Disable "save" button after file is saved because temp file is moved
[gps-tracker] / gps-tracker.c
index 90f08b7..8b8736a 100644 (file)
@@ -21,9 +21,11 @@ typedef struct {
     GtkWidget *speed_val_label, *track_val_label, *climb_val_label;
     //GtkWidget *wp_label;
     GtkButton *wp_set_btn;
-    GString *wp_marker_str;
-    gboolean tracking_is_on;
+    GString *wp_marker_str, *waypoint_block_str;
+    gboolean tracking_is_on, has_fix;
     FILE *outf_p;
+    guint points_recorded_in_current_segment;
+    LocationGPSDeviceStatus last_device_status;
     gchar *working_dir;
     gchar *intermediate_gpx_data_filename;
 } AppData;
@@ -52,24 +54,31 @@ static gchar * interface_file_chooser (AppData * appdata, GtkFileChooserAction a
     return filename;
 }
 
-static void write_gpx_header(FILE *fp)
+static void write_gpx_header(AppData *app_data)
 {
+  FILE *fp = app_data->outf_p;
   g_return_if_fail(fp);
   g_fprintf(fp,
       "<?xml version=\"1.0\" encoding=\"UTF-8\"?>\n"
       "<gpx version=\"1.0\"\n"
-      "creator=\"GPS tracker for Maemo\"\n"
+      "creator=\"GPS Træcker for Maemo\"\n"
       "xmlns:xsi=\"http://www.w3.org/2001/XMLSchema-instance\"\n"
       "xmlns=\"http://www.topografix.com/GPX/1/0\"\n"
       "xsi:schemaLocation=\"http://www.topografix.com/GPX/1/0 http://www.topografix.com/GPX/1/0/gpx.xsd\">\n"
-      "<trk>\n<trkseg>\n"
+      "<trk>\n"
+      "<name>gps-tracker</name>\n"
+      "<desc>This is a track recorded by 'GPS Træcker' on Maemo</desc>\n"
+      "<trkseg>\n"
       );
 }
 
-static void write_gpx_footer(FILE *fp)
+static void write_gpx_footer(AppData *app_data)
 {
+  FILE *fp = app_data->outf_p;
   g_return_if_fail(fp);
-  g_fprintf(fp, "</trkseg>\n</trk>\n</gpx>\n");
+  g_fprintf(fp, "</trkseg>\n</trk>\n");
+  g_fprintf(fp, app_data->waypoint_block_str->str);
+  g_fprintf(fp, "</gpx>\n");
 }
 
 static void cb_wp_set_btn (GtkWidget * w, AppData * data)
@@ -92,15 +101,19 @@ static void cb_start_stop (GtkWidget * w, AppData * data)
   data->tracking_is_on = !data->tracking_is_on;
   if(data->tracking_is_on) { /* START pressed */
     data->outf_p = fopen(data->intermediate_gpx_data_filename, "w");
-    write_gpx_header(data->outf_p);
+    data->points_recorded_in_current_segment = 0;
+    data->last_device_status = LOCATION_GPS_DEVICE_STATUS_NO_FIX;
+    write_gpx_header(data);
     //hildon_banner_show_information(GTK_WIDGET(data->window), NULL, "Tracking started");
     gtk_button_set_label (data->start_stop_button, "Stop");
     gtk_widget_set_sensitive(GTK_WIDGET(data->save_button), FALSE);
     gtk_widget_set_sensitive(GTK_WIDGET(data->wp_set_btn), TRUE);
   }
   else { /* STOP pressed */
+    data->points_recorded_in_current_segment = 0;
+    data->last_device_status = LOCATION_GPS_DEVICE_STATUS_NO_FIX;
     if(data->outf_p) {
-      write_gpx_footer(data->outf_p);
+      write_gpx_footer(data);
       fclose(data->outf_p);
       data->outf_p = NULL;
     }
@@ -110,6 +123,7 @@ static void cb_start_stop (GtkWidget * w, AppData * data)
     gtk_widget_set_sensitive(GTK_WIDGET(data->wp_set_btn), FALSE);
   }
   g_string_truncate(data->wp_marker_str, 0);
+  g_string_truncate(data->waypoint_block_str, 0);
 }
 
 static void cb_file_save (GtkWidget * w, AppData * data)
@@ -122,6 +136,7 @@ static void cb_file_save (GtkWidget * w, AppData * data)
         g_rename(data->intermediate_gpx_data_filename, filename);
         //g_print ("File saved as %s\n", filename);
         hildon_banner_show_information(GTK_WIDGET(data->window), NULL, filename);
+        gtk_widget_set_sensitive(GTK_WIDGET(data->save_button), FALSE);
       }
       else {
         hildon_banner_show_information(GTK_WIDGET(data->window), NULL, "Temp file not found");
@@ -130,7 +145,7 @@ static void cb_file_save (GtkWidget * w, AppData * data)
     g_free(filename);
 }
 
-#define SPAN_PREFIX "<span font_family='monospace'>"
+#define SPAN_PREFIX "<span font_family=\"monospace\" size=\"large\" weight=\"bold\">"
 #define SPAN_POST   "</span>"
 #define LABEL_FMT(s) SPAN_PREFIX s SPAN_POST
 #define CHANGE_LABEL(w,fmt,val) change_label_text(w, SPAN_PREFIX fmt SPAN_POST, val)
@@ -154,22 +169,44 @@ static void on_gps_device_changed (LocationGPSDevice *device, gpointer data)
        if (!device)
                return;
 
-  if (device->fix && device->status) {
+  /* if there is no fix, or we are recording (fp != NULL), but the fix is so
+   * bad that it is a 2D fix only, with no time set then do not
+   * record any longer */
+  if ((device->status == LOCATION_GPS_DEVICE_STATUS_NO_FIX) ||
+      (device->fix && fp &&
+       (! device->fix->fields & LOCATION_GPS_DEVICE_TIME_SET) &&
+       (device->fix->mode == LOCATION_GPS_DEVICE_MODE_2D))) {
+    app_data->has_fix = FALSE;
+    //hildon_banner_show_information(GTK_WIDGET(app_data->window), NULL, "WARNING: Lost fix");
+    app_data->last_device_status = LOCATION_GPS_DEVICE_STATUS_NO_FIX;
+  }
+  else if (device->fix) {
+    //g_print("mode=%d stat=%d\n", device->fix->mode, device->status);
     if (device->fix->fields & LOCATION_GPS_DEVICE_LATLONG_SET) {
+      app_data->has_fix = TRUE; /* fix found again */
       //g_print ("lat = %f, long = %f\n", device->fix->latitude, device->fix->longitude);
       CHANGE_LABEL(app_data->lat_val_label, "% 9.6f", device->fix->latitude);
       CHANGE_LABEL(app_data->lon_val_label, "% 9.6f", device->fix->longitude);
       if(fp) {
+        if(app_data->last_device_status != device->status) {
+          if(app_data->points_recorded_in_current_segment)
+            g_fprintf(fp, "\n</trkseg>\n<trkseg>\n");
+          app_data->last_device_status = device->status;
+        }
         g_fprintf(fp, "\n<trkpt lat=\"%s\" lon=\"%s\">\n",
-          g_ascii_formatd(sbuf1, sizeof(sbuf1), "%f", device->fix->latitude),
-          g_ascii_formatd(sbuf2, sizeof(sbuf2), "%f", device->fix->longitude));
+            g_ascii_formatd(sbuf1, sizeof(sbuf1), "%f", device->fix->latitude),
+            g_ascii_formatd(sbuf2, sizeof(sbuf2), "%f", device->fix->longitude));
         if(app_data->wp_marker_str->len) {
           g_fprintf(fp, "<name>%s</name>\n", app_data->wp_marker_str->str);
           hildon_banner_show_information(GTK_WIDGET(app_data->window), NULL, app_data->wp_marker_str->str);
+          g_string_append_printf(app_data->waypoint_block_str, "<wpt lat=\"%s\" lon=\"%s\"><name>%s</name></wpt>\n",
+              sbuf1, sbuf2, app_data->wp_marker_str->str);
           g_string_truncate(app_data->wp_marker_str, 0);
         }
       }
 
+      app_data->points_recorded_in_current_segment++;
+
       if (device->fix->fields & LOCATION_GPS_DEVICE_TIME_SET) {
         //g_print ("time = %f\n", device->fix->time);
         if(fp) {
@@ -192,11 +229,13 @@ static void on_gps_device_changed (LocationGPSDevice *device, gpointer data)
 
       if (device->fix->fields & LOCATION_GPS_DEVICE_ALTITUDE_SET) {
         //g_print ("alt = %f\n", device->fix->altitude);
-        CHANGE_LABEL(app_data->alt_val_label, "% 5.0f", device->fix->altitude);
+        CHANGE_LABEL(app_data->alt_val_label, "% 5.0fm", device->fix->altitude);
         if(fp)
           g_fprintf(fp, "<ele>%s</ele>\n", g_ascii_formatd(sbuf1, sizeof(sbuf1), "%.1f", device->fix->altitude));
 
       }
+      else
+        CHANGE_LABEL(app_data->alt_val_label, " ?", NULL);
 
       if (device->fix->fields & LOCATION_GPS_DEVICE_SPEED_SET) {
         //g_print ("speed = %f\n", device->fix->speed);
@@ -204,6 +243,8 @@ static void on_gps_device_changed (LocationGPSDevice *device, gpointer data)
         if(fp)
           g_fprintf(fp, "<speed>%s</speed>\n", g_ascii_formatd(sbuf1, sizeof(sbuf1), "%.1f", device->fix->speed));
       }
+      else
+        CHANGE_LABEL(app_data->speed_val_label, " ?", NULL);
 
       if (device->fix->fields & LOCATION_GPS_DEVICE_TRACK_SET) {
         //g_print ("track = %f\n", device->fix->track);
@@ -211,11 +252,15 @@ static void on_gps_device_changed (LocationGPSDevice *device, gpointer data)
         if(fp)
           g_fprintf(fp, "<course>%s</course>\n", g_ascii_formatd(sbuf1, sizeof(sbuf1), "%.1f", device->fix->track));
       }
+      else
+        CHANGE_LABEL(app_data->track_val_label, " ?", NULL);
 
       if (device->fix->fields & LOCATION_GPS_DEVICE_CLIMB_SET) {
         //g_print ("climb = %f\n", device->fix->climb);
-        CHANGE_LABEL(app_data->climb_val_label, "%+4.0f°", device->fix->climb);
+        CHANGE_LABEL(app_data->climb_val_label, "%+6.2fm/s", device->fix->climb);
       }
+      else
+        CHANGE_LABEL(app_data->climb_val_label, " ?", NULL);
 
       //g_print ("Accuracy values:\n");
       //g_print ("\tept = %e, eph = %e, epv = %e, epd = %e, "
@@ -234,15 +279,16 @@ static void on_gps_device_changed (LocationGPSDevice *device, gpointer data)
       }
     }
   }
+  else {
+    app_data->has_fix = FALSE;
+    app_data->last_device_status = LOCATION_GPS_DEVICE_STATUS_NO_FIX;
+  }
        
        //g_print ("Satellites in view: %d\n", device->satellites_in_view);
        //g_print ("Satellites in use: %d\n", device->satellites_in_use);
   CHANGE_LABEL2(app_data->sat_val_label, "%3d/%2d", device->satellites_in_use, device->satellites_in_view);
        //g_print ("GPS status: %d\n", device->status);
 
-  hildon_gtk_window_set_progress_indicator(GTK_WINDOW(app_data->window), device->status == LOCATION_GPS_DEVICE_STATUS_NO_FIX);
-
-
        //if (device->cell_info) {
        //      if (device->cell_info->flags & LOCATION_CELL_INFO_GSM_CELL_INFO_SET)
        //              g_print ("Mobile Coutry Code GSM: %d\n", device->cell_info->gsm_cell_info.mcc);
@@ -251,8 +297,19 @@ static void on_gps_device_changed (LocationGPSDevice *device, gpointer data)
        //              g_print ("Mobile Coutry Code WCDMA: %d\n", device->cell_info->wcdma_cell_info.mcc);
        //}
 
-  if(device->status != LOCATION_GPS_DEVICE_STATUS_NO_FIX)
+  if(app_data->has_fix) {
+    hildon_gtk_window_set_progress_indicator(GTK_WINDOW(app_data->window), 0);
     gtk_widget_set_sensitive(GTK_WIDGET(app_data->start_stop_button), TRUE);
+  }
+  else {
+    hildon_gtk_window_set_progress_indicator(GTK_WINDOW(app_data->window), 1);
+    CHANGE_LABEL(app_data->lat_val_label, " ?", NULL);
+    CHANGE_LABEL(app_data->lon_val_label, " ?", NULL);
+    CHANGE_LABEL(app_data->alt_val_label, " ?", NULL);
+    CHANGE_LABEL(app_data->speed_val_label, " ?", NULL);
+    CHANGE_LABEL(app_data->track_val_label, " ?", NULL);
+    CHANGE_LABEL(app_data->climb_val_label, " ?", NULL);
+  }
 }
 
 static void
@@ -297,6 +354,7 @@ int main (int argc, char **argv)
        hildon_program_add_window (data->program, HILDON_WINDOW (data->window));
 
   data->wp_marker_str = g_string_sized_new(64);
+  data->waypoint_block_str = g_string_sized_new(32<<10);
   data->main_vbox = (gpointer)gtk_vbox_new(FALSE, 0);
   data->loc_hbox = (gpointer)gtk_hbox_new(FALSE, 0);
   data->loc_gps_data_table = (gpointer)gtk_table_new(4, 2, FALSE);
@@ -316,9 +374,9 @@ int main (int argc, char **argv)
     gtk_table_attach_defaults(data->loc_gps_data_table, lon_label, 0, 1, 1, 2);
     gtk_table_attach_defaults(data->loc_gps_data_table, alt_label, 0, 1, 2, 3);
     gtk_table_attach_defaults(data->loc_gps_data_table, sat_label, 0, 1, 3, 4);
-    data->lat_val_label = gtk_label_new(" ?");
-    data->lon_val_label = gtk_label_new(" ?");
-    data->alt_val_label = gtk_label_new(" ?");
+    data->lat_val_label = gtk_label_new(NULL);
+    data->lon_val_label = gtk_label_new(NULL);
+    data->alt_val_label = gtk_label_new(NULL);
     data->sat_val_label = gtk_label_new(" 0/ 0");
     gtk_misc_set_alignment (GTK_MISC (data->lat_val_label), 0, 0.5);
     gtk_misc_set_alignment (GTK_MISC (data->lon_val_label), 0, 0.5);
@@ -342,7 +400,7 @@ int main (int argc, char **argv)
   {
     GtkWidget *alignment_track = gtk_alignment_new (0.5, 0.5, 1, 1);
     GtkWidget *speed_label = gtk_label_new("Speed:");
-    GtkWidget *track_label = gtk_label_new("Heading:");
+    GtkWidget *track_label = gtk_label_new("Orientation:");
     GtkWidget *climb_label = gtk_label_new("Climb:");
     gtk_alignment_set_padding(GTK_ALIGNMENT(alignment_track), 0,0,0,0);
     gtk_misc_set_alignment (GTK_MISC (speed_label), 1, 0.5);
@@ -351,9 +409,10 @@ int main (int argc, char **argv)
     gtk_table_attach_defaults(data->loc_track_data_table, speed_label, 0, 1, 0, 1);
     gtk_table_attach_defaults(data->loc_track_data_table, track_label, 0, 1, 1, 2);
     gtk_table_attach_defaults(data->loc_track_data_table, climb_label, 0, 1, 2, 3);
-    data->speed_val_label = gtk_label_new(" ?");
-    data->track_val_label = gtk_label_new(" ?");
-    data->climb_val_label = gtk_label_new(" ?");
+    data->speed_val_label = gtk_label_new(NULL);
+    CHANGE_LABEL(data->speed_val_label, "% 5.1fkm/h", 0.);
+    data->track_val_label = gtk_label_new(NULL);
+    data->climb_val_label = gtk_label_new(NULL);
     gtk_misc_set_alignment (GTK_MISC (data->speed_val_label), 0, 0.5);
     gtk_misc_set_alignment (GTK_MISC (data->track_val_label), 0, 0.5);
     gtk_misc_set_alignment (GTK_MISC (data->climb_val_label), 0, 0.5);
@@ -436,6 +495,7 @@ int main (int argc, char **argv)
   g_free(data->working_dir);
   g_free(data->intermediate_gpx_data_filename);
   g_string_free(data->wp_marker_str, TRUE);
+  g_string_free(data->waypoint_block_str, TRUE);
   g_free(data);
        g_object_unref (device);
        g_object_unref (control);