[gedit] Do not composite widgets not visible

[Ignacio Casal Quinteiro <icq src gnome org>]

commit f0bd64c20328fca5339b9d40c67b566a039e3704
Author: Ignacio Casal Quinteiro <icq gnome org>
Date:   Mon Apr 11 13:23:42 2011 +0200

    Do not composite widgets not visible

 gedit/gedit-overlay.c |    3 ++-
 1 files changed, 2 insertions(+), 1 deletions(-)
---
diff --git a/gedit/gedit-overlay.c b/gedit/gedit-overlay.c
index 95d7172..7cf50d6 100644
--- a/gedit/gedit-overlay.c
+++ b/gedit/gedit-overlay.c
@@ -533,7 +533,8 @@ gedit_overlay_draw (GtkWidget *widget,
 
 		window = gtk_widget_get_window (child);
 
-		if (window == NULL || window == mywindow)
+		if (window == NULL || window == mywindow ||
+		    !gdk_window_is_visible (window))
 		{
 			continue;
 		}