/****************************************************************************

**

** Copyright (C) 2010 Nokia Corporation and/or its subsidiary(-ies).

** All rights reserved.

** Contact: Nokia Corporation (qt-info@nokia.com)

**

** This file is part of the Qt Mobility Components.

**

** $QT_BEGIN_LICENSE:BSD$

** You may use this file under the terms of the BSD license as follows:

**

** "Redistribution and use in source and binary forms, with or without

** modification, are permitted provided that the following conditions are

** met:

**   * Redistributions of source code must retain the above copyright

**     notice, this list of conditions and the following disclaimer.

**   * Redistributions in binary form must reproduce the above copyright

**     notice, this list of conditions and the following disclaimer in

**     the documentation and/or other materials provided with the

**     distribution.

**   * Neither the name of Nokia Corporation and its Subsidiary(-ies) nor

**     the names of its contributors may be used to endorse or promote

**     products derived from this software without specific prior written

**     permission.

**

** THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS

** "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT

** LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR

** A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT

** OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,

** SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT

** LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,

** DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY

** THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT

** (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE

** OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE."

** $QT_END_LICENSE$

**

****************************************************************************/

#include "gruesensorimpl.h"

#include <QDebug>

gruesensorimpl::gruesensorimpl(QSensor *sensor)

    : QSensorBackend(sensor)

{

    lightSensor = new QAmbientLightSensor(this);

    lightSensor->addFilter(this);

    lightSensor->connectToBackend();

    setReading<GrueSensorReading>(&m_reading);

    setDataRates(lightSensor);

    addOutputRange(0, 1, 0.1);

    setDescription(QLatin1String("Grue Sensor"));

}

void gruesensorimpl::start()

{

    lightSensor->setDataRate(sensor()->dataRate());

    lightSensor->start();

}

void gruesensorimpl::stop()

{

    lightSensor->stop();

}

bool gruesensorimpl::filter(QAmbientLightReading *reading)

{

    qreal chance;

    switch (reading->lightLevel()) {

    case QAmbientLightReading::Undefined:

        chance = 0.5; // No idea... call it 50/50

        break;

    case QAmbientLightReading::Dark:

        chance = 1.0;

        break;

    case QAmbientLightReading::Twilight:

        chance = 0.1;

        break;

    default:

        chance = 0.0;

        break;

    }

    if (chance != m_reading.chanceOfBeingEaten()) {

        m_reading.setTimestamp(reading->timestamp());

        m_reading.setChanceOfBeingEaten(chance);

        newReadingAvailable();

    }

    return true;

}