rollback to 3428, before the mysterious removal of libs/* at 3431/3432

git-svn-id: svn://localhost/ardour2/branches/3.0@3435 d708f5d6-7413-0410-9779-e7cbd77b26cf

1 files changed, 102 insertions, 0 deletions

diff --git a/libs/gtkmm2ext/stateful_button.cc b/libs/gtkmm2ext/stateful_button.cc
new file mode 100644
index 0000000000..949cae958b
--- /dev/null
+++ b/libs/gtkmm2ext/stateful_button.cc
@@ -0,0 +1,102 @@
+/*
+    Copyright (C) 2000-2007 Paul Davis 
+
+    This program is free software; you can redistribute it and/or modify
+    it under the terms of the GNU General Public License as published by
+    the Free Software Foundation; either version 2 of the License, or
+    (at your option) any later version.
+
+    This program is distributed in the hope that it will be useful,
+    but WITHOUT ANY WARRANTY; without even the implied warranty of
+    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+    GNU General Public License for more details.
+
+    You should have received a copy of the GNU General Public License
+    along with this program; if not, write to the Free Software
+    Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
+
+*/
+
+#include <string>
+#include <iostream>
+
+#include <gtkmm/main.h>
+
+#include <gtkmm2ext/stateful_button.h>
+
+using namespace Gtk;
+using namespace Glib;
+using namespace Gtkmm2ext;
+using namespace std;
+
+StateButton::StateButton ()
+{
+	_is_realized = false;
+	visual_state = 0;
+}
+
+void
+StateButton::set_visual_state (int n)
+{
+	if (!_is_realized) {
+		/* not yet realized */
+		visual_state = n;
+		return;
+	}
+
+	if (n == visual_state) {
+		return;
+	}
+
+	string name = get_widget_name ();
+	name = name.substr (0, name.find_last_of ('-'));
+
+	switch (n) {
+	case 0:
+		/* relax */
+		break;
+	case 1:
+		name += "-active";
+		break;
+	case 2:
+		name += "-alternate";
+		break;
+	}
+
+	set_widget_name (name);
+	visual_state = n;
+}
+
+/* ----------------------------------------------------------------- */
+
+void
+StatefulToggleButton::on_realize ()
+{
+	ToggleButton::on_realize ();
+
+	_is_realized = true;
+	visual_state++; // to force transition
+	set_visual_state (visual_state - 1);
+}
+
+void
+StatefulButton::on_realize ()
+{
+	Button::on_realize ();
+
+	_is_realized = true;
+	visual_state++; // to force transition
+	set_visual_state (visual_state - 1);
+}
+
+void
+StatefulToggleButton::on_toggled ()
+{
+	if (!_self_managed) {
+		if (get_active()) {
+			set_visual_state (1);
+		} else {
+			set_visual_state (0);
+		}
+	}
+}