[gtk+] Bug 637910 - GtkSpinner - does not animate

[Carlos Garnacho <carlosg src gnome org>]

commit 2bd221d2152299ca0aa0cd78702c58d2fd3d30d4
Author: Carlos Garnacho <carlosg gnome org>
Date:   Fri Dec 24 18:05:07 2010 +0100

    Bug 637910 - GtkSpinner - does not animate
    
    Fix widget-to-window coordinates translation in the
    style context animation code.

 gtk/gtkstylecontext.c |    8 ++++++--
 1 files changed, 6 insertions(+), 2 deletions(-)
---
diff --git a/gtk/gtkstylecontext.c b/gtk/gtkstylecontext.c
index e42ebf8..162c971 100644
--- a/gtk/gtkstylecontext.c
+++ b/gtk/gtkstylecontext.c
@@ -3043,8 +3043,12 @@ _gtk_style_context_coalesce_animation_areas (GtkStyleContext *context,
           cairo_rectangle_int_t *rect;
 
           rect = &g_array_index (info->rectangles, cairo_rectangle_int_t, i);
-          rect->x += rel_x;
-          rect->y += rel_y;
+
+	  /* These are widget relative coordinates,
+	   * so have them inverted to be window relative
+	   */
+          rect->x -= rel_x;
+          rect->y -= rel_y;
 
           cairo_region_union_rectangle (info->invalidation_region, rect);
         }