Date:   Thu Jan 5 18:40:01 2012 -0500

Bug 715704. Add a quartz implementation of mark_dirty_rectangle. r=roc

We need to drop our CGImage cache when the surface has been changed by outside users.

diff --git a/gfx/cairo/cairo/src/cairo-quartz-surface.c b/gfx/cairo/cairo/src/cairo-quartz-surface.c
--- a/gfx/cairo/cairo/src/cairo-quartz-surface.c
+++ b/gfx/cairo/cairo/src/cairo-quartz-surface.c
@@ -3116,16 +3116,27 @@ _cairo_quartz_surface_clipper_intersect_
 	    CGContextEOClip (surface->cgContext);
     }
 
     ND((stderr, "-- intersect_clip_path\n"));
 
     return CAIRO_STATUS_SUCCESS;
 }
 
+static cairo_status_t
+_cairo_quartz_surface_mark_dirty_rectangle (void *abstract_surface,
+					    int x, int y,
+					    int width, int height)
+{
+    cairo_quartz_surface_t *surface = (cairo_quartz_surface_t *) abstract_surface;
+    _cairo_quartz_surface_will_change (surface);
+    return CAIRO_STATUS_SUCCESS;
+}
+
+
 // XXXtodo implement show_page; need to figure out how to handle begin/end
 
 static const struct _cairo_surface_backend cairo_quartz_surface_backend = {
     CAIRO_SURFACE_TYPE_QUARTZ,
     _cairo_quartz_surface_create_similar,
     _cairo_quartz_surface_finish,
     _cairo_quartz_surface_acquire_image,
     _cairo_quartz_surface_release_source_image,
@@ -3138,17 +3149,17 @@ static const struct _cairo_surface_backe
     NULL, /* create_span_renderer */
     NULL, /* check_span_renderer */
     NULL, /* copy_page */
     NULL, /* show_page */
     _cairo_quartz_surface_get_extents,
     NULL, /* old_show_glyphs */
     NULL, /* get_font_options */
     NULL, /* flush */
-    NULL, /* mark_dirty_rectangle */
+    _cairo_quartz_surface_mark_dirty_rectangle,
     NULL, /* scaled_font_fini */
     NULL, /* scaled_glyph_fini */
 
     _cairo_quartz_surface_paint,
     _cairo_quartz_surface_mask,
     _cairo_quartz_surface_stroke,
     _cairo_quartz_surface_fill,
     _cairo_quartz_surface_show_glyphs,