89 lines
2.9 KiB
C
89 lines
2.9 KiB
C
/*
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* Cogl
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*
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* A Low Level GPU Graphics and Utilities API
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*
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* Copyright (C) 2008,2009,2010 Intel Corporation.
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*
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* Permission is hereby granted, free of charge, to any person
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* obtaining a copy of this software and associated documentation
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* files (the "Software"), to deal in the Software without
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* restriction, including without limitation the rights to use, copy,
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* modify, merge, publish, distribute, sublicense, and/or sell copies
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* of the Software, and to permit persons to whom the Software is
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* furnished to do so, subject to the following conditions:
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*
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* The above copyright notice and this permission notice shall be
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* included in all copies or substantial portions of the Software.
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*
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* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
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* EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
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* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
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* NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS
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* BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN
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* ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
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* CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
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* SOFTWARE.
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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-list.h"
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typedef struct _CoglNode 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 hierarchy 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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CoglList link;
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/* List of children */
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CoglList 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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