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** contained in the Technology Preview License Agreement accompanying

** this package.

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

#include "dummycommon.h"

#ifdef Q_OS_WINCE

#include <windows.h>

// WINCE has <time.h> but using clock() gives a link error because

// the function isn't actually implemented.

#else

#include <time.h>

#endif

dummycommon::dummycommon(QSensor *sensor)

    : QSensorBackend(sensor)

    , m_timerid(0)

{

    setSupportedUpdatePolicies(QSensor::OccasionalUpdates |

            QSensor::InfrequentUpdates |

            QSensor::FrequentUpdates |

            QSensor::TimedUpdates |

            QSensor::PolledUpdates);

}

void dummycommon::start()

{

    if (m_timerid)

        return;

    int interval = m_sensor->updateInterval();

    switch (m_sensor->updatePolicy()) {

    case QSensor::OccasionalUpdates:

        interval = 5000;

        break;

    case QSensor::InfrequentUpdates:

        interval = 1000;

        break;

    case QSensor::Undefined: /* fall through */

    case QSensor::FrequentUpdates:

        interval = 100;

        break;

    case QSensor::TimedUpdates:

        // already set

        break;

    default:

        interval = 0;

        break;

    }

    if (interval)

        m_timerid = startTimer(interval);

}

void dummycommon::stop()

{

    if (m_timerid) {

        killTimer(m_timerid);

        m_timerid = 0;

    }

}

void dummycommon::timerEvent(QTimerEvent * /*event*/)

{

    poll();

}

qtimestamp getTimestamp()

{

#ifdef Q_OS_WINCE

    // This implementation is based on code found here:

    // http://social.msdn.microsoft.com/Forums/en/vssmartdevicesnative/thread/74870c6c-76c5-454c-8533-812cfca585f8

    HANDLE currentThread = GetCurrentThread();

    FILETIME creationTime, exitTime, kernalTime, userTime;

    GetThreadTimes(currentThread, &creationTime, &exitTime, &kernalTime, &userTime);

    ULARGE_INTEGER uli;

    uli.LowPart = userTime.dwLowDateTime;

    uli.HighPart = userTime.dwHighDateTime;

    ULONGLONG systemTimeInMS = uli.QuadPart/10000;

    return static_cast<qtimestamp>(systemTimeInMS);

#else

    return clock();

#endif

}