--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/webengine/webkitutils/stmgesturefw/inc/tapgesturerecogniser.h	Tue Feb 02 00:56:45 2010 +0200
@@ -0,0 +1,145 @@
+/*
+* 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: Tap Gesture Recognizer
+*
+*/
+
+#ifndef TAPGESTURERECOGNISER_H_
+#define TAPGESTURERECOGNISER_H_
+
+#include "rt_gestureengineif.h"
+#include <rt_gestureif.h>
+#include <rt_gesturelistener.h>
+
+class CCoeControl ;
+
+namespace stmGesture
+{
+
+/*!
+ * CTapGestureRecogniser handles both tap and double tap recognition.
+ * Doubletap needs to work even if it crosses window boundaries, so
+ * CTapGestureRecogniser is a "global" recogniser.  The application
+ * creates only one instance of it (TODO later: how to use Singleton
+ * pattern in Symbian, seems to be tricky since we would need to have
+ * writable static variable to hold the one instance, so currently
+ * we need well-behaving app to handle this: the application must known
+ * the nature of this gesture recogniser).
+ * The different windows can add their callbacks, and when recognising tap
+ * the target window is stored so that proper callback can be called.
+ * Doubletap is reported either to the target of second tap, or if that windows parent
+ * has a doubletap listener, to that.
+ * Use separate listeners for tap and doubletap.
+ */
+NONSHARABLE_CLASS( CTapGestureRecogniser ): public CTimer, public MGestureRecogniserIf
+{
+public:
+    static const TGestureUid KUid = EGestureUidTap;
+
+    /** Two-phase constructor */
+    static CTapGestureRecogniser* NewL(MGestureListener* aListener) ;
+
+    virtual ~CTapGestureRecogniser();
+
+    /*!
+     * MGestureRecogniserIf methods
+     */
+    virtual TGestureRecognitionState recognise(int numOfActiveStreams, MGestureEngineIf* ge) ;
+    virtual void release(MGestureEngineIf* ge) ;
+    virtual void enable(bool enabled) ;
+    virtual bool isEnabled() ;
+    virtual void setOwner(CCoeControl* owner) ;
+
+    virtual TGestureUid gestureUid() const
+        {
+        return KUid;
+        }
+
+    /*!
+     * Additional methods to set up tap gesture recogniser:
+     * define the double tap timeout in microseconds.
+     * \param timeoutInMicroseconds
+     */
+    void setDoubleTapTimeout(int timeoutInMicroseconds) ;
+
+    /*!
+     * Additional methods to set up tap gesture recogniser:
+     * define how close the two taps need to be to be recognised
+     * as a double tap.
+     * \param rangeInMillimetres
+     */
+    void setDoubleTapRange(int rangeInMillimetres) ;
+    /*!
+     * Additional methods to set up tap gesture recogniser:
+     * Produce two separate taps or just ignore the first one
+     * if the second tap is outside range.
+     */
+    void ignoreFirstTap(bool ignore) ;
+
+    /*!
+     * Method to add a listener to tap gestures
+     */
+    void addTapListener(MGestureListener* aListener, CCoeControl* listenerOwner) ;
+    /*!
+     * Method to remove a listener from tap gestures
+     */
+    void removeTapListener(MGestureListener* aListener, CCoeControl* listenerOwner) ;
+    /*!
+     * Method to add a listener to doubletap gestures
+     */
+    void addDoubleTapListener(MGestureListener* aListener, CCoeControl* listenerOwner) ;
+    /*!
+     * Method to remove a listener from doubletap gestures
+     */
+    void removeDoubleTapListener(MGestureListener* aListener, CCoeControl* listenerOwner) ;
+
+    /*!
+     * for testing purposes we need to log the stuff somewhere...
+     */
+public:
+    virtual void enableLogging(bool loggingOn) ;
+
+    /*!
+     * The timer function to handle timeout for tap
+     */
+    virtual void RunL() ;
+
+
+private:
+    CTapGestureRecogniser(MGestureListener* aListener) ;
+    bool m_loggingenabled ;
+    bool isSecondTapClose(const TPoint& secondPoint, const TPoint& firstPoint) ;
+private:
+    CCoeControl* m_powner ; // The owning control for this gesture
+    bool m_waitingforsecondtap ;
+    TPoint m_firstTapXY ;
+    CCoeControl* m_firstTapTarget ;
+    float m_firstTapSpeedX ;
+    float m_firstTapSpeedY ;
+    int m_doubleTapTimeout ;
+    bool m_gestureEnabled ;
+    bool m_ignorefirst ;
+    int  m_rangesizeInPixels ;
+    // use simple arrays to store the listeners and corresponding windows
+    RPointerArray<MGestureListener> m_tapListeners ;
+    RPointerArray<CCoeControl> m_tapListenerWindows ;
+    RPointerArray<MGestureListener> m_doubleTapListeners ;
+    RPointerArray<CCoeControl> m_doubleTapListenerWindows ;
+
+
+};
+
+} // namespace
+
+#endif /* TAPGESTURERECOGNISER_H_ */