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- # tk.tcl --
- #
- # Initialization script normally executed in the interpreter for each
- # Tk-based application. Arranges class bindings for widgets.
- #
- # SCCS: @(#) tk.tcl 1.98 97/10/28 15:21:04
- #
- # Copyright (c) 1992-1994 The Regents of the University of California.
- # Copyright (c) 1994-1996 Sun Microsystems, Inc.
- #
- # 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 8.0
- package require -exact Tcl 8.0
-
- # 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]} {
- if {[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
-
- # tkScreenChanged --
- # 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 global variable "tkPriv" 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 tkScreenChanged screen {
- set x [string last . $screen]
- if {$x > 0} {
- set disp [string range $screen 0 [expr $x - 1]]
- } else {
- set disp $screen
- }
-
- uplevel #0 upvar #0 tkPriv.$disp tkPriv
- global tkPriv
- global tcl_platform
-
- if [info exists tkPriv] {
- set tkPriv(screen) $screen
- return
- }
- set tkPriv(activeMenu) {}
- set tkPriv(activeItem) {}
- set tkPriv(afterId) {}
- set tkPriv(buttons) 0
- set tkPriv(buttonWindow) {}
- set tkPriv(dragging) 0
- set tkPriv(focus) {}
- set tkPriv(grab) {}
- set tkPriv(initPos) {}
- set tkPriv(inMenubutton) {}
- set tkPriv(listboxPrev) {}
- set tkPriv(menuBar) {}
- set tkPriv(mouseMoved) 0
- set tkPriv(oldGrab) {}
- set tkPriv(popup) {}
- set tkPriv(postedMb) {}
- set tkPriv(pressX) 0
- set tkPriv(pressY) 0
- set tkPriv(prevPos) 0
- set tkPriv(screen) $screen
- set tkPriv(selectMode) char
- if {[string compare $tcl_platform(platform) "unix"] == 0} {
- set tkPriv(tearoff) 1
- } else {
- set tkPriv(tearoff) 0
- }
- set tkPriv(window) {}
- }
-
- # Do initial setup for tkPriv, 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).
-
- tkScreenChanged [winfo screen .]
-
- # tkEventMotifBindings --
- # 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 tkEventMotifBindings {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 the set of common virtual events.
- #----------------------------------------------------------------------
-
- switch $tcl_platform(platform) {
- "unix" {
- event add <<Cut>> <Control-Key-x> <Key-F20>
- event add <<Copy>> <Control-Key-c> <Key-F16>
- event add <<Paste>> <Control-Key-v> <Key-F18>
- trace variable tk_strictMotif w tkEventMotifBindings
- set tk_strictMotif $tk_strictMotif
- }
- "windows" {
- event add <<Cut>> <Control-Key-x> <Shift-Key-Delete>
- event add <<Copy>> <Control-Key-c> <Control-Key-Insert>
- event add <<Paste>> <Control-Key-v> <Shift-Key-Insert>
- }
- "macintosh" {
- event add <<Cut>> <Control-Key-x> <Key-F2>
- event add <<Copy>> <Control-Key-c> <Key-F3>
- event add <<Paste>> <Control-Key-v> <Key-F4>
- event add <<Clear>> <Clear>
- }
- }
-
- # ----------------------------------------------------------------------
- # Read in files that define all of the class bindings.
- # ----------------------------------------------------------------------
-
- if {$tcl_platform(platform) != "macintosh"} {
- source $tk_library/button.tcl
- source $tk_library/entry.tcl
- source $tk_library/listbox.tcl
- source $tk_library/menu.tcl
- source $tk_library/scale.tcl
- source $tk_library/scrlbar.tcl
- source $tk_library/text.tcl
- }
-
- # ----------------------------------------------------------------------
- # Default bindings for keyboard traversal.
- # ----------------------------------------------------------------------
-
- bind all <Tab> {tkTabToWindow [tk_focusNext %W]}
- bind all <Shift-Tab> {tkTabToWindow [tk_focusPrev %W]}
-
- # tkCancelRepeat --
- # This procedure is invoked to cancel an auto-repeat action described
- # by tkPriv(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 tkCancelRepeat {} {
- global tkPriv
- after cancel $tkPriv(afterId)
- set tkPriv(afterId) {}
- }
-
- # tkTabToWindow --
- # 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 tkTabToWindow {w} {
- if {"[winfo class $w]" == "Entry"} {
- $w select range 0 end
- $w icur end
- }
- focus $w
- }
-