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From 6a214c9bcd78be3814a125d52e4d1eb3ac7d2256 Mon Sep 17 00:00:00 2001
From: Matthias Clasen <mclasen@redhat.com>
Date: Thu, 2 Oct 2014 18:02:11 -0400
Subject: [PATCH] GtkExpander: Fix a problem with resize-toplevel

The toplevel resizing was not working properly when the
content had non-trivial height-for-width behavior (such
as a wrapping label).
---
 gtk/gtkexpander.c | 8 +++-----
 1 file changed, 3 insertions(+), 5 deletions(-)

diff --git a/gtk/gtkexpander.c b/gtk/gtkexpander.c
index e8bf4b8..030f5a8 100644
--- a/gtk/gtkexpander.c
+++ b/gtk/gtkexpander.c
@@ -1244,23 +1244,21 @@ gtk_expander_resize_toplevel (GtkExpander *expander)
       if (toplevel && gtk_widget_get_realized (toplevel))
         {
           GtkAllocation toplevel_allocation;
+          GtkAllocation child_allocation;
 
           gtk_widget_get_allocation (toplevel, &toplevel_allocation);
+          gtk_widget_get_allocation (child, &child_allocation);
 
           if (priv->expanded)
             {
               GtkRequisition child_requisition;
 
-              gtk_widget_get_preferred_size (child, &child_requisition, NULL);
+              gtk_widget_get_preferred_height_for_width (child, child_allocation.width, &child_requisition.height, NULL);
 
               toplevel_allocation.height += child_requisition.height;
             }
           else
             {
-              GtkAllocation child_allocation;
-
-              gtk_widget_get_allocation (child, &child_allocation);
-
               toplevel_allocation.height -= child_allocation.height;
             }
 
-- 
1.9.3