--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/qstmgesturelib/recognisers/qstmpinchgesturerecogniser.h	Tue May 04 12:39:35 2010 +0300
@@ -0,0 +1,78 @@
+/*
+* Copyright (c) 2010 Nokia Corporation and/or its subsidiary(-ies).
+* All rights reserved.
+* This component and the accompanying materials are made available
+* under the terms of "Eclipse Public License v1.0"
+* which accompanies this distribution, and is available
+* at the URL "http://www.eclipse.org/legal/epl-v10.html".
+*
+* Initial Contributors:
+* Nokia Corporation - initial contribution.
+*
+* Contributors:
+*
+* Description: 
+*
+*/
+
+
+#ifndef QSTMPINCHGESTURERECOGNISER_H_
+#define QSTMPINCHGESTURERECOGNISER_H_
+
+#include <qstmgestureengine_if.h>
+#include <qstmgesture_if.h>
+#include <qstmgesturelistener_if.h>
+
+
+namespace qstmGesture
+{
+/*!
+ * Recognise pinching gesture. !!! very experimental !!!
+ * It seems that in capacitive touch in Symbian 9.4 touching with two
+ * fingers causes fast EDrag events which are far from each other.
+ * This gesture recogniser tries to use that feature
+ * to determine when the gestures looks like a pinch.
+ * Would requires a lot of tuning to be really useful, if at all possible.
+ * With current implementation it is easy to zoom in but
+ * almost impossible to zoom out.
+ */
+class QStm_PinchGestureRecogniser : public QStm_GestureRecogniser
+{
+public:
+    static const QStm_GestureUid KUid = EGestureUidPinch;
+
+    virtual ~QStm_PinchGestureRecogniser();
+    virtual QStm_GestureRecognitionState recognise(int numOfActiveStreams, QStm_GestureEngineIf* ge) ;
+    virtual void release(QStm_GestureEngineIf* ge) ;
+
+    virtual QStm_GestureUid gestureUid() const { return KUid; }
+
+    /* define the pinch triggering as speed value */
+    /* after EHold has been seen, then any move which is faster than this will enter pinch gesture */
+    /* note that the value varies depending on techology, speed is measured as pixels / ms */
+    void setPinchingSpeed(float aSpeed) /*__SOFTFP */;
+
+    QStm_PinchGestureRecogniser(QStm_GestureListenerIf* listener) ;
+
+    void calculateZoomingLine() ;
+    float calculateDistance() ;
+    int adjustPinchMove(float& aPreviousDistance, float aNewDistance) ;
+
+private:
+    bool     m_pinching ;
+    float    m_pinchingspeed ;
+    QPoint   m_pinchstart ;
+    QPoint   m_pinchend ;
+
+    float m_m ;
+    float m_b ;
+
+    float   m_ddistance ;
+    bool    m_holdseen ;
+    QPoint  m_holdseenAtPos ;
+    QTime   m_holdseenAtTime ;
+};
+
+}
+
+#endif /* QSTMPINCHGESTURERECOGNISER_H_ */