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586 lines
13 KiB
586 lines
13 KiB
6 years ago
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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: Balloon.tcl,v 1.7 2008/02/27 22:17:28 hobbs Exp $
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#
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# Balloon.tcl --
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#
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# The help widget. It provides both "balloon" type of help
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# message and "status bar" type of help message. You can use
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# this widget to indicate the function of the widgets inside
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# your application.
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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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# Copyright (c) 2004 ActiveState
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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 tixBalloon {
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-classname TixBalloon
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-superclass tixShell
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-method {
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bind post unbind
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}
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-flag {
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-installcolormap -initwait -state -statusbar -cursor
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}
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-configspec {
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{-installcolormap installColormap InstallColormap false}
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{-initwait initWait InitWait 1000}
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{-state state State both}
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{-statusbar statusBar StatusBar ""}
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{-cursor cursor Cursor {}}
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}
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-default {
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{*background #ffff60}
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{*foreground black}
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{*borderWidth 0}
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{.borderWidth 1}
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{.background black}
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{*Label.anchor w}
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{*Label.justify left}
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}
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}
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# static seem to be -installcolormap -initwait -statusbar -cursor
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# Class Record
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#
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global tixBalloon
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set tixBalloon(bals) ""
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proc tixBalloon:InitWidgetRec {w} {
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upvar #0 $w data
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global tixBalloon
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tixChainMethod $w InitWidgetRec
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set data(isActive) 0
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set data(client) ""
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lappend tixBalloon(bals) $w
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}
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proc tixBalloon:ConstructWidget {w} {
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upvar #0 $w data
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tixChainMethod $w ConstructWidget
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if {[tk windowingsystem] eq "aqua"} {
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::tk::unsupported::MacWindowStyle style $w help none
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} else {
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wm overrideredirect $w 1
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}
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catch {wm attributes $w -topmost 1}
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wm positionfrom $w program
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wm withdraw $w
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# Frame 1 : arrow
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frame $w.f1 -bd 0
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set data(w:label) [label $w.f1.lab -bd 0 -relief flat \
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-bitmap [tix getbitmap balarrow]]
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pack $data(w:label) -side left -padx 1 -pady 1
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# Frame 2 : Message
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frame $w.f2 -bd 0
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set data(w:message) [label $w.f2.message -padx 0 -pady 0 -bd 0]
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pack $data(w:message) -side left -expand yes -fill both -padx 10 -pady 1
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# Pack all
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pack $w.f1 -fill both
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pack $w.f2 -fill both
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# This is an event tag used by the clients
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#
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bind TixBal$w <Destroy> [list tixBalloon:ClientDestroy $w %W]
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}
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proc tixBalloon:Destructor {w} {
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global tixBalloon
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set bals ""
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foreach b $tixBalloon(bals) {
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if {$w != $b} {
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lappend bals $b
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}
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}
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set tixBalloon(bals) $bals
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tixChainMethod $w Destructor
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}
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#----------------------------------------------------------------------
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# Config:
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#----------------------------------------------------------------------
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proc tixBalloon:config-state {w value} {
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upvar #0 $w data
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set re {^(none|balloon|status|both)$}
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if {![regexp -- $re $value]} {
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error "invalid value $value, must be none, balloon, status, or both"
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}
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}
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#----------------------------------------------------------------------
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# "RAW" event bindings:
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#----------------------------------------------------------------------
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bind all <B1-Motion> "+tixBalloon_XXMotion %X %Y 1"
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bind all <B2-Motion> "+tixBalloon_XXMotion %X %Y 2"
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bind all <B3-Motion> "+tixBalloon_XXMotion %X %Y 3"
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bind all <B4-Motion> "+tixBalloon_XXMotion %X %Y 4"
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bind all <B5-Motion> "+tixBalloon_XXMotion %X %Y 5"
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bind all <Any-Motion> "+tixBalloon_XXMotion %X %Y 0"
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# Should %b be 0? %b is illegal
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bind all <Leave> "+tixBalloon_XXMotion %X %Y 0"
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bind all <Button> "+tixBalloon_XXButton %X %Y %b"
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bind all <ButtonRelease> "+tixBalloon_XXButtonUp %X %Y %b"
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proc tixBalloon_XXMotion {rootX rootY b} {
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global tixBalloon
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foreach w $tixBalloon(bals) {
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tixBalloon:XXMotion $w $rootX $rootY $b
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}
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}
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proc tixBalloon_XXButton {rootX rootY b} {
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global tixBalloon
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foreach w $tixBalloon(bals) {
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tixBalloon:XXButton $w $rootX $rootY $b
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}
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}
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proc tixBalloon_XXButtonUp {rootX rootY b} {
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global tixBalloon
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foreach w $tixBalloon(bals) {
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tixBalloon:XXButtonUp $w $rootX $rootY $b
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}
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}
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# return true if d is a descendant of w
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#
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proc tixIsDescendant {w d} {
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return [expr {$w eq "." || [string match $w.* $d]}]
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}
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# All the button events are fine if the ballooned widget is
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# a descendant of the grabbing widget
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#
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proc tixBalloon:GrabBad {w cw} {
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global tixBalloon
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set g [grab current $w]
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if {$g == ""} {
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return 0
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}
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if {[info exists tixBalloon(g_ignore,$g)]} {
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return 1
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}
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if {[info exists tixBalloon(g_ignore,[winfo class $g])]} {
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return 1
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}
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if {$g == $cw || [tixIsDescendant $g $cw]} {
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return 0
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}
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return 1
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}
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proc tixBalloon:XXMotion {w rootX rootY b} {
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upvar #0 $w data
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if {![info exists data(-state)]} {
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# puts "tixBalloon:XXMotion called without a state\n$w"
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set data(state) none
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return
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}
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if {$data(-state) eq "none"} {
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return
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}
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if {$b == 0} {
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if {[info exists data(b:1)]} {unset data(b:1)}
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if {[info exists data(b:2)]} {unset data(b:2)}
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if {[info exists data(b:3)]} {unset data(b:3)}
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if {[info exists data(b:4)]} {unset data(b:4)}
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if {[info exists data(b:5)]} {unset data(b:5)}
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}
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if {[llength [array names data b:*]]} {
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# Some buttons are down. Do nothing
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#
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return
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}
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set cw [winfo containing -displayof $w $rootX $rootY]
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if {[tixBalloon:GrabBad $w $cw]} {
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return
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}
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# Find the a client window that matches
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#
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if {$w eq $cw || [string match $w.* $cw]} {
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# Cursor moved over the balloon -- Ignore
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return
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}
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while {$cw != ""} {
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if {[info exists data(m:$cw)]} {
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set client $cw
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break
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} else {
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set cw [winfo parent $cw]
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}
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}
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if {![info exists client]} {
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# The cursor is at a position covered by a non-client
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# Popdown the balloon if it is up
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if {$data(isActive)} {
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tixBalloon:Deactivate $w
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}
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set data(client) ""
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if {[info exists data(cancel)]} {
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unset data(cancel)
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}
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return
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}
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if {$data(client) ne $client} {
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if {$data(isActive)} {
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tixBalloon:Deactivate $w
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}
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set data(client) $client
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after $data(-initwait) tixBalloon:SwitchToClient $w $client
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}
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}
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proc tixBalloon:XXButton {w rootX rootY b} {
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upvar #0 $w data
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tixBalloon:XXMotion $w $rootX $rootY $b
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set data(b:$b) 1
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if {$data(isActive)} {
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tixBalloon:Deactivate $w
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} else {
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set data(cancel) 1
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}
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}
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proc tixBalloon:XXButtonUp {w rootX rootY b} {
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upvar #0 $w data
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tixBalloon:XXMotion $w $rootX $rootY $b
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if {[info exists data(b:$b)]} {
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unset data(b:$b)
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}
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}
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#----------------------------------------------------------------------
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# "COOKED" event bindings:
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#----------------------------------------------------------------------
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# switch the balloon to a new client
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#
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proc tixBalloon:SwitchToClient {w client} {
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upvar #0 $w data
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if {![winfo exists $w]} {
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return
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}
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if {![winfo exists $client]} {
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return
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}
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if {$client ne $data(client)} {
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return
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}
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if {[info exists data(cancel)]} {
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unset data(cancel)
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return
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}
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if {[tixBalloon:GrabBad $w $w]} {
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return
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}
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tixBalloon:Activate $w
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}
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proc tixBalloon:ClientDestroy {w client} {
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if {![winfo exists $w]} {
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return
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}
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upvar #0 $w data
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if {$data(client) eq $client} {
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tixBalloon:Deactivate $w
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set data(client) ""
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}
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# Maybe thses have already been unset by the Destroy method
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#
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if {[info exists data(m:$client)]} {unset data(m:$client)}
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if {[info exists data(s:$client)]} {unset data(s:$client)}
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}
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#----------------------------------------------------------------------
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# Popping up balloon:
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#----------------------------------------------------------------------
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proc tixBalloon:Activate {w} {
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upvar #0 $w data
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if {[tixBalloon:GrabBad $w $w]} {
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return
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}
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if {[winfo containing -displayof $w \
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[winfo pointerx $w] [winfo pointery $w]] == ""} {
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return
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}
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if {![info exists data(-state)]} {
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# puts "tixBalloon:Activate called without a state\n$w"
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set data(state) none
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return
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}
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if {$data(-state) eq "none"} {
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return
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}
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switch -exact -- $data(-state) {
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"both" {
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tixBalloon:PopUp $w
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tixBalloon:SetStatus $w
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}
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"balloon" {
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tixBalloon:PopUp $w
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}
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"status" {
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tixBalloon:SetStatus $w
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}
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}
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set data(isActive) 1
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after 200 tixBalloon:Verify $w
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}
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# %% Perhaps this is no more needed
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#
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proc tixBalloon:Verify {w} {
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upvar #0 $w data
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if {![winfo exists $w]} {
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return
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}
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if {!$data(isActive)} {
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return
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}
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if {[tixBalloon:GrabBad $w $w]} {
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tixBalloon:Deactivate $w
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return
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}
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if {[winfo containing -displayof $w \
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[winfo pointerx $w] [winfo pointery $w]] == ""} {
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tixBalloon:Deactivate $w
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return
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}
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after 200 tixBalloon:Verify $w
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}
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proc tixBalloon:Deactivate {w} {
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upvar #0 $w data
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tixBalloon:PopDown $w
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tixBalloon:ClearStatus $w
|
||
|
|
set data(isActive) 0
|
||
|
|
if {[info exists data(cancel)]} {
|
||
|
|
unset data(cancel)
|
||
|
|
}
|
||
|
|
}
|
||
|
|
|
||
|
|
proc tixBalloon:PopUp {w} {
|
||
|
|
upvar #0 $w data
|
||
|
|
|
||
|
|
if {[string is true -strict $data(-installcolormap)]} {
|
||
|
|
wm colormapwindows [winfo toplevel $data(client)] $w
|
||
|
|
}
|
||
|
|
|
||
|
|
# trick: the following lines allow the balloon window to
|
||
|
|
# acquire a stable width and height when it is finally
|
||
|
|
# put on the visible screen
|
||
|
|
#
|
||
|
|
set client $data(client)
|
||
|
|
if {$data(m:$client) == ""} {return ""}
|
||
|
|
|
||
|
|
$data(w:message) config -text $data(m:$client)
|
||
|
|
wm geometry $w +10000+10000
|
||
|
|
wm deiconify $w
|
||
|
|
raise $w
|
||
|
|
update
|
||
|
|
|
||
|
|
# The windows may become destroyed as a result of the "update" command
|
||
|
|
#
|
||
|
|
if {![winfo exists $w]} {
|
||
|
|
return
|
||
|
|
}
|
||
|
|
if {![winfo exists $client]} {
|
||
|
|
return
|
||
|
|
}
|
||
|
|
# Put it on the visible screen
|
||
|
|
#
|
||
|
|
set x [expr {[winfo rootx $client]+[winfo width $client]/2}]
|
||
|
|
set y [expr {int([winfo rooty $client]+[winfo height $client]/1.3)}]
|
||
|
|
|
||
|
|
set width [winfo reqwidth $w]
|
||
|
|
set height [winfo reqheight $w]
|
||
|
|
set scrwidth [winfo vrootwidth $w]
|
||
|
|
set scrheight [winfo vrootheight $w]
|
||
|
|
|
||
|
|
# If the balloon is too far right, pull it back to the left
|
||
|
|
#
|
||
|
|
if {($x + $width) > $scrwidth} {
|
||
|
|
set x [expr {$scrwidth - $width}]
|
||
|
|
}
|
||
|
|
|
||
|
|
# If the balloon is too far left, pull it back to the right
|
||
|
|
#
|
||
|
|
if {$x < 0} {
|
||
|
|
set x 0
|
||
|
|
}
|
||
|
|
|
||
|
|
# If the listbox is below bottom of screen, put it upwards
|
||
|
|
#
|
||
|
|
if {($y + $height) > $scrheight} {
|
||
|
|
set y [expr {$scrheight-$height}]
|
||
|
|
}
|
||
|
|
if {$y < 0} {
|
||
|
|
set y 0
|
||
|
|
}
|
||
|
|
|
||
|
|
wm geometry $w +$x+$y
|
||
|
|
after idle raise $w
|
||
|
|
}
|
||
|
|
|
||
|
|
proc tixBalloon:PopDown {w} {
|
||
|
|
upvar #0 $w data
|
||
|
|
|
||
|
|
# Close the balloon
|
||
|
|
#
|
||
|
|
wm withdraw $w
|
||
|
|
|
||
|
|
# We don't set the data(client) to be zero, so that the balloon
|
||
|
|
# will re-appear only if you move out then in the client window
|
||
|
|
# set data(client) ""
|
||
|
|
}
|
||
|
|
|
||
|
|
proc tixBalloon:SetStatus {w} {
|
||
|
|
upvar #0 $w data
|
||
|
|
|
||
|
|
if {![winfo exists $data(-statusbar)]
|
||
|
|
|| ![info exists data(s:$data(client))]} {
|
||
|
|
return
|
||
|
|
}
|
||
|
|
|
||
|
|
set vv [$data(-statusbar) cget -textvariable]
|
||
|
|
if {$vv == ""} {
|
||
|
|
$data(-statusbar) config -text $data(s:$data(client))
|
||
|
|
} else {
|
||
|
|
uplevel #0 set $vv [list $data(s:$data(client))]
|
||
|
|
}
|
||
|
|
}
|
||
|
|
|
||
|
|
proc tixBalloon:ClearStatus {w} {
|
||
|
|
upvar #0 $w data
|
||
|
|
|
||
|
|
if {![winfo exists $data(-statusbar)]} {
|
||
|
|
return
|
||
|
|
}
|
||
|
|
|
||
|
|
# Clear the StatusBar widget
|
||
|
|
#
|
||
|
|
set vv [$data(-statusbar) cget -textvariable]
|
||
|
|
if {$vv == ""} {
|
||
|
|
$data(-statusbar) config -text ""
|
||
|
|
} else {
|
||
|
|
uplevel #0 set $vv [list ""]
|
||
|
|
}
|
||
|
|
}
|
||
|
|
|
||
|
|
#----------------------------------------------------------------------
|
||
|
|
# PublicMethods:
|
||
|
|
#----------------------------------------------------------------------
|
||
|
|
|
||
|
|
# %% if balloon is already popped-up for this client, change mesage
|
||
|
|
#
|
||
|
|
proc tixBalloon:bind {w client args} {
|
||
|
|
upvar #0 $w data
|
||
|
|
|
||
|
|
set alreadyBound [info exists data(m:$client)]
|
||
|
|
|
||
|
|
set opt(-balloonmsg) ""
|
||
|
|
set opt(-statusmsg) ""
|
||
|
|
set opt(-msg) ""
|
||
|
|
|
||
|
|
tixHandleOptions opt {-balloonmsg -msg -statusmsg} $args
|
||
|
|
|
||
|
|
if {$opt(-balloonmsg) != ""} {
|
||
|
|
set data(m:$client) $opt(-balloonmsg)
|
||
|
|
} else {
|
||
|
|
set data(m:$client) $opt(-msg)
|
||
|
|
}
|
||
|
|
if {$opt(-statusmsg) != ""} {
|
||
|
|
set data(s:$client) $opt(-statusmsg)
|
||
|
|
} else {
|
||
|
|
set data(s:$client) $opt(-msg)
|
||
|
|
}
|
||
|
|
|
||
|
|
tixAppendBindTag $client TixBal$w
|
||
|
|
}
|
||
|
|
|
||
|
|
proc tixBalloon:post {w client} {
|
||
|
|
upvar #0 $w data
|
||
|
|
|
||
|
|
if {![info exists data(m:$client)] || $data(m:$client) == ""} {
|
||
|
|
return
|
||
|
|
}
|
||
|
|
tixBalloon:Enter $w $client
|
||
|
|
incr data(fakeEnter)
|
||
|
|
}
|
||
|
|
|
||
|
|
proc tixBalloon:unbind {w client} {
|
||
|
|
upvar #0 $w data
|
||
|
|
|
||
|
|
if {[info exists data(m:$client)]} {
|
||
|
|
if {[info exists data(m:$client)]} {unset data(m:$client)}
|
||
|
|
if {[info exists data(s:$client)]} {unset data(s:$client)}
|
||
|
|
|
||
|
|
if {[winfo exists $client]} {
|
||
|
|
catch {tixDeleteBindTag $client TixBal$w}
|
||
|
|
}
|
||
|
|
}
|
||
|
|
}
|
||
|
|
|
||
|
|
#----------------------------------------------------------------------
|
||
|
|
#
|
||
|
|
# Utility function
|
||
|
|
#
|
||
|
|
#----------------------------------------------------------------------
|
||
|
|
#
|
||
|
|
# $w can be a widget name or a classs name
|
||
|
|
proc tixBalIgnoreWhenGrabbed {wc} {
|
||
|
|
global tixBalloon
|
||
|
|
set tixBalloon(g_ignore,$wc) ""
|
||
|
|
}
|
||
|
|
|
||
|
|
tixBalIgnoreWhenGrabbed TixComboBox
|
||
|
|
tixBalIgnoreWhenGrabbed Menu
|
||
|
|
tixBalIgnoreWhenGrabbed Menubutton
|