// Copyright (c) 2006-2009 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 __COMMANDBUFFER_H__

#define __COMMANDBUFFER_H__

#include <w32std.h>

#include <s32mem.h>

#include <graphics/remotegcutils.h>

class CBitmapCache;

class CFontsCache;

class CDrawableCacheBase;

class CDrawSection;

class MWsGraphicsContext;

/**

MWsGraphicResolver should be implemented by CWsGraphicDrawers that want to be able to play DrawWsGraphic drawcommands.

@publishedPartner

@released*/

class MWsGraphicResolver

	{

public:

	/**

	This method is called when a DrawWsGraphics drawcommand is played by the commandbuffer. The CWsGraphicDrawer that

	implements this method needs to resolve the WsGraphics from the MWsGraphicDrawerEnvironment and then draw it.

	@param aId The id of the WsGraphic.

	@param aIsUid If ETrue the WsGraphic has a uid.

	@param aRect The rect to draw the WsGraphic in.

	@param aData Data passed along with the DrawWsGraphic command.

	*/

	virtual void DrawWsGraphic(TInt aId, TBool aIsUid, const TRect& aRect, const TDesC8& aData) const = 0;

	};

/**

The commandbuffer can record and play drawcommands.

It has an array of CDrawSections which contains information about every redraw that has been recorded.

@publishedPartner

@released*/

NONSHARABLE_CLASS(CCommandBuffer): public CBase

	{

public:

	IMPORT_C static CCommandBuffer* NewL();	

	IMPORT_C ~CCommandBuffer();	

	IMPORT_C void InternalizeL(const TDesC8& aBuf);

	IMPORT_C void InternalizeAppendL(const TDesC8& aBuf);

	IMPORT_C const TRegion& ClippingRegion() const;

	IMPORT_C TInt Play(const TPoint& aPosition, const TRect& aSourceRect, const MWsGraphicResolver& aWsGraphicResolver, CBitmapContext& aBitmapContext);

	IMPORT_C TInt Play(const TPoint& aMasterOrigin, const TRegion * aMasterClippingRegion, const TRect& aMasterClippingRect, const MWsGraphicResolver& aWsGraphicResolver, CBitmapContext& aContext);

	IMPORT_C TInt Play(const TPoint& aOffset, const TRegion* aClippingRegion, const TRect& aSourceRect, const MWsGraphicResolver& aWsGraphicResolver, MWsGraphicsContext& aGraphicsContext);

	IMPORT_C TInt Play(const TPoint& aOffset, const TRegion* aClippingRegion, const TRect& aSourceRect, RWsSession& aWsSession, CWindowGc& aWindowGc);

	IMPORT_C TBool IsIdentical(const CCommandBuffer& aBuffer) const;

	void ExternalizeL(RWsGraphicMsgBuf& aMsgBuf, TBool aEntireBuffer);

	void Reset();	

	void Prepare(const TRect& aDrawRect);

	TInt Finish(const TRect& aDrawRect, const TRect& aBoundingRect, TBool aHasBitmapCommand);	

	template<typename TClass> void Write(const TClass& aValue);	

	void WriteText(const TDesC16 &aText);

	void WriteText(const TDesC8 &aText);

private:

	void ConstructL();

	CCommandBuffer();

	// Help methods

	void Tidy();

	TBool AllSectionsExternalized() const; 

	TBool CheckForDuplicate(const CDrawSection& aDrawSection) const;

	void UpdateClippingRegion(TInt aDrawSectionIndex);

	// Reading writing

	void Write(const TUint8* aSrc, TUint aLength);	

	void DoWriteTextL(const TDesC8 &aText);	

	void ReadL(TUint8* aDest, TUint aLength);

	template<typename TClass> void ReadL(TClass& aValue);	

	void ReadTextLC(TPtrC8& aText);

	void ReadTextLC(TPtrC16& aText);

	void DoReadTextLC(TPtrC8& aText,TBool a16Bit);

	// Drawing the commands

#ifdef SYMBIAN_GRAPHICS_GCE

	template<typename ContextType> void DoPlayL(const MWsGraphicResolver& aWsGraphicResolver, ContextType& aGraphicsContext);

	template<typename ContextType> void DrawSectionL(const CDrawSection& aDrawSection, const MWsGraphicResolver& aWsGraphicResolver, ContextType& aGraphicsContext);

#else

	void DoPlayL(const MWsGraphicResolver& aWsGraphicResolver, CBitmapContext& aBitmapContext);

	void DrawSectionL(const CDrawSection& aDrawSection, const MWsGraphicResolver& aWsGraphicResolver, CBitmapContext& aBitmapContext);

#endif

#if defined(SYMBIAN_GRAPHICS_GCE)

	template<typename ContextType> void Clear(ContextType& aGraphicsContext) const;

	template<typename ContextType> void ClearRectL(ContextType& aGraphicsContext);

	template<typename ContextType> void CopyRectL(ContextType& aGraphicsContext);

	template<typename ContextType> void BitBlt1L(ContextType& aGraphicsContext);

	void DoBitBlt1L(CWindowGc& aWindowGc, TPoint aPoint, TInt aHandle);

	void DoBitBlt1L(MWsGraphicsContext& aGraphicsContext, TPoint aPoint, TInt aHandle);

	template<typename ContextType> void BitBlt2L(ContextType& aGraphicsContext);

	void DoBitBlt2L(CWindowGc& aWindowGc, TPoint aPoint, TInt aHandle, TRect aSourceRect);

	void DoBitBlt2L(MWsGraphicsContext& aGraphicsContext, TPoint aPoint, TInt aHandle, TRect aSourceRect);

	template<typename ContextType> void BitBltMaskedL(ContextType& aGraphicsContext);

	void DoBitBltMaskedL(CWindowGc& aWindowGc, TPoint aPoint, TInt aBitmapHandle, TRect aSourceRect, TInt aMaskHandle, TBool aInvertMask);

	void DoBitBltMaskedL(MWsGraphicsContext& aGraphicsContext, TPoint aPoint, TInt aBitmapHandle, TRect aSourceRect, TInt aMaskHandle, TBool aInvertMask);

	void SetFadedL(CWindowGc& aWindowGc);

	void SetFadingParametersL(CWindowGc& aWindowGc);

	template<typename ContextType> void AlphaBlendBitmapsL(ContextType& aGraphicsContext);

	void DoAlphaBlendBitmapsL(CWindowGc& aWindowGc, TPoint aDestPoint, TInt aSrcHandle, TRect aSourceRect, TInt aAlphaHandle, TPoint aAlphaPoint);

	void DoAlphaBlendBitmapsL(MWsGraphicsContext& aGraphicsContext, TPoint aDestPoint, TInt aSrcHandle, TRect aSourceRect, TInt aAlphaHandle, TPoint aAlphaPoint);

	template<typename ContextType> void SetOriginL(ContextType& aGraphicsContext);

	template<typename ContextType> void SetDrawModeL(ContextType& aGraphicsContext);

	void DoSetDrawModeL(CWindowGc& aWindowGc, CGraphicsContext::TDrawMode aDrawMode);

	void DoSetDrawModeL(MWsGraphicsContext& aGraphicsContext, CGraphicsContext::TDrawMode aDrawMode);

	template<typename ContextType> void SetClippingRectL(ContextType& aGraphicsContext);

	template<typename ContextType> void CancelClippingRect(ContextType& aGraphicsContext);

	void Reset(CWindowGc& aWindowGc);

	void Reset(MWsGraphicsContext& aGraphicsContext);

	template<typename ContextType> void UseFontL(ContextType& aGraphicsContext);

	void DoUseFontL(CWindowGc& aWindowGc, TInt aFontHandle);

	void DoUseFontL(MWsGraphicsContext& aGraphicsContext, TInt aFontHandle);

	void DiscardFont(CWindowGc& aWindowGc) const;

	void DiscardFont(MWsGraphicsContext& aGraphicsContext) const;

	template<typename ContextType> void SetUnderlineStyleL(ContextType& aGraphicsContext);

	void DoSetUnderlineStyleL(CWindowGc& aWindowGc, TFontUnderline aUnderlineStyle);

	void DoSetUnderlineStyleL(MWsGraphicsContext& aGraphicsContext, TFontUnderline aUnderlineStyle);

	template<typename ContextType> void SetStrikethroughStyleL(ContextType& aGraphicsContext);

	void DoSetStrikethroughStyleL(CWindowGc& aWindowGc, TFontStrikethrough aStrikethroughStyle);

	void DoSetStrikethroughStyleL(MWsGraphicsContext& aGraphicsContext, TFontStrikethrough aStrikethroughStyle);

	template<typename ContextType> void SetWordJustificationL(ContextType& aGraphicsContext);

	template<typename ContextType> void SetCharJustificationL(ContextType& aGraphicsContext);

	template<typename ContextType> void SetPenColorL(ContextType& aGraphicsContext);

	template<typename ContextType> void SetPenStyleL(ContextType& aGraphicsContext);

	void DoSetPenStyleL(CWindowGc& aWindowGc, CGraphicsContext::TPenStyle aPenStyle);

	void DoSetPenStyleL(MWsGraphicsContext& aGraphicsContext, CGraphicsContext::TPenStyle aPenStyle);

	template<typename ContextType> void SetPenSizeL(ContextType& aGraphicsContext);

	void DoSetPenSizeL(CWindowGc& aWindowGc, TSize aSize);

	void DoSetPenSizeL(MWsGraphicsContext& aGraphicsContext, TSize aSize);

	template<typename ContextType> void SetBrushColorL(ContextType& aGraphicsContext);

	template<typename ContextType> void SetBrushStyleL(ContextType& aGraphicsContext);

	void DoSetBrushStyleL(CWindowGc& aWindowGc, CGraphicsContext::TBrushStyle aBrushStyle);

	void DoSetBrushStyleL(MWsGraphicsContext& aGraphicsContext, CGraphicsContext::TBrushStyle aBrushStyle);

	template<typename ContextType> void SetBrushOriginL(ContextType& aGraphicsContext);

	template<typename ContextType> void UseBrushPatternL(ContextType& aGraphicsContext);

	void DoUseBrushPatternL(CWindowGc& aWindowGc, TInt aDeviceHandle);

	void DoUseBrushPatternL(MWsGraphicsContext& aGraphicsContext, TInt aDeviceHandle);

	void DiscardBrushPattern(CWindowGc& aWindowGc) const;

	void DiscardBrushPattern(MWsGraphicsContext& aGraphicsContext) const;

	template<typename ContextType> void MoveToL(ContextType& aGraphicsContext);

	template<typename ContextType> void MoveByL(ContextType& aGraphicsContext);

	template<typename ContextType> void PlotL(ContextType& aGraphicsContext);

	template<typename ContextType> void DrawArcL(ContextType& aGraphicsContext);

	template<typename ContextType> void DrawLineL(ContextType& aGraphicsContext);

	template<typename ContextType> void DrawLineToL(ContextType& aGraphicsContext);

	template<typename ContextType> void DrawLineByL(ContextType& aGraphicsContext);

	void DrawPolyLineL(CWindowGc& aWindowGc);

	void DrawPolyLineL(MWsGraphicsContext& aGraphicsContext);

	template<typename ContextType> void DrawPieL(ContextType& aGraphicsContext);

	template<typename ContextType> void DrawEllipseL(ContextType& aGraphicsContext);

	template<typename ContextType> void DrawRectL(ContextType& aGraphicsContext);

	template<typename ContextType> void DrawRoundRectL(ContextType& aGraphicsContext);

	void DrawPolygonL(CWindowGc& aWindowGc);

	void DrawPolygonL(MWsGraphicsContext& aGraphicsContext);

	void DrawBitmap1L(CWindowGc& aWindowGc);

	void DrawBitmap1L(MWsGraphicsContext& aGraphicsContext);

	template<typename ContextType> void DrawBitmap2L(ContextType& aGraphicsContext);

	void DoDrawBitmap2L(CWindowGc& aWindowGc, TRect aDestRect, TInt aBitmapHandle);

	void DoDrawBitmap2L(MWsGraphicsContext& aGraphicsContext, TRect aDestRect, TInt aBitmapHandle);

	template<typename ContextType> void DrawBitmap3L(ContextType& aGraphicsContext);

	void DoDrawBitmap3L(CWindowGc& aWindowGc, TRect aDestRect, TInt aBitmapHandle, TRect aSourceRect);

	void DoDrawBitmap3L(MWsGraphicsContext& aGraphicsContext, TRect aDestRect, TInt aBitmapHandle, TRect aSourceRect);

	template<typename ContextType> void DrawBitmapMaskedL(ContextType& aGraphicsContext);

	void DoDrawBitmapMaskedL(CWindowGc& aWindowGc, TRect aDestRect, TInt aBitmapHandle, TRect aSourceRect, TInt aMaskHandle, TBool aInvertedMask);

	void DoDrawBitmapMaskedL(MWsGraphicsContext& aGraphicsContext, TRect aDestRect, TInt aBitmapHandle, TRect aSourceRect, TInt aMaskHandle, TBool aInvertedMask);

	template<typename ContextType> void DrawText1L(ContextType& aGraphicsContext);

	void DoDrawText1L(CWindowGc& aWindowGc, TPtrC16 aText, TPoint aPoint);

	void DoDrawText1L(MWsGraphicsContext& aGraphicsContext, TPtrC16 aText, TPoint aPoint);

	template<typename ContextType> void DrawText2L(ContextType& aGraphicsContext);

	void DoDrawText2L(CWindowGc& aWindowGc, TPtrC16 aText, TRect aBox, TInt aBaselineOffset, CGraphicsContext::TTextAlign aHoriz, TInt aLeftMargin);

	void DoDrawText2L(MWsGraphicsContext& aGraphicsContext, TPtrC16 aText, TRect aBox, TInt aBaselineOffset, CGraphicsContext::TTextAlign aHoriz, TInt aLeftMargin);

	template<typename ContextType> void DrawText3L(ContextType& aGraphicsContext);

	void DoDrawText3L(CWindowGc& aWindowGc, TPtrC16 aText, TPoint aPoint);

	void DoDrawText3L(MWsGraphicsContext& aGraphicsContext, TPtrC16 aText, TPoint aPoint);

	template<typename ContextType> void DrawText4L(ContextType& aGraphicsContext);

	void DoDrawText4L(CWindowGc& aWindowGc, TPtrC16 aText, CGraphicsContext::TTextParameters aParam, TPoint aPoint);

	void DoDrawText4L(MWsGraphicsContext& aGraphicsContext, TPtrC16 aText, CGraphicsContext::TTextParameters aParam, TPoint aPoint);

	template<typename ContextType> void DrawText5L(ContextType& aGraphicsContext);

	void DoDrawText5L(CWindowGc& aWindowGc, TPtrC16 aText, CGraphicsContext::TTextParameters aParam, TRect aBox, TInt aBaselineOffset, CGraphicsContext::TTextAlign aHoriz, TInt aLeftMargin);

	void DoDrawText5L(MWsGraphicsContext& aGraphicsContext, TPtrC16 aText, CGraphicsContext::TTextParameters aParam, TRect aBox, TInt aBaselineOffset, CGraphicsContext::TTextAlign aHoriz, TInt aLeftMargin);

	template<typename ContextType> void MapColorsL(ContextType& aGraphicsContext);

	template<typename ContextType> void SetClippingRegionL(ContextType& aGraphicsContext);

	template<typename ContextType> void CancelClippingRegion(ContextType& aGraphicsContext);

	void DoCancelClippingRegion(CWindowGc& aWindowGc);

	void DoCancelClippingRegion(MWsGraphicsContext& aGraphicsContext);

	template<typename ContextType> void DrawTextVertical1L(ContextType& aGraphicsContext);

	void DoDrawTextVertical1L(CWindowGc& aWindowGc, TPtrC16 aText, TPoint aPoint, TBool aUp);

	void DoDrawTextVertical1L(MWsGraphicsContext& aGraphicsContext, TPtrC16 aText, TPoint aPoint, TBool aUp);

	template<typename ContextType> void DrawTextVertical2L(ContextType& aGraphicsContext);

	void DoDrawTextVertical2L(CWindowGc& aWindowGc, TPtrC16 aText, TRect aBox, TInt aBaselineOffset, TBool aUp, CGraphicsContext::TTextAlign aVertical, TInt aMargin);

	void DoDrawTextVertical2L(MWsGraphicsContext& aGraphicsContext, TPtrC16 aText, TRect aBox, TInt aBaselineOffset, TBool aUp, CGraphicsContext::TTextAlign aVertical, TInt aMargin);

	template<typename ContextType> void DrawTextVertical3L(ContextType& aGraphicsContext);

	void DoDrawTextVertical3L(CWindowGc& aWindowGc, TPtrC16 aText, CGraphicsContext::TTextParameters aParam, TPoint aPoint, TBool aUp);

	void DoDrawTextVertical3L(MWsGraphicsContext& aGraphicsContext, TPtrC16 aText, CGraphicsContext::TTextParameters aParam, TPoint aPoint, TBool aUp);

	template<typename ContextType> void DrawTextVertical4L(ContextType& aGraphicsContext);

	void DoDrawTextVertical4L(CWindowGc& aWindowGc, TPtrC16 aText, CGraphicsContext::TTextParameters aParam, TRect aBox, TInt aBaselineOffset, TBool aUp, CGraphicsContext::TTextAlign aVertical, TInt aMargin);

	void DoDrawTextVertical4L(MWsGraphicsContext& aGraphicsContext, TPtrC16 aText, CGraphicsContext::TTextParameters aParam, TRect aBox, TInt aBaselineOffset, TBool aUp, CGraphicsContext::TTextAlign aVertical, TInt aMargin);

	void DrawWsGraphic1L(const MWsGraphicResolver& aWsGraphicResolver);

	void DrawWsGraphic2L(const MWsGraphicResolver& aWsGraphicResolver);

	template<typename ContextType> void SetShadowColorL(ContextType& aGraphicsContext);

	void DoSetShadowColorL(CWindowGc& aWindowGc, TRgb aShadowColor);

	void DoSetShadowColorL(MWsGraphicsContext& aGraphicsContext, TRgb aShadowColor);

	template<typename ContextType> void DrawResourceToPosL(ContextType& aGraphicsContext);

	template<typename ContextType> void DrawResourceToRectL(ContextType& aGraphicsContext);

	template<typename ContextType> void DrawResourceFromRectToRectL(ContextType& aGraphicsContext);

	template<typename ContextType> void DrawResourceWithDataL(ContextType& aGraphicsContext);

	void DoDrawResourceToPos(CWindowGc& aGraphicsContext, const TAny* aDrawableSource, const TPoint& aPos, CWindowGc::TGraphicsRotation aRotation);

	void DoDrawResourceToRect(CWindowGc& aGraphicsContext, const TAny* aDrawableSource, const TRect& aRect, CWindowGc::TGraphicsRotation aRotation);

	void DoDrawResourceFromRectToRect(CWindowGc& aGraphicsContext, const TAny* aDrawableSource, const TRect& aRectDest, const TRect& aRectSrc, CWindowGc::TGraphicsRotation aRotation);

	void DoDrawResourceWithData(CWindowGc& aGraphicsContext, const TAny* aDrawableSource, const TRect& aRect, const TDesC8& aParam);

	void DoDrawResourceToPos(MWsGraphicsContext& aGraphicsContext, const TAny* aDrawableSource, const TPoint& aPos, CWindowGc::TGraphicsRotation aRotation);

	void DoDrawResourceToRect(MWsGraphicsContext& aGraphicsContext, const TAny* aDrawableSource, const TRect& aRect, CWindowGc::TGraphicsRotation aRotation);

	void DoDrawResourceFromRectToRect(MWsGraphicsContext& aGraphicsContext, const TAny* aDrawableSource, const TRect& aRectDest, const TRect& aRectSrc, CWindowGc::TGraphicsRotation aRotation);

	void DoDrawResourceWithData(MWsGraphicsContext& aGraphicsContext, const TAny* aDrawableSource, const TRect& aRect, const TDesC8& aParam);

#else //SYMBIAN_GRAPHICS_GCE

	void Clear(CBitmapContext& aBitmapContext) const;

	void ClearRectL(CBitmapContext& aBitmapContext);	

	void CopyRectL(CBitmapContext& aBitmapContext);

	void BitBlt1L(CBitmapContext& aBitmapContext);

	void BitBlt2L(CBitmapContext& aBitmapContext);

	void BitBltMaskedL(CBitmapContext& aBitmapContext);

	void SetFadedL(CBitmapContext& aBitmapContext);

	void SetFadingParametersL(CBitmapContext& aBitmapContext);

	void AlphaBlendBitmapsL(CBitmapContext& aBitmapContext);

	void SetOriginL(CBitmapContext& aBitmapContext);

	void SetDrawModeL(CBitmapContext& aBitmapContext);

	void SetClippingRectL(CBitmapContext& aBitmapContext);

	void CancelClippingRect(CBitmapContext& aBitmapContext);

	void Reset(CBitmapContext& aBitmapContext);

	void UseFontL(CBitmapContext& aBitmapContext);

	void DiscardFont(CBitmapContext& aBitmapContext) const;

	void SetUnderlineStyleL(CBitmapContext& aBitmapContext);

	void SetStrikethroughStyleL(CBitmapContext& aBitmapContext);

	void SetWordJustificationL(CBitmapContext& aBitmapContext);	

	void SetCharJustificationL(CBitmapContext& aBitmapContext);

	void SetPenColorL(CBitmapContext& aBitmapContext);

	void SetPenStyleL(CBitmapContext& aBitmapContext);

	void SetPenSizeL(CBitmapContext& aBitmapContext);

	void SetBrushColorL(CBitmapContext& aBitmapContext);

	void SetBrushStyleL(CBitmapContext& aBitmapContext);

	void SetBrushOriginL(CBitmapContext& aBitmapContext);

	void UseBrushPatternL(CBitmapContext& aBitmapContext);

	void DiscardBrushPattern(CBitmapContext& aBitmapContext) const;

	void MoveToL(CBitmapContext& aBitmapContext);

	void MoveByL(CBitmapContext& aBitmapContext);

	void PlotL(CBitmapContext& aBitmapContext);

	void DrawArcL(CBitmapContext& aBitmapContext);

	void DrawLineL(CBitmapContext& aBitmapContext);

	void DrawLineToL(CBitmapContext& aBitmapContext);

	void DrawLineByL(CBitmapContext& aBitmapContext);

	void DrawPolyLineL(CBitmapContext& aBitmapContext);

	void DrawPieL(CBitmapContext& aBitmapContext);

	void DrawEllipseL(CBitmapContext& aBitmapContext);

	void DrawRectL(CBitmapContext& aBitmapContext);

	void DrawRoundRectL(CBitmapContext& aBitmapContext);

	void DrawPolygonL(CBitmapContext& aBitmapContext);

	void DrawBitmap1L(CBitmapContext& aBitmapContext);

	void DrawBitmap2L(CBitmapContext& aBitmapContext);

	void DrawBitmap3L(CBitmapContext& aBitmapContext);

	void DrawBitmapMaskedL(CBitmapContext& aBitmapContext);

	void DrawText1L(CBitmapContext& aBitmapContext);

	void DrawText2L(CBitmapContext& aBitmapContext);

	void DrawText3L(CBitmapContext& aBitmapContext);

	void MapColorsL(CBitmapContext& aBitmapContext);

	void SetClippingRegionL(CBitmapContext& aBitmapContext);

	void CancelClippingRegion(CBitmapContext& aBitmapContext);

	void DrawTextVertical1L(CBitmapContext& aBitmapContext);

	void DrawTextVertical2L(CBitmapContext& aBitmapContext);

	void DrawWsGraphic1L(const MWsGraphicResolver& aWsGraphicResolver);

	void DrawWsGraphic2L(const MWsGraphicResolver& aWsGraphicResolver);

	void SetShadowColorL(CBitmapContext& aBitmapContext);

#endif //SYMBIAN_GRAPHICS_GCE

private:

	// Values set by the system calling play

	TPoint iMasterOrigin;

	const TRegion * iMasterClippingRegion;

	const TRegion * iActiveMasterClippingRegion;

	RRegionBuf<10> iDrawSectionClippingRegion;

	TRect iMasterClippingRect;

	TRect iDrawSectionRect;

	// Values set by the draw commands executed during play

	TPoint iOrigin;

	RRegionBuf<10> iClippingRegion;

	TRect iClippingRect;

	TBool iParsedClippingRegionIsSet;

#ifndef SYMBIAN_GRAPHICS_GCE 

	TPoint iOffSet; //only used by nonnga in order to preserve compatibility with nga

	RRegionBuf<10> iCurrentSectionClippingRegion; //only used by nonnga in order to preserve compatibility with nga

#else

	RRegion iIntersectedRegion;

	CDrawableCacheBase* iDrawableCache;

#endif

	TInt iError;		

	CBufBase* iRecordSegBuf;

	CBitmapCache* iBitmapCache;

	CFontsCache* iFontCache;	

	CBufBase* iBufRead;

	RBufReadStream iBufReadStream;

	RPointerArray<CDrawSection> iDrawSections;

	};

template<typename TClass> void CCommandBuffer::Write(const TClass& aValue)

	{

	__ASSERT_COMPILE(sizeof(TClass) <= KMaxTUint8);

	#ifdef _DEBUG

		const TUint8 size = sizeof(TClass);

		Write(reinterpret_cast<const TUint8*>(&size), 1);

	#endif

	Write(reinterpret_cast<const TUint8*>(&aValue), sizeof(TClass));

	}

template<typename TClass> void CCommandBuffer::ReadL(TClass& aValue)

	{

	__ASSERT_COMPILE(sizeof(TClass) <= KMaxTUint8);	

	#ifdef _DEBUG

		TUint8 size = 0;

		ReadL(reinterpret_cast<TUint8*>(&size), 1);

		ASSERT(sizeof(TClass) == size);

	#endif

	ReadL(reinterpret_cast<TUint8*>(&aValue), sizeof(TClass));	

	}

#endif	// __COMMANDBUFFER_H__