* 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 Library General Public
+ * 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
- * Library General Public License for more details.
+ * Lesser General Public License for more details.
*
- * You should have received a copy of the GNU Library General Public
+ * 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/.
+ */
+
+#if !defined (__GTK_H_INSIDE__) && !defined (GTK_COMPILATION)
+#error "Only <gtk/gtk.h> can be included directly."
+#endif
+
#ifndef __GTK_OBJECT_H__
#define __GTK_OBJECT_H__
-#include <gtk/gtkarg.h>
+#include <gdkconfig.h>
#include <gtk/gtkenums.h>
#include <gtk/gtktypeutils.h>
#include <gtk/gtkdebug.h>
-#ifdef __cplusplus
-extern "C" {
-#pragma }
-#endif /* __cplusplus */
-
-
-
-#ifdef offsetof
-#define GTK_STRUCT_OFFSET(struct, field) ((gint) offsetof (struct, field))
-#else /* !offsetof */
-#define GTK_STRUCT_OFFSET(struct, field) ((gint) ((gchar*) &((struct*) 0)->field))
-#endif /* !offsetof */
-
-
-/* The debugging versions of the casting macros make sure the cast is "ok"
- * before proceeding, but they are definately slower than their less
- * careful counterparts as they involve no less than 3 function calls.
- */
-#ifdef GTK_NO_CHECK_CASTS
-
-#define GTK_CHECK_CAST(obj,cast_type,cast) ((cast*) (obj))
-#define GTK_CHECK_CLASS_CAST(klass,cast_type,cast) ((cast*) (klass))
-
-#else /* !GTK_NO_CHECK_CASTS */
-
-#define GTK_CHECK_CAST(obj,cast_type,cast) \
- ((cast*) gtk_object_check_cast ((GtkObject*) (obj), (cast_type)))
-
-#define GTK_CHECK_CLASS_CAST(klass,cast_type,cast) \
- ((cast*) gtk_object_check_class_cast ((GtkObjectClass*) (klass), (cast_type)))
-
-#endif /* GTK_NO_CHECK_CASTS */
-
-
-/* Determines whether `obj' and `klass' are a type of `otype'.
- */
-#define GTK_CHECK_TYPE(obj,otype) ( \
- gtk_type_is_a (((GtkObject*) (obj))->klass->type, (otype)) \
-)
-#define GTK_CHECK_CLASS_TYPE(klass,otype) ( \
- gtk_type_is_a (((GtkObjectClass*) (klass))->type, (otype)) \
-)
-
-/* Macro for casting a pointer to a GtkObject or GtkObjectClass pointer.
- * The second portion of the ?: statments are just in place to offer
- * descriptive warning message.
- */
-#define GTK_OBJECT(object) ( \
- GTK_IS_OBJECT (object) ? \
- (GtkObject*) (object) : \
- (GtkObject*) gtk_object_check_cast ((GtkObject*) (object), GTK_TYPE_OBJECT) \
-)
-#define GTK_OBJECT_CLASS(klass) ( \
- GTK_IS_OBJECT_CLASS (klass) ? \
- (GtkObjectClass*) (klass) : \
- (GtkObjectClass*) gtk_object_check_class_cast ((GtkObjectClass*) (klass), GTK_TYPE_OBJECT) \
-)
+G_BEGIN_DECLS
-/* Macro for testing whether `object' and `klass' are of type GTK_TYPE_OBJECT.
+/* 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_IS_OBJECT(object) ( \
- (object) != NULL && \
- GTK_IS_OBJECT_CLASS (((GtkObject*) (object))->klass) \
-)
-#define GTK_IS_OBJECT_CLASS(klass) ( \
- (klass) != NULL && \
- GTK_FUNDAMENTAL_TYPE (((GtkObjectClass*) (klass))->type) == GTK_TYPE_OBJECT \
-)
-
-/* Macros for extracting various fields from GtkObject and GtkObjectClass.
- */
-#define GTK_OBJECT_TYPE(obj) (GTK_OBJECT (obj)->klass->type)
-#define GTK_OBJECT_SIGNALS(obj) (GTK_OBJECT (obj)->klass->signals)
-#define GTK_OBJECT_NSIGNALS(obj) (GTK_OBJECT (obj)->klass->nsignals)
+#define GTK_TYPE_OBJECT (gtk_object_get_type ())
+#define GTK_OBJECT(object) (G_TYPE_CHECK_INSTANCE_CAST ((object), GTK_TYPE_OBJECT, GtkObject))
+#define GTK_OBJECT_CLASS(klass) (G_TYPE_CHECK_CLASS_CAST ((klass), GTK_TYPE_OBJECT, GtkObjectClass))
+#define GTK_IS_OBJECT(object) (G_TYPE_CHECK_INSTANCE_TYPE ((object), GTK_TYPE_OBJECT))
+#define GTK_IS_OBJECT_CLASS(klass) (G_TYPE_CHECK_CLASS_TYPE ((klass), GTK_TYPE_OBJECT))
+#define GTK_OBJECT_GET_CLASS(object) (G_TYPE_INSTANCE_GET_CLASS ((object), GTK_TYPE_OBJECT, GtkObjectClass))
+#if !defined (GTK_DISABLE_DEPRECATED) || defined (GTK_COMPILATION)
/* 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.
*/
+/**
+ * GtkObjectFlags:
+ * @GTK_IN_DESTRUCTION: the object is currently being destroyed. This is used
+ * internally by GTK+ to prevent reinvokations during destruction.
+ * @GTK_RESERVED_1: reserved for future use
+ * @GTK_RESERVED_2: reserved for future use
+ *
+ * Tells about the state of the object.
+ *
+ * Deprecated: 2.22: Do not re-use #GtkObject flags but use your own variable to
+ * store flags.
+ */
typedef enum
{
- GTK_DESTROYED = 1 << 0,
- GTK_FLOATING = 1 << 1,
- GTK_CONNECTED = 1 << 2,
- GTK_RESERVED_2 = 1 << 3,
- GTK_OBJECT_FLAG_LAST = GTK_RESERVED_2
+ GTK_IN_DESTRUCTION = 1 << 0, /* Used internally during dispose */
+ GTK_RESERVED_1 = 1 << 2,
+ GTK_RESERVED_2 = 1 << 3
} GtkObjectFlags;
-/* Macros for extracting the object_flags from GtkObject.
+/**
+ * GTK_OBJECT_FLAGS:
+ * @obj: the object whose flags are returned.
+ *
+ * Gets the #GtkObjectFlags for an object without directly
+ * accessing its members.
+ *
+ * Deprecated: 2.22: Do not re-use #GtkObject flags but use your own variable to
+ * store flags.
*/
#define GTK_OBJECT_FLAGS(obj) (GTK_OBJECT (obj)->flags)
-#define GTK_OBJECT_DESTROYED(obj) (GTK_OBJECT_FLAGS (obj) & GTK_DESTROYED)
-#define GTK_OBJECT_FLOATING(obj) (GTK_OBJECT_FLAGS (obj) & GTK_FLOATING)
-#define GTK_OBJECT_CONNECTED(obj) (GTK_OBJECT_FLAGS (obj) & GTK_CONNECTED)
/* 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
-
-/* GtkArg flag bits for gtk_object_add_arg_type
- */
-typedef enum
-{
- GTK_ARG_READABLE = 1 << 0,
- GTK_ARG_WRITABLE = 1 << 1,
- GTK_ARG_CONSTRUCT = 1 << 2,
- GTK_ARG_CHILD_ARG = 1 << 3,
- GTK_ARG_MASK = 0x0f,
-
- /* aliases
- */
- GTK_ARG_READWRITE = GTK_ARG_READABLE | GTK_ARG_WRITABLE
-} GtkArgFlags;
+#endif
typedef struct _GtkObjectClass GtkObjectClass;
-/* GtkObject is the base of the object hierarchy. It defines
- * the few basic items that all derived classes contain.
- */
struct _GtkObject
{
- /* A pointer to the objects class. This will actually point to
- * the derived objects class struct (which will be derived from
- * GtkObjectClass).
- */
- GtkObjectClass *klass;
-
+ GInitiallyUnowned 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;
-
- /* reference count.
- * refer to the file REFCOUNTING on this issue.
- */
- guint ref_count;
-
- /* The list of signal handlers and other data
- * fields for this object.
- */
- gpointer object_data;
+ guint32 GSEAL (flags);
};
-/* GtkObjectClass is the base of the class hierarchy. It defines
- * the basic necessities for the class mechanism to work. Namely,
- * the "type", "signals" and "nsignals" fields.
- */
struct _GtkObjectClass
{
- /* The type identifier for the objects class. There is
- * one unique identifier per class.
- */
- GtkType type;
-
- /* The signals this object class handles. "signals" is an
- * array of signal ID's.
- */
- guint *signals;
-
- /* The number of signals listed in "signals".
- */
- guint nsignals;
-
- /* The number of arguments per class.
- */
- guint n_args;
-
- /* 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 functions 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
+ GInitiallyUnownedClass parent_class;
+
+ /* Default signal handler for the ::destroy signal, which is
+ * invoked to request that references to the widget be dropped.
+ * If an object class overrides destroy() 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).
+ * own cleanup. (See gtk_widget_real_destroy() for an example of
+ * how to do this).
*/
- void (* shutdown) (GtkObject *object);
- void (* destroy) (GtkObject *object);
-
- void (* finalize) (GtkObject *object);
+ void (*destroy) (GtkObject *object);
};
-
-/* For the purpose of user signals we need the signal function
- * and signal marshaller signatures already in this place.
- */
-#define GTK_SIGNAL_FUNC(f) ((GtkSignalFunc) f)
-
-typedef void (*GtkSignalFunc) (void);
-typedef void (*GtkSignalMarshaller) (GtkObject *object,
- GtkSignalFunc func,
- gpointer func_data,
- GtkArg *args);
-
-
-
/* Application-level methods */
-GtkType gtk_object_get_type (void);
+GType gtk_object_get_type (void) G_GNUC_CONST;
-/* Append a user defined signal without default handler to a class. */
-guint gtk_object_class_user_signal_new (GtkObjectClass *klass,
- const gchar *name,
- GtkSignalRunType signal_flags,
- GtkSignalMarshaller marshaller,
- GtkType return_val,
- guint nparams,
- ...);
-guint gtk_object_class_user_signal_newv (GtkObjectClass *klass,
- const gchar *name,
- GtkSignalRunType signal_flags,
- GtkSignalMarshaller marshaller,
- GtkType return_val,
- guint nparams,
- GtkType *params);
-GtkObject* gtk_object_new (GtkType type,
- ...);
-GtkObject* gtk_object_newv (GtkType object_type,
- guint n_args,
- GtkArg *args);
-void gtk_object_sink (GtkObject *object);
-void 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);
void gtk_object_destroy (GtkObject *object);
-/* gtk_object_getv() sets an arguments type and value, or just
- * its type to GTK_TYPE_INVALID.
- * if GTK_FUNDAMENTAL_TYPE (arg->type) == GTK_TYPE_STRING, it's
- * the callers response to do a g_free (GTK_VALUE_STRING (arg));
- */
-void gtk_object_getv (GtkObject *object,
- guint n_args,
- GtkArg *args);
-
-/* gtk_object_set() takes a variable argument list of the form:
- * (..., gchar *arg_name, ARG_VALUES, [repeatedly name/value pairs,] NULL)
- * where ARG_VALUES type depend on the argument and can consist of
- * more than one c-function argument.
- */
-void gtk_object_set (GtkObject *object,
- ...);
-void gtk_object_setv (GtkObject *object,
- guint n_args,
- GtkArg *args);
-
-/* Allocate a GtkArg array of size nargs that hold the
- * names and types of the args that can be used with
- * gtk_object_set/gtk_object_get. if (arg_flags!=NULL),
- * (*arg_flags) will be set to point to a newly allocated
- * guint array that holds the flags of the args.
- * It is the callers response to do a
- * g_free (returned_args); g_free (*arg_flags).
- */
-GtkArg* gtk_object_query_args (GtkType class_type,
- guint32 **arg_flags,
- guint *n_args);
-
-/* 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);
-
-/* 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 */
-
-/* Append "signals" to those already defined in "class". */
-void gtk_object_class_add_signals (GtkObjectClass *klass,
- guint *signals,
- guint nsignals);
-/* the `arg_name' argument needs to be a const static string */
-void gtk_object_add_arg_type (const gchar *arg_name,
- GtkType arg_type,
- guint arg_flags,
- guint arg_id);
-
-/* The next two functions are provided to check an object/class pointer
- * for its validity. Appropriate warning messages will be put out if
- * the object or class pointers are invalid.
- */
-GtkObject* gtk_object_check_cast (GtkObject *obj,
- GtkType cast_type);
-
-GtkObjectClass* gtk_object_check_class_cast (GtkObjectClass *klass,
- GtkType cast_type);
-
-/* 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);
-#define gtk_object_data_try_key g_quark_try_string
-#define gtk_object_data_force_id g_quark_from_string
-
-
-/* Non-public methods */
-
-void gtk_object_arg_set (GtkObject *object,
- GtkArg *arg,
- GtkArgInfo *info);
-void gtk_object_arg_get (GtkObject *object,
- GtkArg *arg,
- GtkArgInfo *info);
-gchar* gtk_object_args_collect (GtkType object_type,
- GSList **arg_list_p,
- GSList **info_list_p,
- gpointer var_args_p);
-gchar* gtk_object_arg_get_info (GtkType object_type,
- const gchar *arg_name,
- GtkArgInfo **info_p);
-void gtk_trace_referencing (GtkObject *object,
- const gchar *func,
- guint dummy,
- guint line,
- gboolean do_ref);
-#if G_ENABLE_DEBUG
-# define gtk_object_ref(o) G_STMT_START{gtk_trace_referencing((o),G_GNUC_PRETTY_FUNCTION,0,__LINE__,1);}G_STMT_END
-# define gtk_object_unref(o) G_STMT_START{gtk_trace_referencing((o),G_GNUC_PRETTY_FUNCTION,0,__LINE__,0);}G_STMT_END
-#endif /* G_ENABLE_DEBUG */
-
-
-/* Deprecated methods */
-
-/* Use gtk_object_class_user_signal_new() instead */
-guint gtk_object_class_add_user_signal (GtkObjectClass *klass,
- const gchar *name,
- GtkSignalMarshaller marshaller,
- GtkType return_val,
- guint nparams,
- ...);
-
-
-
-
-
-
-#ifdef __cplusplus
-}
-#endif /* __cplusplus */
-
+G_END_DECLS
#endif /* __GTK_OBJECT_H__ */
projects / ~andy / gtk / blobdiff