diff -r 000000000000 -r 5d03bc08d59c graphicsdeviceinterface/screendriver/sbit/BMDRAW4M.CPP --- /dev/null Thu Jan 01 00:00:00 1970 +0000 +++ b/graphicsdeviceinterface/screendriver/sbit/BMDRAW4M.CPP Tue Feb 02 01:47:50 2010 +0200 @@ -0,0 +1,1407 @@ +// Copyright (c) 1997-2009 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: +// + +#include "BMDRAW.H" + +GLREF_D const TUint8 ditherlutab[16][4]; +GLREF_D const TUint8 shadowlutab[256]; + +const TInt KPixelsPerWord = 8; +const TInt KPixelsPerByte = 2; +const TInt KBitsPerPixel = 4; + +// CDrawFourBppBitmapGray + +//Initializes iSize, iDrawRect, iLongWidth, iScanlineWords data members. +//It should be called every time when iSize is going to be changed - from Construct(). +//@param aSize Physical screen size in pixels. +//@panic EScreenDriverPanicInvalidSize - Invalid aSize parameter. This might happen if the +//device is scaled and the scaling origin goes outside physical drawing rectangle. +void CDrawFourBppBitmapGray::SetSize(const TSize& aSize) + { + CDrawBitmap::SetSize(aSize); + __ASSERT_DEBUG(iSize == aSize, User::Invariant()); + iLongWidth = (iSize.iWidth + (KPixelsPerWord - 1)) & ~(KPixelsPerWord - 1); + iScanLineWords = iLongWidth / KPixelsPerWord; + } + +TInt CDrawFourBppBitmapGray::Construct(TSize aSize) + { + return Construct(aSize, ((aSize.iWidth + (KPixelsPerWord - 1)) & ~(KPixelsPerWord - 1)) / KPixelsPerByte); + } + +TInt CDrawFourBppBitmapGray::Construct(TSize aSize, TInt aStride) + { + iBits = NULL; + iDispMode = EGray16; + CDrawBitmap::SetSize(aSize); + __ASSERT_DEBUG(iSize == aSize, User::Invariant()); + if (aStride & 3) + return KErrArgument; + iLongWidth = aStride * KPixelsPerByte; + if (iLongWidth < aSize.iWidth) + return KErrArgument; + iScanLineWords = aStride >> 2; + TInt size = 1 + (Max(aSize.iWidth,aSize.iHeight) >> 1); + if(size < 0) + return KErrArgument; + iScanLineBuffer = (TUint32*)(User::Heap().Alloc(size)); + if (iScanLineBuffer == NULL) + return KErrNoMemory; + return KErrNone; + } + +void CDrawFourBppBitmapGray::Shadow(TRgb& aColor) + { + aColor = TRgb::_Gray16(ShadowAndFadeGray16(aColor._Gray16())); + } + +TUint8 CDrawFourBppBitmapGray::ShadowAndFadeGray16(TInt aGray16) + { + if (iShadowMode & EFade) + aGray16 = FadeGray(aGray16 * 17) >> 4; + + if (iShadowMode & EShadow) + aGray16 = Max(aGray16 - 5,0); + + return (TUint8)aGray16; + } + +TUint32 CDrawFourBppBitmapGray::FadeWord(TUint32 aWord) + { + TUint32 fadedWord = 0; + + for (TInt bitShift = 0; bitShift < 32; bitShift += 4) + { + TInt gray = (aWord >> bitShift) & 0xf; + gray = FadeGray(gray * 17) >> 4; + fadedWord |= gray << bitShift; + } + + return fadedWord; + } + +TUint32 CDrawFourBppBitmapGray::ColorInt(TRgb aColor) const + { + TUint32 colorWord = aColor._Gray16(); + + colorWord |= colorWord << 4; + colorWord |= colorWord << 8; + colorWord |= colorWord << 16; + + return colorWord; + } + +void CDrawFourBppBitmapGray::DitherBuffer(TInt aX,TInt aY,TInt aLength,TUint32* aBuffer) + { + aX += iDitherOrigin.iX; + aY += iDitherOrigin.iY; + aX &= 1; + aY &= 1; + aY <<= 1; + + const TInt first = aX + aY; + aX ^= 1; + const TInt second = aX + aY; + + TUint8* bufferPtr = (TUint8*)aBuffer; + const TUint8* bufferLimit = bufferPtr + ((aLength + 1) / 2); + + for (; bufferPtr < bufferLimit; bufferPtr++) + { + TUint8 index1 = bufferPtr[0]; + TUint8 index2 = TUint8(index1 >> 4); + index1 &= 0xf; + + const TUint8 value1 = ditherlutab[index1][first]; + const TUint8 value2 = ditherlutab[index2][second]; + bufferPtr[0] = TUint8(value1 | (value2 << 4)); + } + } + +TUint32 CDrawFourBppBitmapGray::HashInt(TRgb aColor,TInt aX,TInt aY) const + { + const TUint32 gray = aColor._Gray16(); + const TUint32 int1 = Hash(gray,aX,aY); + const TUint32 int2 = Hash(gray,aX + 1,aY); + + TUint32 colorWord = int1 | (int2 << 4); + + colorWord |= colorWord << 8; + colorWord |= colorWord << 16; + + return colorWord; + } + +void CDrawFourBppBitmapGray::InvertBuffer(TInt aLength,TUint32* aBuffer) + { + const TUint32* bufferLimit = aBuffer + ((aLength + KPixelsPerWord - 1) / KPixelsPerWord); + + while (aBuffer < bufferLimit) + *aBuffer++ ^= 0xffffffff; + } + +/** Copies a number of pixels into a word-aligned buffer without format translation. + Note that the byte length to the target buffer is honoured, + but the end contents of the last byte are generally overwritten with extra pixel data (or garbage). + Note that I am assuming the compiler optimiser will convert all these divides and multiplies into shifts! +@param aX x coordinate to start copy from (need not be aligned at all) +@param aY y coordinate to copy line from +@param aLength number of pixels to copy +@param aBuffer target word-aligned buffer (but may or may not be word length) + **/ +void CDrawFourBppBitmapGray::ReadLine(TInt aX,TInt aY,TInt aLength,TAny* aBuffer) const + { + TUint32* pixelPtr = ScanLine(aY); + TInt startLongPix = aX & -KPixelsPerWord; + pixelPtr += startLongPix / KPixelsPerWord; + TUint32* bufferPtr = (TUint32*)aBuffer; + TInt wordsCnt = (aLength+KPixelsPerByte-1) / KPixelsPerWord; //how many words to write to target + TInt restPixels = aLength - wordsCnt * KPixelsPerWord; //how many pixels left to copy + TInt bytesCnt = (restPixels+KPixelsPerByte-1) / KPixelsPerByte ; //how many target bytes to copy + TInt shiftBits = aX - startLongPix; + restPixels=shiftBits+restPixels; //How many pixels are read from the second word by the final word copy + if (bytesCnt==0 && shiftBits && restPixels<=0) + { + // This correction is required because although a last whole word will be written to the target buffer, + // this special test indicates that the required significant data bits plus the shift + // add up to one word (or less) to be read. + // The copy words optimisation used to copy the main body of the line + // will read from the next location after the copy, + // but this may not always be accessable memory (on the last scanline) + // The correction is not required if the second word would need to be read anyway. + //eg we want to copy 7 nibbles with a 1 nibble shift (16 color), restpixels would be 0 + bytesCnt=4; + wordsCnt--; + } + //How many pixels are read from the second word in the final byte copy? + //If zero (or less) then the second word should not be read in the copy bytes phase + //really this should be an else of the if above, but this gives the same end condition. + //eg we want to copy 5 nibbles with a 2 nibble shift (16 color), restpixels would be -1. + restPixels-=KPixelsPerWord; + ReadLineCommon(pixelPtr,bufferPtr,wordsCnt,restPixels,bytesCnt,shiftBits*KBitsPerPixel); + } + + +TRgb CDrawFourBppBitmapGray::ReadRgbNormal(TInt aX,TInt aY) const + { + TUint32 colorWord = *(ScanLine(aY) + (aX / KPixelsPerWord)); + colorWord >>= ((aX & 7) * KBitsPerPixel); + return TRgb::_Gray16(colorWord & 0xf); + } + +void CDrawFourBppBitmapGray::ShadowArea(const TRect& aRect) + { + __ASSERT_DEBUG(aRect.iTl.iX>=0 && aRect.iBr.iX<=iSize.iWidth,Panic(EScreenDriverPanicOutOfBounds)); + __ASSERT_DEBUG(aRect.iTl.iY>=0 && aRect.iBr.iY<=iSize.iHeight,Panic(EScreenDriverPanicOutOfBounds)); + + TInt startLong = (aRect.iTl.iX + KPixelsPerWord - 1) & ~7; + TInt finishLong = aRect.iBr.iX & ~7; + TInt startShift = (startLong - aRect.iTl.iX) * KBitsPerPixel; + TInt finishShift = (KPixelsPerWord - aRect.iBr.iX + finishLong) * KBitsPerPixel; + TInt startLongAdjust = startLong / KPixelsPerWord; + TInt finishLongAdjust = finishLong / KPixelsPerWord; + TUint32* base = ScanLine(aRect.iTl.iY); + + if (iShadowMode & EFade) + { + TUint32* pixelPtr = base + startLongAdjust; + TUint32* pixelPtrLimit = base + finishLongAdjust; + + if (finishLong < startLong) + { + const TUint32 mask = (0xffffffff >> finishShift) & (0xffffffff << (32 - startShift)); + const TUint32 invertedMask = ~mask; + + for (TInt y = aRect.iTl.iY; y < aRect.iBr.iY; y++) + { + TUint32 shadowed = FadeWord(pixelPtrLimit[0]) & mask; + pixelPtrLimit[0] &= invertedMask; + pixelPtrLimit[0] |= shadowed; + pixelPtrLimit += iScanLineWords; + } + } + else + { + for (TInt y = aRect.iTl.iY; y < aRect.iBr.iY; y++) + { + if (aRect.iTl.iX < startLong) + { + TUint32 shadowed = FadeWord(pixelPtr[-1]); + pixelPtr[-1] = PasteInt(pixelPtr[-1],shadowed,startShift); + } + + for (TUint32* tempPixelPtr = pixelPtr; tempPixelPtr < pixelPtrLimit; tempPixelPtr++) + tempPixelPtr[0] = FadeWord(tempPixelPtr[0]); + + if (finishLong < aRect.iBr.iX) + { + TUint32 shadowed = FadeWord(pixelPtrLimit[0]); + pixelPtrLimit[0] = PasteInt(shadowed,pixelPtrLimit[0],finishShift); + } + + pixelPtr += iScanLineWords; + pixelPtrLimit += iScanLineWords; + } + } + } + + if (iShadowMode & EShadow) + { + if (iUserDispMode == EGray2) + { + WriteRgbMulti(aRect.iTl.iX,aRect.iTl.iY,aRect.Width(),aRect.Height(),KRgbBlack); + return; + } + + TUint32* pixelPtr = base + startLongAdjust; + TUint32* pixelPtrLimit = base + finishLongAdjust; + + if (finishLong < startLong) + { + const TUint32 mask = (0xffffffff >> finishShift) & (0xffffffff << (32 - startShift)); + const TUint32 invertedMask = ~mask; + + for (TInt y = aRect.iTl.iY; y < aRect.iBr.iY; y++) + { + TUint32 shadowed = shadowlutab[pixelPtrLimit[0] & 0xff]; + shadowed |= (shadowlutab[(pixelPtrLimit[0] >> 8) & 0xff] << 8); + shadowed |= (shadowlutab[(pixelPtrLimit[0] >> 16) & 0xff] << 16); + shadowed |= (shadowlutab[(pixelPtrLimit[0] >> 24) & 0xff] << 24); + + pixelPtrLimit[0] &= invertedMask; + pixelPtrLimit[0] |= (shadowed & mask); + pixelPtrLimit += iScanLineWords; + } + } + else + { + for (TInt y = aRect.iTl.iY; y < aRect.iBr.iY; y++) + { + if (aRect.iTl.iX < startLong) + { + TUint32 shadowed = shadowlutab[pixelPtr[-1] & 0xff]; + shadowed |= (shadowlutab[(pixelPtr[-1] >> 8) & 0xff] << 8); + shadowed |= (shadowlutab[(pixelPtr[-1] >> 16) & 0xff] << 16); + shadowed |= (shadowlutab[(pixelPtr[-1] >> 24) & 0xff] << 24); + pixelPtr[-1] = PasteInt(pixelPtr[-1],shadowed,startShift); + } + + for (TUint32* tempPixelPtr = pixelPtr; tempPixelPtr < pixelPtrLimit; tempPixelPtr++) + { + TUint32 shadowed = shadowlutab[tempPixelPtr[0] & 0xff]; + shadowed |= (shadowlutab[(tempPixelPtr[0] >> 8) & 0xff] << 8); + shadowed |= (shadowlutab[(tempPixelPtr[0] >> 16) & 0xff] << 16); + shadowed |= (shadowlutab[(tempPixelPtr[0] >> 24) & 0xff] << 24); + tempPixelPtr[0] = shadowed; + } + + if (finishLong < aRect.iBr.iX) + { + TUint32 shadowed = shadowlutab[pixelPtrLimit[0] & 0xff]; + shadowed |= (shadowlutab[(pixelPtrLimit[0] >> 8) & 0xff] << 8); + shadowed |= (shadowlutab[(pixelPtrLimit[0] >> 16) & 0xff] << 16); + shadowed |= (shadowlutab[(pixelPtrLimit[0] >> 24) & 0xff] << 24); + pixelPtrLimit[0] = PasteInt(shadowed,pixelPtrLimit[0],finishShift); + } + + pixelPtr += iScanLineWords; + pixelPtrLimit += iScanLineWords; + } + } + } + } + +void CDrawFourBppBitmapGray::ShadeBuffer(TInt aLength,TUint32* aBuffer) + { + __ASSERT_DEBUG(aBuffer != NULL,Panic(EScreenDriverPanicInvalidParameter)); + + const TUint32* bufferLimit = aBuffer + ((aLength + KPixelsPerWord - 1) / KPixelsPerWord); + + while (aBuffer < bufferLimit) + { + TUint32 fourthbit = (0x88888888 & aBuffer[0]); + aBuffer[0] = fourthbit | (fourthbit >> 1); + aBuffer[0] |= aBuffer[0] >> 2; + aBuffer++; + } + } + +void CDrawFourBppBitmapGray::ShadowBuffer(TInt aLength,TUint32* aBuffer) + { + __ASSERT_DEBUG(aBuffer != NULL,Panic(EScreenDriverPanicInvalidParameter)); + + const TUint32* bufferLimit = aBuffer + ((aLength + KPixelsPerWord - 1) / KPixelsPerWord); + + if (iShadowMode & EFade) + { + for (TUint32* bufferPtr = aBuffer; bufferPtr < bufferLimit; bufferPtr++) + bufferPtr[0] = FadeWord(bufferPtr[0]); + } + + if (iShadowMode & EShadow) + { + for (TUint32* bufferPtr = aBuffer; bufferPtr < bufferLimit; bufferPtr++) + { + TUint32 bufferWord = bufferPtr[0]; + + TUint firstbyte = shadowlutab[bufferWord & 0xff]; + bufferWord >>= 8; + firstbyte |= (shadowlutab[bufferWord & 0xff] << 8); + bufferWord >>= 8; + firstbyte |= (shadowlutab[bufferWord & 0xff] << 16); + bufferWord >>= 8; + firstbyte |= (shadowlutab[bufferWord & 0xff] << 24); + + bufferPtr[0] = firstbyte; + } + } + } + +void CDrawFourBppBitmapGray::WriteRgb(TInt aX,TInt aY,TRgb aColor) + { + TUint32 colorIndex = aColor._Gray16(); + + if (iUserDispMode == EGray2) + colorIndex = (colorIndex > 7) ? 15 : 0; + else if (iUserDispMode == EGray4) + colorIndex = Hash(colorIndex,aX,aY); + + TUint32* pixelPtr = ScanLine(aY) + (aX / KPixelsPerWord); + TInt shift = (aX & 7) * KBitsPerPixel; + + pixelPtr[0] &= ~(0xf << shift); + pixelPtr[0] |= colorIndex << shift; + } + +void CDrawFourBppBitmapGray::WriteBinary(TInt aX,TInt aY,TUint32* aData,TInt aLength,TInt aHeight,TRgb aColor) + { + TUint32 color1 = 0; + TUint32 color2 = 0; + const TInt yLimit = aY + aHeight; + const TUint32 gray16 = aColor._Gray16(); + + if (iUserDispMode == EGray2) + { + if (gray16 > 7) + { + color1 = 15; + color2 = 15; + } + } + else if (iUserDispMode != EGray4) + { + color1 = gray16; + color2 = gray16; + } + + for (; aY < yLimit; aY++,aData++) + { + if (iUserDispMode == EGray4) + { + color1 = Hash(gray16,aX,aY); + color2 = Hash(gray16,aX + 1,aY); + } + + TUint32 color = color1; + TUint32 dataMask = 1; + const TInt xLimit = aX + aLength; + TUint8* pixelPtr = ((TUint8*)ScanLine(aY)) + (aX / 2); + + if (color1 || color2) + { + for (TInt x = aX; x < xLimit; x++,dataMask <<= 1) + { + if (aData[0] & dataMask) + { + if(x & 1) + pixelPtr[0] = (TUint8)(color << 4 | (pixelPtr[0] & 0x0f)); + else + pixelPtr[0] = (TUint8)(color | (pixelPtr[0] & 0xf0)); + } + + color = (color == color2) ? color1 : color2; + if (x & 1) + pixelPtr++; + } + } + else + { + TUint8 bytemask = TUint8((aX & 1) ? 0x0f : 0xf0); + + for (TInt x = aX; x < xLimit; x++,dataMask <<= 1,bytemask = (TUint8)~bytemask) + { + if (aData[0] & dataMask) + pixelPtr[0] &= bytemask; + + if (x & 1) + pixelPtr++; + } + } + } + } + +void CDrawFourBppBitmapGray::WriteBinaryOp(TInt aX,TInt aY,TUint32* aData,TInt aLength,TInt aHeight,TRgb aColor,CGraphicsContext::TDrawMode aDrawMode) + { + TUint32 color1 = 0; + TUint32 color2 = 0; + const TUint32 gray16 = aColor._Gray16(); + const TInt yLimit = aY + aHeight; + + if (iUserDispMode == EGray2) + { + if (gray16 > 7) + { + color1 = 15; + color2 = 15; + } + } + else if(iUserDispMode != EGray4) + { + color1 = gray16; + color2 = gray16; + } + + for (; aY < yLimit; aY++) + { + if (iUserDispMode == EGray4) + { + color1 = Hash(gray16,aX,aY); + color2 = Hash(gray16,aX + 1,aY); + } + + TUint32 color = color1; + TUint32 dataMask = 1; + const TInt xLimit = aX + aLength; + TUint8* pixelPtr = ((TUint8*)ScanLine(aY)) + (aX / 2); + + if(color1 || color2) + { + for (TInt x = aX; x < xLimit; x++,dataMask <<= 1) + { + if (aData[0] & dataMask) + { + if (x & 1) + { + if (aDrawMode == CGraphicsContext::EDrawModeXOR) + pixelPtr[0] = (TUint8)((color << 4) ^ pixelPtr[0]); + else if (aDrawMode == CGraphicsContext::EDrawModeAND) + pixelPtr[0] = (TUint8)(((color << 4) | 0x0f) & pixelPtr[0]); + else if (aDrawMode==CGraphicsContext::EDrawModeOR) + pixelPtr[0] = (TUint8)((color << 4) | pixelPtr[0]); + } + else + { + if (aDrawMode == CGraphicsContext::EDrawModeXOR) + pixelPtr[0] = (TUint8)(color ^ pixelPtr[0]); + else if (aDrawMode == CGraphicsContext::EDrawModeAND) + pixelPtr[0] = (TUint8)((color | 0xf0) & pixelPtr[0]); + else if (aDrawMode==CGraphicsContext::EDrawModeOR) + pixelPtr[0] = (TUint8)(color | pixelPtr[0]); + } + } + + color = (color == color2) ? color1 : color2; + if (x & 1) + pixelPtr++; + } + } + else + { + TUint8 bytemask = TUint8((aX & 1) ? 0x0f : 0xf0); + + if (aDrawMode == CGraphicsContext::EDrawModeAND) + { + for (TInt x = aX; x < xLimit; x++,dataMask <<= 1,bytemask = (TUint8)~bytemask) + { + if (aData[0] & dataMask) + pixelPtr[0] &= bytemask; + + if (x & 1) + pixelPtr++; + } + } + } + + aData++; + } + } + +void CDrawFourBppBitmapGray::WriteBinaryLineVertical(TInt aX,TInt aY,TUint32* aData,TInt aLength,TRgb aColor,TBool aUp) + { + if (iUserDispMode == EGray2) + aColor = TRgb::_Gray2(aColor._Gray2()); + + TUint32 color1 = 0; + TUint32 color2 = 0; + const TUint32 gray16 = aColor._Gray16(); + + if (iUserDispMode == EGray4 && gray16 % 5 != 0) + { + color1 = Hash(gray16,aX,aY); + color2 = Hash(gray16,aX,aY + 1); + } + else + color1 = color2 = gray16; + + const TInt yLimit = aY + (aUp ? -aLength : aLength); + const TInt scanLineWords = aUp ? -iScanLineWords : iScanLineWords; + const TInt startword = aX / KPixelsPerWord; + const TInt startShift = (aX & 7) * KBitsPerPixel; + TUint32* pixelPtr = ScanLine(aY) + startword; + const TUint32* pixelPtrLimit = ScanLine(yLimit) + startword; + const TUint32 mask = ~(0xf << startShift); + TUint32 dataMask = 1; + + if (color1 || color2) + { + color1 <<= startShift; + color2 <<= startShift; + TUint32 color = color1; + + while (pixelPtr != pixelPtrLimit) + { + if (!dataMask) + { + dataMask = 1; + aData++; + } + + if (aData[0] & dataMask) + { + pixelPtr[0] &= mask; + pixelPtr[0] |= color; + } + + dataMask <<= 1; + pixelPtr += scanLineWords; + color = (color == color2) ? color1 : color2; + } + } + else + { + while (pixelPtr != pixelPtrLimit) + { + if (!dataMask) + { + dataMask = 1; + aData++; + } + + if (aData[0] & dataMask) + pixelPtr[0] &= mask; + + dataMask <<= 1; + pixelPtr += scanLineWords; + } + } + } + +void CDrawFourBppBitmapGray::WriteLine(TInt aX,TInt aY,TInt aLength,TUint32* aBuffer) + { + if (iUserDispMode == EGray2) + ShadeBuffer(aLength,aBuffer); + else if (iUserDispMode == EGray4) + DitherBuffer(aX,aY,aLength,aBuffer); + + const TInt startLong = (aX + KPixelsPerWord - 1) & (~7); + const TInt finishLong = (aX + aLength) & (~7); + const TInt startShift = (startLong - aX) * KBitsPerPixel; + const TInt startShiftExtra = 32 - startShift; + const TInt finishShift = (KPixelsPerWord - aX - aLength + finishLong) * KBitsPerPixel; + TUint32* base = ScanLine(aY); + TUint32* pixelPtr = base + (startLong / KPixelsPerWord); + TUint32* pixelPtrLimit = base + (finishLong / KPixelsPerWord); + + if (finishLong < startLong) + { + const TUint32 mask = (0xffffffff >> finishShift) & (0xffffffff << startShiftExtra); + pixelPtrLimit[0] &= ~mask; + pixelPtrLimit[0] |= (aBuffer[0] << startShiftExtra) & mask; + return; + } + + const TInt wordsToCopy = pixelPtrLimit - pixelPtr; + + if (startShift > 0) + { + pixelPtr[-1] &= 0xffffffff >> startShift; + pixelPtr[-1] |= aBuffer[0] << startShiftExtra; + + CopyOffset(pixelPtr,aBuffer,wordsToCopy,startShift); + aBuffer += wordsToCopy; + + if (finishLong < aX + aLength) + { + TUint32 first = (aBuffer[0] >> startShift) | (aBuffer[1] << startShiftExtra); + pixelPtrLimit[0] = PasteInt(first,pixelPtrLimit[0],finishShift); + } + } + else + { + while (pixelPtr < pixelPtrLimit) + *pixelPtr++ = *aBuffer++; + + if (finishLong < aX + aLength) + pixelPtrLimit[0] = PasteInt(aBuffer[0],pixelPtrLimit[0],finishShift); + } + } + +void CDrawFourBppBitmapGray::WriteLineXOR(TInt aX,TInt aY,TInt aLength,TUint32* aBuffer) + { + if (iUserDispMode == EGray2) + ShadeBuffer(aLength,aBuffer); + else if (iUserDispMode == EGray4) + DitherBuffer(aX,aY,aLength,aBuffer); + + const TInt startLong = (aX + KPixelsPerWord - 1) & (~7); + const TInt finishLong = (aX + aLength) & (~7); + const TInt startShift = (startLong - aX) * KBitsPerPixel; + const TInt startShiftExtra = 32 - startShift; + const TInt finishShift = (KPixelsPerWord - aX - aLength + finishLong) * KBitsPerPixel; + TUint32* base = ScanLine(aY); + TUint32* pixelPtr = base + (startLong / KPixelsPerWord); + TUint32* pixelPtrLimit = base + (finishLong / KPixelsPerWord); + + if (finishLong < startLong) + { + const TUint32 mask = (0xffffffff >> finishShift) & (0xffffffff << startShiftExtra); + pixelPtrLimit[0] ^= (aBuffer[0] << startShiftExtra) & mask; + return; + } + + if (startShift > 0) + { + pixelPtr[-1] ^= aBuffer[0] << startShiftExtra; + + while (pixelPtr < pixelPtrLimit) + { + pixelPtr[0] ^= (aBuffer[0] >> startShift) | (aBuffer[1] << startShiftExtra); + + pixelPtr++; + aBuffer++; + } + + if (finishLong < aX + aLength) + { + TUint32 first = (aBuffer[0] >> startShift) | (aBuffer[1] << startShiftExtra); + pixelPtrLimit[0] ^= PasteInt(first,0,finishShift); + } + } + else + { + while (pixelPtr < pixelPtrLimit) + *pixelPtr++ ^= *aBuffer++; + + if (finishLong < aX + aLength) + pixelPtrLimit[0] ^= PasteInt(aBuffer[0],0,finishShift); + } + } + +void CDrawFourBppBitmapGray::WriteLineAND(TInt aX,TInt aY,TInt aLength,TUint32* aBuffer) + { + if (iUserDispMode == EGray2) + ShadeBuffer(aLength,aBuffer); + else if (iUserDispMode == EGray4) + DitherBuffer(aX,aY,aLength,aBuffer); + + const TInt startLong = (aX + KPixelsPerWord - 1) & (~7); + const TInt finishLong = (aX + aLength) & (~7); + const TInt startShift = (startLong - aX) * KBitsPerPixel; + const TInt startShiftExtra = 32 - startShift; + const TInt finishShift = (KPixelsPerWord - aX - aLength + finishLong) * KBitsPerPixel; + TUint32* base = ScanLine(aY); + TUint32* pixelPtr = base + (startLong / KPixelsPerWord); + TUint32* pixelPtrLimit = base + (finishLong / KPixelsPerWord); + + if (finishLong < startLong) + { + const TUint32 mask = (0xffffffff >> finishShift) & (0xffffffff << startShiftExtra); + pixelPtrLimit[0] &= (aBuffer[0] << startShiftExtra) | ~mask; + return; + } + + if (startShift > 0) + { + pixelPtr[-1] &= (aBuffer[0] << startShiftExtra) | (0xffffffff >> startShift); + + while (pixelPtr < pixelPtrLimit) + { + pixelPtr[0] &= (aBuffer[0] >> startShift) | (aBuffer[1] << startShiftExtra); + + pixelPtr++; + aBuffer++; + } + + if (finishLong < aX + aLength) + { + TUint32 first = (aBuffer[0] >> startShift) | (aBuffer[1] << startShiftExtra); + pixelPtrLimit[0] &= PasteInt(first,0xffffffff,finishShift); + } + } + else + { + while (pixelPtr < pixelPtrLimit) + *pixelPtr++ &= *aBuffer++; + + if (finishLong < aX + aLength) + pixelPtrLimit[0] &= PasteInt(aBuffer[0],0xffffffff,finishShift); + } + } + +void CDrawFourBppBitmapGray::WriteLineOR(TInt aX,TInt aY,TInt aLength,TUint32* aBuffer) + { + if (iUserDispMode == EGray2) + ShadeBuffer(aLength,aBuffer); + else if (iUserDispMode == EGray4) + DitherBuffer(aX,aY,aLength,aBuffer); + + const TInt startLong = (aX + KPixelsPerWord - 1) & (~7); + const TInt finishLong = (aX + aLength) & (~7); + const TInt startShift = (startLong - aX) * KBitsPerPixel; + const TInt startShiftExtra = 32 - startShift; + const TInt finishShift = (KPixelsPerWord - aX - aLength + finishLong) * KBitsPerPixel; + TUint32* base = ScanLine(aY); + TUint32* pixelPtr = base + (startLong / KPixelsPerWord); + TUint32* pixelPtrLimit = base + (finishLong / KPixelsPerWord); + + if (finishLong < startLong) + { + const TUint32 mask = (0xffffffff >> finishShift) & (0xffffffff << startShiftExtra); + pixelPtrLimit[0] |= (aBuffer[0] << startShiftExtra) & mask; + return; + } + + if (startShift > 0) + { + pixelPtr[-1] |= aBuffer[0] << startShiftExtra; + + while (pixelPtr < pixelPtrLimit) + { + pixelPtr[0] |= (aBuffer[0] >> startShift) | (aBuffer[1] << startShiftExtra); + + pixelPtr++; + aBuffer++; + } + + if (finishLong < aX + aLength) + { + TUint32 first = (aBuffer[0] >> startShift) | (aBuffer[1] << startShiftExtra); + pixelPtrLimit[0] |= PasteInt(first,0,finishShift); + } + } + else + { + while (pixelPtr < pixelPtrLimit) + *pixelPtr++ |= *aBuffer++; + + if (finishLong < aX + aLength) + pixelPtrLimit[0] |= PasteInt(aBuffer[0],0,finishShift); + } + } + +/** +MAlphaBlend::WriteRgbAlphaLine() implementation. +@see MAlphaBlend::WriteRgbAlphaLine() +*/ +void CDrawFourBppBitmapGray::WriteRgbAlphaLine(TInt aX, TInt aY, TInt aLength, + const TUint8* aRgbBuffer, + const TUint8* aMaskBuffer, + MAlphaBlend::TShadowing aShadowing, + CGraphicsContext::TDrawMode /*aDrawMode*/) + { + TUint8* pixelPtr = REINTERPRET_CAST(TUint8*,ScanLine(aY)) + (aX / 2); + TRgb pixelClr; + + if (aX & 1) + { + TRgb srcColor(aRgbBuffer[2],aRgbBuffer[1],aRgbBuffer[0]); + if(aShadowing == MAlphaBlend::EShdwBefore) + { + Shadow(srcColor); + } + TInt pixelValue = (pixelPtr[0] >> 4) * (255 - aMaskBuffer[0]); + TInt srceValue = (((srcColor.Red() << 1) + + srcColor.Green() + (srcColor.Green() << 2) + + srcColor.Blue()) >> 7) * aMaskBuffer[0]; + + pixelValue += srceValue; + pixelValue /= 255; + + pixelClr = TRgb::_Gray16(pixelValue); + if(aShadowing == MAlphaBlend::EShdwAfter) + { + Shadow(pixelClr); + } + MapColorToUserDisplayMode(pixelClr); + + pixelPtr[0] &= 0x0f; + pixelPtr[0] |= TUint8(pixelClr._Gray16() << 4); + + pixelPtr++; + aRgbBuffer += 4; + aMaskBuffer++; + aLength--; + } + + const TUint8* pixelPtrLimit = pixelPtr + (aLength / 2); + + while (pixelPtr < pixelPtrLimit) + { + TRgb srcColor1(aRgbBuffer[2],aRgbBuffer[1],aRgbBuffer[0]); + if(aShadowing == MAlphaBlend::EShdwBefore) + { + Shadow(srcColor1); + } + TInt pixelValue = (pixelPtr[0] & 0x0f) * (255 - aMaskBuffer[0]); + TInt srceValue = (((srcColor1.Red() << 1) + + srcColor1.Green() + (srcColor1.Green() << 2) + + srcColor1.Blue()) >> 7) * aMaskBuffer[0]; + + pixelValue += srceValue; + pixelValue /= 255; + + TInt nextValue = (pixelPtr[0] >> 4) * (255 - aMaskBuffer[1]); + + pixelClr = TRgb::_Gray16(pixelValue); + if(aShadowing == MAlphaBlend::EShdwAfter) + { + Shadow(pixelClr); + } + MapColorToUserDisplayMode(pixelClr); + + pixelPtr[0] = TUint8(pixelClr._Gray16()); + + TRgb srcColor2(aRgbBuffer[6],aRgbBuffer[5],aRgbBuffer[4]); + if(aShadowing == MAlphaBlend::EShdwBefore) + { + Shadow(srcColor2); + } + srceValue = (((srcColor2.Red() << 1) + + srcColor2.Green() + (srcColor2.Green() << 2) + + srcColor2.Blue()) >> 7) * aMaskBuffer[1]; + + nextValue += srceValue; + nextValue /= 255; + + pixelClr = TRgb::_Gray16(nextValue); + if(aShadowing == MAlphaBlend::EShdwAfter) + { + Shadow(pixelClr); + } + MapColorToUserDisplayMode(pixelClr); + + pixelPtr[0] |= TUint8(pixelClr._Gray16() << 4); + + pixelPtr++; + aRgbBuffer += 8; + aMaskBuffer += 2; + } + + if (aLength & 1) + { + TRgb srcColor(aRgbBuffer[2],aRgbBuffer[1],aRgbBuffer[0]); + if(aShadowing == MAlphaBlend::EShdwBefore) + { + Shadow(srcColor); + } + TInt pixelValue = (pixelPtr[0] & 0x0f) * (255 - aMaskBuffer[0]); + TInt srceValue = (((srcColor.Red() << 1) + + srcColor.Green() + (srcColor.Green() << 2) + + srcColor.Blue()) >> 7) * aMaskBuffer[0]; + + pixelValue += srceValue; + pixelValue /= 255; + + pixelClr = TRgb::_Gray16(pixelValue); + if(aShadowing == MAlphaBlend::EShdwAfter) + { + Shadow(pixelClr); + } + MapColorToUserDisplayMode(pixelClr); + + pixelPtr[0] &= 0xf0; + pixelPtr[0] |= TUint8(pixelClr._Gray16()); + } + } + +void CDrawFourBppBitmapGray::WriteRgbMulti(TInt aX,TInt aY,TInt aLength,TInt aHeight,TRgb aColor) + { + if (iUserDispMode == EGray2) + aColor = TRgb::_Gray2(aColor._Gray2()); + + const TInt startLong = (aX + KPixelsPerWord - 1) & (~7); + const TInt finishLong = (aX + aLength) & (~7); + const TInt yLimit = aY + aHeight; + const TInt startShift = (startLong - aX) * KBitsPerPixel; + const TInt finishShift = (KPixelsPerWord - aX - aLength + finishLong) * KBitsPerPixel; + TUint32* base = ScanLine(aY); + TUint32* pixelPtr = base + (startLong / KPixelsPerWord); + TUint32* pixelPtrLimit = base + (finishLong / KPixelsPerWord); + + TUint32 colorWord1,colorWord2; + if (iUserDispMode == EGray4 && aColor._Gray16() % 5 != 0) + { + colorWord1 = HashInt(aColor,startLong,aY); + colorWord2 = HashInt(aColor,startLong,aY + 1); + } + else + colorWord1 = colorWord2 = ColorInt(aColor); + TUint32 colorWord = colorWord1; + + if (finishLong < startLong) + { + const TUint32 mask = (0xffffffff >> finishShift) & (0xffffffff << (32 - startShift)); + const TUint32 invertedMask = ~mask; + colorWord &= mask; + colorWord1 &= mask; + colorWord2 &= mask; + + for (; aY < yLimit; aY++) + { + pixelPtrLimit[0] &= invertedMask; + pixelPtrLimit[0] |= colorWord; + pixelPtrLimit += iScanLineWords; + colorWord = (colorWord == colorWord2) ? colorWord1 : colorWord2; + } + return; + } + + const TBool extra = (finishLong < aX + aLength); + + for (; aY < yLimit; aY++) + { + if (startShift > 0) + pixelPtr[-1] = PasteInt(pixelPtr[-1],colorWord,startShift); + + for (TUint32* tempPixelPtr = pixelPtr; tempPixelPtr < pixelPtrLimit; tempPixelPtr++) + tempPixelPtr[0] = colorWord; + + if (extra) + pixelPtrLimit[0] = PasteInt(colorWord,pixelPtrLimit[0],finishShift); + + pixelPtr += iScanLineWords; + pixelPtrLimit += iScanLineWords; + colorWord = (colorWord == colorWord2) ? colorWord1 : colorWord2; + } + } + +void CDrawFourBppBitmapGray::WriteRgbMultiXOR(TInt aX,TInt aY,TInt aLength,TInt aHeight,TRgb aColor) + { + if (iUserDispMode == EGray2) + aColor = TRgb::_Gray2(aColor._Gray2()); + + const TInt startLong = (aX + KPixelsPerWord - 1) & (~7); + const TInt finishLong = (aX + aLength) & (~7); + const TInt yLimit = aY + aHeight; + const TInt startShift = (startLong - aX) * KBitsPerPixel; + const TInt finishShift = (KPixelsPerWord - aX - aLength + finishLong) * KBitsPerPixel; + TUint32* base = ScanLine(aY); + TUint32* pixelPtr = base + (startLong / KPixelsPerWord); + TUint32* pixelPtrLimit = base + (finishLong / KPixelsPerWord); + + TUint32 colorWord1,colorWord2; + if (iUserDispMode == EGray4 && aColor._Gray16() % 5 != 0) + { + colorWord1 = HashInt(aColor,startLong,aY); + colorWord2 = HashInt(aColor,startLong,aY + 1); + } + else + colorWord1 = colorWord2 = ColorInt(aColor); + TUint32 colorWord = colorWord1; + + if (finishLong < startLong) + { + const TUint32 mask = (0xffffffff >> finishShift) & (0xffffffff << (32 - startShift)); + colorWord &= mask; + colorWord1 &= mask; + colorWord2 &= mask; + + for (; aY < yLimit; aY++) + { + pixelPtrLimit[0] ^= colorWord; + pixelPtrLimit += iScanLineWords; + colorWord = (colorWord == colorWord2) ? colorWord1 : colorWord2; + } + return; + } + + const TBool extra = (finishLong < aX + aLength); + + for (; aY < yLimit; aY++) + { + if (startShift > 0) + pixelPtr[-1] ^= PasteInt(0,colorWord,startShift); + + for (TUint32* tempPixelPtr = pixelPtr; tempPixelPtr < pixelPtrLimit; tempPixelPtr++) + tempPixelPtr[0] ^= colorWord; + + if (extra) + pixelPtrLimit[0] ^= PasteInt(colorWord,0,finishShift); + + pixelPtr += iScanLineWords; + pixelPtrLimit += iScanLineWords; + colorWord = (colorWord == colorWord2) ? colorWord1 : colorWord2; + } + } + +void CDrawFourBppBitmapGray::WriteRgbMultiAND(TInt aX,TInt aY,TInt aLength,TInt aHeight,TRgb aColor) + { + if (iUserDispMode == EGray2) + aColor = TRgb::_Gray2(aColor._Gray2()); + + const TInt startLong = (aX + KPixelsPerWord - 1) & (~7); + const TInt finishLong = (aX + aLength) & (~7); + const TInt yLimit = aY + aHeight; + const TInt startShift = (startLong - aX) * KBitsPerPixel; + const TInt finishShift = (KPixelsPerWord - aX - aLength + finishLong) * KBitsPerPixel; + TUint32* base = ScanLine(aY); + TUint32* pixelPtr = base + (startLong / KPixelsPerWord); + TUint32* pixelPtrLimit = base + (finishLong / KPixelsPerWord); + + TUint32 colorWord1,colorWord2; + if (iUserDispMode == EGray4 && aColor._Gray16() % 5 != 0) + { + colorWord1 = HashInt(aColor,startLong,aY); + colorWord2 = HashInt(aColor,startLong,aY + 1); + } + else + colorWord1 = colorWord2 = ColorInt(aColor); + TUint32 colorWord = colorWord1; + + if (finishLong < startLong) + { + const TUint32 mask = (0xffffffff >> finishShift) & (0xffffffff << (32 - startShift)); + const TUint32 invertedMask = ~mask; + colorWord &= mask; + colorWord1 &= mask; + colorWord2 &= mask; + colorWord |= invertedMask; + colorWord1 |= invertedMask; + colorWord2 |= invertedMask; + + for (; aY < yLimit; aY++) + { + pixelPtrLimit[0] &= colorWord; + pixelPtrLimit += iScanLineWords; + colorWord = (colorWord == colorWord2) ? colorWord1 : colorWord2; + } + return; + } + + const TBool extra = (finishLong < aX + aLength); + + for (; aY < yLimit; aY++) + { + if (startShift > 0) + pixelPtr[-1] &= PasteInt(0xffffffff,colorWord,startShift); + + for (TUint32* tempPixelPtr = pixelPtr; tempPixelPtr < pixelPtrLimit; tempPixelPtr++) + tempPixelPtr[0] &= colorWord; + + if (extra) + pixelPtrLimit[0] &= PasteInt(colorWord,0xffffffff,finishShift); + + pixelPtr += iScanLineWords; + pixelPtrLimit += iScanLineWords; + colorWord = (colorWord == colorWord2) ? colorWord1 : colorWord2; + } + } + +void CDrawFourBppBitmapGray::WriteRgbMultiOR(TInt aX,TInt aY,TInt aLength,TInt aHeight,TRgb aColor) + { + if (iUserDispMode == EGray2) + aColor = TRgb::_Gray2(aColor._Gray2()); + + const TInt startLong = (aX + KPixelsPerWord - 1) & (~7); + const TInt finishLong = (aX + aLength) & (~7); + const TInt yLimit = aY + aHeight; + const TInt startShift = (startLong - aX) * KBitsPerPixel; + const TInt finishShift = (KPixelsPerWord - aX - aLength + finishLong) * KBitsPerPixel; + TUint32* base = ScanLine(aY); + TUint32* pixelPtr = base + (startLong / KPixelsPerWord); + TUint32* pixelPtrLimit = base + (finishLong / KPixelsPerWord); + + TUint32 colorWord1,colorWord2; + if (iUserDispMode == EGray4 && aColor._Gray16() % 5 != 0) + { + colorWord1 = HashInt(aColor,startLong,aY); + colorWord2 = HashInt(aColor,startLong,aY + 1); + } + else + colorWord1 = colorWord2 = ColorInt(aColor); + TUint32 colorWord = colorWord1; + + if (finishLong < startLong) + { + const TUint32 mask = (0xffffffff >> finishShift) & (0xffffffff << (32 - startShift)); + colorWord &= mask; + colorWord1 &= mask; + colorWord2 &= mask; + + for (; aY < yLimit; aY++) + { + pixelPtrLimit[0] |= colorWord; + pixelPtrLimit += iScanLineWords; + colorWord = (colorWord == colorWord2) ? colorWord1 : colorWord2; + } + return; + } + + const TBool extra = (finishLong < aX + aLength); + + for (; aY < yLimit; aY++) + { + if (startShift > 0) + pixelPtr[-1] |= PasteInt(0,colorWord,startShift); + + for (TUint32* tempPixelPtr = pixelPtr; tempPixelPtr < pixelPtrLimit; tempPixelPtr++) + tempPixelPtr[0] |= colorWord; + + if (extra) + pixelPtrLimit[0] |= PasteInt(colorWord,0,finishShift); + + pixelPtr += iScanLineWords; + pixelPtrLimit += iScanLineWords; + colorWord = (colorWord == colorWord2) ? colorWord1 : colorWord2; + } + } + +void CDrawFourBppBitmapGray::WriteRgbAlphaMulti(TInt aX,TInt aY,TInt aLength,TRgb aColor,const TUint8* aMaskBuffer) + { + DeOrientate(aX,aY); + TUint8* pixelPtr = REINTERPRET_CAST(TUint8*,ScanLine(aY)) + (aX / 2); + const TBool oddEndCoord = (aX + aLength) & 1; + const TUint8* maskBufferPtrLimit = aMaskBuffer + aLength - (oddEndCoord ? 1 : 0); + + if (iShadowMode) + Shadow(aColor); + + const TInt gray = aColor._Gray256(); + if (aX & 1) + { + const TInt upper = ((gray * aMaskBuffer[0]) + ((255 - aMaskBuffer[0]) * (pixelPtr[0] >> 4) * 17)) / (255 * 17); + pixelPtr[0] &= 0x0f; + pixelPtr[0] |= TUint8(upper << 4); + + pixelPtr++; + aMaskBuffer++; + } + + while (aMaskBuffer < maskBufferPtrLimit) + { + const TInt lower = ((gray * aMaskBuffer[0]) + ((255 - aMaskBuffer[0]) * (pixelPtr[0] & 0x0f) * 17)) / (255 * 17); + const TInt upper = ((gray * aMaskBuffer[1]) + ((255 - aMaskBuffer[1]) * (pixelPtr[0] >> 4) * 17)) / (255 * 17); + pixelPtr[0] = TUint8(lower); + pixelPtr[0] |= TUint8(upper << 4); + + pixelPtr++; + aMaskBuffer += 2; + } + + if (oddEndCoord) + { + const TInt lower = ((gray * aMaskBuffer[0]) + ((255 - aMaskBuffer[0]) * (pixelPtr[0] & 0x0f) * 17)) / (255 * 17); + pixelPtr[0] &= 0xf0; + pixelPtr[0] |= TUint8(lower); + } + } + +void CDrawFourBppBitmapGray::MapColorToUserDisplayMode(TRgb& aColor) + { + switch (iUserDispMode) + { + case EGray2: + aColor = TRgb::_Gray2(aColor._Gray2()); + break; + case EColor16: + aColor = TRgb::_Gray4(aColor._Gray4()); + break; + default: + break; + } + } + +void CDrawFourBppBitmapGray::MapBufferToUserDisplayMode(TInt aLength,TUint32* aBuffer) + { + TUint8* bufferPtr = (TUint8*)aBuffer; + const TUint8* bufferLimit = bufferPtr + ((aLength + 1) / 2); + + switch (iUserDispMode) + { + case EGray2: + while (bufferPtr < bufferLimit) + { + TUint8 value = TUint8(*bufferPtr & 0x88); + value |= value >> 1; + *bufferPtr++ = TUint8(value | (value >> 2)); + } + break; + case EColor16: + while (bufferPtr < bufferLimit) + { + TUint8 value = TUint8(*bufferPtr & 0xcc); + *bufferPtr++ = TUint8(value | (value >> 2)); + } + break; + default: + break; + } + } + +TInt CDrawFourBppBitmapGray::WriteRgbOutlineAndShadow(TInt aX, TInt aY, const TInt aLength, + TUint32 aOutlinePenColor, TUint32 aShadowColor, + TUint32 aFillColor, const TUint8* aDataBuffer) + { + //This is non-optimised since this screen mode is rarely used and is usually + //fast enough without optimisation. + DeOrientate(aX,aY); + TUint8* pixelPtr = REINTERPRET_CAST(TUint8*,ScanLine(aY)) + (aX / 2); + const TBool oddEndCoord = (aX + aLength) & 1; + const TUint8* dataBufferPtrLimit = aDataBuffer + aLength - (oddEndCoord ? 1 : 0); + + TUint8 index = 0; + TRgb finalColor; + TRgb lowerPixelColor; + TRgb upperPixelColor; + + TRgb outlinePenColor; + outlinePenColor.SetInternal(aOutlinePenColor); + TRgb shadowColor; + shadowColor.SetInternal(aShadowColor); + TRgb fillColor; + fillColor.SetInternal(aFillColor); + + const TInt redOutlinePenColor = outlinePenColor.Red(); + const TInt redShadowColor = shadowColor.Red(); + const TInt redFillColor = fillColor.Red(); + + const TInt greenOutlinePenColor = outlinePenColor.Green(); + const TInt greenShadowColor = shadowColor.Green(); + const TInt greenFillColor = fillColor.Green(); + + const TInt blueOutlinePenColor = outlinePenColor.Blue(); + const TInt blueShadowColor = shadowColor.Blue(); + const TInt blueFillColor = fillColor.Blue(); + + if (aX & 1) + { + index = *aDataBuffer; + + if (255 != FourColorBlendLookup[index][KBackgroundColorIndex]) + { + TRgb backgroundColor = TRgb::_Gray16(pixelPtr[0] >> 4); + finalColor = BlendFourColors(aOutlinePenColor, aShadowColor, aFillColor, + redOutlinePenColor, redShadowColor, redFillColor, + greenOutlinePenColor, greenShadowColor, greenFillColor, + blueOutlinePenColor, blueShadowColor, blueFillColor, + backgroundColor, index); + pixelPtr[0] &= 0x0f; + pixelPtr[0] |= TUint8(finalColor._Gray16() << 4); + } + + pixelPtr++; + aDataBuffer++; + } + + while (aDataBuffer < dataBufferPtrLimit) + { + index = aDataBuffer[0]; + TRgb upperPixelBackgroundColor = TRgb::_Gray16(pixelPtr[0] >> 4); + if (255 != FourColorBlendLookup[index][KBackgroundColorIndex]) + { + TRgb lowerPixelBackgroundColor = TRgb::_Gray16(pixelPtr[0] & 0x0f); + lowerPixelColor = BlendFourColors(aOutlinePenColor, aShadowColor, aFillColor, + redOutlinePenColor, redShadowColor, redFillColor, + greenOutlinePenColor, greenShadowColor, greenFillColor, + blueOutlinePenColor, blueShadowColor, blueFillColor, + lowerPixelBackgroundColor, index); + pixelPtr[0] = TUint8(lowerPixelColor._Gray16()); + } + + index = aDataBuffer[1]; + if (255 != FourColorBlendLookup[index][KBackgroundColorIndex]) + { + upperPixelColor = BlendFourColors(aOutlinePenColor, aShadowColor, aFillColor, + redOutlinePenColor, redShadowColor, redFillColor, + greenOutlinePenColor, greenShadowColor, greenFillColor, + blueOutlinePenColor, blueShadowColor, blueFillColor, + upperPixelBackgroundColor, index); + pixelPtr[0] |= TUint8(upperPixelColor._Gray16() << 4); + } + pixelPtr++; + aDataBuffer += 2; + } + + if (oddEndCoord) + { + index = aDataBuffer[0]; + if (255 != FourColorBlendLookup[index][KBackgroundColorIndex]) + { + TRgb backgroundColor = TRgb::_Gray16(pixelPtr[0] & 0x0f); + finalColor = BlendFourColors(aOutlinePenColor, aShadowColor, aFillColor, + redOutlinePenColor, redShadowColor, redFillColor, + greenOutlinePenColor, greenShadowColor, greenFillColor, + blueOutlinePenColor, blueShadowColor, blueFillColor, + backgroundColor, index); + pixelPtr[0] &= 0xf0; + pixelPtr[0] |= TUint8(finalColor._Gray16()); + } + } + return KErrNone; + } + +TRgb CDrawFourBppBitmapGray::BlendFourColors(TUint32 aOutlinePenColor, TUint32 aShadowColor, TUint32 aFillColor, + TInt aRedOutlinePenColor, TInt aRedShadowColor, TInt aRedFillColor, + TInt aGreenOutlinePenColor, TInt aGreenShadowColor, TInt aGreenFillColor, + TInt aBlueOutlinePenColor, TInt aBlueShadowColor, TInt aBlueFillColor, + TRgb aBackgroundColor, TUint8 aIndex) const + { + TRgb finalColor; + if (255 == FourColorBlendLookup[aIndex][KFillColorIndex]) + { + //fill colour + finalColor.SetInternal(aFillColor); + } + else if (255 == FourColorBlendLookup[aIndex][KShadowColorIndex]) + { + //Shadow colour + finalColor.SetInternal(aShadowColor); + } + else if (255 == FourColorBlendLookup[aIndex][KOutlineColorIndex]) + { + //Outline colour + finalColor.SetInternal(aOutlinePenColor); + } + else + { + TInt blendedRedColor = (aRedOutlinePenColor * FourColorBlendLookup[aIndex][KOutlineColorIndex] + + aRedShadowColor * FourColorBlendLookup[aIndex][KShadowColorIndex] + + aRedFillColor * FourColorBlendLookup[aIndex][KFillColorIndex] + + aBackgroundColor.Red() * FourColorBlendLookup[aIndex][KBackgroundColorIndex]) >> 8; + + TInt blendedGreenColor = (aGreenOutlinePenColor * FourColorBlendLookup[aIndex][KOutlineColorIndex] + + aGreenShadowColor * FourColorBlendLookup[aIndex][KShadowColorIndex] + + aGreenFillColor * FourColorBlendLookup[aIndex][KFillColorIndex] + + aBackgroundColor.Green() * FourColorBlendLookup[aIndex][KBackgroundColorIndex]) >> 8; + + TInt blendedBlueColor = (aBlueOutlinePenColor * FourColorBlendLookup[aIndex][KOutlineColorIndex] + + aBlueShadowColor * FourColorBlendLookup[aIndex][KShadowColorIndex] + + aBlueFillColor * FourColorBlendLookup[aIndex][KFillColorIndex] + + aBackgroundColor.Blue() * FourColorBlendLookup[aIndex][KBackgroundColorIndex]) >> 8; + finalColor = TRgb(blendedRedColor, blendedGreenColor, blendedBlueColor); + } + return finalColor; + }