a0747e8c2d
Bug 882 - Allow child properties for containers implementing the ClutterContainer interface (Øyvind Kolås) * clutter/clutter-child-meta.[ch]: Base class for the metadata of a ClutterActor inside a ClutterContainer; the ChildMeta object implements a wrapper for storing data that is attached to a ClutterActor only when it's part of a ClutterContainer. The ChildMeta object is used to store the child properties accessible through the ClutterContainer API. * clutter/clutter-container.[ch]: Creates the ChildMeta for each actor, in case the Container specifies the ChildMeta type to use. * clutter/Makefile.am: Add clutter-child-meta.[ch] to the build. * clutter/clutter-marshal.list: Add the marshaller for the ClutterContainer::child-notify signal. * clutter/clutter-types.h: Declare ClutterContainer and ClutterChildMeta to avoid recursive inclusion.
161 lines
4.2 KiB
C
161 lines
4.2 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, write to the
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* Free Software Foundation, Inc., 59 Temple Place - Suite 330,
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* Boston, MA 02111-1307, USA.
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*/
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/**
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* SECTION:clutter-child-data
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* @short_description: Wrapper for actors inside a container
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*
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* #ClutterChildMeta is a wrapper object created by #ClutterContainer
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* implementations in order to store child-specific data and properties.
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*
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* A #ClutterChildMeta wraps a #ClutterActor inside a #ClutterContainer.
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*
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* #ClutterChildMeta is available since Clutter 0.8
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*/
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#ifdef HAVE_CONFIG_H
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#include "config.h"
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#endif
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#include "clutter-child-meta.h"
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#include "clutter-container.h"
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#include "clutter-debug.h"
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#include "clutter-private.h"
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G_DEFINE_TYPE (ClutterChildMeta, clutter_child_meta, G_TYPE_OBJECT);
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enum
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{
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PROP_0,
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PROP_CONTAINER,
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PROP_ACTOR
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};
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static void
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clutter_child_meta_get_property (GObject *object,
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guint prop_id,
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GValue *value,
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GParamSpec *pspec)
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{
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ClutterChildMeta *child_meta = CLUTTER_CHILD_META (object);
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switch (prop_id)
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{
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case PROP_CONTAINER:
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g_value_set_object (value, child_meta->container);
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break;
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case PROP_ACTOR:
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g_value_set_object (value, child_meta->actor);
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break;
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default:
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G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
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break;
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}
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}
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static void
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clutter_child_meta_class_init (ClutterChildMetaClass *klass)
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{
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GObjectClass *gobject_class = G_OBJECT_CLASS (klass);
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GParamSpec *pspec;
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gobject_class->get_property = clutter_child_meta_get_property;
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/**
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* ClutterChildMeta:container:
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*
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* The #ClutterContainer that created this #ClutterChildMeta.
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*
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* Since: 0.8
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*/
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pspec = g_param_spec_object ("container",
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"Container",
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"The container that created this data",
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CLUTTER_TYPE_CONTAINER,
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CLUTTER_PARAM_READABLE);
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g_object_class_install_property (gobject_class, PROP_CONTAINER, pspec);
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/**
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* ClutterChildMeta:actor:
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*
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* The #ClutterActor being wrapped by this #ClutterChildMeta
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*
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* Since: 0.8
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*/
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pspec = g_param_spec_object ("actor",
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"Actor",
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"The actor wrapped by this data",
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CLUTTER_TYPE_ACTOR,
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CLUTTER_PARAM_READABLE);
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g_object_class_install_property (gobject_class, PROP_ACTOR, pspec);
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}
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static void
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clutter_child_meta_init (ClutterChildMeta *self)
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{
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}
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/**
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* clutter_child_meta_get_container:
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* @data: a #ClutterChildMeta
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*
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* Retrieves the container using @data
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*
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* Return value: a #ClutterContainer
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*
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* Since: 0.8
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*/
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ClutterContainer *
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clutter_child_meta_get_container (ClutterChildMeta *data)
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{
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g_return_val_if_fail (CLUTTER_IS_CHILD_META (data), NULL);
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return data->container;
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}
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/**
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* clutter_child_meta_get_actor:
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* @data: a #ClutterChildMeta
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*
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* Retrieves the actor wrapped by @data
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*
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* Return value: a #ClutterActor
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*
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* Since: 0.8
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*/
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ClutterActor *
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clutter_child_meta_get_actor (ClutterChildMeta *data)
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{
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g_return_val_if_fail (CLUTTER_IS_CHILD_META (data), NULL);
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return data->actor;
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}
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