/*

* Copyright (c) 2010 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:  Recording graphics context used to cache drawing commands.

*

*/

#include <w32std.h>

#include <gdi.h>

class CFbsBitmap;

class CFbsBitGc;

class CFbsBitmapDevice;

NONSHARABLE_CLASS( CMRRecordingGc ) : public CWindowGc

    {

public:

    CMRRecordingGc( CWindowGc& aRealGc );

	~CMRRecordingGc();

public:

	/**

	 * Flush recorded drawing commands from buffer to the real

	 * graphics context.

	 * 

	 * @param aRect Target rectangle to draw

	 */

	void FlushBuffer( const TRect& aRect );

	/**

	 * Delete recorded drawing commands

	 */

    void PurgeBuffer();

public: // From CGraphicsContext

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

protected:

    // From CWindowGc

	void Activate( RDrawableWindow &aDevice );

	void Deactivate();

	// From CGraphicsContext

	CGraphicsDevice* Device() const;

	void SetDrawMode(TDrawMode aDrawingMode);

	void SetClippingRect(const TRect& aRect);

	void CancelClippingRect();

	void Reset();

	void UseFont(const CFont *aFont);

	void DiscardFont();

	void SetUnderlineStyle(TFontUnderline aUnderlineStyle);

	void SetStrikethroughStyle( TFontStrikethrough aStrikethroughStyle );

	void SetWordJustification(TInt aExcessWidth,TInt aNumGaps);

	void SetCharJustification(TInt aExcessWidth,TInt aNumChars);

	void SetPenColor(const TRgb &aColor);

	void SetPenStyle(TPenStyle aPenStyle);

	void SetPenSize(const TSize& aSize);

	void SetBrushColor(const TRgb &aColor);

	void SetBrushStyle(TBrushStyle aBrushStyle);

	void SetBrushOrigin(const TPoint &aOrigin);

	void UseBrushPattern(const CFbsBitmap *aDevice);

	void DiscardBrushPattern();

	void MoveTo(const TPoint &aPoint);

	void MoveBy(const TPoint &aPoint);

	void Plot(const TPoint &aPoint);

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

	void DrawLine(const TPoint &aPoint1,const TPoint &aPoint2);

	void DrawLineTo(const TPoint &aPoint);

	void DrawLineBy( const TPoint& aPoint );

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

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

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

	void DrawEllipse(const TRect &aRect);

	void DrawRect(const TRect &aRect);

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

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

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

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

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

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

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

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

	void DrawText(const TDesC &aBuf,const TPoint &aPos);

	void DrawText(const TDesC &aBuf,const TRect &aBox,TInt aBaselineOffset,TTextAlign aHoriz=ELeft,TInt aLeftMrg=0);

	// From CBitmapContext

	void Clear();

	void Clear(const TRect &aRect);

	void CopyRect(const TPoint &anOffset,const TRect &aRect);

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

	void BitBlt(const TPoint &aDestination, const CFbsBitmap *aBitmap, const TRect &aSource);

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

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

	void BitBlt(const TPoint &aDestination, const CWsBitmap *aBitmap, const TRect &aSource);

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

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

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

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

	//=================Extra functions specific to wserv GDI==============

	void SetDitherOrigin(const TPoint& aPoint);

	TInt SetClippingRegion(const TRegion &aRegion);

	void CancelClippingRegion();

	void SetOpaque(TBool aDrawOpaque=ETrue);

	// From CFbsBitGc

	void SetFaded(TBool aFaded);

	void SetFadingParameters(TUint8 aBlackMap,TUint8 aWhiteMap);

	TInt AlphaBlendBitmaps(const TPoint& aDestPt, const CFbsBitmap* aSrcBmp, const TRect& aSrcRect, const CFbsBitmap* aAlphaBmp, const TPoint& aAlphaPt);

	TInt AlphaBlendBitmaps(const TPoint& aDestPt, const CWsBitmap* aSrcBmp, const TRect& aSrcRect, const CWsBitmap* aAlphaBmp, const TPoint& aAlphaPt);

	TAny* Interface( TUid aInterfaceId );

    const TAny* Interface( TUid aInterfaceId ) const;

protected:  

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

private:

    /**

     * Buffer item to store drawing command and parameters

     */

    NONSHARABLE_CLASS( CBufferItem ) : public CBase

        {

        public:

        enum TCommandType

            {

            EShortText,

            ELongText,

            ESetPenColor,

            EBitBlt1,

            EBitBlt2,

            EBitBltMasked1,

            EUseFont,

            EDiscardFont,

            ESetDrawMode,

            ESetClippingRect,

            ECancelClippingRect,

            ESetBrushColor,

            ESetBrushStyle,

            EDrawRect,

            EClear,

            EDrawLine,

            ESetUnderlineStyle,

            ESetStrikethroughStyle

            };

        public:

            ~CBufferItem();

            /**

             * Translated commaned with given point

             */

            void Translate( const TPoint& aPoint );

            TInt iType;

            HBufC* iText;

            TPoint iPosition;

            TRect iBox;

            TInt iBaseLineOffset;

            //TTextAlign iHorizontal;

            TInt iLeftMargin;

            TRgb iColor;

            const CFbsBitmap* iBitmap;

            const CFbsBitmap* iMask;

            TRect iSource;

            TBool iInvertMask;

            const CFont* iFont;

            //TDrawMode iDrawMode;

            //TBrushStyle iBrushStyle;

            TRect iRect;

            TInt iValue;

        };

    CBufferItem* BufferItem();

    /// Ref: Real window GC for actual drawing

    CWindowGc& iRealGc;

    /// Own: Array of recorded drawing commands

    RPointerArray<CBufferItem> iItems;

    /// Own: Recording origin relative to real context

    TPoint iOrigin;

    };