#include "config.h"

#undef GDK_DISABLE_DEPRECATED

#include <gtk/gtk.h>

int

close_app (GtkWidget *widget, gpointer data)

{

   gtk_main_quit ();

   return TRUE;

}

int

expose_cb (GtkWidget *drawing_area, GdkEventExpose *evt, gpointer data)

{

   GdkPixbuf *pixbuf;

   pixbuf = (GdkPixbuf *) g_object_get_data (G_OBJECT (drawing_area), "pixbuf");

   if (gdk_pixbuf_get_has_alpha (pixbuf))

   {

      gdk_draw_rgb_32_image (drawing_area->window,

			     drawing_area->style->black_gc,

			     evt->area.x, evt->area.y,

			     evt->area.width,

			     evt->area.height,

			     GDK_RGB_DITHER_MAX,

			     gdk_pixbuf_get_pixels (pixbuf) +

			     (evt->area.y * gdk_pixbuf_get_rowstride (pixbuf)) +

			     (evt->area.x * gdk_pixbuf_get_n_channels (pixbuf)),

			     gdk_pixbuf_get_rowstride (pixbuf));

   }

   else

   {

      gdk_draw_rgb_image (drawing_area->window, 

			  drawing_area->style->black_gc, 

			  evt->area.x, evt->area.y,

			  evt->area.width,

			  evt->area.height,  

			  GDK_RGB_DITHER_NORMAL,

			  gdk_pixbuf_get_pixels (pixbuf) +

			  (evt->area.y * gdk_pixbuf_get_rowstride (pixbuf)) +

			  (evt->area.x * gdk_pixbuf_get_n_channels (pixbuf)),

			  gdk_pixbuf_get_rowstride (pixbuf));

   }

   return FALSE;

}

int

configure_cb (GtkWidget *drawing_area, GdkEventConfigure *evt, gpointer data)

{

   GdkPixbuf *pixbuf;

   pixbuf = (GdkPixbuf *) g_object_get_data (G_OBJECT (drawing_area), "pixbuf");

   g_print ("X:%d Y:%d\n", evt->width, evt->height);

   if (evt->width != gdk_pixbuf_get_width (pixbuf) || evt->height != gdk_pixbuf_get_height (pixbuf))

   {

      GdkWindow *root;

      GdkPixbuf *new_pixbuf;

      root = gdk_get_default_root_window ();

      new_pixbuf = gdk_pixbuf_get_from_drawable (NULL, root, NULL,

						 0, 0, 0, 0, evt->width, evt->height);

      g_object_set_data (G_OBJECT (drawing_area), "pixbuf", new_pixbuf);

      g_object_unref (pixbuf);

   }

   return FALSE;

}

extern void pixbuf_init (void);

int

main (int argc, char **argv)

{   

   GdkWindow     *root;

   GtkWidget     *window;

   GtkWidget     *vbox;

   GtkWidget     *drawing_area;

   GdkPixbuf     *pixbuf;    

   pixbuf_init ();

   gtk_init (&argc, &argv);   

   gdk_rgb_set_verbose (TRUE);

   gtk_widget_set_default_colormap (gdk_rgb_get_colormap ());

   root = gdk_get_default_root_window ();

   pixbuf = gdk_pixbuf_get_from_drawable (NULL, root, NULL,

					  0, 0, 0, 0, 150, 160);

   window = gtk_window_new (GTK_WINDOW_TOPLEVEL);

   g_signal_connect (window, "delete_event",

		     G_CALLBACK (close_app), NULL);

   g_signal_connect (window, "destroy",   

		     G_CALLBACK (close_app), NULL);

   vbox = gtk_vbox_new (FALSE, 0);

   gtk_container_add (GTK_CONTAINER (window), vbox);  

   drawing_area = gtk_drawing_area_new ();

   gtk_widget_set_size_request (GTK_WIDGET (drawing_area),

                                gdk_pixbuf_get_width (pixbuf),

                                gdk_pixbuf_get_height (pixbuf));

   g_signal_connect (drawing_area, "expose_event",

		     G_CALLBACK (expose_cb), NULL);

   g_signal_connect (drawing_area, "configure_event",

		     G_CALLBACK (configure_cb), NULL);

   g_object_set_data (G_OBJECT (drawing_area), "pixbuf", pixbuf);

   gtk_box_pack_start (GTK_BOX (vbox), drawing_area, TRUE, TRUE, 0);

   gtk_widget_show_all (window);

   gtk_main ();

   return 0;

}