// Copyright (c) 1997-2009 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:

//

#ifndef __BITSTD_H__

#define __BITSTD_H__

#include <e32std.h>

#include <gdi.h>

#include <fbs.h>

#include <bitbase.h>

#ifndef SYMBIAN_ENABLE_SPLIT_HEADERS

#include <bitgdi/bitgcextradata.h>

#endif

// For use when testing the code, allows the fast blending to be disabled so back to back comparisons

// can done be to check either timing or exact output.

//#define __ALLOW_FAST_BLEND_DISABLE__

/**

 @publishedAll

 @released 

*/

class CFbsBitGcFont : public CFbsFont

	{

public:

	IMPORT_C CFbsBitGcFont();

	IMPORT_C virtual ~CFbsBitGcFont();

	IMPORT_C CBitmapFont* Address() const;

	IMPORT_C TInt Duplicate(TInt aHandle);

	IMPORT_C void Reset();

	IMPORT_C void operator=(const CFbsBitGcFont& aFont);

protected:

	TBool iCopy;

	};

/**

A bitmap managed by the font and bitmap server.

@publishedAll

@released 

*/

class CFbsBitGcBitmap : public CFbsBitmap

	{

public:

	IMPORT_C CBitwiseBitmap* Address() const;

	IMPORT_C void LockHeap() const;

	IMPORT_C void UnlockHeap() const;

	};

/**

 @publishedAll

 @released 

*/

class TEllipse

	{

public:

	/**	

	Enumeration for the ellipse production life cycle

	*/

	enum TEllipseStatus

		{

		/**

		Ellipse has been initialised but has no area

		*/

		EInitialised,

		/**

		The ellipse is drawn as two parabolas. These are in two sectors, the top and bottom

		half of the rectangle. The first sector means the top parabola has been produced.

		*/

		EFirstSector,

		/**

		The parabola that occupies the bottom half of the rectangle has been produced. 

		*/

		ESecondSector,

		/**

		The ellipse is complete

		*/

		EComplete,

		/**

		The ellipse has either a height or width of two units or less

		and so takes the appearance of a line

		*/

		ELine

		};

public:

	IMPORT_C void Construct(const TRect& aRect);

	IMPORT_C TBool SingleStep(TPoint& aTopLeft,TPoint& aTopRight,TPoint& aBottomLeft,TPoint& aBottomRight);

	IMPORT_C TBool NextStep(TPoint& aTopLeft,TPoint& aTopRight,TPoint& aBottomLeft,TPoint& aBottomRight);

	IMPORT_C TPoint Intersection(const TRect& aRect,const TPoint& aPoint);

protected:

	IMPORT_C TBool Output(TPoint& aTopLeft,TPoint& aTopRight,TPoint& aBottomLeft,TPoint& aBottomRight);

protected:

	TEllipseStatus iStatus;

	TInt iA;

	TInt iB;

	TInt64 iASquared;

	TInt64 iBSquared;

	TInt64 iASquBSqu;

	TInt iX;

	TInt iY;

	TInt iXAdj;

	TInt iYAdj;

	TPoint iOffset;

	TInt64 iD1;

	TInt64 iD2;

	};

/**

 @publishedAll

 @released 

*/

class CPolygonFiller : public CBase

	{

public:

	/**

	Describes how pixels are to be displayed in the polygon. aUsage should be select to

	one of these values before CPolygonFiller::Construct is used.

	*/

	enum TUsage

		{

		/**

		A request for all pixel runs in sequential order

		*/

		EGetAllPixelRunsSequentially,

		/**

		A request for all pixel runs in sequential order but only for specified lines.

		*/

		EGetPixelRunsSequentiallyForSpecifiedScanLines

		};

public:

	IMPORT_C CPolygonFiller();

	IMPORT_C ~CPolygonFiller();

	IMPORT_C void Construct(const CArrayFix<TPoint>* aPointArray,CGraphicsContext::TFillRule aFillRule,TUsage aUsage=EGetAllPixelRunsSequentially); // N.B. this cannot fail

	IMPORT_C void Construct(const TPoint* aPointList,TInt aNumPoints, CGraphicsContext::TFillRule aFillRule, TUsage aUsage=EGetAllPixelRunsSequentially); // N.B. this cannot fail

	IMPORT_C void Reset();

	IMPORT_C void GetNextPixelRun(TBool& aExists, TInt& aScanLine, TInt& aStart, TInt& aEnd);

	IMPORT_C void GetNextPixelRunOnSpecifiedScanLine(TBool& aExists, TInt aScanLine, TInt& aStart, TInt& aEnd);

private: // data-types for the fast algorithm

	struct SFastEdge

		{

		TInt upperVertex;

		TInt lowerVertex;

		TInt firstVertex;

		};

	struct SFastScanLineIntersection;

	struct SFastActiveEdge

		{

		SFastEdge* edgePtr;

		TLinearDDA lineGenerator;

		SFastScanLineIntersection* scanLineIntersectionPtr;

		};

	struct SFastScanLineIntersection

		{

		TInt firstPixel;

		TInt lastPixel;

		SFastActiveEdge* activeEdgePtr;

		};

private: // data-types for the slow algorithm

	struct SSlowScanLineIntersection

		{

		TInt firstPixel;

		TInt lastPixel;

		TInt firstVertexOfEdge;

		};

private: // data-types for both algorithms

	struct SFastData

		{

		TPoint* vertexList;

		SFastEdge* edgeList;

		SFastActiveEdge* activeEdgeList;

		SFastScanLineIntersection* scanLineIntersectionList;

		TInt numActiveEdges;

		TInt numScanLineIntersections;

		TInt nextEdgeToActivate;

		};

	struct SSlowData

		{

		enum {EStoreSize=8};

		TLinearDDA lineGenerator;

		SSlowScanLineIntersection scanLineIntersectionList[EStoreSize];

		TInt numIntersectionsWithSameFirstPixelPreviouslyMet;

		TInt numIntersectionsWithSameFirstPixelMetThisTime;

		TInt numScanLineIntersections;

		TBool scanLineComplete;

		TInt firstPixelOfLastIntersectionInPrevBuffer;

		};

private:

	void Construct(CGraphicsContext::TFillRule aFillRule,TUsage aUsage);

	void FastHandleVertexIntersection(TInt& aCurrentActiveEdge, TBool aIsLowerVertex);

	void SetFastIntersection(SFastActiveEdge& aActiveEdge, SFastScanLineIntersection& aScanLineIntersection);

	void SlowHandleVertexIntersection(SSlowScanLineIntersection& aScanLineIntersection, TInt& aVertexStartingCurrentEdge,TBool aIsLowerVertex);

	void JumpToCurrentScanLine(TLinearDDA& aLineGenerator, const TPoint& aUpper, const TPoint& aLower,TPoint& aStartPos, TPoint& aEndPos) const;

	const TPoint& Point(TInt aIndex);

private:

	const CArrayFix<TPoint>* iPointArray; // not owned by the class

	const TPoint* iPointList; // not owned by the class

	CGraphicsContext::TFillRule iFillRule;

	TBool iUseFastAlgorithm;

	TInt iNumVertexes;

	TBool iToggler; // used by EAlternate fill-rule

	TInt iNestingLevel; // used by EWinding fill-rule

	TInt iScanLineIntersection;

	TInt iRightMostPixelOnScanLine;

	TInt iFirstVertex;

	TBool iPolygonIsAllHorizontal;

	TInt iFirstScanLine;

	TInt iLastScanLine;

	TInt iCurrentScanLine;

	SFastData iFastData;

	SSlowData iSlowData;

private:

	friend class TCompareEdgesUpperY;

	friend class TCompareActiveEdgesFirstVertex;

	friend class TCompareScanLineIntersectionsFirstPixel;

	friend class TSwapEdges;

	friend class TSwapActiveEdges;

	friend class TSwapScanLineIntersections;

	};

class CFbsDevice;

class CFbsDrawDevice;

class TOpenFontCharMetrics;

class CGraphicsAccelerator;

class CWsBitmap;

class MFastBlend;

class CFbsRasterizer;

class CFbsBitGcExtraData;

/** 

Concrete implementation of a bitmapped graphics context.

The class provides new functionality, and implementations of the pure virtual 

functions defined in CGraphicsContext and CBitmapContext. 

@publishedAll

@released

*/

class CFbsBitGc : public CBitmapContext

	{

public:

/** Defines possible rotation values. */

	enum TGraphicsOrientation

		{

	/** Normal orientation is supported. */

		EGraphicsOrientationNormal,

	/** A 90 degree rotation is supported. */

		EGraphicsOrientationRotated90,

	/** A 180 degree rotation is supported. */

		EGraphicsOrientationRotated180,

	/** A 270 degree rotation is supported. */

		EGraphicsOrientationRotated270

		};

public:

	IMPORT_C static CFbsBitGc* NewL();

	IMPORT_C virtual ~CFbsBitGc();

	IMPORT_C void Activate(CFbsDevice* aDevice);

	IMPORT_C void ActivateNoJustAutoUpdate(CFbsDevice* aDevice);

	IMPORT_C void BitBlt(const TPoint& aPoint,const CFbsBitGc& aGc);

	IMPORT_C void BitBlt(const TPoint& aPoint,const CFbsBitGc& aGc,const TRect& aSourceRect);

	IMPORT_C void BitBlt(const TPoint& aPoint,const CFbsBitmap* aBitmap);

	IMPORT_C void BitBlt(const TPoint& aPoint,const CFbsBitmap* aBitmap,const TRect& aSourceRect);

	IMPORT_C void BitBltMasked(const TPoint& aPoint,const CFbsBitmap* aBitmap,const TRect& aSourceRect,const CFbsBitmap* aMaskBitmap,TBool aInvertMask);

	IMPORT_C void CancelClipping();

	IMPORT_C void CancelClippingRect();

	IMPORT_C void CancelClippingRegion();

	IMPORT_C void Clear();

	IMPORT_C void Clear(const TRect& aRect);

	IMPORT_C void CopyRect(const TPoint& aOffset,const TRect& aRect);

	IMPORT_C void CopySettings(const CFbsBitGc& aGc);

	IMPORT_C CGraphicsDevice* Device() const;

	IMPORT_C void DiscardBrushPattern();

	IMPORT_C void DiscardFont();

	IMPORT_C void DrawArc(const TRect& aRect,const TPoint& aStart,const TPoint& aEnd);

	IMPORT_C void DrawPie(const TRect& aRect,const TPoint& aStart,const TPoint& aEnd);

	IMPORT_C void DrawBitmap(const TPoint& aTopLeft,const CFbsBitmap* aSource);

	IMPORT_C void DrawBitmap(const TRect& aDestRect,const CFbsBitmap* aSource);

	IMPORT_C void DrawBitmap(const TRect& aDestRect,const CFbsBitmap* aSource,const TRect& aSourceRect);

	IMPORT_C void DrawBitmapMasked(const TRect& aDestRect,const CFbsBitmap* aBitmap,const TRect& aSourceRect,const CFbsBitmap* aMaskBitmap,TBool aInvertMask);

	IMPORT_C void DrawBitmapMasked(const TRect& aDestRect,const CWsBitmap* aBitmap,const TRect& aSourceRect,const CWsBitmap* aMaskBitmap,TBool aInvertMask);

	IMPORT_C void DrawRoundRect(const TRect& aRect,const TSize& aEllipse);

	IMPORT_C void DrawPolyLine(const CArrayFix<TPoint>* aPointList);

	IMPORT_C void DrawPolyLineNoEndPoint(const CArrayFix<TPoint>* aPointList);

	IMPORT_C void DrawPolyLine(const TPoint* aPointList,TInt aNumPoints);

	IMPORT_C void DrawPolyLineNoEndPoint(const TPoint* aPointList,TInt aNumPoints);

	IMPORT_C TInt DrawPolygon(const CArrayFix<TPoint>* aPointList,CGraphicsContext::TFillRule aFillRule=CGraphicsContext::EAlternate);

	IMPORT_C TInt DrawPolygon(const TPoint* aPointList,TInt aNumPoints,CGraphicsContext::TFillRule aFillRule=CGraphicsContext::EAlternate);

	IMPORT_C void DrawEllipse(const TRect& aRect);

	IMPORT_C void DrawLine(const TPoint& aStart,const TPoint& aEnd);

	IMPORT_C void DrawLineTo(const TPoint& aPoint);

	IMPORT_C void DrawLineBy(const TPoint& aVector);

	IMPORT_C void DrawRect(const TRect& aRect);

	IMPORT_C void DrawText(const TDesC& aText);

	IMPORT_C void DrawText(const TDesC& aText,const TPoint& aPosition);

	IMPORT_C void DrawText(const TDesC& aText,const TRect& aBox);

	IMPORT_C void DrawText(const TDesC& aText,const TRect& aBox,TInt aBaselineOffset,TTextAlign aHrz=ELeft,TInt aMargin=0);

	IMPORT_C void DrawText(const TDesC& aText,const TRect& aBox,TInt aBaselineOffset,TInt aTextWidth,TTextAlign aHrz=ELeft,TInt aMargin=0);

	IMPORT_C void DrawTextVertical(const TDesC& aText,TBool aUp);

	IMPORT_C void DrawTextVertical(const TDesC& aText,const TPoint& aPosition,TBool aUp);

	IMPORT_C void DrawTextVertical(const TDesC& aText,const TRect& aBox,TBool aUp);

	IMPORT_C void DrawTextVertical(const TDesC& aText,const TRect& aBox,TInt aBaselineOffset,TBool aUp,TTextAlign aVert=ELeft,TInt aMargin=0);

	IMPORT_C void DrawTextVertical(const TDesC& aText,const TRect& aBox,TInt aBaselineOffset,TInt aTextWidth,TBool aUp,TTextAlign aVert=ELeft,TInt aMargin=0);

	IMPORT_C void MapColors(const TRect& aRect,const TRgb* aColors,TInt aNumPairs=2,TBool aMapForwards=ETrue);

	IMPORT_C void MoveTo(const TPoint& aPoint);

	IMPORT_C void MoveBy(const TPoint& aVector);

	IMPORT_C void OrientationsAvailable(TBool aOrientation[4]);

	IMPORT_C void Plot(const TPoint& aPoint);

	IMPORT_C void RectDrawnTo(TRect& aRect);

	IMPORT_C void Reset();

	IMPORT_C void Resized();

	IMPORT_C void SetBrushColor(const TRgb& aColor);

	IMPORT_C void SetBrushOrigin(const TPoint& aOrigin);

	IMPORT_C void SetBrushStyle(TBrushStyle aBrushStyle);

	IMPORT_C void SetClippingRegion(const TRegion* aRegion);

	IMPORT_C void SetClippingRect(const TRect& aRect);

	IMPORT_C void SetDitherOrigin(const TPoint& aPoint);

	IMPORT_C void SetDrawMode(TDrawMode);

	IMPORT_C void SetOrigin(const TPoint& aPoint=TPoint(0,0));

	IMPORT_C void SetPenColor(const TRgb& aColor);

	IMPORT_C void SetPenStyle(TPenStyle);

	IMPORT_C void SetPenSize(const TSize& aSize);

	IMPORT_C void SetCharJustification(TInt aExcessWidth,TInt aNumGaps);

	IMPORT_C void SetWordJustification(TInt aExcessWidth,TInt aNumChars);

	IMPORT_C void SetUnderlineStyle(TFontUnderline aUnderlineStyle);

	IMPORT_C void SetUserDisplayMode(TDisplayMode aDisplayMode);

	IMPORT_C void SetStrikethroughStyle(TFontStrikethrough aStrikethroughStyle);

	IMPORT_C void SetShadowMode(TBool aShadowMode = EFalse);

	inline void SetFadeMode(TBool aFadeMode = EFalse);			//Deprecated

	inline void SetFadingParameters(TUint8 aBlackMap = 0);		//Deprecated

	IMPORT_C void SetFaded(TBool aFaded);		//Virtual from CBitmapContext

	IMPORT_C void SetFadingParameters(TUint8 aBlackMap,TUint8 aWhiteMap);	//Virtual from CBitmapContext

	IMPORT_C TBool SetOrientation(TGraphicsOrientation aOrientation);

	IMPORT_C void ShadowArea(const TRegion* aRegion);

	IMPORT_C void FadeArea(const TRegion* aRegion);

	IMPORT_C void UpdateJustification(const TDesC& aText);

	IMPORT_C void UpdateJustificationVertical(const TDesC& aText,TBool aUp);

	IMPORT_C void UseBrushPattern(const CFbsBitmap* aBitmap);

	IMPORT_C TInt UseBrushPattern(TInt aFbsBitmapHandle);

	IMPORT_C void UseFont(const CFont* aFont);

	IMPORT_C TInt UseFont(TInt aFontHandle);

	IMPORT_C void UseFontNoDuplicate(const CFbsBitGcFont* aFont);

	IMPORT_C TBool IsBrushPatternUsed() const;

	IMPORT_C TBool IsFontUsed() const;

	inline static TInt16 Load16(const TUint8* aPtr) { return TInt16(aPtr[0]+(aPtr[1]<<8)); }

	IMPORT_C TInt AlphaBlendBitmaps(const TPoint& aDestPt,

									const CFbsBitmap* aSrcBmp1,

									const CFbsBitmap* aSrcBmp2,

									const TRect& aSrcRect1,

									const TPoint& aSrcPt2,

									const CFbsBitmap* aAlphaBmp,

									const TPoint& aAlphaPt);

	IMPORT_C TInt AlphaBlendBitmaps(const TPoint& aDestPt,

									const CFbsBitmap* aSrcBmp,

									const TRect& aSrcRect,

									const CFbsBitmap* aAlphaBmp,

									const TPoint& aAlphaPt);

	IMPORT_C void ExternalizeL(RWriteStream& aWriteStream);

	IMPORT_C void InternalizeL(RReadStream& aReadStream);

	IMPORT_C TInt SetClippingRegion(const TRegion& aRegion);

	IMPORT_C TInt AlphaBlendBitmaps(const TPoint& aDestPt,

											const CWsBitmap* aSrcBmp,

											const TRect& aSrcRect,

											const CWsBitmap* aAlphaBmp,

											const TPoint& aAlphaPt);

	IMPORT_C TRgb BrushColor();

	IMPORT_C TRgb PenColor();	

	IMPORT_C void ChangeDevice(CFbsDevice* aDevice);

	// New DrawText API's that take in extra paramemters such as context. Extensible.

	IMPORT_C void DrawText(const TDesC& aText,const TTextParameters* aParam);

	IMPORT_C void DrawText(const TDesC& aText,const TTextParameters* aParam,const TPoint& aPosition);

	IMPORT_C void DrawText(const TDesC& aText,const TTextParameters* aParam,const TRect& aBox);

	IMPORT_C void DrawText(const TDesC& aText,const TTextParameters* aParam,const TRect& aBox,TInt aBaselineOffset,TTextAlign aHrz=ELeft,TInt aMargin=0);

	IMPORT_C void DrawText(const TDesC& aText,const TTextParameters* aParam,const TRect& aBox,TInt aBaselineOffset,TInt aTextWidth,TTextAlign aHrz=ELeft,TInt aMargin=0);

	IMPORT_C void DrawTextVertical(const TDesC& aText,const TTextParameters* aParam,TBool aUp);

	IMPORT_C void DrawTextVertical(const TDesC& aText,const TTextParameters* aParam,const TPoint& aPosition,TBool aUp);

	IMPORT_C void DrawTextVertical(const TDesC& aText,const TTextParameters* aParam,const TRect& aBox,TBool aUp);

	IMPORT_C void DrawTextVertical(const TDesC& aText,const TTextParameters* aParam,const TRect& aBox,TInt aBaselineOffset,TBool aUp,TTextAlign aVert=ELeft,TInt aMargin=0);

	IMPORT_C void DrawTextVertical(const TDesC& aText,const TTextParameters* aParam,const TRect& aBox,TInt aBaselineOffset,TInt aTextWidth,TBool aUp,TTextAlign aVert=ELeft,TInt aMargin=0);

	IMPORT_C void UpdateJustification(const TDesC& aText,const TTextParameters* aParam);

	IMPORT_C void UpdateJustificationVertical(const TDesC& aText,const TTextParameters* aParam,TBool aUp);

private:

	CFbsBitGc();

	void AddRect(const TRect& aRect);

	TBool AnalyseEllipse(const TRect& rc, TPoint& srad, TPoint& erad, TInt& startq, TInt& endq, TBool* quads);

	void BitMultiply(TUint32* aBinaryDataPtr,TInt aBitLength,TInt aMultiplier);

	void CheckDevice() const;

	TBool CheckDevice(const TRect& aRect) const;

	TUint32* ClipBinaryArray(TUint32* aArray,TUint32* aArrayLimit,TInt aArrayWordWd,TInt& aDataWd,TInt& aDataHt,TPoint& aPos);

	void ClipFillLine(TPoint,TPoint);

	void CopyCharWord(TUint32* aBinaryDataPtr,const TUint8* aData,TInt aBitShift);

	void CopyCharLine(TUint32* aBinaryDataPtr,TInt aBufferWords,const TUint8* aData,TInt aBitShift,TInt aCharWidth);

	void DrawText(const TDesC& aText,const TTextParameters* aParam,const TPoint& aPosition,TTextAlign aAlignment,

				  CFont::TTextDirection aDirection,const TRect* aBox = NULL);

	void DoBitBlt(const TPoint& aDest,CFbsDevice* aDevice,const TRect& aSourceRect);

	void DoBitBlt(const TPoint& aDest,CBitwiseBitmap* aBitmap,TUint32* aBase,TInt aStride,const TRect& aSourceRect);

	void DoBitBltMasked(const TPoint& aDest,CBitwiseBitmap* aSourceBitmap,TUint32* aSourceBase,const TRect& aSourceRect,CBitwiseBitmap* aMaskBitmap,TUint32* aMaskBase,TBool aInvertMask,const TPoint& aDitherOrigin,TInt aShadowMode);

	void DoBitBltMaskedFlicker(const TPoint& aDest,CBitwiseBitmap* aSourceBitmap,TUint32* aSourceBase,const TRect& aSourceRect,CBitwiseBitmap* aMaskBitmap,TUint32* aMaskBase,TBool aInvertMask,const TPoint& aDitherOrigin,TInt aShadowMode);

	void DoBitBltMaskedNonFlicker(const TPoint& aDest,CBitwiseBitmap* aSourceBitmap,TUint32* aSourceBase,const TRect& aSourceRect,CBitwiseBitmap* aMaskBitmap,TUint32* aMaskBase,TBool aInvertMask,const TPoint& aDitherOrigin,TInt aShadowMode);

	void DoBitBltMaskedNonFlickerSolid(const TPoint& aDest,CBitwiseBitmap* aSourceBitmap,TUint32* aSourceBase,const TRect& aSourceRect,CBitwiseBitmap* aMaskBitmap,TUint32* aMaskBase,TBool aInvertMask,const TPoint& aDitherOrigin,TInt aShadowMode);

	void DoBitBltMaskedNonFlickerPatterned(const TPoint& aDest,CBitwiseBitmap* aSourceBitmap,TUint32* aSourceBase,const TRect& aSourceRect,CBitwiseBitmap* aMaskBitmap,TUint32* aMaskBase,TBool aInvertMask,const TPoint& aDitherOrigin,TInt aShadowMode);

	void DoBitBltAlpha(const TPoint& aDest, CBitwiseBitmap* aSourceBitmap,

					   TUint32* aSourceBase, const TRect& aSourceRect,

					   CBitwiseBitmap* aMaskBitmap, TUint32* aMaskBase,

					   const TPoint& aAlphaPoint, TInt aShadowMode, TBool aInvertMask);

	void DoBitBltAlpha(const TPoint& aDestPt,

					   const CBitwiseBitmap* aSrcBmp1,

					   TUint32* aSrcBmpDataAddr1,

					   const CBitwiseBitmap* aSrcBmp2,

					   TUint32* aSrcBmpDataAddr2,

					   const CBitwiseBitmap* aAlphaBmp,

					   TUint32* aAlphaBmpDataAddr,

					   const TRect& aSrcRect1,

					   const TPoint& aSrcPt2,

					   const TPoint& aAlphaPt,

					   TInt aShadowMode);

	void DoCopyRect(const TPoint&,const TRect&);

	void DoDrawBitmap(const TRect&,CBitwiseBitmap*,TUint32* aBase,TInt aStride,const TRect&,const TPoint& aDitherOrigin);

	void DoDrawBitmapMasked(const TRect& aDestRect,CBitwiseBitmap* aSourceBitmap,TUint32* aSourceBase,const TRect& aSourceRect,CBitwiseBitmap* aMaskBitmap,TUint32* aMaskBase,TBool aInvertMask,const TPoint& aDitherOrigin);

	void DoDrawLine(TPoint aStart,TPoint aEnd,TBool aDrawStartPoint);

	void DoDrawDottedWideLine(const TPoint& pt1,const TPoint& pt2,TBool drawstart,const TRect& screenrect);

	void DoDrawSolidWideLine(const TPoint& pt1,const TPoint& pt2,TBool drawstart,const TRect& screenrect);

	void DoDrawText(CFont::TPositionParam& aParam,const TInt aEnd);

	void DoDrawCharacter(const TPoint& aTopLeft,const TSize& aDataSize,const TUint8* aData);

	void DoDrawTextEx(CFont::TPositionParam& aParam,const CBitmapFont* font,const TInt aEnd, const TInt aUnderlineStrikethroughOffset);

	void DoDrawCharacterEx(const TPoint& aTopLeft,const TSize& aDataSize,const TUint8* aData,

		TBool aBold,TBool aItalic,TInt aSemiAscent);

	void DoDrawCharacterAntiAliased(const TPoint& aTopLeft,const TSize& aDataSize,const TUint8* aData, const TGlyphBitmapType aGlyphType);

	void DoDrawTextLarge(CFont::TPositionParam& aParam,const CBitmapFont* font,const TInt aEnd);

	void DoDrawCharacterLarge(const TPoint& aTopLeft,const TSize& aDataSize,const TUint8* aData,

		TBool aBold,TBool aItalic,TInt aSemiAscent,TInt aWidthFactor,TInt aHeightFactor);

	void DoDrawCharacterExLarge(const TPoint& aTopLeft,const TSize& aDataSize,const TUint8* aData,

		TBool aBold,TBool aItalic,TInt aSemiAscent,TInt aWidthFactor,TInt aHeightFactor);

	void DoDrawCharacterMultiplied(const TPoint& aTopLeft,const TSize& aDataSize,const TUint8* aData,

		TBool aBold,TBool aItalic,TInt aSemiAscent,TInt aWidthMultiplier,TInt aHeightMultiplier);

	void DoDrawTextVertical(CFont::TPositionParam& aParam,const CBitmapFont* font,TBool aUp,const TInt aEnd);

	void DoDrawCharacterVertical(const TPoint& aTopLeft,const TSize& aDataSize,const TUint8* aData,

		TBool aBold,TBool aItalic,TInt aSemiAscent,TInt aWidthFactor,TInt aHeightFactor,TBool aUp);

	void DoDrawCharacterVerticalAntiAliased(const TPoint& aTopLeft,const TSize& aDataSize,const TUint8* aData,TBool aUp, TGlyphBitmapType aGlyphBitmapType);

	void DoPlot(const TPoint& pt);

	void EllipseFill(const TRect& aRect);

	void EllipseOutline(const TRect& aRect);

	void EllipseOutlineWide(const TRect& aRect);

	void GetStrikethroughMetrics(TInt& aTop,TInt& aBottom);

	void OutputCharLine(TPoint aPrintPos,TUint32* aBuffer,TInt aDataLength,TInt aNum,TBool aBold,TInt aWidthFactor,TInt aHeightFactor);

	void OutputCharLineMultiplied(TPoint aPrintPos,TUint32* aBuffer,TInt aDataLength,TInt aNum,TBool aBold,TInt aWidthMultiplier,TInt aHeightMultiplier);

	void OutputCharLineVertical(TPoint aPrintPos,TUint32* aBuffer,TInt aDataLength,TInt aNum,TBool aBold,TInt aWidthFactor,TInt aHeightFactor,TBool aUp);

	void PenAllocate();

	void PenDrawClipped(TPoint aPoint);

	void PenDrawDeferred(TPoint aPoint,TInt* aArray,TInt aFirstElement);

	void PieArcOutline(const TRect& aRect,const TPoint& aStartRadius,const TPoint& aEndRadius,TBool aDoPie);

	void PieFill(const TRect& ellrect, const TPoint& aStartIntersect, const TPoint& aEndIntersect,

		TInt aStartQuadrant, TInt aEndQuadrant, const TBool* aQuadrants);

	void PieShell(const TRect& ellrect, const TPoint& startradius, const TPoint& endradius,

		const TBool* quads, TInt startquad, TInt endquad);

	void PieTriangles(TBool aInside,const TPoint& aStart,const TPoint& aEnd);

	void PieSliver(const TRect& ellrect,const TPoint& startradius,const TPoint& endradius,TInt quad);

	void PolyFill(const CArrayFix<TPoint>* aPointList,TFillRule aFillRule);

	void PolyFillLarge(const CArrayFix<TPoint>* aPointList,TFillRule aFillRule);

	void PolyFill(const TPoint* aPointList,TInt aNumPoints,TFillRule aFillRule);

	void PolyFillLarge(const TPoint* aPointList,TInt aNumPoints,TFillRule aFillRule);

	void PolyOutline(const CArrayFix<TPoint>* aPointList);

	void PolyOutline(const TPoint* aPointList,TInt aNumPoints);

	void RectFill(const TRect& aRect);

	void RoundRectFill(const TRect& aRect,TSize aSize);

	void RoundRectOutline(const TRect& aRect,TSize aSize);

	void SetupDevice() const;

	void ShadowFadeArea(const TRegion* aRegion,TInt8 aShadowMode);

	TBool UserClipRect(TRect& aRect);

	CGraphicsAccelerator* GraphicsAccelerator();

	TUint MemoryOffsetForPixelPitch(TUint aX, TDisplayMode aDisplayMode);

	TUint32* GetScanLineOffsetPtr(CBitwiseBitmap* aSrce, TUint32*& aSlptr, TInt aLength, TPoint aPixel,TUint32* aBase, TLineScanningPosition& aLineScanningPosition, TUint aXOffset);

	void APIExGetUnderlineMetrics(TAny*& aOutput);

	TInt APIExSetShadowColor(TAny* aShadowColor);

	TInt APIExGetShadowColor(TAny*& aShadowColor);

	TInt FastBlendInterface(const CBitwiseBitmap* aSource, const CBitwiseBitmap* aMask, MFastBlend*& aFastBlend) const;

	TInt APIExIsFbsBitGc(TAny*& aIsCFbsBitGc);

	TDisplayMode ScanLineBufferDisplayMode(CFbsDrawDevice* aDrawDevice);

	TInt BaselineCorrection();

	CFbsRasterizer* PrepareRasterizerForExtendedBitmap(const CFbsBitmap& aBitmap);

	CFbsRasterizer* PrepareRasterizerForExtendedBitmap(const CFbsBitmap& aBitmap, const TRect& aDestRect, const TPoint& aOffset);

	CFbsRasterizer* PrepareRasterizerForExtendedBitmap(const CFbsBitmap& aBitmap, const TRect& aDestRect, const TRect& aSourceRect);

protected:

	/** This function should not be used by externals but must retain the

	same ordinal number to maintain BC, thus is exported.*/

	IMPORT_C TInt APIExtension(TUid aUid, TAny*& aOutput, TAny* aInput);

private:

	IMPORT_C void Reserved_CGraphicsContext_2();

	IMPORT_C void Reserved_CBitmapContext_1();

	IMPORT_C void Reserved_CBitmapContext_2();

	IMPORT_C void Reserved_CBitmapContext_3();

	IMPORT_C virtual void Reserved_CFbsBitGc_1();	

	IMPORT_C virtual void Reserved_CFbsBitGc_2();	

	IMPORT_C virtual void Reserved_CFbsBitGc_3();	

	IMPORT_C virtual void Reserved_CFbsBitGc_4();	

	IMPORT_C virtual void Reserved_CFbsBitGc_5();	

private:

	CFbsBitGcBitmap iBrushBitmap;

	TBool iBrushUsed;

	TRgb iBrushColor;

	TPoint iBrushOrigin;

	TBrushStyle iBrushStyle;

	TRect iClipRect;

	TRegionFix<1> iDefaultRegion;

	const TRegion* iDefaultRegionPtr;

	TRect iUserClipRect;

	CFbsDevice* iDevice;

	TPoint iDitherOrigin;