diff -r fb3763350a08 -r 4d54b72983ae taskswitcher/taskswitcherui/taskswitcherapp/inc/tsphysics.h
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/taskswitcher/taskswitcherui/taskswitcherapp/inc/tsphysics.h	Tue Jan 26 11:48:23 2010 +0200
@@ -0,0 +1,140 @@
+/*
+* 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:  Application class
+ *
+*/
+
+
+#ifndef TSPHYSICS_H
+#define TSPHYSICS_H
+
+#include <e32base.h>
+#include <e32std.h>
+
+class MAknPhysicsObserver;
+
+/**
+ * Simple physics for grid animation
+ */
+class CTsPhysics : public CActive
+    {
+public:
+    /*
+     * Destructor
+     */
+    ~CTsPhysics();
+
+    /**
+     * Two-phased constructor.
+     */
+    static CTsPhysics* NewL( MAknPhysicsObserver& aObserver );
+
+    /**
+     * Two-phased constructor.
+     */
+    static CTsPhysics* NewLC( MAknPhysicsObserver& aObserver );
+
+public: // New functions
+    
+    /**
+     * Starts animation
+     * 
+     * @param  aDrag       next drag point
+     * @param  aStartTime  when animation should be started
+     */
+    void StartPhysics( const TPoint& aTarget );
+
+    /**
+     * Stops animation
+     */
+    void StopPhysics();
+    
+private:
+    
+    /**
+     * C++ constructor
+     */
+    CTsPhysics( MAknPhysicsObserver& aObserver );
+
+    /**
+     * Second-phase constructor
+     */
+    void ConstructL();
+
+private: // From CActive
+    
+    /**
+     * Handles completion
+     */
+    void RunL();
+
+    /**
+     * Called when cancelled
+     */
+    void DoCancel();
+
+    /**
+     * Hanldes error
+     */
+    TInt RunError( TInt aError );
+    
+private: // New functions
+    
+    /**
+     * Calculates animation steps
+     */
+    TInt CalculateAnimationSteps( const TPoint& aTarget );
+
+private:
+
+    enum TPhysicsStatus
+        {
+        EStopped,
+        ERunning,
+        EFinished
+        };
+    
+    /**
+     * Observer
+     */
+    MAknPhysicsObserver& iObserver;
+    
+    /**
+     * Animation timer
+     */
+    RTimer iTimer;
+    
+    /**
+     * Animation state
+     */
+    TPhysicsStatus iPhysicsState;
+    
+    /**
+     * Controls animation refresh rate
+     */
+    TTimeIntervalMicroSeconds32 iAnimationTickTime;
+    
+    /**
+     * Animation ticks counter
+     */
+    TInt iAnimationTicks;
+    
+    /**
+     * Offset of how much view should be moved
+     */
+    RArray<TPoint> iAnimationSteps;
+
+    };
+
+#endif // TSPHYSICS_H