button.tcl
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上传日期:2015-12-11
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- # button.tcl --
- #
- # This file defines the default bindings for Tk label, button,
- # checkbutton, and radiobutton widgets and provides procedures
- # that help in implementing those bindings.
- #
- # RCS: @(#) $Id: button.tcl,v 1.17.2.1 2006/01/25 18:21:41 dgp Exp $
- #
- # Copyright (c) 1992-1994 The Regents of the University of California.
- # Copyright (c) 1994-1996 Sun Microsystems, Inc.
- # Copyright (c) 2002 ActiveState Corporation.
- #
- # See the file "license.terms" for information on usage and redistribution
- # of this file, and for a DISCLAIMER OF ALL WARRANTIES.
- #
- #-------------------------------------------------------------------------
- # The code below creates the default class bindings for buttons.
- #-------------------------------------------------------------------------
- if {[tk windowingsystem] eq "classic" || [tk windowingsystem] eq "aqua"} {
- bind Radiobutton <Enter> {
- tk::ButtonEnter %W
- }
- bind Radiobutton <1> {
- tk::ButtonDown %W
- }
- bind Radiobutton <ButtonRelease-1> {
- tk::ButtonUp %W
- }
- bind Checkbutton <Enter> {
- tk::ButtonEnter %W
- }
- bind Checkbutton <1> {
- tk::ButtonDown %W
- }
- bind Checkbutton <ButtonRelease-1> {
- tk::ButtonUp %W
- }
- }
- if {"windows" eq $tcl_platform(platform)} {
- bind Checkbutton <equal> {
- tk::CheckRadioInvoke %W select
- }
- bind Checkbutton <plus> {
- tk::CheckRadioInvoke %W select
- }
- bind Checkbutton <minus> {
- tk::CheckRadioInvoke %W deselect
- }
- bind Checkbutton <1> {
- tk::CheckRadioDown %W
- }
- bind Checkbutton <ButtonRelease-1> {
- tk::ButtonUp %W
- }
- bind Checkbutton <Enter> {
- tk::CheckRadioEnter %W
- }
- bind Radiobutton <1> {
- tk::CheckRadioDown %W
- }
- bind Radiobutton <ButtonRelease-1> {
- tk::ButtonUp %W
- }
- bind Radiobutton <Enter> {
- tk::CheckRadioEnter %W
- }
- }
- if {"x11" eq [tk windowingsystem]} {
- bind Checkbutton <Return> {
- if {!$tk_strictMotif} {
- tk::CheckRadioInvoke %W
- }
- }
- bind Radiobutton <Return> {
- if {!$tk_strictMotif} {
- tk::CheckRadioInvoke %W
- }
- }
- bind Checkbutton <1> {
- tk::CheckRadioInvoke %W
- }
- bind Radiobutton <1> {
- tk::CheckRadioInvoke %W
- }
- bind Checkbutton <Enter> {
- tk::ButtonEnter %W
- }
- bind Radiobutton <Enter> {
- tk::ButtonEnter %W
- }
- }
- bind Button <space> {
- tk::ButtonInvoke %W
- }
- bind Checkbutton <space> {
- tk::CheckRadioInvoke %W
- }
- bind Radiobutton <space> {
- tk::CheckRadioInvoke %W
- }
- bind Button <FocusIn> {}
- bind Button <Enter> {
- tk::ButtonEnter %W
- }
- bind Button <Leave> {
- tk::ButtonLeave %W
- }
- bind Button <1> {
- tk::ButtonDown %W
- }
- bind Button <ButtonRelease-1> {
- tk::ButtonUp %W
- }
- bind Checkbutton <FocusIn> {}
- bind Checkbutton <Leave> {
- tk::ButtonLeave %W
- }
- bind Radiobutton <FocusIn> {}
- bind Radiobutton <Leave> {
- tk::ButtonLeave %W
- }
- if {"windows" eq $tcl_platform(platform)} {
- #########################
- # Windows implementation
- #########################
- # ::tk::ButtonEnter --
- # The procedure below is invoked when the mouse pointer enters a
- # button widget. It records the button we're in and changes the
- # state of the button to active unless the button is disabled.
- #
- # Arguments:
- # w - The name of the widget.
- proc ::tk::ButtonEnter w {
- variable ::tk::Priv
- if {[$w cget -state] ne "disabled"} {
- # If the mouse button is down, set the relief to sunken on entry.
- # Overwise, if there's an -overrelief value, set the relief to that.
- set Priv($w,relief) [$w cget -relief]
- if {$Priv(buttonWindow) eq $w} {
- $w configure -relief sunken -state active
- set Priv($w,prelief) sunken
- } elseif {[set over [$w cget -overrelief]] ne ""} {
- $w configure -relief $over
- set Priv($w,prelief) $over
- }
- }
- set Priv(window) $w
- }
- # ::tk::ButtonLeave --
- # The procedure below is invoked when the mouse pointer leaves a
- # button widget. It changes the state of the button back to inactive.
- # Restore any modified relief too.
- #
- # Arguments:
- # w - The name of the widget.
- proc ::tk::ButtonLeave w {
- variable ::tk::Priv
- if {[$w cget -state] ne "disabled"} {
- $w configure -state normal
- }
- # Restore the original button relief if it was changed by Tk.
- # That is signaled by the existence of Priv($w,prelief).
- if {[info exists Priv($w,relief)]} {
- if {[info exists Priv($w,prelief)] &&
- $Priv($w,prelief) eq [$w cget -relief]} {
- $w configure -relief $Priv($w,relief)
- }
- unset -nocomplain Priv($w,relief) Priv($w,prelief)
- }
- set Priv(window) ""
- }
- # ::tk::ButtonDown --
- # The procedure below is invoked when the mouse button is pressed in
- # a button widget. It records the fact that the mouse is in the button,
- # saves the button's relief so it can be restored later, and changes
- # the relief to sunken.
- #
- # Arguments:
- # w - The name of the widget.
- proc ::tk::ButtonDown w {
- variable ::tk::Priv
- # Only save the button's relief if it does not yet exist. If there
- # is an overrelief setting, Priv($w,relief) will already have been set,
- # and the current value of the -relief option will be incorrect.
- if {![info exists Priv($w,relief)]} {
- set Priv($w,relief) [$w cget -relief]
- }
- if {[$w cget -state] ne "disabled"} {
- set Priv(buttonWindow) $w
- $w configure -relief sunken -state active
- set Priv($w,prelief) sunken
- # If this button has a repeatdelay set up, get it going with an after
- after cancel $Priv(afterId)
- set delay [$w cget -repeatdelay]
- set Priv(repeated) 0
- if {$delay > 0} {
- set Priv(afterId) [after $delay [list tk::ButtonAutoInvoke $w]]
- }
- }
- }
- # ::tk::ButtonUp --
- # The procedure below is invoked when the mouse button is released
- # in a button widget. It restores the button's relief and invokes
- # the command as long as the mouse hasn't left the button.
- #
- # Arguments:
- # w - The name of the widget.
- proc ::tk::ButtonUp w {
- variable ::tk::Priv
- if {$Priv(buttonWindow) eq $w} {
- set Priv(buttonWindow) ""
- # Restore the button's relief if it was cached.
- if {[info exists Priv($w,relief)]} {
- if {[info exists Priv($w,prelief)] &&
- $Priv($w,prelief) eq [$w cget -relief]} {
- $w configure -relief $Priv($w,relief)
- }
- unset -nocomplain Priv($w,relief) Priv($w,prelief)
- }
- # Clean up the after event from the auto-repeater
- after cancel $Priv(afterId)
- if {$Priv(window) eq $w && [$w cget -state] ne "disabled"} {
- $w configure -state normal
- # Only invoke the command if it wasn't already invoked by the
- # auto-repeater functionality
- if { $Priv(repeated) == 0 } {
- uplevel #0 [list $w invoke]
- }
- }
- }
- }
- # ::tk::CheckRadioEnter --
- # The procedure below is invoked when the mouse pointer enters a
- # checkbutton or radiobutton widget. It records the button we're in
- # and changes the state of the button to active unless the button is
- # disabled.
- #
- # Arguments:
- # w - The name of the widget.
- proc ::tk::CheckRadioEnter w {
- variable ::tk::Priv
- if {[$w cget -state] ne "disabled"} {
- if {$Priv(buttonWindow) eq $w} {
- $w configure -state active
- }
- if {[set over [$w cget -overrelief]] ne ""} {
- set Priv($w,relief) [$w cget -relief]
- set Priv($w,prelief) $over
- $w configure -relief $over
- }
- }
- set Priv(window) $w
- }
- # ::tk::CheckRadioDown --
- # The procedure below is invoked when the mouse button is pressed in
- # a button widget. It records the fact that the mouse is in the button,
- # saves the button's relief so it can be restored later, and changes
- # the relief to sunken.
- #
- # Arguments:
- # w - The name of the widget.
- proc ::tk::CheckRadioDown w {
- variable ::tk::Priv
- if {![info exists Priv($w,relief)]} {
- set Priv($w,relief) [$w cget -relief]
- }
- if {[$w cget -state] ne "disabled"} {
- set Priv(buttonWindow) $w
- set Priv(repeated) 0
- $w configure -state active
- }
- }
- }
- if {"x11" eq [tk windowingsystem]} {
- #####################
- # Unix implementation
- #####################
- # ::tk::ButtonEnter --
- # The procedure below is invoked when the mouse pointer enters a
- # button widget. It records the button we're in and changes the
- # state of the button to active unless the button is disabled.
- #
- # Arguments:
- # w - The name of the widget.
- proc ::tk::ButtonEnter {w} {
- variable ::tk::Priv
- if {[$w cget -state] ne "disabled"} {
- # On unix the state is active just with mouse-over
- $w configure -state active
- # If the mouse button is down, set the relief to sunken on entry.
- # Overwise, if there's an -overrelief value, set the relief to that.
- set Priv($w,relief) [$w cget -relief]
- if {$Priv(buttonWindow) eq $w} {
- $w configure -relief sunken
- set Priv($w,prelief) sunken
- } elseif {[set over [$w cget -overrelief]] ne ""} {
- $w configure -relief $over
- set Priv($w,prelief) $over
- }
- }
- set Priv(window) $w
- }
- # ::tk::ButtonLeave --
- # The procedure below is invoked when the mouse pointer leaves a
- # button widget. It changes the state of the button back to inactive.
- # Restore any modified relief too.
- #
- # Arguments:
- # w - The name of the widget.
- proc ::tk::ButtonLeave w {
- variable ::tk::Priv
- if {[$w cget -state] ne "disabled"} {
- $w configure -state normal
- }
- # Restore the original button relief if it was changed by Tk.
- # That is signaled by the existence of Priv($w,prelief).
- if {[info exists Priv($w,relief)]} {
- if {[info exists Priv($w,prelief)] &&
- $Priv($w,prelief) eq [$w cget -relief]} {
- $w configure -relief $Priv($w,relief)
- }
- unset -nocomplain Priv($w,relief) Priv($w,prelief)
- }
- set Priv(window) ""
- }
- # ::tk::ButtonDown --
- # The procedure below is invoked when the mouse button is pressed in
- # a button widget. It records the fact that the mouse is in the button,
- # saves the button's relief so it can be restored later, and changes
- # the relief to sunken.
- #
- # Arguments:
- # w - The name of the widget.
- proc ::tk::ButtonDown w {
- variable ::tk::Priv
- # Only save the button's relief if it does not yet exist. If there
- # is an overrelief setting, Priv($w,relief) will already have been set,
- # and the current value of the -relief option will be incorrect.
- if {![info exists Priv($w,relief)]} {
- set Priv($w,relief) [$w cget -relief]
- }
- if {[$w cget -state] ne "disabled"} {
- set Priv(buttonWindow) $w
- $w configure -relief sunken
- set Priv($w,prelief) sunken
- # If this button has a repeatdelay set up, get it going with an after
- after cancel $Priv(afterId)
- set delay [$w cget -repeatdelay]
- set Priv(repeated) 0
- if {$delay > 0} {
- set Priv(afterId) [after $delay [list tk::ButtonAutoInvoke $w]]
- }
- }
- }
- # ::tk::ButtonUp --
- # The procedure below is invoked when the mouse button is released
- # in a button widget. It restores the button's relief and invokes
- # the command as long as the mouse hasn't left the button.
- #
- # Arguments:
- # w - The name of the widget.
- proc ::tk::ButtonUp w {
- variable ::tk::Priv
- if {$w eq $Priv(buttonWindow)} {
- set Priv(buttonWindow) ""
- # Restore the button's relief if it was cached.
- if {[info exists Priv($w,relief)]} {
- if {[info exists Priv($w,prelief)] &&
- $Priv($w,prelief) eq [$w cget -relief]} {
- $w configure -relief $Priv($w,relief)
- }
- unset -nocomplain Priv($w,relief) Priv($w,prelief)
- }
- # Clean up the after event from the auto-repeater
- after cancel $Priv(afterId)
- if {$Priv(window) eq $w && [$w cget -state] ne "disabled"} {
- # Only invoke the command if it wasn't already invoked by the
- # auto-repeater functionality
- if { $Priv(repeated) == 0 } {
- uplevel #0 [list $w invoke]
- }
- }
- }
- }
- }
- if {[tk windowingsystem] eq "classic" || [tk windowingsystem] eq "aqua"} {
- ####################
- # Mac implementation
- ####################
- # ::tk::ButtonEnter --
- # The procedure below is invoked when the mouse pointer enters a
- # button widget. It records the button we're in and changes the
- # state of the button to active unless the button is disabled.
- #
- # Arguments:
- # w - The name of the widget.
- proc ::tk::ButtonEnter {w} {
- variable ::tk::Priv
- if {[$w cget -state] ne "disabled"} {
- # If there's an -overrelief value, set the relief to that.
- if {$Priv(buttonWindow) eq $w} {
- $w configure -state active
- } elseif {[set over [$w cget -overrelief]] ne ""} {
- set Priv($w,relief) [$w cget -relief]
- set Priv($w,prelief) $over
- $w configure -relief $over
- }
- }
- set Priv(window) $w
- }
- # ::tk::ButtonLeave --
- # The procedure below is invoked when the mouse pointer leaves a
- # button widget. It changes the state of the button back to
- # inactive. If we're leaving the button window with a mouse button
- # pressed (Priv(buttonWindow) == $w), restore the relief of the
- # button too.
- #
- # Arguments:
- # w - The name of the widget.
- proc ::tk::ButtonLeave w {
- variable ::tk::Priv
- if {$w eq $Priv(buttonWindow)} {
- $w configure -state normal
- }
- # Restore the original button relief if it was changed by Tk.
- # That is signaled by the existence of Priv($w,prelief).
- if {[info exists Priv($w,relief)]} {
- if {[info exists Priv($w,prelief)] &&
- $Priv($w,prelief) eq [$w cget -relief]} {
- $w configure -relief $Priv($w,relief)
- }
- unset -nocomplain Priv($w,relief) Priv($w,prelief)
- }
- set Priv(window) ""
- }
- # ::tk::ButtonDown --
- # The procedure below is invoked when the mouse button is pressed in
- # a button widget. It records the fact that the mouse is in the button,
- # saves the button's relief so it can be restored later, and changes
- # the relief to sunken.
- #
- # Arguments:
- # w - The name of the widget.
- proc ::tk::ButtonDown w {
- variable ::tk::Priv
- if {[$w cget -state] ne "disabled"} {
- set Priv(buttonWindow) $w
- $w configure -state active
- # If this button has a repeatdelay set up, get it going with an after
- after cancel $Priv(afterId)
- set Priv(repeated) 0
- if { ![catch {$w cget -repeatdelay} delay] } {
- if {$delay > 0} {
- set Priv(afterId) [after $delay [list tk::ButtonAutoInvoke $w]]
- }
- }
- }
- }
- # ::tk::ButtonUp --
- # The procedure below is invoked when the mouse button is released
- # in a button widget. It restores the button's relief and invokes
- # the command as long as the mouse hasn't left the button.
- #
- # Arguments:
- # w - The name of the widget.
- proc ::tk::ButtonUp w {
- variable ::tk::Priv
- if {$Priv(buttonWindow) eq $w} {
- set Priv(buttonWindow) ""
- $w configure -state normal
- # Restore the button's relief if it was cached.
- if {[info exists Priv($w,relief)]} {
- if {[info exists Priv($w,prelief)] &&
- $Priv($w,prelief) eq [$w cget -relief]} {
- $w configure -relief $Priv($w,relief)
- }
- unset -nocomplain Priv($w,relief) Priv($w,prelief)
- }
- # Clean up the after event from the auto-repeater
- after cancel $Priv(afterId)
- if {$Priv(window) eq $w && [$w cget -state] ne "disabled"} {
- # Only invoke the command if it wasn't already invoked by the
- # auto-repeater functionality
- if { $Priv(repeated) == 0 } {
- uplevel #0 [list $w invoke]
- }
- }
- }
- }
- }
- ##################
- # Shared routines
- ##################
- # ::tk::ButtonInvoke --
- # The procedure below is called when a button is invoked through
- # the keyboard. It simulate a press of the button via the mouse.
- #
- # Arguments:
- # w - The name of the widget.
- proc ::tk::ButtonInvoke w {
- if {[$w cget -state] ne "disabled"} {
- set oldRelief [$w cget -relief]
- set oldState [$w cget -state]
- $w configure -state active -relief sunken
- update idletasks
- after 100
- $w configure -state $oldState -relief $oldRelief
- uplevel #0 [list $w invoke]
- }
- }
- # ::tk::ButtonAutoInvoke --
- #
- # Invoke an auto-repeating button, and set it up to continue to repeat.
- #
- # Arguments:
- # w button to invoke.
- #
- # Results:
- # None.
- #
- # Side effects:
- # May create an after event to call ::tk::ButtonAutoInvoke.
- proc ::tk::ButtonAutoInvoke {w} {
- variable ::tk::Priv
- after cancel $Priv(afterId)
- set delay [$w cget -repeatinterval]
- if {$Priv(window) eq $w} {
- incr Priv(repeated)
- uplevel #0 [list $w invoke]
- }
- if {$delay > 0} {
- set Priv(afterId) [after $delay [list tk::ButtonAutoInvoke $w]]
- }
- }
- # ::tk::CheckRadioInvoke --
- # The procedure below is invoked when the mouse button is pressed in
- # a checkbutton or radiobutton widget, or when the widget is invoked
- # through the keyboard. It invokes the widget if it
- # isn't disabled.
- #
- # Arguments:
- # w - The name of the widget.
- # cmd - The subcommand to invoke (one of invoke, select, or deselect).
- proc ::tk::CheckRadioInvoke {w {cmd invoke}} {
- if {[$w cget -state] ne "disabled"} {
- uplevel #0 [list $w $cmd]
- }
- }