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windowing/windowserver/inc/CommandBuffer.h
changeset 0 5d03bc08d59c 
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/windowing/windowserver/inc/CommandBuffer.h	Tue Feb 02 01:47:50 2010 +0200
@@ -0,0 +1,349 @@
+// 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__
FCL/sf/os/graphics