1 // Copyright (c) 2008-2009 Nokia Corporation and/or its subsidiary(-ies).

     2 // All rights reserved.

     3 // This component and the accompanying materials are made available

     4 // under the terms of "Eclipse Public License v1.0"

     5 // which accompanies this distribution, and is available

     6 // at the URL "http://www.eclipse.org/legal/epl-v10.html".

     7 //

     8 // Initial Contributors:

     9 // Nokia Corporation - initial contribution.

    10 //

    11 // Contributors:

    12 //

    13 // Description:

    14 //

    15 

    16 #ifndef ICOMASKPROCESSOR_H

    17 #define ICOMASKPROCESSOR_H

    18 

    19 #include <icl/imageprocessor.h>

    20 

    21 /**

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

    23 This class applies the alpha channel

    24 */

    25 class CIcoMaskProcessor : public CImageProcessor

    26 	{

    27 public:

    28 	static CIcoMaskProcessor* NewL(TInt aReductionFactor);

    29 	~CIcoMaskProcessor();

    30 	

    31 	// From CImageProcessor

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

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

    34 	void SetYPosIncrement(TInt aYInc);

    35 	void SetLineRepeat(TInt aLineRepeat);

    36 	void SetPixelPadding(TInt aNumberOfPixels);

    37 	TBool SetPixel(TRgb aColor);

    38 	TBool SetPixelRun(TRgb aColor,TInt aCount);

    39 	TBool SetPixels(TRgb* aColorBuffer,TInt aBufferLength);

    40 	TBool SetPixelBlock(TRgb* aColorBuffer);

    41 	TBool SetMonoPixel(TInt aGray256);

    42 	TBool SetMonoPixelRun(TInt aGray256,TInt aCount);

    43 	TBool SetMonoPixels(TUint32* aGray256Buffer,TInt aBufferLength);

    44 	TBool SetMonoPixelBlock(TUint32* aGray256Buffer);

    45 	TBool SetPos(const TPoint& aPosition);

    46 	TBool FlushPixels();

    47 

    48 private:

    49 	CIcoMaskProcessor(TInt aReductionFactor);

    50 	void Reset();

    51 	void ProcessScaledPixels();

    52 	TBool DoFlushPixels();

    53 

    54 private:

    55 	class TMonochromeSum

    56 		{

    57 	public:

    58 		TInt iLevel;

    59 		TInt iCount;

    60 		};

    61 

    62 private:

    63 	TInt iReductionFactor;

    64 	CFbsBitmap* iDestBitmap; // not owned

    65 	TRect iImageRegion;

    66 	TPoint iPosition;

    67 	TPoint iScaledPosition;

    68 	TInt iYIncrement;

    69 	TInt iPixelPadding;

    70 	TInt iPixelsToSkip;

    71 	

    72 	TRgb* iMaskBuffer;

    73 	TRgb* iMaskBufferPtr;

    74 	TRgb* iMaskBufferPtrLimit;

    75 	

    76 	// For scaling

    77 	TMonochromeSum* iScaledMaskBuffer;

    78 	TMonochromeSum* iScaledMaskBufferPtrLimit;

    79 	};

    80 

    81 #endif // ICOMASKPROCESSOR_H

    82