84 lines
2.5 KiB
C++
84 lines
2.5 KiB
C++
/*
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gdkdisplayer.cpp - Implements the class for displaying video via GDK
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Copyright (C) Lumiera.org
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2000, Arne Schirmacher <arne@schirmacher.de>
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2001-2007, Dan Dennedy <dan@dennedy.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
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the 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 "gui/gtk-lumiera.hpp"
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#include <gdk/gdkx.h>
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#include <iostream>
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using std::cerr;
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using std::endl;
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#include "gdkdisplayer.hpp"
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namespace gui {
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namespace output {
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GdkDisplayer::GdkDisplayer( Gtk::Widget *drawing_area, int width, int height ) :
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drawingArea( drawing_area )
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{
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REQUIRE(drawing_area != NULL);
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REQUIRE(width > 0);
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REQUIRE(height > 0);
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imageWidth = width, imageHeight = height;
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}
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bool
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GdkDisplayer::usable()
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{
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return true;
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}
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void
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GdkDisplayer::put( const void* image )
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{
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int video_x = 0, video_y = 0, video_width = 0, video_height = 0;
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calculateVideoLayout(
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drawingArea->get_width(),
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drawingArea->get_height(),
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preferredWidth(), preferredHeight(),
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video_x, video_y, video_width, video_height );
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GdkWindow *window = drawingArea->get_window()->gobj();
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REQUIRE(window != NULL);
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GdkGC *gc = gdk_gc_new( window );
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REQUIRE(gc != NULL);
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GdkPixbuf *pixbuf = gdk_pixbuf_new_from_data( (const guchar*)image, GDK_COLORSPACE_RGB, FALSE, 8,
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preferredWidth(), preferredHeight(), preferredWidth() * 3, NULL, NULL );
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REQUIRE(pixbuf != NULL);
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GdkPixbuf *scaled_image = gdk_pixbuf_scale_simple( pixbuf, video_width, video_height, GDK_INTERP_NEAREST );
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REQUIRE(scaled_image != NULL);
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gdk_draw_pixbuf( window, gc, scaled_image, 0, 0, video_x, video_y, -1, -1, GDK_RGB_DITHER_NORMAL, 0, 0 );
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g_object_unref( scaled_image );
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g_object_unref( pixbuf );
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g_object_unref( gc );
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}
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} // namespace output
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} // namespace gui
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