[glade] GladeDesignLayout: added GTK_STYLE_CLASS_BACKGROUND class to default_context, so widgets other than

[Juan Pablo Ugarte <jpu src gnome org>]

commit ce301a0be976abe4948add67a6d11f5612416d05
Author: Juan Pablo Ugarte <juanpablougarte gmail com>
Date:   Fri Apr 19 19:59:29 2013 -0300

    GladeDesignLayout: added GTK_STYLE_CLASS_BACKGROUND class to default_context, so widgets other than 
GtkWindow get a proper background.

 gladeui/glade-design-layout.c | 1 +
 1 file changed, 1 insertion(+)
---
diff --git a/gladeui/glade-design-layout.c b/gladeui/glade-design-layout.c
index f8b5222..565af5a 100644
--- a/gladeui/glade-design-layout.c
+++ b/gladeui/glade-design-layout.c
@@ -1747,6 +1747,7 @@ glade_design_layout_init (GladeDesignLayout *layout)
   priv->default_context = gtk_style_context_new ();
   gtk_widget_path_append_type (path, GTK_TYPE_WINDOW);
   gtk_style_context_set_path (priv->default_context, path);
+  gtk_style_context_add_class (priv->default_context, GTK_STYLE_CLASS_BACKGROUND);
 
   /* setup static member of rectangles */
   priv->east.width = PADDING + OUTLINE_WIDTH;