[mutter] compositor: don't show stage right away

[Ray Strode <halfline src gnome org>]

commit 160150d12710f26d3abb5f4889cf4f91ee0b6438
Author: Ray Strode <rstrode redhat com>
Date:   Fri Mar 1 14:34:41 2013 -0500

    compositor: don't show stage right away
    
    We don't want the stage shown until gnome-shell is ready for it.
    This commit ensures the stage isn't shown implicitly.
    
    https://bugzilla.gnome.org/show_bug.cgi?id=694321

 src/compositor/compositor.c      |    1 -
 src/compositor/plugins/default.c |   26 ++++++++++++++++++++++++++
 2 files changed, 26 insertions(+), 1 deletions(-)
---
diff --git a/src/compositor/compositor.c b/src/compositor/compositor.c
index fb682ed..c5021eb 100644
--- a/src/compositor/compositor.c
+++ b/src/compositor/compositor.c
@@ -611,7 +611,6 @@ meta_compositor_manage_screen (MetaCompositor *compositor,
     }
 
   clutter_actor_show (info->overlay_group);
-  clutter_actor_show (info->stage);
 }
 
 void
diff --git a/src/compositor/plugins/default.c b/src/compositor/plugins/default.c
index 71839c2..228fb19 100644
--- a/src/compositor/plugins/default.c
+++ b/src/compositor/plugins/default.c
@@ -23,6 +23,7 @@
 
 #include <meta/meta-plugin.h>
 #include <meta/window.h>
+#include <meta/util.h>
 
 #include <libintl.h>
 #define _(x) dgettext (GETTEXT_PACKAGE, x)
@@ -68,6 +69,7 @@ struct _MetaDefaultPluginClass
 
 static GQuark actor_data_quark = 0;
 
+static void start      (MetaPlugin      *plugin);
 static void minimize   (MetaPlugin      *plugin,
                         MetaWindowActor *actor);
 static void map        (MetaPlugin      *plugin,
@@ -191,6 +193,7 @@ meta_default_plugin_class_init (MetaDefaultPluginClass *klass)
   gobject_class->set_property    = meta_default_plugin_set_property;
   gobject_class->get_property    = meta_default_plugin_get_property;
 
+  plugin_class->start            = start;
   plugin_class->map              = map;
   plugin_class->minimize         = minimize;
   plugin_class->maximize         = maximize;
@@ -282,6 +285,29 @@ on_switch_workspace_effect_complete (ClutterTimeline *timeline, gpointer data)
   meta_plugin_switch_workspace_completed (plugin);
 }
 
+static gboolean
+show_stage (MetaPlugin *plugin)
+{
+  MetaScreen *screen;
+  ClutterActor *stage;
+
+  screen = meta_plugin_get_screen (plugin);
+  stage = meta_get_stage_for_screen (screen);
+
+  clutter_actor_show (stage);
+
+  return FALSE;
+}
+
+static void
+start (MetaPlugin *plugin)
+{
+  meta_later_add (META_LATER_BEFORE_REDRAW,
+                  (GSourceFunc) show_stage,
+                  plugin,
+                  NULL);
+}
+
 static void
 switch_workspace (MetaPlugin *plugin,
                   gint from, gint to,