2 * position-publisher.c - Source for PositionPublisher
3 * Copyright (C) 2010 Guillaume Desmottes
4 * @author Guillaume Desmottes <gdesmott@gnome.org>
6 * This library is free software; you can redistribute it and/or
7 * modify it under the terms of the GNU Lesser General Public
8 * License as published by the Free Software Foundation; either
9 * version 2.1 of the License, or (at your option) any later version.
11 * This library is distributed in the hope that it will be useful,
12 * but WITHOUT ANY WARRANTY; without even the implied warranty of
13 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
14 * Lesser General Public License for more details.
16 * You should have received a copy of the GNU Lesser General Public
17 * License along with this library; if not, write to the Free Software
18 * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
25 #include <telepathy-glib/dbus.h>
26 #include <telepathy-glib/interfaces.h>
28 #include <location/location-gps-device.h>
30 #include "connection-watcher.h"
31 #include "position-publisher.h"
33 G_DEFINE_TYPE(PositionPublisher, position_publisher, G_TYPE_OBJECT)
42 /* Minimum time before 2 publishing (in seconds) */
43 #define PUBLISH_THROTTLE 10
45 /* private structure */
46 typedef struct _PositionPublisherPrivate PositionPublisherPrivate;
48 struct _PositionPublisherPrivate
50 ConnectionWatcher *watcher;
51 LocationGPSDevice *gps_device;
54 /* If not 0, we are waiting before publishing again */
55 guint throttle_timeout;
56 /* TRUE if location has been modified while we were waiting */
60 gboolean dispose_has_run;
63 #define POSITION_PUBLISHER_GET_PRIVATE(o) (G_TYPE_INSTANCE_GET_PRIVATE ((o), POSITION_PUBLISHER_TYPE, PositionPublisherPrivate))
65 static void conn_invalidated_cb (TpProxy *conn,
69 PositionPublisher *self);
71 static void publish_to_all (PositionPublisher *self);
74 remove_connection (PositionPublisher *self,
77 PositionPublisherPrivate *priv = POSITION_PUBLISHER_GET_PRIVATE (self);
79 g_signal_handlers_disconnect_by_func (conn, G_CALLBACK (conn_invalidated_cb),
81 priv->connections = g_slist_remove (priv->connections, conn);
82 g_object_unref (conn);
86 set_location_cb (TpConnection *conn,
91 PositionPublisher *self = POSITION_PUBLISHER (weak_object);
95 g_print ("SetLocation failed (%s): %s\n", tp_proxy_get_object_path (conn),
98 if (error->code == TP_ERROR_NOT_IMPLEMENTED)
100 g_print ("remove connection\n");
101 remove_connection (self, conn);
107 g_print ("SetLocation succeed (%s)\n", tp_proxy_get_object_path (conn));
111 publish_throttle_timeout_cb (gpointer data)
113 PositionPublisher *self = data;
114 PositionPublisherPrivate *priv = POSITION_PUBLISHER_GET_PRIVATE (self);
116 priv->throttle_timeout = 0;
120 publish_to_all (self);
121 priv->modified = FALSE;
128 publish_to_conn (PositionPublisher *self,
131 PositionPublisherPrivate *priv = POSITION_PUBLISHER_GET_PRIVATE (self);
133 if (priv->location == NULL)
136 if (priv->throttle_timeout != 0)
140 tp_cli_connection_interface_location_call_set_location (conn, -1,
141 priv->location, set_location_cb, NULL, NULL, G_OBJECT (self));
143 /* We won't publish during the next PUBLISH_THROTTLE seconds */
144 priv->throttle_timeout = g_timeout_add_seconds (PUBLISH_THROTTLE,
145 publish_throttle_timeout_cb, self);
149 publish_to_all (PositionPublisher *self)
151 PositionPublisherPrivate *priv = POSITION_PUBLISHER_GET_PRIVATE (self);
154 for (l = priv->connections; l != NULL; l = g_slist_next (l))
156 TpConnection *conn = l->data;
158 publish_to_conn (self, conn);
163 update_position (PositionPublisher *self,
169 PositionPublisherPrivate *priv = POSITION_PUBLISHER_GET_PRIVATE (self);
171 g_print ("update position: lat: %f lon: %f alt: %f accuracy: %f\n",
172 lat, lon, alt, accuracy);
174 if (priv->location != NULL)
175 g_hash_table_unref (priv->location);
177 priv->location = tp_asv_new (
178 "timestamp", G_TYPE_INT64, (gint64) time (NULL),
179 "lat", G_TYPE_DOUBLE, lat,
180 "lon", G_TYPE_DOUBLE, lon,
181 "alt", G_TYPE_DOUBLE, alt,
182 "accuracy", G_TYPE_DOUBLE, accuracy,
185 priv->modified = TRUE;
187 publish_to_all (self);
191 location_changed_cb (LocationGPSDevice *device,
192 PositionPublisher *self)
197 if (device->fix == NULL)
200 if (!(device->fix->fields & LOCATION_GPS_DEVICE_LATLONG_SET))
203 update_position (self, device->fix->latitude, device->fix->longitude,
204 device->fix->altitude, device->fix->eph / 100.0);
208 conn_invalidated_cb (TpProxy *conn,
212 PositionPublisher *self)
214 g_print ("connection %s invalidated; removing\n", tp_proxy_get_object_path (
217 remove_connection (self, TP_CONNECTION (conn));
221 connection_added_cb (ConnectionWatcher *watcher,
223 PositionPublisher *self)
225 PositionPublisherPrivate *priv = POSITION_PUBLISHER_GET_PRIVATE (self);
227 if (g_slist_find (priv->connections, conn) != NULL)
230 if (!tp_proxy_has_interface_by_id (conn,
231 TP_IFACE_QUARK_CONNECTION_INTERFACE_LOCATION))
234 priv->connections = g_slist_prepend (priv->connections, g_object_ref (conn));
236 g_signal_connect (conn, "invalidated",
237 G_CALLBACK (conn_invalidated_cb), self);
239 publish_to_conn (self, conn);
243 position_publisher_init (PositionPublisher *obj)
245 PositionPublisherPrivate *priv = POSITION_PUBLISHER_GET_PRIVATE (obj);
247 priv->watcher = connection_watcher_new ();
249 g_signal_connect (priv->watcher, "connection-added",
250 G_CALLBACK (connection_added_cb), obj);
252 priv->gps_device = g_object_new (LOCATION_TYPE_GPS_DEVICE, NULL);
254 g_signal_connect (priv->gps_device, "changed",
255 G_CALLBACK (location_changed_cb), obj);
257 priv->connections = NULL;
261 position_publisher_constructed (GObject *object)
263 PositionPublisher *self = POSITION_PUBLISHER (object);
264 PositionPublisherPrivate *priv = POSITION_PUBLISHER_GET_PRIVATE (self);
266 connection_watcher_start (priv->watcher);
268 if (G_OBJECT_CLASS (position_publisher_parent_class)->constructed)
269 G_OBJECT_CLASS (position_publisher_parent_class)->constructed (object);
272 static void position_publisher_dispose (GObject *object);
273 static void position_publisher_finalize (GObject *object);
274 static void position_publisher_get_property (GObject *object,
275 guint property_id, GValue *value, GParamSpec *pspec);
276 static void position_publisher_set_property (GObject *object,
277 guint property_id, const GValue *value, GParamSpec *pspec);
280 position_publisher_class_init (PositionPublisherClass *position_publisher_class)
282 GObjectClass *object_class = G_OBJECT_CLASS (position_publisher_class);
283 GParamSpec *param_spec;
285 g_type_class_add_private (position_publisher_class, sizeof (PositionPublisherPrivate));
287 object_class->dispose = position_publisher_dispose;
288 object_class->finalize = position_publisher_finalize;
289 object_class->get_property = position_publisher_get_property;
290 object_class->set_property = position_publisher_set_property;
292 object_class->constructed = position_publisher_constructed;
294 param_spec = g_param_spec_boolean ("blur", "Blur?",
295 "Whether the real GPS position is truncated for privacy concerns.", TRUE,
296 G_PARAM_CONSTRUCT | G_PARAM_WRITABLE | G_PARAM_READABLE
297 | G_PARAM_STATIC_STRINGS);
298 g_object_class_install_property (object_class, PROP_BLUR, param_spec);
302 position_publisher_dispose (GObject *object)
304 PositionPublisher *self = POSITION_PUBLISHER (object);
305 PositionPublisherPrivate *priv = POSITION_PUBLISHER_GET_PRIVATE (self);
308 if (priv->dispose_has_run)
311 priv->dispose_has_run = TRUE;
313 g_object_unref (priv->watcher);
314 g_object_unref (priv->gps_device);
316 for (l = priv->connections; l != NULL; l = g_slist_next (l))
318 g_object_unref (l->data);
321 g_hash_table_unref (priv->location);
323 if (priv->throttle_timeout != 0)
324 g_source_remove (priv->throttle_timeout);
326 if (G_OBJECT_CLASS (position_publisher_parent_class)->dispose)
327 G_OBJECT_CLASS (position_publisher_parent_class)->dispose (object);
331 position_publisher_finalize (GObject *object)
333 PositionPublisher *self = POSITION_PUBLISHER (object);
334 PositionPublisherPrivate *priv = POSITION_PUBLISHER_GET_PRIVATE (self);
336 g_slist_free (priv->connections);
338 G_OBJECT_CLASS (position_publisher_parent_class)->finalize (object);
342 position_publisher_get_property (GObject *object,
347 PositionPublisher *self = POSITION_PUBLISHER (object);
348 PositionPublisherPrivate *priv = POSITION_PUBLISHER_GET_PRIVATE (self);
350 switch (property_id) {
352 g_value_set_boolean (value, priv->blur);
355 G_OBJECT_WARN_INVALID_PROPERTY_ID (object, property_id, pspec);
361 position_publisher_set_property (GObject *object,
366 PositionPublisher *self = POSITION_PUBLISHER (object);
367 PositionPublisherPrivate *priv = POSITION_PUBLISHER_GET_PRIVATE (self);
369 switch (property_id) {
371 priv->blur = g_value_get_boolean (value);
376 G_OBJECT_WARN_INVALID_PROPERTY_ID (object, property_id, pspec);
382 position_publisher_new (gboolean blur)
384 return g_object_new (POSITION_PUBLISHER_TYPE,