Tk Source Code

    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

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.
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
.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.
.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 8.6
.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
.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

		    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
    char *reserved1;		/* Reserved for future extension. */
				 * 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

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 */
    NULL, 0, NULL, NULL
    0, NULL, NULL
};

/*
 *--------------------------------------------------------------
 *
 * CreateArc --
 *

{
    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 --

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

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

			    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 */
    NULL, 0, NULL, 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);
}

/*
 *--------------------------------------------------------------
 *
 * 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);
}

/*
 *--------------------------------------------------------------
 *

			    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 */
    GetPolygonIndex,			/* indexProc */
    NULL,				/* icursorProc */
    NULL,				/* selectionProc */
    PolygonInsert,		/* insertProc */
    PolygonInsert,			/* insertProc */
    PolygonDeleteCoords,		/* dTextProc */
    NULL,				/* nextPtr */
    RotatePolygon,			/* rotateProc */
    NULL, 0, NULL, 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;
}

/*
 *--------------------------------------------------------------
 *
 * 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.

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

	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:
 */

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

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",
        "image",	"imove",	"index",	"insert",
	"itemcget",	"itemconfigure",
	"lower",	"move",		"moveto",	"postscript",
	"raise",	"rchars",	"scale",	"scan",
	"select",	"type",		"xview",	"yview",
	NULL
	"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_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
	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,

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);
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);

			    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 */
    NULL, 0, NULL, 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 */
    RotateRectOval,		/* rotateProc */
    NULL, 0, NULL, NULL
    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.

        {#c0c0c0 #c0c0c0 #c0c0c0 #c0c0c0 #c0c0c0 #c0c0c0 #c0c0c0 #c0c0c0 #c0c0c0 #c0c0c0 #c0c0c0 #c0c0c0 #c0c0c0 #c0c0c0 #c0c0c0 #c0c0c0 #c0c0c0 #c0c0c0 #c0c0c0 #c0c0c0} \
        {#c0c0c0 #c0c0c0 #c0c0c0 #c0c0c0 #c0c0c0 #c0c0c0 #c0c0c0 #c0c0c0 #c0c0c0 #c0c0c0 #c0c0c0 #c0c0c0 #c0c0c0 #c0c0c0 #c0c0c0 #c0c0c0 #c0c0c0 #c0c0c0 #c0c0c0 #c0c0c0}}
} -cleanup {
    destroy .c
    image delete testimage
} -result 1

destroy .c
test canvas-21.1 {canvas rotate} -setup {
    pack [canvas .c]
} -body {
    .c create line 50 50 50 100 100 100
    .c rotate all 75 75 90
    lmap c [.c coords all] {format %.2f $c}
} -cleanup {
    destroy .c
} -result {50.00 100.00 100.00 100.00 100.00 50.00}
test canvas-21.2 {canvas rotate} -setup {
    pack [canvas .c]
} -body {
    .c create line 50 50 50 100 100 100
    .c rotate all 75 75 -10
    lmap c [.c coords all] {format %.2f $c}
} -cleanup {
    destroy .c
} -result {54.72 46.04 46.04 95.28 95.28 103.96}
test canvas-21.3 {canvas rotate: syntax} -setup {
    pack [canvas .c]
} -body {
    .c rotate all 75 75
} -returnCodes error -cleanup {
    destroy .c
} -result {wrong # args: should be ".c rotate tagOrId x y angle"}
test canvas-21.4 {canvas rotate: syntax} -setup {
    pack [canvas .c]
} -body {
    .c rotate all 75 75 123 123
} -returnCodes error -cleanup {
    destroy .c
} -result {wrong # args: should be ".c rotate tagOrId x y angle"}
test canvas-21.5 {canvas rotate: syntax} -setup {
    pack [canvas .c]
} -body {
    .c rotate {!} 1 1 1
} -returnCodes error -cleanup {
    destroy .c
} -result {missing tag in tag search expression}
test canvas-21.6 {canvas rotate: syntax} -setup {
    pack [canvas .c]
} -body {
    .c rotate all x 1 1
} -returnCodes error -cleanup {
    destroy .c
} -result {bad screen distance "x"}
test canvas-21.7 {canvas rotate: syntax} -setup {
    pack [canvas .c]
} -body {
    .c rotate all 1 x 1
} -returnCodes error -cleanup {
    destroy .c
} -result {bad screen distance "x"}
test canvas-21.8 {canvas rotate: syntax} -setup {
    pack [canvas .c]
} -body {
    .c rotate all 1 1 x
} -returnCodes error -cleanup {
    destroy .c
} -result {expected floating-point number but got "x"}
test canvas-21.9 {canvas rotate: nothing to rotate} -setup {
    pack [canvas .c]
} -body {
    .c rotate all 75 75 10
} -cleanup {
    destroy .c
} -result {}
test canvas-21.10 {canvas rotate: multiple things to rotate} -setup {
    pack [canvas .c]
} -body {
    .c create line 50 50 50 100 -tag a
    .c create line 50 50 100 50 -tag b
    .c rotate all 75 75 45
    list [lmap c [.c coords a] {format %.2f $c}] [lmap c [.c coords b] {format %.2f $c}]
} -cleanup {
    destroy .c
} -result {{39.64 75.00 75.00 110.36} {39.64 75.00 75.00 39.64}}

test canvas-22.1 {canvas rotate: arc item rotation behaviour} -setup {
    pack [canvas .c]
} -body {
    .c create arc 50 50 75 75 -start 45 -extent 90
    .c rotate all 100 100 90
    list [lmap c [.c coords all] {format %.2f $c}] \
	[lmap o {-start -extent} {.c itemcget all $o}] \
	[.c bbox all]
} -cleanup {
    destroy .c
} -result {{50.00 125.00 75.00 150.00} {45.0 90.0} {52 123 73 140}}
test canvas-22.2 {canvas rotate: bitmap item rotation behaviour} -setup {
    pack [canvas .c]
} -body {
    .c create bitmap 50 50 -bitmap info -anchor se
    .c rotate all 100 100 90
    list [lmap c [.c coords all] {format %.2f $c}] \
	[lmap o {-bitmap -anchor} {.c itemcget all $o}] \
	[.c bbox all]
} -cleanup {
    destroy .c
} -result {{50.00 150.00} {info se} {42 129 50 150}}
test canvas-22.3 {canvas rotate: image item rotation behaviour} -setup {
    pack [canvas .c]
    image create photo dummy -width 50 -height 50
} -body {
    .c create image 50 50 -image dummy -anchor se
    .c rotate all 100 100 90
    list [lmap c [.c coords all] {format %.2f $c}] \
	[lmap o {-image -anchor} {.c itemcget all $o}] \
	[.c bbox all]
} -cleanup {
    destroy .c
    image delete dummy
} -result {{50.00 150.00} {dummy se} {0 100 50 150}}
test canvas-22.4 {canvas rotate: line item rotation behaviour} -setup {
    pack [canvas .c]
} -body {
    .c create line 50 50 75 50 50 75 75 75
    .c rotate all 100 100 90
    list [lmap c [.c coords all] {format %.2f $c}] \
	[lmap o {} {.c itemcget all $o}] \
	[.c bbox all]
} -cleanup {
    destroy .c
} -result {{50.00 150.00 50.00 125.00 75.00 150.00 75.00 125.00} {} {48 123 77 152}}
test canvas-22.5 {canvas rotate: oval item rotation behaviour} -setup {
    pack [canvas .c]
} -body {
    .c create oval 50 50 65 85
    .c rotate all 100 100 90
    list [lmap c [.c coords all] {format %.2f $c}] \
	[lmap o {} {.c itemcget all $o}] \
	[.c bbox all]
} -cleanup {
    destroy .c
} -result {{60.00 125.00 75.00 160.00} {} {59 124 76 161}}
test canvas-22.6 {canvas rotate: polygon item rotation behaviour} -setup {
    pack [canvas .c]
} -body {
    .c create polygon 50 50 75 50 50 75 75 75
    .c rotate all 100 100 90
    list [lmap c [.c coords all] {format %.2f $c}] \
	[lmap o {} {.c itemcget all $o}] \
	[.c bbox all]
} -cleanup {
    destroy .c
} -result {{50.00 150.00 50.00 125.00 75.00 150.00 75.00 125.00} {} {49 124 76 151}}
test canvas-22.7 {canvas rotate: rectangle item rotation behaviour} -setup {
    pack [canvas .c]
} -body {
    .c create rectangle 50 50 75 75
    .c rotate all 100 100 90
    list [lmap c [.c coords all] {format %.2f $c}] \
	[lmap o {} {.c itemcget all $o}] \
	[.c bbox all]
} -cleanup {
    destroy .c
} -result {{50.00 125.00 75.00 150.00} {} {49 124 76 151}}
test canvas-22.8 {canvas rotate: text item rotation behaviour} -setup {
    pack [canvas .c]
} -body {
    .c create text 50 50 -text foo -angle 45
    .c rotate all 100 100 90
    list [lmap c [.c coords all] {format %.2f $c}] \
	[lmap o {-text -angle} {.c itemcget all $o}]
    # [.c bbox all]
    # No testing of text bounding box; fonts too variable!
} -cleanup {
    destroy .c
} -result {{50.00 150.00} {foo 45.0}}
test canvas-22.9 {canvas rotate: window item rotation behaviour} -setup {
    pack [canvas .c]
} -body {
    .c create window 50 50 -window [frame .c.f -width 25 -height 25] \
	-anchor se
    .c rotate all 100 100 90
    list [lmap c [.c coords all] {format %.2f $c}] \
	[lmap o {} {.c itemcget all $o}] \
	[.c bbox all]
} -cleanup {
    destroy .c
} -result {{50.00 150.00} {} {25 125 50 150}}

# cleanup
imageCleanup
cleanupTests
return

# Local Variables:
# mode: tcl