/*
* 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 <graphics/fbsrasterizer.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
