nexmon – Blame information for rev 1

Subversion Repositories:
Rev:
Rev Author Line No. Line
1 office 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 #include "config.h"
22  
23 #include "gfileicon.h"
24 #include "gfile.h"
25 #include "gicon.h"
26 #include "glibintl.h"
27 #include "gloadableicon.h"
28 #include "ginputstream.h"
29 #include "gtask.h"
30 #include "gioerror.h"
31  
32  
33 /**
34 * SECTION:gfileicon
35 * @short_description: Icons pointing to an image file
36 * @include: gio/gio.h
37 * @see_also: #GIcon, #GLoadableIcon
38 *
39 * #GFileIcon specifies an icon by pointing to an image file
40 * to be used as icon.
41 *
42 **/
43  
44 static void g_file_icon_icon_iface_init (GIconIface *iface);
45 static void g_file_icon_loadable_icon_iface_init (GLoadableIconIface *iface);
46 static void g_file_icon_load_async (GLoadableIcon *icon,
47 int size,
48 GCancellable *cancellable,
49 GAsyncReadyCallback callback,
50 gpointer user_data);
51  
52 struct _GFileIcon
53 {
54 GObject parent_instance;
55  
56 GFile *file;
57 };
58  
59 struct _GFileIconClass
60 {
61 GObjectClass parent_class;
62 };
63  
64 enum
65 {
66 PROP_0,
67 PROP_FILE
68 };
69  
70 G_DEFINE_TYPE_WITH_CODE (GFileIcon, g_file_icon, G_TYPE_OBJECT,
71 G_IMPLEMENT_INTERFACE (G_TYPE_ICON,
72 g_file_icon_icon_iface_init)
73 G_IMPLEMENT_INTERFACE (G_TYPE_LOADABLE_ICON,
74 g_file_icon_loadable_icon_iface_init))
75  
76 static void
77 g_file_icon_get_property (GObject *object,
78 guint prop_id,
79 GValue *value,
80 GParamSpec *pspec)
81 {
82 GFileIcon *icon = G_FILE_ICON (object);
83  
84 switch (prop_id)
85 {
86 case PROP_FILE:
87 g_value_set_object (value, icon->file);
88 break;
89  
90 default:
91 G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
92 }
93 }
94  
95 static void
96 g_file_icon_set_property (GObject *object,
97 guint prop_id,
98 const GValue *value,
99 GParamSpec *pspec)
100 {
101 GFileIcon *icon = G_FILE_ICON (object);
102  
103 switch (prop_id)
104 {
105 case PROP_FILE:
106 icon->file = G_FILE (g_value_dup_object (value));
107 break;
108  
109 default:
110 G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
111 }
112 }
113  
114 static void
115 g_file_icon_finalize (GObject *object)
116 {
117 GFileIcon *icon;
118  
119 icon = G_FILE_ICON (object);
120  
121 if (icon->file)
122 g_object_unref (icon->file);
123  
124 G_OBJECT_CLASS (g_file_icon_parent_class)->finalize (object);
125 }
126  
127 static void
128 g_file_icon_class_init (GFileIconClass *klass)
129 {
130 GObjectClass *gobject_class = G_OBJECT_CLASS (klass);
131  
132 gobject_class->get_property = g_file_icon_get_property;
133 gobject_class->set_property = g_file_icon_set_property;
134 gobject_class->finalize = g_file_icon_finalize;
135  
136 /**
137 * GFileIcon:file:
138 *
139 * The file containing the icon.
140 */
141 g_object_class_install_property (gobject_class, PROP_FILE,
142 g_param_spec_object ("file",
143 P_("file"),
144 P_("The file containing the icon"),
145 G_TYPE_FILE,
146 G_PARAM_CONSTRUCT_ONLY | G_PARAM_READWRITE | G_PARAM_STATIC_NAME | G_PARAM_STATIC_BLURB | G_PARAM_STATIC_NICK));
147 }
148  
149 static void
150 g_file_icon_init (GFileIcon *file)
151 {
152 }
153  
154 /**
155 * g_file_icon_new:
156 * @file: a #GFile.
157 *
158 * Creates a new icon for a file.
159 *
160 * Returns: (transfer full) (type GFileIcon): a #GIcon for the given
161 * @file, or %NULL on error.
162 **/
163 GIcon *
164 g_file_icon_new (GFile *file)
165 {
166 g_return_val_if_fail (G_IS_FILE (file), NULL);
167  
168 return G_ICON (g_object_new (G_TYPE_FILE_ICON, "file", file, NULL));
169 }
170  
171 /**
172 * g_file_icon_get_file:
173 * @icon: a #GIcon.
174 *
175 * Gets the #GFile associated with the given @icon.
176 *
177 * Returns: (transfer none): a #GFile, or %NULL.
178 **/
179 GFile *
180 g_file_icon_get_file (GFileIcon *icon)
181 {
182 g_return_val_if_fail (G_IS_FILE_ICON (icon), NULL);
183  
184 return icon->file;
185 }
186  
187 static guint
188 g_file_icon_hash (GIcon *icon)
189 {
190 GFileIcon *file_icon = G_FILE_ICON (icon);
191  
192 return g_file_hash (file_icon->file);
193 }
194  
195 static gboolean
196 g_file_icon_equal (GIcon *icon1,
197 GIcon *icon2)
198 {
199 GFileIcon *file1 = G_FILE_ICON (icon1);
200 GFileIcon *file2 = G_FILE_ICON (icon2);
201  
202 return g_file_equal (file1->file, file2->file);
203 }
204  
205 static gboolean
206 g_file_icon_to_tokens (GIcon *icon,
207 GPtrArray *tokens,
208 gint *out_version)
209 {
210 GFileIcon *file_icon = G_FILE_ICON (icon);
211  
212 g_return_val_if_fail (out_version != NULL, FALSE);
213  
214 *out_version = 0;
215  
216 g_ptr_array_add (tokens, g_file_get_uri (file_icon->file));
217 return TRUE;
218 }
219  
220 static GIcon *
221 g_file_icon_from_tokens (gchar **tokens,
222 gint num_tokens,
223 gint version,
224 GError **error)
225 {
226 GIcon *icon;
227 GFile *file;
228  
229 icon = NULL;
230  
231 if (version != 0)
232 {
233 g_set_error (error,
234 G_IO_ERROR,
235 G_IO_ERROR_INVALID_ARGUMENT,
236 _("Can't handle version %d of GFileIcon encoding"),
237 version);
238 goto out;
239 }
240  
241 if (num_tokens != 1)
242 {
243 g_set_error_literal (error,
244 G_IO_ERROR,
245 G_IO_ERROR_INVALID_ARGUMENT,
246 _("Malformed input data for GFileIcon"));
247 goto out;
248 }
249  
250 file = g_file_new_for_uri (tokens[0]);
251 icon = g_file_icon_new (file);
252 g_object_unref (file);
253  
254 out:
255 return icon;
256 }
257  
258 static GVariant *
259 g_file_icon_serialize (GIcon *icon)
260 {
261 GFileIcon *file_icon = G_FILE_ICON (icon);
262  
263 return g_variant_new ("(sv)", "file", g_variant_new_take_string (g_file_get_uri (file_icon->file)));
264 }
265  
266 static void
267 g_file_icon_icon_iface_init (GIconIface *iface)
268 {
269 iface->hash = g_file_icon_hash;
270 iface->equal = g_file_icon_equal;
271 iface->to_tokens = g_file_icon_to_tokens;
272 iface->from_tokens = g_file_icon_from_tokens;
273 iface->serialize = g_file_icon_serialize;
274 }
275  
276  
277 static GInputStream *
278 g_file_icon_load (GLoadableIcon *icon,
279 int size,
280 char **type,
281 GCancellable *cancellable,
282 GError **error)
283 {
284 GFileInputStream *stream;
285 GFileIcon *file_icon = G_FILE_ICON (icon);
286  
287 stream = g_file_read (file_icon->file,
288 cancellable,
289 error);
290  
291 if (stream && type)
292 *type = NULL;
293  
294 return G_INPUT_STREAM (stream);
295 }
296  
297 static void
298 load_async_callback (GObject *source_object,
299 GAsyncResult *res,
300 gpointer user_data)
301 {
302 GFileInputStream *stream;
303 GError *error = NULL;
304 GTask *task = user_data;
305  
306 stream = g_file_read_finish (G_FILE (source_object), res, &error);
307 if (stream == NULL)
308 g_task_return_error (task, error);
309 else
310 g_task_return_pointer (task, stream, g_object_unref);
311 g_object_unref (task);
312 }
313  
314 static void
315 g_file_icon_load_async (GLoadableIcon *icon,
316 int size,
317 GCancellable *cancellable,
318 GAsyncReadyCallback callback,
319 gpointer user_data)
320 {
321 GFileIcon *file_icon = G_FILE_ICON (icon);
322 GTask *task;
323  
324 task = g_task_new (icon, cancellable, callback, user_data);
325  
326 g_file_read_async (file_icon->file, 0,
327 cancellable,
328 load_async_callback, task);
329 }
330  
331 static GInputStream *
332 g_file_icon_load_finish (GLoadableIcon *icon,
333 GAsyncResult *res,
334 char **type,
335 GError **error)
336 {
337 g_return_val_if_fail (g_task_is_valid (res, icon), NULL);
338  
339 if (type)
340 *type = NULL;
341  
342 return g_task_propagate_pointer (G_TASK (res), error);
343 }
344  
345 static void
346 g_file_icon_loadable_icon_iface_init (GLoadableIconIface *iface)
347 {
348 iface->load = g_file_icon_load;
349 iface->load_async = g_file_icon_load_async;
350 iface->load_finish = g_file_icon_load_finish;
351 }