[gtk+] check button: Reinstate rtl allocation behavior

[Matthias Clasen <matthiasc src gnome org>]

commit c48f0d6f8be64955566be5760bcf227211448217
Author: Matthias Clasen <mclasen redhat com>
Date:   Thu Mar 3 21:26:39 2016 -0500

    check button: Reinstate rtl allocation behavior
    
    In rtl mode, we must not just reverse the children,
    but also allocate from the right. Use the newly introduced
    box gadget api to achieve this.
    
    https://bugzilla.gnome.org/show_bug.cgi?id=762945

 gtk/gtkcheckbutton.c |    2 ++
 1 files changed, 2 insertions(+), 0 deletions(-)
---
diff --git a/gtk/gtkcheckbutton.c b/gtk/gtkcheckbutton.c
index dc899c9..06890d0 100644
--- a/gtk/gtkcheckbutton.c
+++ b/gtk/gtkcheckbutton.c
@@ -154,6 +154,8 @@ gtk_check_button_direction_changed (GtkWidget        *widget,
   GtkCheckButtonPrivate *priv = gtk_check_button_get_instance_private (GTK_CHECK_BUTTON (widget));
 
   gtk_box_gadget_reverse_children (GTK_BOX_GADGET (priv->gadget));
+  gtk_box_gadget_set_allocate_reverse (GTK_BOX_GADGET (priv->gadget),
+                                       gtk_widget_get_direction (widget) == GTK_TEXT_DIR_RTL);
 
   GTK_WIDGET_CLASS (gtk_check_button_parent_class)->direction_changed (widget, previous_direction);
 }