int
location_geoclue_get_location(location_geoclue_state_t *state,
location_t *location)
{
GeocluePositionFields fields;
GError *error = NULL;
double latitude = 0, longitude = 0;
fields = geoclue_position_get_position(state->position, NULL,
&latitude, &longitude, NULL,
NULL, &error);
if (error) {
g_printerr(_("Could not get location: %s.\n"), error->message);
g_error_free(error);
return -1;
}
if (fields & GEOCLUE_POSITION_FIELDS_LATITUDE &&
fields & GEOCLUE_POSITION_FIELDS_LONGITUDE) {
fprintf(stdout, _("According to the geoclue provider"
" we're at: %.2f, %.2f\n"),
latitude, longitude);
} else {
g_warning(_("Provider does not have a valid location available."));
return -1;
}
location->lat = latitude;
location->lon = longitude;
return 0;
}
int
location_geoclue_get_location(location_geoclue_state_t *state,
float *lat, float *lon)
{
GeocluePositionFields fields;
GError *error = NULL;
double latitude = 0, longitude = 0;
/* Due to timeouts, retry this 3 times. */
int retries = 4;
while(--retries) {
fields = geoclue_position_get_position(state->position, NULL,
&latitude, &longitude, NULL,
NULL, &error);
if (error) {
g_printerr(_("Could not get location: %s.\n"), error->message);
g_error_free(error);
return -1;
}
if (fields & GEOCLUE_POSITION_FIELDS_LATITUDE &&
fields & GEOCLUE_POSITION_FIELDS_LONGITUDE) {
break;
}
g_warning(_("Could not get location, %d retries left.\n"), retries);
/* Sleep for a while to let connectivity catch up. */
usleep(1000000);
}
if (fields & GEOCLUE_POSITION_FIELDS_LATITUDE &&
fields & GEOCLUE_POSITION_FIELDS_LONGITUDE) {
fprintf(stdout, _("According to the geoclue provider"
" we're at: %.2f, %.2f\n"),
latitude, longitude);
} else {
g_warning(_("Provider does not have a valid location available."));
return -1;
}
*lat = latitude;
*lon = longitude;
return 0;
}
void GeolocationServiceGtk::updateLocationInformation()
{
ASSERT(m_geocluePosition);
GOwnPtr<GError> error;
GOwnPtr<GeoclueAccuracy> accuracy;
GeocluePositionFields fields = geoclue_position_get_position(m_geocluePosition, &m_timestamp,
&m_latitude, &m_longitude,
&m_altitude, &accuracy.outPtr(),
&error.outPtr());
if (error) {
setError(PositionError::POSITION_UNAVAILABLE, error->message);
return;
} else if (!(fields & GEOCLUE_POSITION_FIELDS_LATITUDE && fields & GEOCLUE_POSITION_FIELDS_LONGITUDE)) {
setError(PositionError::POSITION_UNAVAILABLE, "Position could not be determined.");
return;
}
}
int main (int argc, char** argv)
{
gchar *service, *path;
GeocluePosition *pos = NULL;
GeocluePositionFields fields;
int timestamp;
double lat, lon;
GeoclueAccuracy *accuracy = NULL;
GMainLoop *mainloop;
GError *error = NULL;
g_type_init();
if (argc < 2 || argc % 2 != 0) {
g_printerr ("Usage:\n position-example <provider_name> [option value]\n");
return 1;
}
g_print ("Using provider '%s'\n", argv[1]);
service = g_strdup_printf ("org.freedesktop.Geoclue.Providers.%s", argv[1]);
path = g_strdup_printf ("/org/freedesktop/Geoclue/Providers/%s", argv[1]);
mainloop = g_main_loop_new (NULL, FALSE);
/* Create new GeocluePosition */
pos = geoclue_position_new (service, path);
if (pos == NULL) {
g_printerr ("Error while creating GeocluePosition object.\n");
return 1;
}
g_free (service);
g_free (path);
if (argc > 2) {
GHashTable *options;
options = parse_options (argc, argv);
if (!geoclue_provider_set_options (GEOCLUE_PROVIDER (pos), options, &error)) {
g_printerr ("Error setting options: %s\n",
error->message);
g_error_free (error);
error = NULL;
}
g_hash_table_destroy (options);
}
/* Query current position. We're not interested in altitude
this time, so leave it NULL. Same can be done with all other
arguments that aren't interesting to the client */
fields = geoclue_position_get_position (pos, ×tamp,
&lat, &lon, NULL,
&accuracy, &error);
if (error) {
g_printerr ("Error getting position: %s\n", error->message);
g_error_free (error);
g_object_unref (pos);
return 1;
}
/* Print out coordinates if they are valid */
if (fields & GEOCLUE_POSITION_FIELDS_LATITUDE &&
fields & GEOCLUE_POSITION_FIELDS_LONGITUDE) {
GeoclueAccuracyLevel level;
double horiz_acc;
geoclue_accuracy_get_details (accuracy, &level, &horiz_acc, NULL);
g_print ("Current position:\n");
g_print ("\t%f, %f\n", lat, lon);
g_print ("\tAccuracy level %d (%.0f meters)\n", level, horiz_acc);
} else {
g_print ("Latitude and longitude not available.\n");
}
geoclue_accuracy_free (accuracy);
g_signal_connect (G_OBJECT (pos), "position-changed",
G_CALLBACK (position_changed_cb), NULL);
g_main_loop_run (mainloop);
return 0;
}
