gio/gloadableicon.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, see <http://www.gnu.org/licenses/>.
  17  *
  18  * Author: Alexander Larsson <alexl@redhat.com>
  19  */
  20
  21 #ifndef __G_LOADABLE_ICON_H__
  22 #define __G_LOADABLE_ICON_H__
  23
  24 #if !defined (__GIO_GIO_H_INSIDE__) && !defined (GIO_COMPILATION)
  25 #error "Only <gio/gio.h> can be included directly."
  26 #endif
  27
  28 #include <gio/giotypes.h>
  29
  30 G_BEGIN_DECLS
  31
  32 #define G_TYPE_LOADABLE_ICON            (g_loadable_icon_get_type ())
  33 #define G_LOADABLE_ICON(obj)            (G_TYPE_CHECK_INSTANCE_CAST ((obj), G_TYPE_LOADABLE_ICON, GLoadableIcon))
  34 #define G_IS_LOADABLE_ICON(obj)         (G_TYPE_CHECK_INSTANCE_TYPE ((obj), G_TYPE_LOADABLE_ICON))
  35 #define G_LOADABLE_ICON_GET_IFACE(obj)  (G_TYPE_INSTANCE_GET_INTERFACE ((obj), G_TYPE_LOADABLE_ICON, GLoadableIconIface))
  36
  37 /**
  38  * GLoadableIcon:
  39  *
  40  * Generic type for all kinds of icons that can be loaded
  41  * as a stream.
  42  **/
  43 typedef struct _GLoadableIconIface              GLoadableIconIface;
  44
  45 /**
  46  * GLoadableIconIface:
  47  * @g_iface: The parent interface.
  48  * @load: Loads an icon.
  49  * @load_async: Loads an icon asynchronously.
  50  * @load_finish: Finishes an asynchronous icon load.
  51  *
  52  * Interface for icons that can be loaded as a stream.
  53  **/
  54 struct _GLoadableIconIface
  55 {
  56   GTypeInterface g_iface;
  57
  58   /* Virtual Table */
  59
  60   GInputStream * (* load)        (GLoadableIcon       *icon,
  61                                   int                  size,
  62                                   char               **type,
  63                                   GCancellable        *cancellable,
  64                                   GError             **error);
  65   void           (* load_async)  (GLoadableIcon       *icon,
  66                                   int                  size,
  67                                   GCancellable        *cancellable,
  68                                   GAsyncReadyCallback  callback,
  69                                   gpointer             user_data);
  70   GInputStream * (* load_finish) (GLoadableIcon       *icon,
  71                                   GAsyncResult        *res,
  72                                   char               **type,
  73                                   GError             **error);
  74 };
  75
  76 GLIB_AVAILABLE_IN_ALL
  77 GType         g_loadable_icon_get_type    (void) G_GNUC_CONST;
  78
  79 GLIB_AVAILABLE_IN_ALL
  80 GInputStream *g_loadable_icon_load        (GLoadableIcon        *icon,
  81                                            int                   size,
  82                                            char                **type,
  83                                            GCancellable         *cancellable,
  84                                            GError              **error);
  85 GLIB_AVAILABLE_IN_ALL
  86 void          g_loadable_icon_load_async  (GLoadableIcon        *icon,
  87                                            int                   size,
  88                                            GCancellable         *cancellable,
  89                                            GAsyncReadyCallback   callback,
  90                                            gpointer              user_data);
  91 GLIB_AVAILABLE_IN_ALL
  92 GInputStream *g_loadable_icon_load_finish (GLoadableIcon        *icon,
  93                                            GAsyncResult         *res,
  94                                            char                **type,
  95                                            GError              **error);
  96
  97 G_END_DECLS
  98
  99 #endif /* __G_LOADABLE_ICON_H__ */