git.maemo.org Git - gps-tracker/blob - gps-tracker.c

   1 #include <glib.h>
   2 #include <glib/gstdio.h>
   3
   4 #include <hildon/hildon.h>
   5 #include <hildon/hildon-file-chooser-dialog.h>
   6 #include <location/location-gpsd-control.h>
   7 #include <location/location-gps-device.h>
   8 #include <location/location-misc.h>
   9 #include <location/location-distance-utils.h>
  10
  11 typedef struct {
  12     HildonProgram *program;
  13     HildonWindow *window;
  14
  15     GtkWidget * main_vbox, *btn_hbox;
  16     GtkWidget *status_label;
  17     GtkButton *start_stop_button, *save_button;
  18     gboolean tracking_is_on;
  19     FILE *outf_p;
  20     gchar *working_dir;
  21     gchar *intermediate_gpx_data_filename;
  22 } AppData;
  23
  24 static gchar * interface_file_chooser (AppData * appdata, GtkFileChooserAction action)
  25 {
  26     GtkWidget *dialog;
  27     gchar *filename = NULL;
  28     gchar tmpname[PATH_MAX];
  29     time_t t;
  30     struct tm *tmp;
  31
  32     t = time(NULL);
  33     tmp = localtime(&t);
  34     strftime(tmpname, sizeof(tmpname), "gps-tracker-%F-%H-%M.gpx", tmp);
  35     dialog = hildon_file_chooser_dialog_new (GTK_WINDOW (appdata->window), action);
  36     gtk_widget_show_all (GTK_WIDGET (dialog));
  37     gtk_file_chooser_set_current_name(GTK_FILE_CHOOSER (dialog), tmpname);
  38     gtk_file_chooser_set_current_folder(GTK_FILE_CHOOSER(dialog), appdata->working_dir);
  39
  40     if (gtk_dialog_run (GTK_DIALOG (dialog)) == GTK_RESPONSE_OK) {
  41         filename = gtk_file_chooser_get_filename (GTK_FILE_CHOOSER (dialog));
  42     }
  43
  44     gtk_widget_destroy(dialog);
  45     return filename;
  46 }
  47
  48 static void write_gpx_header(FILE *fp)
  49 {
  50   g_return_if_fail(fp);
  51   g_fprintf(fp,
  52       "<?xml version=\"1.0\" encoding=\"UTF-8\"?>\n"
  53       "<gpx version=\"1.0\"\n"
  54       "creator=\"GPS tracker for Maemo\"\n"
  55       "xmlns:xsi=\"http://www.w3.org/2001/XMLSchema-instance\"\n"
  56       "xmlns=\"http://www.topografix.com/GPX/1/0\"\n"
  57       "xsi:schemaLocation=\"http://www.topografix.com/GPX/1/0 http://www.topografix.com/GPX/1/0/gpx.xsd\">\n"
  58       "<trk>\n<trkseg>\n"
  59       );
  60 }
  61
  62 static void write_gpx_footer(FILE *fp)
  63 {
  64   g_return_if_fail(fp);
  65   g_fprintf(fp, "</trkseg>\n</trk>\n</gpx>\n");
  66 }
  67
  68 static void cb_start_stop (GtkWidget * w, AppData * data)
  69 {
  70   data->tracking_is_on = !data->tracking_is_on;
  71   if(data->tracking_is_on) { /* START pressed */
  72     data->outf_p = fopen(data->intermediate_gpx_data_filename, "w");
  73     write_gpx_header(data->outf_p);
  74     hildon_banner_show_information(GTK_WIDGET(data->window), NULL, "Tracking started");
  75     gtk_button_set_label (data->start_stop_button, "Stop");
  76     gtk_widget_set_sensitive(GTK_WIDGET(data->save_button), FALSE);
  77   }
  78   else { /* STOP pressed */
  79     if(data->outf_p) {
  80       write_gpx_footer(data->outf_p);
  81       fclose(data->outf_p);
  82       data->outf_p = NULL;
  83     }
  84     gtk_button_set_label (data->start_stop_button, "Start");
  85     hildon_banner_show_information(GTK_WIDGET(data->window), NULL, "Tracking stopped");
  86     gtk_widget_set_sensitive(GTK_WIDGET(data->save_button), TRUE);
  87   }
  88 }
  89
  90 static void cb_file_save (GtkWidget * w, AppData * data)
  91 {
  92     gchar *filename = NULL;
  93     filename = interface_file_chooser (data, GTK_FILE_CHOOSER_ACTION_SAVE);
  94
  95     if (filename) {
  96       if(g_file_test(data->intermediate_gpx_data_filename, G_FILE_TEST_IS_REGULAR | G_FILE_TEST_EXISTS)) {
  97         g_rename(data->intermediate_gpx_data_filename, filename);
  98         //g_print ("File saved as %s\n", filename);
  99         hildon_banner_show_information(GTK_WIDGET(data->window), NULL, filename);
 100       }
 101       else {
 102         hildon_banner_show_information(GTK_WIDGET(data->window), NULL, "Temp file not found");
 103       }
 104     }
 105     g_free(filename);
 106 }
 107
 108 static void
 109 on_gps_device_changed (LocationGPSDevice *device, gpointer data)
 110 {
 111   AppData *app_data = data;
 112   GtkLabel *info = (GtkLabel*)app_data->status_label;
 113   GString *msg;
 114   FILE *fp = app_data->outf_p;
 115   gchar sbuf1[G_ASCII_DTOSTR_BUF_SIZE], sbuf2[G_ASCII_DTOSTR_BUF_SIZE];
 116         if (!device)
 117                 return;
 118
 119   msg = g_string_sized_new (512);
 120   if (device->fix && device->status) {
 121     if (device->fix->fields & LOCATION_GPS_DEVICE_LATLONG_SET) {
 122       //g_print ("lat = %f, long = %f\n", device->fix->latitude, device->fix->longitude);
 123       g_string_append_printf (msg, "lat = %f, long = %f\n",
 124           device->fix->latitude,
 125           device->fix->longitude);
 126       if(fp)
 127         g_fprintf(fp, "\n<trkpt lat=\"%s\" lon=\"%s\">\n",
 128           g_ascii_formatd(sbuf1, sizeof(sbuf1), "%f", device->fix->latitude),
 129           g_ascii_formatd(sbuf2, sizeof(sbuf2), "%f", device->fix->longitude));
 130
 131       if (device->fix->fields & LOCATION_GPS_DEVICE_TIME_SET) {
 132         //g_print ("time = %f\n", device->fix->time);
 133         g_string_append_printf(msg, "time = %F\n", device->fix->time);
 134         if(fp) {
 135           gchar st[64];
 136           struct tm *tmp;
 137           time_t t = device->fix->time;
 138           tmp = localtime(&t);
 139           strftime(st, sizeof(st), "%FT%T%Z", tmp);
 140           /* FIXME Is this really correct */
 141           g_fprintf(fp, "<time>%s</time>\n", st);
 142         }
 143       }
 144
 145       if (device->fix->fields & LOCATION_GPS_DEVICE_ALTITUDE_SET) {
 146         //g_print ("alt = %f\n", device->fix->altitude);
 147         g_string_append_printf (msg, "alt = %f\n", device->fix->altitude);
 148         if(fp)
 149           g_fprintf(fp, "<ele>%s</ele>\n", g_ascii_formatd(sbuf1, sizeof(sbuf1), "%f", device->fix->altitude));
 150
 151       }
 152
 153       if (device->fix->fields & LOCATION_GPS_DEVICE_SPEED_SET) {
 154         //g_print ("speed = %f\n", device->fix->speed);
 155         g_string_append_printf (msg, "speed = %f, ", device->fix->speed);
 156         if(fp)
 157           g_fprintf(fp, "<speed>%s</speed>\n", g_ascii_formatd(sbuf1, sizeof(sbuf1), "%f", device->fix->speed));
 158       }
 159
 160       if (device->fix->fields & LOCATION_GPS_DEVICE_TRACK_SET) {
 161         //g_print ("track = %f\n", device->fix->track);
 162         g_string_append_printf (msg, "track = %f, ", device->fix->track);
 163         if(fp)
 164           g_fprintf(fp, "<course>%s</course>\n", g_ascii_formatd(sbuf1, sizeof(sbuf1), "%f", device->fix->track));
 165       }
 166
 167       if (device->fix->fields & LOCATION_GPS_DEVICE_CLIMB_SET) {
 168         //g_print ("climb = %f\n", device->fix->climb);
 169         g_string_append_printf (msg, "climb = %f\n", device->fix->climb);
 170       }
 171
 172       //g_print ("Accuracy values:\n");
 173       //g_print ("\tept = %e, eph = %e, epv = %e, epd = %e, "
 174       //    "eps = %e, epc = %e\n",
 175       //    device->fix->ept,
 176       //    device->fix->eph,
 177       //    device->fix->epv,
 178       //    device->fix->epd,
 179       //    device->fix->eps,
 180       //    device->fix->epc);
 181       if(fp) {
 182         g_fprintf(fp, "<hdop>%.1f</hdop>\n<vdop>%.1f</vdop>\n", device->fix->eph / 100.0, device->fix->epv);
 183         g_fprintf(fp, "</trkpt>\n");
 184       }
 185     }
 186   }
 187
 188         //g_print ("Satellites in view: %d\n", device->satellites_in_view);
 189         //g_print ("Satellites in use: %d\n", device->satellites_in_use);
 190   g_string_append_printf (msg, "Satellites = % 2d/% 2d\n", device->satellites_in_use, device->satellites_in_view);
 191         //g_print ("GPS status: %d\n", device->status);
 192         g_string_append_printf (msg, "GPS status: %d\n", device->status);
 193
 194   hildon_gtk_window_set_progress_indicator(GTK_WINDOW(app_data->window), device->status == LOCATION_GPS_DEVICE_STATUS_NO_FIX);
 195
 196
 197         //if (device->cell_info) {
 198         //      if (device->cell_info->flags & LOCATION_CELL_INFO_GSM_CELL_INFO_SET)
 199         //              g_print ("Mobile Coutry Code GSM: %d\n", device->cell_info->gsm_cell_info.mcc);
 200
 201         //      if (device->cell_info->flags & LOCATION_CELL_INFO_WCDMA_CELL_INFO_SET)
 202         //              g_print ("Mobile Coutry Code WCDMA: %d\n", device->cell_info->wcdma_cell_info.mcc);
 203         //}
 204
 205   gtk_label_set_text(info, msg->str);
 206   if(device->status != LOCATION_GPS_DEVICE_STATUS_NO_FIX)
 207     gtk_widget_set_sensitive(GTK_WIDGET(app_data->start_stop_button), TRUE);
 208   //gtk_widget_show(GTK_WIDGET(info));
 209   g_string_free(msg, TRUE);
 210 }
 211
 212 static void
 213 on_gps_error (LocationGPSDevice *device, gpointer data)
 214 {
 215   //AppData *app_data = data;
 216         g_error ("GPS error");
 217 }
 218
 219 static void
 220 on_gps_stop (LocationGPSDevice *device, gpointer data)
 221 {
 222   AppData *app_data = data;
 223   const gchar *msg = "GPS stopped";
 224   hildon_banner_show_information(GTK_WIDGET(app_data->window), NULL, msg);
 225         g_warning (msg);
 226 }
 227
 228 static void
 229 on_gps_start (LocationGPSDevice *device, gpointer data)
 230 {
 231   AppData *app_data = data;
 232   const gchar *msg = "GPS started";
 233   hildon_banner_show_information(GTK_WIDGET(app_data->window), NULL, msg);
 234         g_warning (msg);
 235 }
 236
 237 int main (int argc, char **argv)
 238 {
 239   AppData * data = g_new0 (AppData, 1);
 240
 241         hildon_gtk_init (&argc, &argv);
 242         LocationGPSDControl *control;
 243         LocationGPSDevice *device;
 244
 245   data->working_dir = g_strdup_printf("%s" G_DIR_SEPARATOR_S "MyDocs", g_get_home_dir());
 246   data->intermediate_gpx_data_filename = g_strdup_printf("%s" G_DIR_SEPARATOR_S ".gps-tracker.gpx", data->working_dir);
 247         data->program = hildon_program_get_instance ();
 248         g_set_application_name("GPS tracker");
 249
 250         data->window = HILDON_WINDOW(hildon_stackable_window_new ());
 251         hildon_program_add_window (data->program, HILDON_WINDOW (data->window));
 252
 253   data->main_vbox = (void*)gtk_vbox_new(FALSE, 0);
 254   data->btn_hbox = (void*)gtk_hbox_new(TRUE, 0);
 255
 256   data->start_stop_button = GTK_BUTTON (hildon_gtk_button_new (HILDON_SIZE_THUMB_HEIGHT | HILDON_SIZE_HALFSCREEN_WIDTH));
 257   gtk_button_set_label (data->start_stop_button, "Start");
 258   gtk_widget_set_sensitive(GTK_WIDGET(data->start_stop_button), FALSE);
 259   data->save_button = GTK_BUTTON (hildon_gtk_button_new (HILDON_SIZE_THUMB_HEIGHT | HILDON_SIZE_HALFSCREEN_WIDTH));
 260   gtk_button_set_label (data->save_button, "Save");
 261   gtk_widget_set_sensitive(GTK_WIDGET(data->save_button), FALSE);
 262   gtk_box_pack_start(GTK_BOX(data->btn_hbox), GTK_WIDGET(data->start_stop_button), FALSE, FALSE, 8);
 263   gtk_box_pack_start(GTK_BOX(data->btn_hbox), GTK_WIDGET(data->save_button), FALSE, FALSE, 8);
 264   gtk_box_pack_start(GTK_BOX(data->main_vbox), GTK_WIDGET(data->btn_hbox), FALSE, FALSE, 0);
 265   data->status_label = gtk_label_new("Waiting for GPS ...");
 266   gtk_box_pack_start_defaults(GTK_BOX(data->main_vbox), data->status_label);
 267         /* Add vbox to main window */
 268         gtk_container_add (GTK_CONTAINER (data->window), GTK_WIDGET(data->main_vbox));
 269
 270   g_signal_connect (G_OBJECT (data->save_button), "clicked", G_CALLBACK (cb_file_save), data);
 271   g_signal_connect (G_OBJECT (data->start_stop_button), "clicked", G_CALLBACK (cb_start_stop), data);
 272         g_signal_connect (G_OBJECT (data->window), "destroy",
 273                         G_CALLBACK (gtk_main_quit), NULL);
 274
 275         control = location_gpsd_control_get_default ();
 276   location_gpsd_control_start (control);
 277
 278         /*
 279          * Note that in real life one may want to use some other method and interval
 280          * than LOCATION_METHOD_USER_SELECTED and LOCATION_INTERVAL_DEFAULT,
 281          * respectively. For more information on possible values for these parameters
 282          * please see liblocation online documentation.
 283          */
 284         g_object_set (G_OBJECT (control),
 285                         "preferred-method", LOCATION_METHOD_USER_SELECTED,
 286                         "preferred-interval", LOCATION_INTERVAL_DEFAULT,
 287                         NULL);
 288
 289         device  = g_object_new (LOCATION_TYPE_GPS_DEVICE, NULL);
 290
 291         g_signal_connect (control, "error",             G_CALLBACK (on_gps_error),              data);
 292         g_signal_connect (control, "gpsd-running",      G_CALLBACK (on_gps_start),              data);
 293         g_signal_connect (control, "gpsd-stopped",      G_CALLBACK (on_gps_stop),               data);
 294         g_signal_connect (device,  "changed",           G_CALLBACK (on_gps_device_changed),     data);
 295
 296         gtk_widget_show_all (GTK_WIDGET (data->window));
 297
 298   hildon_gtk_window_set_progress_indicator(GTK_WINDOW(data->window), 1);
 299         gtk_main ();
 300
 301   location_gpsd_control_stop (control);
 302
 303   if(data->outf_p)
 304     fclose(data->outf_p);
 305   g_unlink(data->intermediate_gpx_data_filename);
 306   g_free(data->working_dir);
 307   g_free(data->intermediate_gpx_data_filename);
 308   g_free(data);
 309         g_object_unref (device);
 310         g_object_unref (control);
 311
 312         return 0;
 313 }