--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/qtmobility/examples/sensors/arrowkeys/main.cpp	Fri Jun 11 14:26:25 2010 +0300
@@ -0,0 +1,98 @@
+/****************************************************************************
+**
+** 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 <QtCore>
+#include <qaccelerometer.h>
+
+QTM_USE_NAMESPACE
+
+namespace arrows{
+    static const QString ARROW_UP="^", ARROW_DOWN="v", ARROW_LEFT="<",ARROW_RIGHT=">", ARROW_TO=".", ARROW_FROM="x";
+}
+
+class AccelerometerFilter : public QAccelerometerFilter
+{
+public:
+
+    bool filter(QAccelerometerReading *reading)
+    {
+        QString arrow = getArrowKey(reading->x(), reading->y(), reading->z());
+        if (arrow!=exArrow){
+            qDebug() << "direction:" << arrow;
+            exArrow = arrow;
+        }
+        return false; // don't store the reading in the sensor
+    }
+
+private:
+    QString exArrow;
+    static const qreal THRESHOLD;
+
+    QString getArrowKey(qreal x, qreal y, qreal z){
+
+        // axis_z: TO or FROM
+        if (abs(y)<THRESHOLD && abs(x)<THRESHOLD) return z>0?(arrows::ARROW_FROM):(arrows::ARROW_TO);
+
+        // axis_x: LEFT or RIGHT
+        if (abs(x)>abs(y)) return x>0?(arrows::ARROW_LEFT):(arrows::ARROW_RIGHT);
+
+        // axis_y: UP or DOWN
+        return y>0?(arrows::ARROW_DOWN):(arrows::ARROW_UP);
+    }
+
+    static qreal abs(qreal value) {return value<0?-value:value;}
+};
+
+const qreal AccelerometerFilter::THRESHOLD = 0.3;
+
+int main(int argc, char **argv)
+{
+    QCoreApplication app(argc, argv);
+    QAccelerometer sensor;
+    if (!sensor.connectToBackend()) {
+        qWarning("No Accelerometer available!");
+        return 1;
+    }
+    AccelerometerFilter filter;
+    sensor.addFilter(&filter);
+    sensor.start();
+
+    return app.exec();
+}