/*

 * ============================================================================

 *  Name        : hgteleportphysics.h

 *  Part of     : Hg Teleport

 *  Description : Application class

 *  Version     : %version:  %

 *

 *  Copyright © 2009 Nokia.  All rights reserved.

 *  This material, including documentation and any related computer

 *  programs, is protected by copyright controlled by Nokia.  All

 *  rights are reserved.  Copying, including reproducing, storing,

 *  adapting or translating, any or all of this material requires the

 *  prior written consent of Nokia.  This material also contains

 *  confidential information which may not be disclosed to others

 *  without the prior written consent of Nokia.

 * ============================================================================

 * 

 */

#ifndef HGTELEPORTPHYSICS_H

#define HGTELEPORTPHYSICS_H

#include <e32base.h>

#include <e32std.h>

class MAknPhysicsObserver;

/**

 * Simple physics for grid animation

 */

class CHgTeleportPhysics : public CActive

    {

public:

    /*

     * Destructor

     */

    ~CHgTeleportPhysics();

    /**

     * Two-phased constructor.

     */

    static CHgTeleportPhysics* NewL( MAknPhysicsObserver& aObserver );

    /**

     * Two-phased constructor.

     */

    static CHgTeleportPhysics* 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

     */

    CHgTeleportPhysics( 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 // HGTELEPORTPHYSICS_H