gio/gicon.h

   1 /* GIO - GLib Input, Output and Streaming Library
   2  *
   3  * Copyright (C) 2006-2007 Red Hat, Inc.
   4  *
   5  * This library is free software; you can redistribute it and/or
   6  * modify it under the terms of the GNU Lesser General Public
   7  * License as published by the Free Software Foundation; either
   8  * version 2 of the License, or (at your option) any later version.
   9  *
  10  * This library is distributed in the hope that it will be useful,
  11  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  12  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  13  * Lesser General Public License for more details.
  14  *
  15  * You should have received a copy of the GNU Lesser General
  16  * Public License along with this library; if not, write to the
  17  * Free Software Foundation, Inc., 59 Temple Place, Suite 330,
  18  * Boston, MA 02111-1307, USA.
  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
  32 G_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
  39 /**
  40  * GIcon:
  41  *
  42  * An abstract type that specifies an icon.
  43  **/
  44 typedef struct _GIconIface GIconIface;
  45
  46 /**
  47  * GIconIface:
  48  * @g_iface: The parent interface.
  49  * @hash: A hash for a given #GIcon.
  50  * @equal: Checks if two #GIcon<!-- -->s are equal.
  51  * @to_tokens: Serializes a #GIcon into tokens. The tokens must not
  52  * contain any whitespace. Don't implement if the #GIcon can't be
  53  * serialized (Since 2.20).
  54  * @from_tokens: Constructs a #GIcon from tokens. Set the #GError if
  55  * the tokens are malformed. Don't implement if the #GIcon can't be
  56  * serialized (Since 2.20).
  57  *
  58  * GIconIface is used to implement GIcon types for various
  59  * different systems. See #GThemedIcon and #GLoadableIcon for
  60  * examples of how to implement this interface.
  61  */
  62 struct _GIconIface
  63 {
  64   GTypeInterface g_iface;
  65
  66   /* Virtual Table */
  67
  68   guint       (* hash)        (GIcon   *icon);
  69   gboolean    (* equal)       (GIcon   *icon1,
  70                                GIcon   *icon2);
  71   gboolean    (* to_tokens)   (GIcon   *icon,
  72                                GPtrArray *tokens,
  73                                gint    *out_version);
  74   GIcon *     (* from_tokens) (gchar  **tokens,
  75                                gint     num_tokens,
  76                                gint     version,
  77                                GError **error);
  78
  79   GVariant *  (* serialize)   (GIcon   *icon);
  80 };
  81
  82 GLIB_AVAILABLE_IN_ALL
  83 GType    g_icon_get_type  (void) G_GNUC_CONST;
  84
  85 GLIB_AVAILABLE_IN_ALL
  86 guint    g_icon_hash            (gconstpointer  icon);
  87 GLIB_AVAILABLE_IN_ALL
  88 gboolean g_icon_equal           (GIcon         *icon1,
  89                                  GIcon         *icon2);
  90 GLIB_AVAILABLE_IN_ALL
  91 gchar   *g_icon_to_string       (GIcon         *icon);
  92 GLIB_AVAILABLE_IN_ALL
  93 GIcon   *g_icon_new_for_string  (const gchar   *str,
  94                                  GError       **error);
  95
  96 GLIB_AVAILABLE_IN_2_38
  97 GVariant * g_icon_serialize     (GIcon         *icon);
  98 GLIB_AVAILABLE_IN_2_38
  99 GIcon *    g_icon_deserialize   (GVariant      *value);
 100
 101 G_END_DECLS
 102
 103 #endif /* __G_ICON_H__ */