[gtk+] window: Avoid excessive resizing with popovers

[Matthias Clasen <matthiasc src gnome org>]

commit ed5468e81ce3fe2d75703cfd51481986902f5165
Author: Matthias Clasen <mclasen redhat com>
Date:   Wed Mar 9 08:58:23 2016 -0500

    window: Avoid excessive resizing with popovers
    
    Under Wayland, popovers use subsurfaces, and we end up getting
    configure events for these delivered to the toplevel they're in.
    To avoid triggering resize loops, ignore configure events that
    are not for the toplevel window itself.
    
    https://bugzilla.gnome.org/show_bug.cgi?id=763351

 gtk/gtkwindow.c |    3 +++
 1 files changed, 3 insertions(+), 0 deletions(-)
---
diff --git a/gtk/gtkwindow.c b/gtk/gtkwindow.c
index f5cf1ba..a2be09d 100644
--- a/gtk/gtkwindow.c
+++ b/gtk/gtkwindow.c
@@ -7655,6 +7655,9 @@ gtk_window_configure_event (GtkWidget         *widget,
   if (!_gtk_widget_is_toplevel (widget))
     return FALSE;
 
+  if (_gtk_widget_get_window (widget) != event->window)
+    return TRUE;
+
   /* If this is a gratuitous ConfigureNotify that's already
    * the same as our allocation, then we can fizzle it out.
    * This is the case for dragging windows around.