MetaBackgroundActor: make it a public class

https://bugzilla.gnome.org/show_bug.cgi?id=656433

src/meta/meta-background-actor.h

@@ -0,0 +1,65 @@
+/* -*- mode: C; c-file-style: "gnu"; indent-tabs-mode: nil; -*- */
+/*
+ * meta-background-actor.h: Actor for painting the root window background
+ *
+ * Copyright 2010 Red Hat, Inc.
+ *
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU General Public License as
+ * published by the Free Software Foundation; either version 2 of the
+ * License, or (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful, but
+ * WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+ * General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA
+ * 02111-1307, USA.
+ */
+
+#ifndef META_BACKGROUND_ACTOR_H
+#define META_BACKGROUND_ACTOR_H
+
+#include <clutter/clutter.h>
+
+#include <meta/screen.h>
+
+/**
+ * MetaBackgroundActor:
+ *
+ * This class handles tracking and painting the root window background.
+ * By integrating with #MetaWindowGroup we can avoid painting parts of
+ * the background that are obscured by other windows.
+ */
+
+#define META_TYPE_BACKGROUND_ACTOR            (meta_background_actor_get_type ())
+#define META_BACKGROUND_ACTOR(obj)            (G_TYPE_CHECK_INSTANCE_CAST ((obj), META_TYPE_BACKGROUND_ACTOR, MetaBackgroundActor))
+#define META_BACKGROUND_ACTOR_CLASS(klass)    (G_TYPE_CHECK_CLASS_CAST ((klass), META_TYPE_BACKGROUND_ACTOR, MetaBackgroundActorClass))
+#define META_IS_BACKGROUND_ACTOR(obj)         (G_TYPE_CHECK_INSTANCE_TYPE ((obj), META_TYPE_BACKGROUND_ACTOR))
+#define META_IS_BACKGROUND_ACTOR_CLASS(klass) (G_TYPE_CHECK_CLASS_TYPE ((klass), META_TYPE_BACKGROUND_ACTOR))
+#define META_BACKGROUND_ACTOR_GET_CLASS(obj)  (G_TYPE_INSTANCE_GET_CLASS ((obj), META_TYPE_BACKGROUND_ACTOR, MetaBackgroundActorClass))
+
+typedef struct _MetaBackgroundActor        MetaBackgroundActor;
+typedef struct _MetaBackgroundActorClass   MetaBackgroundActorClass;
+typedef struct _MetaBackgroundActorPrivate MetaBackgroundActorPrivate;
+
+struct _MetaBackgroundActorClass
+{
+  ClutterActorClass parent_class;
+};
+
+struct _MetaBackgroundActor
+{
+  ClutterActor parent;
+
+  MetaBackgroundActorPrivate *priv;
+};
+
+GType meta_background_actor_get_type (void);
+
+ClutterActor *meta_background_actor_new_for_screen (MetaScreen *screen);
+
+#endif /* META_BACKGROUND_ACTOR_H */