86 lines
2.9 KiB
Tcl
86 lines
2.9 KiB
Tcl
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# button.tcl --
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#
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# This file contains Tcl procedures used to manage Tk buttons.
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#
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# $Header: /user6/ouster/wish/library/RCS/button.tcl,v 1.9 93/07/01 13:41:53 ouster Exp $ SPRITE (Berkeley)
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#
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# Copyright (c) 1992-1993 The Regents of the University of California.
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# All rights reserved.
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#
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# Permission is hereby granted, without written agreement and without
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# license or royalty fees, to use, copy, modify, and distribute this
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# software and its documentation for any purpose, provided that the
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# above copyright notice and the following two paragraphs appear in
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# all copies of this software.
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#
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# IN NO EVENT SHALL THE UNIVERSITY OF CALIFORNIA BE LIABLE TO ANY PARTY FOR
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# DIRECT, INDIRECT, SPECIAL, INCIDENTAL, OR CONSEQUENTIAL DAMAGES ARISING OUT
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# OF THE USE OF THIS SOFTWARE AND ITS DOCUMENTATION, EVEN IF THE UNIVERSITY OF
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# CALIFORNIA HAS BEEN ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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#
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# THE UNIVERSITY OF CALIFORNIA SPECIFICALLY DISCLAIMS ANY WARRANTIES,
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# INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY
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# AND FITNESS FOR A PARTICULAR PURPOSE. THE SOFTWARE PROVIDED HEREUNDER IS
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# ON AN "AS IS" BASIS, AND THE UNIVERSITY OF CALIFORNIA HAS NO OBLIGATION TO
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# PROVIDE MAINTENANCE, SUPPORT, UPDATES, ENHANCEMENTS, OR MODIFICATIONS.
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#
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# The procedure below is invoked when the mouse pointer enters a
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# button widget. It records the button we're in and changes the
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# state of the button to active unless the button is disabled.
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proc tk_butEnter w {
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global tk_priv tk_strictMotif
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if {[lindex [$w config -state] 4] != "disabled"} {
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if {!$tk_strictMotif} {
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$w config -state active
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}
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set tk_priv(window) $w
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}
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}
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# The procedure below is invoked when the mouse pointer leaves a
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# button widget. It changes the state of the button back to
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# inactive.
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proc tk_butLeave w {
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global tk_priv tk_strictMotif
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if {[lindex [$w config -state] 4] != "disabled"} {
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if {!$tk_strictMotif} {
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$w config -state normal
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}
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}
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set tk_priv(window) ""
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}
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# The procedure below is invoked when the mouse button is pressed in
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# a button/radiobutton/checkbutton widget. It records information
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# (a) to indicate that the mouse is in the button, and
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# (b) to save the button's relief so it can be restored later.
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proc tk_butDown w {
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global tk_priv
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set tk_priv(relief) [lindex [$w config -relief] 4]
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set tk_priv(buttonWindow) $w
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if {[lindex [$w config -state] 4] != "disabled"} {
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$w config -relief sunken
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}
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}
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# The procedure below is invoked when the mouse button is released
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# for a button/radiobutton/checkbutton widget. It restores the
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# button's relief and invokes the command as long as the mouse
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# hasn't left the button.
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proc tk_butUp w {
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global tk_priv
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if {$w == $tk_priv(buttonWindow)} {
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$w config -relief $tk_priv(relief)
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if {($w == $tk_priv(window))
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&& ([lindex [$w config -state] 4] != "disabled")} {
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uplevel #0 [list $w invoke]
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}
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set tk_priv(buttonWindow) ""
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}
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}
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