C++ QGeoPositionInfo::timestamp方法代码示例

void GpsLocation::newPosition(QGeoPositionInfo pos)
{
	int64_t lastTime = 0;
	QGeoCoordinate lastCoord;
	int nr = m_trackers.count();
	if (nr) {
		gpsTracker gt = m_trackers.last();
		lastCoord.setLatitude(gt.latitude.udeg / 1000000.0);
		lastCoord.setLongitude(gt.longitude.udeg / 1000000.0);
		lastTime = gt.when;
	}
	// if we are waiting for a position update or
	// if we have no record stored or if at least the configured minimum
	// time has passed or we moved at least the configured minimum distance
	int64_t delta = (int64_t)pos.timestamp().toTime_t() + gettimezoneoffset() - lastTime;
	if (!nr || waitingForPosition || delta > prefs.time_threshold ||
	    lastCoord.distanceTo(pos.coordinate()) > prefs.distance_threshold) {
		QString msg("received new position %1 after delta %2 threshold %3 (now %4 last %5)");
		status(qPrintable(msg.arg(pos.coordinate().toString()).arg(delta).arg(prefs.time_threshold).arg(pos.timestamp().toString()).arg(QDateTime().fromMSecsSinceEpoch(lastTime * 1000).toString())));
		waitingForPosition = false;
		acquiredPosition();
		gpsTracker gt;
		gt.when = pos.timestamp().toTime_t();
		gt.when += gettimezoneoffset(gt.when);
		gt.latitude.udeg = lrint(pos.coordinate().latitude() * 1000000);
		gt.longitude.udeg = lrint(pos.coordinate().longitude() * 1000000);
		addFixToStorage(gt);
		gpsTracker gtNew = m_trackers.last();
		qDebug() << "newest fix is now at" << QDateTime().fromMSecsSinceEpoch(gtNew.when - gettimezoneoffset(gtNew.when) * 1000).toString();
	}
}

void
QTMLocationProvider::positionUpdated(const QGeoPositionInfo &geoPosition)
{
    if (!geoPosition.isValid()) {
        NS_WARNING("Invalida geoposition received");
        return;
    }

    QGeoCoordinate coord = geoPosition.coordinate();
    double latitude = coord.latitude();
    double longitude = coord.longitude();
    double altitude = coord.altitude();
    double accuracy = geoPosition.attribute(QGeoPositionInfo::HorizontalAccuracy);
    double altitudeAccuracy = geoPosition.attribute(QGeoPositionInfo::VerticalAccuracy);
    double heading = geoPosition.attribute(QGeoPositionInfo::Direction);

    bool providesSpeed = geoPosition.hasAttribute(QGeoPositionInfo::GroundSpeed);
    double speed = geoPosition.attribute(QGeoPositionInfo::GroundSpeed);

    nsRefPtr<nsGeoPosition> p =
        new nsGeoPosition(latitude, longitude,
                          altitude, accuracy,
                          altitudeAccuracy, heading,
                          speed, geoPosition.timestamp().toTime_t());
    if (mCallback) {
        mCallback->Update(p);
    }
}

void GeolocationClientQt::positionUpdated(const QGeoPositionInfo &geoPosition)
{
    if (!geoPosition.isValid())
        return;

    QGeoCoordinate coord = geoPosition.coordinate();
    double latitude = coord.latitude();
    double longitude = coord.longitude();
    bool providesAltitude = (geoPosition.coordinate().type() == QGeoCoordinate::Coordinate3D);
    double altitude = coord.altitude();

    double accuracy = geoPosition.attribute(QGeoPositionInfo::HorizontalAccuracy);

    bool providesAltitudeAccuracy = geoPosition.hasAttribute(QGeoPositionInfo::VerticalAccuracy);
    double altitudeAccuracy = geoPosition.attribute(QGeoPositionInfo::VerticalAccuracy);

    bool providesHeading =  geoPosition.hasAttribute(QGeoPositionInfo::Direction);
    double heading = geoPosition.attribute(QGeoPositionInfo::Direction);

    bool providesSpeed = geoPosition.hasAttribute(QGeoPositionInfo::GroundSpeed);
    double speed = geoPosition.attribute(QGeoPositionInfo::GroundSpeed);

    double timeStampInSeconds = geoPosition.timestamp().toMSecsSinceEpoch() / 1000;

    m_lastPosition = GeolocationPosition::create(timeStampInSeconds, latitude, longitude,
                                                 accuracy, providesAltitude, altitude,
                                                 providesAltitudeAccuracy, altitudeAccuracy,
                                                 providesHeading, heading, providesSpeed, speed);

    WebCore::Page* page = QWebPagePrivate::core(m_page);
    page->geolocationController()->positionChanged(m_lastPosition.get());
}

void KTracks::on_acSelect_triggered()
{
   QModelIndexList selection = ui->tvTracks->selectionModel()->selectedRows();
   QAbstractItemModel *model = ui->tvTracks->model();

   if (!selection.isEmpty()) {
       QList<QGeoPositionInfo> trackList;
       trackList.clear();
       trackList = sql.selTrack(model->data(model->index(selection.at(0).row(),0)).toInt());

       ui->cpPlot->clearGraphs();
       ui->cpPlot->addGraph();

       QGeoPositionInfo tp;
       QVector<double> x;
       QVector<double> y;
       int cnt = trackList.count();
       x.resize(cnt);
       y.resize(cnt);

       //options
       int pType;
       if (ui->miAltitude->isChecked()) {
           ui->cpPlot->yAxis->setLabel("Altitude [m]");
           pType = 1; }
       if (ui->miDistance->isChecked()) {
           ui->cpPlot->yAxis->setLabel("Distance [m]");
           pType = 2; }
       if (ui->miSpeed->isChecked()) {
           ui->cpPlot->yAxis->setLabel("Speed [m/s]");
           pType = 3; }
       ui->cpPlot->xAxis->setLabel("time [hh:mm:ss]");

       for (int i=0; i<cnt; i++) {
           tp = trackList.value(i);
           x[i] = tp.timestamp().toTime_t();
           switch (pType) {
             case 1: {
               y[i] = tp.coordinate().altitude();
               break; }
             case 2: {
               y[i] = tp.coordinate().distanceTo(trackList.value(0).coordinate());
               break; }
             case 3: {
               y[i] = tp.attribute(QGeoPositionInfo::GroundSpeed);
               break; }
           } //switch
       } //for to

       ui->cpPlot->graph(0)->setData(x,y);
       // set axes ranges, so we see all data:
       ui->cpPlot->xAxis->setRange(x[0],x[cnt-1]);
       qSort(y.begin(), y.end());
       ui->cpPlot->yAxis->setRange(y.first(),y.last());
       //repaint
       ui->cpPlot->replot();

   } //selection.isempty
}

void QGeoPositionInfoSourceAndroid::requestTimeout()
{
    AndroidPositioning::stopUpdates(androidClassKeyForSingleRequest);
    //no queued update to process -> timeout
    const int count = queuedSingleUpdates.count();

    if (!count) {
        emit updateTimeout();
        return;
    }

    //pick best
    QGeoPositionInfo best = queuedSingleUpdates[0];
    for (int i = 1; i < count; i++) {
        const QGeoPositionInfo info = queuedSingleUpdates[i];

        //anything newer by 20s is always better
        const int timeDelta = best.timestamp().secsTo(info.timestamp());
        if (abs(timeDelta) > 20) {
            if (timeDelta > 0)
                best = info;
            continue;
        }

        //compare accuracy
        if (info.hasAttribute(QGeoPositionInfo::HorizontalAccuracy) &&
                info.hasAttribute(QGeoPositionInfo::HorizontalAccuracy))
        {
            best = info.attribute(QGeoPositionInfo::HorizontalAccuracy) <
                    best.attribute(QGeoPositionInfo::HorizontalAccuracy) ? info : best;
            continue;
        }

        //prefer info with accuracy information
        if (info.hasAttribute(QGeoPositionInfo::HorizontalAccuracy))
            best = info;
    }

    queuedSingleUpdates.clear();
    emit positionUpdated(best);
}

void PushN8PhoneGPS::positionUpdated(QGeoPositionInfo info)
{
    if(info.isValid() && !gpsOnline) {
        emit connected();
        gpsOnline = true;
        qDebug() << "GPS now connected";
    }

//    if(info.coordinate().isValid() && !gpsOnline)
//    {
//        //emitting connected signal when receiving first reading
//        emit connected();
//        gpsOnline = true;

//    } else if(gpsOnline) {

//        gpsOnline = false;
//        emit disconnected();

//    }

    if(!streaming)
        return;

    if(info.timestamp().isValid()) { //&& info.coordinate().isValid()

        QDateTime correctedTstamp;
        correctedTstamp = info.timestamp().addSecs(UTCOffset);//ugly localisation!
        info.setTimestamp(correctedTstamp);

        //double checking speed

        NPushGpsTick * newGPSTick = new NPushGpsTick(info);

        if(receivers(SIGNAL(reading_ready(NPushLogTick*))) > 0)
        {
            emit reading_ready(newGPSTick);
        } else {
            delete newGPSTick;

void QNmeaSimulatedReader::processNextSentence()
{
    QGeoPositionInfo info;
    bool hasFix = false;
    int timeToNextUpdate = -1;
    QTime prevTime;
    if (m_pendingUpdates.size() > 0)
        prevTime = m_pendingUpdates.head().info.timestamp().time();

    // find the next update with a valid time (as long as the time is valid,
    // we can calculate when the update should be emitted)
    while (m_proxy->m_device && m_proxy->m_device->bytesAvailable() > 0) {
        char buf[1024];
        qint64 size = m_proxy->m_device->readLine(buf, sizeof(buf));
        if (size <= 0)
            continue;
        if (m_proxy->parsePosInfoFromNmeaData(buf, size, &info, &hasFix)) {
            QTime time = info.timestamp().time();
            if (time.isValid()) {
                if (!prevTime.isValid()) {
                    timeToNextUpdate = 0;
                    break;
                }
                timeToNextUpdate = prevTime.msecsTo(time);
                if (timeToNextUpdate >= 0)
                    break;
            } else {
                timeToNextUpdate = 0;
                break;
            }
        }
    }

    if (timeToNextUpdate < 0)
        return;

    m_pendingUpdates.dequeue();

    QPendingGeoPositionInfo pending;
    pending.info = info;
    pending.hasFix = hasFix;
    m_pendingUpdates.enqueue(pending);
    m_currTimerId = startTimer(timeToNextUpdate);
}

void tst_QNmeaPositionInfoSource::startUpdates_waitForValidDateTime()
{
    // Tests that the class does not emit an update until it receives a
    // sentences with a valid date *and* time. All sentences before this
    // should be ignored, and any sentences received after this that do
    // not have a date should use the known date.

    QFETCH(QByteArray, bytes);
    QFETCH(QList<QDateTime>, dateTimes);
    QFETCH(QList<bool>, expectHorizontalAccuracy);
    QFETCH(QList<bool>, expectVerticalAccuracy);

    QNmeaPositionInfoSource source(m_mode);
    source.setUserEquivalentRangeError(5.1);
    QNmeaPositionInfoSourceProxyFactory factory;
    QNmeaPositionInfoSourceProxy *proxy = static_cast<QNmeaPositionInfoSourceProxy*>(factory.createProxy(&source));

    QSignalSpy spy(proxy->source(), SIGNAL(positionUpdated(QGeoPositionInfo)));
    proxy->source()->startUpdates();

    proxy->feedBytes(bytes);
    QTRY_COMPARE(spy.count(), dateTimes.count());

    for (int i=0; i<spy.count(); i++) {
        QGeoPositionInfo pInfo = spy[i][0].value<QGeoPositionInfo>();

        QCOMPARE(pInfo.timestamp(), dateTimes[i]);

        // Generated GGA/GSA sentences have hard coded HDOP of 3.5, which corrisponds to a
        // horizontal accuracy of 35.7, for the user equivalent range error of 5.1 set above.
        QCOMPARE(pInfo.hasAttribute(QGeoPositionInfo::HorizontalAccuracy),
                 expectHorizontalAccuracy[i]);
        if (pInfo.hasAttribute(QGeoPositionInfo::HorizontalAccuracy))
            QVERIFY(qFuzzyCompare(pInfo.attribute(QGeoPositionInfo::HorizontalAccuracy), 35.7));

        // Generate GSA sentences have hard coded VDOP of 4.0, which corrisponds to a vertical
        // accuracy of 40.8, for the user equivalent range error of 5.1 set above.
        QCOMPARE(pInfo.hasAttribute(QGeoPositionInfo::VerticalAccuracy),
                 expectVerticalAccuracy[i]);
        if (pInfo.hasAttribute(QGeoPositionInfo::VerticalAccuracy))
            QVERIFY(qFuzzyCompare(pInfo.attribute(QGeoPositionInfo::VerticalAccuracy), 40.8));
    }
}

bool QNmeaSimulatedReader::setFirstDateTime()
{
    // find the first update with valid date and time
    QGeoPositionInfo update;
    bool hasFix = false;
    while (m_proxy->m_device->bytesAvailable() > 0) {
        char buf[1024];
        qint64 size = m_proxy->m_device->readLine(buf, sizeof(buf));
        if (size <= 0)
            continue;
        bool ok = m_proxy->parsePosInfoFromNmeaData(buf, size, &update, &hasFix);
        if (ok && update.timestamp().isValid()) {
            QPendingGeoPositionInfo pending;
            pending.info = update;
            pending.hasFix = hasFix;
            m_pendingUpdates.enqueue(pending);
            return true;
        }
    }
    return false;
}

int CLbsPositionLogger::Write(const QGeoPositionInfo &info)
{
    int nRet = 0;

    QString szContext;
    szContext = QString::number(info.timestamp().toUTC().toTime_t()) + ","
            + QString::number(info.coordinate().latitude()) + ","
            + QString::number(info.coordinate().longitude()) + ",";
    if(!qIsNaN(info.coordinate().altitude()))
        szContext += QString::number(info.coordinate().altitude());
    szContext += ",";
    if(info.hasAttribute(QGeoPositionInfo::HorizontalAccuracy))
        szContext += QString::number(info.attribute(QGeoPositionInfo::HorizontalAccuracy));
    szContext += ",";
    if(info.hasAttribute(QGeoPositionInfo::Direction))
        szContext += QString::number(info.attribute(QGeoPositionInfo::Direction));
    szContext += ",";
    if(info.hasAttribute(QGeoPositionInfo::GroundSpeed))
        szContext += QString::number(info.attribute(QGeoPositionInfo::GroundSpeed));
    szContext += "\n";
    m_logFile.write(szContext.toStdString().c_str(), szContext.length());
    return nRet;
}

void JSKitGeolocation::handlePosition(const QGeoPositionInfo &pos)
{
    qCDebug(l) << "got position at" << pos.timestamp() << "type" << pos.coordinate().type();

    if (_watches.empty()) {
        qCWarning(l) << "got position update but no one is watching";
        _source->stopUpdates(); // Just in case.
        return;
    }

    QJSValue obj = buildPositionObject(pos);

    for (auto it = _watches.begin(); it != _watches.end(); /*no adv*/) {
        invokeCallback(it->successCallback, obj);

        if (it->once) {
            it = _watches.erase(it);
        } else {
            it->timer.restart();
            ++it;
        }
    }
}

void ClientApplication::positionUpdated(const QGeoPositionInfo &info)
{
    textEdit->append(QString("Position updated: Date/time = %1, Coordinate = %2").arg(info.timestamp().toString()).arg(info.coordinate().toString()));
}

void TRMainWindow::newLocationInfoReceived(const QGeoPositionInfo positionInfo)
{
    QGeoCoordinate currentCoords = positionInfo.coordinate();
    if(m_lastKnownPosition || !(currentCoords == *m_lastKnownPosition))
    {
        // We need to write to the file, let's initialize it
        if(m_outputKMLFile == NULL)
        {
            // File initialization
            QString timeStamp = positionInfo.timestamp().toString(Qt::ISODate);
            QString fileTimeStamp = positionInfo.timestamp().toString("hhmmssddMMyy");
            m_outputKMLFile = new QFile("c://Data//trackroute_"+fileTimeStamp+".kml");
            m_outputKMLFile->open(QIODevice::WriteOnly | QIODevice::Text);
            // File writer initialization
            if(m_kmlFileWriter == NULL)
            {
                // Header
                m_kmlFileWriter = new QXmlStreamWriter(m_outputKMLFile);
                m_kmlFileWriter->writeStartDocument();
                m_kmlFileWriter->writeNamespace("http://www.opengis.net/kml/2.2","kml");
                // Document
                m_kmlFileWriter->writeStartElement("Document");
                m_kmlFileWriter->writeTextElement("name","TrackRoute Path File");
                m_kmlFileWriter->writeTextElement("description","Pathfile generated by Trackroute on: "+timeStamp);
                // Style
                m_kmlFileWriter->writeStartElement("Style");
                m_kmlFileWriter->writeAttribute("id","yellowLineGreenPoly");
                // LineStyle
                m_kmlFileWriter->writeStartElement("LineStyle");
                m_kmlFileWriter->writeTextElement("color","7f00ffff");
                m_kmlFileWriter->writeTextElement("width","4");
                m_kmlFileWriter->writeEndElement();
                // PolyStyle
                m_kmlFileWriter->writeStartElement("PolyStyle");
                m_kmlFileWriter->writeTextElement("color","7f00ff00");
                m_kmlFileWriter->writeEndElement();
                // End Style
                m_kmlFileWriter->writeEndElement();
                // Placemark
                m_kmlFileWriter->writeStartElement("Placemark");
                m_kmlFileWriter->writeTextElement("name","TrackRoute Path "+timeStamp);
                m_kmlFileWriter->writeTextElement("description","Path generated by Trackroute on: "+timeStamp);
                m_kmlFileWriter->writeTextElement("styleUrl","#yellowLineGreenPoly");
                // LineString
                m_kmlFileWriter->writeStartElement("LineString");
                m_kmlFileWriter->writeTextElement("extrude","1");
                m_kmlFileWriter->writeTextElement("tessellate","1");
                m_kmlFileWriter->writeTextElement("altitudeMode","absolute");
                // Coordinates
                m_kmlFileWriter->writeStartElement("coordinates");
            }
        }

        // Update data
        m_numberOfUpdatesReceived++;
        m_currentSpeed = positionInfo.attribute(QGeoPositionInfo::GroundSpeed);
        m_currentSpeed = m_currentSpeed > 0 ? m_currentSpeed:0;
        m_totalSpeed += m_currentSpeed;
        m_averageSpeed = m_totalSpeed / m_numberOfUpdatesReceived;
        QString coordString = currentCoords.toString();

        // Update UI
        ui->latLonDataLabel->setText(coordString.left(coordString.lastIndexOf(",")));
        ui->altitudeDataLabel->setText(QString::number(currentCoords.altitude())+" m");
        ui->wptNumberDataLabel->setText(QString::number(m_numberOfUpdatesReceived));
        ui->currentSpdDataLabel->setText(QString::number(m_currentSpeed)+" km/h");
        ui->averageSpdDataLabel->setText(QString::number(m_averageSpeed)+" km/h");

        // Write to the KML file
        QString locationData = QString::number(currentCoords.latitude()).append(",").append(QString::number(currentCoords.longitude()))
                               .append(",").append(QString::number(currentCoords.altitude())).append(" ");
        m_kmlFileWriter->writeCharacters(locationData);
        m_outputKMLFile->flush();
    }
    m_lastKnownPosition = &currentCoords;
}

void QDeclarativePosition::setPosition(const QGeoPositionInfo &info)
{
    // timestamp
    const QDateTime pTimestamp = m_info.timestamp();
    const QDateTime timestamp = info.timestamp();
    bool emitTimestampChanged = pTimestamp != timestamp;

    // coordinate
    const QGeoCoordinate pCoordinate = m_info.coordinate();
    const QGeoCoordinate coordinate = info.coordinate();
    bool emitCoordinateChanged = pCoordinate != coordinate;
    bool emitLatitudeValidChanged = exclusiveNaN(pCoordinate.latitude(), coordinate.latitude());
    bool emitLongitudeValidChanged = exclusiveNaN(pCoordinate.longitude(), coordinate.longitude());
    bool emitAltitudeValidChanged = exclusiveNaN(pCoordinate.altitude(), coordinate.altitude());

    // direction
    const qreal pDirection = m_info.attribute(QGeoPositionInfo::Direction);
    const qreal direction = info.attribute(QGeoPositionInfo::Direction);
    bool emitDirectionChanged = !equalOrNaN(pDirection, direction);
    bool emitDirectionValidChanged = exclusiveNaN(pDirection, direction);

    // ground speed
    const qreal pSpeed = m_info.attribute(QGeoPositionInfo::GroundSpeed);
    const qreal speed = info.attribute(QGeoPositionInfo::GroundSpeed);
    bool emitSpeedChanged = !equalOrNaN(pSpeed, speed);
    bool emitSpeedValidChanged = exclusiveNaN(pSpeed, speed);

    // vertical speed
    const qreal pVerticalSpeed = m_info.attribute(QGeoPositionInfo::VerticalSpeed);
    const qreal verticalSpeed = info.attribute(QGeoPositionInfo::VerticalSpeed);
    bool emitVerticalSpeedChanged = !equalOrNaN(pVerticalSpeed, verticalSpeed);
    bool emitVerticalSpeedValidChanged = exclusiveNaN(pVerticalSpeed, verticalSpeed);

    // magnetic variation
    const qreal pMagneticVariation = m_info.attribute(QGeoPositionInfo::MagneticVariation);
    const qreal magneticVariation = info.attribute(QGeoPositionInfo::MagneticVariation);
    bool emitMagneticVariationChanged = !equalOrNaN(pMagneticVariation, magneticVariation);
    bool emitMagneticVariationValidChanged = exclusiveNaN(pMagneticVariation, magneticVariation);

    // horizontal accuracy
    const qreal pHorizontalAccuracy = m_info.attribute(QGeoPositionInfo::HorizontalAccuracy);
    const qreal horizontalAccuracy = info.attribute(QGeoPositionInfo::HorizontalAccuracy);
    bool emitHorizontalAccuracyChanged = !equalOrNaN(pHorizontalAccuracy, horizontalAccuracy);
    bool emitHorizontalAccuracyValidChanged = exclusiveNaN(pHorizontalAccuracy, horizontalAccuracy);

    // vertical accuracy
    const qreal pVerticalAccuracy = m_info.attribute(QGeoPositionInfo::VerticalAccuracy);
    const qreal verticalAccuracy = info.attribute(QGeoPositionInfo::VerticalAccuracy);
    bool emitVerticalAccuracyChanged = !equalOrNaN(pVerticalAccuracy, verticalAccuracy);
    bool emitVerticalAccuracyValidChanged = exclusiveNaN(pVerticalAccuracy, verticalAccuracy);

    m_info = info;

    if (emitTimestampChanged)
        emit timestampChanged();
    if (emitCoordinateChanged)
        emit coordinateChanged();
    if (emitLatitudeValidChanged)
        emit latitudeValidChanged();
    if (emitLongitudeValidChanged)
        emit longitudeValidChanged();
    if (emitAltitudeValidChanged)
        emit altitudeValidChanged();
    if (emitDirectionChanged)
        emit directionChanged();
    if (emitDirectionValidChanged)
        emit directionValidChanged();
    if (emitSpeedChanged)
        emit speedChanged();
    if (emitSpeedValidChanged)
        emit speedValidChanged();
    if (emitVerticalSpeedChanged)
        emit verticalSpeedChanged();
    if (emitVerticalSpeedValidChanged)
        emit verticalSpeedValidChanged();
    if (emitHorizontalAccuracyChanged)
        emit horizontalAccuracyChanged();
    if (emitHorizontalAccuracyValidChanged)
        emit horizontalAccuracyValidChanged();
    if (emitVerticalAccuracyChanged)
        emit verticalAccuracyChanged();
    if (emitVerticalAccuracyValidChanged)
        emit verticalAccuracyValidChanged();
    if (emitMagneticVariationChanged)
        emit magneticVariationChanged();
    if (emitMagneticVariationValidChanged)
        emit magneticVariationValidChanged();
}