glib/gobject/genums.h
changeset 18 47c74d1534e1
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/glib/gobject/genums.h	Fri Apr 16 16:46:38 2010 +0300
@@ -0,0 +1,261 @@
+/* GObject - GLib Type, Object, Parameter and Signal Library
+ * Copyright (C) 1998-1999, 2000-2001 Tim Janik and Red Hat, Inc.
+ * Portions copyright (c) 2006-2009 Nokia Corporation.  All rights reserved.
+ * 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.
+ */
+#if !defined (__GLIB_GOBJECT_H_INSIDE__) && !defined (GOBJECT_COMPILATION)
+#error "Only <glib-object.h> can be included directly."
+#endif
+
+#ifndef __G_ENUMS_H__
+#define __G_ENUMS_H__
+
+#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 --- */
+IMPORT_C GEnumValue*	g_enum_get_value		(GEnumClass	*enum_class,
+						 gint		 value);
+IMPORT_C GEnumValue*	g_enum_get_value_by_name	(GEnumClass	*enum_class,
+						 const gchar	*name);
+IMPORT_C GEnumValue*	g_enum_get_value_by_nick	(GEnumClass	*enum_class,
+						 const gchar	*nick);
+IMPORT_C GFlagsValue*	g_flags_get_first_value		(GFlagsClass	*flags_class,
+						 guint		 value);
+IMPORT_C GFlagsValue*	g_flags_get_value_by_name	(GFlagsClass	*flags_class,
+						 const gchar	*name);
+IMPORT_C GFlagsValue*	g_flags_get_value_by_nick	(GFlagsClass	*flags_class,
+						 const gchar	*nick);
+IMPORT_C void            g_value_set_enum        	(GValue         *value,
+						 gint            v_enum);
+IMPORT_C gint            g_value_get_enum        	(const GValue   *value);
+IMPORT_C void            g_value_set_flags       	(GValue         *value,
+						 guint           v_flags);
+IMPORT_C 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!
+ */
+IMPORT_C GType	g_enum_register_static	   (const gchar	      *name,
+				    const GEnumValue  *const_static_values);
+IMPORT_C 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
+ */
+IMPORT_C void	g_enum_complete_type_info  (GType	       g_enum_type,
+				    GTypeInfo	      *info,
+				    const GEnumValue  *const_values);
+IMPORT_C void	g_flags_complete_type_info (GType	       g_flags_type,
+				    GTypeInfo	      *info,
+				    const GFlagsValue *const_values);
+
+G_END_DECLS
+
+#endif /* __G_ENUMS_H__ */