2 Copyright (C) 2013 Paul Davis
4 This program is free software; you can redistribute it and/or modify
5 it under the terms of the GNU General Public License as published by
6 the Free Software Foundation; either version 2 of the License, or
7 (at your option) any later version.
9 This program is distributed in the hope that it will be useful,
10 but WITHOUT ANY WARRANTY; without even the implied warranty of
11 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
12 GNU General Public License for more details.
14 You should have received a copy of the GNU General Public License
15 along with this program; if not, write to the Free Software
16 Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
20 #ifndef __libgtkmm2ext_visibility_tracker__
21 #define __libgtkmm2ext_visibility_tracker__
23 #include <gdk/gdkevents.h>
25 #include "gtkmm2ext/visibility.h"
33 class LIBGTKMM2EXT_API VisibilityTracker : public virtual sigc::trackable {
35 VisibilityTracker (Gtk::Window&);
36 virtual ~VisibilityTracker() {}
38 void cycle_visibility ();
40 bool fully_visible() const;
41 bool not_visible() const;
42 bool partially_visible() const;
44 Gtk::Window& window () const { return _window; }
48 GdkVisibilityState _visibility;
49 bool handle_visibility_notify_event (GdkEventVisibility*);
54 #endif /* __libgtkmm2ext_visibility_tracker__ */