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86 lines
2.6 KiB
C
86 lines
2.6 KiB
C
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/*
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* Cogl
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*
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* An object oriented GL/GLES Abstraction/Utility Layer
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*
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* Copyright (C) 2008,2009,2010 Intel Corporation.
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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
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* <http://www.gnu.org/licenses/>.
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*
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*
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*
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* Authors:
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* Robert Bragg <robert@linux.intel.com>
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*/
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#ifndef __COGL_NODE_PRIVATE_H
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#define __COGL_NODE_PRIVATE_H
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#include "cogl-object-private.h"
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#include "cogl-queue.h"
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typedef struct _CoglNode CoglNode;
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COGL_LIST_HEAD (CoglNodeList, CoglNode);
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/* Pipelines and layers represent their state in a tree structure where
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* some of the state relating to a given pipeline or layer may actually
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* be owned by one if is ancestors in the tree. We have a common data
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* type to track the tree heirachy so we can share code... */
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struct _CoglNode
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{
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/* the parent in terms of class hierarchy, so anything inheriting
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* from CoglNode also inherits from CoglObject. */
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CoglObject _parent;
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/* The parent pipeline/layer */
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CoglNode *parent;
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/* The list entry here contains pointers to the node's siblings */
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COGL_LIST_ENTRY (CoglNode) list_node;
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/* List of children */
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CoglNodeList children;
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/* TRUE if the node took a strong reference on its parent. Weak
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* pipelines for instance don't take a reference on their parent. */
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gboolean has_parent_reference;
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};
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#define COGL_NODE(X) ((CoglNode *)(X))
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void
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_cogl_pipeline_node_init (CoglNode *node);
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typedef void (*CoglNodeUnparentVFunc) (CoglNode *node);
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void
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_cogl_pipeline_node_set_parent_real (CoglNode *node,
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CoglNode *parent,
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CoglNodeUnparentVFunc unparent,
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gboolean take_strong_reference);
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void
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_cogl_pipeline_node_unparent_real (CoglNode *node);
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typedef gboolean (*CoglNodeChildCallback) (CoglNode *child, void *user_data);
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void
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_cogl_pipeline_node_foreach_child (CoglNode *node,
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CoglNodeChildCallback callback,
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void *user_data);
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#endif /* __COGL_NODE_PRIVATE_H */
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