--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/qtmobility/examples/sensors/panorama/tapcontroller.cpp	Fri Jun 11 14:26:25 2010 +0300
@@ -0,0 +1,128 @@
+
+
+#include "tapcontroller.h"
+
+const qreal TapController::m_timewindow=1000;
+
+
+TapController::TapController(): m_step(20){}
+
+
+void TapController::startSensor()
+{
+    m_tap.connectToBackend();
+    m_tap.start();
+    connect(&m_tap, SIGNAL(readingChanged()), this, SLOT(update()));
+    m_accelerometer.connectToBackend();
+    m_accelerometer.start();
+    connect(&m_tap, SIGNAL(readingChanged()), this, SLOT(updateAcce()));
+}
+
+
+void TapController::stopSensor(){
+    m_tap.stop();
+    m_accelerometer.stop();
+}
+
+
+void TapController::update()
+{
+    int direction = m_tap.reading()->tapDirection();
+    switch(direction){
+    case QTapReading::X:
+    case QTapReading::X_Pos:
+    case QTapReading::X_Neg:
+        m_dy=0;
+        setDx(direction);
+        break;
+    case QTapReading::Y:
+    case QTapReading::Y_Pos:
+    case QTapReading::Y_Neg:
+        m_dx = 0;
+        setDy(direction);
+        break;
+    case QTapReading::Undefined:
+    case QTapReading::Z:
+    case QTapReading::Z_Pos:
+    case QTapReading::Z_Neg:
+    default:
+        return;
+    }    
+
+}
+
+
+void TapController::updateAcce()
+{
+    qreal accX = m_accelerometer.reading()->x();
+    qreal accY= m_accelerometer.reading()->y();
+    m_now = m_accelerometer.reading()->timestamp();
+
+    checkX(accX);
+    checkY(accY);
+}
+
+
+void TapController::updateCoordinates(){
+
+    if (m_now - m_timestampX > m_timewindow){
+        m_absMaxX = 0;
+        m_timestampX = m_now;
+    }
+
+    if (m_now - m_timestampY > m_timewindow){
+        m_absMaxY = 0;
+        m_timestampY = m_now;
+    }
+
+    if (m_dx!=0) m_dx = m_dx>0? m_dx-1: m_dx+1;
+    if (m_dy!=0) m_dy = m_dy>0? m_dy-1: m_dy+1;
+
+    m_x +=m_dx;
+    m_y +=m_dy;
+}
+
+
+void TapController::checkX(qreal accX){
+    if (qAbs(accX)>qAbs(m_absMaxX)){
+        m_absMaxX = accX;
+        m_timestampX = m_now;
+    }
+}
+
+
+void TapController::checkY(qreal accY){
+    if (qAbs(accY)>qAbs(m_absMaxY)){
+        m_absMaxY = accY;
+        m_timestampY = m_now;
+    }
+}
+
+
+void TapController::setDx(int direction){
+    switch(direction){
+    case QTapReading::X:
+        m_dx = m_absMaxX>0?m_step : -m_step;
+        break;
+    case QTapReading::X_Pos:
+        m_dx = m_step;
+        break;
+    case QTapReading::X_Neg:
+        m_dx = -m_step;
+        break;
+    }
+}
+
+void TapController::setDy(int direction){
+    switch(direction){
+    case QTapReading::Y:
+        m_dy = m_absMaxY>0?m_step : - m_step;
+        break;
+    case QTapReading::Y_Pos:
+        m_dy = m_step;
+        break;
+    case QTapReading::Y_Neg:
+        m_dy = -m_step;
+        break;
+    }
+}