1 files changed, 116 insertions, 0 deletions
diff --git a/doc/tutorial/src/include/cairo-tutorial-gtk.h b/doc/tutorial/src/include/cairo-tutorial-gtk.h
new file mode 100644
index 000000000..7be74e21d
--- /dev/null
+++ b/doc/tutorial/src/include/cairo-tutorial-gtk.h
@@ -0,0 +1,116 @@
+/* cairo-tutorial-gtk.h - a tutorial framework for cairo with gtk+
+ *
+ * Copyright © 2005, Carl Worth
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License version 2 as
+ * published by the Free Software Foundation.
+ *
+ * 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., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
+ */
+
+#include <gtk/gtk.h>
+#include <cairo.h>
+
+#ifndef WIDTH
+#define WIDTH 400
+#endif
+
+#ifndef HEIGHT
+#define HEIGHT 400
+#endif
+
+static void
+draw (cairo_t *cr, int width, int height);
+
+#if ! GTK_CHECK_VERSION(2,7,0)
+/* copied from gtk+/gdk/gdkcairo.c and gtk+/gdk/x11/gdkdrawable-x11.c
+ * gdk_cairo_create() which is available in 2.7.0 and later.
+ */
+static cairo_t *
+gdk_cairo_create (GdkDrawable *drawable)
+{
+    int width, height;
+    cairo_t *cr = NULL;
+    cairo_surface_t *surface = NULL;
+    GdkVisual *visual = gdk_drawable_get_visual (drawable);
+
+    gdk_drawable_get_size (drawable, &width, &height);
+    if (visual) 
+	surface = cairo_xlib_surface_create (GDK_DRAWABLE_XDISPLAY (drawable),
+					     GDK_DRAWABLE_XID (drawable),
+					     GDK_VISUAL_XVISUAL (visual),
+					     width, height);
+    else if (gdk_drawable_get_depth (drawable) == 1)
+	surface = cairo_xlib_surface_create_for_bitmap 
+	    (GDK_PIXMAP_XDISPLAY (drawable),
+	     GDK_PIXMAP_XID (drawable),
+	     GDK_SCREEN_XSCREEN (gdk_drawable_get_screen (drawable)),
+	     width, height);
+    else {
+	g_warning ("Using Cairo rendering requires the drawable argument to\n"
+		   "have a specified colormap. All windows have a colormap,\n"
+		   "however, pixmaps only have colormap by default if they\n"
+		   "were created with a non-NULL window argument. Otherwise\n"
+		   "a colormap must be set on them with "
+		   "gdk_drawable_set_colormap");
+	return NULL;
+    }
+    if (surface) {
+	cr = cairo_create (surface);
+	cairo_surface_destroy (surface);
+    }
+    return cr;
+}
+#endif
+
+static gboolean
+handle_expose (GtkWidget      *widget,
+	       GdkEventExpose *event,
+	       gpointer	       data)
+{
+    cairo_t *cr;
+
+    cr = gdk_cairo_create (widget->window);
+
+    draw (cr, widget->allocation.width, widget->allocation.height);
+
+    cairo_destroy (cr);
+
+    return FALSE;
+}
+
+int 
+main (int argc, char **argv)
+{
+    GtkWidget *window, *drawing_area;
+
+    gtk_init (&argc, &argv);
+
+    window = gtk_window_new (GTK_WINDOW_TOPLEVEL);
+
+    gtk_window_set_default_size (GTK_WINDOW (window), WIDTH, HEIGHT);
+    gtk_window_set_title (GTK_WINDOW (window), "cairo demo");
+
+    g_signal_connect (window, "destroy",
+		      G_CALLBACK (gtk_main_quit), NULL);
+
+    drawing_area = gtk_drawing_area_new ();
+    gtk_container_add (GTK_CONTAINER (window), drawing_area);
+
+    g_signal_connect (drawing_area, "expose-event",
+		      G_CALLBACK (handle_expose), NULL);
+
+    gtk_widget_show_all (window);
+
+    gtk_main ();
+    
+    return 0;
+}