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/*
* Clutter.
*
* An OpenGL based 'interactive canvas' library.
*
* Authored By Matthew Allum <mallum@openedhand.com>
* Jorn Baayen <jorn@openedhand.com>
* Emmanuele Bassi <ebassi@openedhand.com>
* Tomas Frydrych <tf@openedhand.com>
* Øyvind Kolås <ok@openedhand.com>
*
* Copyright (C) 2008 OpenedHand
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser General Public
* License as published by the Free Software Foundation; either
* version 2 of the License, or (at your option) any later version.
*
* This library 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
* Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public
* License along with this library. If not, see <http://www.gnu.org/licenses/>.
*/
#ifndef __CLUTTER_CHILD_META_H__
#define __CLUTTER_CHILD_META_H__
#if !defined(__CLUTTER_H_INSIDE__) && !defined(CLUTTER_COMPILATION)
#error "Only <clutter/clutter.h> can be included directly."
#endif
#include <glib-object.h>
#include <clutter/clutter-types.h>
G_BEGIN_DECLS
#define CLUTTER_TYPE_CHILD_META (clutter_child_meta_get_type ())
#define CLUTTER_CHILD_META(obj) (G_TYPE_CHECK_INSTANCE_CAST ((obj), CLUTTER_TYPE_CHILD_META, ClutterChildMeta))
#define CLUTTER_CHILD_META_CLASS(klass) (G_TYPE_CHECK_CLASS_CAST ((klass), CLUTTER_TYPE_CHILD_META, ClutterChildMetaClass))
#define CLUTTER_IS_CHILD_META(obj) (G_TYPE_CHECK_INSTANCE_TYPE ((obj), CLUTTER_TYPE_CHILD_META))
#define CLUTTER_IS_CHILD_META_CLASS(klass) (G_TYPE_CHECK_CLASS_TYPE ((klass), CLUTTER_TYPE_CHILD_META))
#define CLUTTER_CHILD_META_GET_CLASS(obj) (G_TYPE_INSTANCE_GET_CLASS ((obj), CLUTTER_TYPE_CHILD_META, ClutterChildMetaClass))
typedef struct _ClutterChildMetaClass ClutterChildMetaClass;
/**
* ClutterChildMeta:
* @container: the container handling this data
* @actor: the actor wrapped by this data
*
* Base interface for container specific state for child actors. A child
* data is meant to be used when you need to keep track of information
* about each individual child added to a container.
*
* In order to use it you should create your own subclass of
* #ClutterChildMeta and set the #ClutterContainerIface child_meta_type
* interface member to your subclass type, like:
*
* |[
* static void
* my_container_iface_init (ClutterContainerIface *iface)
* {
* // set the rest of the #ClutterContainer vtable
*
* container_iface->child_meta_type = MY_TYPE_CHILD_META;
* }
* ]|
*
* This will automatically create a #ClutterChildMeta of type
* `MY_TYPE_CHILD_META` for every actor that is added to the container.
*
* The child data for an actor can be retrieved using the
* clutter_container_get_child_meta() function.
*
* The properties of the data and your subclass can be manipulated with
* clutter_container_child_set() and clutter_container_child_get() which
* act like g_object_set() and g_object_get().
*
* You can provide hooks for your own storage as well as control the
* instantiation by overriding the #ClutterContainerIface virtual functions
* #ClutterContainerIface.create_child_meta(), #ClutterContainerIface.destroy_child_meta(),
* and #ClutterContainerIface.get_child_meta().
*
* Since: 0.8
*/
struct _ClutterChildMeta
{
/*< private >*/
GObject parent_instance;
/*< public >*/
ClutterContainer *container;
ClutterActor *actor;
};
/**
* ClutterChildMetaClass:
*
* The #ClutterChildMetaClass contains only private data
*
* Since: 0.8
*/
struct _ClutterChildMetaClass
{
/*< private >*/
GObjectClass parent_class;
};
CLUTTER_AVAILABLE_IN_ALL
GType clutter_child_meta_get_type (void) G_GNUC_CONST;
CLUTTER_AVAILABLE_IN_ALL
ClutterContainer * clutter_child_meta_get_container (ClutterChildMeta *data);
CLUTTER_AVAILABLE_IN_ALL
ClutterActor * clutter_child_meta_get_actor (ClutterChildMeta *data);
G_END_DECLS
#endif /* __CLUTTER_CHILD_META_H__ */
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