author | hgs |
Tue, 29 Jun 2010 00:46:29 -0400 | |
changeset 3 | 0954f5dd2cd0 |
parent 0 | 1450b09d0cfd |
child 16 | 3c88a81ff781 |
permissions | -rw-r--r-- |
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/* |
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* Copyright (c) 2010 Nokia Corporation and/or its subsidiary(-ies). |
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* All rights reserved. |
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* |
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* This program is free software: you can redistribute it and/or modify |
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* it under the terms of the GNU Lesser General Public License as published by |
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* the Free Software Foundation, version 2.1 of the License. |
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* |
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* This program is distributed in the hope that it will be useful, |
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* but WITHOUT ANY WARRANTY; without even the implied warranty of |
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
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* GNU Lesser General Public License for more details. |
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* |
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* You should have received a copy of the GNU Lesser General Public License |
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* along with this program. If not, |
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* see "http://www.gnu.org/licenses/old-licenses/lgpl-2.1.html/". |
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* |
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* Description: |
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* |
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*/ |
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#ifndef QSTMTAPGESTURERECOGNISER_H_ |
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#define QSTMTAPGESTURERECOGNISER_H_ |
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#include <qstmgestureengine_if.h> |
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#include <qstmgesture_if.h> |
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#include <qstmgesturelistener_if.h> |
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namespace qstmGesture |
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{ |
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/*! |
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* QStm_TapGestureRecogniser handles both tap and double tap recognition. |
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* Doubletap needs to work even if it crosses window boundaries, so |
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* QStm_TapGestureRecogniser is a "global" recogniser. The application |
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* creates only one instance of it (TODO later: how to use Singleton |
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* pattern in Symbian, seems to be tricky since we would need to have |
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* writable static variable to hold the one instance, so currently |
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* we need well-behaving app to handle this: the application must known |
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* the nature of this gesture recogniser). |
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* The different windows can add their callbacks, and when recognising tap |
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* the target window is stored so that proper callback can be called. |
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* Doubletap is reported either to the target of second tap, or if that windows parent |
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* has a doubletap listener, to that. |
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* Use separate listeners for tap and doubletap. |
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*/ |
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class QStm_TapGestureRecogniser : public QStm_GestureRecogniser |
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{ |
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Q_OBJECT |
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public: |
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static const QStm_GestureUid KUid = EGestureUidTap; |
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virtual ~QStm_TapGestureRecogniser(); |
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virtual QStm_GestureRecognitionState recognise(int numOfActiveStreams, QStm_GestureEngineIf* ge) ; |
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virtual void release(QStm_GestureEngineIf* ge) ; |
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virtual void enable(bool enabled) ; |
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virtual bool isEnabled() ; |
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virtual void setOwner(void* owner) ; |
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virtual QStm_GestureUid gestureUid() const { return KUid; } |
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/*! |
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* Additional methods to set up tap gesture recogniser: |
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* define the double tap timeout in microseconds. |
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* \param timeoutInMicroseconds |
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*/ |
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void setDoubleTapTimeout(int timeoutInMicroseconds) ; |
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/*! |
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* Additional methods to set up tap gesture recogniser: |
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* define how close the two taps need to be to be recognised |
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* as a double tap. |
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* \param rangeInMillimetres |
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*/ |
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void setDoubleTapRange(int rangeInMillimetres) ; |
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/*! |
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* Additional methods to set up tap gesture recogniser: |
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* Produce two separate taps or just ignore the first one |
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* if the second tap is outside range. |
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*/ |
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void ignoreFirstTap(bool ignore) ; |
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/*! |
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* Method to add a listener to tap gestures |
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*/ |
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void addTapListener(QStm_GestureListenerIf* listener, void* listenerOwner) ; |
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/*! |
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* Method to remove a listener from tap gestures |
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*/ |
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void removeTapListener(QStm_GestureListenerIf* listener, void* listenerOwner) ; |
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/*! |
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* Method to add a listener to doubletap gestures |
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*/ |
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void addDoubleTapListener(QStm_GestureListenerIf* listener, void* listenerOwner) ; |
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/*! |
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* Method to remove a listener from doubletap gestures |
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*/ |
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void removeDoubleTapListener(QStm_GestureListenerIf* listener, void* listenerOwner) ; |
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/*! |
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* for testing purposes we need to log the stuff somewhere... |
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*/ |
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virtual void enableLogging(bool loggingOn) ; |
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/*! |
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* The timer function to handle timeout for tap |
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*/ |
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QStm_TapGestureRecogniser(QStm_GestureListenerIf* listener) ; |
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public slots: |
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void timeoutCallback(); |
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private: |
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bool m_loggingenabled ; |
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bool isPointClose(const QPoint& firstPoint, const QPoint& secondPoint) ; |
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private: |
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void* m_powner ; // The owning control for this gesture |
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bool m_waitingforsecondtap ; |
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QPoint m_firstTapXY ; |
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void* m_firstTapTarget ; |
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float m_firstTapSpeed ; |
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int m_doubleTapTimeout ; |
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bool m_gestureEnabled ; |
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bool m_ignorefirst ; |
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int m_rangesizeInPixels ; |
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// use simple arrays to store the listeners and corresponding windows |
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QList<QStm_GestureListenerIf*> m_tapListeners ; |
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QList<void*> m_tapListenerWindows ; |
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QList<QStm_GestureListenerIf*> m_doubleTapListeners ; |
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QList<void*> m_doubleTapListenerWindows ; |
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QTimer m_timer; |
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}; |
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} // namespace |
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#endif /* QSTMTAPGESTURERECOGNISER_H_ */ |