[gtk+] notebook: inform the theme to draw borders when requested

[William Jon McCann <mccann src gnome org>]

commit 6f17c408e69253a4f3375596aa8514ba7cb5cbb0
Author: William Jon McCann <william jon mccann gmail com>
Date:   Fri Oct 4 18:01:31 2013 -0400

    notebook: inform the theme to draw borders when requested
    
    When the show-border property is TRUE ask the theme to draw
    borders on the notebook header.

 gtk/gtknotebook.c |    2 ++
 1 files changed, 2 insertions(+), 0 deletions(-)
---
diff --git a/gtk/gtknotebook.c b/gtk/gtknotebook.c
index 0f113c4..f958d82 100644
--- a/gtk/gtknotebook.c
+++ b/gtk/gtknotebook.c
@@ -5240,6 +5240,8 @@ gtk_notebook_paint (GtkWidget    *widget,
     }
 
   gtk_style_context_add_class (context, GTK_STYLE_CLASS_HEADER);
+  if (priv->show_border)
+    gtk_style_context_add_class (context, GTK_STYLE_CLASS_FRAME);
   gtk_render_background (context, cr,
                          header_x, header_y, header_width, header_height);
   gtk_render_frame (context, cr,