--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/uifw/AvKon/aknphysics/inc/aknphysicsdragobserver.h	Tue Feb 02 01:00:49 2010 +0200
@@ -0,0 +1,160 @@
+/*
+* 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:  AknPhysics drag event observer
+*
+*/
+
+
+#ifndef C_AKNPHYSICSDRAGOBSERVER_H
+#define C_AKNPHYSICSDRAGOBSERVER_H
+
+
+#include <e32base.h>
+
+class TPointerEvent;
+class CAknPhysicsParameterProvider;
+class CAknPhysicsFlickTracker;
+
+/**
+ *  AknPhysics drag event observer
+ *
+ */
+NONSHARABLE_CLASS( CAknPhysicsDragObserver ) : public CBase
+    {
+
+public:
+
+    /**
+     * Two-phased constructor.
+     */
+    static CAknPhysicsDragObserver* NewL( 
+        CAknPhysicsParameterProvider* aProvider );
+
+    /**
+     * Two-phased constructor.
+     */
+    static CAknPhysicsDragObserver* NewLC(
+        CAknPhysicsParameterProvider* aProvider );
+
+    /**
+     * Destructor.
+     */
+    virtual ~CAknPhysicsDragObserver();
+
+    /**
+     * Registers pointer event position.
+     *
+     * @param aEvent pointer event
+     */
+    void RegisterEventPosition( const TPointerEvent* aEvent );
+
+    /**
+     * Returns changed drag distance point.
+     *
+     * @return Changed drag distance.
+     */
+    TPoint ChangedDragDistance() const;
+
+    /**
+     * Returns changed vertical drag move time.
+     *
+     * @return Changed drag move time.
+     */
+    TInt ChangedVerticalDragMoveTime() const;
+
+    /**
+     * Returns changed horizontal drag move time.
+     *
+     * @return Changed drag move time.
+     */
+    TInt ChangedHorizontalDragMoveTime() const;
+
+    /**
+     * Returns ETrue if drag parameters has been changed during drag event.
+     *
+     * @return ETrue if drag parameters has been changed.
+     */
+    TBool DragChanged() const;
+
+private:
+
+    /**
+     * C++ constructor.
+     */
+    CAknPhysicsDragObserver();
+
+    /**
+     * Symbian second-phase constructor.
+     */
+    void ConstructL( CAknPhysicsParameterProvider* aProvider );
+
+    /**
+     * Handles pointer down event.
+     *
+     * @param aPosition Down event position.
+     */
+    void HandlePointerDownEvent( const TPoint& aPosition );
+
+    /**
+     * Handles pointer drag event.
+     *
+     * @param aPosition Drag event position.
+     */
+    void HandlePointerDragEvent( const TPoint& aPosition );
+
+    /**
+     * Handles pointer up event.
+     *
+     * @param aPosition Up event position.
+     */
+    void HandlePointerUpEvent( const TPoint& aPosition );
+
+    /**
+     * Resets state.
+     */
+    void Reset();
+
+private: // data
+ 
+    /**
+     * Dragging event down position.
+     */
+    TPoint iDownPosition;
+
+    /**
+     * Dragging event up position.
+     */
+    TPoint iUpPosition;
+
+    /**
+     * Vertical flick tracker.
+     * Own.
+     */
+    CAknPhysicsFlickTracker* iVerticalTracker;
+
+    /**
+     * Horizontal flick tracker.
+     * Own.
+     */
+    CAknPhysicsFlickTracker* iHorizontalTracker;
+
+    /**
+     * Boolean flag to indicate whether pointer is considered to be down.
+     */
+    TBool iPointerDown;
+    };
+
+
+#endif // C_AKNPHYSICSDRAGOBSERVER_H
+