"Save" functionality added

diff --git a/gps-tracker.c b/gps-tracker.c
index d92a8e6..680de10 100644 (file)
--- a/gps-tracker.c
+++ b/gps-tracker.c
@@ -1,4 +1,5 @@
 #include <glib.h>
+#include <glib/gstdio.h>
 
 #include <hildon/hildon.h>
 #include <hildon/hildon-file-chooser-dialog.h>
@@ -17,6 +18,7 @@ typedef struct {
     gboolean tracking_is_on;
     FILE *outf_p;
     gchar *working_dir;
+    gchar *intermediate_gpx_data_filename;
 } AppData;
 
 static gchar * interface_file_chooser (AppData * appdata, GtkFileChooserAction action)
@@ -43,16 +45,45 @@ static gchar * interface_file_chooser (AppData * appdata, GtkFileChooserAction a
     return filename;
 }
 
+static void write_gpx_header(FILE *fp)
+{
+  g_return_if_fail(fp);
+  fprintf(fp,
+      "<?xml version=\"1.0\" encoding=\"UTF-8\"?>\n"
+      "<gpx version=\"1.0\"\n"
+      "creator=\"convert2gpx.pl http://www.tangogps.org\"\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"
+      );
+}
+
+static void write_gpx_footer(FILE *fp)
+{
+  g_return_if_fail(fp);
+  fprintf(fp, "</trkseg>\n</trk>\n</gpx>\n");
+}
+
 static void cb_start_stop (GtkWidget * w, AppData * data)
 {
   data->tracking_is_on = !data->tracking_is_on;
-  if(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);
     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);
   }
-  else {
+  else { /* STOP pressed */
+    if(data->outf_p) {
+      write_gpx_footer(data->outf_p);
+      fclose(data->outf_p);
+      data->outf_p = NULL;
+    }
     gtk_button_set_label (data->start_stop_button, "Start");
     hildon_banner_show_information(GTK_WIDGET(data->window), NULL, "Tracking stopped");
+    gtk_widget_set_sensitive(GTK_WIDGET(data->save_button), TRUE);
   }
 }
 
@@ -62,11 +93,14 @@ static void cb_file_save (GtkWidget * w, AppData * data)
     filename = interface_file_chooser (data, GTK_FILE_CHOOSER_ACTION_SAVE);
 
     if (filename) {
-        //FILE * f = fopen (filename, "w");
-        //fprintf (f, "This file was generated by Hildon File Chooser example.");
-        //fclose (f);
+      if(g_file_test(data->intermediate_gpx_data_filename, G_FILE_TEST_IS_REGULAR | G_FILE_TEST_EXISTS)) {
+        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);
+      }
+      else {
+        hildon_banner_show_information(GTK_WIDGET(data->window), NULL, "Temp file not found");
+      }
     }
     g_free(filename);
 }
@@ -145,6 +179,8 @@ on_gps_device_changed (LocationGPSDevice *device, gpointer data)
        }
 
   gtk_label_set_text(info, msg->str);
+  if(device->status != LOCATION_GPS_DEVICE_STATUS_NO_FIX)
+    gtk_widget_set_sensitive(GTK_WIDGET(app_data->start_stop_button), TRUE);
   //gtk_widget_show(GTK_WIDGET(info));
   g_string_free(msg, TRUE);
 }
@@ -183,6 +219,7 @@ int main (int argc, char **argv)
        LocationGPSDevice *device;
 
   data->working_dir = g_strdup_printf("%s" G_DIR_SEPARATOR_S "MyDocs", g_get_home_dir());
+  data->intermediate_gpx_data_filename = g_strdup_printf("%s" G_DIR_SEPARATOR_S ".gps-tracker.gpx", data->working_dir);
        data->program = hildon_program_get_instance ();
        g_set_application_name("GPS tracker");
 
@@ -193,9 +230,11 @@ int main (int argc, char **argv)
   data->btn_hbox = (void*)gtk_hbox_new(TRUE, 0);
 
   data->start_stop_button = GTK_BUTTON (hildon_gtk_button_new (HILDON_SIZE_THUMB_HEIGHT | HILDON_SIZE_HALFSCREEN_WIDTH));
-  data->save_button = GTK_BUTTON (hildon_gtk_button_new (HILDON_SIZE_THUMB_HEIGHT | HILDON_SIZE_HALFSCREEN_WIDTH));
   gtk_button_set_label (data->start_stop_button, "Start");
+  gtk_widget_set_sensitive(GTK_WIDGET(data->start_stop_button), FALSE);
+  data->save_button = GTK_BUTTON (hildon_gtk_button_new (HILDON_SIZE_THUMB_HEIGHT | HILDON_SIZE_HALFSCREEN_WIDTH));
   gtk_button_set_label (data->save_button, "Save");
+  gtk_widget_set_sensitive(GTK_WIDGET(data->save_button), FALSE);
   gtk_box_pack_start(GTK_BOX(data->btn_hbox), GTK_WIDGET(data->start_stop_button), FALSE, FALSE, 8);
   gtk_box_pack_start(GTK_BOX(data->btn_hbox), GTK_WIDGET(data->save_button), FALSE, FALSE, 8);
   gtk_box_pack_start(GTK_BOX(data->main_vbox), GTK_WIDGET(data->btn_hbox), FALSE, FALSE, 0);
@@ -237,9 +276,13 @@ int main (int argc, char **argv)
 
   location_gpsd_control_stop (control);
 
+  if(data->outf_p)
+    fclose(data->outf_p);
+  g_unlink(data->intermediate_gpx_data_filename);
        g_object_unref (device);
        g_object_unref (control);
   g_free(data->working_dir);
+  g_free(data->intermediate_gpx_data_filename);
   g_free(data);
 
        return 0;