--- /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;
+ }