Import build of Tcl/Tk 8.6.8
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272
amd64/lib/tix8.4.3/IconView.tcl
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272
amd64/lib/tix8.4.3/IconView.tcl
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# -*- mode: TCL; fill-column: 75; tab-width: 8; coding: iso-latin-1-unix -*-
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#
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# $Id: IconView.tcl,v 1.2 2001/12/09 05:04:02 idiscovery Exp $
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#
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# IconView.tcl --
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#
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# This file implements the Icon View widget: the "icon" view mode of
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# the MultiView widget. It implements:
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#
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# (1) Creation of the icons in the canvas subwidget.
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# (2) Automatic arrangement of the objects
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#
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# Copyright (c) 1993-1999 Ioi Kim Lam.
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# Copyright (c) 2000-2001 Tix Project Group.
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#
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# See the file "license.terms" for information on usage and redistribution
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# of this file, and for a DISCLAIMER OF ALL WARRANTIES.
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#
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tixWidgetClass tixIconView {
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-classname TixIconView
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-superclass tixCObjView
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-method {
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add arrange
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}
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-flag {
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-autoarrange
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}
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-static {
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}
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-configspec {
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{-autoarrange autoArrange AutoArrange 0 tixVerifyBoolean}
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}
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-default {
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{.scrollbar auto}
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{*borderWidth 1}
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{*canvas.background #c3c3c3}
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{*canvas.highlightBackground #d9d9d9}
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{*canvas.relief sunken}
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{*canvas.takeFocus 1}
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{*Scrollbar.takeFocus 0}
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}
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-forcecall {
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}
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}
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proc tixIconView:ConstructWidget {w} {
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upvar #0 $w data
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tixChainMethod $w ConstructWidget
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}
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proc tixIconView:SetBindings {w} {
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upvar #0 $w data
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tixChainMethod $w SetBindings
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set c $data(w:canvas)
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bind $c <1> "tixIconView:StartDrag $w %x %y"
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bind $c <B1-Motion> "tixIconView:Drag $w %x %y"
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bind $c <ButtonRelease-1> "tixIconView:EndDrag $w"
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}
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proc tixIconView:StartDrag {w x y} {
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upvar #0 $w data
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global lastX lastY
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set c $data(w:canvas)
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$c raise current
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set lastX [$c canvasx $x]
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set lastY [$c canvasy $y]
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}
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proc tixIconView:Drag {w x y} {
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upvar #0 $w data
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global lastX lastY
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set c $data(w:canvas)
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set x [$c canvasx $x]
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set y [$c canvasy $y]
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$c move current [expr $x-$lastX] [expr $y-$lastY]
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set lastX $x
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set lastY $y
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}
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proc tixIconView:EndDrag {w} {
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upvar #0 $w data
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tixCallMethod $w adjustscrollregion
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}
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#----------------------------------------------------------------------
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#
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# option configs
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#----------------------------------------------------------------------
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proc tixIconView:add {w tag image text} {
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upvar #0 $w data
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set cmp [image create compound -window $data(w:canvas)]
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$cmp add image -image $image
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$cmp add line
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$cmp add text -text $text
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set id [$data(w:canvas) create image 0 0 -image $cmp -anchor nw]
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$data(w:canvas) addtag $tag withtag $id
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if {$data(-autoarrange)} {
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tixWidgetDoWhenIdle tixIconView:Arrange $w 1
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}
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}
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# Do it in an idle handler, so that Arrange is not called before the window
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# is properly mapped.
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#
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proc tixIconView:arrange {w} {
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tixWidgetDoWhenIdle tixIconView:Arrange $w 1
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}
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proc tixIconView:PackOneRow {w row y maxH bd padX padY} {
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upvar #0 $w data
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set iX [expr $bd+$padX]
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foreach i $row {
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set box [$data(w:canvas) bbox $i]
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set W [expr [lindex $box 2]-[lindex $box 0]+1]
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set H [expr [lindex $box 3]-[lindex $box 1]+1]
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set iY [expr $y + $maxH - $H]
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$data(w:canvas) coords $i $iX $iY
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incr iX [expr $W+$padX]
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}
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}
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# virtual method
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#
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proc tixIconView:PlaceWindow {w} {
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upvar #0 $w data
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if {$data(-autoarrange)} {
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tixWidgetDoWhenIdle tixIconView:Arrange $w 0
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}
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tixChainMethod $w PlaceWindow
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}
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proc tixIconView:Arrange {w adjust} {
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upvar #0 $w data
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set padX 2
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set padY 2
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tixIconView:ArrangeGrid $w $padX $padY
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if {$adjust} {
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tixCallMethod $w adjustscrollregion
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}
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}
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# the items are not packed
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#
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proc tixIconView:ArrangeGrid {w padX padY} {
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upvar #0 $w data
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set maxW 0
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set maxH 0
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foreach item [$data(w:canvas) find all] {
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set box [$data(w:canvas) bbox $item]
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set itemW [expr [lindex $box 2]-[lindex $box 0]+1]
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set itemH [expr [lindex $box 3]-[lindex $box 1]+1]
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if {$maxW < $itemW} {
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set maxW $itemW
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}
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if {$maxH < $itemH} {
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set maxH $itemH
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}
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}
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if {$maxW == 0 || $maxH == 0} {
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return
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}
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set winW [tixWinWidth $data(w:canvas)]
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set bd [expr [$data(w:canvas) cget -bd]+\
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[$data(w:canvas) cget -highlightthickness]]
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set cols [expr $winW / ($maxW+$padX)]
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if {$cols < 1} {
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set cols 1
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}
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set y $bd
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set c 0
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set x $bd
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foreach item [$data(w:canvas) find all] {
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set box [$data(w:canvas) bbox $item]
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set itemW [expr [lindex $box 2]-[lindex $box 0]+1]
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set itemH [expr [lindex $box 3]-[lindex $box 1]+1]
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set iX [expr $x + $padX + ($maxW-$itemW)/2]
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set iY [expr $y + $padY + ($maxH-$itemH) ]
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$data(w:canvas) coords $item $iX $iY
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incr c
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incr x [expr $maxW + $padY]
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if {$c == $cols} {
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set c 0
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incr y [expr $maxH + $padY]
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set x $bd
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}
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}
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}
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# the items are packed
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#
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proc tixIconView:ArrangePack {w padX padY} {
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upvar #0 $w data
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set winW [tixWinWidth $data(w:canvas)]
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set bd [expr [$data(w:canvas) cget -bd]+\
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[$data(w:canvas) cget -highlightthickness]]
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set y [expr $bd + $padY]
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set maxH 0
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set usedW $padX
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set row ""
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foreach item [$data(w:canvas) find all] {
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set box [$data(w:canvas) bbox $item]
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set itemW [expr [lindex $box 2]-[lindex $box 0]+1]
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set itemH [expr [lindex $box 3]-[lindex $box 1]+1]
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if {[expr $usedW + $itemW] > $winW} {
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if {$row == ""} {
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# only one item in this row
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#
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$data(w:canvas) coords $item [expr $bd + $padX] $y
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incr y [expr $itemH+$padY]
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continue
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} else {
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# this item is not in this row. Arrange the previous items
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# first
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#
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tixIconView:PackOneRow $w $row $y $maxH $bd $padX $padY
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incr y $maxH
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set row ""
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set maxH 0
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set usedW $padX
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}
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}
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lappend row $item
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if {$maxH < $itemH} {
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set maxH $itemH
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}
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incr usedW [expr $padX+$itemW]
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}
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if {$row != ""} {
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tixIconView:PackOneRow $w $row $y $maxH $bd $padX $padY
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}
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}
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#----------------------------------------------------------------------
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#
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# Widget commands
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#----------------------------------------------------------------------
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#----------------------------------------------------------------------
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#
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# Private Methods
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#----------------------------------------------------------------------
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