[gtk+] notebook: add style classes for orientation to the header

[William Jon McCann <mccann src gnome org>]

commit 053433010bfb6b4542652453ad1580c5f2e7525b
Author: William Jon McCann <william jon mccann gmail com>
Date:   Fri Oct 4 17:53:55 2013 -0400

    notebook: add style classes for orientation to the header

 gtk/gtknotebook.c |    7 ++++++-
 1 files changed, 6 insertions(+), 1 deletions(-)
---
diff --git a/gtk/gtknotebook.c b/gtk/gtknotebook.c
index 97a8f30..0f113c4 100644
--- a/gtk/gtknotebook.c
+++ b/gtk/gtknotebook.c
@@ -5209,31 +5209,36 @@ gtk_notebook_paint (GtkWidget    *widget,
   header_width = width;
   header_height = height;
 
+  gtk_style_context_save (context);
+
   switch (tab_pos)
     {
     case GTK_POS_TOP:
+      gtk_style_context_add_class (context, GTK_STYLE_CLASS_TOP);
       y += page->allocation.height;
       height -= page->allocation.height;
       header_height = page->allocation.height;
       break;
     case GTK_POS_BOTTOM:
+      gtk_style_context_add_class (context, GTK_STYLE_CLASS_BOTTOM);
       height -= page->allocation.height;
       header_y += height;
       header_height = page->allocation.height;
       break;
     case GTK_POS_LEFT:
+      gtk_style_context_add_class (context, GTK_STYLE_CLASS_LEFT);
       x += page->allocation.width;
       width -= page->allocation.width;
       header_width = page->allocation.width;
       break;
     case GTK_POS_RIGHT:
+      gtk_style_context_add_class (context, GTK_STYLE_CLASS_RIGHT);
       width -= page->allocation.width;
       header_width = page->allocation.width;
       header_x += width;
       break;
     }
 
-  gtk_style_context_save (context);
   gtk_style_context_add_class (context, GTK_STYLE_CLASS_HEADER);
   gtk_render_background (context, cr,
                          header_x, header_y, header_width, header_height);