// Copyright (c) 2008-2009 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 ICOMASKPROCESSOR_H

#define ICOMASKPROCESSOR_H

#include <icl/imageprocessor.h>

/**

Image Processor specific to the ICO decoder when decoding to a 16MA destination bitmap.

This class applies the alpha channel

*/

class CIcoMaskProcessor : public CImageProcessor

	{

public:

	static CIcoMaskProcessor* NewL(TInt aReductionFactor);

	~CIcoMaskProcessor();

	// From CImageProcessor

	void PrepareL(CFbsBitmap& aBitmap,const TRect& aImageRect);

	void PrepareL(CFbsBitmap& aBitmap,const TRect& aImageRect,const TSize& aRgbBlockSize);

	void SetYPosIncrement(TInt aYInc);

	void SetLineRepeat(TInt aLineRepeat);

	void SetPixelPadding(TInt aNumberOfPixels);

	TBool SetPixel(TRgb aColor);

	TBool SetPixelRun(TRgb aColor,TInt aCount);

	TBool SetPixels(TRgb* aColorBuffer,TInt aBufferLength);

	TBool SetPixelBlock(TRgb* aColorBuffer);

	TBool SetMonoPixel(TInt aGray256);

	TBool SetMonoPixelRun(TInt aGray256,TInt aCount);

	TBool SetMonoPixels(TUint32* aGray256Buffer,TInt aBufferLength);

	TBool SetMonoPixelBlock(TUint32* aGray256Buffer);

	TBool SetPos(const TPoint& aPosition);

	TBool FlushPixels();

private:

	CIcoMaskProcessor(TInt aReductionFactor);

	void Reset();

	void ProcessScaledPixels();

	TBool DoFlushPixels();

private:

	class TMonochromeSum

		{

	public:

		TInt iLevel;

		TInt iCount;

		};

private:

	TInt iReductionFactor;

	CFbsBitmap* iDestBitmap; // not owned

	TRect iImageRegion;

	TPoint iPosition;

	TPoint iScaledPosition;

	TInt iYIncrement;

	TInt iPixelPadding;

	TInt iPixelsToSkip;

	TRgb* iMaskBuffer;

	TRgb* iMaskBufferPtr;

	TRgb* iMaskBufferPtrLimit;

	// For scaling

	TMonochromeSum* iScaledMaskBuffer;

	TMonochromeSum* iScaledMaskBufferPtrLimit;

	};

#endif // ICOMASKPROCESSOR_H