Import Upstream version 2.72.4
This commit is contained in:
evinadmin
commit
4ef3ff9793
2003 changed files with 1332420 additions and 0 deletions
760
gobject/genums.c
Normal file
760
gobject/genums.c
Normal file
|
|
@ -0,0 +1,760 @@
|
|||
/* 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/>.
|
||||
*/
|
||||
|
||||
/*
|
||||
* MT safe
|
||||
*/
|
||||
|
||||
#include "config.h"
|
||||
|
||||
#include <string.h>
|
||||
|
||||
#include "genums.h"
|
||||
#include "gtype-private.h"
|
||||
#include "gvalue.h"
|
||||
#include "gvaluecollector.h"
|
||||
|
||||
|
||||
/**
|
||||
* SECTION:enumerations_flags
|
||||
* @short_description: Enumeration and flags types
|
||||
* @title: Enumeration and Flag Types
|
||||
* @see_also:#GParamSpecEnum, #GParamSpecFlags, g_param_spec_enum(),
|
||||
* g_param_spec_flags()
|
||||
*
|
||||
* 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 [glib-mkenums][glib-mkenums],
|
||||
* that can construct suitable type registration functions from C enumeration
|
||||
* definitions.
|
||||
*
|
||||
* Example of how to get a string representation of an enum value:
|
||||
* |[<!-- language="C" -->
|
||||
* GEnumClass *enum_class;
|
||||
* GEnumValue *enum_value;
|
||||
*
|
||||
* enum_class = g_type_class_ref (MAMAN_TYPE_MY_ENUM);
|
||||
* enum_value = g_enum_get_value (enum_class, MAMAN_MY_ENUM_FOO);
|
||||
*
|
||||
* g_print ("Name: %s\n", enum_value->value_name);
|
||||
*
|
||||
* g_type_class_unref (enum_class);
|
||||
* ]|
|
||||
*/
|
||||
|
||||
|
||||
/* --- prototypes --- */
|
||||
static void g_enum_class_init (GEnumClass *class,
|
||||
gpointer class_data);
|
||||
static void g_flags_class_init (GFlagsClass *class,
|
||||
gpointer class_data);
|
||||
static void value_flags_enum_init (GValue *value);
|
||||
static void value_flags_enum_copy_value (const GValue *src_value,
|
||||
GValue *dest_value);
|
||||
static gchar* value_flags_enum_collect_value (GValue *value,
|
||||
guint n_collect_values,
|
||||
GTypeCValue *collect_values,
|
||||
guint collect_flags);
|
||||
static gchar* value_flags_enum_lcopy_value (const GValue *value,
|
||||
guint n_collect_values,
|
||||
GTypeCValue *collect_values,
|
||||
guint collect_flags);
|
||||
|
||||
/* --- functions --- */
|
||||
void
|
||||
_g_enum_types_init (void)
|
||||
{
|
||||
static gboolean initialized = FALSE;
|
||||
static const GTypeValueTable flags_enum_value_table = {
|
||||
value_flags_enum_init, /* value_init */
|
||||
NULL, /* value_free */
|
||||
value_flags_enum_copy_value, /* value_copy */
|
||||
NULL, /* value_peek_pointer */
|
||||
"i", /* collect_format */
|
||||
value_flags_enum_collect_value, /* collect_value */
|
||||
"p", /* lcopy_format */
|
||||
value_flags_enum_lcopy_value, /* lcopy_value */
|
||||
};
|
||||
GTypeInfo info = {
|
||||
0, /* class_size */
|
||||
NULL, /* base_init */
|
||||
NULL, /* base_destroy */
|
||||
NULL, /* class_init */
|
||||
NULL, /* class_destroy */
|
||||
NULL, /* class_data */
|
||||
0, /* instance_size */
|
||||
0, /* n_preallocs */
|
||||
NULL, /* instance_init */
|
||||
&flags_enum_value_table, /* value_table */
|
||||
};
|
||||
static const GTypeFundamentalInfo finfo = {
|
||||
G_TYPE_FLAG_CLASSED | G_TYPE_FLAG_DERIVABLE,
|
||||
};
|
||||
GType type G_GNUC_UNUSED /* when compiling with G_DISABLE_ASSERT */;
|
||||
|
||||
g_return_if_fail (initialized == FALSE);
|
||||
initialized = TRUE;
|
||||
|
||||
/* G_TYPE_ENUM
|
||||
*/
|
||||
info.class_size = sizeof (GEnumClass);
|
||||
type = g_type_register_fundamental (G_TYPE_ENUM, g_intern_static_string ("GEnum"), &info, &finfo,
|
||||
G_TYPE_FLAG_ABSTRACT | G_TYPE_FLAG_VALUE_ABSTRACT);
|
||||
g_assert (type == G_TYPE_ENUM);
|
||||
|
||||
/* G_TYPE_FLAGS
|
||||
*/
|
||||
info.class_size = sizeof (GFlagsClass);
|
||||
type = g_type_register_fundamental (G_TYPE_FLAGS, g_intern_static_string ("GFlags"), &info, &finfo,
|
||||
G_TYPE_FLAG_ABSTRACT | G_TYPE_FLAG_VALUE_ABSTRACT);
|
||||
g_assert (type == G_TYPE_FLAGS);
|
||||
}
|
||||
|
||||
static void
|
||||
value_flags_enum_init (GValue *value)
|
||||
{
|
||||
value->data[0].v_long = 0;
|
||||
}
|
||||
|
||||
static void
|
||||
value_flags_enum_copy_value (const GValue *src_value,
|
||||
GValue *dest_value)
|
||||
{
|
||||
dest_value->data[0].v_long = src_value->data[0].v_long;
|
||||
}
|
||||
|
||||
static gchar*
|
||||
value_flags_enum_collect_value (GValue *value,
|
||||
guint n_collect_values,
|
||||
GTypeCValue *collect_values,
|
||||
guint collect_flags)
|
||||
{
|
||||
if (G_VALUE_HOLDS_ENUM (value))
|
||||
value->data[0].v_long = collect_values[0].v_int;
|
||||
else
|
||||
value->data[0].v_ulong = (guint) collect_values[0].v_int;
|
||||
|
||||
return NULL;
|
||||
}
|
||||
|
||||
static gchar*
|
||||
value_flags_enum_lcopy_value (const GValue *value,
|
||||
guint n_collect_values,
|
||||
GTypeCValue *collect_values,
|
||||
guint collect_flags)
|
||||
{
|
||||
gint *int_p = collect_values[0].v_pointer;
|
||||
|
||||
g_return_val_if_fail (int_p != NULL, g_strdup_printf ("value location for '%s' passed as NULL", G_VALUE_TYPE_NAME (value)));
|
||||
|
||||
*int_p = value->data[0].v_long;
|
||||
|
||||
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 [glib-mkenums][glib-mkenums],
|
||||
* 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)
|
||||
{
|
||||
GTypeInfo enum_type_info = {
|
||||
sizeof (GEnumClass), /* class_size */
|
||||
NULL, /* base_init */
|
||||
NULL, /* base_finalize */
|
||||
(GClassInitFunc) g_enum_class_init,
|
||||
NULL, /* class_finalize */
|
||||
NULL, /* class_data */
|
||||
0, /* instance_size */
|
||||
0, /* n_preallocs */
|
||||
NULL, /* instance_init */
|
||||
NULL, /* value_table */
|
||||
};
|
||||
GType type;
|
||||
|
||||
g_return_val_if_fail (name != NULL, 0);
|
||||
g_return_val_if_fail (const_static_values != NULL, 0);
|
||||
|
||||
enum_type_info.class_data = const_static_values;
|
||||
|
||||
type = g_type_register_static (G_TYPE_ENUM, name, &enum_type_info, 0);
|
||||
|
||||
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 [glib-mkenums][glib-mkenums]
|
||||
* 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)
|
||||
{
|
||||
GTypeInfo flags_type_info = {
|
||||
sizeof (GFlagsClass), /* class_size */
|
||||
NULL, /* base_init */
|
||||
NULL, /* base_finalize */
|
||||
(GClassInitFunc) g_flags_class_init,
|
||||
NULL, /* class_finalize */
|
||||
NULL, /* class_data */
|
||||
0, /* instance_size */
|
||||
0, /* n_preallocs */
|
||||
NULL, /* instance_init */
|
||||
NULL, /* value_table */
|
||||
};
|
||||
GType type;
|
||||
|
||||
g_return_val_if_fail (name != NULL, 0);
|
||||
g_return_val_if_fail (const_static_values != NULL, 0);
|
||||
|
||||
flags_type_info.class_data = const_static_values;
|
||||
|
||||
type = g_type_register_static (G_TYPE_FLAGS, name, &flags_type_info, 0);
|
||||
|
||||
return type;
|
||||
}
|
||||
|
||||
/**
|
||||
* g_enum_complete_type_info:
|
||||
* @g_enum_type: the type identifier of the type being completed
|
||||
* @info: (out callee-allocates): 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:
|
||||
*
|
||||
* |[<!-- language="C" -->
|
||||
* 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,
|
||||
const GEnumValue *const_values)
|
||||
{
|
||||
g_return_if_fail (G_TYPE_IS_ENUM (g_enum_type));
|
||||
g_return_if_fail (info != NULL);
|
||||
g_return_if_fail (const_values != NULL);
|
||||
|
||||
info->class_size = sizeof (GEnumClass);
|
||||
info->base_init = NULL;
|
||||
info->base_finalize = NULL;
|
||||
info->class_init = (GClassInitFunc) g_enum_class_init;
|
||||
info->class_finalize = NULL;
|
||||
info->class_data = const_values;
|
||||
}
|
||||
|
||||
/**
|
||||
* g_flags_complete_type_info:
|
||||
* @g_flags_type: the type identifier of the type being completed
|
||||
* @info: (out callee-allocates): 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,
|
||||
const GFlagsValue *const_values)
|
||||
{
|
||||
g_return_if_fail (G_TYPE_IS_FLAGS (g_flags_type));
|
||||
g_return_if_fail (info != NULL);
|
||||
g_return_if_fail (const_values != NULL);
|
||||
|
||||
info->class_size = sizeof (GFlagsClass);
|
||||
info->base_init = NULL;
|
||||
info->base_finalize = NULL;
|
||||
info->class_init = (GClassInitFunc) g_flags_class_init;
|
||||
info->class_finalize = NULL;
|
||||
info->class_data = const_values;
|
||||
}
|
||||
|
||||
static void
|
||||
g_enum_class_init (GEnumClass *class,
|
||||
gpointer class_data)
|
||||
{
|
||||
g_return_if_fail (G_IS_ENUM_CLASS (class));
|
||||
|
||||
class->minimum = 0;
|
||||
class->maximum = 0;
|
||||
class->n_values = 0;
|
||||
class->values = class_data;
|
||||
|
||||
if (class->values)
|
||||
{
|
||||
GEnumValue *values;
|
||||
|
||||
class->minimum = class->values->value;
|
||||
class->maximum = class->values->value;
|
||||
for (values = class->values; values->value_name; values++)
|
||||
{
|
||||
class->minimum = MIN (class->minimum, values->value);
|
||||
class->maximum = MAX (class->maximum, values->value);
|
||||
class->n_values++;
|
||||
}
|
||||
}
|
||||
}
|
||||
|
||||
static void
|
||||
g_flags_class_init (GFlagsClass *class,
|
||||
gpointer class_data)
|
||||
{
|
||||
g_return_if_fail (G_IS_FLAGS_CLASS (class));
|
||||
|
||||
class->mask = 0;
|
||||
class->n_values = 0;
|
||||
class->values = class_data;
|
||||
|
||||
if (class->values)
|
||||
{
|
||||
GFlagsValue *values;
|
||||
|
||||
for (values = class->values; values->value_name; values++)
|
||||
{
|
||||
class->mask |= values->value;
|
||||
class->n_values++;
|
||||
}
|
||||
}
|
||||
}
|
||||
|
||||
/**
|
||||
* g_enum_get_value_by_name:
|
||||
* @enum_class: a #GEnumClass
|
||||
* @name: the name to look up
|
||||
*
|
||||
* Looks up a #GEnumValue by name.
|
||||
*
|
||||
* Returns: (transfer none) (nullable): 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)
|
||||
{
|
||||
g_return_val_if_fail (G_IS_ENUM_CLASS (enum_class), NULL);
|
||||
g_return_val_if_fail (name != NULL, NULL);
|
||||
|
||||
if (enum_class->n_values)
|
||||
{
|
||||
GEnumValue *enum_value;
|
||||
|
||||
for (enum_value = enum_class->values; enum_value->value_name; enum_value++)
|
||||
if (strcmp (name, enum_value->value_name) == 0)
|
||||
return enum_value;
|
||||
}
|
||||
|
||||
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: (transfer none) (nullable): 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)
|
||||
{
|
||||
g_return_val_if_fail (G_IS_FLAGS_CLASS (flags_class), NULL);
|
||||
g_return_val_if_fail (name != NULL, NULL);
|
||||
|
||||
if (flags_class->n_values)
|
||||
{
|
||||
GFlagsValue *flags_value;
|
||||
|
||||
for (flags_value = flags_class->values; flags_value->value_name; flags_value++)
|
||||
if (strcmp (name, flags_value->value_name) == 0)
|
||||
return flags_value;
|
||||
}
|
||||
|
||||
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: (transfer none) (nullable): 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)
|
||||
{
|
||||
g_return_val_if_fail (G_IS_ENUM_CLASS (enum_class), NULL);
|
||||
g_return_val_if_fail (nick != NULL, NULL);
|
||||
|
||||
if (enum_class->n_values)
|
||||
{
|
||||
GEnumValue *enum_value;
|
||||
|
||||
for (enum_value = enum_class->values; enum_value->value_name; enum_value++)
|
||||
if (enum_value->value_nick && strcmp (nick, enum_value->value_nick) == 0)
|
||||
return enum_value;
|
||||
}
|
||||
|
||||
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: (transfer none) (nullable): 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)
|
||||
{
|
||||
g_return_val_if_fail (G_IS_FLAGS_CLASS (flags_class), NULL);
|
||||
g_return_val_if_fail (nick != NULL, NULL);
|
||||
|
||||
if (flags_class->n_values)
|
||||
{
|
||||
GFlagsValue *flags_value;
|
||||
|
||||
for (flags_value = flags_class->values; flags_value->value_nick; flags_value++)
|
||||
if (flags_value->value_nick && strcmp (nick, flags_value->value_nick) == 0)
|
||||
return flags_value;
|
||||
}
|
||||
|
||||
return NULL;
|
||||
}
|
||||
|
||||
/**
|
||||
* g_enum_get_value:
|
||||
* @enum_class: a #GEnumClass
|
||||
* @value: the value to look up
|
||||
*
|
||||
* Returns the #GEnumValue for a value.
|
||||
*
|
||||
* Returns: (transfer none) (nullable): 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)
|
||||
{
|
||||
g_return_val_if_fail (G_IS_ENUM_CLASS (enum_class), NULL);
|
||||
|
||||
if (enum_class->n_values)
|
||||
{
|
||||
GEnumValue *enum_value;
|
||||
|
||||
for (enum_value = enum_class->values; enum_value->value_name; enum_value++)
|
||||
if (enum_value->value == value)
|
||||
return enum_value;
|
||||
}
|
||||
|
||||
return NULL;
|
||||
}
|
||||
|
||||
/**
|
||||
* g_flags_get_first_value:
|
||||
* @flags_class: a #GFlagsClass
|
||||
* @value: the value
|
||||
*
|
||||
* Returns the first #GFlagsValue which is set in @value.
|
||||
*
|
||||
* Returns: (transfer none) (nullable): 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)
|
||||
{
|
||||
g_return_val_if_fail (G_IS_FLAGS_CLASS (flags_class), NULL);
|
||||
|
||||
if (flags_class->n_values)
|
||||
{
|
||||
GFlagsValue *flags_value;
|
||||
|
||||
if (value == 0)
|
||||
{
|
||||
for (flags_value = flags_class->values; flags_value->value_name; flags_value++)
|
||||
if (flags_value->value == 0)
|
||||
return flags_value;
|
||||
}
|
||||
else
|
||||
{
|
||||
for (flags_value = flags_class->values; flags_value->value_name; flags_value++)
|
||||
if (flags_value->value != 0 && (flags_value->value & value) == flags_value->value)
|
||||
return flags_value;
|
||||
}
|
||||
}
|
||||
|
||||
return NULL;
|
||||
}
|
||||
|
||||
/**
|
||||
* g_enum_to_string:
|
||||
* @g_enum_type: the type identifier of a #GEnumClass type
|
||||
* @value: the value
|
||||
*
|
||||
* Pretty-prints @value in the form of the enum’s name.
|
||||
*
|
||||
* This is intended to be used for debugging purposes. The format of the output
|
||||
* may change in the future.
|
||||
*
|
||||
* Returns: (transfer full): a newly-allocated text string
|
||||
*
|
||||
* Since: 2.54
|
||||
*/
|
||||
gchar *
|
||||
g_enum_to_string (GType g_enum_type,
|
||||
gint value)
|
||||
{
|
||||
gchar *result;
|
||||
GEnumClass *enum_class;
|
||||
GEnumValue *enum_value;
|
||||
|
||||
g_return_val_if_fail (G_TYPE_IS_ENUM (g_enum_type), NULL);
|
||||
|
||||
enum_class = g_type_class_ref (g_enum_type);
|
||||
|
||||
/* Already warned */
|
||||
if (enum_class == NULL)
|
||||
return g_strdup_printf ("%d", value);
|
||||
|
||||
enum_value = g_enum_get_value (enum_class, value);
|
||||
|
||||
if (enum_value == NULL)
|
||||
result = g_strdup_printf ("%d", value);
|
||||
else
|
||||
result = g_strdup (enum_value->value_name);
|
||||
|
||||
g_type_class_unref (enum_class);
|
||||
return result;
|
||||
}
|
||||
|
||||
/*
|
||||
* g_flags_get_value_string:
|
||||
* @flags_class: a #GFlagsClass
|
||||
* @value: the value
|
||||
*
|
||||
* Pretty-prints @value in the form of the flag names separated by ` | ` and
|
||||
* sorted. Any extra bits will be shown at the end as a hexadecimal number.
|
||||
*
|
||||
* This is intended to be used for debugging purposes. The format of the output
|
||||
* may change in the future.
|
||||
*
|
||||
* Returns: (transfer full): a newly-allocated text string
|
||||
*
|
||||
* Since: 2.54
|
||||
*/
|
||||
static gchar *
|
||||
g_flags_get_value_string (GFlagsClass *flags_class,
|
||||
guint value)
|
||||
{
|
||||
GString *str;
|
||||
GFlagsValue *flags_value;
|
||||
|
||||
g_return_val_if_fail (G_IS_FLAGS_CLASS (flags_class), NULL);
|
||||
|
||||
str = g_string_new (NULL);
|
||||
|
||||
while ((str->len == 0 || value != 0) &&
|
||||
(flags_value = g_flags_get_first_value (flags_class, value)) != NULL)
|
||||
{
|
||||
if (str->len > 0)
|
||||
g_string_append (str, " | ");
|
||||
|
||||
g_string_append (str, flags_value->value_name);
|
||||
|
||||
value &= ~flags_value->value;
|
||||
}
|
||||
|
||||
/* Show the extra bits */
|
||||
if (value != 0 || str->len == 0)
|
||||
{
|
||||
if (str->len > 0)
|
||||
g_string_append (str, " | ");
|
||||
|
||||
g_string_append_printf (str, "0x%x", value);
|
||||
}
|
||||
|
||||
return g_string_free (str, FALSE);
|
||||
}
|
||||
|
||||
/**
|
||||
* g_flags_to_string:
|
||||
* @flags_type: the type identifier of a #GFlagsClass type
|
||||
* @value: the value
|
||||
*
|
||||
* Pretty-prints @value in the form of the flag names separated by ` | ` and
|
||||
* sorted. Any extra bits will be shown at the end as a hexadecimal number.
|
||||
*
|
||||
* This is intended to be used for debugging purposes. The format of the output
|
||||
* may change in the future.
|
||||
*
|
||||
* Returns: (transfer full): a newly-allocated text string
|
||||
*
|
||||
* Since: 2.54
|
||||
*/
|
||||
gchar *
|
||||
g_flags_to_string (GType flags_type,
|
||||
guint value)
|
||||
{
|
||||
gchar *result;
|
||||
GFlagsClass *flags_class;
|
||||
|
||||
g_return_val_if_fail (G_TYPE_IS_FLAGS (flags_type), NULL);
|
||||
|
||||
flags_class = g_type_class_ref (flags_type);
|
||||
|
||||
/* Already warned */
|
||||
if (flags_class == NULL)
|
||||
return NULL;
|
||||
|
||||
result = g_flags_get_value_string (flags_class, value);
|
||||
|
||||
g_type_class_unref (flags_class);
|
||||
return result;
|
||||
}
|
||||
|
||||
|
||||
/**
|
||||
* g_value_set_enum:
|
||||
* @value: a valid #GValue whose type is derived from %G_TYPE_ENUM
|
||||
* @v_enum: enum value to be set
|
||||
*
|
||||
* Set the contents of a %G_TYPE_ENUM #GValue to @v_enum.
|
||||
*/
|
||||
void
|
||||
g_value_set_enum (GValue *value,
|
||||
gint v_enum)
|
||||
{
|
||||
g_return_if_fail (G_VALUE_HOLDS_ENUM (value));
|
||||
|
||||
value->data[0].v_long = v_enum;
|
||||
}
|
||||
|
||||
/**
|
||||
* g_value_get_enum:
|
||||
* @value: a valid #GValue whose type is derived from %G_TYPE_ENUM
|
||||
*
|
||||
* Get the contents of a %G_TYPE_ENUM #GValue.
|
||||
*
|
||||
* Returns: enum contents of @value
|
||||
*/
|
||||
gint
|
||||
g_value_get_enum (const GValue *value)
|
||||
{
|
||||
g_return_val_if_fail (G_VALUE_HOLDS_ENUM (value), 0);
|
||||
|
||||
return value->data[0].v_long;
|
||||
}
|
||||
|
||||
/**
|
||||
* g_value_set_flags:
|
||||
* @value: a valid #GValue whose type is derived from %G_TYPE_FLAGS
|
||||
* @v_flags: flags value to be set
|
||||
*
|
||||
* Set the contents of a %G_TYPE_FLAGS #GValue to @v_flags.
|
||||
*/
|
||||
void
|
||||
g_value_set_flags (GValue *value,
|
||||
guint v_flags)
|
||||
{
|
||||
g_return_if_fail (G_VALUE_HOLDS_FLAGS (value));
|
||||
|
||||
value->data[0].v_ulong = v_flags;
|
||||
}
|
||||
|
||||
/**
|
||||
* g_value_get_flags:
|
||||
* @value: a valid #GValue whose type is derived from %G_TYPE_FLAGS
|
||||
*
|
||||
* Get the contents of a %G_TYPE_FLAGS #GValue.
|
||||
*
|
||||
* Returns: flags contents of @value
|
||||
*/
|
||||
guint
|
||||
g_value_get_flags (const GValue *value)
|
||||
{
|
||||
g_return_val_if_fail (G_VALUE_HOLDS_FLAGS (value), 0);
|
||||
|
||||
return value->data[0].v_ulong;
|
||||
}
|
||||
Loading…
Add table
Add a link
Reference in a new issue