1 /* GIO - GLib Input, Output and Streaming Library
3 * Copyright (C) 2006-2007 Red Hat, Inc.
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.
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.
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.
20 * Author: Alexander Larsson <alexl@redhat.com>
25 #include "gfileicon.h"
29 #include "gloadableicon.h"
30 #include "ginputstream.h"
37 * @short_description: Icons pointing to an image file
39 * @see_also: #GIcon, #GLoadableIcon
41 * #GFileIcon specifies an icon by pointing to an image file
46 static void g_file_icon_icon_iface_init (GIconIface *iface);
47 static void g_file_icon_loadable_icon_iface_init (GLoadableIconIface *iface);
48 static void g_file_icon_load_async (GLoadableIcon *icon,
50 GCancellable *cancellable,
51 GAsyncReadyCallback callback,
56 GObject parent_instance;
61 struct _GFileIconClass
63 GObjectClass parent_class;
72 G_DEFINE_TYPE_WITH_CODE (GFileIcon, g_file_icon, G_TYPE_OBJECT,
73 G_IMPLEMENT_INTERFACE (G_TYPE_ICON,
74 g_file_icon_icon_iface_init)
75 G_IMPLEMENT_INTERFACE (G_TYPE_LOADABLE_ICON,
76 g_file_icon_loadable_icon_iface_init))
79 g_file_icon_get_property (GObject *object,
84 GFileIcon *icon = G_FILE_ICON (object);
89 g_value_set_object (value, icon->file);
93 G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
98 g_file_icon_set_property (GObject *object,
103 GFileIcon *icon = G_FILE_ICON (object);
108 icon->file = G_FILE (g_value_dup_object (value));
112 G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
117 g_file_icon_finalize (GObject *object)
121 icon = G_FILE_ICON (object);
123 g_object_unref (icon->file);
125 G_OBJECT_CLASS (g_file_icon_parent_class)->finalize (object);
129 g_file_icon_class_init (GFileIconClass *klass)
131 GObjectClass *gobject_class = G_OBJECT_CLASS (klass);
133 gobject_class->get_property = g_file_icon_get_property;
134 gobject_class->set_property = g_file_icon_set_property;
135 gobject_class->finalize = g_file_icon_finalize;
140 * The file containing the icon.
142 g_object_class_install_property (gobject_class, PROP_FILE,
143 g_param_spec_object ("file",
145 P_("The file containing the icon"),
147 G_PARAM_CONSTRUCT_ONLY | G_PARAM_READWRITE | G_PARAM_STATIC_NAME | G_PARAM_STATIC_BLURB | G_PARAM_STATIC_NICK));
151 g_file_icon_init (GFileIcon *file)
159 * Creates a new icon for a file.
161 * Returns: (transfer full) (type GFileIcon): a #GIcon for the given
162 * @file, or %NULL on error.
165 g_file_icon_new (GFile *file)
167 g_return_val_if_fail (G_IS_FILE (file), NULL);
169 return G_ICON (g_object_new (G_TYPE_FILE_ICON, "file", file, NULL));
173 * g_file_icon_get_file:
176 * Gets the #GFile associated with the given @icon.
178 * Returns: (transfer none): a #GFile, or %NULL.
181 g_file_icon_get_file (GFileIcon *icon)
183 g_return_val_if_fail (G_IS_FILE_ICON (icon), NULL);
189 g_file_icon_hash (GIcon *icon)
191 GFileIcon *file_icon = G_FILE_ICON (icon);
193 return g_file_hash (file_icon->file);
197 g_file_icon_equal (GIcon *icon1,
200 GFileIcon *file1 = G_FILE_ICON (icon1);
201 GFileIcon *file2 = G_FILE_ICON (icon2);
203 return g_file_equal (file1->file, file2->file);
207 g_file_icon_to_tokens (GIcon *icon,
211 GFileIcon *file_icon = G_FILE_ICON (icon);
213 g_return_val_if_fail (out_version != NULL, FALSE);
217 g_ptr_array_add (tokens, g_file_get_uri (file_icon->file));
222 g_file_icon_from_tokens (gchar **tokens,
236 G_IO_ERROR_INVALID_ARGUMENT,
237 _("Can't handle version %d of GFileIcon encoding"),
244 g_set_error_literal (error,
246 G_IO_ERROR_INVALID_ARGUMENT,
247 _("Malformed input data for GFileIcon"));
251 file = g_file_new_for_uri (tokens[0]);
252 icon = g_file_icon_new (file);
253 g_object_unref (file);
260 g_file_icon_serialize (GIcon *icon)
262 GFileIcon *file_icon = G_FILE_ICON (icon);
264 return g_variant_new ("(sv)", "file", g_variant_new_take_string (g_file_get_uri (file_icon->file)));
268 g_file_icon_icon_iface_init (GIconIface *iface)
270 iface->hash = g_file_icon_hash;
271 iface->equal = g_file_icon_equal;
272 iface->to_tokens = g_file_icon_to_tokens;
273 iface->from_tokens = g_file_icon_from_tokens;
274 iface->serialize = g_file_icon_serialize;
278 static GInputStream *
279 g_file_icon_load (GLoadableIcon *icon,
282 GCancellable *cancellable,
285 GFileInputStream *stream;
286 GFileIcon *file_icon = G_FILE_ICON (icon);
288 stream = g_file_read (file_icon->file,
295 return G_INPUT_STREAM (stream);
299 load_async_callback (GObject *source_object,
303 GFileInputStream *stream;
304 GError *error = NULL;
305 GTask *task = user_data;
307 stream = g_file_read_finish (G_FILE (source_object), res, &error);
309 g_task_return_error (task, error);
311 g_task_return_pointer (task, stream, g_object_unref);
312 g_object_unref (task);
316 g_file_icon_load_async (GLoadableIcon *icon,
318 GCancellable *cancellable,
319 GAsyncReadyCallback callback,
322 GFileIcon *file_icon = G_FILE_ICON (icon);
325 task = g_task_new (icon, cancellable, callback, user_data);
327 g_file_read_async (file_icon->file, 0,
329 load_async_callback, task);
332 static GInputStream *
333 g_file_icon_load_finish (GLoadableIcon *icon,
338 g_return_val_if_fail (g_task_is_valid (res, icon), NULL);
343 return g_task_propagate_pointer (G_TASK (res), error);
347 g_file_icon_loadable_icon_iface_init (GLoadableIconIface *iface)
349 iface->load = g_file_icon_load;
350 iface->load_async = g_file_icon_load_async;
351 iface->load_finish = g_file_icon_load_finish;