[mutter] compositor: remove the overlay_group concept

[Giovanni Campagna <gcampagna src gnome org>]

commit e10804727d6b48947753958c30f41b571c1cc6e7
Author: Giovanni Campagna <gcampagna src gnome org>
Date:   Wed May 22 18:24:00 2013 +0200

    compositor: remove the overlay_group concept
    
    The hierarchy handling is handled in the shell by adding stuff
    directly to the uiGroup, and we have a dedicated actor for
    the overview there, so we don't need this anymore.
    
    https://bugzilla.gnome.org/show_bug.cgi?id=700735

 src/compositor/compositor.c  |   27 ++-------------------------
 src/meta/compositor-mutter.h |    1 -
 2 files changed, 2 insertions(+), 26 deletions(-)
---
diff --git a/src/compositor/compositor.c b/src/compositor/compositor.c
index dbaaca2..86abfaf 100644
--- a/src/compositor/compositor.c
+++ b/src/compositor/compositor.c
@@ -53,17 +53,15 @@
  *
  * # Containers #
  *
- * There's three containers in the stage that can be used to place actors, here
+ * There's two containers in the stage that are used to place window actors, here
  * are listed in the order in which they are painted:
  *
  * - window group, accessible with meta_get_window_group_for_screen()
  * - top window group, accessible with meta_get_top_window_group_for_screen()
- * - overlay group, accessible with meta_get_overlay_group_for_screen()
  *
  * Mutter will place actors representing windows in the window group, except for
  * override-redirect windows (ie. popups and menus) which will be placed in the
- * top window group. Mutter won't put any actors in the overlay group, but it's
- * intended for compositors to place there panel, dashes, status bars, etc.
+ * top window group.
  */
 
 #include <config.h>
@@ -256,23 +254,6 @@ meta_get_stage_for_screen (MetaScreen *screen)
 }
 
 /**
- * meta_get_overlay_group_for_screen:
- * @screen: a #MetaScreen
- *
- * Returns: (transfer none): The overlay group corresponding to @screen
- */
-ClutterActor *
-meta_get_overlay_group_for_screen (MetaScreen *screen)
-{
-  MetaCompScreen *info = meta_screen_get_compositor_data (screen);
-
-  if (!info)
-    return NULL;
-
-  return info->overlay_group;
-}
-
-/**
  * meta_get_window_group_for_screen:
  * @screen: a #MetaScreen
  *
@@ -649,11 +630,9 @@ meta_compositor_manage_screen (MetaCompositor *compositor,
 
   info->window_group = meta_window_group_new (screen);
   info->top_window_group = meta_window_group_new (screen);
-  info->overlay_group = clutter_actor_new ();
 
   clutter_actor_add_child (info->stage, info->window_group);
   clutter_actor_add_child (info->stage, info->top_window_group);
-  clutter_actor_add_child (info->stage, info->overlay_group);
 
   info->plugin_mgr = meta_plugin_manager_new (screen);
 
@@ -684,8 +663,6 @@ meta_compositor_manage_screen (MetaCompositor *compositor,
       info->pending_input_region = None;
     }
 
-  clutter_actor_show (info->overlay_group);
-
   /* Map overlay window before redirecting windows offscreen so we catch their
    * contents until we show the stage.
    */
diff --git a/src/meta/compositor-mutter.h b/src/meta/compositor-mutter.h
index 665330a..357b42e 100644
--- a/src/meta/compositor-mutter.h
+++ b/src/meta/compositor-mutter.h
@@ -35,7 +35,6 @@
 
 /* Public compositor API */
 ClutterActor *meta_get_stage_for_screen         (MetaScreen *screen);
-ClutterActor *meta_get_overlay_group_for_screen (MetaScreen *screen);
 Window        meta_get_overlay_window           (MetaScreen *screen);
 GList        *meta_get_window_actors            (MetaScreen *screen);
 ClutterActor *meta_get_window_group_for_screen  (MetaScreen *screen);