diff -r d39add9822e2 -r 5bfc169077b2 webengine/webkitutils/stmgesturefw/inc/pinchgesturerecogniser.h --- a/webengine/webkitutils/stmgesturefw/inc/pinchgesturerecogniser.h Tue Feb 02 00:56:45 2010 +0200 +++ /dev/null Thu Jan 01 00:00:00 1970 +0000 @@ -1,87 +0,0 @@ -/* -* Copyright (c) 2008 Nokia Corporation and/or its subsidiary(-ies). -* All rights reserved. -* This component and the accompanying materials are made available -* under the terms of the License "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:Pinch Gesture Recognizer -* -*/ - -#ifndef PINCHGESTURERECOGNISER_H_ -#define PINCHGESTURERECOGNISER_H_ - -#include "rt_gestureengineif.h" -#include -#include - -class CCoeControl ; - -namespace stmGesture -{ -/*! - * 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. - */ -NONSHARABLE_CLASS( CPinchGestureRecogniser ): public CGestureRecogniser -{ -public: - static const TGestureUid KUid = EGestureUidPinch; - - static CPinchGestureRecogniser* NewL(MGestureListener* aListener); - - virtual ~CPinchGestureRecogniser(); - /*! - * MGestureRecogniserIf methods - */ - virtual TGestureRecognitionState recognise(int numOfActiveStreams, MGestureEngineIf* ge) ; - virtual void release(MGestureEngineIf* ge) ; - - virtual TGestureUid 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; - -private: - CPinchGestureRecogniser(MGestureListener* aListener) ; - - void calculateZoomingLine() ; - float calculateDistance() ; - int adjustPinchMove(float& aPreviousDistance, float aNewDistance) ; - -private: - bool m_pinching ; - float m_pinchingspeed ; - TPoint m_pinchstart ; - TPoint m_pinchend ; - - float m_m ; - float m_b ; - - float m_ddistance ; - bool m_holdseen ; - TPoint m_holdseenAtPos ; - TTime m_holdseenAtTime ; -}; - -} - -#endif /* PINCHGESTURERECOGNISER_H_ */