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authorStefan Kost <stefkost@src.gnome.org>2008-06-21 11:27:45 +0000
committerStefan Kost <stefkost@src.gnome.org>2008-06-21 11:27:45 +0000
commit672caa1a5138523516e76160de94ea2452eeada7 (patch)
treed5e983227fb432eb7adc425182867fedbe483851 /gobject/genums.c
parent86a0f779f68f31452d3293bfddcbe8fd249ab5ab (diff)
Migrating docs.
* docs/reference/gobject/tmpl/enumerations_flags.sgml: * gobject/genums.c: * gobject/genums.h: Migrating docs. svn path=/trunk/; revision=7066
Diffstat (limited to 'gobject/genums.c')
-rw-r--r--gobject/genums.c148
1 files changed, 148 insertions, 0 deletions
diff --git a/gobject/genums.c b/gobject/genums.c
index f5d2115b0..4c826a1bd 100644
--- a/gobject/genums.c
+++ b/gobject/genums.c
@@ -16,6 +16,24 @@
* Free Software Foundation, Inc., 59 Temple Place, Suite 330,
* Boston, MA 02111-1307, USA.
*/
+/**
+ * SECTION:Enums and Flags
+ * @Short_description: Enumeration and flags types
+ * @See_also:#GParamSpecEnum, #GParamSpecFlags, g_param_spec_enum(), g_param_spec_flags(),
+ * <link linkend="glib-mkenums">glib-mkenums</link>
+ *
+ * The GLib type system provides fundamental types for enumeration and flags types. (Flags types
+ * are like enumerations, but allow their values to be combined by bitwise or). A registered
+ * enumeration or flags type associates a name and a nickname with each allowed value, and
+ * the methods g_enum_get_value_by_name(), g_enum_get_value_by_nick(), g_flags_get_value_by_name()
+ * and g_flags_get_value_by_nick() can look up values by their name or nickname.
+ * When an enumeration or flags type is registered with the GLib type system, it can
+ * be used as value type for object properties, using g_param_spec_enum() or
+ * g_param_spec_flags().
+ *
+ * GObject ships with a utility called <link linkend="glib-mkenums">glib-mkenums</link> that can
+ * construct suitable type registration functions from C enumeration definitions.
+ */
/*
* MT safe
@@ -138,6 +156,22 @@ value_flags_enum_lcopy_value (const GValue *value,
return NULL;
}
+/**
+ * g_enum_register_static:
+ * @name: A nul-terminated string used as the name of the new type.
+ * @const_static_values: An array of #GEnumValue structs for the possible
+ * enumeration values. The array is terminated by a struct with all
+ * members being 0. GObject keeps a reference to the data, so it cannot
+ * be stack-allocated.
+ *
+ * Registers a new static enumeration type with the name @name.
+ *
+ * It is normally more convenient to let <link linkend="glib-mkenums">glib-mkenums</link>
+ * generate a my_enum_get_type() function from a usual C enumeration definition
+ * than to write one yourself using g_enum_register_static().
+ *
+ * Returns: The new type identifier.
+ */
GType
g_enum_register_static (const gchar *name,
const GEnumValue *const_static_values)
@@ -166,6 +200,21 @@ g_enum_register_static (const gchar *name,
return type;
}
+/**
+ * g_flags_register_static:
+ * @name: A nul-terminated string used as the name of the new type.
+ * @const_static_values: An array of #GFlagsValue structs for the possible
+ * flags values. The array is terminated by a struct with all members being 0.
+ * GObject keeps a reference to the data, so it cannot be stack-allocated.
+ *
+ * Registers a new static flags type with the name @name.
+ *
+ * It is normally more convenient to let <link linkend="glib-mkenums">glib-mkenums</link>
+ * generate a my_flags_get_type() function from a usual C enumeration definition
+ * than to write one yourself using g_flags_register_static().
+ *
+ * Returns: The new type identifier.
+ */
GType
g_flags_register_static (const gchar *name,
const GFlagsValue *const_static_values)
@@ -194,6 +243,34 @@ g_flags_register_static (const gchar *name,
return type;
}
+/**
+ * g_enum_complete_type_info:
+ * @g_enum_type: the type identifier of the type being completed
+ * @info: the #GTypeInfo struct to be filled in
+ * @const_values: An array of #GEnumValue structs for the possible
+ * enumeration values. The array is terminated by a struct with all
+ * members being 0.
+ *
+ * This function is meant to be called from the complete_type_info() function
+ * of a #GTypePlugin implementation, as in the following example:
+ *
+ * |[
+ * static void
+ * my_enum_complete_type_info (GTypePlugin *plugin,
+ * GType g_type,
+ * GTypeInfo *info,
+ * GTypeValueTable *value_table)
+ * {
+ * static const GEnumValue values[] = {
+ * { MY_ENUM_FOO, "MY_ENUM_FOO", "foo" },
+ * { MY_ENUM_BAR, "MY_ENUM_BAR", "bar" },
+ * { 0, NULL, NULL }
+ * };
+ *
+ * g_enum_complete_type_info (type, info, values);
+ * }
+ * ]|
+ */
void
g_enum_complete_type_info (GType g_enum_type,
GTypeInfo *info,
@@ -211,6 +288,18 @@ g_enum_complete_type_info (GType g_enum_type,
info->class_data = const_values;
}
+/**
+ * g_flags_complete_type_info:
+ * @g_flags_type: the type identifier of the type being completed
+ * @info: the #GTypeInfo struct to be filled in
+ * @const_values: An array of #GFlagsValue structs for the possible
+ * enumeration values. The array is terminated by a struct with all
+ * members being 0.
+ *
+ * This function is meant to be called from the complete_type_info() function
+ * of a #GTypePlugin implementation, see the example for
+ * g_enum_complete_type_info() above.
+ */
void
g_flags_complete_type_info (GType g_flags_type,
GTypeInfo *info,
@@ -276,6 +365,16 @@ g_flags_class_init (GFlagsClass *class,
}
}
+/**
+ * g_enum_get_value_by_name:
+ * @enum_class: a #GEnumClass
+ * @name: the name to look up
+ *
+ * Looks up a #GEnumValue by name.
+ *
+ * Returns: the #GEnumValue with name @name, or %NULL if the enumeration doesn'
+ * t have a member with that name
+ */
GEnumValue*
g_enum_get_value_by_name (GEnumClass *enum_class,
const gchar *name)
@@ -295,6 +394,16 @@ g_enum_get_value_by_name (GEnumClass *enum_class,
return NULL;
}
+/**
+ * g_flags_get_value_by_name:
+ * @flags_class: a #GFlagsClass
+ * @name: the name to look up
+ *
+ * Looks up a #GFlagsValue by name.
+ *
+ * Returns: the #GFlagsValue with name @name, or %NULL if there is no flag with
+ * that name
+ */
GFlagsValue*
g_flags_get_value_by_name (GFlagsClass *flags_class,
const gchar *name)
@@ -314,6 +423,16 @@ g_flags_get_value_by_name (GFlagsClass *flags_class,
return NULL;
}
+/**
+ * g_enum_get_value_by_nick:
+ * @enum_class: a #GEnumClass
+ * @nick: the nickname to look up
+ *
+ * Looks up a #GEnumValue by nickname.
+ *
+ * Returns: the #GEnumValue with nickname @nick, or %NULL if the enumeration doesn'
+ * t have a member with that nickname
+ */
GEnumValue*
g_enum_get_value_by_nick (GEnumClass *enum_class,
const gchar *nick)
@@ -333,6 +452,16 @@ g_enum_get_value_by_nick (GEnumClass *enum_class,
return NULL;
}
+/**
+ * g_flags_get_value_by_nick:
+ * @flags_class: a #GFlagsClass
+ * @nick: the nickname to look up
+ *
+ * Looks up a #GFlagsValue by nickname.
+ *
+ * Returns: the #GFlagsValue with nickname @nick, or %NULL if there is no flag
+ * with that nickname
+ */
GFlagsValue*
g_flags_get_value_by_nick (GFlagsClass *flags_class,
const gchar *nick)
@@ -352,6 +481,16 @@ g_flags_get_value_by_nick (GFlagsClass *flags_class,
return NULL;
}
+/**
+ * g_enum_get_value:
+ * @enum_class: a #GEnumClass
+ * @value: the value to look up
+ *
+ * Returns the #GEnumValue for a value.
+ *
+ * Returns: the #GEnumValue for @value, or %NULL if @value is not
+ * a member of the enumeration
+ */
GEnumValue*
g_enum_get_value (GEnumClass *enum_class,
gint value)
@@ -370,6 +509,15 @@ g_enum_get_value (GEnumClass *enum_class,
return NULL;
}
+/**
+ * g_flags_get_first_value:
+ * @flags_class: a #GFlagsClass
+ * @value: the value
+ *
+ * Returns the first #GFlagsValue which is set in @value.
+ *
+ * Returns: the first #GFlagsValue which is set in @value, or %NULL if none is set
+ */
GFlagsValue*
g_flags_get_first_value (GFlagsClass *flags_class,
guint value)