/*

* Copyright (c)  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:   ?Description

*

*/

#ifndef ALFEXCALENDARDECKCONTROL_H

#define ALFEXCALENDARDECKCONTROL_H

#include <alf/alfcontrol.h>

const TInt KMonthsVisible = 2; // DONT CHANGE

// Animation styles

enum TMonthAnimationStyle

{

    EAnimationStyle1 = 1,

    EAnimationStyle2,

    EAnimationStyle3,

    EAnimationStyleInvalid

};

// 

enum TMonthTransitionState

{

   ETransitionStateMovingToNext = 1,

   ETransitionStateMovingToPrev,

   ETransitionStateStopped

};

// Forward declarations

class CAlfGridLayout;

class CAlfDeckLayout;

class CAlfFlowLayout;

class CAlfCurvePath;

class CAlfCurvePathLayout;

class CAlfImageVisual;

class CAlfExCalendarMonth;

class CAlfExCalendarEngine;

// CAlfExCalendarDeckControl declaration

class CAlfExCalendarDeckControl : public CAlfControl

    {

public: // methods

    /**

     * 2 phase construction

     */

    static CAlfExCalendarDeckControl* NewLC( CAlfEnv& aEnv, CAlfExCalendarEngine& aCalendarEngine );

    /**

     * destructor

     */    

    ~CAlfExCalendarDeckControl();

    /**

     * Handles application events

     *

     * @param aEvent contains event data

     * @return true if event is handled successfully

     */    

    TBool OfferEventL( const TAlfEvent& aEvent );

    /**

     * Sets month view value

     *

     * @param aVal value to be set to iMonthView

     */

    void SetMonthView( TBool aVal );

    /**

     * returns CAlfExCalendarEngine object

     * @return CAlfExCalendarEngine object

     */    

    CAlfExCalendarEngine& CalendarEngine() const;

private: // Methods

    /**

     * constructor

     */

	CAlfExCalendarDeckControl( CAlfExCalendarEngine& aCalendarEngine, CAlfEnv& aEnv  );

    /**

     * 2nd phase constructor

     */

    void ConstructL( CAlfEnv& aEnv );

    /**

     * Creates texture from aImageFileName and set it to aImageVisual

     *

     * @param aImageVisual created texture is added to this visual

     * @param aImageFileName file from which texture is created

     */

    void SetImageTexture(

            CAlfImageVisual* aImageVisual,

            const TDesC& aImageFileName );

    /**

     * updates the does transition to next month according to animation style

     */

    void UpdateNextMonthL();

    /**

     * does transition to next month according to animation style

     */

    void UpdatePrevMonthL();

    /**

     * does transition to next month according to animation style

     */

    void MoveToNextMonthL();

    /**

     * does transition to previous month according to animation style

     */

    void MoveToPrevMonthL();

    /**

     * Implements transition to next month with animation style 1

     * Gets the month from right of display with rotation

     */

    void MoveToNextMonthAnimation1L();

    /**

     * Implements transition to next month with animation style 2

     * Gets the month from bottom of the display

     */

    void MoveToNextMonthAnimation2L();

    /**

     * Implements transition to previous month with animation style 1

     * Moves curently visible month to right of display with rotation

     * so that below month is visible (which is previous month)

     */

    void MoveToPrevMonthAnimation1L();

    /**

     * Implements transition to previous month with animation style 2

     * Moves curently visible month to bottom of display, so that

     * below month is visible (which is previous month)

     */

    void MoveToPrevMonthAnimation2L();

    /**

     * performs scaling transformation according to given scaling factors

     *

     * @param aVisual

     * @param aXSf

     * @param aYSf

     * @param aTime

     */

    void ScaleVisualL(

            CAlfVisual& aVisual,

            TReal aXSf,

            TReal aYSf,

            TInt aTime );

    /**

     * performs rotation transformation according to given timed values.

     *

     * @param aVisual

     * @param aInitAngle

     * @param aTargetAngle

     * @param aTime

     */

    void RotateVisualL(

            CAlfVisual& aVisual,

            TReal aInitAngle,

            TReal aTargetAngle,

            TInt aTime );

    /**

     * Sets opacity of given visual according to timed values.

     *

     * @param aVisual

     * @param aInitValue

     * @param aTargetValue

     * @param aTime

     */

    void SetOpacity(

            CAlfVisual& aVisual,

            TReal aInitValue,

            TReal aTargetValue,

            TInt aTime );

private: // Data

    // toolkit environment

    CAlfEnv& iEnv;

    // deck layout

	CAlfDeckLayout* iDeck;

    // index into iMonthControls

    TInt iCurrentMonthControlIndex;

    // currently focused month

	TInt iFocusedMonth;

    // display rectangle

	TRect iDisplayRect;

    // current time/month

	TTime iSelectedTime;

    // month control array

	CAlfExCalendarMonth* iMonthControls[KMonthsVisible];

    // month view status

    TBool iMonthView;

    // dummy calendar engine

    CAlfExCalendarEngine& iCalendarEngine;

    // animation style

    TMonthAnimationStyle iMonthAnimationStyle;

    // month transition state

    TMonthTransitionState iMonthTransitionState;

    // CAlfImageVisual* iBackground; // Currently not used

    };

#endif // ALFEXCALENDARDECKCONTROL_H