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/*
* Cogl
*
* A Low-Level GPU Graphics and Utilities API
*
* Copyright (C) 2008,2009,2010 Intel Corporation.
*
* Permission is hereby granted, free of charge, to any person
* obtaining a copy of this software and associated documentation
* files (the "Software"), to deal in the Software without
* restriction, including without limitation the rights to use, copy,
* modify, merge, publish, distribute, sublicense, and/or sell copies
* of the Software, and to permit persons to whom the Software is
* furnished to do so, subject to the following conditions:
*
* The above copyright notice and this permission notice shall be
* included in all copies or substantial portions of the Software.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
* EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
* NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS
* BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN
* ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
* CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
* SOFTWARE.
*
*
*
* Authors:
* Robert Bragg <robert@linux.intel.com>
*/
#ifndef __COGL_NODE_PRIVATE_H
#define __COGL_NODE_PRIVATE_H
#include "cogl-object-private.h"
#include "cogl-list.h"
typedef struct _CoglNode CoglNode;
/* Pipelines and layers represent their state in a tree structure where
* some of the state relating to a given pipeline or layer may actually
* be owned by one if is ancestors in the tree. We have a common data
* type to track the tree heirachy so we can share code... */
struct _CoglNode
{
/* the parent in terms of class hierarchy, so anything inheriting
* from CoglNode also inherits from CoglObject. */
CoglObject _parent;
/* The parent pipeline/layer */
CoglNode *parent;
/* The list entry here contains pointers to the node's siblings */
CoglList link;
/* List of children */
CoglList children;
/* TRUE if the node took a strong reference on its parent. Weak
* pipelines for instance don't take a reference on their parent. */
CoglBool has_parent_reference;
};
#define COGL_NODE(X) ((CoglNode *)(X))
void
_cogl_pipeline_node_init (CoglNode *node);
typedef void (*CoglNodeUnparentVFunc) (CoglNode *node);
void
_cogl_pipeline_node_set_parent_real (CoglNode *node,
CoglNode *parent,
CoglNodeUnparentVFunc unparent,
CoglBool take_strong_reference);
void
_cogl_pipeline_node_unparent_real (CoglNode *node);
typedef CoglBool (*CoglNodeChildCallback) (CoglNode *child, void *user_data);
void
_cogl_pipeline_node_foreach_child (CoglNode *node,
CoglNodeChildCallback callback,
void *user_data);
#endif /* __COGL_NODE_PRIVATE_H */
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