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* A Low Level GPU Graphics and Utilities API
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* Copyright (C) 2008,2009,2010 Intel Corporation.
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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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* 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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* 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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* Robert Bragg <robert@linux.intel.com>
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#include "cogl-config.h"
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#include "cogl-util.h"
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#include "cogl-node-private.h"
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_cogl_pipeline_node_init (CoglNode *node)
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_cogl_list_init (&node->children);
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_cogl_pipeline_node_set_parent_real (CoglNode *node,
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CoglNodeUnparentVFunc unparent,
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CoglBool take_strong_reference)
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/* NB: the old parent may indirectly be keeping the new parent alive
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* so we have to ref the new parent before unrefing the old.
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* Note: we take a reference here regardless of
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* take_strong_reference because weak children may need special
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* handling when the parent disposes itself which relies on a
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* consistent link to all weak nodes. Once the node is linked to its
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* parent then we remove the reference at the end if
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* take_strong_reference == FALSE. */
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cogl_object_ref (parent);
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_cogl_list_insert (&parent->children, &node->link);
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node->parent = parent;
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node->has_parent_reference = take_strong_reference;
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/* Now that there is a consistent parent->child link we can remove
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* the parent reference if no reference was requested. If it turns
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* out that the new parent was only being kept alive by the old
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* parent then it will be disposed of here. */
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if (!take_strong_reference)
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cogl_object_unref (parent);
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_cogl_pipeline_node_unparent_real (CoglNode *node)
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CoglNode *parent = node->parent;
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_COGL_RETURN_IF_FAIL (!_cogl_list_empty (&parent->children));
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_cogl_list_remove (&node->link);
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if (node->has_parent_reference)
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cogl_object_unref (parent);
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_cogl_pipeline_node_foreach_child (CoglNode *node,
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CoglNodeChildCallback callback,
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CoglNode *child, *next;
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_cogl_list_for_each_safe (child, next, &node->children, link)
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callback (child, user_data);
added
removed
cogl/cogl/cogl-node.c
