2 Copyright (C) 2009 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 #include "cairo_widget.h"
21 #include "gui_thread.h"
23 CairoWidget::CairoWidget ()
26 , _active_state (Gtkmm2ext::ActiveState (0))
27 , _visual_state (Gtkmm2ext::VisualState (0))
32 CairoWidget::~CairoWidget ()
37 CairoWidget::on_expose_event (GdkEventExpose *ev)
39 cairo_t* cr = gdk_cairo_create (get_window ()->gobj());
40 cairo_rectangle (cr, ev->area.x, ev->area.y, ev->area.width, ev->area.height);
48 /** Marks the widget as dirty, so that render () will be called on
49 * the next GTK expose event.
53 CairoWidget::set_dirty ()
55 ENSURE_GUI_THREAD (*this, &CairoWidget::set_dirty)
59 /** Handle a size allocation.
60 * @param alloc GTK allocation.
63 CairoWidget::on_size_allocate (Gtk::Allocation& alloc)
65 Gtk::EventBox::on_size_allocate (alloc);
67 _width = alloc.get_width ();
68 _height = alloc.get_height ();
74 CairoWidget::get_parent_bg ()
78 parent = get_parent ();
80 while (parent && !parent->get_has_window()) {
81 parent = parent->get_parent();
84 if (parent && parent->get_has_window()) {
85 return parent->get_style ()->get_bg (parent->get_state());
88 return get_style ()->get_bg (get_state());
92 CairoWidget::set_active_state (Gtkmm2ext::ActiveState s)
94 if (_active_state != s) {
101 CairoWidget::set_visual_state (Gtkmm2ext::VisualState s)
103 if (_visual_state != s) {
110 CairoWidget::on_state_changed (Gtk::StateType)
112 /* this will catch GTK-level state changes from calls like
116 if (get_state() == Gtk::STATE_INSENSITIVE) {
117 set_visual_state (Gtkmm2ext::VisualState (visual_state() | Gtkmm2ext::Insensitive));
119 set_visual_state (Gtkmm2ext::VisualState (visual_state() & ~Gtkmm2ext::Insensitive));