--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/qstmgesturelib/recognisers/qstmtapgesturerecogniser.h	Tue May 04 12:39:35 2010 +0300
@@ -0,0 +1,136 @@
+/*
+* 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 QSTMTAPGESTURERECOGNISER_H_
+#define QSTMTAPGESTURERECOGNISER_H_
+
+#include <qstmgestureengine_if.h>
+#include <qstmgesture_if.h>
+#include <qstmgesturelistener_if.h>
+
+namespace qstmGesture
+{
+
+/*!
+ * QStm_TapGestureRecogniser handles both tap and double tap recognition.
+ * Doubletap needs to work even if it crosses window boundaries, so
+ * QStm_TapGestureRecogniser 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.
+ */
+class QStm_TapGestureRecogniser : public QStm_GestureRecogniser
+{
+	Q_OBJECT
+public:
+    static const QStm_GestureUid KUid = EGestureUidTap;
+
+    virtual ~QStm_TapGestureRecogniser();
+
+    virtual QStm_GestureRecognitionState recognise(int numOfActiveStreams, QStm_GestureEngineIf* ge) ;
+    virtual void release(QStm_GestureEngineIf* ge) ;
+    virtual void enable(bool enabled) ;
+    virtual bool isEnabled() ;
+    virtual void setOwner(void* owner) ;
+
+    virtual QStm_GestureUid 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(QStm_GestureListenerIf* listener, void* listenerOwner) ;
+    /*!
+     * Method to remove a listener from tap gestures
+     */
+    void removeTapListener(QStm_GestureListenerIf* listener, void* listenerOwner) ;
+    /*!
+     * Method to add a listener to doubletap gestures
+     */
+    void addDoubleTapListener(QStm_GestureListenerIf* listener, void* listenerOwner) ;
+    /*!
+     * Method to remove a listener from doubletap gestures
+     */
+    void removeDoubleTapListener(QStm_GestureListenerIf* listener, void* listenerOwner) ;
+
+    /*!
+     * for testing purposes we need to log the stuff somewhere...
+     */
+
+    virtual void enableLogging(bool loggingOn) ;
+
+    /*!
+     * The timer function to handle timeout for tap
+     */
+
+    QStm_TapGestureRecogniser(QStm_GestureListenerIf* listener) ;
+    
+public slots:
+    void timeoutCallback();
+    
+private:
+    bool m_loggingenabled ;
+    bool isPointClose(const QPoint& firstPoint, const QPoint& secondPoint) ;
+private:
+    void* m_powner ; // The owning control for this gesture
+    bool m_waitingforsecondtap ;
+    QPoint m_firstTapXY ;
+    void* m_firstTapTarget ;
+    float m_firstTapSpeed ;
+    int m_doubleTapTimeout ;
+    bool m_gestureEnabled ;
+    bool m_ignorefirst ;
+    int  m_rangesizeInPixels ;
+    // use simple arrays to store the listeners and corresponding windows
+    QList<QStm_GestureListenerIf*>  m_tapListeners ;
+    QList<void*>                    m_tapListenerWindows ;
+    QList<QStm_GestureListenerIf*>  m_doubleTapListeners ;
+    QList<void*>                    m_doubleTapListenerWindows ;
+    QTimer        m_timer;
+};
+
+} // namespace
+
+#endif /* QSTMTAPGESTURERECOGNISER_H_ */