73 lines
2 KiB
C++
73 lines
2 KiB
C++
/*
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video-display-widget.cpp - Implementation of the video viewer widget
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Copyright (C) Lumiera.org
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2008, Joel Holdsworth <joel@airwebreathe.org.uk>
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This program is free software; you can redistribute it and/or
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modify it under the terms of the GNU General Public License as
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published by the Free Software Foundation; either version 2 of the
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License, or (at your option) any later version.
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This program is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU General Public License for more details.
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You should have received a copy of the GNU General Public License
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along with this program; if not, write to the Free Software
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Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
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* *****************************************************/
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#include <gdkmm/drawable.h>
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#include <gdkmm/general.h>
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#include <cairomm-1.0/cairomm/cairomm.h>
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#include "video-display-widget.hpp"
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namespace lumiera {
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namespace gui {
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namespace widgets {
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VideoDisplayWidget::VideoDisplayWidget()
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{
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set_flags(Gtk::NO_WINDOW);
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}
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void
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VideoDisplayWidget::on_realize()
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{
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//Call base class:
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Gtk::Widget::on_realize();
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}
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bool
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VideoDisplayWidget::on_expose_event(GdkEventExpose* event)
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{
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// This is where we draw on the window
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Glib::RefPtr<Gdk::Window> window = get_window();
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if(window)
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{
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Cairo::RefPtr<Cairo::Context> cr = window->create_cairo_context();
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if(event)
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{
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// clip to the area that needs to be re-exposed so we don't draw any
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// more than we need to.
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cr->rectangle(event->area.x, event->area.y,
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event->area.width, event->area.height);
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cr->clip();
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}
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// Paint the background
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cr->set_source_rgb(0.0, 0.0, 0.0);
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cr->paint();
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}
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return true;
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}
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} // namespace widgets
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} // namespace gui
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} // namespace lumiera
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