[gtk+] Make gdk_window_begin/end_paint handle non-viewable windows

[Alexander Larsson <alexl src gnome org>]

commit 82e609c2a025224921908e3a0e7472256e7e1269
Author: Alexander Larsson <alexl redhat com>
Date:   Mon Jul 20 22:36:02 2009 +0200

    Make gdk_window_begin/end_paint handle non-viewable windows
    
    These are updated to not read clip region is not viewable

 gdk/gdkwindow.c |    9 +++++++--
 1 files changed, 7 insertions(+), 2 deletions(-)
---
diff --git a/gdk/gdkwindow.c b/gdk/gdkwindow.c
index 9ceb5d1..8bcec54 100644
--- a/gdk/gdkwindow.c
+++ b/gdk/gdkwindow.c
@@ -2475,10 +2475,10 @@ gdk_window_begin_paint_region (GdkWindow       *window,
   implicit_paint = impl_window->implicit_paint;
 
   paint = g_new (GdkWindowPaint, 1);
-  paint->region = gdk_region_copy (region);
+  paint->region = gdk_window_get_visible_region ((GdkDrawable *)window);
+  gdk_region_intersect (paint->region, region);
   paint->region_tag = new_region_tag ();
 
-  gdk_region_intersect (paint->region, private->clip_region_with_children);
   gdk_region_get_clipbox (paint->region, &clip_box);
 
   /* Convert to impl coords */
@@ -2641,6 +2641,9 @@ gdk_window_end_paint (GdkWindow *window)
   private->paint_stack = g_slist_delete_link (private->paint_stack,
 					      private->paint_stack);
 
+  if (!private->viewable)
+    goto non_viewable;
+
   gdk_region_get_clipbox (paint->region, &clip_box);
 
   tmp_gc = _gdk_drawable_get_scratch_gc (window, FALSE);
@@ -2680,6 +2683,8 @@ gdk_window_end_paint (GdkWindow *window)
   /* Reset clip region of the cached GdkGC */
   gdk_gc_set_clip_region (tmp_gc, NULL);
 
+ non_viewable:
+
   cairo_surface_destroy (paint->surface);
   g_object_unref (paint->pixmap);
   gdk_region_destroy (paint->region);