/*

* Copyright (c) 2002 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:   CSvgtFbsRasterizer class.

*

*/			

#ifndef SVGTFBSRASTERIZER_H

#define SVGTFBSRASTERIZER_H

#include "SvgtRegisteredBitmap.h"

#include "svgtgraphicsinterface.h"

#include <e32base.h>

#include <VG/openvg.h>

const TUid KUidNvgProprietaryFormat = { 968435518 };

const TInt KMaxRecentBmpCacheSize = 0x40000;

class CRasterizerCacheItem;

class CRasterizedBitmapCache;

class MVGImageBinder;

class CSvgtRegisteredBitmap;

class CNvgEngine;

class TAknIconHeader;

TBool operator==(const CFbsRasterizer::TBitmapDesc& aBitmapDesc1, const CFbsRasterizer::TBitmapDesc& aBitmapDesc2);

/** Example implementation of a rasterizer that is used to generate pixel

data for extended bitmaps of example type KUidExtendedBitmapExample. 

 */

NONSHARABLE_CLASS (CSvgtFbsRasterizer) : public CFbsRasterizer

    {

public:

    IMPORT_C static CFbsRasterizer* New();

    ~CSvgtFbsRasterizer();

    // From CFbsRasterizer

    void BeginBitmap(TInt64 aBitmapId, const TBitmapDesc& aBitmapDesc, const TRegion* aRegionOfInterest);

    void EndBitmap(TInt64 aBitmapId);

    const TUint32* ScanLine(TInt64 aBitmapId, const TPoint& aPixel, TInt aLength);

    TInt GetInterface(TUid aInterfaceId, TAny*& aInterface);

private:

    CSvgtFbsRasterizer();

    CSvgtRegisteredBitmap* RegisteredBitmap(TInt64 aBitmapId);

    CSvgtRegisteredBitmap* RecentBitmap(TInt64 aBitmapId);

    void DoBeginBitmapL(TInt64 aBitmapId, const TBitmapDesc& aBitmapDesc,

                        const TRegion* aRegionOfInterest);

    CSvgtRegisteredBitmap* DoCreateAndRegisterBitmapL(TInt64 aBitmapId, const TBitmapDesc& aBitmapDesc, CFbsBitmap * aPixmap);    

    void InitializeRasterizer();

    CRasterizerCacheItem* FetchFromCache( TInt64 aBitmapId );

    /*

     * RenderL retrieves data from the Extended Bitmap and passes the data to nvgdecoder  

     */

    void RenderL( const TBitmapDesc& aBitmapDesc, CSvgtRegisteredBitmap& aBitmap  );

    /*

     * Rendering of Bitmap

     */

    void RenderBitmapL(CSvgtRegisteredBitmap& aPixMap, CFbsBitmap * aMask, const TBitmapDesc& aBitmapDesc, TPtr8& aDataPtr8, TAknIconHeader& aIconHeader);

    /* 

     * Rendering of mask

     */

    void RenderMaskL(CSvgtRegisteredBitmap& aPixMap, CFbsBitmap * aMask, const TBitmapDesc& aBitmapDesc, TPtr8& aDataPtr8, TAknIconHeader& aIconHeader);

    /**

     * UpdateMatrices() 

     * locally stores the current environment parameters like paint,path handles,position matrices etc., 

     * so as to revert back (after operations done by nvgdecoder) so that the original position of the icons are intact

     */

    void UpdateMatrices();

    /**RestoreMatrices() reverts back the position matrices,path and paint handles which are locally stored using UpdateCurrentMatrices 

    so that the original positions of the icons are intact

    */            

    void RestoreMatrices();

    /**

     * ApplyMarginL applies MarginCorrection to icons which donot comply to the S60 width-height/aspect ratio restrictions

    */   

    TSize ApplyMarginL(VGImage aVgImage, TSize aSize);

    /**

     * Map OpenVg Error codes to symbian error codes

     */

    TInt MapOpenVgErrorCodeToSymbian(TInt aErrorCode);

private: //Data members

    /** List of currently registered extended bitmaps, the key is the bitmap id.

     */

    TDblQue<CSvgtRegisteredBitmap> iRegisteredBmps;

    /** List of recently used extended bitmaps, the key is the bitmap id.

     */

    TDblQue<CSvgtRegisteredBitmap> iRecentBmps;

    /** Total size in bytes of the pre-rendered buffers for all the recently used extended bitmaps.

     */

    TInt iTotalRecentBmpSize;

    /** An idle-time active object to clean up the recently used extended bitmaps.

     */

    CSvgtGraphicsInterface * iGraphicsInterface;

    TBool iIsRasterizerValidState;

    TBool iMatricesUpdated;

    CNvgEngine* iNvgEngine;

    VGPaint iUserStrokePaint;

    VGPaint iUserFillPaint;

    VGint iMatrixMode;

    TReal32 iImageMatrix[9];

    TReal32 iPathMatrix[9];

    TReal32 iFillPaintMatrix[9];

    TReal32 iStrokePaintMatrix[9];

    TInt   iCacheLimit;

    TBool   iSpecialProcess;

    };

#endif // SVGTFBSRASTERIZER_H