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

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

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     9 ** $QT_BEGIN_LICENSE:BSD$

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

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    39 ****************************************************************************/

    40 

    41 #include <QtCore>

    42 #include <qtapsensor.h>

    43 

    44 QTM_USE_NAMESPACE

    45 

    46 class TapSensorFilter : public QTapFilter

    47 {

    48 public:

    49     qtimestamp stamp;

    50     bool filter(QTapReading *reading)

    51     {

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

    53         stamp = reading->timestamp();

    54         QString output;

    55         switch (reading->tapDirection()) {

    56             case QTapReading::X:         output = "X";         break;

    57             case QTapReading::Y:         output = "Y";         break;

    58             case QTapReading::Z:         output = "Z";         break;

    59             case QTapReading::X_Pos:     output = "X pos";     break;

    60             case QTapReading::Y_Pos:     output = "Y pos";     break;

    61             case QTapReading::Z_Pos:     output = "Z pos";     break;

    62             case QTapReading::X_Neg:     output = "X neg";     break;

    63             case QTapReading::Y_Neg:     output = "Y neg";     break;

    64             case QTapReading::Z_Neg:     output = "Z neg";     break;

    65             case QTapReading::Undefined: output = "Undefined"; break;

    66             default: output = "Invalid enum value";

    67         }

    68         QTextStream out(stdout);

    69         out << "Tap: ";

    70         if(reading->isDoubleTap())

    71             out << "Double ";

    72         else

    73             out << "Single ";

    74         out << QString(" (%1 ms since last, %2 Hz)").arg(diff / 1000, 5).arg( 1000000.0 / diff, 3, 'f', 1) << endl;

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

    76     }

    77 };

    78 

    79 int main(int argc, char **argv)

    80 {

    81     QCoreApplication app(argc, argv);

    82     QStringList args = app.arguments();

    83     int rate_place = args.indexOf("-r");

    84     int rate_val = 0;

    85     if (rate_place != -1)

    86         rate_val = args.at(rate_place + 1).toInt();

    87 

    88     QTapSensor doublesensor;

    89     if (rate_val > 0) {

    90         doublesensor.setDataRate(rate_val);

    91     }

    92     TapSensorFilter filter;

    93     doublesensor.addFilter(&filter);

    94     doublesensor.start();

    95     if (!doublesensor.isActive()) {

    96         qWarning("Tapsensor (double) didn't start!");

    97         return 1;

    98     }

    99 

   100     QTapSensor singlesensor;

   101     if (rate_val > 0) {

   102         singlesensor.setDataRate(rate_val);

   103     }

   104     singlesensor.addFilter(&filter);

   105     singlesensor.start();

   106     if (!singlesensor.isActive()) {

   107         qWarning("Tapsensor (single) didn't start!");

   108         return 1;

   109     }

   110 

   111     return app.exec();

   112 }