mutter/cogl/cogl-object.h

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/*
* Cogl
*
This re-licenses Cogl 1.18 under the MIT license Since the Cogl 1.18 branch is actively maintained in parallel with the master branch; this is a counter part to commit 1b83ef938fc16b which re-licensed the master branch to use the MIT license. This re-licensing is a follow up to the proposal that was sent to the Cogl mailing list: http://lists.freedesktop.org/archives/cogl/2013-December/001465.html Note: there was a copyright assignment policy in place for Clutter (and therefore Cogl which was part of Clutter at the time) until the 11th of June 2010 and so we only checked the details after that point (commit 0bbf50f905) For each file, authors were identified via this Git command: $ git blame -p -C -C -C20 -M -M10 0bbf50f905..HEAD We received blanket approvals for re-licensing all Red Hat and Collabora contributions which reduced how many people needed to be contacted individually: - http://lists.freedesktop.org/archives/cogl/2013-December/001470.html - http://lists.freedesktop.org/archives/cogl/2014-January/001536.html Individual approval requests were sent to all the other identified authors who all confirmed the re-license on the Cogl mailinglist: http://lists.freedesktop.org/archives/cogl/2014-January As well as updating the copyright header in all sources files, the COPYING file has been updated to reflect the license change and also document the other licenses used in Cogl such as the SGI Free Software License B, version 2.0 and the 3-clause BSD license. This patch was not simply cherry-picked from master; but the same methodology was used to check the source files.
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* A Low Level GPU Graphics and Utilities API
*
* Copyright (C) 2009,2010 Intel Corporation.
*
This re-licenses Cogl 1.18 under the MIT license Since the Cogl 1.18 branch is actively maintained in parallel with the master branch; this is a counter part to commit 1b83ef938fc16b which re-licensed the master branch to use the MIT license. This re-licensing is a follow up to the proposal that was sent to the Cogl mailing list: http://lists.freedesktop.org/archives/cogl/2013-December/001465.html Note: there was a copyright assignment policy in place for Clutter (and therefore Cogl which was part of Clutter at the time) until the 11th of June 2010 and so we only checked the details after that point (commit 0bbf50f905) For each file, authors were identified via this Git command: $ git blame -p -C -C -C20 -M -M10 0bbf50f905..HEAD We received blanket approvals for re-licensing all Red Hat and Collabora contributions which reduced how many people needed to be contacted individually: - http://lists.freedesktop.org/archives/cogl/2013-December/001470.html - http://lists.freedesktop.org/archives/cogl/2014-January/001536.html Individual approval requests were sent to all the other identified authors who all confirmed the re-license on the Cogl mailinglist: http://lists.freedesktop.org/archives/cogl/2014-January As well as updating the copyright header in all sources files, the COPYING file has been updated to reflect the license change and also document the other licenses used in Cogl such as the SGI Free Software License B, version 2.0 and the 3-clause BSD license. This patch was not simply cherry-picked from master; but the same methodology was used to check the source files.
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* 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.
*
*
*/
#ifndef __COGL_OBJECT_H
#define __COGL_OBJECT_H
#include <cogl/cogl-types.h>
#ifdef COGL_HAS_GTYPE_SUPPORT
#include <glib-object.h>
#endif
COGL_BEGIN_DECLS
typedef struct _CoglObject CoglObject;
#define COGL_OBJECT(X) ((CoglObject *)X)
/**
* CoglObject:
*
* Ref Func: cogl_object_ref
* Unref Func: cogl_object_unref
* Set Value Func: cogl_object_value_set_object
* Get Value Func: cogl_object_value_get_object
*/
#ifdef COGL_HAS_GTYPE_SUPPORT
/**
* cogl_object_get_gtype:
*
* Returns: a #GType that can be used with the GLib type system.
*/
GType cogl_object_get_gtype (void);
#endif
/**
* cogl_object_ref: (skip)
* @object: a #CoglObject
*
* Increases the reference count of @object by 1
*
* Returns: the @object, with its reference count increased
*/
void *
cogl_object_ref (void *object);
/**
* cogl_object_unref: (skip)
* @object: a #CoglObject
*
* Drecreases the reference count of @object by 1; if the reference
* count reaches 0, the resources allocated by @object will be freed
*/
void
cogl_object_unref (void *object);
/**
* CoglUserDataKey:
* @unused: ignored.
*
* A #CoglUserDataKey is used to declare a key for attaching data to a
* #CoglObject using cogl_object_set_user_data. The typedef only exists as a
* formality to make code self documenting since only the unique address of a
* #CoglUserDataKey is used.
*
* Typically you would declare a static #CoglUserDataKey and set private data
* on an object something like this:
*
* |[
* static CoglUserDataKey path_private_key;
*
* static void
* destroy_path_private_cb (void *data)
* {
* g_free (data);
* }
*
* static void
* my_path_set_data (CoglPath *path, void *data)
* {
* cogl_object_set_user_data (COGL_OBJECT (path),
* &private_key,
* data,
* destroy_path_private_cb);
* }
* ]|
*
* Since: 1.4
*/
typedef struct {
int unused;
} CoglUserDataKey;
/**
* CoglUserDataDestroyCallback:
* @user_data: The data whos association with a #CoglObject has been
* destoyed.
*
* When associating private data with a #CoglObject a callback can be
* given which will be called either if the object is destroyed or if
* cogl_object_set_user_data() is called with NULL user_data for the
* same key.
*
* Since: 1.4
*/
#ifdef COGL_HAS_GTYPE_SUPPORT
typedef GDestroyNotify CoglUserDataDestroyCallback;
#else
typedef void (*CoglUserDataDestroyCallback) (void *user_data);
#endif
/**
* CoglDebugObjectTypeInfo:
* @name: A human readable name for the type.
* @instance_count: The number of objects of this type that are
* currently in use
*
* This struct is used to pass information to the callback when
* cogl_debug_object_foreach_type() is called.
*
* Since: 1.8
* Stability: unstable
*/
typedef struct {
const char *name;
unsigned long instance_count;
} CoglDebugObjectTypeInfo;
/**
* CoglDebugObjectForeachTypeCallback:
* @info: A pointer to a struct containing information about the type.
*
* A callback function to use for cogl_debug_object_foreach_type().
*
* Since: 1.8
* Stability: unstable
*/
typedef void
(* CoglDebugObjectForeachTypeCallback) (const CoglDebugObjectTypeInfo *info,
void *user_data);
/**
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* cogl_object_set_user_data: (skip)
* @object: The object to associate private data with
* @key: The address of a #CoglUserDataKey which provides a unique value
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* with which to index the private data.
* @user_data: The data to associate with the given object,
* or %NULL to remove a previous association.
* @destroy: A #CoglUserDataDestroyCallback to call if the object is
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* destroyed or if the association is removed by later setting
* %NULL data for the same key.
*
* Associates some private @user_data with a given #CoglObject. To
* later remove the association call cogl_object_set_user_data() with
* the same @key but NULL for the @user_data.
*
* Since: 1.4
*/
void
cogl_object_set_user_data (CoglObject *object,
CoglUserDataKey *key,
void *user_data,
CoglUserDataDestroyCallback destroy);
/**
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* cogl_object_get_user_data: (skip)
* @object: The object with associated private data to query
* @key: The address of a #CoglUserDataKey which provides a unique value
* with which to index the private data.
*
* Finds the user data previously associated with @object using
* the given @key. If no user data has been associated with @object
* for the given @key this function returns NULL.
*
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* Returns: (transfer none): The user data previously associated
* with @object using the given @key; or %NULL if no associated
* data is found.
*
* Since: 1.4
*/
void *
cogl_object_get_user_data (CoglObject *object,
CoglUserDataKey *key);
#ifdef COGL_ENABLE_EXPERIMENTAL_API
/**
* cogl_debug_object_foreach_type:
* @func: (scope call): A callback function for each type
* @user_data: (closure): A pointer to pass to @func
*
* Invokes @func once for each type of object that Cogl uses and
* passes a count of the number of objects for that type. This is
* intended to be used solely for debugging purposes to track down
* issues with objects leaking.
*
* Since: 1.8
* Stability: unstable
*/
void
cogl_debug_object_foreach_type (CoglDebugObjectForeachTypeCallback func,
void *user_data);
/**
* cogl_debug_object_print_instances:
*
* Prints a list of all the object types that Cogl uses along with the
* number of objects of that type that are currently in use. This is
* intended to be used solely for debugging purposes to track down
* issues with objects leaking.
*
* Since: 1.8
* Stability: unstable
*/
void
cogl_debug_object_print_instances (void);
#endif /* COGL_ENABLE_EXPERIMENTAL_API */
COGL_END_DECLS
#endif /* __COGL_OBJECT_H */