mirror of
https://github.com/brl/mutter.git
synced 2024-12-27 13:22:15 +00:00
54735dec84
The coding style has for a long time said to avoid using redundant glib
data types such as gint or gchar etc because we feel that they make the
code look unnecessarily foreign to developers coming from outside of the
Gnome developer community.
Note: When we tried to find the historical rationale for the types we
just found that they were apparently only added for consistent syntax
highlighting which didn't seem that compelling.
Up until now we have been continuing to use some of the platform
specific type such as gint{8,16,32,64} and gsize but this patch switches
us over to using the standard c99 equivalents instead so we can further
ensure that our code looks familiar to the widest range of C developers
who might potentially contribute to Cogl.
So instead of using the gint{8,16,32,64} and guint{8,16,32,64} types this
switches all Cogl code to instead use the int{8,16,32,64}_t and
uint{8,16,32,64}_t c99 types instead.
Instead of gsize we now use size_t
For now we are not going to use the c99 _Bool type and instead we have
introduced a new CoglBool type to use instead of gboolean.
Reviewed-by: Neil Roberts <neil@linux.intel.com>
(cherry picked from commit 5967dad2400d32ca6319cef6cb572e81bf2c15f0)
105 lines
2.9 KiB
C
105 lines
2.9 KiB
C
/*
|
|
* Cogl
|
|
*
|
|
* An object oriented GL/GLES Abstraction/Utility Layer
|
|
*
|
|
* Copyright (C) 2008,2009,2010 Intel Corporation.
|
|
*
|
|
* This library is free software; you can redistribute it and/or
|
|
* modify it under the terms of the GNU Lesser General Public
|
|
* License as published by the Free Software Foundation; either
|
|
* version 2 of the License, or (at your option) any later version.
|
|
*
|
|
* This library is distributed in the hope that it will be useful,
|
|
* but WITHOUT ANY WARRANTY; without even the implied warranty of
|
|
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
|
|
* Lesser General Public License for more details.
|
|
*
|
|
* You should have received a copy of the GNU Lesser General Public
|
|
* License along with this library. If not, see
|
|
* <http://www.gnu.org/licenses/>.
|
|
*
|
|
*
|
|
*
|
|
* Authors:
|
|
* Robert Bragg <robert@linux.intel.com>
|
|
*/
|
|
|
|
#ifdef HAVE_CONFIG_H
|
|
#include "config.h"
|
|
#endif
|
|
|
|
#include "cogl-util.h"
|
|
#include "cogl-node-private.h"
|
|
|
|
void
|
|
_cogl_pipeline_node_init (CoglNode *node)
|
|
{
|
|
node->parent = NULL;
|
|
COGL_LIST_INIT (&node->children);
|
|
}
|
|
|
|
void
|
|
_cogl_pipeline_node_set_parent_real (CoglNode *node,
|
|
CoglNode *parent,
|
|
CoglNodeUnparentVFunc unparent,
|
|
CoglBool take_strong_reference)
|
|
{
|
|
/* NB: the old parent may indirectly be keeping the new parent alive
|
|
* so we have to ref the new parent before unrefing the old.
|
|
*
|
|
* Note: we take a reference here regardless of
|
|
* take_strong_reference because weak children may need special
|
|
* handling when the parent disposes itself which relies on a
|
|
* consistent link to all weak nodes. Once the node is linked to its
|
|
* parent then we remove the reference at the end if
|
|
* take_strong_reference == FALSE. */
|
|
cogl_object_ref (parent);
|
|
|
|
if (node->parent)
|
|
unparent (node);
|
|
|
|
COGL_LIST_INSERT_HEAD (&parent->children, node, list_node);
|
|
|
|
node->parent = parent;
|
|
node->has_parent_reference = take_strong_reference;
|
|
|
|
/* Now that there is a consistent parent->child link we can remove
|
|
* the parent reference if no reference was requested. If it turns
|
|
* out that the new parent was only being kept alive by the old
|
|
* parent then it will be disposed of here. */
|
|
if (!take_strong_reference)
|
|
cogl_object_unref (parent);
|
|
}
|
|
|
|
void
|
|
_cogl_pipeline_node_unparent_real (CoglNode *node)
|
|
{
|
|
CoglNode *parent = node->parent;
|
|
|
|
if (parent == NULL)
|
|
return;
|
|
|
|
_COGL_RETURN_IF_FAIL (!COGL_LIST_EMPTY (&parent->children));
|
|
|
|
COGL_LIST_REMOVE (node, list_node);
|
|
|
|
if (node->has_parent_reference)
|
|
cogl_object_unref (parent);
|
|
|
|
node->parent = NULL;
|
|
}
|
|
|
|
void
|
|
_cogl_pipeline_node_foreach_child (CoglNode *node,
|
|
CoglNodeChildCallback callback,
|
|
void *user_data)
|
|
{
|
|
CoglNode *child, *next;
|
|
|
|
COGL_LIST_FOREACH_SAFE (child, &node->children, list_node, next)
|
|
callback (child, user_data);
|
|
}
|
|
|
|
|