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

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#include <QtCore>

#include <qorientationsensor.h>

QTM_USE_NAMESPACE

class OrientationSensorFilter : public QOrientationFilter

{

public:

    qtimestamp stamp;

    bool filter(QOrientationReading *reading)

    {

        int diff = ( reading->timestamp() - stamp );

        stamp = reading->timestamp();

        QString output;

        switch (reading->orientation()) {

            case QOrientationReading::TopUp:     output = "Top up   "; break;

            case QOrientationReading::TopDown:   output = "Top down "; break;

            case QOrientationReading::LeftUp:    output = "Left up  "; break;

            case QOrientationReading::RightUp:   output = "Right up "; break;

            case QOrientationReading::FaceUp:    output = "Face up  "; break;

            case QOrientationReading::FaceDown:  output = "Face down"; break;

            case QOrientationReading::Undefined: output = "Undefined"; break;

            default: output = "Invalid enum value";

        }

        QTextStream out(stdout);

        out << "Orientation: " << output

            << QString(" (%1 ms since last, %2 Hz)").arg(diff / 1000, 5).arg( 1000000.0 / diff, 4, 'f', 1) << endl;

        return false; // don't store the reading in the sensor

    }

};

int main(int argc, char **argv)

{

    QCoreApplication app(argc, argv);

    QOrientationSensor sensor;

    if (!sensor.connectToBackend()) {

        qWarning("No orientation sensor available!");

        return 1;

    }

    OrientationSensorFilter filter;

    sensor.addFilter(&filter);

    sensor.start();

    return app.exec();

}