author | William Roberts <williamr@symbian.org> |
Fri, 12 Nov 2010 11:42:24 +0000 | |
branch | RCL_3 |
changeset 66 | 8ee165fddeb6 |
parent 3 | d8a3531bc6b8 |
permissions | -rw-r--r-- |
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/* |
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* Copyright (c) 2006-2008 Nokia Corporation and/or its subsidiary(-ies). |
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* All rights reserved. |
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* This component and the accompanying materials are made available |
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* under the terms of "Eclipse Public License v1.0" |
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* which accompanies this distribution, and is available |
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* at the URL "http://www.eclipse.org/legal/epl-v10.html". |
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* |
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* Initial Contributors: |
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* Nokia Corporation - initial contribution. |
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* |
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* Contributors: |
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* |
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* Description: AlfRenderStage provides a method for redirect avkon drawing to a graphics accelerator |
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* |
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*/ |
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#ifndef CALFRSGC_H_ |
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#define CALFRSGC_H_ |
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#include <graphics/wsgraphicscontext.h> |
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#include <s32mem.h> |
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#include <e32std.h> |
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#include <gdi.h> |
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class CAlfRsSendBuffer; |
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class CFbsBitGc; |
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class CFbsScreenDevice; |
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const TInt KAlfRsGcMaxClippingRects = 20; |
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/** |
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* This class serializes commands sent to graphics context by using CAlfRsSendBuffer . |
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* |
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* @lib alfrenderstage.lib |
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* @since S60 v5.2 |
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*/ |
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NONSHARABLE_CLASS(CAlfGraphicsContext) : public CBase, public MWsGraphicsContext |
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{ |
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public: // New methods |
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/** |
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* NewL |
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* |
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* Constructor |
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* |
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* @param aAlfSendBuffer Send buffer |
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* @return New instance of the class |
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*/ |
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static CAlfGraphicsContext* NewL( CAlfRsSendBuffer& aAlfSendBuffer ); |
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/** |
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* C++ destructor |
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*/ |
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~CAlfGraphicsContext(); |
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/** |
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* ResetDrawCommandCount |
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* |
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* Each call of command which requires drawing increases iDrawCommandCount. This is used for |
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* skipping serialization of draw commands that have no effect on screen. @See DrawCommandCount. |
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*/ |
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void ResetDrawCommandCount() |
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{ |
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iDrawCommandCount = 0; |
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}; |
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/** |
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* DrawCommandCount |
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* |
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* @return Amount of effective draw commands since last call of ResetDrawCommand. |
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*/ |
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TInt DrawCommandCount() |
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{ |
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return iDrawCommandCount; |
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}; |
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#ifdef _OPTIMIZE_WS_COMMANDS_ADVANCED_ |
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/** |
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* CheckDelayedClipping |
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* |
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* Assertains if the previous clipping (EAlfSetClipRegion) command can be delayed or skipped. |
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* |
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* @param aClippingRect |
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* @return previous clipping command status |
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*/ |
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TBool CheckDelayedClipping( TRect aClippingRect ); |
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#endif |
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#ifdef _OPTIMIZE_WS_COMMANDS_BASIC_ |
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/** |
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* FlushStateL |
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* |
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* Flushes all the modified Gc states. |
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* |
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* @param aRollbackClippingState contains states that should be rollbacked after flush. |
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* Currently this is relevant only for clipping. |
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* |
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*/ |
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void FlushStateL( TInt& aRollbackClippingState ); |
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#endif |
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public: // From MWsGraphicsContext |
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/** |
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* Following commands are serialized |
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*/ |
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void BitBlt(const TPoint& aDestPos, const CFbsBitmap& aSourceBitmap); |
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void BitBlt(const TPoint& aDestPos, const CFbsBitmap& aSourceBitmap, const TRect& aSourceRect); |
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void BitBltMasked(const TPoint& aDestPos, const CFbsBitmap& aSourceBitmap, const TRect& aSourceRect, const CFbsBitmap& aMaskBitmap, TBool aInvertMask); |
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void BitBltMasked(const TPoint& aDestPos, const CFbsBitmap& aSourceBitmap, const TRect& aSourceRect, const CFbsBitmap& aMaskBitmap, const TPoint& aMaskPos); |
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void ResetClippingRegion(); |
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void Clear(); |
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void Clear(const TRect& aRect); |
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void ResetBrushPattern(); |
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void ResetFont(); |
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void DrawArc(const TRect& aRect, const TPoint& aStart, const TPoint& aEnd); |
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void DrawPie(const TRect& aRect, const TPoint& aStart, const TPoint& aEnd); |
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void DrawBitmap(const TRect& aDestRect, const CFbsBitmap& aSourceBitmap); |
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void DrawBitmap(const TRect& aDestRect, const CFbsBitmap& aSourceBitmap, const TRect& aSourceRect); |
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void DrawBitmap(const TPoint &aTopLeft, const CFbsBitmap &aSource); |
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void DrawBitmapMasked(const TRect& aDestRect, const CFbsBitmap& aSourceBitmap, const TRect& aSourceRect, const CFbsBitmap& aMaskBitmap, TBool aInvertMask); |
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void DrawRoundRect(const TRect& aRect, const TSize& aEllipse); |
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void DrawPolyLine(const TArray<TPoint>& aPointList); |
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void DrawPolyLine(const CArrayFix<TPoint>* aPointList); |
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void DrawPolyLine(const TPoint *aPointList, TInt aNumPoints); |
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void DrawPolyLineNoEndPoint(const TArray<TPoint>& aPointList); |
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void DrawPolyLineNoEndPoint(const CArrayFix<TPoint>* aPointList); |
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void DrawPolyLineNoEndPoint(const TPoint *aPointList, TInt aNumPoints); |
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void DrawPolygon(const CArrayFix<TPoint>* aPointList, TFillRule aFillRule=EAlternate); |
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void DrawPolygon(const TArray<TPoint>& aPointList, TFillRule aFillRule=EAlternate); |
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void DrawPolygon(const TPoint *aPointList, TInt aNumPoints, TFillRule aFillRule=EAlternate); |
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void DrawEllipse(const TRect& aRect); |
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void DrawLine(const TPoint& aStart, const TPoint& aEnd); |
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void DrawLineTo(const TPoint& aPoint); |
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void DrawLineBy(const TPoint& aVector); |
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void DrawRect(const TRect& aRect); |
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void DrawText(const TDesC& aText,const TTextParameters* aParam); |
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void DrawText(const TDesC& aText,const TTextParameters* aParam,const TPoint& aPosition); |
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void DrawText(const TDesC& aText,const TTextParameters* aParam,const TRect& aClipRect); |
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void DrawText(const TDesC& aText,const TTextParameters* aParam,const TRect& aClipFillRect,TInt aBaselineOffset,TTextAlign aHrz=ELeft,TInt aMargin=0); |
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void DrawTextVertical(const TDesC& aText,const TTextParameters* aParam,TBool aUp); |
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void DrawTextVertical(const TDesC& aText,const TTextParameters* aParam,const TPoint& aPosition,TBool aUp); |
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void DrawTextVertical(const TDesC& aText,const TTextParameters* aParam,const TRect& aClipRect,TBool aUp); |
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void DrawTextVertical(const TDesC& aText,const TTextParameters* aParam,const TRect& aClipRect,TInt aBaselineOffset,TBool aUp,TTextAlign aVert=ELeft,TInt aMargin=0); |
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void DrawTextVertical(const TDesC& aText,const TTextParameters* aParam,const TRect& aClipRect,TInt aBaselineOffset,TInt aTextWidth,TBool aUp,TTextAlign aVert=ELeft,TInt aMargin=0); |
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void MoveTo(const TPoint& aPoint); |
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void MoveBy(const TPoint& aVector); |
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void Plot(const TPoint& aPoint); |
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void Reset(); |
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void SetBrushColor(const TRgb& aColor); |
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void SetBrushOrigin(const TPoint& aOrigin); |
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void SetBrushStyle(TBrushStyle aBrushStyle); |
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void SetClippingRegion(const TRegion& aRegion); |
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void SetDrawMode(TDrawMode aDrawMode); |
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void SetOrigin(const TPoint& aPoint = TPoint(0, 0)); |
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void SetPenColor(const TRgb& aColor); |
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void SetPenStyle(TPenStyle aPenStyle); |
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void SetPenSize(const TSize& aSize); |
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void SetTextShadowColor(const TRgb& aColor); |
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void SetCharJustification(TInt aExcessWidth, TInt aNumChars); |
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void SetWordJustification(TInt aExcessWidth, TInt aNumGaps); |
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void SetUnderlineStyle(TFontUnderline aUnderlineStyle); |
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void SetStrikethroughStyle(TFontStrikethrough aStrikethroughStyle); |
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void SetBrushPattern(const CFbsBitmap& aBitmap); |
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void SetBrushPattern(TInt aFbsBitmapHandle); |
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void SetFont(const CFont* aFont); |
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void CopyRect(const TPoint& aOffset, const TRect& aRect); |
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|
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void UpdateJustification(const TDesC& aText,const TTextParameters* aParam); |
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void UpdateJustificationVertical(const TDesC& aText,const TTextParameters* aParam,TBool aUp); |
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void SetFontNoDuplicate(const CFont* aFont); |
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TBool HasBrushPattern() const; |
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TBool HasFont() const; |
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void InternalizeL(RReadStream& aReadStream); |
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void ExternalizeL(RWriteStream& aWriteStream); |
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TRgb BrushColor() const; |
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TRgb PenColor() const; |
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TRgb TextShadowColor() const; |
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void CopySettings(const MWsGraphicsContext& aGc); |
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void SetFaded(TBool aFaded); |
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void SetFadingParameters(TUint8 aBlackMap, TUint8 aWhiteMap); |
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void FadeArea(const TRegion *aRegion); |
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void MapColors(const TRect &aRect, const TRgb *aColors, TInt aNumPairs=2, TBool aMapForwards=ETrue); |
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void SetUserDisplayMode(TDisplayMode aDisplayMode); |
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TInt UseFont(TInt aFontHandle); |
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|
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/** |
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* GetError |
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* |
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* Return current error status of MWsGraphicsContext |
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* |
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* @return |
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*/ |
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TInt GetError() |
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{ |
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return KErrNone; // @todo |
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} |
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/** |
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* Origin |
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* |
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* The origin of the GC relative to the screen's origin |
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* |
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* @return Origin |
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*/ |
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TPoint Origin() const; |
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/** |
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* ClippingRegion |
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* |
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* The clipping region currently being used |
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* |
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* @return Clipping region |
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*/ |
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const TRegion& ClippingRegion() |
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{ |
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return iClippingRegion; |
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} |
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|
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/** |
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* Push |
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* |
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* Saves the state of the GC to an internal buffer. Several GC states can be saved in a FILO. |
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* Do not restore a GC (using Pop()) that wasn't properly saved! |
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* |
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* @return KErrNone if successful, else one of the system-wide error codes |
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*/ |
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TInt Push() |
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{ |
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return KErrNotSupported; // @todo |
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} |
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|
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/** |
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* Pop |
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* |
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* Restores the last GC state that was saved. |
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*/ |
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void Pop() |
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{ |
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// @todo |
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} |
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|
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private: // New methods |
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|
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/** |
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* C++ constructor |
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* |
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* @param aAlfSendBuffer |
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*/ |
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CAlfGraphicsContext( CAlfRsSendBuffer& aAlfSendBuffer ); |
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|
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/** |
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* ConstructL |
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* |
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* Construct |
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*/ |
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void ConstructL( ); |
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|
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/** |
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* DoReset |
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* |
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* Reset all context variables to their default values |
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*/ |
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void DoReset(); |
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|
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private: |
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|
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/** |
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* locally cached context variables. |
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*/ |
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TPoint iOrigin; |
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|
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/** |
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* clipping regions are in screen coordinates |
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*/ |
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RRegionBuf<KAlfRsGcMaxClippingRects> iClippingRegion; |
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|
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TRect iClippingRect; |
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|
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TInt iFontHandle; |
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|
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TRgb iTextShadowColor; |
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|
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TBool iBrushPatternSet; |
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TInt iBrushPattern; |
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|
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TRgb iPenColor; |
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|
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TRgb iBrushColor; |
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|
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TSize iPenSize; |
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TInt iDrawMode; |
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TPoint iLinePosition; |
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|
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TBool iBrushUsed; |
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|
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TPoint iBrushOrigin; |
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TInt iBrushStyle; |
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TInt iCharJustExcess; |
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TInt iCharJustNum; |
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TInt iWordJustExcess; |
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TInt iWordJustNum; |
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TPoint iDitherOrigin; |
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TInt iDotLength; |
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TInt iDotMask; |
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TInt iDotParam; |
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TInt iDotDirection; |
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TInt iShadowMode; |
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TInt iStrikethrough; |
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TInt iUnderline; |
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TInt iUserDisplayMode; |
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TInt iPenStyle; |
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/** |
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* Not owned. |
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*/ |
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CAlfRsSendBuffer& iSendBuffer; |
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/* |
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* Increased whenever command that requires actual drawing is called. |
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*/ |
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TInt iDrawCommandCount; |
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#ifdef _OPTIMIZE_WS_COMMANDS_ADVANCED_ |
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RRegionBuf<5> iDelayedClippingRegion; |
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RRegionBuf<5> iDelayedDrawRegion; |
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enum TRollbackStates |
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{ |
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ERollbackClippingState = 1 |
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//ERollbackFontState = 2 |
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}; |
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RRegionBuf<20> iPreviousClippingRegion; |
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#endif |
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#ifdef _OPTIMIZE_WS_COMMANDS_BASIC_ |
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TInt iRollback; |
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enum TDelayedContextState |
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{ |
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EModifiedPenStyle = 1, |
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EModifiedBrushStyle = 2, |
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EModifiedPenColor = 4, |
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EModifiedBrushColor = 8, |
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EModifiedClipRect = 16, |
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EModifiedClipReset = 32, |
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EModifiedJustification = 64, |
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EModifiedBrushPattern1 = 128, |
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EModifiedBrushPattern2 = 256, |
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EModifiedSetFontNoDuplicate = 512, |
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EModifiedResetFont = 1024 |
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}; |
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TInt iPreviousPenStyle; |
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TInt iPreviousBrushStyle; |
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TRgb iPreviousPenColor; |
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TRgb iPreviousBrushColor; |
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TInt iPreviousBrushPattern; |
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TInt iPreviousFontHandle; |
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TInt32 iDelayedContextState; |
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#endif |
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}; |
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#endif /*CALFRSGC_H_*/ |