/*

* Copyright (c) 2008 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:  NVG Decoder header file

 *

*/

#ifndef NVGFITTOVIEWBOX_H

#define NVGFITTOVIEWBOX_H

#include <e32std.h>

#include <e32base.h>

#include <VG/openvg.h>

#include <nvg.h>

class CNvgFitToViewBoxImpl:  public CBase

    {

private:

    CNvgFitToViewBoxImpl();

     /**

          * @Purpose: 2 Phase Constructor

          * @Version

          * @parameter: None

          * @return: None

     */

     void ConstructL();

     /**

          * @Purpose: Destructor

          * @Version

          * @parameter: None

          * @return: None

     */

    public:

    /**

         * @Purpose: 2 Phase Constructor

         * @Version

         * @parameter: None

         * @return: None

    */

    static CNvgFitToViewBoxImpl*    NewL();

    /**

         * @Purpose: 2 Phase Constructor

         * @Version

         * @parameter: None

         * @return: None

    */

    static CNvgFitToViewBoxImpl*    NewLC();

    /**

         * @Purpose: Constructor

         * @Version

         * @parameter: None

         * @return: None

    */

    virtual ~CNvgFitToViewBoxImpl();

     /**

         * @Purpose: Setter function for viewbox    

         * @Version:    

         * @parameter:  TRect which will be the viewbox for the content

         * @return: None

    */

    inline void SetViewBox(TReal avbX, TReal avbY,TReal avbW,TReal avbH);

    /**

         * @Purpose: Setter function for Aligning

         * @Version

         * @parameter: Indicates to fit the viewport in the viewbox

         * @return: None

    */

    inline void SetAlign(TNvgAlignStatusType aAlignStatus);

    /**

         * @Purpose: Setter function for MeetorSlice

         * @Version

         * @parameter: Indicates whether to streach or slice the content

         * @return: None

    */

    inline void SetScaling(TNvgMeetOrSliceType aMeetSlice);    

    /**

         * @Purpose: Setter function for Transformation matrix

         * @Version

         * @parameter: The first two rows of the transformation matrix

         * @return: None

    */

    inline void SetTransform(TReal aM00,TReal aM01,TReal aM02,TReal aM10,TReal aM11,TReal aM12);

    /**

         * @Purpose: Update the transformation matrix for Translating the 

                     Contnet

         * @Version

         * @parameter: Translation components by aX, aY 

                       coordinates

         * @return: None

    */

    inline void Translate(TReal aX, TReal aY);

    /**

         * @Purpose: Update the transformation matrix for 

                     Scaling the Contnet

         * @Version

         * @parameter: Scaling factors Sx, Sy

         * @return: None

    */

    inline void Scale(TReal aX, TReal aY);

   /**

         * @Purpose: Calculating the transfomation matrix to 

                     carry out the viewport to viewbox 

                     transformation

         * @Version

         * @parameter: The viewport which is to be transformed

                       If viewbox is not defined, set the size of the viewbox 

         * @return: None

    */

    void SetWindowViewportTrans( TRect aViewPort, TSize aSize );

    void Concatenate(TReal aMatrix[]);

    void Concatenate(TReal aM00, TReal aM01, TReal aM02, TReal aM10, TReal aM11, TReal aM12);

public:        

    // viewbox to viewport transformation matrix

    TReal iM00;

    TReal iM01;

    TReal iM02;

    TReal iM10;

    TReal iM11;

    TReal iM12;

    //The viewBox onto which the content will be drawn

    TReal   ivbX;

    TReal   ivbY;

    TReal   ivbW;

    TReal   ivbH;

    //Indicate that the content has a viewbox defined

    TBool iViewBoxDefined;

    //Define how to fit the content into the viewport

    TNvgAlignStatusType iAlign;

    //Weather to streach or clip the content to fit it into the viewbox       |

    TNvgMeetOrSliceType iMeetSlice;

    };

#include "nvgfittoviewbox.inl"

#endif

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