sl@0: // Copyright (c) 2006-2009 Nokia Corporation and/or its subsidiary(-ies).
sl@0: // All rights reserved.
sl@0: // This component and the accompanying materials are made available
sl@0: // under the terms of "Eclipse Public License v1.0"
sl@0: // which accompanies this distribution, and is available
sl@0: // at the URL "http://www.eclipse.org/legal/epl-v10.html".
sl@0: //
sl@0: // Initial Contributors:
sl@0: // Nokia Corporation - initial contribution.
sl@0: //
sl@0: // Contributors:
sl@0: //
sl@0: // Description:
sl@0: // CWsGc and associated classes definitions
sl@0: // 
sl@0: //
sl@0: 
sl@0: #ifndef __GC_H__
sl@0: #define __GC_H__
sl@0: 
sl@0: #include "wnredraw.h"
sl@0: #include "cliwin.h"
sl@0: #include "graphicscontextstate.h"
sl@0: 
sl@0: class CWsFbsFont;
sl@0: 
sl@0: class CWsGc : public CWsObject
sl@0: 	{
sl@0: 	enum {ETextPtrBufLen=0x100};	// Buffer of TText, used on stack
sl@0: // Functions
sl@0: public:
sl@0: 	static CWsGc* NewL(CWsClient *aOwner);
sl@0: 	~CWsGc();
sl@0: 	static void InitStaticsL();
sl@0: 	static void DeleteStatics();
sl@0: 	void CommandL(TInt aOpcode, const TAny *aCmdData);
sl@0: 	void Deactivate();
sl@0: 	inline void SetNextWinGc(CWsGc *aGc);
sl@0: 	inline CWsGc *NextWinGc() const;
sl@0: 	TInt ExternalizeL(CBufBase& aBuffer, TInt aStartPos);
sl@0: 	TInt ExternalizeClippingRegionL(RWriteStream& aWriteStreem);
sl@0: 	TInt FbsBitmapHandle(TInt aOpcode, const TWsGcCmdUnion &pData, TInt& aMaskHandle);
sl@0: 	TInt WsBitmapHandle(TInt aOpcode, const TWsGcCmdUnion &pData, TInt& aMaskHandle);
sl@0: 	TInt WsDrawableSourceHandle(TInt aOpcode, const TWsGcCmdUnion &aData);
sl@0: 	void Reactivate();
sl@0: private:
sl@0: 	CWsGc(CWsClient *aOwner);
sl@0: 	void ConstructL();
sl@0: 	void Activate(CWsClientWindow *win);
sl@0: 	void DoDrawing2(TWsGcOpcodes aOpcode, const TWsGcCmdUnion &pData);
sl@0: 	void SetGcAttribute(TInt aOpcode, TWsGcCmdUnion pData);
sl@0: 	void SetOrigin(const TPoint &aOrigin);
sl@0: 
sl@0: 	void DoDrawing0L(TWsGcOpcodes aOpcode, const TWsGcCmdUnion &pData);
sl@0: 	void DoDrawing1(TWsGcOpcodes aOpcode, const TWsGcCmdUnion &pData);
sl@0: 	void Activate(const TInt &aHandle);
sl@0: 	void DoDrawCommand(TWsGcOpcodes aOpcode, const TWsGcCmdUnion &pData);
sl@0: 	void SetClippingRegionL(TInt aCountRegion);
sl@0: 	void SetClippingRect(const TRect &aRect);
sl@0: 	void CancelClippingRegion();
sl@0: 	void DoDrawPolygon(const TWsGcCmdDrawPolygon *aDrawPolygon);
sl@0: 	void DoDrawPolyLine(const TWsGcCmdDrawPolyLine *aDrawPolyLine, TBool aContinued);
sl@0: 	void GcOwnerPanic(TClientPanic aPanic);
sl@0: 	void ResetClippingRect();
sl@0: 	void EndSegmentedPolygon();
sl@0: 	void StartSegmentedDrawPolygonL(const TWsGcCmdStartSegmentedDrawPolygon* aDrawPolygon);
sl@0: 	void SegmentedDrawPolygonData(const TWsGcCmdSegmentedDrawPolygonData* aDrawPolygon);
sl@0: 	void UpdateJustification(TText* aText,TInt aLen);
sl@0: 	void UpdateJustification(TText* aText,TInt aLen,CGraphicsContext::TTextParameters* aParam);
sl@0: #if defined(_DEBUG)
sl@0: 	inline TBool IsPolyPointData() {return(iPolyPointListSize>0 || iPolyPoints!=NULL);}
sl@0: #endif
sl@0: 	void ExternalizeAlphaValueL(RWriteStream& aWriteStream);
sl@0: 	TPtrC BufferTPtr(TText* aStart,TInt aLen);
sl@0: 	void CheckPolyData(const TAny* aDataPtr, TInt aHeaderSize, TInt aNumPoints);
sl@0: // Data
sl@0: private:
sl@0: 	CFbsBitGc *iBackedUpWinGc;
sl@0: 	CWsClientWindow *iWin;
sl@0: 	CWsGc *iNextWinGc;
sl@0: 	CWsFbsFont *iFont;
sl@0: 	RWsRegion* iUserDefinedClippingRegion; //Clipping region that is set explicitly by the user.
sl@0: 	TRect iClippingRect;	// All drawing clipped to this rectangle in addition to other clipping
sl@0: 	TBool iClippingRectSet;	// ETrue if the iClippingRect is in use
sl@0: 	TPoint iOrigin;			// User defined origin, relative to the top left of the window
sl@0: 	TPoint iLinePos;		// Current line position for LineBy, LineTo etc
sl@0: 	TPoint *iPolyPoints;
sl@0: 	TInt iPolyPointListSize;
sl@0: 	//member used for storing graphics context data for Internalize/Externalize
sl@0: 	TInternalGcStatus iInternalStatus;
sl@0: 	// static variables
sl@0: 	static CFbsBitmap *iScratchBitmap;
sl@0: 	static CFbsBitmap *iScratchMaskBitmap;
sl@0: 	};
sl@0: 
sl@0: inline void CWsGc::SetNextWinGc(CWsGc *aGc)
sl@0: 	{
sl@0: 	iNextWinGc=aGc;
sl@0: 	}
sl@0: 
sl@0: inline CWsGc *CWsGc::NextWinGc() const
sl@0: 	{
sl@0: 	return(iNextWinGc);
sl@0: 	}
sl@0: 
sl@0: #endif