gtk2/gtk/gtkobject.h
Owen Taylor e4be2240b7 Rename the GTK_DESTROYED flag to GTK_IN_DESTRUCTION, remove the
Sun Nov 18 19:47:29 2001  Owen Taylor  <otaylor@redhat.com>

	* gtk/gtkobject.h docs/Changes-2.0.txt: Rename the
	GTK_DESTROYED flag to GTK_IN_DESTRUCTION, remove the
	GTK_OBJECT_DESTROYED() check macro.

	* gtk/gtkbindings.c (gtk_bindings_activate): Remove
	instances of GTK_OBJECT_DESTROYED() that weren't
	needed any more.

	* gtk/gtkdialog.c: Exchange use of GTK_OBJECT_DESTROYED
	for a connection to ::destroy.
2001-11-19 01:08:51 +00:00

233 lines
8.3 KiB
C

/* GTK - The GIMP Toolkit
* Copyright (C) 1995-1997 Peter Mattis, Spencer Kimball and Josh MacDonald
*
* 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.
*/
/*
* Modified by the GTK+ Team and others 1997-2000. See the AUTHORS
* file for a list of people on the GTK+ Team. See the ChangeLog
* files for a list of changes. These files are distributed with
* GTK+ at ftp://ftp.gtk.org/pub/gtk/.
*/
#ifndef __GTK_OBJECT_H__
#define __GTK_OBJECT_H__
#include <gtk/gtkenums.h>
#include <gtk/gtktypeutils.h>
#include <gtk/gtkdebug.h>
G_BEGIN_DECLS
/* macros for casting a pointer to a GtkObject or GtkObjectClass pointer,
* and to test whether `object' and `klass' are of type GTK_TYPE_OBJECT.
* these are the standard macros for all GtkObject-derived classes.
*/
#define GTK_TYPE_OBJECT (gtk_object_get_type ())
#define GTK_OBJECT(object) (GTK_CHECK_CAST ((object), GTK_TYPE_OBJECT, GtkObject))
#define GTK_OBJECT_CLASS(klass) (GTK_CHECK_CLASS_CAST ((klass), GTK_TYPE_OBJECT, GtkObjectClass))
#define GTK_IS_OBJECT(object) (GTK_CHECK_TYPE ((object), GTK_TYPE_OBJECT))
#define GTK_IS_OBJECT_CLASS(klass) (GTK_CHECK_CLASS_TYPE ((klass), GTK_TYPE_OBJECT))
#define GTK_OBJECT_GET_CLASS(object) (GTK_CHECK_GET_CLASS ((object), GTK_TYPE_OBJECT, GtkObjectClass))
/* Macros for extracting various fields from GtkObject and GtkObjectClass.
*/
#define GTK_OBJECT_TYPE(object) (G_TYPE_FROM_INSTANCE (object))
#define GTK_OBJECT_TYPE_NAME(object) (g_type_name (GTK_OBJECT_TYPE (object)))
/* GtkObject only uses the first 4 bits of the flags field.
* Derived objects may use the remaining bits. Though this
* is a kinda nasty break up, it does make the size of
* derived objects smaller.
*/
typedef enum
{
GTK_IN_DESTRUCTION = 1 << 0, /* Used internally during dispose */
GTK_FLOATING = 1 << 1,
GTK_RESERVED_1 = 1 << 2,
GTK_RESERVED_2 = 1 << 3
} GtkObjectFlags;
/* Macros for extracting the object_flags from GtkObject.
*/
#define GTK_OBJECT_FLAGS(obj) (GTK_OBJECT (obj)->flags)
#define GTK_OBJECT_FLOATING(obj) ((GTK_OBJECT_FLAGS (obj) & GTK_FLOATING) != 0)
#define GTK_OBJECT_CONNECTED(obj) ((GTK_OBJECT_FLAGS (obj) & GTK_CONNECTED) != 0)
/* Macros for setting and clearing bits in the object_flags field of GtkObject.
*/
#define GTK_OBJECT_SET_FLAGS(obj,flag) G_STMT_START{ (GTK_OBJECT_FLAGS (obj) |= (flag)); }G_STMT_END
#define GTK_OBJECT_UNSET_FLAGS(obj,flag) G_STMT_START{ (GTK_OBJECT_FLAGS (obj) &= ~(flag)); }G_STMT_END
typedef struct _GtkObjectClass GtkObjectClass;
/* The GtkObject structure is the base of the Gtk+ objects hierarchy,
* it ``inherits'' from the GtkTypeObject by mirroring its fields,
* which must always be kept in sync completely. The GtkObject defines
* the few basic items that all derived classes contain.
*/
struct _GtkObject
{
GObject parent_instance;
/* 32 bits of flags. GtkObject only uses 4 of these bits and
* GtkWidget uses the rest. This is done because structs are
* aligned on 4 or 8 byte boundaries. If a new bitfield were
* used in GtkWidget much space would be wasted.
*/
guint32 flags;
};
/* The GtkObjectClass is the base of the Gtk+ objects classes hierarchy,
* it ``inherits'' from the GtkTypeClass by mirroring its fields, which
* must always be kept in sync completely. The GtkObjectClass defines
* the basic necessities for the object inheritance mechanism to work.
*/
struct _GtkObjectClass
{
GObjectClass parent_class;
/* Non overridable class methods to set and get per class arguments */
void (*set_arg) (GtkObject *object,
GtkArg *arg,
guint arg_id);
void (*get_arg) (GtkObject *object,
GtkArg *arg,
guint arg_id);
/* The function that will end an objects life time. In one way ore
* another all three of them are defined for all objects. If an
* object class overrides one of the methods in order to perform class
* specific destruction then it must still invoke its superclass'
* implementation of the method after it is finished with its
* own cleanup. (See the destroy function for GtkWidget for
* an example of how to do this).
*/
void (*destroy) (GtkObject *object);
};
/* Application-level methods */
GtkType gtk_object_get_type (void) G_GNUC_CONST;
GtkObject* gtk_object_new (GtkType type,
const gchar *first_property_name,
...);
void gtk_object_sink (GtkObject *object);
void gtk_object_destroy (GtkObject *object);
/****************************************************************/
#ifndef GTK_DISABLE_DEPRECATED
GtkObject* gtk_object_ref (GtkObject *object);
void gtk_object_unref (GtkObject *object);
void gtk_object_weakref (GtkObject *object,
GtkDestroyNotify notify,
gpointer data);
void gtk_object_weakunref (GtkObject *object,
GtkDestroyNotify notify,
gpointer data);
/* Set 'data' to the "object_data" field of the object. The
* data is indexed by the "key". If there is already data
* associated with "key" then the new data will replace it.
* If 'data' is NULL then this call is equivalent to
* 'gtk_object_remove_data'.
* The gtk_object_set_data_full variant acts just the same,
* but takes an additional argument which is a function to
* be called when the data is removed.
* `gtk_object_remove_data' is equivalent to the above,
* where 'data' is NULL
* `gtk_object_get_data' gets the data associated with "key".
*/
void gtk_object_set_data (GtkObject *object,
const gchar *key,
gpointer data);
void gtk_object_set_data_full (GtkObject *object,
const gchar *key,
gpointer data,
GtkDestroyNotify destroy);
void gtk_object_remove_data (GtkObject *object,
const gchar *key);
gpointer gtk_object_get_data (GtkObject *object,
const gchar *key);
void gtk_object_remove_no_notify (GtkObject *object,
const gchar *key);
/* Set/get the "user_data" object data field of "object". It should
* be noted that these functions are no different than calling
* `gtk_object_set_data'/`gtk_object_get_data' with a key of "user_data".
* They are merely provided as a convenience.
*/
void gtk_object_set_user_data (GtkObject *object,
gpointer data);
gpointer gtk_object_get_user_data (GtkObject *object);
/* Object-level methods */
/* Object data method variants that operate on key ids. */
void gtk_object_set_data_by_id (GtkObject *object,
GQuark data_id,
gpointer data);
void gtk_object_set_data_by_id_full (GtkObject *object,
GQuark data_id,
gpointer data,
GtkDestroyNotify destroy);
gpointer gtk_object_get_data_by_id (GtkObject *object,
GQuark data_id);
void gtk_object_remove_data_by_id (GtkObject *object,
GQuark data_id);
void gtk_object_remove_no_notify_by_id (GtkObject *object,
GQuark key_id);
#define gtk_object_data_try_key g_quark_try_string
#define gtk_object_data_force_id g_quark_from_string
/* GtkArg flag bits for gtk_object_add_arg_type
*/
typedef enum
{
GTK_ARG_READABLE = G_PARAM_READABLE,
GTK_ARG_WRITABLE = G_PARAM_WRITABLE,
GTK_ARG_CONSTRUCT = G_PARAM_CONSTRUCT,
GTK_ARG_CONSTRUCT_ONLY = G_PARAM_CONSTRUCT_ONLY,
GTK_ARG_CHILD_ARG = 1 << 4
} GtkArgFlags;
#define GTK_ARG_READWRITE (GTK_ARG_READABLE | GTK_ARG_WRITABLE)
void gtk_object_get (GtkObject *object,
const gchar *first_property_name,
...);
void gtk_object_set (GtkObject *object,
const gchar *first_property_name,
...);
void gtk_object_add_arg_type (const gchar *arg_name,
GtkType arg_type,
guint arg_flags,
guint arg_id);
#endif /* GTK_DISABLE_DEPRECATED */
G_END_DECLS
#endif /* __GTK_OBJECT_H__ */