1 // Copyright (c) 2004-2009 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 __PIXELCONSUMER_H__

    17 

    18 #define __PIXELCONSUMER_H__

    19 /** 	@file

    20 	@internalTechnology */

    21 

    22 #include "ColourDefs.h"

    23 

    24 class CFbsBitmap;

    25 

    26 inline

    27 TBool Contains(const TRect& aR, const TPoint &aPoint)

    28 	{

    29 	return !(aPoint.iX<aR.iTl.iX || aPoint.iX>=aR.iBr.iX || aPoint.iY<aR.iTl.iY || aPoint.iY>=aR.iBr.iY);

    30 	}

    31 

    32 /*

    33 #define used to improve readability of the code where it is used.

    34 

    35 @see CRgbPixelConsumer::SetRGBPixel

    36 @see CRgbPixelConsumer::SetRGBAPixel

    37 */

    38 #define CALL_SETPIXEL_FUNCTION(pixelConsumer, ptrToSetPixelFn)	((pixelConsumer).*(ptrToSetPixelFn))

    39 

    40 class CPixelConsumerBase: public CBase 

    41 	{

    42 public:

    43 

    44 	~CPixelConsumerBase();

    45 	void InitL(const TSize& aFrameSize);

    46 	inline void SetPos(const TPoint& aPosition);

    47 	void Prepare();

    48 	void GetBitmap(CFbsBitmap& aBitmap, const TRect& aSourceRect);

    49 	inline const TRect& ClippingRect() const;

    50 	void SetClippingRect(const TRect& aRect);

    51 	inline void SetOrigin(const TPoint& aOrigin);

    52 	inline TBool Enabled() const;

    53 	inline void SetEnabled(TBool aEnabled);

    54 	void Clear(TUint aColour, const TRect& aRect);

    55 	inline void SetAlphaEnabledBitmap(TBool aEnabled);

    56 	void ClearAlpha(TUint aColour, const TRect& aRect);

    57 	inline TInt PixelSize() const;

    58 	

    59 protected:

    60 	inline CPixelConsumerBase(TInt aPixelSize);

    61 	inline void GetBuffer();

    62 

    63 protected:

    64 	TInt		iPixelSize;

    65 	TUint8*		iFrameBuffer;

    66 	TInt		iFrameBufferSize;

    67 	TSize		iFrameSize;

    68 	TRect		iClippingRect;

    69 	TRect		iRealOutputRect;

    70 	TRect		iImageRect;

    71 	TPoint		iCurrentPos;

    72 	TPoint		iOrigin;

    73 	TBool		iAlphaEnabled;

    74 private:

    75 	TBool		iNeedBufferFlush;

    76 	TBool		iEnabled;

    77 	};

    78 

    79 class CAlphaPixelConsumer;

    80 class CRgbPixelConsumer:public CPixelConsumerBase

    81 	{

    82 public:

    83 	typedef void (CRgbPixelConsumer::*SetPixelFunc)(TRgbaColour aPixelColour);

    84 	inline CRgbPixelConsumer(TInt aPixelSize);

    85 	void SetRGBPixel(TRgbaColour aPixelColour);

    86 	void SetRGBAPixel(TRgbaColour aPixelColour);

    87 	TUint GetPixel(const TPoint& aPosition) const;

    88 	inline void SetAlphaConsumer(CAlphaPixelConsumer* aAlphaConsumer);

    89 protected:

    90 	inline TUint GetPixel(const TUint8* aPtr) const;

    91 	

    92 protected:	

    93 	CAlphaPixelConsumer* iAlphaConsumer;

    94 	};

    95 

    96 class CAlphaPixelConsumer:public CPixelConsumerBase

    97 	{

    98 public:

    99 	inline CAlphaPixelConsumer();

   100 	void SetPixel(TRgbaColour aPixelAlpha);

   101 	inline void SetPixelByBufferOffset(TInt aOffset, TRgbaColour aPixelAlpha);

   102 	inline void FillBy(TUint aAlpha);

   103 	inline TUint GetPixel(const TPoint& aPosition) const;

   104 	inline TUint GetPixel(TInt aBufferOffset) const;

   105 	};

   106 

   107 #include "PixelConsumer.inl"

   108 

   109 #endif // __PIXELCONSUMER_H__