git.maemo.org Git - googlelatitude/blob - src/daemon/gps.cpp

   1 #include "gps.h"
   2
   3 #include <QDebug>
   4
   5 #ifdef Q_WS_MAEMO_5
   6
   7 bool ValidQReal(qreal value);
   8
   9 GpsMaemo5::GpsMaemo5(LocationGPSDControlInterval location_interval,
  10                      LocationGPSDControlMethod location_method,
  11                      QObject *parent) :
  12            QObject(parent)
  13 {
  14     latitude = 0;
  15     longitude = 0;
  16     accuracy = 0;
  17
  18     control = location_gpsd_control_get_default();
  19     device = (LocationGPSDevice*) g_object_new(LOCATION_TYPE_GPS_DEVICE, NULL);
  20
  21     updateGPSConfig (location_interval, location_method);
  22
  23     g_signal_connect(device, "changed", G_CALLBACK(GpsMaemo5_changed), this);
  24 }
  25
  26 void GpsMaemo5::enable()
  27 {
  28     location_gpsd_control_start(control);
  29 }
  30 void GpsMaemo5::disable()
  31 {
  32     location_gpsd_control_stop(control);
  33 }
  34
  35 void GpsMaemo5::updateGPSConfig (LocationGPSDControlInterval location_interval,
  36                                 LocationGPSDControlMethod location_method)
  37 {
  38     g_object_set(G_OBJECT(control), "preferred-interval", location_interval, NULL);
  39     g_object_set(G_OBJECT(control), "preferred-method", location_method, NULL);
  40     qDebug() << "preferred-interval: " << location_interval;
  41     qDebug() << "preferred-method: " << location_method;
  42 }
  43
  44 void GpsMaemo5_changed(LocationGPSDevice *device, GpsMaemo5 *gps) {
  45     if (device->fix) {
  46         if (device->fix->fields) {
  47             if ( !ValidQReal(gps->device->fix->eph/100.) )
  48                 return;
  49             g_print("lat = %f, long = %f, eph = %f\n", gps->device->fix->latitude, gps->device->fix->longitude, gps->device->fix->eph/100.);
  50             gps->latitude = gps->device->fix->latitude;
  51             gps->longitude = gps->device->fix->longitude;
  52             gps->accuracy = gps->device->fix->eph/100.;
  53             emit gps->fix();
  54         }
  55     }
  56 }
  57
  58 bool ValidQReal(qreal value)
  59 {
  60     if (value != value){
  61         return false;
  62     }
  63     else if (value > std::numeric_limits<qreal>::max()){
  64         return false;
  65     }
  66     else if (value < -std::numeric_limits<qreal>::max()){
  67         return false;
  68     }
  69     else
  70         return true;
  71 }
  72
  73 #endif // Q_WS_MAEMO_5