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"
31 #include "gsimpleasyncresult.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 _("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: a #GIcon for the given @file, or %NULL on error.
164 g_file_icon_new (GFile *file)
166 g_return_val_if_fail (G_IS_FILE (file), NULL);
168 return G_ICON (g_object_new (G_TYPE_FILE_ICON, "file", file, NULL));
172 * g_file_icon_get_file:
175 * Gets the #GFile associated with the given @icon.
177 * Returns: a #GFile, or %NULL.
180 g_file_icon_get_file (GFileIcon *icon)
182 g_return_val_if_fail (G_IS_FILE_ICON (icon), NULL);
188 g_file_icon_hash (GIcon *icon)
190 GFileIcon *file_icon = G_FILE_ICON (icon);
192 return g_file_hash (file_icon->file);
196 g_file_icon_equal (GIcon *icon1,
199 GFileIcon *file1 = G_FILE_ICON (icon1);
200 GFileIcon *file2 = G_FILE_ICON (icon2);
202 return g_file_equal (file1->file, file2->file);
207 g_file_icon_icon_iface_init (GIconIface *iface)
209 iface->hash = g_file_icon_hash;
210 iface->equal = g_file_icon_equal;
214 static GInputStream *
215 g_file_icon_load (GLoadableIcon *icon,
218 GCancellable *cancellable,
221 GFileInputStream *stream;
222 GFileIcon *file_icon = G_FILE_ICON (icon);
224 stream = g_file_read (file_icon->file,
228 return G_INPUT_STREAM (stream);
233 GAsyncReadyCallback callback;
238 load_data_free (LoadData *data)
240 g_object_unref (data->icon);
245 load_async_callback (GObject *source_object,
249 GFileInputStream *stream;
250 GError *error = NULL;
251 GSimpleAsyncResult *simple;
252 LoadData *data = user_data;
254 stream = g_file_read_finish (G_FILE (source_object), res, &error);
258 simple = g_simple_async_result_new_from_error (G_OBJECT (data->icon),
262 g_error_free (error);
266 simple = g_simple_async_result_new (G_OBJECT (data->icon),
269 g_file_icon_load_async);
271 g_simple_async_result_set_op_res_gpointer (simple,
277 g_simple_async_result_complete (simple);
279 load_data_free (data);
283 g_file_icon_load_async (GLoadableIcon *icon,
285 GCancellable *cancellable,
286 GAsyncReadyCallback callback,
289 GFileIcon *file_icon = G_FILE_ICON (icon);
292 data = g_new0 (LoadData, 1);
293 data->icon = g_object_ref (icon);
294 data->callback = callback;
295 data->user_data = user_data;
297 g_file_read_async (file_icon->file, 0,
299 load_async_callback, data);
303 static GInputStream *
304 g_file_icon_load_finish (GLoadableIcon *icon,
309 GSimpleAsyncResult *simple = G_SIMPLE_ASYNC_RESULT (res);
312 g_warn_if_fail (g_simple_async_result_get_source_tag (simple) == g_file_icon_load_async);
317 op = g_simple_async_result_get_op_res_gpointer (simple);
319 return g_object_ref (op);
325 g_file_icon_loadable_icon_iface_init (GLoadableIconIface *iface)
327 iface->load = g_file_icon_load;
328 iface->load_async = g_file_icon_load_async;
329 iface->load_finish = g_file_icon_load_finish;
332 #define __G_FILE_ICON_C__
333 #include "gioaliasdef.c"