git.maemo.org Git - jspeed/blob - src/location.cpp

   1 /*
   2  * This file is part of jSpeed.
   3  *
   4  * jSpeed is free software: you can redistribute it and/or modify
   5  * it under the terms of the GNU General Public License as published by
   6  * the Free Software Foundation, either version 3 of the License, or
   7  * (at your option) any later version.
   8  *
   9  * jSpeed is distributed in the hope that it will be useful,
  10  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  11  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  12  * GNU General Public License for more details.
  13  *
  14  * You should have received a copy of the GNU General Public License
  15  * along with jSpeed.  If not, see <http://www.gnu.org/licenses/>.
  16  *
  17  */
  18
  19 #include <QtCore/QDebug>
  20 #include "location.h"
  21
  22 namespace
  23 {
  24     static const double KM_MULTIPLIER = 1.0;
  25     static const double MILE_MULTIPLIER = 0.621371192;
  26 }
  27
  28 Location::Unit Location::unit_ = Location::KM;
  29
  30 Location::Location(QObject* parent): QObject(parent), started_(false),
  31 control_(0), device_(0)
  32 {
  33     g_type_init();
  34 }
  35
  36 Location::~Location()
  37 {
  38     end();
  39 }
  40
  41 void Location::start()
  42 {
  43     control_ = location_gpsd_control_get_default();
  44     device_ = (LocationGPSDevice*) g_object_new(LOCATION_TYPE_GPS_DEVICE, NULL);
  45
  46     g_object_set(G_OBJECT(control_),
  47                  "preferred-method", LOCATION_METHOD_USER_SELECTED,
  48                  "preferred-interval", LOCATION_INTERVAL_DEFAULT,
  49                  NULL);
  50
  51     g_signal_connect(control_, "error-verbose", G_CALLBACK(onError), this);
  52     g_signal_connect(device_, "changed", G_CALLBACK(onChanged), this);
  53
  54     location_gpsd_control_start(control_);
  55
  56     started_ = true;
  57 }
  58
  59 void Location::end()
  60 {
  61     if(!started_)
  62     {
  63         return;
  64     }
  65
  66     location_gpsd_control_stop(control_);
  67
  68     g_object_unref(device_);
  69     device_ = 0;
  70     g_object_unref(control_);
  71     control_ = 0;
  72
  73     started_ = false;
  74 }
  75
  76 void Location::setUnit(Location::Unit unit)
  77 {
  78     unit_ = unit;
  79 }
  80
  81 Location::Unit Location::getUnit()
  82 {
  83     return unit_;
  84 }
  85
  86 double Location::getUnitMultiplier()
  87 {
  88     if(unit_ == MILE)
  89     {
  90         return MILE_MULTIPLIER;
  91     }
  92
  93     return KM_MULTIPLIER;
  94 }
  95
  96 void Location::onChanged(LocationGPSDevice *device, gpointer data)
  97 {
  98     if(device && device->fix &&
  99        !(device->fix->fields & LOCATION_GPS_DEVICE_NONE_SET))
 100     {
 101
 102         Fix fix;
 103         fix.unit = unit_;
 104         fix.time = device->fix->time;
 105         fix.ept = device->fix->ept;
 106
 107         if (device->fix->fields & LOCATION_GPS_DEVICE_LATLONG_SET)
 108         {
 109             fix.latitude = device->fix->latitude;
 110             fix.longitude = device->fix->longitude;
 111             fix.eph = device->fix->eph;
 112         }
 113
 114         if(device->fix->fields & LOCATION_GPS_DEVICE_ALTITUDE_SET)
 115         {
 116             fix.altitude = device->fix->altitude;
 117             fix.epv = device->fix->epv;
 118         }
 119
 120         if(device->fix->fields & LOCATION_GPS_DEVICE_SPEED_SET)
 121         {
 122             fix.kmSpeed = device->fix->speed;
 123             fix.speed = device->fix->speed * getUnitMultiplier();
 124             fix.eps = device->fix->eps;
 125         }
 126
 127         if(device->fix->fields & LOCATION_GPS_DEVICE_TRACK_SET)
 128         {
 129             fix.track = device->fix->track;
 130             fix.epd = device->fix->epd;
 131         }
 132
 133         if(device->fix->fields & LOCATION_GPS_DEVICE_CLIMB_SET)
 134         {
 135             fix.climb = device->fix->climb;
 136             fix.epc = device->fix->epc;
 137         }
 138
 139         Location* meh = (Location*) data;
 140         meh->emit locationChanged(fix);
 141     }
 142 }
 143
 144 void Location::onError(LocationGPSDControl *control, LocationGPSDControlError error, gpointer data)
 145 {
 146     Q_UNUSED(control);
 147
 148     Error err = SYSTEM_ERROR;
 149
 150     switch(error)
 151     {
 152     case LOCATION_ERROR_USER_REJECTED_DIALOG:
 153         err = USER_REJECTED_DIALOG;
 154         break;
 155     case LOCATION_ERROR_USER_REJECTED_SETTINGS:
 156         err = USER_REJECTED_SETTINGS;
 157         break;
 158     case LOCATION_ERROR_BT_GPS_NOT_AVAILABLE:
 159         err = GPS_NOT_AVAILABLE;
 160         break;
 161     case LOCATION_ERROR_METHOD_NOT_ALLOWED_IN_OFFLINE_MODE:
 162         err = NOT_ALLOWED_IN_OFFLINE_MODE;
 163         break;
 164     case LOCATION_ERROR_SYSTEM:
 165         err = SYSTEM_ERROR;
 166         break;
 167     }
 168
 169     Location* meh = (Location*) data;
 170     meh->emit locationError(err);
 171 }
 172
 173 Location::Fix::Fix()
 174 {
 175     unit = KM;
 176     kmSpeed = 0.0;
 177     time = 0.0;
 178     ept = 0.0;
 179     latitude = 0.0;
 180     longitude = 0.0;
 181     eph = 0.0;
 182     altitude = 0.0;
 183     epv = 0.0;
 184     track = 0.0;
 185     epd = 0.0;
 186     speed = 0.0;
 187     eps = 0.0;
 188     climb = 0.0;
 189     epc = 0.0;
 190 }