[gtk+] box: Only emit pack-type notify if the pack type really changed

[Benjamin Otte <otte src gnome org>]

commit bc9c43c1cbb1fdb7faf292ee0e57c5efd06e890e
Author: Benjamin Otte <otte redhat com>
Date:   Fri May 27 18:52:02 2011 +0200

    box: Only emit pack-type notify if the pack type really changed
    
    This is not very useful in itself, but the code reorg will be useful
    once we do style invalidation.

 gtk/gtkbox.c |   12 +++++++-----
 1 files changed, 7 insertions(+), 5 deletions(-)
---
diff --git a/gtk/gtkbox.c b/gtk/gtkbox.c
index 9a20579..b1d1df9 100644
--- a/gtk/gtkbox.c
+++ b/gtk/gtkbox.c
@@ -1612,11 +1612,13 @@ gtk_box_set_child_packing (GtkBox      *box,
       gtk_widget_child_notify (child, "fill");
       child_info->padding = padding;
       gtk_widget_child_notify (child, "padding");
-      if (pack_type == GTK_PACK_END)
-	child_info->pack = GTK_PACK_END;
-      else
-	child_info->pack = GTK_PACK_START;
-      gtk_widget_child_notify (child, "pack-type");
+      if (pack_type != GTK_PACK_END)
+        pack_type = GTK_PACK_START;
+      if (child_info->pack_type != pack_type)
+        {
+	  child_info->pack = GTK_PACK_END;
+          gtk_widget_child_notify (child, "pack-type");
+        }
 
       if (gtk_widget_get_visible (child)
           && gtk_widget_get_visible (GTK_WIDGET (box)))