gdkdisplayer.cpp

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/*
  GgdkDisplayer  -  displaying video via GDK

  Copyright (C)         Lumiera.org
    2000,               Arne Schirmacher <arne@schirmacher.de>
    2001-2007,          Dan Dennedy <dan@dennedy.org>
    2008,               Joel Holdsworth <joel@airwebreathe.org.uk>

  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 "stage/gtk-base.hpp"
#include "stage/output/gdkdisplayer.hpp"

#if false  
#include <gdk/gdkx.h>
#endif     
#include <iostream>

using std::cerr;
using std::endl;


namespace stage {
namespace output {
  
  GdkDisplayer::GdkDisplayer (Gtk::Widget *drawing_area,
                              int width, int height)
    : drawingArea( drawing_area )
    {
      REQUIRE (drawing_area != NULL);
      REQUIRE (width > 0);
      REQUIRE (height > 0);
      
      imageWidth = width,
      imageHeight = height;
    }
  
  bool
  GdkDisplayer::usable()
  {
    return false;  
  }
  
  void
  GdkDisplayer::put (void* const image)
  {  
    int video_x = 0,
        video_y = 0,
        video_width = 0,
        video_height = 0;
    
    calculateVideoLayout(
      drawingArea->get_width(),
      drawingArea->get_height(),
      preferredWidth(), preferredHeight(),
      video_x, video_y, video_width, video_height);
  
    GdkWindow *window = drawingArea->get_window()->gobj();
    REQUIRE (window != NULL);
      
  #if false  
    GdkGC *gc = gdk_gc_new( window );
    REQUIRE(gc != NULL);
    
    GdkPixbuf *pixbuf = gdk_pixbuf_new_from_data( (const guchar*)image, GDK_COLORSPACE_RGB, FALSE, 8,
      preferredWidth(), preferredHeight(), preferredWidth() * 3, NULL, NULL );
    REQUIRE(pixbuf != NULL);
      
    GdkPixbuf *scaled_image = gdk_pixbuf_scale_simple( pixbuf, video_width, video_height, GDK_INTERP_NEAREST );
    REQUIRE(scaled_image != NULL);
    
    gdk_draw_pixbuf( window, gc, scaled_image, 0, 0, video_x, video_y, -1, -1, GDK_RGB_DITHER_NORMAL, 0, 0 );
    
    g_object_unref( scaled_image );
    g_object_unref( pixbuf );
    g_object_unref( gc );
  #endif     
  }
  
  
}}   // namespace stage::output