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add missing break in switch
[micropolis] / src / tk / library / button.tcl
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1# button.tcl --
2#
3# This file contains Tcl procedures used to manage Tk buttons.
4#
5# $Header: /user6/ouster/wish/scripts/RCS/button.tcl,v 1.7 92/07/28 15:41:13 ouster Exp $ SPRITE (Berkeley)
6#
7# Copyright 1992 Regents of the University of California
8# Permission to use, copy, modify, and distribute this
9# software and its documentation for any purpose and without
10# fee is hereby granted, provided that this copyright
11# notice appears in all copies. The University of California
12# makes no representations about the suitability of this
13# software for any purpose. It is provided "as is" without
14# express or implied warranty.
15#
16
17# The procedure below is invoked when the mouse pointer enters a
18# button widget. It records the button we're in and changes the
19# state of the button to active unless the button is disabled.
20
21proc tk_butEnter w {
22 global tk_priv tk_strictMotif
23 if {[lindex [$w config -state] 4] != "disabled"} {
24 if {!$tk_strictMotif} {
25 $w config -state active
26 }
27 set tk_priv(window) $w
28 }
29}
30
31# The procedure below is invoked when the mouse pointer leaves a
32# button widget. It changes the state of the button back to
33# inactive.
34
35proc tk_butLeave w {
36 global tk_priv tk_strictMotif
37 if {[lindex [$w config -state] 4] != "disabled"} {
38 if {!$tk_strictMotif} {
39 $w config -state normal
40 }
41 }
42 set tk_priv(window) ""
43}
44
45# The procedure below is invoked when the mouse button is pressed in
46# a button/radiobutton/checkbutton widget. It records information
47# (a) to indicate that the mouse is in the button, and
48# (b) to save the button's relief so it can be restored later.
49
50proc tk_butDown w {
51 global tk_priv
52 set tk_priv(relief) [lindex [$w config -relief] 4]
53 if {[lindex [$w config -state] 4] != "disabled"} {
54 $w config -relief sunken
55 }
56}
57
58# The procedure below is invoked when the mouse button is released
59# for a button/radiobutton/checkbutton widget. It restores the
60# button's relief and invokes the command as long as the mouse
61# hasn't left the button.
62
63proc tk_butUp w {
64 global tk_priv
65 $w config -relief $tk_priv(relief)
66 if {($w == $tk_priv(window))
67 && ([lindex [$w config -state] 4] != "disabled")} {
68 uplevel #0 [list $w invoke]
69 }
70}
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