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/* 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 of the License, or (at your option) any later version.
*
* This library is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General
* Public License along with this library; if not, write to the
* Free Software Foundation, Inc., 59 Temple Place, Suite 330,
* Boston, MA 02111-1307, USA.
*/
#ifndef __G_ENUMS_H__
#define __G_ENUMS_H__
#if !defined (__GLIB_GOBJECT_H_INSIDE__) && !defined (GOBJECT_COMPILATION)
#error "Only <glib-object.h> can be included directly."
#endif
#include <gobject/gtype.h>
G_BEGIN_DECLS
/* --- type macros --- */
/**
* G_TYPE_IS_ENUM:
* @type: a #GType ID.
*
* Checks whether @type "is a" %G_TYPE_ENUM.
*
* Returns: %TRUE if @type "is a" %G_TYPE_ENUM.
*/
#define G_TYPE_IS_ENUM(type) (G_TYPE_FUNDAMENTAL (type) == G_TYPE_ENUM)
/**
* G_ENUM_CLASS:
* @class: a valid #GEnumClass
*
* Casts a derived #GEnumClass structure into a #GEnumClass structure.
*/
#define G_ENUM_CLASS(class) (G_TYPE_CHECK_CLASS_CAST ((class), G_TYPE_ENUM, GEnumClass))
/**
* G_IS_ENUM_CLASS:
* @class: a #GEnumClass
*
* Checks whether @class "is a" valid #GEnumClass structure of type %G_TYPE_ENUM
* or derived.
*/
#define G_IS_ENUM_CLASS(class) (G_TYPE_CHECK_CLASS_TYPE ((class), G_TYPE_ENUM))
/**
* G_ENUM_CLASS_TYPE:
* @class: a #GEnumClass
*
* Get the type identifier from a given #GEnumClass structure.
*
* Returns: the #GType
*/
#define G_ENUM_CLASS_TYPE(class) (G_TYPE_FROM_CLASS (class))
/**
* G_ENUM_CLASS_TYPE_NAME:
* @class: a #GEnumClass
*
* Get the static type name from a given #GEnumClass structure.
*
* Returns: the type name.
*/
#define G_ENUM_CLASS_TYPE_NAME(class) (g_type_name (G_ENUM_CLASS_TYPE (class)))
/**
* G_TYPE_IS_FLAGS:
* @type: a #GType ID.
*
* Checks whether @type "is a" %G_TYPE_FLAGS.
*
* Returns: %TRUE if @type "is a" %G_TYPE_FLAGS.
*/
#define G_TYPE_IS_FLAGS(type) (G_TYPE_FUNDAMENTAL (type) == G_TYPE_FLAGS)
/**
* G_FLAGS_CLASS:
* @class: a valid #GFlagsClass
*
* Casts a derived #GFlagsClass structure into a #GFlagsClass structure.
*/
#define G_FLAGS_CLASS(class) (G_TYPE_CHECK_CLASS_CAST ((class), G_TYPE_FLAGS, GFlagsClass))
/**
* G_IS_FLAGS_CLASS:
* @class: a #GFlagsClass
*
* Checks whether @class "is a" valid #GFlagsClass structure of type %G_TYPE_FLAGS
* or derived.
*/
#define G_IS_FLAGS_CLASS(class) (G_TYPE_CHECK_CLASS_TYPE ((class), G_TYPE_FLAGS))
/**
* G_FLAGS_CLASS_TYPE:
* @class: a #GFlagsClass
*
* Get the type identifier from a given #GFlagsClass structure.
*
* Returns: the #GType
*/
#define G_FLAGS_CLASS_TYPE(class) (G_TYPE_FROM_CLASS (class))
/**
* G_FLAGS_CLASS_TYPE_NAME:
* @class: a #GFlagsClass
*
* Get the static type name from a given #GFlagsClass structure.
*
* Returns: the type name.
*/
#define G_FLAGS_CLASS_TYPE_NAME(class) (g_type_name (G_FLAGS_CLASS_TYPE (class)))
/**
* G_VALUE_HOLDS_ENUM:
* @value: a valid #GValue structure
*
* Checks whether the given #GValue can hold values derived from type %G_TYPE_ENUM.
*
* Returns: %TRUE on success.
*/
#define G_VALUE_HOLDS_ENUM(value) (G_TYPE_CHECK_VALUE_TYPE ((value), G_TYPE_ENUM))
/**
* G_VALUE_HOLDS_FLAGS:
* @value: a valid #GValue structure
*
* Checks whether the given #GValue can hold values derived from type %G_TYPE_FLAGS.
*
* Returns: %TRUE on success.
*/
#define G_VALUE_HOLDS_FLAGS(value) (G_TYPE_CHECK_VALUE_TYPE ((value), G_TYPE_FLAGS))
/* --- enum/flag values & classes --- */
typedef struct _GEnumClass GEnumClass;
typedef struct _GFlagsClass GFlagsClass;
typedef struct _GEnumValue GEnumValue;
typedef struct _GFlagsValue GFlagsValue;
/**
* GEnumClass:
* @g_type_class: the parent class
* @minimum: the smallest possible value.
* @maximum: the largest possible value.
* @n_values: the number of possible values.
* @values: an array of #GEnumValue structs describing the
* individual values.
*
* The class of an enumeration type holds information about its
* possible values.
*/
struct _GEnumClass
{
GTypeClass g_type_class;
/*< public >*/
gint minimum;
gint maximum;
guint n_values;
GEnumValue *values;
};
/**
* GFlagsClass:
* @g_type_class: the parent class
* @mask: a mask covering all possible values.
* @n_values: the number of possible values.
* @values: an array of #GFlagsValue structs describing the
* individual values.
*
* The class of a flags type holds information about its
* possible values.
*/
struct _GFlagsClass
{
GTypeClass g_type_class;
/*< public >*/
guint mask;
guint n_values;
GFlagsValue *values;
};
/**
* GEnumValue:
* @value: the enum value
* @value_name: the name of the value
* @value_nick: the nickname of the value
*
* A structure which contains a single enum value, its name, and its
* nickname.
*/
struct _GEnumValue
{
gint value;
const gchar *value_name;
const gchar *value_nick;
};
/**
* GFlagsValue:
* @value: the flags value
* @value_name: the name of the value
* @value_nick: the nickname of the value
*
* A structure which contains a single flags value, its name, and its
* nickname.
*/
struct _GFlagsValue
{
guint value;
const gchar *value_name;
const gchar *value_nick;
};
/* --- prototypes --- */
GEnumValue* g_enum_get_value (GEnumClass *enum_class,
gint value);
GEnumValue* g_enum_get_value_by_name (GEnumClass *enum_class,
const gchar *name);
GEnumValue* g_enum_get_value_by_nick (GEnumClass *enum_class,
const gchar *nick);
GFlagsValue* g_flags_get_first_value (GFlagsClass *flags_class,
guint value);
GFlagsValue* g_flags_get_value_by_name (GFlagsClass *flags_class,
const gchar *name);
GFlagsValue* g_flags_get_value_by_nick (GFlagsClass *flags_class,
const gchar *nick);
void g_value_set_enum (GValue *value,
gint v_enum);
gint g_value_get_enum (const GValue *value);
void g_value_set_flags (GValue *value,
guint v_flags);
guint g_value_get_flags (const GValue *value);
/* --- registration functions --- */
/* const_static_values is a NULL terminated array of enum/flags
* values that is taken over!
*/
GType g_enum_register_static (const gchar *name,
const GEnumValue *const_static_values);
GType g_flags_register_static (const gchar *name,
const GFlagsValue *const_static_values);
/* functions to complete the type information
* for enums/flags implemented by plugins
*/
void g_enum_complete_type_info (GType g_enum_type,
GTypeInfo *info,
const GEnumValue *const_values);
void g_flags_complete_type_info (GType g_flags_type,
GTypeInfo *info,
const GFlagsValue *const_values);
G_END_DECLS
#endif /* __G_ENUMS_H__ */
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