mirror of
https://github.com/brl/mutter.git
synced 2024-12-25 12:32:05 +00:00
74c8271db6
* clutter/clutter-id-pool.c: (clutter_id_pool_free):
Use g_slice_free not g_free.
* clutter/clutter-main.c: (_clutter_do_pick):
Dont 'over read' the framebuffer when picking (#839, Neil Roberts)
124 lines
3.1 KiB
C
124 lines
3.1 KiB
C
/*
|
|
* Clutter.
|
|
*
|
|
* An OpenGL based 'interactive canvas' library.
|
|
*
|
|
* Authored By Matthew Allum <mallum@openedhand.com>
|
|
*
|
|
* Copyright (C) 2006-2008 OpenedHand
|
|
*
|
|
* 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, write to the
|
|
* Free Software Foundation, Inc., 59 Temple Place - Suite 330,
|
|
* Boston, MA 02111-1307, USA.
|
|
*
|
|
* ClutterIDPool: pool of reusable integer ids associated with pointers.
|
|
*
|
|
* Author: Øyvind Kolås <pippin@o-hand-com>
|
|
*
|
|
*/
|
|
|
|
#ifdef HAVE_CONFIG_H
|
|
#include "config.h"
|
|
#endif
|
|
|
|
#include "clutter-debug.h"
|
|
#include "clutter-id-pool.h"
|
|
|
|
struct _ClutterIDPool
|
|
{
|
|
GArray *array; /* Array of pointers */
|
|
GSList *free_ids; /* A stack of freed ids */
|
|
};
|
|
|
|
ClutterIDPool *
|
|
clutter_id_pool_new (guint initial_size)
|
|
{
|
|
ClutterIDPool *self;
|
|
|
|
self = g_slice_new (ClutterIDPool);
|
|
|
|
self->array = g_array_sized_new (FALSE, FALSE,
|
|
sizeof (gpointer), initial_size);
|
|
self->free_ids = NULL;
|
|
return self;
|
|
}
|
|
|
|
void
|
|
clutter_id_pool_free (ClutterIDPool *id_pool)
|
|
{
|
|
g_return_if_fail (id_pool != NULL);
|
|
|
|
g_array_free (id_pool->array, TRUE);
|
|
g_slist_free (id_pool->free_ids);
|
|
g_slice_free (ClutterIDPool, id_pool);
|
|
}
|
|
|
|
guint32
|
|
clutter_id_pool_add (ClutterIDPool *id_pool,
|
|
gpointer ptr)
|
|
{
|
|
gpointer *array;
|
|
guint32 id;
|
|
|
|
g_return_val_if_fail (id_pool != NULL, 0);
|
|
|
|
if (id_pool->free_ids) /* There are items on our freelist, reuse one */
|
|
{
|
|
array = (void*) id_pool->array->data;
|
|
id = GPOINTER_TO_UINT (id_pool->free_ids->data);
|
|
|
|
id_pool->free_ids = g_slist_remove (id_pool->free_ids,
|
|
id_pool->free_ids->data);
|
|
array[id] = ptr;
|
|
return id;
|
|
}
|
|
|
|
/* Allocate new id */
|
|
id = id_pool->array->len;
|
|
g_array_append_val (id_pool->array, ptr);
|
|
return id;
|
|
}
|
|
|
|
void
|
|
clutter_id_pool_remove (ClutterIDPool *id_pool,
|
|
guint32 id)
|
|
{
|
|
gpointer *array;
|
|
|
|
g_return_if_fail (id_pool != NULL);
|
|
array = (void*) id_pool->array->data;
|
|
|
|
array[id] = (void*)0xdecafbad; /* set pointer to a recognizably voided
|
|
value */
|
|
|
|
id_pool->free_ids = g_slist_prepend (id_pool->free_ids,
|
|
GUINT_TO_POINTER (id));
|
|
}
|
|
|
|
gpointer
|
|
clutter_id_pool_lookup (ClutterIDPool *id_pool,
|
|
guint32 id)
|
|
{
|
|
gpointer *array;
|
|
|
|
g_return_val_if_fail (id_pool != NULL, NULL);
|
|
g_return_val_if_fail (id_pool->array != NULL, NULL);
|
|
|
|
g_return_val_if_fail (id < id_pool->array->len, NULL);
|
|
|
|
array = (void*) id_pool->array->data;
|
|
|
|
return array[id];
|
|
}
|