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https://github.com/brl/mutter.git
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3a4a858ce3
This macro was introduced so as to be able to be built without GLib. However, this feature was long ago removed, and in Mutter we depend on it anyway, so let's get rid of it in favor of more consistency.
251 lines
7.2 KiB
C
251 lines
7.2 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) 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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#ifndef __COGL_OBJECT_H
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#define __COGL_OBJECT_H
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#include <cogl/cogl-types.h>
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#include <glib-object.h>
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G_BEGIN_DECLS
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typedef struct _CoglObject CoglObject;
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#define COGL_OBJECT(X) ((CoglObject *)X)
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/**
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* CoglObject: (ref-func cogl_object_ref) (unref-func cogl_object_unref)
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* (set-value-func cogl_object_value_set_object)
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* (get-value-func cogl_object_value_get_object)
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*/
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/**
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* cogl_object_get_gtype:
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*
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* Returns: a #GType that can be used with the GLib type system.
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*/
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GType cogl_object_get_gtype (void);
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/**
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* cogl_object_ref: (skip)
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* @object: a #CoglObject
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*
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* Increases the reference count of @object by 1
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*
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* Returns: the @object, with its reference count increased
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*/
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void *
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cogl_object_ref (void *object);
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/**
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* cogl_object_unref: (skip)
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* @object: a #CoglObject
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*
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* Drecreases the reference count of @object by 1; if the reference
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* count reaches 0, the resources allocated by @object will be freed
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*/
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void
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cogl_object_unref (void *object);
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/**
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* cogl_clear_object: (skip)
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* @object_ptr: a pointer to a #CoglObject reference
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*
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* Clears a reference to a #CoglObject.
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*
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* @object_ptr must not be %NULL.
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*
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* If the reference is %NULL then this function does nothing.
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* Otherwise, the reference count of the object is decreased using
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* cogl_object_unref() and the pointer is set to %NULL.
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*/
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#define cogl_clear_object(object_ptr) g_clear_pointer ((object_ptr), cogl_object_unref)
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/**
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* CoglUserDataKey:
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* @unused: ignored.
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*
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* A #CoglUserDataKey is used to declare a key for attaching data to a
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* #CoglObject using cogl_object_set_user_data. The typedef only exists as a
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* formality to make code self documenting since only the unique address of a
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* #CoglUserDataKey is used.
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*
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* Typically you would declare a static #CoglUserDataKey and set private data
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* on an object something like this:
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*
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* |[
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* static CoglUserDataKey path_private_key;
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*
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* static void
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* destroy_path_private_cb (void *data)
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* {
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* g_free (data);
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* }
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*
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* static void
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* my_path_set_data (CoglPath *path, void *data)
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* {
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* cogl_object_set_user_data (COGL_OBJECT (path),
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* &private_key,
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* data,
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* destroy_path_private_cb);
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* }
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* ]|
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*
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* Since: 1.4
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*/
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typedef struct {
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int unused;
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} CoglUserDataKey;
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/**
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* CoglUserDataDestroyCallback:
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* @user_data: The data whos association with a #CoglObject has been
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* destoyed.
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*
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* When associating private data with a #CoglObject a callback can be
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* given which will be called either if the object is destroyed or if
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* cogl_object_set_user_data() is called with NULL user_data for the
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* same key.
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*
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* Since: 1.4
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*/
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typedef GDestroyNotify CoglUserDataDestroyCallback;
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/**
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* CoglDebugObjectTypeInfo:
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* @name: A human readable name for the type.
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* @instance_count: The number of objects of this type that are
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* currently in use
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*
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* This struct is used to pass information to the callback when
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* cogl_debug_object_foreach_type() is called.
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*
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* Since: 1.8
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* Stability: unstable
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*/
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typedef struct {
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const char *name;
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unsigned long instance_count;
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} CoglDebugObjectTypeInfo;
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/**
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* CoglDebugObjectForeachTypeCallback:
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* @info: A pointer to a struct containing information about the type.
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*
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* A callback function to use for cogl_debug_object_foreach_type().
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*
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* Since: 1.8
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* Stability: unstable
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*/
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typedef void
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(* CoglDebugObjectForeachTypeCallback) (const CoglDebugObjectTypeInfo *info,
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void *user_data);
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/**
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* cogl_object_set_user_data: (skip)
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* @object: The object to associate private data with
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* @key: The address of a #CoglUserDataKey which provides a unique value
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* with which to index the private data.
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* @user_data: The data to associate with the given object,
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* or %NULL to remove a previous association.
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* @destroy: A #CoglUserDataDestroyCallback to call if the object is
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* destroyed or if the association is removed by later setting
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* %NULL data for the same key.
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*
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* Associates some private @user_data with a given #CoglObject. To
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* later remove the association call cogl_object_set_user_data() with
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* the same @key but NULL for the @user_data.
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*
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* Since: 1.4
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*/
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void
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cogl_object_set_user_data (CoglObject *object,
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CoglUserDataKey *key,
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void *user_data,
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CoglUserDataDestroyCallback destroy);
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/**
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* cogl_object_get_user_data: (skip)
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* @object: The object with associated private data to query
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* @key: The address of a #CoglUserDataKey which provides a unique value
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* with which to index the private data.
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*
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* Finds the user data previously associated with @object using
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* the given @key. If no user data has been associated with @object
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* for the given @key this function returns NULL.
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*
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* Returns: (transfer none): The user data previously associated
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* with @object using the given @key; or %NULL if no associated
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* data is found.
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*
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* Since: 1.4
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*/
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void *
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cogl_object_get_user_data (CoglObject *object,
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CoglUserDataKey *key);
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/**
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* cogl_debug_object_foreach_type:
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* @func: (scope call): A callback function for each type
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* @user_data: (closure): A pointer to pass to @func
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*
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* Invokes @func once for each type of object that Cogl uses and
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* passes a count of the number of objects for that type. This is
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* intended to be used solely for debugging purposes to track down
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* issues with objects leaking.
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*
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* Since: 1.8
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* Stability: unstable
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*/
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void
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cogl_debug_object_foreach_type (CoglDebugObjectForeachTypeCallback func,
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void *user_data);
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/**
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* cogl_debug_object_print_instances:
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*
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* Prints a list of all the object types that Cogl uses along with the
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* number of objects of that type that are currently in use. This is
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* intended to be used solely for debugging purposes to track down
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* issues with objects leaking.
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*
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* Since: 1.8
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* Stability: unstable
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*/
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void
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cogl_debug_object_print_instances (void);
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G_END_DECLS
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#endif /* __COGL_OBJECT_H */
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