[gtk+] Only apply clip_region shape for viewable windows

[Alexander Larsson <alexl src gnome org>]

commit ed2c83757417a1ca19bb54f11b74c8fd93ef81c0
Author: Alexander Larsson <alexl redhat com>
Date:   Sat Jul 18 21:51:11 2009 +0200

    Only apply clip_region shape for viewable windows
    
    This fixes a problem where the clip region is not yet calculated

 gdk/gdkwindow.c |    3 ++-
 1 files changed, 2 insertions(+), 1 deletions(-)
---
diff --git a/gdk/gdkwindow.c b/gdk/gdkwindow.c
index e62311e..7ee32c0 100644
--- a/gdk/gdkwindow.c
+++ b/gdk/gdkwindow.c
@@ -1579,7 +1579,8 @@ gdk_window_ensure_native (GdkWindow *window)
 
   /* The shape may not have been set, as the clip region doesn't actually
      change, so do it here manually */
-  GDK_WINDOW_IMPL_GET_IFACE (private->impl)->shape_combine_region ((GdkWindow *)private, private->clip_region, 0, 0);
+  if (private->viewable)
+    GDK_WINDOW_IMPL_GET_IFACE (private->impl)->shape_combine_region ((GdkWindow *)private, private->clip_region, 0, 0);
 
   reparent_to_impl (private);