5 close_app (GtkWidget *widget, gpointer data)
12 expose_cb (GtkWidget *drawing_area, GdkEventExpose *evt, gpointer data)
16 pixbuf = (GdkPixbuf *) g_object_get_data (G_OBJECT (drawing_area), "pixbuf");
17 if (gdk_pixbuf_get_has_alpha (pixbuf))
19 gdk_draw_rgb_32_image (drawing_area->window,
20 drawing_area->style->black_gc,
21 evt->area.x, evt->area.y,
25 gdk_pixbuf_get_pixels (pixbuf) +
26 (evt->area.y * gdk_pixbuf_get_rowstride (pixbuf)) +
27 (evt->area.x * gdk_pixbuf_get_n_channels (pixbuf)),
28 gdk_pixbuf_get_rowstride (pixbuf));
32 gdk_draw_rgb_image (drawing_area->window,
33 drawing_area->style->black_gc,
34 evt->area.x, evt->area.y,
37 GDK_RGB_DITHER_NORMAL,
38 gdk_pixbuf_get_pixels (pixbuf) +
39 (evt->area.y * gdk_pixbuf_get_rowstride (pixbuf)) +
40 (evt->area.x * gdk_pixbuf_get_n_channels (pixbuf)),
41 gdk_pixbuf_get_rowstride (pixbuf));
47 configure_cb (GtkWidget *drawing_area, GdkEventConfigure *evt, gpointer data)
51 pixbuf = (GdkPixbuf *) g_object_get_data (G_OBJECT (drawing_area), "pixbuf");
53 g_print ("X:%d Y:%d\n", evt->width, evt->height);
54 if (evt->width != gdk_pixbuf_get_width (pixbuf) || evt->height != gdk_pixbuf_get_height (pixbuf))
57 GdkPixbuf *new_pixbuf;
59 root = gdk_get_default_root_window ();
60 new_pixbuf = gdk_pixbuf_get_from_drawable (NULL, root, NULL,
61 0, 0, 0, 0, evt->width, evt->height);
62 g_object_set_data (G_OBJECT (drawing_area), "pixbuf", new_pixbuf);
63 g_object_unref (pixbuf);
69 extern void pixbuf_init ();
72 main (int argc, char **argv)
77 GtkWidget *drawing_area;
82 gtk_init (&argc, &argv);
83 gdk_rgb_set_verbose (TRUE);
85 gtk_widget_set_default_colormap (gdk_rgb_get_colormap ());
87 root = gdk_get_default_root_window ();
88 pixbuf = gdk_pixbuf_get_from_drawable (NULL, root, NULL,
89 0, 0, 0, 0, 150, 160);
91 window = gtk_window_new (GTK_WINDOW_TOPLEVEL);
92 g_signal_connect (window, "delete_event",
93 G_CALLBACK (close_app), NULL);
94 g_signal_connect (window, "destroy",
95 G_CALLBACK (close_app), NULL);
97 vbox = gtk_vbox_new (FALSE, 0);
98 gtk_container_add (GTK_CONTAINER (window), vbox);
100 drawing_area = gtk_drawing_area_new ();
101 gtk_widget_set_size_request (GTK_WIDGET (drawing_area),
102 gdk_pixbuf_get_width (pixbuf),
103 gdk_pixbuf_get_height (pixbuf));
104 g_signal_connect (drawing_area, "expose_event",
105 G_CALLBACK (expose_cb), NULL);
107 g_signal_connect (drawing_area, "configure_event",
108 G_CALLBACK (configure_cb), NULL);
109 g_object_set_data (G_OBJECT (drawing_area), "pixbuf", pixbuf);
110 gtk_box_pack_start (GTK_BOX (vbox), drawing_area, TRUE, TRUE, 0);
112 gtk_widget_show_all (window);