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