mirror of
https://gitlab.gnome.org/GNOME/glib.git
synced 2024-12-29 08:56:15 +01:00
2358 lines
90 KiB
C
2358 lines
90 KiB
C
/* GObject - GLib Type, Object, Parameter and Signal Library
|
|
* Copyright (C) 1998-1999, 2000-2001 Tim Janik and Red Hat, Inc.
|
|
*
|
|
* 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 2.1 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, see <http://www.gnu.org/licenses/>.
|
|
*/
|
|
#ifndef __G_TYPE_H__
|
|
#define __G_TYPE_H__
|
|
|
|
#if !defined (__GLIB_GOBJECT_H_INSIDE__) && !defined (GOBJECT_COMPILATION)
|
|
#error "Only <glib-object.h> can be included directly."
|
|
#endif
|
|
|
|
#include <glib.h>
|
|
|
|
G_BEGIN_DECLS
|
|
|
|
/* Basic Type Macros
|
|
*/
|
|
/**
|
|
* G_TYPE_FUNDAMENTAL:
|
|
* @type: A #GType value.
|
|
*
|
|
* The fundamental type which is the ancestor of @type.
|
|
* Fundamental types are types that serve as ultimate bases for the derived types,
|
|
* thus they are the roots of distinct inheritance hierarchies.
|
|
*/
|
|
#define G_TYPE_FUNDAMENTAL(type) (g_type_fundamental (type))
|
|
/**
|
|
* G_TYPE_FUNDAMENTAL_MAX:
|
|
*
|
|
* An integer constant that represents the number of identifiers reserved
|
|
* for types that are assigned at compile-time.
|
|
*/
|
|
#define G_TYPE_FUNDAMENTAL_MAX (255 << G_TYPE_FUNDAMENTAL_SHIFT)
|
|
|
|
/* Constant fundamental types,
|
|
*/
|
|
/**
|
|
* G_TYPE_INVALID:
|
|
*
|
|
* An invalid #GType used as error return value in some functions which return
|
|
* a #GType.
|
|
*/
|
|
#define G_TYPE_INVALID G_TYPE_MAKE_FUNDAMENTAL (0)
|
|
/**
|
|
* G_TYPE_NONE:
|
|
*
|
|
* A fundamental type which is used as a replacement for the C
|
|
* void return type.
|
|
*/
|
|
#define G_TYPE_NONE G_TYPE_MAKE_FUNDAMENTAL (1)
|
|
/**
|
|
* G_TYPE_INTERFACE:
|
|
*
|
|
* The fundamental type from which all interfaces are derived.
|
|
*/
|
|
#define G_TYPE_INTERFACE G_TYPE_MAKE_FUNDAMENTAL (2)
|
|
/**
|
|
* G_TYPE_CHAR:
|
|
*
|
|
* The fundamental type corresponding to #gchar.
|
|
* The type designated by G_TYPE_CHAR is unconditionally an 8-bit signed integer.
|
|
* This may or may not be the same type a the C type "gchar".
|
|
*/
|
|
#define G_TYPE_CHAR G_TYPE_MAKE_FUNDAMENTAL (3)
|
|
/**
|
|
* G_TYPE_UCHAR:
|
|
*
|
|
* The fundamental type corresponding to #guchar.
|
|
*/
|
|
#define G_TYPE_UCHAR G_TYPE_MAKE_FUNDAMENTAL (4)
|
|
/**
|
|
* G_TYPE_BOOLEAN:
|
|
*
|
|
* The fundamental type corresponding to #gboolean.
|
|
*/
|
|
#define G_TYPE_BOOLEAN G_TYPE_MAKE_FUNDAMENTAL (5)
|
|
/**
|
|
* G_TYPE_INT:
|
|
*
|
|
* The fundamental type corresponding to #gint.
|
|
*/
|
|
#define G_TYPE_INT G_TYPE_MAKE_FUNDAMENTAL (6)
|
|
/**
|
|
* G_TYPE_UINT:
|
|
*
|
|
* The fundamental type corresponding to #guint.
|
|
*/
|
|
#define G_TYPE_UINT G_TYPE_MAKE_FUNDAMENTAL (7)
|
|
/**
|
|
* G_TYPE_LONG:
|
|
*
|
|
* The fundamental type corresponding to #glong.
|
|
*/
|
|
#define G_TYPE_LONG G_TYPE_MAKE_FUNDAMENTAL (8)
|
|
/**
|
|
* G_TYPE_ULONG:
|
|
*
|
|
* The fundamental type corresponding to #gulong.
|
|
*/
|
|
#define G_TYPE_ULONG G_TYPE_MAKE_FUNDAMENTAL (9)
|
|
/**
|
|
* G_TYPE_INT64:
|
|
*
|
|
* The fundamental type corresponding to #gint64.
|
|
*/
|
|
#define G_TYPE_INT64 G_TYPE_MAKE_FUNDAMENTAL (10)
|
|
/**
|
|
* G_TYPE_UINT64:
|
|
*
|
|
* The fundamental type corresponding to #guint64.
|
|
*/
|
|
#define G_TYPE_UINT64 G_TYPE_MAKE_FUNDAMENTAL (11)
|
|
/**
|
|
* G_TYPE_ENUM:
|
|
*
|
|
* The fundamental type from which all enumeration types are derived.
|
|
*/
|
|
#define G_TYPE_ENUM G_TYPE_MAKE_FUNDAMENTAL (12)
|
|
/**
|
|
* G_TYPE_FLAGS:
|
|
*
|
|
* The fundamental type from which all flags types are derived.
|
|
*/
|
|
#define G_TYPE_FLAGS G_TYPE_MAKE_FUNDAMENTAL (13)
|
|
/**
|
|
* G_TYPE_FLOAT:
|
|
*
|
|
* The fundamental type corresponding to #gfloat.
|
|
*/
|
|
#define G_TYPE_FLOAT G_TYPE_MAKE_FUNDAMENTAL (14)
|
|
/**
|
|
* G_TYPE_DOUBLE:
|
|
*
|
|
* The fundamental type corresponding to #gdouble.
|
|
*/
|
|
#define G_TYPE_DOUBLE G_TYPE_MAKE_FUNDAMENTAL (15)
|
|
/**
|
|
* G_TYPE_STRING:
|
|
*
|
|
* The fundamental type corresponding to nul-terminated C strings.
|
|
*/
|
|
#define G_TYPE_STRING G_TYPE_MAKE_FUNDAMENTAL (16)
|
|
/**
|
|
* G_TYPE_POINTER:
|
|
*
|
|
* The fundamental type corresponding to #gpointer.
|
|
*/
|
|
#define G_TYPE_POINTER G_TYPE_MAKE_FUNDAMENTAL (17)
|
|
/**
|
|
* G_TYPE_BOXED:
|
|
*
|
|
* The fundamental type from which all boxed types are derived.
|
|
*/
|
|
#define G_TYPE_BOXED G_TYPE_MAKE_FUNDAMENTAL (18)
|
|
/**
|
|
* G_TYPE_PARAM:
|
|
*
|
|
* The fundamental type from which all #GParamSpec types are derived.
|
|
*/
|
|
#define G_TYPE_PARAM G_TYPE_MAKE_FUNDAMENTAL (19)
|
|
/**
|
|
* G_TYPE_OBJECT:
|
|
*
|
|
* The fundamental type for #GObject.
|
|
*/
|
|
#define G_TYPE_OBJECT G_TYPE_MAKE_FUNDAMENTAL (20)
|
|
/**
|
|
* G_TYPE_VARIANT:
|
|
*
|
|
* The fundamental type corresponding to #GVariant.
|
|
*
|
|
* All floating #GVariant instances passed through the #GType system are
|
|
* consumed.
|
|
*
|
|
* Note that callbacks in closures, and signal handlers
|
|
* for signals of return type %G_TYPE_VARIANT, must never return floating
|
|
* variants.
|
|
*
|
|
* Note: GLib 2.24 did include a boxed type with this name. It was replaced
|
|
* with this fundamental type in 2.26.
|
|
*
|
|
* Since: 2.26
|
|
*/
|
|
#define G_TYPE_VARIANT G_TYPE_MAKE_FUNDAMENTAL (21)
|
|
|
|
|
|
/* Reserved fundamental type numbers to create new fundamental
|
|
* type IDs with G_TYPE_MAKE_FUNDAMENTAL().
|
|
*
|
|
* Open an issue on https://gitlab.gnome.org/GNOME/glib/issues/new for
|
|
* reservations.
|
|
*/
|
|
/**
|
|
* G_TYPE_FUNDAMENTAL_SHIFT:
|
|
*
|
|
* Shift value used in converting numbers to type IDs.
|
|
*/
|
|
#define G_TYPE_FUNDAMENTAL_SHIFT (2)
|
|
/**
|
|
* G_TYPE_MAKE_FUNDAMENTAL:
|
|
* @x: the fundamental type number.
|
|
*
|
|
* Get the type ID for the fundamental type number @x.
|
|
* Use g_type_fundamental_next() instead of this macro to create new fundamental
|
|
* types.
|
|
*
|
|
* Returns: the GType
|
|
*/
|
|
#define G_TYPE_MAKE_FUNDAMENTAL(x) ((GType) ((x) << G_TYPE_FUNDAMENTAL_SHIFT))
|
|
/**
|
|
* G_TYPE_RESERVED_GLIB_FIRST:
|
|
*
|
|
* First fundamental type number to create a new fundamental type id with
|
|
* G_TYPE_MAKE_FUNDAMENTAL() reserved for GLib.
|
|
*/
|
|
#define G_TYPE_RESERVED_GLIB_FIRST (22)
|
|
/**
|
|
* G_TYPE_RESERVED_GLIB_LAST:
|
|
*
|
|
* Last fundamental type number reserved for GLib.
|
|
*/
|
|
#define G_TYPE_RESERVED_GLIB_LAST (31)
|
|
/**
|
|
* G_TYPE_RESERVED_BSE_FIRST:
|
|
*
|
|
* First fundamental type number to create a new fundamental type id with
|
|
* G_TYPE_MAKE_FUNDAMENTAL() reserved for BSE.
|
|
*/
|
|
#define G_TYPE_RESERVED_BSE_FIRST (32)
|
|
/**
|
|
* G_TYPE_RESERVED_BSE_LAST:
|
|
*
|
|
* Last fundamental type number reserved for BSE.
|
|
*/
|
|
#define G_TYPE_RESERVED_BSE_LAST (48)
|
|
/**
|
|
* G_TYPE_RESERVED_USER_FIRST:
|
|
*
|
|
* First available fundamental type number to create new fundamental
|
|
* type id with G_TYPE_MAKE_FUNDAMENTAL().
|
|
*/
|
|
#define G_TYPE_RESERVED_USER_FIRST (49)
|
|
|
|
|
|
/* Type Checking Macros
|
|
*/
|
|
/**
|
|
* G_TYPE_IS_FUNDAMENTAL:
|
|
* @type: A #GType value
|
|
*
|
|
* Checks if @type is a fundamental type.
|
|
*
|
|
* Returns: %TRUE on success
|
|
*/
|
|
#define G_TYPE_IS_FUNDAMENTAL(type) ((type) <= G_TYPE_FUNDAMENTAL_MAX)
|
|
/**
|
|
* G_TYPE_IS_DERIVED:
|
|
* @type: A #GType value
|
|
*
|
|
* Checks if @type is derived (or in object-oriented terminology:
|
|
* inherited) from another type (this holds true for all non-fundamental
|
|
* types).
|
|
*
|
|
* Returns: %TRUE on success
|
|
*/
|
|
#define G_TYPE_IS_DERIVED(type) ((type) > G_TYPE_FUNDAMENTAL_MAX)
|
|
/**
|
|
* G_TYPE_IS_INTERFACE:
|
|
* @type: A #GType value
|
|
*
|
|
* Checks if @type is an interface type.
|
|
* An interface type provides a pure API, the implementation
|
|
* of which is provided by another type (which is then said to conform
|
|
* to the interface). GLib interfaces are somewhat analogous to Java
|
|
* interfaces and C++ classes containing only pure virtual functions,
|
|
* with the difference that GType interfaces are not derivable (but see
|
|
* g_type_interface_add_prerequisite() for an alternative).
|
|
*
|
|
* Returns: %TRUE on success
|
|
*/
|
|
#define G_TYPE_IS_INTERFACE(type) (G_TYPE_FUNDAMENTAL (type) == G_TYPE_INTERFACE)
|
|
/**
|
|
* G_TYPE_IS_CLASSED:
|
|
* @type: A #GType value
|
|
*
|
|
* Checks if @type is a classed type.
|
|
*
|
|
* Returns: %TRUE on success
|
|
*/
|
|
#define G_TYPE_IS_CLASSED(type) (g_type_test_flags ((type), G_TYPE_FLAG_CLASSED))
|
|
/**
|
|
* G_TYPE_IS_INSTANTIATABLE:
|
|
* @type: A #GType value
|
|
*
|
|
* Checks if @type can be instantiated. Instantiation is the
|
|
* process of creating an instance (object) of this type.
|
|
*
|
|
* Returns: %TRUE on success
|
|
*/
|
|
#define G_TYPE_IS_INSTANTIATABLE(type) (g_type_test_flags ((type), G_TYPE_FLAG_INSTANTIATABLE))
|
|
/**
|
|
* G_TYPE_IS_DERIVABLE:
|
|
* @type: A #GType value
|
|
*
|
|
* Checks if @type is a derivable type. A derivable type can
|
|
* be used as the base class of a flat (single-level) class hierarchy.
|
|
*
|
|
* Returns: %TRUE on success
|
|
*/
|
|
#define G_TYPE_IS_DERIVABLE(type) (g_type_test_flags ((type), G_TYPE_FLAG_DERIVABLE))
|
|
/**
|
|
* G_TYPE_IS_DEEP_DERIVABLE:
|
|
* @type: A #GType value
|
|
*
|
|
* Checks if @type is a deep derivable type. A deep derivable type
|
|
* can be used as the base class of a deep (multi-level) class hierarchy.
|
|
*
|
|
* Returns: %TRUE on success
|
|
*/
|
|
#define G_TYPE_IS_DEEP_DERIVABLE(type) (g_type_test_flags ((type), G_TYPE_FLAG_DEEP_DERIVABLE))
|
|
/**
|
|
* G_TYPE_IS_ABSTRACT:
|
|
* @type: A #GType value
|
|
*
|
|
* Checks if @type is an abstract type. An abstract type cannot be
|
|
* instantiated and is normally used as an abstract base class for
|
|
* derived classes.
|
|
*
|
|
* Returns: %TRUE on success
|
|
*/
|
|
#define G_TYPE_IS_ABSTRACT(type) (g_type_test_flags ((type), G_TYPE_FLAG_ABSTRACT))
|
|
/**
|
|
* G_TYPE_IS_VALUE_ABSTRACT:
|
|
* @type: A #GType value
|
|
*
|
|
* Checks if @type is an abstract value type. An abstract value type introduces
|
|
* a value table, but can't be used for g_value_init() and is normally used as
|
|
* an abstract base type for derived value types.
|
|
*
|
|
* Returns: %TRUE on success
|
|
*/
|
|
#define G_TYPE_IS_VALUE_ABSTRACT(type) (g_type_test_flags ((type), G_TYPE_FLAG_VALUE_ABSTRACT))
|
|
/**
|
|
* G_TYPE_IS_VALUE_TYPE:
|
|
* @type: A #GType value
|
|
*
|
|
* Checks if @type is a value type and can be used with g_value_init().
|
|
*
|
|
* Returns: %TRUE on success
|
|
*/
|
|
#define G_TYPE_IS_VALUE_TYPE(type) (g_type_check_is_value_type (type))
|
|
/**
|
|
* G_TYPE_HAS_VALUE_TABLE:
|
|
* @type: A #GType value
|
|
*
|
|
* Checks if @type has a #GTypeValueTable.
|
|
*
|
|
* Returns: %TRUE on success
|
|
*/
|
|
#define G_TYPE_HAS_VALUE_TABLE(type) (g_type_value_table_peek (type) != NULL)
|
|
|
|
|
|
/* Typedefs
|
|
*/
|
|
/**
|
|
* GType:
|
|
*
|
|
* A numerical value which represents the unique identifier of a registered
|
|
* type.
|
|
*/
|
|
#if GLIB_SIZEOF_SIZE_T != GLIB_SIZEOF_LONG || !defined __cplusplus
|
|
typedef gsize GType;
|
|
#else /* for historic reasons, C++ links against gulong GTypes */
|
|
typedef gulong GType;
|
|
#endif
|
|
typedef struct _GValue GValue;
|
|
typedef union _GTypeCValue GTypeCValue;
|
|
typedef struct _GTypePlugin GTypePlugin;
|
|
typedef struct _GTypeClass GTypeClass;
|
|
typedef struct _GTypeInterface GTypeInterface;
|
|
typedef struct _GTypeInstance GTypeInstance;
|
|
typedef struct _GTypeInfo GTypeInfo;
|
|
typedef struct _GTypeFundamentalInfo GTypeFundamentalInfo;
|
|
typedef struct _GInterfaceInfo GInterfaceInfo;
|
|
typedef struct _GTypeValueTable GTypeValueTable;
|
|
typedef struct _GTypeQuery GTypeQuery;
|
|
|
|
|
|
/* Basic Type Structures
|
|
*/
|
|
/**
|
|
* GTypeClass:
|
|
*
|
|
* An opaque structure used as the base of all classes.
|
|
*/
|
|
struct _GTypeClass
|
|
{
|
|
/*< private >*/
|
|
GType g_type;
|
|
};
|
|
/**
|
|
* GTypeInstance:
|
|
*
|
|
* An opaque structure used as the base of all type instances.
|
|
*/
|
|
struct _GTypeInstance
|
|
{
|
|
/*< private >*/
|
|
GTypeClass *g_class;
|
|
};
|
|
/**
|
|
* GTypeInterface:
|
|
*
|
|
* An opaque structure used as the base of all interface types.
|
|
*/
|
|
struct _GTypeInterface
|
|
{
|
|
/*< private >*/
|
|
GType g_type; /* iface type */
|
|
GType g_instance_type;
|
|
};
|
|
/**
|
|
* GTypeQuery:
|
|
* @type: the #GType value of the type
|
|
* @type_name: the name of the type
|
|
* @class_size: the size of the class structure
|
|
* @instance_size: the size of the instance structure
|
|
*
|
|
* A structure holding information for a specific type.
|
|
* It is filled in by the g_type_query() function.
|
|
*/
|
|
struct _GTypeQuery
|
|
{
|
|
GType type;
|
|
const gchar *type_name;
|
|
guint class_size;
|
|
guint instance_size;
|
|
};
|
|
|
|
|
|
/* Casts, checks and accessors for structured types
|
|
* usage of these macros is reserved to type implementations only
|
|
*/
|
|
/*< protected >*/
|
|
/**
|
|
* G_TYPE_CHECK_INSTANCE:
|
|
* @instance: Location of a #GTypeInstance structure
|
|
*
|
|
* Checks if @instance is a valid #GTypeInstance structure,
|
|
* otherwise issues a warning and returns %FALSE. %NULL is not a valid
|
|
* #GTypeInstance.
|
|
*
|
|
* This macro should only be used in type implementations.
|
|
*
|
|
* Returns: %TRUE on success
|
|
*/
|
|
#define G_TYPE_CHECK_INSTANCE(instance) (_G_TYPE_CHI ((GTypeInstance*) (instance)))
|
|
/**
|
|
* G_TYPE_CHECK_INSTANCE_CAST:
|
|
* @instance: (nullable): Location of a #GTypeInstance structure
|
|
* @g_type: The type to be returned
|
|
* @c_type: The corresponding C type of @g_type
|
|
*
|
|
* Checks that @instance is an instance of the type identified by @g_type
|
|
* and issues a warning if this is not the case. Returns @instance casted
|
|
* to a pointer to @c_type.
|
|
*
|
|
* No warning will be issued if @instance is %NULL, and %NULL will be returned.
|
|
*
|
|
* This macro should only be used in type implementations.
|
|
*/
|
|
#define G_TYPE_CHECK_INSTANCE_CAST(instance, g_type, c_type) (_G_TYPE_CIC ((instance), (g_type), c_type))
|
|
/**
|
|
* G_TYPE_CHECK_INSTANCE_TYPE:
|
|
* @instance: (nullable): Location of a #GTypeInstance structure.
|
|
* @g_type: The type to be checked
|
|
*
|
|
* Checks if @instance is an instance of the type identified by @g_type. If
|
|
* @instance is %NULL, %FALSE will be returned.
|
|
*
|
|
* This macro should only be used in type implementations.
|
|
*
|
|
* Returns: %TRUE on success
|
|
*/
|
|
#define G_TYPE_CHECK_INSTANCE_TYPE(instance, g_type) (_G_TYPE_CIT ((instance), (g_type)))
|
|
/**
|
|
* G_TYPE_CHECK_INSTANCE_FUNDAMENTAL_TYPE:
|
|
* @instance: (nullable): Location of a #GTypeInstance structure.
|
|
* @g_type: The fundamental type to be checked
|
|
*
|
|
* Checks if @instance is an instance of the fundamental type identified by @g_type.
|
|
* If @instance is %NULL, %FALSE will be returned.
|
|
*
|
|
* This macro should only be used in type implementations.
|
|
*
|
|
* Returns: %TRUE on success
|
|
*/
|
|
#define G_TYPE_CHECK_INSTANCE_FUNDAMENTAL_TYPE(instance, g_type) (_G_TYPE_CIFT ((instance), (g_type)))
|
|
/**
|
|
* G_TYPE_INSTANCE_GET_CLASS:
|
|
* @instance: Location of the #GTypeInstance structure
|
|
* @g_type: The #GType of the class to be returned
|
|
* @c_type: The C type of the class structure
|
|
*
|
|
* Get the class structure of a given @instance, casted
|
|
* to a specified ancestor type @g_type of the instance.
|
|
*
|
|
* Note that while calling a GInstanceInitFunc(), the class pointer
|
|
* gets modified, so it might not always return the expected pointer.
|
|
*
|
|
* This macro should only be used in type implementations.
|
|
*
|
|
* Returns: a pointer to the class structure
|
|
*/
|
|
#define G_TYPE_INSTANCE_GET_CLASS(instance, g_type, c_type) (_G_TYPE_IGC ((instance), (g_type), c_type))
|
|
/**
|
|
* G_TYPE_INSTANCE_GET_INTERFACE:
|
|
* @instance: Location of the #GTypeInstance structure
|
|
* @g_type: The #GType of the interface to be returned
|
|
* @c_type: The C type of the interface structure
|
|
*
|
|
* Get the interface structure for interface @g_type of a given @instance.
|
|
*
|
|
* This macro should only be used in type implementations.
|
|
*
|
|
* Returns: a pointer to the interface structure
|
|
*/
|
|
#define G_TYPE_INSTANCE_GET_INTERFACE(instance, g_type, c_type) (_G_TYPE_IGI ((instance), (g_type), c_type))
|
|
/**
|
|
* G_TYPE_CHECK_CLASS_CAST:
|
|
* @g_class: Location of a #GTypeClass structure
|
|
* @g_type: The type to be returned
|
|
* @c_type: The corresponding C type of class structure of @g_type
|
|
*
|
|
* Checks that @g_class is a class structure of the type identified by @g_type
|
|
* and issues a warning if this is not the case. Returns @g_class casted
|
|
* to a pointer to @c_type. %NULL is not a valid class structure.
|
|
*
|
|
* This macro should only be used in type implementations.
|
|
*/
|
|
#define G_TYPE_CHECK_CLASS_CAST(g_class, g_type, c_type) (_G_TYPE_CCC ((g_class), (g_type), c_type))
|
|
/**
|
|
* G_TYPE_CHECK_CLASS_TYPE:
|
|
* @g_class: (nullable): Location of a #GTypeClass structure
|
|
* @g_type: The type to be checked
|
|
*
|
|
* Checks if @g_class is a class structure of the type identified by
|
|
* @g_type. If @g_class is %NULL, %FALSE will be returned.
|
|
*
|
|
* This macro should only be used in type implementations.
|
|
*
|
|
* Returns: %TRUE on success
|
|
*/
|
|
#define G_TYPE_CHECK_CLASS_TYPE(g_class, g_type) (_G_TYPE_CCT ((g_class), (g_type)))
|
|
/**
|
|
* G_TYPE_CHECK_VALUE:
|
|
* @value: a #GValue
|
|
*
|
|
* Checks if @value has been initialized to hold values
|
|
* of a value type.
|
|
*
|
|
* This macro should only be used in type implementations.
|
|
*
|
|
* Returns: %TRUE on success
|
|
*/
|
|
#define G_TYPE_CHECK_VALUE(value) (_G_TYPE_CHV ((value)))
|
|
/**
|
|
* G_TYPE_CHECK_VALUE_TYPE:
|
|
* @value: a #GValue
|
|
* @g_type: The type to be checked
|
|
*
|
|
* Checks if @value has been initialized to hold values
|
|
* of type @g_type.
|
|
*
|
|
* This macro should only be used in type implementations.
|
|
*
|
|
* Returns: %TRUE on success
|
|
*/
|
|
#define G_TYPE_CHECK_VALUE_TYPE(value, g_type) (_G_TYPE_CVH ((value), (g_type)))
|
|
/**
|
|
* G_TYPE_FROM_INSTANCE:
|
|
* @instance: Location of a valid #GTypeInstance structure
|
|
*
|
|
* Get the type identifier from a given @instance structure.
|
|
*
|
|
* This macro should only be used in type implementations.
|
|
*
|
|
* Returns: the #GType
|
|
*/
|
|
#define G_TYPE_FROM_INSTANCE(instance) (G_TYPE_FROM_CLASS (((GTypeInstance*) (instance))->g_class))
|
|
/**
|
|
* G_TYPE_FROM_CLASS:
|
|
* @g_class: Location of a valid #GTypeClass structure
|
|
*
|
|
* Get the type identifier from a given @class structure.
|
|
*
|
|
* This macro should only be used in type implementations.
|
|
*
|
|
* Returns: the #GType
|
|
*/
|
|
#define G_TYPE_FROM_CLASS(g_class) (((GTypeClass*) (g_class))->g_type)
|
|
/**
|
|
* G_TYPE_FROM_INTERFACE:
|
|
* @g_iface: Location of a valid #GTypeInterface structure
|
|
*
|
|
* Get the type identifier from a given @interface structure.
|
|
*
|
|
* This macro should only be used in type implementations.
|
|
*
|
|
* Returns: the #GType
|
|
*/
|
|
#define G_TYPE_FROM_INTERFACE(g_iface) (((GTypeInterface*) (g_iface))->g_type)
|
|
|
|
/**
|
|
* G_TYPE_INSTANCE_GET_PRIVATE:
|
|
* @instance: the instance of a type deriving from @private_type
|
|
* @g_type: the type identifying which private data to retrieve
|
|
* @c_type: The C type for the private structure
|
|
*
|
|
* Gets the private structure for a particular type.
|
|
* The private structure must have been registered in the
|
|
* class_init function with g_type_class_add_private().
|
|
*
|
|
* This macro should only be used in type implementations.
|
|
*
|
|
* Since: 2.4
|
|
* Deprecated: 2.58: Use %G_ADD_PRIVATE and the generated
|
|
* `your_type_get_instance_private()` function instead
|
|
* Returns: (not nullable): a pointer to the private data structure
|
|
*/
|
|
#define G_TYPE_INSTANCE_GET_PRIVATE(instance, g_type, c_type) ((c_type*) g_type_instance_get_private ((GTypeInstance*) (instance), (g_type))) GLIB_DEPRECATED_MACRO_IN_2_58_FOR(G_ADD_PRIVATE)
|
|
|
|
/**
|
|
* G_TYPE_CLASS_GET_PRIVATE:
|
|
* @klass: the class of a type deriving from @private_type
|
|
* @g_type: the type identifying which private data to retrieve
|
|
* @c_type: The C type for the private structure
|
|
*
|
|
* Gets the private class structure for a particular type.
|
|
* The private structure must have been registered in the
|
|
* get_type() function with g_type_add_class_private().
|
|
*
|
|
* This macro should only be used in type implementations.
|
|
*
|
|
* Since: 2.24
|
|
* Returns: (not nullable): a pointer to the private data structure
|
|
*/
|
|
#define G_TYPE_CLASS_GET_PRIVATE(klass, g_type, c_type) ((c_type*) g_type_class_get_private ((GTypeClass*) (klass), (g_type)))
|
|
|
|
/**
|
|
* GTypeDebugFlags:
|
|
* @G_TYPE_DEBUG_NONE: Print no messages
|
|
* @G_TYPE_DEBUG_OBJECTS: Print messages about object bookkeeping
|
|
* @G_TYPE_DEBUG_SIGNALS: Print messages about signal emissions
|
|
* @G_TYPE_DEBUG_MASK: Mask covering all debug flags
|
|
* @G_TYPE_DEBUG_INSTANCE_COUNT: Keep a count of instances of each type
|
|
*
|
|
* These flags used to be passed to g_type_init_with_debug_flags() which
|
|
* is now deprecated.
|
|
*
|
|
* If you need to enable debugging features, use the GOBJECT_DEBUG
|
|
* environment variable.
|
|
*
|
|
* Deprecated: 2.36: g_type_init() is now done automatically
|
|
*/
|
|
typedef enum /*< skip >*/
|
|
{
|
|
G_TYPE_DEBUG_NONE = 0,
|
|
G_TYPE_DEBUG_OBJECTS = 1 << 0,
|
|
G_TYPE_DEBUG_SIGNALS = 1 << 1,
|
|
G_TYPE_DEBUG_INSTANCE_COUNT = 1 << 2,
|
|
G_TYPE_DEBUG_MASK = 0x07
|
|
} GTypeDebugFlags GLIB_DEPRECATED_TYPE_IN_2_36;
|
|
|
|
|
|
/* --- prototypes --- */
|
|
G_GNUC_BEGIN_IGNORE_DEPRECATIONS
|
|
GLIB_DEPRECATED_IN_2_36
|
|
void g_type_init (void);
|
|
GLIB_DEPRECATED_IN_2_36
|
|
void g_type_init_with_debug_flags (GTypeDebugFlags debug_flags);
|
|
G_GNUC_END_IGNORE_DEPRECATIONS
|
|
|
|
GLIB_AVAILABLE_IN_ALL
|
|
const gchar * g_type_name (GType type);
|
|
GLIB_AVAILABLE_IN_ALL
|
|
GQuark g_type_qname (GType type);
|
|
GLIB_AVAILABLE_IN_ALL
|
|
GType g_type_from_name (const gchar *name);
|
|
GLIB_AVAILABLE_IN_ALL
|
|
GType g_type_parent (GType type);
|
|
GLIB_AVAILABLE_IN_ALL
|
|
guint g_type_depth (GType type);
|
|
GLIB_AVAILABLE_IN_ALL
|
|
GType g_type_next_base (GType leaf_type,
|
|
GType root_type);
|
|
GLIB_AVAILABLE_IN_ALL
|
|
gboolean g_type_is_a (GType type,
|
|
GType is_a_type);
|
|
GLIB_AVAILABLE_IN_ALL
|
|
gpointer g_type_class_ref (GType type);
|
|
GLIB_AVAILABLE_IN_ALL
|
|
gpointer g_type_class_peek (GType type);
|
|
GLIB_AVAILABLE_IN_ALL
|
|
gpointer g_type_class_peek_static (GType type);
|
|
GLIB_AVAILABLE_IN_ALL
|
|
void g_type_class_unref (gpointer g_class);
|
|
GLIB_AVAILABLE_IN_ALL
|
|
gpointer g_type_class_peek_parent (gpointer g_class);
|
|
GLIB_AVAILABLE_IN_ALL
|
|
gpointer g_type_interface_peek (gpointer instance_class,
|
|
GType iface_type);
|
|
GLIB_AVAILABLE_IN_ALL
|
|
gpointer g_type_interface_peek_parent (gpointer g_iface);
|
|
|
|
GLIB_AVAILABLE_IN_ALL
|
|
gpointer g_type_default_interface_ref (GType g_type);
|
|
GLIB_AVAILABLE_IN_ALL
|
|
gpointer g_type_default_interface_peek (GType g_type);
|
|
GLIB_AVAILABLE_IN_ALL
|
|
void g_type_default_interface_unref (gpointer g_iface);
|
|
|
|
/* g_free() the returned arrays */
|
|
GLIB_AVAILABLE_IN_ALL
|
|
GType* g_type_children (GType type,
|
|
guint *n_children);
|
|
GLIB_AVAILABLE_IN_ALL
|
|
GType* g_type_interfaces (GType type,
|
|
guint *n_interfaces);
|
|
|
|
/* per-type _static_ data */
|
|
GLIB_AVAILABLE_IN_ALL
|
|
void g_type_set_qdata (GType type,
|
|
GQuark quark,
|
|
gpointer data);
|
|
GLIB_AVAILABLE_IN_ALL
|
|
gpointer g_type_get_qdata (GType type,
|
|
GQuark quark);
|
|
GLIB_AVAILABLE_IN_ALL
|
|
void g_type_query (GType type,
|
|
GTypeQuery *query);
|
|
|
|
GLIB_AVAILABLE_IN_2_44
|
|
int g_type_get_instance_count (GType type);
|
|
|
|
/* --- type registration --- */
|
|
/**
|
|
* GBaseInitFunc:
|
|
* @g_class: (type GObject.TypeClass): The #GTypeClass structure to initialize
|
|
*
|
|
* A callback function used by the type system to do base initialization
|
|
* of the class structures of derived types. It is called as part of the
|
|
* initialization process of all derived classes and should reallocate
|
|
* or reset all dynamic class members copied over from the parent class.
|
|
* For example, class members (such as strings) that are not sufficiently
|
|
* handled by a plain memory copy of the parent class into the derived class
|
|
* have to be altered. See GClassInitFunc() for a discussion of the class
|
|
* initialization process.
|
|
*/
|
|
typedef void (*GBaseInitFunc) (gpointer g_class);
|
|
/**
|
|
* GBaseFinalizeFunc:
|
|
* @g_class: (type GObject.TypeClass): The #GTypeClass structure to finalize
|
|
*
|
|
* A callback function used by the type system to finalize those portions
|
|
* of a derived types class structure that were setup from the corresponding
|
|
* GBaseInitFunc() function. Class finalization basically works the inverse
|
|
* way in which class initialization is performed.
|
|
* See GClassInitFunc() for a discussion of the class initialization process.
|
|
*/
|
|
typedef void (*GBaseFinalizeFunc) (gpointer g_class);
|
|
/**
|
|
* GClassInitFunc:
|
|
* @g_class: (type GObject.TypeClass): The #GTypeClass structure to initialize.
|
|
* @class_data: The @class_data member supplied via the #GTypeInfo structure.
|
|
*
|
|
* A callback function used by the type system to initialize the class
|
|
* of a specific type. This function should initialize all static class
|
|
* members.
|
|
*
|
|
* The initialization process of a class involves:
|
|
*
|
|
* - Copying common members from the parent class over to the
|
|
* derived class structure.
|
|
* - Zero initialization of the remaining members not copied
|
|
* over from the parent class.
|
|
* - Invocation of the GBaseInitFunc() initializers of all parent
|
|
* types and the class' type.
|
|
* - Invocation of the class' GClassInitFunc() initializer.
|
|
*
|
|
* Since derived classes are partially initialized through a memory copy
|
|
* of the parent class, the general rule is that GBaseInitFunc() and
|
|
* GBaseFinalizeFunc() should take care of necessary reinitialization
|
|
* and release of those class members that were introduced by the type
|
|
* that specified these GBaseInitFunc()/GBaseFinalizeFunc().
|
|
* GClassInitFunc() should only care about initializing static
|
|
* class members, while dynamic class members (such as allocated strings
|
|
* or reference counted resources) are better handled by a GBaseInitFunc()
|
|
* for this type, so proper initialization of the dynamic class members
|
|
* is performed for class initialization of derived types as well.
|
|
*
|
|
* An example may help to correspond the intend of the different class
|
|
* initializers:
|
|
*
|
|
* |[<!-- language="C" -->
|
|
* typedef struct {
|
|
* GObjectClass parent_class;
|
|
* gint static_integer;
|
|
* gchar *dynamic_string;
|
|
* } TypeAClass;
|
|
* static void
|
|
* type_a_base_class_init (TypeAClass *class)
|
|
* {
|
|
* class->dynamic_string = g_strdup ("some string");
|
|
* }
|
|
* static void
|
|
* type_a_base_class_finalize (TypeAClass *class)
|
|
* {
|
|
* g_free (class->dynamic_string);
|
|
* }
|
|
* static void
|
|
* type_a_class_init (TypeAClass *class)
|
|
* {
|
|
* class->static_integer = 42;
|
|
* }
|
|
*
|
|
* typedef struct {
|
|
* TypeAClass parent_class;
|
|
* gfloat static_float;
|
|
* GString *dynamic_gstring;
|
|
* } TypeBClass;
|
|
* static void
|
|
* type_b_base_class_init (TypeBClass *class)
|
|
* {
|
|
* class->dynamic_gstring = g_string_new ("some other string");
|
|
* }
|
|
* static void
|
|
* type_b_base_class_finalize (TypeBClass *class)
|
|
* {
|
|
* g_string_free (class->dynamic_gstring);
|
|
* }
|
|
* static void
|
|
* type_b_class_init (TypeBClass *class)
|
|
* {
|
|
* class->static_float = 3.14159265358979323846;
|
|
* }
|
|
* ]|
|
|
* Initialization of TypeBClass will first cause initialization of
|
|
* TypeAClass (derived classes reference their parent classes, see
|
|
* g_type_class_ref() on this).
|
|
*
|
|
* Initialization of TypeAClass roughly involves zero-initializing its fields,
|
|
* then calling its GBaseInitFunc() type_a_base_class_init() to allocate
|
|
* its dynamic members (dynamic_string), and finally calling its GClassInitFunc()
|
|
* type_a_class_init() to initialize its static members (static_integer).
|
|
* The first step in the initialization process of TypeBClass is then
|
|
* a plain memory copy of the contents of TypeAClass into TypeBClass and
|
|
* zero-initialization of the remaining fields in TypeBClass.
|
|
* The dynamic members of TypeAClass within TypeBClass now need
|
|
* reinitialization which is performed by calling type_a_base_class_init()
|
|
* with an argument of TypeBClass.
|
|
*
|
|
* After that, the GBaseInitFunc() of TypeBClass, type_b_base_class_init()
|
|
* is called to allocate the dynamic members of TypeBClass (dynamic_gstring),
|
|
* and finally the GClassInitFunc() of TypeBClass, type_b_class_init(),
|
|
* is called to complete the initialization process with the static members
|
|
* (static_float).
|
|
*
|
|
* Corresponding finalization counter parts to the GBaseInitFunc() functions
|
|
* have to be provided to release allocated resources at class finalization
|
|
* time.
|
|
*/
|
|
typedef void (*GClassInitFunc) (gpointer g_class,
|
|
gpointer class_data);
|
|
/**
|
|
* GClassFinalizeFunc:
|
|
* @g_class: (type GObject.TypeClass): The #GTypeClass structure to finalize
|
|
* @class_data: The @class_data member supplied via the #GTypeInfo structure
|
|
*
|
|
* A callback function used by the type system to finalize a class.
|
|
* This function is rarely needed, as dynamically allocated class resources
|
|
* should be handled by GBaseInitFunc() and GBaseFinalizeFunc().
|
|
* Also, specification of a GClassFinalizeFunc() in the #GTypeInfo
|
|
* structure of a static type is invalid, because classes of static types
|
|
* will never be finalized (they are artificially kept alive when their
|
|
* reference count drops to zero).
|
|
*/
|
|
typedef void (*GClassFinalizeFunc) (gpointer g_class,
|
|
gpointer class_data);
|
|
/**
|
|
* GInstanceInitFunc:
|
|
* @instance: The instance to initialize
|
|
* @g_class: (type GObject.TypeClass): The class of the type the instance is
|
|
* created for
|
|
*
|
|
* A callback function used by the type system to initialize a new
|
|
* instance of a type. This function initializes all instance members and
|
|
* allocates any resources required by it.
|
|
*
|
|
* Initialization of a derived instance involves calling all its parent
|
|
* types instance initializers, so the class member of the instance
|
|
* is altered during its initialization to always point to the class that
|
|
* belongs to the type the current initializer was introduced for.
|
|
*
|
|
* The extended members of @instance are guaranteed to have been filled with
|
|
* zeros before this function is called.
|
|
*/
|
|
typedef void (*GInstanceInitFunc) (GTypeInstance *instance,
|
|
gpointer g_class);
|
|
/**
|
|
* GInterfaceInitFunc:
|
|
* @g_iface: (type GObject.TypeInterface): The interface structure to initialize
|
|
* @iface_data: The @interface_data supplied via the #GInterfaceInfo structure
|
|
*
|
|
* A callback function used by the type system to initialize a new
|
|
* interface. This function should initialize all internal data and
|
|
* allocate any resources required by the interface.
|
|
*
|
|
* The members of @iface_data are guaranteed to have been filled with
|
|
* zeros before this function is called.
|
|
*/
|
|
typedef void (*GInterfaceInitFunc) (gpointer g_iface,
|
|
gpointer iface_data);
|
|
/**
|
|
* GInterfaceFinalizeFunc:
|
|
* @g_iface: (type GObject.TypeInterface): The interface structure to finalize
|
|
* @iface_data: The @interface_data supplied via the #GInterfaceInfo structure
|
|
*
|
|
* A callback function used by the type system to finalize an interface.
|
|
* This function should destroy any internal data and release any resources
|
|
* allocated by the corresponding GInterfaceInitFunc() function.
|
|
*/
|
|
typedef void (*GInterfaceFinalizeFunc) (gpointer g_iface,
|
|
gpointer iface_data);
|
|
/**
|
|
* GTypeClassCacheFunc:
|
|
* @cache_data: data that was given to the g_type_add_class_cache_func() call
|
|
* @g_class: (type GObject.TypeClass): The #GTypeClass structure which is
|
|
* unreferenced
|
|
*
|
|
* A callback function which is called when the reference count of a class
|
|
* drops to zero. It may use g_type_class_ref() to prevent the class from
|
|
* being freed. You should not call g_type_class_unref() from a
|
|
* #GTypeClassCacheFunc function to prevent infinite recursion, use
|
|
* g_type_class_unref_uncached() instead.
|
|
*
|
|
* The functions have to check the class id passed in to figure
|
|
* whether they actually want to cache the class of this type, since all
|
|
* classes are routed through the same #GTypeClassCacheFunc chain.
|
|
*
|
|
* Returns: %TRUE to stop further #GTypeClassCacheFuncs from being
|
|
* called, %FALSE to continue
|
|
*/
|
|
typedef gboolean (*GTypeClassCacheFunc) (gpointer cache_data,
|
|
GTypeClass *g_class);
|
|
/**
|
|
* GTypeInterfaceCheckFunc:
|
|
* @check_data: data passed to g_type_add_interface_check()
|
|
* @g_iface: (type GObject.TypeInterface): the interface that has been
|
|
* initialized
|
|
*
|
|
* A callback called after an interface vtable is initialized.
|
|
* See g_type_add_interface_check().
|
|
*
|
|
* Since: 2.4
|
|
*/
|
|
typedef void (*GTypeInterfaceCheckFunc) (gpointer check_data,
|
|
gpointer g_iface);
|
|
/**
|
|
* GTypeFundamentalFlags:
|
|
* @G_TYPE_FLAG_CLASSED: Indicates a classed type
|
|
* @G_TYPE_FLAG_INSTANTIATABLE: Indicates an instantiatable type (implies classed)
|
|
* @G_TYPE_FLAG_DERIVABLE: Indicates a flat derivable type
|
|
* @G_TYPE_FLAG_DEEP_DERIVABLE: Indicates a deep derivable type (implies derivable)
|
|
*
|
|
* Bit masks used to check or determine specific characteristics of a
|
|
* fundamental type.
|
|
*/
|
|
typedef enum /*< skip >*/
|
|
{
|
|
G_TYPE_FLAG_CLASSED = (1 << 0),
|
|
G_TYPE_FLAG_INSTANTIATABLE = (1 << 1),
|
|
G_TYPE_FLAG_DERIVABLE = (1 << 2),
|
|
G_TYPE_FLAG_DEEP_DERIVABLE = (1 << 3)
|
|
} GTypeFundamentalFlags;
|
|
/**
|
|
* GTypeFlags:
|
|
* @G_TYPE_FLAG_ABSTRACT: Indicates an abstract type. No instances can be
|
|
* created for an abstract type
|
|
* @G_TYPE_FLAG_VALUE_ABSTRACT: Indicates an abstract value type, i.e. a type
|
|
* that introduces a value table, but can't be used for
|
|
* g_value_init()
|
|
*
|
|
* Bit masks used to check or determine characteristics of a type.
|
|
*/
|
|
typedef enum /*< skip >*/
|
|
{
|
|
G_TYPE_FLAG_ABSTRACT = (1 << 4),
|
|
G_TYPE_FLAG_VALUE_ABSTRACT = (1 << 5)
|
|
} GTypeFlags;
|
|
/**
|
|
* GTypeInfo:
|
|
* @class_size: Size of the class structure (required for interface, classed and instantiatable types)
|
|
* @base_init: Location of the base initialization function (optional)
|
|
* @base_finalize: Location of the base finalization function (optional)
|
|
* @class_init: Location of the class initialization function for
|
|
* classed and instantiatable types. Location of the default vtable
|
|
* inititalization function for interface types. (optional) This function
|
|
* is used both to fill in virtual functions in the class or default vtable,
|
|
* and to do type-specific setup such as registering signals and object
|
|
* properties.
|
|
* @class_finalize: Location of the class finalization function for
|
|
* classed and instantiatable types. Location of the default vtable
|
|
* finalization function for interface types. (optional)
|
|
* @class_data: User-supplied data passed to the class init/finalize functions
|
|
* @instance_size: Size of the instance (object) structure (required for instantiatable types only)
|
|
* @n_preallocs: Prior to GLib 2.10, it specified the number of pre-allocated (cached) instances to reserve memory for (0 indicates no caching). Since GLib 2.10, it is ignored, since instances are allocated with the [slice allocator][glib-Memory-Slices] now.
|
|
* @instance_init: Location of the instance initialization function (optional, for instantiatable types only)
|
|
* @value_table: A #GTypeValueTable function table for generic handling of GValues
|
|
* of this type (usually only useful for fundamental types)
|
|
*
|
|
* This structure is used to provide the type system with the information
|
|
* required to initialize and destruct (finalize) a type's class and
|
|
* its instances.
|
|
*
|
|
* The initialized structure is passed to the g_type_register_static() function
|
|
* (or is copied into the provided #GTypeInfo structure in the
|
|
* g_type_plugin_complete_type_info()). The type system will perform a deep
|
|
* copy of this structure, so its memory does not need to be persistent
|
|
* across invocation of g_type_register_static().
|
|
*/
|
|
struct _GTypeInfo
|
|
{
|
|
/* interface types, classed types, instantiated types */
|
|
guint16 class_size;
|
|
|
|
GBaseInitFunc base_init;
|
|
GBaseFinalizeFunc base_finalize;
|
|
|
|
/* interface types, classed types, instantiated types */
|
|
GClassInitFunc class_init;
|
|
GClassFinalizeFunc class_finalize;
|
|
gconstpointer class_data;
|
|
|
|
/* instantiated types */
|
|
guint16 instance_size;
|
|
guint16 n_preallocs;
|
|
GInstanceInitFunc instance_init;
|
|
|
|
/* value handling */
|
|
const GTypeValueTable *value_table;
|
|
};
|
|
/**
|
|
* GTypeFundamentalInfo:
|
|
* @type_flags: #GTypeFundamentalFlags describing the characteristics of the fundamental type
|
|
*
|
|
* A structure that provides information to the type system which is
|
|
* used specifically for managing fundamental types.
|
|
*/
|
|
struct _GTypeFundamentalInfo
|
|
{
|
|
GTypeFundamentalFlags type_flags;
|
|
};
|
|
/**
|
|
* GInterfaceInfo:
|
|
* @interface_init: location of the interface initialization function
|
|
* @interface_finalize: location of the interface finalization function
|
|
* @interface_data: user-supplied data passed to the interface init/finalize functions
|
|
*
|
|
* A structure that provides information to the type system which is
|
|
* used specifically for managing interface types.
|
|
*/
|
|
struct _GInterfaceInfo
|
|
{
|
|
GInterfaceInitFunc interface_init;
|
|
GInterfaceFinalizeFunc interface_finalize;
|
|
gpointer interface_data;
|
|
};
|
|
/**
|
|
* GTypeValueTable:
|
|
* @value_init: Default initialize @values contents by poking values
|
|
* directly into the value->data array. The data array of
|
|
* the #GValue passed into this function was zero-filled
|
|
* with `memset()`, so no care has to be taken to free any
|
|
* old contents. E.g. for the implementation of a string
|
|
* value that may never be %NULL, the implementation might
|
|
* look like:
|
|
* |[<!-- language="C" -->
|
|
* value->data[0].v_pointer = g_strdup ("");
|
|
* ]|
|
|
* @value_free: Free any old contents that might be left in the
|
|
* data array of the passed in @value. No resources may
|
|
* remain allocated through the #GValue contents after
|
|
* this function returns. E.g. for our above string type:
|
|
* |[<!-- language="C" -->
|
|
* // only free strings without a specific flag for static storage
|
|
* if (!(value->data[1].v_uint & G_VALUE_NOCOPY_CONTENTS))
|
|
* g_free (value->data[0].v_pointer);
|
|
* ]|
|
|
* @value_copy: @dest_value is a #GValue with zero-filled data section
|
|
* and @src_value is a properly setup #GValue of same or
|
|
* derived type.
|
|
* The purpose of this function is to copy the contents of
|
|
* @src_value into @dest_value in a way, that even after
|
|
* @src_value has been freed, the contents of @dest_value
|
|
* remain valid. String type example:
|
|
* |[<!-- language="C" -->
|
|
* dest_value->data[0].v_pointer = g_strdup (src_value->data[0].v_pointer);
|
|
* ]|
|
|
* @value_peek_pointer: If the value contents fit into a pointer, such as objects
|
|
* or strings, return this pointer, so the caller can peek at
|
|
* the current contents. To extend on our above string example:
|
|
* |[<!-- language="C" -->
|
|
* return value->data[0].v_pointer;
|
|
* ]|
|
|
* @collect_format: A string format describing how to collect the contents of
|
|
* this value bit-by-bit. Each character in the format represents
|
|
* an argument to be collected, and the characters themselves indicate
|
|
* the type of the argument. Currently supported arguments are:
|
|
* - 'i' - Integers. passed as collect_values[].v_int.
|
|
* - 'l' - Longs. passed as collect_values[].v_long.
|
|
* - 'd' - Doubles. passed as collect_values[].v_double.
|
|
* - 'p' - Pointers. passed as collect_values[].v_pointer.
|
|
* It should be noted that for variable argument list construction,
|
|
* ANSI C promotes every type smaller than an integer to an int, and
|
|
* floats to doubles. So for collection of short int or char, 'i'
|
|
* needs to be used, and for collection of floats 'd'.
|
|
* @collect_value: The collect_value() function is responsible for converting the
|
|
* values collected from a variable argument list into contents
|
|
* suitable for storage in a GValue. This function should setup
|
|
* @value similar to value_init(); e.g. for a string value that
|
|
* does not allow %NULL pointers, it needs to either spew an error,
|
|
* or do an implicit conversion by storing an empty string.
|
|
* The @value passed in to this function has a zero-filled data
|
|
* array, so just like for value_init() it is guaranteed to not
|
|
* contain any old contents that might need freeing.
|
|
* @n_collect_values is exactly the string length of @collect_format,
|
|
* and @collect_values is an array of unions #GTypeCValue with
|
|
* length @n_collect_values, containing the collected values
|
|
* according to @collect_format.
|
|
* @collect_flags is an argument provided as a hint by the caller.
|
|
* It may contain the flag %G_VALUE_NOCOPY_CONTENTS indicating,
|
|
* that the collected value contents may be considered "static"
|
|
* for the duration of the @value lifetime.
|
|
* Thus an extra copy of the contents stored in @collect_values is
|
|
* not required for assignment to @value.
|
|
* For our above string example, we continue with:
|
|
* |[<!-- language="C" -->
|
|
* if (!collect_values[0].v_pointer)
|
|
* value->data[0].v_pointer = g_strdup ("");
|
|
* else if (collect_flags & G_VALUE_NOCOPY_CONTENTS)
|
|
* {
|
|
* value->data[0].v_pointer = collect_values[0].v_pointer;
|
|
* // keep a flag for the value_free() implementation to not free this string
|
|
* value->data[1].v_uint = G_VALUE_NOCOPY_CONTENTS;
|
|
* }
|
|
* else
|
|
* value->data[0].v_pointer = g_strdup (collect_values[0].v_pointer);
|
|
* return NULL;
|
|
* ]|
|
|
* It should be noted, that it is generally a bad idea to follow the
|
|
* #G_VALUE_NOCOPY_CONTENTS hint for reference counted types. Due to
|
|
* reentrancy requirements and reference count assertions performed
|
|
* by the signal emission code, reference counts should always be
|
|
* incremented for reference counted contents stored in the value->data
|
|
* array. To deviate from our string example for a moment, and taking
|
|
* a look at an exemplary implementation for collect_value() of
|
|
* #GObject:
|
|
* |[<!-- language="C" -->
|
|
* GObject *object = G_OBJECT (collect_values[0].v_pointer);
|
|
* g_return_val_if_fail (object != NULL,
|
|
* g_strdup_printf ("Object passed as invalid NULL pointer"));
|
|
* // never honour G_VALUE_NOCOPY_CONTENTS for ref-counted types
|
|
* value->data[0].v_pointer = g_object_ref (object);
|
|
* return NULL;
|
|
* ]|
|
|
* The reference count for valid objects is always incremented,
|
|
* regardless of @collect_flags. For invalid objects, the example
|
|
* returns a newly allocated string without altering @value.
|
|
* Upon success, collect_value() needs to return %NULL. If, however,
|
|
* an error condition occurred, collect_value() may spew an
|
|
* error by returning a newly allocated non-%NULL string, giving
|
|
* a suitable description of the error condition.
|
|
* The calling code makes no assumptions about the @value
|
|
* contents being valid upon error returns, @value
|
|
* is simply thrown away without further freeing. As such, it is
|
|
* a good idea to not allocate #GValue contents, prior to returning
|
|
* an error, however, collect_values() is not obliged to return
|
|
* a correctly setup @value for error returns, simply because
|
|
* any non-%NULL return is considered a fatal condition so further
|
|
* program behaviour is undefined.
|
|
* @lcopy_format: Format description of the arguments to collect for @lcopy_value,
|
|
* analogous to @collect_format. Usually, @lcopy_format string consists
|
|
* only of 'p's to provide lcopy_value() with pointers to storage locations.
|
|
* @lcopy_value: This function is responsible for storing the @value contents into
|
|
* arguments passed through a variable argument list which got
|
|
* collected into @collect_values according to @lcopy_format.
|
|
* @n_collect_values equals the string length of @lcopy_format,
|
|
* and @collect_flags may contain %G_VALUE_NOCOPY_CONTENTS.
|
|
* In contrast to collect_value(), lcopy_value() is obliged to
|
|
* always properly support %G_VALUE_NOCOPY_CONTENTS.
|
|
* Similar to collect_value() the function may prematurely abort
|
|
* by returning a newly allocated string describing an error condition.
|
|
* To complete the string example:
|
|
* |[<!-- language="C" -->
|
|
* gchar **string_p = collect_values[0].v_pointer;
|
|
* g_return_val_if_fail (string_p != NULL,
|
|
* g_strdup_printf ("string location passed as NULL"));
|
|
* if (collect_flags & G_VALUE_NOCOPY_CONTENTS)
|
|
* *string_p = value->data[0].v_pointer;
|
|
* else
|
|
* *string_p = g_strdup (value->data[0].v_pointer);
|
|
* ]|
|
|
* And an illustrative version of lcopy_value() for
|
|
* reference-counted types:
|
|
* |[<!-- language="C" -->
|
|
* GObject **object_p = collect_values[0].v_pointer;
|
|
* g_return_val_if_fail (object_p != NULL,
|
|
* g_strdup_printf ("object location passed as NULL"));
|
|
* if (!value->data[0].v_pointer)
|
|
* *object_p = NULL;
|
|
* else if (collect_flags & G_VALUE_NOCOPY_CONTENTS) // always honour
|
|
* *object_p = value->data[0].v_pointer;
|
|
* else
|
|
* *object_p = g_object_ref (value->data[0].v_pointer);
|
|
* return NULL;
|
|
* ]|
|
|
*
|
|
* The #GTypeValueTable provides the functions required by the #GValue
|
|
* implementation, to serve as a container for values of a type.
|
|
*/
|
|
|
|
struct _GTypeValueTable
|
|
{
|
|
void (*value_init) (GValue *value);
|
|
void (*value_free) (GValue *value);
|
|
void (*value_copy) (const GValue *src_value,
|
|
GValue *dest_value);
|
|
/* varargs functionality (optional) */
|
|
gpointer (*value_peek_pointer) (const GValue *value);
|
|
const gchar *collect_format;
|
|
gchar* (*collect_value) (GValue *value,
|
|
guint n_collect_values,
|
|
GTypeCValue *collect_values,
|
|
guint collect_flags);
|
|
const gchar *lcopy_format;
|
|
gchar* (*lcopy_value) (const GValue *value,
|
|
guint n_collect_values,
|
|
GTypeCValue *collect_values,
|
|
guint collect_flags);
|
|
};
|
|
GLIB_AVAILABLE_IN_ALL
|
|
GType g_type_register_static (GType parent_type,
|
|
const gchar *type_name,
|
|
const GTypeInfo *info,
|
|
GTypeFlags flags);
|
|
GLIB_AVAILABLE_IN_ALL
|
|
GType g_type_register_static_simple (GType parent_type,
|
|
const gchar *type_name,
|
|
guint class_size,
|
|
GClassInitFunc class_init,
|
|
guint instance_size,
|
|
GInstanceInitFunc instance_init,
|
|
GTypeFlags flags);
|
|
|
|
GLIB_AVAILABLE_IN_ALL
|
|
GType g_type_register_dynamic (GType parent_type,
|
|
const gchar *type_name,
|
|
GTypePlugin *plugin,
|
|
GTypeFlags flags);
|
|
GLIB_AVAILABLE_IN_ALL
|
|
GType g_type_register_fundamental (GType type_id,
|
|
const gchar *type_name,
|
|
const GTypeInfo *info,
|
|
const GTypeFundamentalInfo *finfo,
|
|
GTypeFlags flags);
|
|
GLIB_AVAILABLE_IN_ALL
|
|
void g_type_add_interface_static (GType instance_type,
|
|
GType interface_type,
|
|
const GInterfaceInfo *info);
|
|
GLIB_AVAILABLE_IN_ALL
|
|
void g_type_add_interface_dynamic (GType instance_type,
|
|
GType interface_type,
|
|
GTypePlugin *plugin);
|
|
GLIB_AVAILABLE_IN_ALL
|
|
void g_type_interface_add_prerequisite (GType interface_type,
|
|
GType prerequisite_type);
|
|
GLIB_AVAILABLE_IN_ALL
|
|
GType*g_type_interface_prerequisites (GType interface_type,
|
|
guint *n_prerequisites);
|
|
GLIB_AVAILABLE_IN_2_68
|
|
GType g_type_interface_instantiatable_prerequisite
|
|
(GType interface_type);
|
|
GLIB_DEPRECATED_IN_2_58
|
|
void g_type_class_add_private (gpointer g_class,
|
|
gsize private_size);
|
|
GLIB_AVAILABLE_IN_2_38
|
|
gint g_type_add_instance_private (GType class_type,
|
|
gsize private_size);
|
|
GLIB_AVAILABLE_IN_ALL
|
|
gpointer g_type_instance_get_private (GTypeInstance *instance,
|
|
GType private_type);
|
|
GLIB_AVAILABLE_IN_2_38
|
|
void g_type_class_adjust_private_offset (gpointer g_class,
|
|
gint *private_size_or_offset);
|
|
|
|
GLIB_AVAILABLE_IN_ALL
|
|
void g_type_add_class_private (GType class_type,
|
|
gsize private_size);
|
|
GLIB_AVAILABLE_IN_ALL
|
|
gpointer g_type_class_get_private (GTypeClass *klass,
|
|
GType private_type);
|
|
GLIB_AVAILABLE_IN_2_38
|
|
gint g_type_class_get_instance_private_offset (gpointer g_class);
|
|
|
|
GLIB_AVAILABLE_IN_2_34
|
|
void g_type_ensure (GType type);
|
|
GLIB_AVAILABLE_IN_2_36
|
|
guint g_type_get_type_registration_serial (void);
|
|
|
|
|
|
/* --- GType boilerplate --- */
|
|
/**
|
|
* G_DECLARE_FINAL_TYPE:
|
|
* @ModuleObjName: The name of the new type, in camel case (like `GtkWidget`)
|
|
* @module_obj_name: The name of the new type in lowercase, with words
|
|
* separated by `_` (like `gtk_widget`)
|
|
* @MODULE: The name of the module, in all caps (like `GTK`)
|
|
* @OBJ_NAME: The bare name of the type, in all caps (like `WIDGET`)
|
|
* @ParentName: the name of the parent type, in camel case (like `GtkWidget`)
|
|
*
|
|
* A convenience macro for emitting the usual declarations in the header file for a type which is not (at the
|
|
* present time) intended to be subclassed.
|
|
*
|
|
* You might use it in a header as follows:
|
|
*
|
|
* |[
|
|
* #ifndef _myapp_window_h_
|
|
* #define _myapp_window_h_
|
|
*
|
|
* #include <gtk/gtk.h>
|
|
*
|
|
* #define MY_APP_TYPE_WINDOW my_app_window_get_type ()
|
|
* G_DECLARE_FINAL_TYPE (MyAppWindow, my_app_window, MY_APP, WINDOW, GtkWindow)
|
|
*
|
|
* MyAppWindow * my_app_window_new (void);
|
|
*
|
|
* ...
|
|
*
|
|
* #endif
|
|
* ]|
|
|
*
|
|
* This results in the following things happening:
|
|
*
|
|
* - the usual `my_app_window_get_type()` function is declared with a return type of #GType
|
|
*
|
|
* - the `MyAppWindow` type is defined as a `typedef` of `struct _MyAppWindow`. The struct itself is not
|
|
* defined and should be defined from the .c file before G_DEFINE_TYPE() is used.
|
|
*
|
|
* - the `MY_APP_WINDOW()` cast is emitted as `static inline` function along with the `MY_APP_IS_WINDOW()` type
|
|
* checking function
|
|
*
|
|
* - the `MyAppWindowClass` type is defined as a struct containing `GtkWindowClass`. This is done for the
|
|
* convenience of the person defining the type and should not be considered to be part of the ABI. In
|
|
* particular, without a firm declaration of the instance structure, it is not possible to subclass the type
|
|
* and therefore the fact that the size of the class structure is exposed is not a concern and it can be
|
|
* freely changed at any point in the future.
|
|
*
|
|
* - g_autoptr() support being added for your type, based on the type of your parent class
|
|
*
|
|
* You can only use this function if your parent type also supports g_autoptr().
|
|
*
|
|
* Because the type macro (`MY_APP_TYPE_WINDOW` in the above example) is not a callable, you must continue to
|
|
* manually define this as a macro for yourself.
|
|
*
|
|
* The declaration of the `_get_type()` function is the first thing emitted by the macro. This allows this macro
|
|
* to be used in the usual way with export control and API versioning macros.
|
|
*
|
|
* If you want to declare your own class structure, use G_DECLARE_DERIVABLE_TYPE().
|
|
*
|
|
* If you are writing a library, it is important to note that it is possible to convert a type from using
|
|
* G_DECLARE_FINAL_TYPE() to G_DECLARE_DERIVABLE_TYPE() without breaking API or ABI. As a precaution, you
|
|
* should therefore use G_DECLARE_FINAL_TYPE() until you are sure that it makes sense for your class to be
|
|
* subclassed. Once a class structure has been exposed it is not possible to change its size or remove or
|
|
* reorder items without breaking the API and/or ABI.
|
|
*
|
|
* Since: 2.44
|
|
**/
|
|
#define G_DECLARE_FINAL_TYPE(ModuleObjName, module_obj_name, MODULE, OBJ_NAME, ParentName) \
|
|
GType module_obj_name##_get_type (void); \
|
|
G_GNUC_BEGIN_IGNORE_DEPRECATIONS \
|
|
typedef struct _##ModuleObjName ModuleObjName; \
|
|
typedef struct { ParentName##Class parent_class; } ModuleObjName##Class; \
|
|
\
|
|
_GLIB_DEFINE_AUTOPTR_CHAINUP (ModuleObjName, ParentName) \
|
|
G_DEFINE_AUTOPTR_CLEANUP_FUNC (ModuleObjName##Class, g_type_class_unref) \
|
|
\
|
|
G_GNUC_UNUSED static inline ModuleObjName * MODULE##_##OBJ_NAME (gpointer ptr) { \
|
|
return G_TYPE_CHECK_INSTANCE_CAST (ptr, module_obj_name##_get_type (), ModuleObjName); } \
|
|
G_GNUC_UNUSED static inline gboolean MODULE##_IS_##OBJ_NAME (gpointer ptr) { \
|
|
return G_TYPE_CHECK_INSTANCE_TYPE (ptr, module_obj_name##_get_type ()); } \
|
|
G_GNUC_END_IGNORE_DEPRECATIONS
|
|
|
|
/**
|
|
* G_DECLARE_DERIVABLE_TYPE:
|
|
* @ModuleObjName: The name of the new type, in camel case (like `GtkWidget`)
|
|
* @module_obj_name: The name of the new type in lowercase, with words
|
|
* separated by `_` (like `gtk_widget`)
|
|
* @MODULE: The name of the module, in all caps (like `GTK`)
|
|
* @OBJ_NAME: The bare name of the type, in all caps (like `WIDGET`)
|
|
* @ParentName: the name of the parent type, in camel case (like `GtkWidget`)
|
|
*
|
|
* A convenience macro for emitting the usual declarations in the
|
|
* header file for a type which is intended to be subclassed.
|
|
*
|
|
* You might use it in a header as follows:
|
|
*
|
|
* |[
|
|
* #ifndef _gtk_frobber_h_
|
|
* #define _gtk_frobber_h_
|
|
*
|
|
* #define GTK_TYPE_FROBBER gtk_frobber_get_type ()
|
|
* GDK_AVAILABLE_IN_3_12
|
|
* G_DECLARE_DERIVABLE_TYPE (GtkFrobber, gtk_frobber, GTK, FROBBER, GtkWidget)
|
|
*
|
|
* struct _GtkFrobberClass
|
|
* {
|
|
* GtkWidgetClass parent_class;
|
|
*
|
|
* void (* handle_frob) (GtkFrobber *frobber,
|
|
* guint n_frobs);
|
|
*
|
|
* gpointer padding[12];
|
|
* };
|
|
*
|
|
* GtkWidget * gtk_frobber_new (void);
|
|
*
|
|
* ...
|
|
*
|
|
* #endif
|
|
* ]|
|
|
*
|
|
* This results in the following things happening:
|
|
*
|
|
* - the usual `gtk_frobber_get_type()` function is declared with a return type of #GType
|
|
*
|
|
* - the `GtkFrobber` struct is created with `GtkWidget` as the first and only item. You are expected to use
|
|
* a private structure from your .c file to store your instance variables.
|
|
*
|
|
* - the `GtkFrobberClass` type is defined as a typedef to `struct _GtkFrobberClass`, which is left undefined.
|
|
* You should do this from the header file directly after you use the macro.
|
|
*
|
|
* - the `GTK_FROBBER()` and `GTK_FROBBER_CLASS()` casts are emitted as `static inline` functions along with
|
|
* the `GTK_IS_FROBBER()` and `GTK_IS_FROBBER_CLASS()` type checking functions and `GTK_FROBBER_GET_CLASS()`
|
|
* function.
|
|
*
|
|
* - g_autoptr() support being added for your type, based on the type of your parent class
|
|
*
|
|
* You can only use this function if your parent type also supports g_autoptr().
|
|
*
|
|
* Because the type macro (`GTK_TYPE_FROBBER` in the above example) is not a callable, you must continue to
|
|
* manually define this as a macro for yourself.
|
|
*
|
|
* The declaration of the `_get_type()` function is the first thing emitted by the macro. This allows this macro
|
|
* to be used in the usual way with export control and API versioning macros.
|
|
*
|
|
* If you are writing a library, it is important to note that it is possible to convert a type from using
|
|
* G_DECLARE_FINAL_TYPE() to G_DECLARE_DERIVABLE_TYPE() without breaking API or ABI. As a precaution, you
|
|
* should therefore use G_DECLARE_FINAL_TYPE() until you are sure that it makes sense for your class to be
|
|
* subclassed. Once a class structure has been exposed it is not possible to change its size or remove or
|
|
* reorder items without breaking the API and/or ABI. If you want to declare your own class structure, use
|
|
* G_DECLARE_DERIVABLE_TYPE(). If you want to declare a class without exposing the class or instance
|
|
* structures, use G_DECLARE_FINAL_TYPE().
|
|
*
|
|
* If you must use G_DECLARE_DERIVABLE_TYPE() you should be sure to include some padding at the bottom of your
|
|
* class structure to leave space for the addition of future virtual functions.
|
|
*
|
|
* Since: 2.44
|
|
**/
|
|
#define G_DECLARE_DERIVABLE_TYPE(ModuleObjName, module_obj_name, MODULE, OBJ_NAME, ParentName) \
|
|
GType module_obj_name##_get_type (void); \
|
|
G_GNUC_BEGIN_IGNORE_DEPRECATIONS \
|
|
typedef struct _##ModuleObjName ModuleObjName; \
|
|
typedef struct _##ModuleObjName##Class ModuleObjName##Class; \
|
|
struct _##ModuleObjName { ParentName parent_instance; }; \
|
|
\
|
|
_GLIB_DEFINE_AUTOPTR_CHAINUP (ModuleObjName, ParentName) \
|
|
G_DEFINE_AUTOPTR_CLEANUP_FUNC (ModuleObjName##Class, g_type_class_unref) \
|
|
\
|
|
G_GNUC_UNUSED static inline ModuleObjName * MODULE##_##OBJ_NAME (gpointer ptr) { \
|
|
return G_TYPE_CHECK_INSTANCE_CAST (ptr, module_obj_name##_get_type (), ModuleObjName); } \
|
|
G_GNUC_UNUSED static inline ModuleObjName##Class * MODULE##_##OBJ_NAME##_CLASS (gpointer ptr) { \
|
|
return G_TYPE_CHECK_CLASS_CAST (ptr, module_obj_name##_get_type (), ModuleObjName##Class); } \
|
|
G_GNUC_UNUSED static inline gboolean MODULE##_IS_##OBJ_NAME (gpointer ptr) { \
|
|
return G_TYPE_CHECK_INSTANCE_TYPE (ptr, module_obj_name##_get_type ()); } \
|
|
G_GNUC_UNUSED static inline gboolean MODULE##_IS_##OBJ_NAME##_CLASS (gpointer ptr) { \
|
|
return G_TYPE_CHECK_CLASS_TYPE (ptr, module_obj_name##_get_type ()); } \
|
|
G_GNUC_UNUSED static inline ModuleObjName##Class * MODULE##_##OBJ_NAME##_GET_CLASS (gpointer ptr) { \
|
|
return G_TYPE_INSTANCE_GET_CLASS (ptr, module_obj_name##_get_type (), ModuleObjName##Class); } \
|
|
G_GNUC_END_IGNORE_DEPRECATIONS
|
|
|
|
/**
|
|
* G_DECLARE_INTERFACE:
|
|
* @ModuleObjName: The name of the new type, in camel case (like `GtkWidget`)
|
|
* @module_obj_name: The name of the new type in lowercase, with words
|
|
* separated by `_` (like `gtk_widget`)
|
|
* @MODULE: The name of the module, in all caps (like `GTK`)
|
|
* @OBJ_NAME: The bare name of the type, in all caps (like `WIDGET`)
|
|
* @PrerequisiteName: the name of the prerequisite type, in camel case (like `GtkWidget`)
|
|
*
|
|
* A convenience macro for emitting the usual declarations in the header file for a #GInterface type.
|
|
*
|
|
* You might use it in a header as follows:
|
|
*
|
|
* |[
|
|
* #ifndef _my_model_h_
|
|
* #define _my_model_h_
|
|
*
|
|
* #define MY_TYPE_MODEL my_model_get_type ()
|
|
* GDK_AVAILABLE_IN_3_12
|
|
* G_DECLARE_INTERFACE (MyModel, my_model, MY, MODEL, GObject)
|
|
*
|
|
* struct _MyModelInterface
|
|
* {
|
|
* GTypeInterface g_iface;
|
|
*
|
|
* gpointer (* get_item) (MyModel *model);
|
|
* };
|
|
*
|
|
* gpointer my_model_get_item (MyModel *model);
|
|
*
|
|
* ...
|
|
*
|
|
* #endif
|
|
* ]|
|
|
*
|
|
* This results in the following things happening:
|
|
*
|
|
* - the usual `my_model_get_type()` function is declared with a return type of #GType
|
|
*
|
|
* - the `MyModelInterface` type is defined as a typedef to `struct _MyModelInterface`,
|
|
* which is left undefined. You should do this from the header file directly after
|
|
* you use the macro.
|
|
*
|
|
* - the `MY_MODEL()` cast is emitted as `static inline` functions along with
|
|
* the `MY_IS_MODEL()` type checking function and `MY_MODEL_GET_IFACE()` function.
|
|
*
|
|
* - g_autoptr() support being added for your type, based on your prerequisite type.
|
|
*
|
|
* You can only use this function if your prerequisite type also supports g_autoptr().
|
|
*
|
|
* Because the type macro (`MY_TYPE_MODEL` in the above example) is not a callable, you must continue to
|
|
* manually define this as a macro for yourself.
|
|
*
|
|
* The declaration of the `_get_type()` function is the first thing emitted by the macro. This allows this macro
|
|
* to be used in the usual way with export control and API versioning macros.
|
|
*
|
|
* Since: 2.44
|
|
**/
|
|
#define G_DECLARE_INTERFACE(ModuleObjName, module_obj_name, MODULE, OBJ_NAME, PrerequisiteName) \
|
|
GType module_obj_name##_get_type (void); \
|
|
G_GNUC_BEGIN_IGNORE_DEPRECATIONS \
|
|
typedef struct _##ModuleObjName ModuleObjName; \
|
|
typedef struct _##ModuleObjName##Interface ModuleObjName##Interface; \
|
|
\
|
|
_GLIB_DEFINE_AUTOPTR_CHAINUP (ModuleObjName, PrerequisiteName) \
|
|
\
|
|
G_GNUC_UNUSED static inline ModuleObjName * MODULE##_##OBJ_NAME (gpointer ptr) { \
|
|
return G_TYPE_CHECK_INSTANCE_CAST (ptr, module_obj_name##_get_type (), ModuleObjName); } \
|
|
G_GNUC_UNUSED static inline gboolean MODULE##_IS_##OBJ_NAME (gpointer ptr) { \
|
|
return G_TYPE_CHECK_INSTANCE_TYPE (ptr, module_obj_name##_get_type ()); } \
|
|
G_GNUC_UNUSED static inline ModuleObjName##Interface * MODULE##_##OBJ_NAME##_GET_IFACE (gpointer ptr) { \
|
|
return G_TYPE_INSTANCE_GET_INTERFACE (ptr, module_obj_name##_get_type (), ModuleObjName##Interface); } \
|
|
G_GNUC_END_IGNORE_DEPRECATIONS
|
|
|
|
/**
|
|
* G_DEFINE_TYPE:
|
|
* @TN: The name of the new type, in Camel case.
|
|
* @t_n: The name of the new type, in lowercase, with words
|
|
* separated by `_`.
|
|
* @T_P: The #GType of the parent type.
|
|
*
|
|
* A convenience macro for type implementations, which declares a class
|
|
* initialization function, an instance initialization function (see #GTypeInfo
|
|
* for information about these) and a static variable named `t_n_parent_class`
|
|
* pointing to the parent class. Furthermore, it defines a `*_get_type()` function.
|
|
* See G_DEFINE_TYPE_EXTENDED() for an example.
|
|
*
|
|
* Since: 2.4
|
|
*/
|
|
#define G_DEFINE_TYPE(TN, t_n, T_P) G_DEFINE_TYPE_EXTENDED (TN, t_n, T_P, 0, {})
|
|
/**
|
|
* G_DEFINE_TYPE_WITH_CODE:
|
|
* @TN: The name of the new type, in Camel case.
|
|
* @t_n: The name of the new type in lowercase, with words separated by `_`.
|
|
* @T_P: The #GType of the parent type.
|
|
* @_C_: Custom code that gets inserted in the `*_get_type()` function.
|
|
*
|
|
* A convenience macro for type implementations.
|
|
* Similar to G_DEFINE_TYPE(), but allows you to insert custom code into the
|
|
* `*_get_type()` function, e.g. interface implementations via G_IMPLEMENT_INTERFACE().
|
|
* See G_DEFINE_TYPE_EXTENDED() for an example.
|
|
*
|
|
* Since: 2.4
|
|
*/
|
|
#define G_DEFINE_TYPE_WITH_CODE(TN, t_n, T_P, _C_) _G_DEFINE_TYPE_EXTENDED_BEGIN (TN, t_n, T_P, 0) {_C_;} _G_DEFINE_TYPE_EXTENDED_END()
|
|
/**
|
|
* G_DEFINE_TYPE_WITH_PRIVATE:
|
|
* @TN: The name of the new type, in Camel case.
|
|
* @t_n: The name of the new type, in lowercase, with words
|
|
* separated by `_`.
|
|
* @T_P: The #GType of the parent type.
|
|
*
|
|
* A convenience macro for type implementations, which declares a class
|
|
* initialization function, an instance initialization function (see #GTypeInfo
|
|
* for information about these), a static variable named `t_n_parent_class`
|
|
* pointing to the parent class, and adds private instance data to the type.
|
|
* Furthermore, it defines a `*_get_type()` function. See G_DEFINE_TYPE_EXTENDED()
|
|
* for an example.
|
|
*
|
|
* Note that private structs added with this macros must have a struct
|
|
* name of the form `TN ## Private`.
|
|
*
|
|
* The private instance data can be retrieved using the automatically generated
|
|
* getter function `t_n_get_instance_private()`.
|
|
*
|
|
* See also: G_ADD_PRIVATE()
|
|
*
|
|
* Since: 2.38
|
|
*/
|
|
#define G_DEFINE_TYPE_WITH_PRIVATE(TN, t_n, T_P) G_DEFINE_TYPE_EXTENDED (TN, t_n, T_P, 0, G_ADD_PRIVATE (TN))
|
|
/**
|
|
* G_DEFINE_ABSTRACT_TYPE:
|
|
* @TN: The name of the new type, in Camel case.
|
|
* @t_n: The name of the new type, in lowercase, with words
|
|
* separated by `_`.
|
|
* @T_P: The #GType of the parent type.
|
|
*
|
|
* A convenience macro for type implementations.
|
|
* Similar to G_DEFINE_TYPE(), but defines an abstract type.
|
|
* See G_DEFINE_TYPE_EXTENDED() for an example.
|
|
*
|
|
* Since: 2.4
|
|
*/
|
|
#define G_DEFINE_ABSTRACT_TYPE(TN, t_n, T_P) G_DEFINE_TYPE_EXTENDED (TN, t_n, T_P, G_TYPE_FLAG_ABSTRACT, {})
|
|
/**
|
|
* G_DEFINE_ABSTRACT_TYPE_WITH_CODE:
|
|
* @TN: The name of the new type, in Camel case.
|
|
* @t_n: The name of the new type, in lowercase, with words
|
|
* separated by `_`.
|
|
* @T_P: The #GType of the parent type.
|
|
* @_C_: Custom code that gets inserted in the `type_name_get_type()` function.
|
|
*
|
|
* A convenience macro for type implementations.
|
|
* Similar to G_DEFINE_TYPE_WITH_CODE(), but defines an abstract type and
|
|
* allows you to insert custom code into the `*_get_type()` function, e.g.
|
|
* interface implementations via G_IMPLEMENT_INTERFACE().
|
|
* See G_DEFINE_TYPE_EXTENDED() for an example.
|
|
*
|
|
* Since: 2.4
|
|
*/
|
|
#define G_DEFINE_ABSTRACT_TYPE_WITH_CODE(TN, t_n, T_P, _C_) _G_DEFINE_TYPE_EXTENDED_BEGIN (TN, t_n, T_P, G_TYPE_FLAG_ABSTRACT) {_C_;} _G_DEFINE_TYPE_EXTENDED_END()
|
|
/**
|
|
* G_DEFINE_ABSTRACT_TYPE_WITH_PRIVATE:
|
|
* @TN: The name of the new type, in Camel case.
|
|
* @t_n: The name of the new type, in lowercase, with words
|
|
* separated by `_`.
|
|
* @T_P: The #GType of the parent type.
|
|
*
|
|
* Similar to G_DEFINE_TYPE_WITH_PRIVATE(), but defines an abstract type.
|
|
* See G_DEFINE_TYPE_EXTENDED() for an example.
|
|
*
|
|
* Since: 2.38
|
|
*/
|
|
#define G_DEFINE_ABSTRACT_TYPE_WITH_PRIVATE(TN, t_n, T_P) G_DEFINE_TYPE_EXTENDED (TN, t_n, T_P, G_TYPE_FLAG_ABSTRACT, G_ADD_PRIVATE (TN))
|
|
/**
|
|
* G_DEFINE_TYPE_EXTENDED:
|
|
* @TN: The name of the new type, in Camel case.
|
|
* @t_n: The name of the new type, in lowercase, with words
|
|
* separated by `_`.
|
|
* @T_P: The #GType of the parent type.
|
|
* @_f_: #GTypeFlags to pass to g_type_register_static()
|
|
* @_C_: Custom code that gets inserted in the `*_get_type()` function.
|
|
*
|
|
* The most general convenience macro for type implementations, on which
|
|
* G_DEFINE_TYPE(), etc are based.
|
|
*
|
|
* |[<!-- language="C" -->
|
|
* G_DEFINE_TYPE_EXTENDED (GtkGadget,
|
|
* gtk_gadget,
|
|
* GTK_TYPE_WIDGET,
|
|
* 0,
|
|
* G_ADD_PRIVATE (GtkGadget)
|
|
* G_IMPLEMENT_INTERFACE (TYPE_GIZMO,
|
|
* gtk_gadget_gizmo_init));
|
|
* ]|
|
|
* expands to
|
|
* |[<!-- language="C" -->
|
|
* static void gtk_gadget_init (GtkGadget *self);
|
|
* static void gtk_gadget_class_init (GtkGadgetClass *klass);
|
|
* static gpointer gtk_gadget_parent_class = NULL;
|
|
* static gint GtkGadget_private_offset;
|
|
* static void gtk_gadget_class_intern_init (gpointer klass)
|
|
* {
|
|
* gtk_gadget_parent_class = g_type_class_peek_parent (klass);
|
|
* if (GtkGadget_private_offset != 0)
|
|
* g_type_class_adjust_private_offset (klass, &GtkGadget_private_offset);
|
|
* gtk_gadget_class_init ((GtkGadgetClass*) klass);
|
|
* }
|
|
* static inline gpointer gtk_gadget_get_instance_private (GtkGadget *self)
|
|
* {
|
|
* return (G_STRUCT_MEMBER_P (self, GtkGadget_private_offset));
|
|
* }
|
|
*
|
|
* GType
|
|
* gtk_gadget_get_type (void)
|
|
* {
|
|
* static gsize static_g_define_type_id = 0;
|
|
* if (g_once_init_enter (&static_g_define_type_id))
|
|
* {
|
|
* GType g_define_type_id =
|
|
* g_type_register_static_simple (GTK_TYPE_WIDGET,
|
|
* g_intern_static_string ("GtkGadget"),
|
|
* sizeof (GtkGadgetClass),
|
|
* (GClassInitFunc) gtk_gadget_class_intern_init,
|
|
* sizeof (GtkGadget),
|
|
* (GInstanceInitFunc) gtk_gadget_init,
|
|
* 0);
|
|
* {
|
|
* GtkGadget_private_offset =
|
|
* g_type_add_instance_private (g_define_type_id, sizeof (GtkGadgetPrivate));
|
|
* }
|
|
* {
|
|
* const GInterfaceInfo g_implement_interface_info = {
|
|
* (GInterfaceInitFunc) gtk_gadget_gizmo_init
|
|
* };
|
|
* g_type_add_interface_static (g_define_type_id, TYPE_GIZMO, &g_implement_interface_info);
|
|
* }
|
|
* g_once_init_leave (&static_g_define_type_id, g_define_type_id);
|
|
* }
|
|
* return static_g_define_type_id;
|
|
* }
|
|
* ]|
|
|
* The only pieces which have to be manually provided are the definitions of
|
|
* the instance and class structure and the definitions of the instance and
|
|
* class init functions.
|
|
*
|
|
* Since: 2.4
|
|
*/
|
|
#define G_DEFINE_TYPE_EXTENDED(TN, t_n, T_P, _f_, _C_) _G_DEFINE_TYPE_EXTENDED_BEGIN (TN, t_n, T_P, _f_) {_C_;} _G_DEFINE_TYPE_EXTENDED_END()
|
|
|
|
/**
|
|
* G_DEFINE_INTERFACE:
|
|
* @TN: The name of the new type, in Camel case.
|
|
* @t_n: The name of the new type, in lowercase, with words separated by `_`.
|
|
* @T_P: The #GType of the prerequisite type for the interface, or %G_TYPE_INVALID
|
|
* for no prerequisite type.
|
|
*
|
|
* A convenience macro for #GTypeInterface definitions, which declares
|
|
* a default vtable initialization function and defines a `*_get_type()`
|
|
* function.
|
|
*
|
|
* The macro expects the interface initialization function to have the
|
|
* name `t_n ## _default_init`, and the interface structure to have the
|
|
* name `TN ## Interface`.
|
|
*
|
|
* The initialization function has signature
|
|
* `static void t_n ## _default_init (TypeName##Interface *klass);`, rather than
|
|
* the full #GInterfaceInitFunc signature, for brevity and convenience. If you
|
|
* need to use an initialization function with an `iface_data` argument, you
|
|
* must write the #GTypeInterface definitions manually.
|
|
*
|
|
* Since: 2.24
|
|
*/
|
|
#define G_DEFINE_INTERFACE(TN, t_n, T_P) G_DEFINE_INTERFACE_WITH_CODE(TN, t_n, T_P, ;)
|
|
|
|
/**
|
|
* G_DEFINE_INTERFACE_WITH_CODE:
|
|
* @TN: The name of the new type, in Camel case.
|
|
* @t_n: The name of the new type, in lowercase, with words separated by `_`.
|
|
* @T_P: The #GType of the prerequisite type for the interface, or %G_TYPE_INVALID
|
|
* for no prerequisite type.
|
|
* @_C_: Custom code that gets inserted in the `*_get_type()` function.
|
|
*
|
|
* A convenience macro for #GTypeInterface definitions. Similar to
|
|
* G_DEFINE_INTERFACE(), but allows you to insert custom code into the
|
|
* `*_get_type()` function, e.g. additional interface implementations
|
|
* via G_IMPLEMENT_INTERFACE(), or additional prerequisite types. See
|
|
* G_DEFINE_TYPE_EXTENDED() for a similar example using
|
|
* G_DEFINE_TYPE_WITH_CODE().
|
|
*
|
|
* Since: 2.24
|
|
*/
|
|
#define G_DEFINE_INTERFACE_WITH_CODE(TN, t_n, T_P, _C_) _G_DEFINE_INTERFACE_EXTENDED_BEGIN(TN, t_n, T_P) {_C_;} _G_DEFINE_INTERFACE_EXTENDED_END()
|
|
|
|
/**
|
|
* G_IMPLEMENT_INTERFACE:
|
|
* @TYPE_IFACE: The #GType of the interface to add
|
|
* @iface_init: (type GInterfaceInitFunc): The interface init function, of type #GInterfaceInitFunc
|
|
*
|
|
* A convenience macro to ease interface addition in the `_C_` section
|
|
* of G_DEFINE_TYPE_WITH_CODE() or G_DEFINE_ABSTRACT_TYPE_WITH_CODE().
|
|
* See G_DEFINE_TYPE_EXTENDED() for an example.
|
|
*
|
|
* Note that this macro can only be used together with the `G_DEFINE_TYPE_*`
|
|
* macros, since it depends on variable names from those macros.
|
|
*
|
|
* Since: 2.4
|
|
*/
|
|
#define G_IMPLEMENT_INTERFACE(TYPE_IFACE, iface_init) { \
|
|
const GInterfaceInfo g_implement_interface_info = { \
|
|
(GInterfaceInitFunc)(void (*)(void)) iface_init, NULL, NULL \
|
|
}; \
|
|
g_type_add_interface_static (g_define_type_id, TYPE_IFACE, &g_implement_interface_info); \
|
|
}
|
|
|
|
/**
|
|
* G_ADD_PRIVATE:
|
|
* @TypeName: the name of the type in CamelCase
|
|
*
|
|
* A convenience macro to ease adding private data to instances of a new type
|
|
* in the @_C_ section of G_DEFINE_TYPE_WITH_CODE() or
|
|
* G_DEFINE_ABSTRACT_TYPE_WITH_CODE().
|
|
*
|
|
* For instance:
|
|
*
|
|
* |[<!-- language="C" -->
|
|
* typedef struct _MyObject MyObject;
|
|
* typedef struct _MyObjectClass MyObjectClass;
|
|
*
|
|
* typedef struct {
|
|
* gint foo;
|
|
* gint bar;
|
|
* } MyObjectPrivate;
|
|
*
|
|
* G_DEFINE_TYPE_WITH_CODE (MyObject, my_object, G_TYPE_OBJECT,
|
|
* G_ADD_PRIVATE (MyObject))
|
|
* ]|
|
|
*
|
|
* Will add `MyObjectPrivate` as the private data to any instance of the
|
|
* `MyObject` type.
|
|
*
|
|
* `G_DEFINE_TYPE_*` macros will automatically create a private function
|
|
* based on the arguments to this macro, which can be used to safely
|
|
* retrieve the private data from an instance of the type; for instance:
|
|
*
|
|
* |[<!-- language="C" -->
|
|
* gint
|
|
* my_object_get_foo (MyObject *obj)
|
|
* {
|
|
* MyObjectPrivate *priv = my_object_get_instance_private (obj);
|
|
*
|
|
* g_return_val_if_fail (MY_IS_OBJECT (obj), 0);
|
|
*
|
|
* return priv->foo;
|
|
* }
|
|
*
|
|
* void
|
|
* my_object_set_bar (MyObject *obj,
|
|
* gint bar)
|
|
* {
|
|
* MyObjectPrivate *priv = my_object_get_instance_private (obj);
|
|
*
|
|
* g_return_if_fail (MY_IS_OBJECT (obj));
|
|
*
|
|
* if (priv->bar != bar)
|
|
* priv->bar = bar;
|
|
* }
|
|
* ]|
|
|
*
|
|
* Note that this macro can only be used together with the `G_DEFINE_TYPE_*`
|
|
* macros, since it depends on variable names from those macros.
|
|
*
|
|
* Also note that private structs added with these macros must have a struct
|
|
* name of the form `TypeNamePrivate`.
|
|
*
|
|
* It is safe to call the `_get_instance_private` function on %NULL or invalid
|
|
* objects since it's only adding an offset to the instance pointer. In that
|
|
* case the returned pointer must not be dereferenced.
|
|
*
|
|
* Since: 2.38
|
|
*/
|
|
#define G_ADD_PRIVATE(TypeName) { \
|
|
TypeName##_private_offset = \
|
|
g_type_add_instance_private (g_define_type_id, sizeof (TypeName##Private)); \
|
|
}
|
|
|
|
/**
|
|
* G_PRIVATE_OFFSET:
|
|
* @TypeName: the name of the type in CamelCase
|
|
* @field: the name of the field in the private data structure
|
|
*
|
|
* Evaluates to the offset of the @field inside the instance private data
|
|
* structure for @TypeName.
|
|
*
|
|
* Note that this macro can only be used together with the `G_DEFINE_TYPE_*`
|
|
* and G_ADD_PRIVATE() macros, since it depends on variable names from
|
|
* those macros.
|
|
*
|
|
* Since: 2.38
|
|
*/
|
|
#define G_PRIVATE_OFFSET(TypeName, field) \
|
|
(TypeName##_private_offset + (G_STRUCT_OFFSET (TypeName##Private, field)))
|
|
|
|
/**
|
|
* G_PRIVATE_FIELD_P:
|
|
* @TypeName: the name of the type in CamelCase
|
|
* @inst: the instance of @TypeName you wish to access
|
|
* @field_name: the name of the field in the private data structure
|
|
*
|
|
* Evaluates to a pointer to the @field_name inside the @inst private data
|
|
* structure for @TypeName.
|
|
*
|
|
* Note that this macro can only be used together with the `G_DEFINE_TYPE_*`
|
|
* and G_ADD_PRIVATE() macros, since it depends on variable names from
|
|
* those macros.
|
|
*
|
|
* Since: 2.38
|
|
*/
|
|
#define G_PRIVATE_FIELD_P(TypeName, inst, field_name) \
|
|
G_STRUCT_MEMBER_P (inst, G_PRIVATE_OFFSET (TypeName, field_name))
|
|
|
|
/**
|
|
* G_PRIVATE_FIELD:
|
|
* @TypeName: the name of the type in CamelCase
|
|
* @inst: the instance of @TypeName you wish to access
|
|
* @field_type: the type of the field in the private data structure
|
|
* @field_name: the name of the field in the private data structure
|
|
*
|
|
* Evaluates to the @field_name inside the @inst private data
|
|
* structure for @TypeName.
|
|
*
|
|
* Note that this macro can only be used together with the `G_DEFINE_TYPE_*`
|
|
* and G_ADD_PRIVATE() macros, since it depends on variable names from
|
|
* those macros.
|
|
*
|
|
* Since: 2.38
|
|
*/
|
|
#define G_PRIVATE_FIELD(TypeName, inst, field_type, field_name) \
|
|
G_STRUCT_MEMBER (field_type, inst, G_PRIVATE_OFFSET (TypeName, field_name))
|
|
|
|
/* we need to have this macro under conditional expansion, as it references
|
|
* a function that has been added in 2.38. see bug:
|
|
* https://bugzilla.gnome.org/show_bug.cgi?id=703191
|
|
*/
|
|
#if GLIB_VERSION_MAX_ALLOWED >= GLIB_VERSION_2_38
|
|
#define _G_DEFINE_TYPE_EXTENDED_CLASS_INIT(TypeName, type_name) \
|
|
static void type_name##_class_intern_init (gpointer klass) \
|
|
{ \
|
|
type_name##_parent_class = g_type_class_peek_parent (klass); \
|
|
if (TypeName##_private_offset != 0) \
|
|
g_type_class_adjust_private_offset (klass, &TypeName##_private_offset); \
|
|
type_name##_class_init ((TypeName##Class*) klass); \
|
|
}
|
|
|
|
#else
|
|
#define _G_DEFINE_TYPE_EXTENDED_CLASS_INIT(TypeName, type_name) \
|
|
static void type_name##_class_intern_init (gpointer klass) \
|
|
{ \
|
|
type_name##_parent_class = g_type_class_peek_parent (klass); \
|
|
type_name##_class_init ((TypeName##Class*) klass); \
|
|
}
|
|
#endif /* GLIB_VERSION_MAX_ALLOWED >= GLIB_VERSION_2_38 */
|
|
|
|
/* Added for _G_DEFINE_TYPE_EXTENDED_WITH_PRELUDE */
|
|
#define _G_DEFINE_TYPE_EXTENDED_BEGIN_PRE(TypeName, type_name, TYPE_PARENT) \
|
|
\
|
|
static void type_name##_init (TypeName *self); \
|
|
static void type_name##_class_init (TypeName##Class *klass); \
|
|
static GType type_name##_get_type_once (void); \
|
|
static gpointer type_name##_parent_class = NULL; \
|
|
static gint TypeName##_private_offset; \
|
|
\
|
|
_G_DEFINE_TYPE_EXTENDED_CLASS_INIT(TypeName, type_name) \
|
|
\
|
|
G_GNUC_UNUSED \
|
|
static inline gpointer \
|
|
type_name##_get_instance_private (TypeName *self) \
|
|
{ \
|
|
return (G_STRUCT_MEMBER_P (self, TypeName##_private_offset)); \
|
|
} \
|
|
\
|
|
GType \
|
|
type_name##_get_type (void) \
|
|
{ \
|
|
static gsize static_g_define_type_id = 0;
|
|
/* Prelude goes here */
|
|
|
|
/* Added for _G_DEFINE_TYPE_EXTENDED_WITH_PRELUDE */
|
|
#define _G_DEFINE_TYPE_EXTENDED_BEGIN_REGISTER(TypeName, type_name, TYPE_PARENT, flags) \
|
|
if (g_once_init_enter (&static_g_define_type_id)) \
|
|
{ \
|
|
GType g_define_type_id = type_name##_get_type_once (); \
|
|
g_once_init_leave (&static_g_define_type_id, g_define_type_id); \
|
|
} \
|
|
return static_g_define_type_id; \
|
|
} /* closes type_name##_get_type() */ \
|
|
\
|
|
G_GNUC_NO_INLINE \
|
|
static GType \
|
|
type_name##_get_type_once (void) \
|
|
{ \
|
|
GType g_define_type_id = \
|
|
g_type_register_static_simple (TYPE_PARENT, \
|
|
g_intern_static_string (#TypeName), \
|
|
sizeof (TypeName##Class), \
|
|
(GClassInitFunc)(void (*)(void)) type_name##_class_intern_init, \
|
|
sizeof (TypeName), \
|
|
(GInstanceInitFunc)(void (*)(void)) type_name##_init, \
|
|
(GTypeFlags) flags); \
|
|
{ /* custom code follows */
|
|
#define _G_DEFINE_TYPE_EXTENDED_END() \
|
|
/* following custom code */ \
|
|
} \
|
|
return g_define_type_id; \
|
|
} /* closes type_name##_get_type_once() */
|
|
|
|
/* This was defined before we had G_DEFINE_TYPE_WITH_CODE_AND_PRELUDE, it's simplest
|
|
* to keep it.
|
|
*/
|
|
#define _G_DEFINE_TYPE_EXTENDED_BEGIN(TypeName, type_name, TYPE_PARENT, flags) \
|
|
_G_DEFINE_TYPE_EXTENDED_BEGIN_PRE(TypeName, type_name, TYPE_PARENT) \
|
|
_G_DEFINE_TYPE_EXTENDED_BEGIN_REGISTER(TypeName, type_name, TYPE_PARENT, flags) \
|
|
|
|
#define _G_DEFINE_INTERFACE_EXTENDED_BEGIN(TypeName, type_name, TYPE_PREREQ) \
|
|
\
|
|
static void type_name##_default_init (TypeName##Interface *klass); \
|
|
\
|
|
GType \
|
|
type_name##_get_type (void) \
|
|
{ \
|
|
static gsize static_g_define_type_id = 0; \
|
|
if (g_once_init_enter (&static_g_define_type_id)) \
|
|
{ \
|
|
GType g_define_type_id = \
|
|
g_type_register_static_simple (G_TYPE_INTERFACE, \
|
|
g_intern_static_string (#TypeName), \
|
|
sizeof (TypeName##Interface), \
|
|
(GClassInitFunc)(void (*)(void)) type_name##_default_init, \
|
|
0, \
|
|
(GInstanceInitFunc)NULL, \
|
|
(GTypeFlags) 0); \
|
|
if (TYPE_PREREQ != G_TYPE_INVALID) \
|
|
g_type_interface_add_prerequisite (g_define_type_id, TYPE_PREREQ); \
|
|
{ /* custom code follows */
|
|
#define _G_DEFINE_INTERFACE_EXTENDED_END() \
|
|
/* following custom code */ \
|
|
} \
|
|
g_once_init_leave (&static_g_define_type_id, g_define_type_id); \
|
|
} \
|
|
return static_g_define_type_id; \
|
|
} /* closes type_name##_get_type() */
|
|
|
|
/**
|
|
* G_DEFINE_BOXED_TYPE:
|
|
* @TypeName: The name of the new type, in Camel case
|
|
* @type_name: The name of the new type, in lowercase, with words
|
|
* separated by `_`
|
|
* @copy_func: the #GBoxedCopyFunc for the new type
|
|
* @free_func: the #GBoxedFreeFunc for the new type
|
|
*
|
|
* A convenience macro for boxed type implementations, which defines a
|
|
* type_name_get_type() function registering the boxed type.
|
|
*
|
|
* Since: 2.26
|
|
*/
|
|
#define G_DEFINE_BOXED_TYPE(TypeName, type_name, copy_func, free_func) G_DEFINE_BOXED_TYPE_WITH_CODE (TypeName, type_name, copy_func, free_func, {})
|
|
/**
|
|
* G_DEFINE_BOXED_TYPE_WITH_CODE:
|
|
* @TypeName: The name of the new type, in Camel case
|
|
* @type_name: The name of the new type, in lowercase, with words
|
|
* separated by `_`
|
|
* @copy_func: the #GBoxedCopyFunc for the new type
|
|
* @free_func: the #GBoxedFreeFunc for the new type
|
|
* @_C_: Custom code that gets inserted in the `*_get_type()` function
|
|
*
|
|
* A convenience macro for boxed type implementations.
|
|
* Similar to G_DEFINE_BOXED_TYPE(), but allows to insert custom code into the
|
|
* `type_name_get_type()` function, e.g. to register value transformations with
|
|
* g_value_register_transform_func(), for instance:
|
|
*
|
|
* |[<!-- language="C" -->
|
|
* G_DEFINE_BOXED_TYPE_WITH_CODE (GdkRectangle, gdk_rectangle,
|
|
* gdk_rectangle_copy,
|
|
* gdk_rectangle_free,
|
|
* register_rectangle_transform_funcs (g_define_type_id))
|
|
* ]|
|
|
*
|
|
* Similarly to the %G_DEFINE_TYPE family of macros, the #GType of the newly
|
|
* defined boxed type is exposed in the `g_define_type_id` variable.
|
|
*
|
|
* Since: 2.26
|
|
*/
|
|
#define G_DEFINE_BOXED_TYPE_WITH_CODE(TypeName, type_name, copy_func, free_func, _C_) _G_DEFINE_BOXED_TYPE_BEGIN (TypeName, type_name, copy_func, free_func) {_C_;} _G_DEFINE_TYPE_EXTENDED_END()
|
|
|
|
/* Only use this in non-C++ on GCC >= 2.7, except for Darwin/ppc64.
|
|
* See https://bugzilla.gnome.org/show_bug.cgi?id=647145
|
|
*/
|
|
#if !defined (__cplusplus) && (__GNUC__ > 2 || (__GNUC__ == 2 && __GNUC_MINOR__ >= 7)) && !(defined (__APPLE__) && defined (__ppc64__))
|
|
#define _G_DEFINE_BOXED_TYPE_BEGIN(TypeName, type_name, copy_func, free_func) \
|
|
static GType type_name##_get_type_once (void); \
|
|
\
|
|
GType \
|
|
type_name##_get_type (void) \
|
|
{ \
|
|
static gsize static_g_define_type_id = 0; \
|
|
if (g_once_init_enter (&static_g_define_type_id)) \
|
|
{ \
|
|
GType g_define_type_id = type_name##_get_type_once (); \
|
|
g_once_init_leave (&static_g_define_type_id, g_define_type_id); \
|
|
} \
|
|
return static_g_define_type_id; \
|
|
} \
|
|
\
|
|
G_GNUC_NO_INLINE \
|
|
static GType \
|
|
type_name##_get_type_once (void) \
|
|
{ \
|
|
GType (* _g_register_boxed) \
|
|
(const gchar *, \
|
|
union \
|
|
{ \
|
|
TypeName * (*do_copy_type) (TypeName *); \
|
|
TypeName * (*do_const_copy_type) (const TypeName *); \
|
|
GBoxedCopyFunc do_copy_boxed; \
|
|
} __attribute__((__transparent_union__)), \
|
|
union \
|
|
{ \
|
|
void (* do_free_type) (TypeName *); \
|
|
GBoxedFreeFunc do_free_boxed; \
|
|
} __attribute__((__transparent_union__)) \
|
|
) = g_boxed_type_register_static; \
|
|
GType g_define_type_id = \
|
|
_g_register_boxed (g_intern_static_string (#TypeName), copy_func, free_func); \
|
|
{ /* custom code follows */
|
|
#else
|
|
#define _G_DEFINE_BOXED_TYPE_BEGIN(TypeName, type_name, copy_func, free_func) \
|
|
static GType type_name##_get_type_once (void); \
|
|
\
|
|
GType \
|
|
type_name##_get_type (void) \
|
|
{ \
|
|
static gsize static_g_define_type_id = 0; \
|
|
if (g_once_init_enter (&static_g_define_type_id)) \
|
|
{ \
|
|
GType g_define_type_id = type_name##_get_type_once (); \
|
|
g_once_init_leave (&static_g_define_type_id, g_define_type_id); \
|
|
} \
|
|
return static_g_define_type_id; \
|
|
} \
|
|
\
|
|
G_GNUC_NO_INLINE \
|
|
static GType \
|
|
type_name##_get_type_once (void) \
|
|
{ \
|
|
GType g_define_type_id = \
|
|
g_boxed_type_register_static (g_intern_static_string (#TypeName), \
|
|
(GBoxedCopyFunc) copy_func, \
|
|
(GBoxedFreeFunc) free_func); \
|
|
{ /* custom code follows */
|
|
#endif /* __GNUC__ */
|
|
|
|
/**
|
|
* G_DEFINE_POINTER_TYPE:
|
|
* @TypeName: The name of the new type, in Camel case
|
|
* @type_name: The name of the new type, in lowercase, with words
|
|
* separated by `_`
|
|
*
|
|
* A convenience macro for pointer type implementations, which defines a
|
|
* `type_name_get_type()` function registering the pointer type.
|
|
*
|
|
* Since: 2.26
|
|
*/
|
|
#define G_DEFINE_POINTER_TYPE(TypeName, type_name) G_DEFINE_POINTER_TYPE_WITH_CODE (TypeName, type_name, {})
|
|
/**
|
|
* G_DEFINE_POINTER_TYPE_WITH_CODE:
|
|
* @TypeName: The name of the new type, in Camel case
|
|
* @type_name: The name of the new type, in lowercase, with words
|
|
* separated by `_`
|
|
* @_C_: Custom code that gets inserted in the `*_get_type()` function
|
|
*
|
|
* A convenience macro for pointer type implementations.
|
|
* Similar to G_DEFINE_POINTER_TYPE(), but allows to insert
|
|
* custom code into the `type_name_get_type()` function.
|
|
*
|
|
* Since: 2.26
|
|
*/
|
|
#define G_DEFINE_POINTER_TYPE_WITH_CODE(TypeName, type_name, _C_) _G_DEFINE_POINTER_TYPE_BEGIN (TypeName, type_name) {_C_;} _G_DEFINE_TYPE_EXTENDED_END()
|
|
|
|
#define _G_DEFINE_POINTER_TYPE_BEGIN(TypeName, type_name) \
|
|
static GType type_name##_get_type_once (void); \
|
|
\
|
|
GType \
|
|
type_name##_get_type (void) \
|
|
{ \
|
|
static gsize static_g_define_type_id = 0; \
|
|
if (g_once_init_enter (&static_g_define_type_id)) \
|
|
{ \
|
|
GType g_define_type_id = type_name##_get_type_once (); \
|
|
g_once_init_leave (&static_g_define_type_id, g_define_type_id); \
|
|
} \
|
|
return static_g_define_type_id; \
|
|
} \
|
|
\
|
|
G_GNUC_NO_INLINE \
|
|
static GType \
|
|
type_name##_get_type_once (void) \
|
|
{ \
|
|
GType g_define_type_id = \
|
|
g_pointer_type_register_static (g_intern_static_string (#TypeName)); \
|
|
{ /* custom code follows */
|
|
|
|
/* --- protected (for fundamental type implementations) --- */
|
|
GLIB_AVAILABLE_IN_ALL
|
|
GTypePlugin* g_type_get_plugin (GType type);
|
|
GLIB_AVAILABLE_IN_ALL
|
|
GTypePlugin* g_type_interface_get_plugin (GType instance_type,
|
|
GType interface_type);
|
|
GLIB_AVAILABLE_IN_ALL
|
|
GType g_type_fundamental_next (void);
|
|
GLIB_AVAILABLE_IN_ALL
|
|
GType g_type_fundamental (GType type_id);
|
|
GLIB_AVAILABLE_IN_ALL
|
|
GTypeInstance* g_type_create_instance (GType type);
|
|
GLIB_AVAILABLE_IN_ALL
|
|
void g_type_free_instance (GTypeInstance *instance);
|
|
|
|
GLIB_AVAILABLE_IN_ALL
|
|
void g_type_add_class_cache_func (gpointer cache_data,
|
|
GTypeClassCacheFunc cache_func);
|
|
GLIB_AVAILABLE_IN_ALL
|
|
void g_type_remove_class_cache_func (gpointer cache_data,
|
|
GTypeClassCacheFunc cache_func);
|
|
GLIB_AVAILABLE_IN_ALL
|
|
void g_type_class_unref_uncached (gpointer g_class);
|
|
|
|
GLIB_AVAILABLE_IN_ALL
|
|
void g_type_add_interface_check (gpointer check_data,
|
|
GTypeInterfaceCheckFunc check_func);
|
|
GLIB_AVAILABLE_IN_ALL
|
|
void g_type_remove_interface_check (gpointer check_data,
|
|
GTypeInterfaceCheckFunc check_func);
|
|
|
|
GLIB_AVAILABLE_IN_ALL
|
|
GTypeValueTable* g_type_value_table_peek (GType type);
|
|
|
|
|
|
/*< private >*/
|
|
GLIB_AVAILABLE_IN_ALL
|
|
gboolean g_type_check_instance (GTypeInstance *instance) G_GNUC_PURE;
|
|
GLIB_AVAILABLE_IN_ALL
|
|
GTypeInstance* g_type_check_instance_cast (GTypeInstance *instance,
|
|
GType iface_type);
|
|
GLIB_AVAILABLE_IN_ALL
|
|
gboolean g_type_check_instance_is_a (GTypeInstance *instance,
|
|
GType iface_type) G_GNUC_PURE;
|
|
GLIB_AVAILABLE_IN_2_42
|
|
gboolean g_type_check_instance_is_fundamentally_a (GTypeInstance *instance,
|
|
GType fundamental_type) G_GNUC_PURE;
|
|
GLIB_AVAILABLE_IN_ALL
|
|
GTypeClass* g_type_check_class_cast (GTypeClass *g_class,
|
|
GType is_a_type);
|
|
GLIB_AVAILABLE_IN_ALL
|
|
gboolean g_type_check_class_is_a (GTypeClass *g_class,
|
|
GType is_a_type) G_GNUC_PURE;
|
|
GLIB_AVAILABLE_IN_ALL
|
|
gboolean g_type_check_is_value_type (GType type) G_GNUC_CONST;
|
|
GLIB_AVAILABLE_IN_ALL
|
|
gboolean g_type_check_value (const GValue *value) G_GNUC_PURE;
|
|
GLIB_AVAILABLE_IN_ALL
|
|
gboolean g_type_check_value_holds (const GValue *value,
|
|
GType type) G_GNUC_PURE;
|
|
GLIB_AVAILABLE_IN_ALL
|
|
gboolean g_type_test_flags (GType type,
|
|
guint flags) G_GNUC_CONST;
|
|
|
|
|
|
/* --- debugging functions --- */
|
|
GLIB_AVAILABLE_IN_ALL
|
|
const gchar * g_type_name_from_instance (GTypeInstance *instance);
|
|
GLIB_AVAILABLE_IN_ALL
|
|
const gchar * g_type_name_from_class (GTypeClass *g_class);
|
|
|
|
|
|
/* --- implementation bits --- */
|
|
#ifndef G_DISABLE_CAST_CHECKS
|
|
# define _G_TYPE_CIC(ip, gt, ct) \
|
|
((ct*) g_type_check_instance_cast ((GTypeInstance*) ip, gt))
|
|
# define _G_TYPE_CCC(cp, gt, ct) \
|
|
((ct*) g_type_check_class_cast ((GTypeClass*) cp, gt))
|
|
#else /* G_DISABLE_CAST_CHECKS */
|
|
# define _G_TYPE_CIC(ip, gt, ct) ((ct*) ip)
|
|
# define _G_TYPE_CCC(cp, gt, ct) ((ct*) cp)
|
|
#endif /* G_DISABLE_CAST_CHECKS */
|
|
#define _G_TYPE_CHI(ip) (g_type_check_instance ((GTypeInstance*) ip))
|
|
#define _G_TYPE_CHV(vl) (g_type_check_value ((GValue*) vl))
|
|
#define _G_TYPE_IGC(ip, gt, ct) ((ct*) (((GTypeInstance*) ip)->g_class))
|
|
#define _G_TYPE_IGI(ip, gt, ct) ((ct*) g_type_interface_peek (((GTypeInstance*) ip)->g_class, gt))
|
|
#define _G_TYPE_CIFT(ip, ft) (g_type_check_instance_is_fundamentally_a ((GTypeInstance*) ip, ft))
|
|
#ifdef __GNUC__
|
|
# define _G_TYPE_CIT(ip, gt) (G_GNUC_EXTENSION ({ \
|
|
GTypeInstance *__inst = (GTypeInstance*) ip; GType __t = gt; gboolean __r; \
|
|
if (!__inst) \
|
|
__r = FALSE; \
|
|
else if (__inst->g_class && __inst->g_class->g_type == __t) \
|
|
__r = TRUE; \
|
|
else \
|
|
__r = g_type_check_instance_is_a (__inst, __t); \
|
|
__r; \
|
|
}))
|
|
# define _G_TYPE_CCT(cp, gt) (G_GNUC_EXTENSION ({ \
|
|
GTypeClass *__class = (GTypeClass*) cp; GType __t = gt; gboolean __r; \
|
|
if (!__class) \
|
|
__r = FALSE; \
|
|
else if (__class->g_type == __t) \
|
|
__r = TRUE; \
|
|
else \
|
|
__r = g_type_check_class_is_a (__class, __t); \
|
|
__r; \
|
|
}))
|
|
# define _G_TYPE_CVH(vl, gt) (G_GNUC_EXTENSION ({ \
|
|
const GValue *__val = (const GValue*) vl; GType __t = gt; gboolean __r; \
|
|
if (!__val) \
|
|
__r = FALSE; \
|
|
else if (__val->g_type == __t) \
|
|
__r = TRUE; \
|
|
else \
|
|
__r = g_type_check_value_holds (__val, __t); \
|
|
__r; \
|
|
}))
|
|
#else /* !__GNUC__ */
|
|
# define _G_TYPE_CIT(ip, gt) (g_type_check_instance_is_a ((GTypeInstance*) ip, gt))
|
|
# define _G_TYPE_CCT(cp, gt) (g_type_check_class_is_a ((GTypeClass*) cp, gt))
|
|
# define _G_TYPE_CVH(vl, gt) (g_type_check_value_holds ((const GValue*) vl, gt))
|
|
#endif /* !__GNUC__ */
|
|
/**
|
|
* G_TYPE_FLAG_RESERVED_ID_BIT:
|
|
*
|
|
* A bit in the type number that's supposed to be left untouched.
|
|
*/
|
|
#define G_TYPE_FLAG_RESERVED_ID_BIT ((GType) (1 << 0))
|
|
|
|
G_END_DECLS
|
|
|
|
#endif /* __G_TYPE_H__ */
|