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/*
Copyright (C) 2009 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 "cairo_widget.h"
#include "gui_thread.h"
CairoWidget::CairoWidget ()
: _width (1)
, _height (1)
, _active_state (CairoWidget::ActiveState (0))
, _visual_state (CairoWidget::VisualState (0))
{
}
CairoWidget::~CairoWidget ()
{
}
bool
CairoWidget::on_expose_event (GdkEventExpose *ev)
{
cairo_t* cr = gdk_cairo_create (get_window ()->gobj());
cairo_rectangle (cr, ev->area.x, ev->area.y, ev->area.width, ev->area.height);
cairo_clip (cr);
render (cr);
cairo_destroy (cr);
return true;
}
/** Marks the widget as dirty, so that render () will be called on
* the next GTK expose event.
*/
void
CairoWidget::set_dirty ()
{
ENSURE_GUI_THREAD (*this, &CairoWidget::set_dirty)
queue_draw ();
}
/** Handle a size allocation.
* @param alloc GTK allocation.
*/
void
CairoWidget::on_size_allocate (Gtk::Allocation& alloc)
{
Gtk::EventBox::on_size_allocate (alloc);
_width = alloc.get_width ();
_height = alloc.get_height ();
set_dirty ();
}
Gdk::Color
CairoWidget::get_parent_bg ()
{
Widget* parent;
parent = get_parent ();
while (parent && !parent->get_has_window()) {
parent = parent->get_parent();
}
if (parent && parent->get_has_window()) {
return parent->get_style ()->get_bg (parent->get_state());
}
return get_style ()->get_bg (get_state());
}
void
CairoWidget::set_active_state (CairoWidget::ActiveState s)
{
if (_active_state != s) {
_active_state = s;
StateChanged ();
}
}
void
CairoWidget::set_visual_state (CairoWidget::VisualState s)
{
if (_visual_state != s) {
_visual_state = s;
StateChanged ();
}
}
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