--- /dev/null
+# tk.tcl --
+#
+# Initialization script normally executed in the interpreter for each
+# Tk-based application. Arranges class bindings for widgets.
+#
+# RCS: @(#) $Id$
+#
+# Copyright (c) 1992-1994 The Regents of the University of California.
+# Copyright (c) 1994-1996 Sun Microsystems, Inc.
+# Copyright (c) 1998-2000 Ajuba Solutions.
+#
+# See the file "license.terms" for information on usage and redistribution
+# of this file, and for a DISCLAIMER OF ALL WARRANTIES.
+
+# Insist on running with compatible versions of Tcl and Tk.
+package require -exact Tk 8.4
+package require -exact Tcl 8.4
+
+# Create a ::tk namespace
+namespace eval ::tk {
+ # Set up the msgcat commands
+ namespace eval msgcat {
+ namespace export mc mcmax
+ if {[interp issafe] || [catch {package require msgcat}]} {
+ # The msgcat package is not available. Supply our own
+ # minimal replacement.
+ proc mc {src args} {
+ return [eval [list format $src] $args]
+ }
+ proc mcmax {args} {
+ set max 0
+ foreach string $args {
+ set len [string length $string]
+ if {$len>$max} {
+ set max $len
+ }
+ }
+ return $max
+ }
+ } else {
+ # Get the commands from the msgcat package that Tk uses.
+ namespace import ::msgcat::mc
+ namespace import ::msgcat::mcmax
+ ::msgcat::mcload [file join $::tk_library msgs]
+ }
+ }
+ namespace import ::tk::msgcat::*
+}
+
+# Add Tk's directory to the end of the auto-load search path, if it
+# isn't already on the path:
+
+if {[info exists ::auto_path] && [string compare {} $::tk_library] && \
+ [lsearch -exact $::auto_path $::tk_library] < 0} {
+ lappend ::auto_path $::tk_library
+}
+
+# Turn off strict Motif look and feel as a default.
+
+set ::tk_strictMotif 0
+
+# Turn on useinputmethods (X Input Methods) by default.
+# We catch this because safe interpreters may not allow the call.
+
+catch {tk useinputmethods 1}
+
+# ::tk::PlaceWindow --
+# place a toplevel at a particular position
+# Arguments:
+# toplevel name of toplevel window
+# ?placement? pointer ?center? ; places $w centered on the pointer
+# widget widgetPath ; centers $w over widget_name
+# defaults to placing toplevel in the middle of the screen
+# ?anchor? center or widgetPath
+# Results:
+# Returns nothing
+#
+proc ::tk::PlaceWindow {w {place ""} {anchor ""}} {
+ wm withdraw $w
+ update idletasks
+ set checkBounds 1
+ if {[string equal -len [string length $place] $place "pointer"]} {
+ ## place at POINTER (centered if $anchor == center)
+ if {[string equal -len [string length $anchor] $anchor "center"]} {
+ set x [expr {[winfo pointerx $w]-[winfo reqwidth $w]/2}]
+ set y [expr {[winfo pointery $w]-[winfo reqheight $w]/2}]
+ } else {
+ set x [winfo pointerx $w]
+ set y [winfo pointery $w]
+ }
+ } elseif {[string equal -len [string length $place] $place "widget"] && \
+ [winfo exists $anchor] && [winfo ismapped $anchor]} {
+ ## center about WIDGET $anchor, widget must be mapped
+ set x [expr {[winfo rootx $anchor] + \
+ ([winfo width $anchor]-[winfo reqwidth $w])/2}]
+ set y [expr {[winfo rooty $anchor] + \
+ ([winfo height $anchor]-[winfo reqheight $w])/2}]
+ } else {
+ set x [expr {([winfo screenwidth $w]-[winfo reqwidth $w])/2}]
+ set y [expr {([winfo screenheight $w]-[winfo reqheight $w])/2}]
+ set checkBounds 0
+ }
+ if {$checkBounds} {
+ if {$x < 0} {
+ set x 0
+ } elseif {$x > ([winfo screenwidth $w]-[winfo reqwidth $w])} {
+ set x [expr {[winfo screenwidth $w]-[winfo reqwidth $w]}]
+ }
+ if {$y < 0} {
+ set y 0
+ } elseif {$y > ([winfo screenheight $w]-[winfo reqheight $w])} {
+ set y [expr {[winfo screenheight $w]-[winfo reqheight $w]}]
+ }
+ if {[tk windowingsystem] eq "macintosh" \
+ || [tk windowingsystem] eq "aqua"} {
+ # Avoid the native menu bar which sits on top of everything.
+ if {$y < 20} { set y 20 }
+ }
+ }
+ wm geometry $w +$x+$y
+ wm deiconify $w
+}
+
+# ::tk::SetFocusGrab --
+# swap out current focus and grab temporarily (for dialogs)
+# Arguments:
+# grab new window to grab
+# focus window to give focus to
+# Results:
+# Returns nothing
+#
+proc ::tk::SetFocusGrab {grab {focus {}}} {
+ set index "$grab,$focus"
+ upvar ::tk::FocusGrab($index) data
+
+ lappend data [focus]
+ set oldGrab [grab current $grab]
+ lappend data $oldGrab
+ if {[winfo exists $oldGrab]} {
+ lappend data [grab status $oldGrab]
+ }
+ # The "grab" command will fail if another application
+ # already holds the grab. So catch it.
+ catch {grab $grab}
+ if {[winfo exists $focus]} {
+ focus $focus
+ }
+}
+
+# ::tk::RestoreFocusGrab --
+# restore old focus and grab (for dialogs)
+# Arguments:
+# grab window that had taken grab
+# focus window that had taken focus
+# destroy destroy|withdraw - how to handle the old grabbed window
+# Results:
+# Returns nothing
+#
+proc ::tk::RestoreFocusGrab {grab focus {destroy destroy}} {
+ set index "$grab,$focus"
+ if {[info exists ::tk::FocusGrab($index)]} {
+ foreach {oldFocus oldGrab oldStatus} $::tk::FocusGrab($index) { break }
+ unset ::tk::FocusGrab($index)
+ } else {
+ set oldGrab ""
+ }
+
+ catch {focus $oldFocus}
+ grab release $grab
+ if {[string equal $destroy "withdraw"]} {
+ wm withdraw $grab
+ } else {
+ destroy $grab
+ }
+ if {[winfo exists $oldGrab] && [winfo ismapped $oldGrab]} {
+ if {[string equal $oldStatus "global"]} {
+ grab -global $oldGrab
+ } else {
+ grab $oldGrab
+ }
+ }
+}
+
+# ::tk::GetSelection --
+# This tries to obtain the default selection. On Unix, we first try
+# and get a UTF8_STRING, a type supported by modern Unix apps for
+# passing Unicode data safely. We fall back on the default STRING
+# type otherwise. On Windows, only the STRING type is necessary.
+# Arguments:
+# w The widget for which the selection will be retrieved.
+# Important for the -displayof property.
+# sel The source of the selection (PRIMARY or CLIPBOARD)
+# Results:
+# Returns the selection, or an error if none could be found
+#
+if {[string equal $tcl_platform(platform) "unix"]} {
+ proc ::tk::GetSelection {w {sel PRIMARY}} {
+ if {[catch {selection get -displayof $w -selection $sel \
+ -type UTF8_STRING} txt] \
+ && [catch {selection get -displayof $w -selection $sel} txt]} {
+ return -code error "could not find default selection"
+ } else {
+ return $txt
+ }
+ }
+} else {
+ proc ::tk::GetSelection {w {sel PRIMARY}} {
+ if {[catch {selection get -displayof $w -selection $sel} txt]} {
+ return -code error "could not find default selection"
+ } else {
+ return $txt
+ }
+ }
+}
+
+# ::tk::ScreenChanged --
+# This procedure is invoked by the binding mechanism whenever the
+# "current" screen is changing. The procedure does two things.
+# First, it uses "upvar" to make variable "::tk::Priv" point at an
+# array variable that holds state for the current display. Second,
+# it initializes the array if it didn't already exist.
+#
+# Arguments:
+# screen - The name of the new screen.
+
+proc ::tk::ScreenChanged screen {
+ set x [string last . $screen]
+ if {$x > 0} {
+ set disp [string range $screen 0 [expr {$x - 1}]]
+ } else {
+ set disp $screen
+ }
+
+ uplevel #0 upvar #0 ::tk::Priv.$disp ::tk::Priv
+ variable ::tk::Priv
+ global tcl_platform
+
+ if {[info exists Priv]} {
+ set Priv(screen) $screen
+ return
+ }
+ array set Priv {
+ activeMenu {}
+ activeItem {}
+ afterId {}
+ buttons 0
+ buttonWindow {}
+ dragging 0
+ focus {}
+ grab {}
+ initPos {}
+ inMenubutton {}
+ listboxPrev {}
+ menuBar {}
+ mouseMoved 0
+ oldGrab {}
+ popup {}
+ postedMb {}
+ pressX 0
+ pressY 0
+ prevPos 0
+ selectMode char
+ }
+ set Priv(screen) $screen
+ set Priv(tearoff) [string equal [tk windowingsystem] "x11"]
+ set Priv(window) {}
+}
+
+# Do initial setup for Priv, so that it is always bound to something
+# (otherwise, if someone references it, it may get set to a non-upvar-ed
+# value, which will cause trouble later).
+
+tk::ScreenChanged [winfo screen .]
+
+# ::tk::EventMotifBindings --
+# This procedure is invoked as a trace whenever ::tk_strictMotif is
+# changed. It is used to turn on or turn off the motif virtual
+# bindings.
+#
+# Arguments:
+# n1 - the name of the variable being changed ("::tk_strictMotif").
+
+proc ::tk::EventMotifBindings {n1 dummy dummy} {
+ upvar $n1 name
+
+ if {$name} {
+ set op delete
+ } else {
+ set op add
+ }
+
+ event $op <<Cut>> <Control-Key-w>
+ event $op <<Copy>> <Meta-Key-w>
+ event $op <<Paste>> <Control-Key-y>
+ event $op <<Undo>> <Control-underscore>
+}
+
+#----------------------------------------------------------------------
+# Define common dialogs on platforms where they are not implemented
+# using compiled code.
+#----------------------------------------------------------------------
+
+if {[string equal [info commands tk_chooseColor] ""]} {
+ proc ::tk_chooseColor {args} {
+ return [eval tk::dialog::color:: $args]
+ }
+}
+if {[string equal [info commands tk_getOpenFile] ""]} {
+ proc ::tk_getOpenFile {args} {
+ if {$::tk_strictMotif} {
+ return [eval tk::MotifFDialog open $args]
+ } else {
+ return [eval ::tk::dialog::file:: open $args]
+ }
+ }
+}
+if {[string equal [info commands tk_getSaveFile] ""]} {
+ proc ::tk_getSaveFile {args} {
+ if {$::tk_strictMotif} {
+ return [eval tk::MotifFDialog save $args]
+ } else {
+ return [eval ::tk::dialog::file:: save $args]
+ }
+ }
+}
+if {[string equal [info commands tk_messageBox] ""]} {
+ proc ::tk_messageBox {args} {
+ return [eval tk::MessageBox $args]
+ }
+}
+if {[string equal [info command tk_chooseDirectory] ""]} {
+ proc ::tk_chooseDirectory {args} {
+ return [eval ::tk::dialog::file::chooseDir:: $args]
+ }
+}
+
+#----------------------------------------------------------------------
+# Define the set of common virtual events.
+#----------------------------------------------------------------------
+
+switch [tk windowingsystem] {
+ "x11" {
+ event add <<Cut>> <Control-Key-x> <Key-F20>
+ event add <<Copy>> <Control-Key-c> <Key-F16>
+ event add <<Paste>> <Control-Key-v> <Key-F18>
+ event add <<PasteSelection>> <ButtonRelease-2>
+ event add <<Undo>> <Control-Key-z>
+ event add <<Redo>> <Control-Key-Z>
+ # Some OS's define a goofy (as in, not <Shift-Tab>) keysym
+ # that is returned when the user presses <Shift-Tab>. In order for
+ # tab traversal to work, we have to add these keysyms to the
+ # PrevWindow event.
+ # We use catch just in case the keysym isn't recognized.
+ # This is needed for XFree86 systems
+ catch { event add <<PrevWindow>> <ISO_Left_Tab> }
+ # This seems to be correct on *some* HP systems.
+ catch { event add <<PrevWindow>> <hpBackTab> }
+
+ trace variable ::tk_strictMotif w ::tk::EventMotifBindings
+ set ::tk_strictMotif $::tk_strictMotif
+ }
+ "win32" {
+ event add <<Cut>> <Control-Key-x> <Shift-Key-Delete>
+ event add <<Copy>> <Control-Key-c> <Control-Key-Insert>
+ event add <<Paste>> <Control-Key-v> <Shift-Key-Insert>
+ event add <<PasteSelection>> <ButtonRelease-2>
+ event add <<Undo>> <Control-Key-z>
+ event add <<Redo>> <Control-Key-y>
+ }
+ "aqua" {
+ event add <<Cut>> <Command-Key-x> <Key-F2>
+ event add <<Copy>> <Command-Key-c> <Key-F3>
+ event add <<Paste>> <Command-Key-v> <Key-F4>
+ event add <<PasteSelection>> <ButtonRelease-2>
+ event add <<Clear>> <Clear>
+ event add <<Undo>> <Command-Key-z>
+ event add <<Redo>> <Command-Key-y>
+ }
+ "classic" {
+ event add <<Cut>> <Control-Key-x> <Key-F2>
+ event add <<Copy>> <Control-Key-c> <Key-F3>
+ event add <<Paste>> <Control-Key-v> <Key-F4>
+ event add <<PasteSelection>> <ButtonRelease-2>
+ event add <<Clear>> <Clear>
+ event add <<Undo>> <Control-Key-z> <Key-F1>
+ event add <<Redo>> <Control-Key-Z>
+ }
+}
+# ----------------------------------------------------------------------
+# Read in files that define all of the class bindings.
+# ----------------------------------------------------------------------
+
+if {$::tk_library ne ""} {
+ if {[string equal $tcl_platform(platform) "macintosh"]} {
+ proc ::tk::SourceLibFile {file} {
+ if {[catch {
+ namespace eval :: \
+ [list source [file join $::tk_library $file.tcl]]
+ }]} {
+ namespace eval :: [list source -rsrc $file]
+ }
+ }
+ } else {
+ proc ::tk::SourceLibFile {file} {
+ namespace eval :: [list source [file join $::tk_library $file.tcl]]
+ }
+ }
+ namespace eval ::tk {
+ SourceLibFile button
+ SourceLibFile entry
+ SourceLibFile listbox
+ SourceLibFile menu
+ SourceLibFile panedwindow
+ SourceLibFile scale
+ SourceLibFile scrlbar
+ SourceLibFile spinbox
+ SourceLibFile text
+ }
+}
+# ----------------------------------------------------------------------
+# Default bindings for keyboard traversal.
+# ----------------------------------------------------------------------
+
+event add <<PrevWindow>> <Shift-Tab>
+bind all <Tab> {tk::TabToWindow [tk_focusNext %W]}
+bind all <<PrevWindow>> {tk::TabToWindow [tk_focusPrev %W]}
+
+# ::tk::CancelRepeat --
+# This procedure is invoked to cancel an auto-repeat action described
+# by ::tk::Priv(afterId). It's used by several widgets to auto-scroll
+# the widget when the mouse is dragged out of the widget with a
+# button pressed.
+#
+# Arguments:
+# None.
+
+proc ::tk::CancelRepeat {} {
+ variable ::tk::Priv
+ after cancel $Priv(afterId)
+ set Priv(afterId) {}
+}
+
+# ::tk::TabToWindow --
+# This procedure moves the focus to the given widget. If the widget
+# is an entry, it selects the entire contents of the widget.
+#
+# Arguments:
+# w - Window to which focus should be set.
+
+proc ::tk::TabToWindow {w} {
+ if {[string equal [winfo class $w] Entry]} {
+ $w selection range 0 end
+ $w icursor end
+ }
+ focus $w
+}
+
+# ::tk::UnderlineAmpersand --
+# This procedure takes some text with ampersand and returns
+# text w/o ampersand and position of the ampersand.
+# Double ampersands are converted to single ones.
+# Position returned is -1 when there is no ampersand.
+#
+proc ::tk::UnderlineAmpersand {text} {
+ set idx [string first "&" $text]
+ if {$idx >= 0} {
+ set underline $idx
+ # ignore "&&"
+ while {[string match "&" [string index $text [expr {$idx + 1}]]]} {
+ set base [expr {$idx + 2}]
+ set idx [string first "&" [string range $text $base end]]
+ if {$idx < 0} {
+ break
+ } else {
+ set underline [expr {$underline + $idx + 1}]
+ incr idx $base
+ }
+ }
+ }
+ if {$idx >= 0} {
+ regsub -all -- {&([^&])} $text {\1} text
+ }
+ return [list $text $idx]
+}
+
+# ::tk::SetAmpText --
+# Given widget path and text with "magic ampersands",
+# sets -text and -underline options for the widget
+#
+proc ::tk::SetAmpText {widget text} {
+ foreach {newtext under} [::tk::UnderlineAmpersand $text] {
+ $widget configure -text $newtext -underline $under
+ }
+}
+
+# ::tk::AmpWidget --
+# Creates new widget, turning -text option into -text and
+# -underline options, returned by ::tk::UnderlineAmpersand.
+#
+proc ::tk::AmpWidget {class path args} {
+ set wcmd [list $class $path]
+ foreach {opt val} $args {
+ if {[string equal $opt {-text}]} {
+ foreach {newtext under} [::tk::UnderlineAmpersand $val] {
+ lappend wcmd -text $newtext -underline $under
+ }
+ } else {
+ lappend wcmd $opt $val
+ }
+ }
+ eval $wcmd
+ if {$class=="button"} {
+ bind $path <<AltUnderlined>> [list $path invoke]
+ }
+ return $path
+}
+
+# ::tk::FindAltKeyTarget --
+# search recursively through the hierarchy of visible widgets
+# to find button or label which has $char as underlined character
+#
+proc ::tk::FindAltKeyTarget {path char} {
+ switch [winfo class $path] {
+ Button -
+ Label {
+ if {[string equal -nocase $char \
+ [string index [$path cget -text] \
+ [$path cget -underline]]]} {return $path} else {return {}}
+ }
+ default {
+ foreach child \
+ [concat [grid slaves $path] \
+ [pack slaves $path] \
+ [place slaves $path] ] {
+ if {""!=[set target [::tk::FindAltKeyTarget $child $char]]} {
+ return $target
+ }
+ }
+ }
+ }
+ return {}
+}
+
+# ::tk::AltKeyInDialog --
+# <Alt-Key> event handler for standard dialogs. Sends <<AltUnderlined>>
+# to button or label which has appropriate underlined character
+#
+proc ::tk::AltKeyInDialog {path key} {
+ set target [::tk::FindAltKeyTarget $path $key]
+ if { $target == ""} return
+ event generate $target <<AltUnderlined>>
+}
+
+# ::tk::mcmaxamp --
+# Replacement for mcmax, used for texts with "magic ampersand" in it.
+#
+
+proc ::tk::mcmaxamp {args} {
+ set maxlen 0
+ foreach arg $args {
+ set length [string length [lindex [::tk::UnderlineAmpersand [mc $arg]] 0]]
+ if {$length>$maxlen} {
+ set maxlen $length
+ }
+ }
+ return $maxlen
+}
+# For now, turn off the custom mdef proc for the mac:
+
+if {[string equal [tk windowingsystem] "aqua"]} {
+ namespace eval ::tk::mac {
+ set useCustomMDEF 0
+ }
+}
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