1/* GIO - GLib Input, Output and Streaming Library
2 *
3 * Copyright (C) 2006-2007 Red Hat, Inc.
4 *
5 * SPDX-License-Identifier: LGPL-2.1-or-later
6 *
7 * This library is free software; you can redistribute it and/or
8 * modify it under the terms of the GNU Lesser General Public
9 * License as published by the Free Software Foundation; either
10 * version 2.1 of the License, or (at your option) any later version.
11 *
12 * This library is distributed in the hope that it will be useful,
13 * but WITHOUT ANY WARRANTY; without even the implied warranty of
14 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
15 * Lesser General Public License for more details.
16 *
17 * You should have received a copy of the GNU Lesser General
18 * Public License along with this library; if not, see <http://www.gnu.org/licenses/>.
19 *
20 * Author: Alexander Larsson <alexl@redhat.com>
21 */
22
23#ifndef __G_ICON_H__
24#define __G_ICON_H__
25
26#if !defined (__GIO_GIO_H_INSIDE__) && !defined (GIO_COMPILATION)
27#error "Only <gio/gio.h> can be included directly."
28#endif
29
30#include <gio/giotypes.h>
31
32G_BEGIN_DECLS
33
34#define G_TYPE_ICON (g_icon_get_type ())
35#define G_ICON(obj) (G_TYPE_CHECK_INSTANCE_CAST ((obj), G_TYPE_ICON, GIcon))
36#define G_IS_ICON(obj) (G_TYPE_CHECK_INSTANCE_TYPE ((obj), G_TYPE_ICON))
37#define G_ICON_GET_IFACE(obj) (G_TYPE_INSTANCE_GET_INTERFACE ((obj), G_TYPE_ICON, GIconIface))
38
39typedef struct _GIconIface GIconIface;
40
41/**
42 * GIconIface:
43 * @g_iface: The parent interface.
44 * @hash: A hash for a given #GIcon.
45 * @equal: Checks if two #GIcons are equal.
46 * @to_tokens: Serializes a #GIcon into tokens. The tokens must not
47 * contain any whitespace. Don't implement if the #GIcon can't be
48 * serialized (Since 2.20).
49 * @from_tokens: Constructs a #GIcon from tokens. Set the #GError if
50 * the tokens are malformed. Don't implement if the #GIcon can't be
51 * serialized (Since 2.20).
52 * @serialize: Serializes a #GIcon into a #GVariant. Since: 2.38
53 *
54 * GIconIface is used to implement GIcon types for various
55 * different systems. See #GThemedIcon and #GLoadableIcon for
56 * examples of how to implement this interface.
57 */
58struct _GIconIface
59{
60 GTypeInterface g_iface;
61
62 /* Virtual Table */
63
64 guint (* hash) (GIcon *icon);
65 gboolean (* equal) (GIcon *icon1,
66 GIcon *icon2);
67
68 /**
69 * GIconIface::to_tokens:
70 * @icon: The #GIcon
71 * @tokens: (element-type utf8) (out caller-allocates):
72 * The array to fill with tokens
73 * @out_version: (out): version of serialized tokens
74 *
75 * Serializes the @icon into string tokens.
76 * This is can be invoked when g_icon_new_for_string() is called.
77 *
78 * Returns: %TRUE if serialization took place, %FALSE otherwise
79 *
80 * Since: 2.20
81 */
82 gboolean (* to_tokens) (GIcon *icon,
83 GPtrArray *tokens,
84 gint *out_version);
85
86 /**
87 * GIconIface::from_tokens:
88 * @tokens: (array length=num_tokens): An array of tokens
89 * @num_tokens: The number of tokens in @tokens
90 * @version: Version of the serialized tokens
91 * @error: Return location for errors, or %NULL to ignore
92 *
93 * Constructs a #GIcon from a list of @tokens.
94 *
95 * Returns: (nullable) (transfer full): the #GIcon or %NULL on error
96 *
97 * Since: 2.20
98 */
99 GIcon * (* from_tokens) (gchar **tokens,
100 gint num_tokens,
101 gint version,
102 GError **error);
103
104 GVariant * (* serialize) (GIcon *icon);
105};
106
107GIO_AVAILABLE_IN_ALL
108GType g_icon_get_type (void) G_GNUC_CONST;
109
110GIO_AVAILABLE_IN_ALL
111guint g_icon_hash (gconstpointer icon);
112GIO_AVAILABLE_IN_ALL
113gboolean g_icon_equal (GIcon *icon1,
114 GIcon *icon2);
115GIO_AVAILABLE_IN_ALL
116gchar *g_icon_to_string (GIcon *icon);
117GIO_AVAILABLE_IN_ALL
118GIcon *g_icon_new_for_string (const gchar *str,
119 GError **error);
120
121GIO_AVAILABLE_IN_2_38
122GVariant * g_icon_serialize (GIcon *icon);
123GIO_AVAILABLE_IN_2_38
124GIcon * g_icon_deserialize (GVariant *value);
125
126G_END_DECLS
127
128#endif /* __G_ICON_H__ */
129

source code of include/glib-2.0/gio/gicon.h