antialiasedTextEnabled == 0/* || dontAA*/) ?
		NSFontIntegerAdvancementsRenderingMode :
		NSFontAntialiasedRenderingMode;
    }
    nsFont = [nsFont screenFontWithRenderingMode:renderingMode];
................................................................................
	    [NSNumber numberWithInt:faPtr->overstrike ?
		NSUnderlineStyleSingle|NSUnderlinePatternSolid :
		NSUnderlineStyleNone], NSStrikethroughStyleAttributeName,
	    [NSNumber numberWithInt:fmPtr->fixed ? 0 : 1],
		NSLigatureAttributeName,
	    [NSNumber numberWithDouble:kern], NSKernAttributeName, nil];
    fontPtr->nsAttributes = [nsAttributes retain];
#undef nCh
}
 
/*
 *-------------------------------------------------------------------------
 *
 * CreateNamedSystemFont --
 *
................................................................................
{
    Tcl_Interp *interp = mainPtr->interp;
    Tk_Window tkwin = (Tk_Window) mainPtr->winPtr;
    const struct SystemFontMapEntry *systemFont = systemFontMap;
    NSFont *nsFont;
    TkFontAttributes fa;
    NSMutableCharacterSet *cs;
    /*
     * Since we called before TkpInit, we need our own autorelease pool.
     */
    NSAutoreleasePool *pool = [NSAutoreleasePool new];

    /*
     * Force this for now.
     */
    if (!mainPtr->winPtr->mainPtr) {
	mainPtr->winPtr->mainPtr = mainPtr;
    }
    while (systemFont->systemName) {
	nsFont = (NSFont*) CTFontCreateUIFontForLanguage(
		HIThemeGetUIFontType(systemFont->id), 0, NULL);
	if (nsFont) {
................................................................................
 *---------------------------------------------------------------------------
 *
 * TkpGetNativeFont --
 *
 *	Map a platform-specific native font name to a TkFont.
 *
 * Results:
 *	The return value is a pointer to a TkFont that represents the native
 *	font. If a native font by the given name could not be found, the return
 *	value is NULL.
 *
 *	Every call to this procedure returns a new TkFont structure, even if
 *	the name has already been seen before. The caller should call
 *	TkpDeleteFont() when the font is no longer needed.
 *
 *	The caller is responsible for initializing the memory associated with
 *	the generic TkFont when this function returns and releasing the
 *	contents of the generics TkFont before calling TkpDeleteFont().
 *
 * Side effects:
 *	None.
 *
 *---------------------------------------------------------------------------
 */

................................................................................
    } else if (strcmp(name, APPLFONT_NAME) == 0) {
	themeFontId = kThemeApplicationFont;
    } else if (strcmp(name, MENUITEMFONT_NAME) == 0) {
	themeFontId = kThemeMenuItemFont;
    } else {
	return NULL;
    }
    ctFont = CTFontCreateUIFontForLanguage(
	    HIThemeGetUIFontType(themeFontId), 0, NULL);
    if (ctFont) {
	fontPtr = ckalloc(sizeof(MacFont));
	InitFont((NSFont*) ctFont, NULL, fontPtr);
    }

    return (TkFont *) fontPtr;
}
................................................................................
 *
 * TkpGetFontFromAttributes --
 *
 *	Given a desired set of attributes for a font, find a font with the
 *	closest matching attributes.
 *
 * Results:
 *	The return value is a pointer to a TkFont that represents the font with
 *	the desired attributes. If a font with the desired attributes could not
 *	be constructed, some other font will be substituted automatically.

 *
 *	Every call to this procedure returns a new TkFont structure, even if
 *	the specified attributes have already been seen before. The caller
 *	should call TkpDeleteFont() to free the platform- specific data when
 *	the font is no longer needed.
 *
 *	The caller is responsible for initializing the memory associated with
 *	the generic TkFont when this function returns and releasing the
 *	contents of the generic TkFont before calling TkpDeleteFont().
 *
 * Side effects:
 *	None.
 *
 *---------------------------------------------------------------------------
 */

TkFont *
TkpGetFontFromAttributes(
    TkFont *tkFontPtr,		/* If non-NULL, store the information in this
				 * existing TkFont structure, rather than
				 * allocating a new structure to hold the font;
				 * the existing contents of the font will be
				 * released. If NULL, a new TkFont structure is
				 * allocated. */
    Tk_Window tkwin,		/* For display where font will be used. */
    const TkFontAttributes *faPtr)
				/* Set of attributes to match. */
{
    MacFont *fontPtr;
    int points = (int) (TkFontGetPoints(tkwin, faPtr->size) + 0.5);
    NSFontTraitMask traits = GetNSFontTraitsFromTkFontAttributes(faPtr);
    NSInteger weight = (faPtr->weight == TK_FW_BOLD ? 9 : 5);
    NSFont *nsFont;

    nsFont = FindNSFont(faPtr->family, traits, weight, points, 0);
    if (!nsFont) {
	const char *const *aliases = TkFontGetAliasList(faPtr->family);
................................................................................
 
/*
 *---------------------------------------------------------------------------
 *
 * TkpDeleteFont --
 *
 *	Called to release a font allocated by TkpGetNativeFont() or
 *	TkpGetFontFromAttributes(). The caller should have already released the
 *	fields of the TkFont that are used exclusively by the generic TkFont
 *	code.
 *
 * Results:
 *	TkFont is deallocated.
 *
 * Side effects:
 *	None.
 *
................................................................................
}
 
/*
 *---------------------------------------------------------------------------
 *
 * TkpGetFontFamilies --
 *
 *	Return information about the font families that are available on the
 *	display of the given window.
 *
 * Results:
 *	Modifies interp's result object to hold a list of all the available
 *	font families.
 *
 * Side effects:
 *	None.
................................................................................
}
 
/*
 *-------------------------------------------------------------------------
 *
 * TkpGetSubFonts --
 *
 *	A function used by the testing package for querying the actual screen
 *	fonts that make up a font object.
 *
 * Results:
 *	Modifies interp's result object to hold a list containing the names of
 *	the screen fonts that make up the given font object.
 *
 * Side effects:
 *	None.
 *
 *-------------------------------------------------------------------------
 */

................................................................................
}
 
/*
 *----------------------------------------------------------------------
 *
 * TkpGetFontAttrsForChar --
 *
 *	Retrieve the font attributes of the actual font used to render a given
 *	character.
 *
 * Results:
 *	None.
 *
 * Side effects:
 *	The font attributes are stored in *faPtr.
 *
................................................................................
 *	that TkpDrawCharsInContext() will be used to actually display the
 *	characters.
 *
 *	This one is almost the same as Tk_MeasureChars(), but with access to
 *	all the characters on the line for context.
 *
 * Results:
 *	The return value is the number of bytes from source that fit into the
 *	span that extends from 0 to maxLength. *lengthPtr is filled with the
 *	x-coordinate of the right edge of the last character that did fit.

 *
 * Side effects:
 *	None.
 *
 *---------------------------------------------------------------------------
 */

................................................................................
				 * character that would cross this x-position.
				 * If < 0, then line length is unbounded and
				 * the flags argument is ignored. */
    int flags,			/* Various flag bits OR-ed together:
				 * TK_PARTIAL_OK means include the last char
				 * which only partially fits on this line.
				 * TK_WHOLE_WORDS means stop on a word
				 * boundary, if possible. TK_AT_LEAST_ONE means
				 * return at least one character even if no
				 * characters fit.  If TK_WHOLE_WORDS and
				 * TK_AT_LEAST_ONE are set and the first word
				 * doesn't fit, we return at least one
				 * character or whatever characters fit into
				 * maxLength.  TK_ISOLATE_END means that the
				 * last character should not be considered in
				 * context with the rest of the string (used
				 * for breaking lines). */
    int *lengthPtr)		/* Filled with x-location just after the
				 * terminating character. */
................................................................................
		whitespaceCharacterSet : lineendingCharacterSet;
	while (index > start &&
		[cs characterIsMember:[string characterAtIndex:(index - 1)]]) {
	    index--;
	}

        /*
         * If there is no line breakpoint in the source string between its
         * start and the index position that fits in maxWidth, then
         * CTTypesetterSuggestLineBreak() returns that very last index.
         * However if the TK_WHOLE_WORDS flag is set, we want to break at a
         * word boundary. In this situation, unless TK_AT_LEAST_ONE is set, we
         * must report that zero chars actually fit (in other words the
         * smallest word of the source string is still larger than maxWidth).

         */

        if ((index >= start) && (index < len) &&
                (flags & TK_WHOLE_WORDS) && !(flags & TK_AT_LEAST_ONE) &&
                ![cs characterIsMember:[string characterAtIndex:index]]) {
            index = start;
        }
................................................................................
	if (width < maxWidth && (flags & TK_PARTIAL_OK) && index < len) {
	    range.length = ++index;
	    line = CTTypesetterCreateLine(typesetter, range);
	    width = CTLineGetTypographicBounds(line, NULL, NULL, NULL);
	    CFRelease(line);
	}

        /*
	 * The call to CTTypesetterSuggestClusterBreak above will always return
	 * at least one character regardless of whether it exceeded it or not.
	 * Clean that up now.
	 */

	while (width > maxWidth && !(flags & TK_PARTIAL_OK)
		&& index > start+(flags & TK_AT_LEAST_ONE)) {
	    range.length = --index;
	    line = CTTypesetterCreateLine(typesetter, range);
	    width = CTLineGetTypographicBounds(line, NULL, NULL, NULL);
	    CFRelease(line);
	}
................................................................................
 *
 *	Draw a string of characters on the screen.
 *
 *	With ATSUI we need the line context to do this right, so we have the
 *	actual implementation in TkpDrawCharsInContext().
 *
 * Results:
 *	None.
 *
 * Side effects:
 *	Information gets drawn on the screen.
 *
 *---------------------------------------------------------------------------
 */

................................................................................
    Drawable drawable,		/* Window or pixmap in which to draw. */
    GC gc,			/* Graphics context for drawing characters. */
    Tk_Font tkfont,		/* Font in which characters will be drawn; must
				 * be the same as font used in GC. */
    const char *source,		/* UTF-8 string to be displayed. Need not be
				 * '\0' terminated. All Tk meta-characters
				 * (tabs, control characters, and newlines)
				 * should be stripped out of the string that is
				 * passed to this function. If they are not
				 * stripped out, they will be displayed as
				 * regular printing characters. */
    int numBytes,		/* Number of bytes in string. */
    int x, int y)		/* Coordinates at which to place origin of the
				 * string when drawing. */
{
    DrawCharsInContext(display, drawable, gc, tkfont, source, numBytes,
................................................................................
    Drawable drawable,		/* Window or pixmap in which to draw. */
    GC gc,			/* Graphics context for drawing characters. */
    Tk_Font tkfont,		/* Font in which characters will be drawn;
				 * must be the same as font used in GC. */
    const char *source,		/* UTF-8 string to be displayed. Need not be
				 * '\0' terminated. All Tk meta-characters
				 * (tabs, control characters, and newlines)
				 * should be stripped out of the string that is
				 * passed to this function. If they are not
				 * stripped out, they will be displayed as
				 * regular printing characters. */
    int numBytes,		/* Number of bytes in string. */
    double x, double y,		/* Coordinates at which to place origin of
				 * string when drawing. */
    double angle)		/* What angle to put text at, in degrees. */
{
................................................................................
    Drawable drawable,		/* Window or pixmap in which to draw. */
    GC gc,			/* Graphics context for drawing characters. */
    Tk_Font tkfont,		/* Font in which characters will be drawn; must
				 * be the same as font used in GC. */
    const char * source,	/* UTF-8 string to be displayed. Need not be
				 * '\0' terminated. All Tk meta-characters
				 * (tabs, control characters, and newlines)
				 * should be stripped out of the string that is
				 * passed to this function. If they are not
				 * stripped out, they will be displayed as
				 * regular printing characters. */
    int numBytes,		/* Number of bytes in string. */
    int rangeStart,		/* Index of first byte to draw. */
    int rangeLength,		/* Length of range to draw in bytes. */
    int x, int y)		/* Coordinates at which to place origin of the
				 * whole (not just the range) string when
................................................................................
    Drawable drawable,		/* Window or pixmap in which to draw. */
    GC gc,			/* Graphics context for drawing characters. */
    Tk_Font tkfont,		/* Font in which characters will be drawn; must
				 * be the same as font used in GC. */
    const char * source,	/* UTF-8 string to be displayed. Need not be
				 * '\0' terminated. All Tk meta-characters
				 * (tabs, control characters, and newlines)
				 * should be stripped out of the string that is
				 * passed to this function. If they are not
				 * stripped out, they will be displayed as
				 * regular printing characters. */
    int numBytes,		/* Number of bytes in string. */
    int rangeStart,		/* Index of first byte to draw. */
    int rangeLength,		/* Length of range to draw in bytes. */
    int x, int y,		/* Coordinates at which to place origin of the
				 * whole (not just the range) string when
................................................................................
	return;
    }
    string = [[NSString alloc] initWithBytesNoCopy:(void*)source
		length:numBytes encoding:NSUTF8StringEncoding freeWhenDone:NO];
    if (!string) {
	return;
    }

    context = drawingContext.context;
    fg = TkMacOSXCreateCGColor(gc, gc->foreground);
    attributes = [fontPtr->nsAttributes mutableCopy];
    [attributes setObject:(id)fg forKey:(id)kCTForegroundColorAttributeName];
    CFRelease(fg);
    nsFont = [attributes objectForKey:NSFontAttributeName];
    [nsFont setInContext:[NSGraphicsContext graphicsContextWithGraphicsPort:
................................................................................
    }
    CGContextConcatCTM(context, t);
    CGContextSetTextPosition(context, x, y);
    start = Tcl_NumUtfChars(source, rangeStart);
    len = Tcl_NumUtfChars(source, rangeStart + rangeLength);
    if (start > 0) {
	CGRect clipRect = CGRectInfinite, startBounds;

	line = CTTypesetterCreateLine(typesetter, CFRangeMake(0, start));
	startBounds = CTLineGetImageBounds(line, context);
	CFRelease(line);
	clipRect.origin.x = startBounds.origin.x + startBounds.size.width;
	CGContextClipToRect(context, clipRect);
    }
    line = CTTypesetterCreateLine(typesetter, CFRangeMake(0, len));
................................................................................
    if (nsFont && familyName) {
	NSFontTraitMask traits = [[NSFontManager sharedFontManager]
		traitsOfFont:nsFont];
	id underline = [nsAttributes objectForKey:
		NSUnderlineStyleAttributeName];
	id strikethrough = [nsAttributes objectForKey:
		NSStrikethroughStyleAttributeName];

	objv[i++] = Tcl_NewStringObj(familyName, -1);
	objv[i++] = Tcl_NewWideIntObj([nsFont pointSize]);
#define S(s)    Tcl_NewStringObj(STRINGIFY(s), (int)(sizeof(STRINGIFY(s))-1))
	objv[i++] = (traits & NSBoldFontMask)	? S(bold)   : S(normal);
	objv[i++] = (traits & NSItalicFontMask)	? S(italic) : S(roman);
	if ([underline respondsToSelector:@selector(intValue)] &&
		([underline intValue] & (NSUnderlineStyleSingle |
		NSUnderlineStyleThick | NSUnderlineStyleDouble))) {
	    objv[i++] = S(underline);
	}
................................................................................
 
/*
 *----------------------------------------------------------------------
 *
 * TkMacOSXUseAntialiasedText --
 *
 *	Enables or disables application-wide use of antialiased text (where
 *	available). Sets up a linked Tcl global variable to allow disabling of
 *	antialiased text from Tcl.
 *
 *	The possible values for this variable are:
 *
 *	-1 - Use system default as configurable in "System Prefs" -> "General".
 *	 0 - Unconditionally disable antialiasing.
 *	 1 - Unconditionally enable antialiasing.
 *
 * Results:

Changes to macosx/tkMacOSXHLEvents.c.

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				 * AppleEvent */
} KillEvent;

/*
 * Static functions used only in this file.
 */

static void tkMacOSXProcessFiles(NSAppleEventDescriptor* event,
				 NSAppleEventDescriptor* replyEvent,
				 Tcl_Interp *interp,
				 const char* procedure);
static int  MissedAnyParameters(const AppleEvent *theEvent);
static int  ReallyKillMe(Tcl_Event *eventPtr, int flags);



#pragma mark TKApplication(TKHLEvents)

@implementation TKApplication(TKHLEvents)
- (void) terminate: (id) sender
{
    [self handleQuitApplicationEvent:Nil withReplyEvent:Nil];
................................................................................
	Tcl_QueueEvent((Tcl_Event *) eventPtr, TCL_QUEUE_HEAD);
    }
}

- (void) handleOpenApplicationEvent: (NSAppleEventDescriptor *)event
    withReplyEvent: (NSAppleEventDescriptor *)replyEvent
{
   Tcl_Interp *interp = _eventInterp;

    if (interp &&
	Tcl_FindCommand(_eventInterp, "::tk::mac::OpenApplication", NULL, 0)){
	int code = Tcl_EvalEx(_eventInterp, "::tk::mac::OpenApplication",
			      -1, TCL_EVAL_GLOBAL);
	if (code != TCL_OK) {
	    Tcl_BackgroundException(_eventInterp, code);
	}
    }
}

- (void) handleReopenApplicationEvent: (NSAppleEventDescriptor *)event
    withReplyEvent: (NSAppleEventDescriptor *)replyEvent
{
    [NSApp activateIgnoringOtherApps: YES];
    if (_eventInterp && Tcl_FindCommand(_eventInterp,
	    "::tk::mac::ReopenApplication", NULL, 0)) {
	int code = Tcl_EvalEx(_eventInterp, "::tk::mac::ReopenApplication",
			      -1, TCL_EVAL_GLOBAL);
	if (code != TCL_OK){
	    Tcl_BackgroundException(_eventInterp, code);
	}
    }
}

- (void) handleShowPreferencesEvent: (NSAppleEventDescriptor *)event
    withReplyEvent: (NSAppleEventDescriptor *)replyEvent
{
    if (_eventInterp &&
	    Tcl_FindCommand(_eventInterp, "::tk::mac::ShowPreferences", NULL, 0)){
	int code = Tcl_EvalEx(_eventInterp, "::tk::mac::ShowPreferences",
			      -1, TCL_EVAL_GLOBAL);
	if (code != TCL_OK) {
	    Tcl_BackgroundException(_eventInterp, code);
	}
    }
}

- (void) handleOpenDocumentsEvent: (NSAppleEventDescriptor *)event
    withReplyEvent: (NSAppleEventDescriptor *)replyEvent
{
    tkMacOSXProcessFiles(event, replyEvent, _eventInterp, "::tk::mac::OpenDocument");

}

- (void) handlePrintDocumentsEvent: (NSAppleEventDescriptor *)event
    withReplyEvent: (NSAppleEventDescriptor *)replyEvent
{
    tkMacOSXProcessFiles(event, replyEvent, _eventInterp, "::tk::mac::PrintDocument");

}

- (void) handleDoScriptEvent: (NSAppleEventDescriptor *)event
    withReplyEvent: (NSAppleEventDescriptor *)replyEvent
{
    OSStatus err;
    const AEDesc *theDesc = nil;
................................................................................

    theDesc = [event aeDesc];
    if (theDesc == nil) {
	return;
    }

    err = AEGetParamPtr(theDesc, keyDirectObject, typeWildCard, &initialType,
			NULL, 0, NULL);
    if (err != noErr) {
	sprintf(errString, "AEDoScriptHandler: GetParamDesc error %d", (int)err);
	AEPutParamPtr((AppleEvent*)[replyEvent aeDesc], keyErrorString, typeChar,
		      errString, strlen(errString));
	return;
    }

    if (MissedAnyParameters((AppleEvent*)theDesc)) {
    	sprintf(errString, "AEDoScriptHandler: extra parameters");
    	AEPutParamPtr((AppleEvent*)[replyEvent aeDesc], keyErrorString, typeChar,
    		      errString, strlen(errString));
    	return;
    }


    if (initialType == typeFileURL || initialType == typeAlias) {
	/*
	 * The descriptor can be coerced to a file url.  Source the file, or
	 * pass the path as a string argument to ::tk::mac::DoScriptFile if
	 * that procedure exists.
	 */

	err = AEGetParamPtr(theDesc, keyDirectObject, typeFileURL, &type,
			    (Ptr) URLBuffer, URL_MAX_LENGTH, &actual);
	if (err == noErr && actual > 0){
	    URLBuffer[actual] = '\0';
	    NSString *urlString = [NSString stringWithUTF8String:(char*)URLBuffer];
	    NSURL *fileURL = [NSURL URLWithString:urlString];
	    Tcl_DString command;

	    Tcl_DStringInit(&command);
	    if (Tcl_FindCommand(_eventInterp, "::tk::mac::DoScriptFile", NULL, 0)){
		Tcl_DStringAppend(&command, "::tk::mac::DoScriptFile", -1);
	    } else {
		Tcl_DStringAppend(&command, "source", -1);
	    }
	    Tcl_DStringAppendElement(&command, [[fileURL path] UTF8String]);
	    tclErr = Tcl_EvalEx(_eventInterp, Tcl_DStringValue(&command),
				 Tcl_DStringLength(&command), TCL_EVAL_GLOBAL);
	}
    } else if (noErr == AEGetParamPtr(theDesc, keyDirectObject, typeUTF8Text, &type,
			   NULL, 0, &actual)) {
	if (actual > 0) {
	    /*
	     * The descriptor can be coerced to UTF8 text.  Evaluate as Tcl, or
	     * or pass the text as a string argument to ::tk::mac::DoScriptText
	     * if that procedure exists.
	     */

	    char *data = ckalloc(actual + 1);

	    if (noErr == AEGetParamPtr(theDesc, keyDirectObject, typeUTF8Text, &type,
			    data, actual, NULL)) {
		if (Tcl_FindCommand(_eventInterp, "::tk::mac::DoScriptText", NULL, 0)){

		    Tcl_DString command;

		    Tcl_DStringInit(&command);
		    Tcl_DStringAppend(&command, "::tk::mac::DoScriptText", -1);
		    Tcl_DStringAppendElement(&command, data);
		    tclErr = Tcl_EvalEx(_eventInterp, Tcl_DStringValue(&command),

				 Tcl_DStringLength(&command), TCL_EVAL_GLOBAL);
		} else {
		    tclErr = Tcl_EvalEx(_eventInterp, data, actual, TCL_EVAL_GLOBAL);

		}
	    }
	    ckfree(data);
	}
    } else {
	/*
	 * The descriptor can not be coerced to a fileURL or UTF8 text.
................................................................................
	 */
	for (int i = 0; i < 4; i++) {
	    typeString[i] = ((char*)&initialType)[3-i];
	}
	typeString[4] = '\0';
	sprintf(errString, "AEDoScriptHandler: invalid script type '%s', "
		"must be coercable to 'furl' or 'utf8'", typeString);
	AEPutParamPtr((AppleEvent*)[replyEvent aeDesc], keyErrorString, typeChar, errString,
		      strlen(errString));
    }

    /*
     * If we ran some Tcl code, put the result in the reply.
     */

    if (tclErr >= 0) {
	int reslen;
	const char *result =
	    Tcl_GetStringFromObj(Tcl_GetObjResult(_eventInterp), &reslen);

	if (tclErr == TCL_OK) {
	    AEPutParamPtr((AppleEvent*)[replyEvent aeDesc], keyDirectObject, typeChar,
			  result, reslen);
	} else {
	    AEPutParamPtr((AppleEvent*)[replyEvent aeDesc], keyErrorString, typeChar,
			  result, reslen);
	    AEPutParamPtr((AppleEvent*)[replyEvent aeDesc], keyErrorNumber, typeSInt32,
			  (Ptr) &tclErr,sizeof(int));
	}
    }

    return;
}
@end

#pragma mark -


















/*
 *----------------------------------------------------------------------
 *
 * TkMacOSXProcessFiles --
 *
 *	Extract a list of fileURLs from an AppleEvent and call the specified
 *      procedure with the file paths as arguments.
................................................................................
    Size actual;
    long count, index;
    AEKeyword keyword;
    Tcl_DString command, pathName;
    int code;

    /*
     * Do nothing if we don't have an interpreter or the procedure doesn't exist.

     */

    if (!interp || !Tcl_FindCommand(interp, procedure, NULL, 0)) {
	return;
    }

    fileSpecDesc = [event aeDesc];
................................................................................
    Tcl_FreeEncoding(utf8);
    AEDisposeDesc(&contents);

    /*
     * Handle the event by evaluating the Tcl expression we constructed.
     */


    code = Tcl_EvalEx(interp, Tcl_DStringValue(&command),
	    Tcl_DStringLength(&command), TCL_EVAL_GLOBAL);
    if (code != TCL_OK) {
	Tcl_BackgroundException(interp, code);
    }
    Tcl_DStringFree(&command);

}
 
/*
 *----------------------------------------------------------------------
 *
 * TkMacOSXInitAppleEvents --
 *
................................................................................
 *----------------------------------------------------------------------
 */

void
TkMacOSXInitAppleEvents(
    Tcl_Interp *interp)   /* not used */
{

    NSAppleEventManager *aeManager = [NSAppleEventManager sharedAppleEventManager];
    static Boolean initialized = FALSE;

    if (!initialized) {
	initialized = TRUE;

	[aeManager setEventHandler:NSApp
	    andSelector:@selector(handleQuitApplicationEvent:withReplyEvent:)
................................................................................

static int
ReallyKillMe(
    Tcl_Event *eventPtr,
    int flags)
{
    Tcl_Interp *interp = ((KillEvent *) eventPtr)->interp;



    int quit = Tcl_FindCommand(interp, "::tk::mac::Quit", NULL, 0)!=NULL;
    int code = Tcl_EvalEx(interp, quit ? "::tk::mac::Quit" : "exit", -1, TCL_EVAL_GLOBAL);


    if (code != TCL_OK) {
	/*
	 * Should be never reached...
	 */

	Tcl_BackgroundException(interp, code);
    }

    return 1;
}
 
/*
 *----------------------------------------------------------------------
 *
 * MissedAnyParameters --
................................................................................

   err = AEGetAttributePtr(theEvent, keyMissedKeywordAttr,
	    typeWildCard, &returnedType, NULL, 0, &actualSize);

   return (err != errAEDescNotFound);
}
 

/*
 * Local Variables:
 * mode: objc
 * c-basic-offset: 4
 * fill-column: 79
 * coding: utf-8
 * End:
 */






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				 * AppleEvent */
} KillEvent;

/*
 * Static functions used only in this file.
 */

static void		tkMacOSXProcessFiles(NSAppleEventDescriptor *event,
			    NSAppleEventDescriptor *replyEvent,

			    Tcl_Interp *interp, const char* procedure);
static int		MissedAnyParameters(const AppleEvent *theEvent);
static int		ReallyKillMe(Tcl_Event *eventPtr, int flags);
static void		RunSimpleTclCommand(Tcl_Interp *interp,
			    const char *command);

#pragma mark TKApplication(TKHLEvents)

@implementation TKApplication(TKHLEvents)
- (void) terminate: (id) sender
{
    [self handleQuitApplicationEvent:Nil withReplyEvent:Nil];
................................................................................
	Tcl_QueueEvent((Tcl_Event *) eventPtr, TCL_QUEUE_HEAD);
    }
}

- (void) handleOpenApplicationEvent: (NSAppleEventDescriptor *)event
    withReplyEvent: (NSAppleEventDescriptor *)replyEvent
{



    RunSimpleTclCommand(_eventInterp, "::tk::mac::OpenApplication");






}

- (void) handleReopenApplicationEvent: (NSAppleEventDescriptor *)event
    withReplyEvent: (NSAppleEventDescriptor *)replyEvent
{
    [NSApp activateIgnoringOtherApps: YES];


    RunSimpleTclCommand(_eventInterp, "::tk::mac::ReopenApplication");





}

- (void) handleShowPreferencesEvent: (NSAppleEventDescriptor *)event
    withReplyEvent: (NSAppleEventDescriptor *)replyEvent
{

    RunSimpleTclCommand(_eventInterp, "::tk::mac::ShowPreferences");






}

- (void) handleOpenDocumentsEvent: (NSAppleEventDescriptor *)event
    withReplyEvent: (NSAppleEventDescriptor *)replyEvent
{
    tkMacOSXProcessFiles(event, replyEvent, _eventInterp,
	    "::tk::mac::OpenDocument");
}

- (void) handlePrintDocumentsEvent: (NSAppleEventDescriptor *)event
    withReplyEvent: (NSAppleEventDescriptor *)replyEvent
{
    tkMacOSXProcessFiles(event, replyEvent, _eventInterp,
	    "::tk::mac::PrintDocument");
}

- (void) handleDoScriptEvent: (NSAppleEventDescriptor *)event
    withReplyEvent: (NSAppleEventDescriptor *)replyEvent
{
    OSStatus err;
    const AEDesc *theDesc = nil;
................................................................................

    theDesc = [event aeDesc];
    if (theDesc == nil) {
	return;
    }

    err = AEGetParamPtr(theDesc, keyDirectObject, typeWildCard, &initialType,
	    NULL, 0, NULL);
    if (err != noErr) {
	sprintf(errString, "AEDoScriptHandler: GetParamDesc error %d", (int)err);
	AEPutParamPtr((AppleEvent *) [replyEvent aeDesc], keyErrorString,
		typeChar, errString, strlen(errString));
	return;
    }

    if (MissedAnyParameters((AppleEvent *) theDesc)) {
    	sprintf(errString, "AEDoScriptHandler: extra parameters");
    	AEPutParamPtr((AppleEvent *) [replyEvent aeDesc], keyErrorString,
		typeChar, errString, strlen(errString));
    	return;
    }

    Tcl_Preserve(_eventInterp);
    if (initialType == typeFileURL || initialType == typeAlias) {
	/*
	 * The descriptor can be coerced to a file url.  Source the file, or
	 * pass the path as a string argument to ::tk::mac::DoScriptFile if
	 * that procedure exists.
	 */

	err = AEGetParamPtr(theDesc, keyDirectObject, typeFileURL, &type,
		(Ptr) URLBuffer, URL_MAX_LENGTH, &actual);
	if (err == noErr && actual > 0){
	    URLBuffer[actual] = '\0';
	    NSString *urlString = [NSString stringWithUTF8String:(char*)URLBuffer];
	    NSURL *fileURL = [NSURL URLWithString:urlString];
	    Tcl_DString command;

	    Tcl_DStringInit(&command);
	    if (Tcl_FindCommand(_eventInterp, "::tk::mac::DoScriptFile", NULL, 0)) {
		Tcl_DStringAppend(&command, "::tk::mac::DoScriptFile", -1);
	    } else {
		Tcl_DStringAppend(&command, "source", -1);
	    }
	    Tcl_DStringAppendElement(&command, [[fileURL path] UTF8String]);
	    tclErr = Tcl_EvalEx(_eventInterp, Tcl_DStringValue(&command),
		    Tcl_DStringLength(&command), TCL_EVAL_GLOBAL);
	}
    } else if (noErr == AEGetParamPtr(theDesc, keyDirectObject, typeUTF8Text,
	    &type, NULL, 0, &actual)) {
	if (actual > 0) {
	    /*
	     * The descriptor can be coerced to UTF8 text.  Evaluate as Tcl, or
	     * or pass the text as a string argument to ::tk::mac::DoScriptText
	     * if that procedure exists.
	     */

	    char *data = ckalloc(actual + 1);

	    if (noErr == AEGetParamPtr(theDesc, keyDirectObject, typeUTF8Text,
		    &type, data, actual, NULL)) {
		if (Tcl_FindCommand(_eventInterp, "::tk::mac::DoScriptText",
			NULL, 0)) {
		    Tcl_DString command;

		    Tcl_DStringInit(&command);
		    Tcl_DStringAppend(&command, "::tk::mac::DoScriptText", -1);
		    Tcl_DStringAppendElement(&command, data);
		    tclErr = Tcl_EvalEx(_eventInterp,
			    Tcl_DStringValue(&command),
			    Tcl_DStringLength(&command), TCL_EVAL_GLOBAL);
		} else {
		    tclErr = Tcl_EvalEx(_eventInterp, data, actual,
			    TCL_EVAL_GLOBAL);
		}
	    }
	    ckfree(data);
	}
    } else {
	/*
	 * The descriptor can not be coerced to a fileURL or UTF8 text.
................................................................................
	 */
	for (int i = 0; i < 4; i++) {
	    typeString[i] = ((char*)&initialType)[3-i];
	}
	typeString[4] = '\0';
	sprintf(errString, "AEDoScriptHandler: invalid script type '%s', "
		"must be coercable to 'furl' or 'utf8'", typeString);
	AEPutParamPtr((AppleEvent*)[replyEvent aeDesc], keyErrorString,
		typeChar, errString, strlen(errString));
    }

    /*
     * If we ran some Tcl code, put the result in the reply.
     */

    if (tclErr >= 0) {
	int reslen;
	const char *result =
		Tcl_GetStringFromObj(Tcl_GetObjResult(_eventInterp), &reslen);

	if (tclErr == TCL_OK) {
	    AEPutParamPtr((AppleEvent *) [replyEvent aeDesc], keyDirectObject,
		    typeChar, result, reslen);
	} else {
	    AEPutParamPtr((AppleEvent *) [replyEvent aeDesc], keyErrorString,
		    typeChar, result, reslen);
	    AEPutParamPtr((AppleEvent *) [replyEvent aeDesc], keyErrorNumber,
		    typeSInt32, (Ptr) &tclErr, sizeof(int));
	}
    }
    Tcl_Release(_eventInterp);
    return;
}
@end

#pragma mark -
 
static void
RunSimpleTclCommand(
    Tcl_Interp *interp,
    const char *command)
{
    int code;

    if (interp && Tcl_FindCommand(interp, command, NULL, 0)) {
	Tcl_Preserve(interp);
	code = Tcl_EvalEx(interp, command, -1, TCL_EVAL_GLOBAL);
	if (code != TCL_OK) {
	    Tcl_BackgroundException(interp, code);
	}
	Tcl_Release(interp);
    }
}
 
/*
 *----------------------------------------------------------------------
 *
 * TkMacOSXProcessFiles --
 *
 *	Extract a list of fileURLs from an AppleEvent and call the specified
 *      procedure with the file paths as arguments.
................................................................................
    Size actual;
    long count, index;
    AEKeyword keyword;
    Tcl_DString command, pathName;
    int code;

    /*
     * Do nothing if we don't have an interpreter or the procedure doesn't
     * exist.
     */

    if (!interp || !Tcl_FindCommand(interp, procedure, NULL, 0)) {
	return;
    }

    fileSpecDesc = [event aeDesc];
................................................................................
    Tcl_FreeEncoding(utf8);
    AEDisposeDesc(&contents);

    /*
     * Handle the event by evaluating the Tcl expression we constructed.
     */

    Tcl_Preserve(interp);
    code = Tcl_EvalEx(interp, Tcl_DStringValue(&command),
	    Tcl_DStringLength(&command), TCL_EVAL_GLOBAL);
    if (code != TCL_OK) {
	Tcl_BackgroundException(interp, code);
    }
    Tcl_DStringFree(&command);
    Tcl_Release(interp);
}
 
/*
 *----------------------------------------------------------------------
 *
 * TkMacOSXInitAppleEvents --
 *
................................................................................
 *----------------------------------------------------------------------
 */

void
TkMacOSXInitAppleEvents(
    Tcl_Interp *interp)   /* not used */
{
    NSAppleEventManager *aeManager =
	    [NSAppleEventManager sharedAppleEventManager];
    static Boolean initialized = FALSE;

    if (!initialized) {
	initialized = TRUE;

	[aeManager setEventHandler:NSApp
	    andSelector:@selector(handleQuitApplicationEvent:withReplyEvent:)
................................................................................

static int
ReallyKillMe(
    Tcl_Event *eventPtr,
    int flags)
{
    Tcl_Interp *interp = ((KillEvent *) eventPtr)->interp;

    Tcl_Preserve(interp);

    int quit = Tcl_FindCommand(interp, "::tk::mac::Quit", NULL, 0)!=NULL;
    int code = Tcl_EvalEx(interp, quit ? "::tk::mac::Quit" : "exit", -1,
	    TCL_EVAL_GLOBAL);

    if (code != TCL_OK) {
	/*
	 * Should be never reached...
	 */

	Tcl_BackgroundException(interp, code);
    }
    Tcl_Release(interp);
    return 1;
}
 
/*
 *----------------------------------------------------------------------
 *
 * MissedAnyParameters --
................................................................................

   err = AEGetAttributePtr(theEvent, keyMissedKeywordAttr,
	    typeWildCard, &returnedType, NULL, 0, &actualSize);

   return (err != errAEDescNotFound);
}
 

/*
 * Local Variables:
 * mode: objc
 * c-basic-offset: 4
 * fill-column: 79
 * coding: utf-8
 * End:
 */

Changes to macosx/tkMacOSXImage.c.

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int
_XInitImageFuncPtrs(
    XImage *image)
{
    return 0;
}

/*
 *----------------------------------------------------------------------
 *
 * TkMacOSXCreateCGImageWithXImage --
 *
 *	Create CGImage from XImage, copying the image data.  Called
 *      in Tk_PutImage and (currently) nowhere else.
................................................................................
	    while (srcPtr < endPtr) {
		*destPtr++ = xBitReverseTable[(unsigned char)(*(srcPtr++))];
	    }
	} else {
	    data = memcpy(ckalloc(len), image->data + image->xoffset, len);
	}
	if (data) {
	    provider = CGDataProviderCreateWithData(data, data, len, releaseData);

	}
	if (provider) {
	    img = CGImageMaskCreate(image->width, image->height, bitsPerComponent,
				    bitsPerPixel, image->bytes_per_line, provider, decode, 0);
	}
    } else if (image->format == ZPixmap && image->bits_per_pixel == 32) {


	/*
	 * Color image
	 */

	CGColorSpaceRef colorspace = CGColorSpaceCreateDeviceRGB();

	if (image->width == 0 && image->height == 0) {

	    /*
	     * CGCreateImage complains on early macOS releases.
	     */

	    return NULL;
	}
	bitsPerComponent = 8;
	bitsPerPixel = 32;
	bitmapInfo = (image->byte_order == MSBFirst ?
		      kCGBitmapByteOrder32Little : kCGBitmapByteOrder32Big);
	bitmapInfo |= kCGImageAlphaLast;
	data = memcpy(ckalloc(len), image->data + image->xoffset, len);
	if (data) {
	    provider = CGDataProviderCreateWithData(data, data, len, releaseData);

	}
	if (provider) {
	    img = CGImageCreate(image->width, image->height, bitsPerComponent,
		    bitsPerPixel, image->bytes_per_line, colorspace, bitmapInfo,
		    provider, decode, 0, kCGRenderingIntentDefault);
	    CFRelease(provi