592 lines
18 KiB
Tcl
592 lines
18 KiB
Tcl
# tk.tcl --
|
||
#
|
||
# Initialization script normally executed in the interpreter for each Tk-based
|
||
# application. Arranges class bindings for widgets.
|
||
#
|
||
# 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.
|
||
|
||
package require Tcl 8.5 ;# Guard against [source] in an 8.4- interp before
|
||
;# using 8.5 [package] features.
|
||
# Insist on running with compatible version of Tcl
|
||
package require Tcl 8.5.0
|
||
# Verify that we have Tk binary and script components from the same release
|
||
package require -exact Tk 8.5.19
|
||
|
||
# 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 [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 $::tk_library msgs]
|
||
}
|
||
}
|
||
namespace import ::tk::msgcat::*
|
||
}
|
||
# and a ::ttk namespace
|
||
namespace eval ::ttk {
|
||
if {$::tk_library ne ""} {
|
||
# avoid file join to work in safe interps, but this is also x-plat ok
|
||
variable library $::tk_library/ttk
|
||
}
|
||
}
|
||
|
||
# Add Ttk & Tk's directory to the end of the auto-load search path, if it
|
||
# isn't already on the path:
|
||
|
||
if {[info exists ::auto_path] && ($::tk_library ne "")
|
||
&& ($::tk_library ni $::auto_path)} {
|
||
lappend ::auto_path $::tk_library $::ttk::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 $w
|
||
update idletasks
|
||
set checkBounds 1
|
||
if {$place eq ""} {
|
||
set x [expr {([winfo screenwidth $w]-[winfo reqwidth $w])/2}]
|
||
set y [expr {([winfo screenheight $w]-[winfo reqheight $w])/2}]
|
||
set checkBounds 0
|
||
} elseif {[string equal -length [string length $place] $place "pointer"]} {
|
||
## place at POINTER (centered if $anchor == center)
|
||
if {[string equal -length [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 -length [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 < [winfo vrootx $w]} {
|
||
set x [winfo vrootx $w]
|
||
} elseif {$x > ([winfo vrootx $w]+[winfo vrootwidth $w]-[winfo reqwidth $w])} {
|
||
set x [expr {[winfo vrootx $w]+[winfo vrootwidth $w]-[winfo reqwidth $w]}]
|
||
}
|
||
if {$y < [winfo vrooty $w]} {
|
||
set y [winfo vrooty $w]
|
||
} elseif {$y > ([winfo vrooty $w]+[winfo vrootheight $w]-[winfo reqheight $w])} {
|
||
set y [expr {[winfo vrooty $w]+[winfo vrootheight $w]-[winfo reqheight $w]}]
|
||
}
|
||
if {[tk windowingsystem] eq "aqua"} {
|
||
# Avoid the native menu bar which sits on top of everything.
|
||
if {$y < 22} { set y 22 }
|
||
}
|
||
}
|
||
wm maxsize $w [winfo vrootwidth $w] [winfo vrootheight $w]
|
||
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 $grab
|
||
if {$destroy eq "withdraw"} {
|
||
wm withdraw $grab
|
||
} else {
|
||
destroy $grab
|
||
}
|
||
if {[winfo exists $oldGrab] && [winfo ismapped $oldGrab]} {
|
||
if {$oldStatus eq "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 {[tk windowingsystem] ne "win32"} {
|
||
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
|
||
}
|
||
|
||
# Ensure that namespace separators never occur in the display name (as
|
||
# they cause problems in variable names). Double-colons exist in some VNC
|
||
# display names. [Bug 2912473]
|
||
set disp [string map {:: _doublecolon_} $disp]
|
||
|
||
uplevel #0 [list upvar #0 ::tk::Priv.$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 $op <<Paste>> <Control-Key-y>
|
||
}
|
||
|
||
#----------------------------------------------------------------------
|
||
# Define common dialogs on platforms where they are not implemented using
|
||
# compiled code.
|
||
#----------------------------------------------------------------------
|
||
|
||
if {![llength [info commands tk_chooseColor]]} {
|
||
proc ::tk_chooseColor {args} {
|
||
return [tk::dialog::color:: {*}$args]
|
||
}
|
||
}
|
||
if {![llength [info commands tk_getOpenFile]]} {
|
||
proc ::tk_getOpenFile {args} {
|
||
if {$::tk_strictMotif} {
|
||
return [tk::MotifFDialog open {*}$args]
|
||
} else {
|
||
return [::tk::dialog::file:: open {*}$args]
|
||
}
|
||
}
|
||
}
|
||
if {![llength [info commands tk_getSaveFile]]} {
|
||
proc ::tk_getSaveFile {args} {
|
||
if {$::tk_strictMotif} {
|
||
return [tk::MotifFDialog save {*}$args]
|
||
} else {
|
||
return [::tk::dialog::file:: save {*}$args]
|
||
}
|
||
}
|
||
}
|
||
if {![llength [info commands tk_messageBox]]} {
|
||
proc ::tk_messageBox {args} {
|
||
return [tk::MessageBox {*}$args]
|
||
}
|
||
}
|
||
if {![llength [info command tk_chooseDirectory]]} {
|
||
proc ::tk_chooseDirectory {args} {
|
||
return [::tk::dialog::file::chooseDir:: {*}$args]
|
||
}
|
||
}
|
||
|
||
#----------------------------------------------------------------------
|
||
# Define the set of common virtual events.
|
||
#----------------------------------------------------------------------
|
||
|
||
switch -exact -- [tk windowingsystem] {
|
||
"x11" {
|
||
event add <<Cut>> <Control-Key-x> <Key-F20> <Control-Lock-Key-X>
|
||
event add <<Copy>> <Control-Key-c> <Key-F16> <Control-Lock-Key-C>
|
||
event add <<Paste>> <Control-Key-v> <Key-F18> <Control-Lock-Key-V>
|
||
event add <<PasteSelection>> <ButtonRelease-2>
|
||
event add <<Undo>> <Control-Key-z> <Control-Lock-Key-Z>
|
||
event add <<Redo>> <Control-Key-Z> <Control-Lock-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 add variable ::tk_strictMotif write ::tk::EventMotifBindings
|
||
set ::tk_strictMotif $::tk_strictMotif
|
||
# On unix, we want to always display entry/text selection, regardless
|
||
# of which window has focus
|
||
set ::tk::AlwaysShowSelection 1
|
||
}
|
||
"win32" {
|
||
event add <<Cut>> <Control-Key-x> <Shift-Key-Delete> \
|
||
<Control-Lock-Key-X>
|
||
event add <<Copy>> <Control-Key-c> <Control-Key-Insert> \
|
||
<Control-Lock-Key-C>
|
||
event add <<Paste>> <Control-Key-v> <Shift-Key-Insert> \
|
||
<Control-Lock-Key-V>
|
||
event add <<PasteSelection>> <ButtonRelease-2>
|
||
event add <<Undo>> <Control-Key-z> <Control-Lock-Key-Z>
|
||
event add <<Redo>> <Control-Key-y> <Control-Lock-Key-Y>
|
||
}
|
||
"aqua" {
|
||
event add <<Cut>> <Command-Key-x> <Key-F2> <Control-Lock-Key-X>
|
||
event add <<Copy>> <Command-Key-c> <Key-F3> <Control-Lock-Key-C>
|
||
event add <<Paste>> <Command-Key-v> <Key-F4> <Control-Lock-Key-V>
|
||
event add <<PasteSelection>> <ButtonRelease-2>
|
||
event add <<Clear>> <Clear>
|
||
event add <<Undo>> <Command-Key-z> <Control-Lock-Key-Z>
|
||
event add <<Redo>> <Command-Key-y> <Control-Lock-Key-Y>
|
||
}
|
||
}
|
||
|
||
# ----------------------------------------------------------------------
|
||
# Read in files that define all of the class bindings.
|
||
# ----------------------------------------------------------------------
|
||
|
||
if {$::tk_library ne ""} {
|
||
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 $Priv(afterId)
|
||
set Priv(afterId) {}
|
||
}
|
||
|
||
# ::tk::TabToWindow --
|
||
# This procedure moves the focus to the given widget.
|
||
# It sends a <<TraverseOut>> virtual event to the previous focus window, if
|
||
# any, before changing the focus, and a <<TraverseIn>> event to the new focus
|
||
# window afterwards.
|
||
#
|
||
# Arguments:
|
||
# w - Window to which focus should be set.
|
||
|
||
proc ::tk::TabToWindow {w} {
|
||
set focus [focus]
|
||
if {$focus ne ""} {
|
||
event generate $focus <<TraverseOut>>
|
||
}
|
||
focus $w
|
||
event generate $w <<TraverseIn>>
|
||
}
|
||
|
||
# ::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 s [string map {&& & & \ufeff} $text]
|
||
set idx [string first \ufeff $s]
|
||
return [list [string map {\ufeff {}} $s] $idx]
|
||
}
|
||
|
||
# ::tk::SetAmpText --
|
||
# Given widget path and text with "magic ampersands", sets -text and
|
||
# -underline options for the widget
|
||
#
|
||
proc ::tk::SetAmpText {widget text} {
|
||
lassign [UnderlineAmpersand $text] newtext under
|
||
$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 options {}
|
||
foreach {opt val} $args {
|
||
if {$opt eq "-text"} {
|
||
lassign [UnderlineAmpersand $val] newtext under
|
||
lappend options -text $newtext -underline $under
|
||
} else {
|
||
lappend options $opt $val
|
||
}
|
||
}
|
||
set result [$class $path {*}$options]
|
||
if {[string match "*button" $class]} {
|
||
bind $path <<AltUnderlined>> [list $path invoke]
|
||
}
|
||
return $result
|
||
}
|
||
|
||
# ::tk::AmpMenuArgs --
|
||
# Processes arguments for a menu entry, turning -label option into -label and
|
||
# -underline options, returned by ::tk::UnderlineAmpersand.
|
||
#
|
||
proc ::tk::AmpMenuArgs {widget add type args} {
|
||
set options {}
|
||
foreach {opt val} $args {
|
||
if {$opt eq "-label"} {
|
||
lassign [UnderlineAmpersand $val] newlabel under
|
||
lappend options -label $newlabel -underline $under
|
||
} else {
|
||
lappend options $opt $val
|
||
}
|
||
}
|
||
$widget add $type {*}$options
|
||
}
|
||
|
||
# ::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 -
|
||
TButton - TLabel - TCheckbutton {
|
||
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]] {
|
||
set target [FindAltKeyTarget $child $char]
|
||
if {$target ne ""} {
|
||
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 [FindAltKeyTarget $path $key]
|
||
if { $target eq ""} 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 {
|
||
# Should we run [mc] in caller's namespace?
|
||
lassign [UnderlineAmpersand [mc $arg]] msg
|
||
set length [string length $msg]
|
||
if {$length > $maxlen} {
|
||
set maxlen $length
|
||
}
|
||
}
|
||
return $maxlen
|
||
}
|
||
|
||
# For now, turn off the custom mdef proc for the mac:
|
||
|
||
if {[tk windowingsystem] eq "aqua"} {
|
||
namespace eval ::tk::mac {
|
||
variable useCustomMDEF 0
|
||
}
|
||
}
|
||
|
||
# Run the Ttk themed widget set initialization
|
||
if {$::ttk::library ne ""} {
|
||
uplevel \#0 [list source [file join $::ttk::library ttk.tcl]]
|
||
}
|
||
|
||
# Local Variables:
|
||
# mode: tcl
|
||
# fill-column: 78
|
||
# End:
|