javauis/lcdui_akn/javalcdui/src.nokialcdui/TMID444Format.cpp
author Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
Mon, 21 Jun 2010 15:32:50 +0300
branchRCL_3
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permissions -rw-r--r--
Revision: v2.1.30 Kit: 2010125
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/*
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* Copyright (c) 2006-2007 Nokia Corporation and/or its subsidiary(-ies).
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* All rights reserved.
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* This component and the accompanying materials are made available
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* under the terms of "Eclipse Public License v1.0"
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* which accompanies this distribution, and is available
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* at the URL "http://www.eclipse.org/legal/epl-v10.html".
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*
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* Initial Contributors:
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* Nokia Corporation - initial contribution.
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*
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* Contributors:
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*
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* Description:  4 bits for red, green and blue component in a pixel.
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*
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*/
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//  INCLUDE FILES
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#include "TMID444Format.h"
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inline TUint16 ConvertInternalInline444(const TMIDInternalARGB& aInternal)
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{
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    // no transparency, so alpha is 0
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    return (TUint16)(((aInternal.iR & KFourLeftBits) << KMIDShift4Bits) +
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                     (aInternal.iG & KFourLeftBits) +
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                     ((aInternal.iB & KFourLeftBits) >> KMIDShift4Bits));
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}
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inline void ConvertInline444(TMIDInternalARGB& aResult, TUint32 aColor)
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{
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    aResult.iA = KAlphaFullOpaque;
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    aResult.iR = KNativeColors[(aColor & K444RMax) >> KMIDShift8Bits ];
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    aResult.iG = KNativeColors[(aColor & K444GMax) >> KMIDShift4Bits ];
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    aResult.iB = KNativeColors[(aColor & K444BMax)];
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}
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void TMID444Format::InitializeL(const TMIDBitmapParameters& aParameters)
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{
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    TMIDFormatConverter::InitializeL(aParameters);
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    iOffset += iTransformer.iPoint.iX + iTransformer.iPoint.iY * iScanlength;
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    iBitmap = (TUint16*)aParameters.iPixels;
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}
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TUint32 TMID444Format::ConvertInternal(const TMIDInternalARGB& aInternal)
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{
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    return ConvertInternalInline444(aInternal);
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}
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void TMID444Format::Convert(TMIDInternalARGB& aResult, TUint32 aColor) const
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{
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    ConvertInline444(aResult, aColor);
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}
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void TMID444Format::GetPixel(TMIDInternalARGB& aResult) const
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{
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    ConvertInline444(aResult, iBitmap[ iOffset ]);    // CSI: 2 Wrong index means implementation error #
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}
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TUint8 TMID444Format::GetAlpha() const
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{
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    // we need only last 8 bits since it is either white or black
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    return (TUint8)(((TUint16*)iAlphaBitmap)[ iOffset ] & KMIDEightRightBits);   // CSI: 2 Wrong index means implementation error #
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}
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void TMID444Format::PlotPixel(const TMIDInternalARGB& aInternal)
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{
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    iBitmap[ iOffset ] = ConvertInternalInline444(aInternal);    // CSI: 2 Wrong index means implementation error #
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}
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TBool TMID444Format::CheckSize(TInt aPixelSize, TInt aLastDrawnPixelOffset)
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{
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    return((aLastDrawnPixelOffset * KBytesInPixel444) <= aPixelSize);
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}
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