--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/akntouchgesturefw/inc/akntouchgesturefwdragrecognizer.h	Tue Feb 02 01:00:49 2010 +0200
@@ -0,0 +1,190 @@
+/*
+* Copyright (c) 2009 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:  Drag touch gesture recognizer.
+*
+*/
+
+#ifndef C_AKNTOUCHGESTUREFWDRAGRECOGNIZER_H
+#define C_AKNTOUCHGESTUREFWDRAGRECOGNIZER_H
+
+
+#include "akntouchgesturefwbaserecognizer.h"
+
+namespace AknTouchGestureFw {
+
+/**
+ *  Drag touch gesture recognizer.
+ *
+ *  @lib akntouchgesturefw
+ *  @since S60 v5.2
+ */
+NONSHARABLE_CLASS( CAknTouchGestureFwDragRecognizer )
+    : public CAknTouchGestureFwBaseRecognizer
+    {
+
+public:
+
+    /**
+     * Two-phased constructor.
+     *
+     * @param  aEngine  The gesture recognition engine.
+     */
+    static CAknTouchGestureFwDragRecognizer* NewL(
+            CAknTouchGestureFwRecognitionEngine& aEngine );
+
+    /**
+     * Two-phased constructor.
+     *
+     * @param  aEngine  The gesture recognition engine.
+     */
+    static CAknTouchGestureFwDragRecognizer* NewLC(
+            CAknTouchGestureFwRecognitionEngine& aEngine );
+
+    /**
+     * Destructor.
+     */
+    virtual ~CAknTouchGestureFwDragRecognizer();
+
+public: // From base class CAknTouchGestureFwBaseRecognizer.
+
+    /**
+     * Returns the recognizer's gesture group.
+     *
+     * @return Gesture group.
+     */
+    TAknTouchGestureFwGroup GestureGroup() const;
+
+    /**
+     * Cancels gesture recognition.
+     */
+    void CancelRecognizing();
+
+    /**
+     * Handles single pointer event.
+     *
+     * @param  aPointerData  Pointer event related data.
+     */
+    void HandleSinglePointerEventL( const TPointerEventData& aPointerData );
+
+    /**
+     * Handles multi pointer event.
+     *
+     * @param  aPointerData            Pointer event related data.
+     * @param  aFirstPointerPosition   First pointer position.
+     * @param  aSecondPointerPosition  Second pointer position.
+     */
+    void HandleMultiPointerEventL( const TPointerEventData& aPointerData,
+                                   const TPoint& aFirstPointerPosition,
+                                   const TPoint& aSecondPointerPosition );
+
+private:
+
+    /**
+     * C++ constructor.
+     *
+     * @param  aEngine  The gesture recognition engine.
+     */
+    CAknTouchGestureFwDragRecognizer(
+            CAknTouchGestureFwRecognitionEngine& aEngine );
+
+    /**
+     * Starts single-touch recognition.
+     *
+     * @param  aPointerPos  Current pointer position.
+     */
+    void StartSingleRecognizing( const TPoint& aPointerPos );
+
+    /**
+     * Handles single-touch recognition cycle.
+     * Called for every drag event when one pointer is down.
+     *
+     * @param  aPointerPos  New position of pointer.
+     */
+    void SingleRecognizeL( const TPoint& aPointerPos );
+
+    /**
+     * Completes single-touch recognition.
+     */
+    void CompleteSingleRecognizingL();
+
+    /**
+     * Asks engine to send drag event to observer.
+     *
+     * @param  aGestureState  Drag gesture state.
+     */
+    void SendDragEventL( TAknTouchGestureFwState aGestureState );
+
+    /**
+     * Resets the recognizer.
+     */
+    void Reset();
+
+    /**
+     * Returns current gesture position.
+     *
+     * @return Current gesture position.
+     */
+    TPoint CurrentPos() const;
+
+    /**
+     * Returns previous gesture position.
+     *
+     * @return Previous gesture position.
+     */
+    TPoint PreviousPos() const;
+
+private: // data
+
+    /**
+     * Start position of gesture.
+     */
+    TPoint iStartPosition;
+
+    /**
+     * Current position of gesture.
+     */
+    TPoint iCurrentPosition;
+
+    /**
+     * Previous position of gesture.
+     */
+    TPoint iPreviousPosition;
+
+    /**
+     * ETrue if drag gesture already detected.
+     */
+    TBool iDragDetected;
+
+    /**
+     * Drag threshold area.
+     */
+    TThresholdArea iDragArea;
+    
+    /**
+     * Boolean flag to indicate if drag recognition
+     * should be started upon single touch drag.
+     * This flag may be set when multi touch changes to
+     * single (i.e. another pointer was released).
+     */
+    TBool iStartOnSingleTouchDrag;
+    
+    /**
+     * ETrue if continuous feedback ongoing.
+     */
+    TBool iContinuousFeedback;
+    };
+
+} // namespace AknTouchGestureFw
+
+#endif // C_AKNTOUCHGESTUREFWDRAGRECOGNIZER_H