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123 lines
4.1 KiB
C
123 lines
4.1 KiB
C
/*
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* Clutter.
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*
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* An OpenGL based 'interactive canvas' library.
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*
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* Authored By Matthew Allum <mallum@openedhand.com>
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* Jorn Baayen <jorn@openedhand.com>
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* Emmanuele Bassi <ebassi@openedhand.com>
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* Tomas Frydrych <tf@openedhand.com>
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* Øyvind Kolås <ok@openedhand.com>
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*
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* Copyright (C) 2008 OpenedHand
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*
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* This library is free software; you can redistribute it and/or
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* modify it under the terms of the GNU Lesser General Public
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* License as published by the Free Software Foundation; either
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* version 2 of the License, or (at your option) any later version.
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*
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* This library is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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* Lesser General Public License for more details.
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*
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* You should have received a copy of the GNU Lesser General Public
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* License along with this library. If not, see <http://www.gnu.org/licenses/>.
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*/
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#ifndef __CLUTTER_CHILD_META_H__
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#define __CLUTTER_CHILD_META_H__
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#if !defined(__CLUTTER_H_INSIDE__) && !defined(CLUTTER_COMPILATION)
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#error "Only <clutter/clutter.h> can be included directly."
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#endif
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#include <glib-object.h>
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#include <clutter/clutter-types.h>
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G_BEGIN_DECLS
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#define CLUTTER_TYPE_CHILD_META (clutter_child_meta_get_type ())
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#define CLUTTER_CHILD_META(obj) (G_TYPE_CHECK_INSTANCE_CAST ((obj), CLUTTER_TYPE_CHILD_META, ClutterChildMeta))
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#define CLUTTER_CHILD_META_CLASS(klass) (G_TYPE_CHECK_CLASS_CAST ((klass), CLUTTER_TYPE_CHILD_META, ClutterChildMetaClass))
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#define CLUTTER_IS_CHILD_META(obj) (G_TYPE_CHECK_INSTANCE_TYPE ((obj), CLUTTER_TYPE_CHILD_META))
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#define CLUTTER_IS_CHILD_META_CLASS(klass) (G_TYPE_CHECK_CLASS_TYPE ((klass), CLUTTER_TYPE_CHILD_META))
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#define CLUTTER_CHILD_META_GET_CLASS(obj) (G_TYPE_INSTANCE_GET_CLASS ((obj), CLUTTER_TYPE_CHILD_META, ClutterChildMetaClass))
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typedef struct _ClutterChildMetaClass ClutterChildMetaClass;
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/**
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* ClutterChildMeta:
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* @container: the container handling this data
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* @actor: the actor wrapped by this data
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*
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* Base interface for container specific state for child actors. A child
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* data is meant to be used when you need to keep track of information
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* about each individual child added to a container.
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*
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* In order to use it you should create your own subclass of
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* #ClutterChildMeta and set the #ClutterContainerIface child_meta_type
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* interface member to your subclass type, like:
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*
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* |[
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* static void
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* my_container_iface_init (ClutterContainerIface *iface)
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* {
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* // set the rest of the #ClutterContainer vtable
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*
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* container_iface->child_meta_type = MY_TYPE_CHILD_META;
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* }
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* ]|
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*
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* This will automatically create a #ClutterChildMeta of type
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* `MY_TYPE_CHILD_META` for every actor that is added to the container.
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*
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* The child data for an actor can be retrieved using the
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* clutter_container_get_child_meta() function.
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*
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* The properties of the data and your subclass can be manipulated with
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* clutter_container_child_set() and clutter_container_child_get() which
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* act like g_object_set() and g_object_get().
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*
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* You can provide hooks for your own storage as well as control the
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* instantiation by overriding the #ClutterContainerIface virtual functions
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* #ClutterContainerIface.create_child_meta(), #ClutterContainerIface.destroy_child_meta(),
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* and #ClutterContainerIface.get_child_meta().
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*
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* Since: 0.8
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*/
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struct _ClutterChildMeta
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{
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/*< private >*/
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GObject parent_instance;
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/*< public >*/
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ClutterContainer *container;
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ClutterActor *actor;
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};
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/**
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* ClutterChildMetaClass:
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*
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* The #ClutterChildMetaClass contains only private data
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*
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* Since: 0.8
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*/
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struct _ClutterChildMetaClass
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{
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/*< private >*/
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GObjectClass parent_class;
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};
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CLUTTER_EXPORT
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GType clutter_child_meta_get_type (void) G_GNUC_CONST;
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CLUTTER_EXPORT
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ClutterContainer * clutter_child_meta_get_container (ClutterChildMeta *data);
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CLUTTER_EXPORT
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ClutterActor * clutter_child_meta_get_actor (ClutterChildMeta *data);
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G_END_DECLS
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#endif /* __CLUTTER_CHILD_META_H__ */
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