[gtk+/client-side-windows: 95/284] Avoid extending implicit paint size due to empty regions not working well with gdk_rectangle_union o



commit 3c5c7f4b4ddf1d7b6d0bf6dc442ba577f1f96019
Author: Alexander Larsson <alexl redhat com>
Date:   Tue Jan 20 21:11:30 2009 +0100

    Avoid extending implicit paint size due to empty regions not working well with gdk_rectangle_union on clipbox
---
 gdk/gdkwindow.c |    7 +++++--
 1 files changed, 5 insertions(+), 2 deletions(-)

diff --git a/gdk/gdkwindow.c b/gdk/gdkwindow.c
index 041db2f..3212d70 100644
--- a/gdk/gdkwindow.c
+++ b/gdk/gdkwindow.c
@@ -1962,8 +1962,11 @@ gdk_window_begin_implicit_paint (GdkWindow *window, GdkRectangle *rect)
     {
       move = l->data;
 
-      gdk_region_get_clipbox (move->region, &clipbox);
-      gdk_rectangle_union (&r, &clipbox, &r);
+      if (!gdk_region_empty (move->region))
+	{
+	  gdk_region_get_clipbox (move->region, &clipbox);
+	  gdk_rectangle_union (&r, &clipbox, &r);
+	}
     }
   
   paint = g_new (GdkWindowPaint, 1);



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