1 files changed, 148 insertions, 0 deletions
diff --git a/Master/tlpkg/tlperl/lib/Tk/Button.pm b/Master/tlpkg/tlperl/lib/Tk/Button.pm
new file mode 100644
index 00000000000..efa597dee14
--- /dev/null
+++ b/Master/tlpkg/tlperl/lib/Tk/Button.pm
@@ -0,0 +1,148 @@
+package Tk::Button;
+# Conversion from Tk4.0 button.tcl competed.
+#
+# Copyright (c) 1992-1994 The Regents of the University of California.
+# Copyright (c) 1994 Sun Microsystems, Inc.
+# Copyright (c) 1995-2003 Nick Ing-Simmons. All rights reserved.
+# This program is free software; you can redistribute it and/or
+
+use vars qw($VERSION);
+$VERSION = '4.008'; # $Id: //depot/Tkutf8/Tk/Button.pm#8 $
+
+# modify it under the same terms as Perl itself, subject
+# to additional disclaimer in license.terms due to partial
+# derivation from Tk4.0 sources.
+
+use strict;
+
+require Tk::Widget;
+use base  qw(Tk::Widget);
+
+use vars qw($buttonWindow $relief);
+
+Tk::Methods('deselect','flash','invoke','select','toggle');
+
+sub Tk_cmd { \&Tk::button }
+
+Construct Tk::Widget 'Button';
+
+sub ClassInit
+{
+ my ($class,$mw) = @_;
+ $mw->bind($class,'<Enter>', 'Enter');
+ $mw->bind($class,'<Leave>', 'Leave');
+ $mw->bind($class,'<1>', 'butDown');
+ $mw->bind($class,'<ButtonRelease-1>', 'butUp');
+ $mw->bind($class,'<space>', 'Invoke');
+ $mw->bind($class,'<Return>', 'Invoke');
+ return $class;
+}
+
+# tkButtonEnter --
+# 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.
+
+sub Enter
+{
+ my $w = shift;
+ my $E = shift;
+ if ($w->cget('-state') ne 'disabled')
+  {
+   $w->configure('-state' => 'active');
+   $w->configure('-state' => 'active', '-relief' => 'sunken') if (defined($buttonWindow) && $w == $buttonWindow)
+  }
+ $Tk::window = $w;
+}
+
+# tkButtonLeave --
+# 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 (tkPriv(buttonWindow) == $w), restore the relief of the
+# button too.
+#
+# Arguments:
+# w -		The name of the widget.
+sub Leave
+{
+ my $w = shift;
+ $w->configure('-state'=>'normal') if ($w->cget('-state') ne 'disabled');
+ $w->configure('-relief' => $relief) if (defined($buttonWindow) && $w == $buttonWindow);
+ undef $Tk::window;
+}
+
+# tkButtonDown --
+# 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.
+sub butDown
+{
+ my $w = shift;
+ $relief = $w->cget('-relief');
+ if ($w->cget('-state') ne 'disabled')
+  {
+   $buttonWindow = $w;
+   $w->configure('-relief' => 'sunken')
+  }
+}
+
+# tkButtonUp --
+# 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.
+sub butUp
+{
+ my $w = shift;
+ if (defined($buttonWindow) && $buttonWindow == $w)
+  {
+   undef $buttonWindow;
+   $w->configure('-relief' => $relief);
+   if ($w->IS($Tk::window) && $w->cget('-state') ne 'disabled')
+    {
+     $w->invoke;
+    }
+  }
+}
+
+# tkButtonInvoke --
+# 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.
+sub Invoke
+{
+ my $w = shift;
+ if ($w->cget('-state') ne 'disabled')
+  {
+   my $oldRelief = $w->cget('-relief');
+   my $oldState  = $w->cget('-state');
+   $w->configure('-state' => 'active', '-relief' => 'sunken');
+   $w->idletasks;
+   $w->after(100);
+   $w->configure('-state' => $oldState, '-relief' => $oldRelief);
+   $w->invoke;
+  }
+}
+
+
+
+1;
+
+__END__
+
+
+
+
+