[gtk+] gdk: Do DEBUG_UPDATES drawing with Cairo

[Benjamin Otte <otte src gnome org>]

commit cfa3a71c7b6ae3ee250db45e35bd1915bcee512c
Author: Benjamin Otte <otte redhat com>
Date:   Sat Jul 17 04:28:40 2010 +0200

    gdk: Do DEBUG_UPDATES drawing with Cairo

 gdk/gdkwindow.c |   23 +++++++----------------
 1 files changed, 7 insertions(+), 16 deletions(-)
---
diff --git a/gdk/gdkwindow.c b/gdk/gdkwindow.c
index c899cbc..3235c6b 100644
--- a/gdk/gdkwindow.c
+++ b/gdk/gdkwindow.c
@@ -5783,24 +5783,15 @@ static void
 draw_ugly_color (GdkWindow       *window,
 		 const cairo_region_t *region)
 {
-  /* Draw ugly color all over the newly-invalid region */
-  GdkColor ugly_color = { 0, 50000, 10000, 10000 };
-  GdkGC *ugly_gc;
-  GdkRectangle clipbox;
-
-  ugly_gc = gdk_gc_new (window);
-  gdk_gc_set_rgb_fg_color (ugly_gc, &ugly_color);
-  gdk_gc_set_clip_region (ugly_gc, region);
-
-  cairo_region_get_extents (region, &clipbox);
+  cairo_t *cr;
 
-  gdk_draw_rectangle (window,
-		      ugly_gc,
-		      TRUE,
-		      clipbox.x, clipbox.y,
-		      clipbox.width, clipbox.height);
+  cr = gdk_cairo_create (window);
+  /* Draw ugly color all over the newly-invalid region */
+  cairo_set_source_rgb (cr, 50000/65535., 10000/65535., 10000/65535.);
+  gdk_cairo_region (cr, region);
+  cairo_fill (cr);
 
-  g_object_unref (ugly_gc);
+  cairo_destroy (cr);
 }
 
 static void