Attachment "scrollw.tcl" to
ticket [472718ffff]
added by
hobbs
2003-02-25 17:04:23.
# -----------------------------------------------------------------------------
# scrollw.tcl
# This file is part of Unifix BWidget Toolkit
# $Id: scrollw.tcl,v 1.5 2003/02/25 09:51:03 hobbs Exp $
# -----------------------------------------------------------------------------
# Index of commands:
# - ScrolledWindow::create
# - ScrolledWindow::getframe
# - ScrolledWindow::setwidget
# - ScrolledWindow::configure
# - ScrolledWindow::cget
# - ScrolledWindow::_set_hframe
# - ScrolledWindow::_set_vscroll
# - ScrolledWindow::_setData
# - ScrolledWindow::_setSBSize
# - ScrolledWindow::_realize
# -----------------------------------------------------------------------------
namespace eval ScrolledWindow {
Widget::declare ScrolledWindow {
{-background TkResource "" 0 button}
{-scrollbar Enum both 0 {none both vertical horizontal}}
{-auto Enum both 0 {none both vertical horizontal}}
{-sides Enum se 0 {ne en nw wn se es sw ws}}
{-size Int 0 1 "%d >= 0"}
{-ipad Int 1 1 "%d >= 0"}
{-managed Boolean 1 1}
{-relief TkResource flat 0 frame}
{-borderwidth TkResource 0 0 frame}
{-bg Synonym -background}
{-bd Synonym -borderwidth}
}
Widget::addmap ScrolledWindow "" :cmd {-relief {} -borderwidth {}}
proc ::ScrolledWindow {path args} {
return [eval [list ScrolledWindow::create $path] $args]
}
proc use {} {}
}
# -----------------------------------------------------------------------------
# Command ScrolledWindow::create
# -----------------------------------------------------------------------------
proc ScrolledWindow::create { path args } {
upvar \#0 ScrolledWindow::$path data
Widget::init ScrolledWindow $path $args
set bg [Widget::cget $path -background]
set sbsize [Widget::cget $path -size]
set sw [frame $path \
-relief flat -borderwidth 0 -background $bg \
-highlightthickness 0 -takefocus 0]
scrollbar $path.hscroll \
-highlightthickness 0 -takefocus 0 \
-orient horiz \
-relief sunken \
-bg $bg
scrollbar $path.vscroll \
-highlightthickness 0 -takefocus 0 \
-orient vert \
-relief sunken \
-bg $bg
set data(realized) 0
_setData $path \
[Widget::cget $path -scrollbar] \
[Widget::cget $path -auto] \
[Widget::cget $path -sides]
if {[Widget::cget $path -managed]} {
set data(hsb,packed) $data(hsb,present)
set data(vsb,packed) $data(vsb,present)
} else {
set data(hsb,packed) 0
set data(vsb,packed) 0
}
if {$sbsize} {
$path.vscroll configure -width $sbsize
$path.hscroll configure -width $sbsize
} else {
set sbsize [$path.vscroll cget -width]
}
set data(ipad) [Widget::cget $path -ipad]
if {$data(hsb,packed)} {
grid $path.hscroll -column 1 -row $data(hsb,row) \
-sticky ew -ipady $data(ipad)
}
if {$data(vsb,packed)} {
grid $path.vscroll -column $data(vsb,column) -row 1 \
-sticky ns -ipadx $data(ipad)
}
grid columnconfigure $path 1 -weight 1
grid rowconfigure $path 1 -weight 1
bind $path <Configure> [list ScrolledWindow::_realize $path]
bind $path <Destroy> [list ScrolledWindow::_destroy $path]
rename $path ::$path:cmd
proc ::$path { cmd args } "return \[eval ScrolledWindow::\$cmd $path \$args\]"
return $path
}
# -----------------------------------------------------------------------------
# Command ScrolledWindow::getframe
# -----------------------------------------------------------------------------
proc ScrolledWindow::getframe { path } {
return $path
}
# -----------------------------------------------------------------------------
# Command ScrolledWindow::setwidget
# -----------------------------------------------------------------------------
proc ScrolledWindow::setwidget { path widget } {
upvar \#0 ScrolledWindow::$path data
grid $widget -in $path -row 1 -column 1 -sticky news
$path.hscroll configure -command [list $widget xview]
$path.vscroll configure -command [list $widget yview]
$widget configure \
-xscrollcommand [list ScrolledWindow::_set_hscroll $path] \
-yscrollcommand [list ScrolledWindow::_set_vscroll $path]
}
# -----------------------------------------------------------------------------
# Command ScrolledWindow::configure
# -----------------------------------------------------------------------------
proc ScrolledWindow::configure { path args } {
upvar \#0 ScrolledWindow::$path data
set res [Widget::configure $path $args]
if { [Widget::hasChanged $path -background bg] } {
$path configure -background $bg
catch {$path.hscroll configure -background $bg}
catch {$path.vscroll configure -background $bg}
}
if {[Widget::hasChanged $path -scrollbar scrollbar] | \
[Widget::hasChanged $path -auto auto] | \
[Widget::hasChanged $path -sides sides]} {
_setData $path $scrollbar $auto $sides
foreach {vmin vmax} [$path.hscroll get] { break }
set data(hsb,packed) [expr {$data(hsb,present) && \
(!$data(hsb,auto) || ($vmin != 0 || $vmax != 1))}]
foreach {vmin vmax} [$path.vscroll get] { break }
set data(vsb,packed) [expr {$data(vsb,present) && \
(!$data(vsb,auto) || ($vmin != 0 || $vmax != 1))}]
set data(ipad) [Widget::cget $path -ipad]
if {$data(hsb,packed)} {
grid $path.hscroll -column 1 -row $data(hsb,row) \
-sticky ew -ipady $data(ipad)
}
if {$data(vsb,packed)} {
grid $path.vscroll -column $data(vsb,column) -row 1 \
-sticky ns -ipadx $data(ipad)
}
}
return $res
}
# -----------------------------------------------------------------------------
# Command ScrolledWindow::cget
# -----------------------------------------------------------------------------
proc ScrolledWindow::cget { path option } {
return [Widget::cget $path $option]
}
# -----------------------------------------------------------------------------
# Command ScrolledWindow::_destroy
# -----------------------------------------------------------------------------
proc ScrolledWindow::_destroy { path } {
upvar \#0 ScrolledWindow::$path data
unset data
Widget::destroy $path
rename $path {}
}
# -----------------------------------------------------------------------------
# Command ScrolledWindow::_set_hscroll
# -----------------------------------------------------------------------------
proc ScrolledWindow::_set_hscroll { path vmin vmax } {
upvar \#0 ScrolledWindow::$path data
if {$data(realized) && $data(hsb,present)} {
if {$data(hsb,auto)} {
if {$data(hsb,packed) && $vmin == 0 && $vmax == 1} {
set data(hsb,packed) 0
grid remove $path.hscroll
} elseif {!$data(hsb,packed) && ($vmin != 0 || $vmax != 1)} {
set data(hsb,packed) 1
grid $path.hscroll -column 1 -row $data(hsb,row) \
-sticky ew -ipady $data(ipad)
}
}
$path.hscroll set $vmin $vmax
}
}
# -----------------------------------------------------------------------------
# Command ScrolledWindow::_set_vscroll
# -----------------------------------------------------------------------------
proc ScrolledWindow::_set_vscroll { path vmin vmax } {
upvar \#0 ScrolledWindow::$path data
if {$data(realized) && $data(vsb,present)} {
if {$data(vsb,auto)} {
if {$data(vsb,packed) && $vmin == 0 && $vmax == 1} {
set data(vsb,packed) 0
grid remove $path.vscroll
} elseif {!$data(vsb,packed) && ($vmin != 0 || $vmax != 1) } {
set data(vsb,packed) 1
grid $path.vscroll -column $data(vsb,column) -row 1 \
-sticky ns -ipadx $data(ipad)
}
}
$path.vscroll set $vmin $vmax
}
}
proc ScrolledWindow::_setData {path scrollbar auto sides} {
upvar \#0 ScrolledWindow::$path data
set sb [lsearch {none horizontal vertical both} $scrollbar]
set auto [lsearch {none horizontal vertical both} $auto]
set data(hsb,present) [expr {($sb & 1) != 0}]
set data(hsb,auto) [expr {($auto & 1) != 0}]
set data(hsb,row) [expr {[string match *n* $sides] ? 0 : 2}]
set data(vsb,present) [expr {($sb & 2) != 0}]
set data(vsb,auto) [expr {($auto & 2) != 0}]
set data(vsb,column) [expr {[string match *w* $sides] ? 0 : 2}]
}
# -----------------------------------------------------------------------------
# Command ScrolledWindow::_realize
# -----------------------------------------------------------------------------
proc ScrolledWindow::_realize { path } {
upvar \#0 ScrolledWindow::$path data
bind $path <Configure> {}
set data(realized) 1
}
