diff options
Diffstat (limited to 'vcl/unx/generic/printergfx/bitmap_gfx.cxx')
| -rw-r--r-- | vcl/unx/generic/printergfx/bitmap_gfx.cxx | 732 |
1 files changed, 732 insertions, 0 deletions
diff --git a/vcl/unx/generic/printergfx/bitmap_gfx.cxx b/vcl/unx/generic/printergfx/bitmap_gfx.cxx new file mode 100644 index 000000000000..9275db1e469f --- /dev/null +++ b/vcl/unx/generic/printergfx/bitmap_gfx.cxx @@ -0,0 +1,732 @@ +/************************************************************************* + * + * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. + * + * Copyright 2000, 2010 Oracle and/or its affiliates. + * + * OpenOffice.org - a multi-platform office productivity suite + * + * This file is part of OpenOffice.org. + * + * OpenOffice.org is free software: you can redistribute it and/or modify + * it under the terms of the GNU Lesser General Public License version 3 + * only, as published by the Free Software Foundation. + * + * OpenOffice.org is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU Lesser General Public License version 3 for more details + * (a copy is included in the LICENSE file that accompanied this code). + * + * You should have received a copy of the GNU Lesser General Public License + * version 3 along with OpenOffice.org. If not, see + * <http://www.openoffice.org/license.html> + * for a copy of the LGPLv3 License. + * + ************************************************************************/ + +// MARKER(update_precomp.py): autogen include statement, do not remove +#include "precompiled_vcl.hxx" + +#include "psputil.hxx" + +#include "printergfx.hxx" +#include "vcl/strhelper.hxx" + +namespace psp { + +const sal_uInt32 nLineLength = 80; +const sal_uInt32 nBufferSize = 16384; + +/* + * + * Bitmap compression / Hex encoding / Ascii85 Encoding + * + */ + +PrinterBmp::~PrinterBmp () +{ /* dont need this, but C50 does */ } + +/* virtual base class */ + +class ByteEncoder +{ +private: + +public: + + virtual void EncodeByte (sal_uInt8 nByte) = 0; + virtual ~ByteEncoder () = 0; +}; + +ByteEncoder::~ByteEncoder () +{ /* dont need this, but the C50 does */ } + +/* HexEncoder */ + +class HexEncoder : public ByteEncoder +{ +private: + + osl::File* mpFile; + sal_uInt32 mnColumn; + sal_uInt32 mnOffset; + sal_Char mpFileBuffer[nBufferSize + 16]; + + HexEncoder (); /* dont use */ + +public: + + HexEncoder (osl::File* pFile); + virtual ~HexEncoder (); + void WriteAscii (sal_uInt8 nByte); + virtual void EncodeByte (sal_uInt8 nByte); + void FlushLine (); +}; + +HexEncoder::HexEncoder (osl::File* pFile) : + mpFile (pFile), + mnColumn (0), + mnOffset (0) +{} + +HexEncoder::~HexEncoder () +{ + FlushLine (); + if (mnColumn > 0) + WritePS (mpFile, "\n"); +} + +void +HexEncoder::WriteAscii (sal_uInt8 nByte) +{ + sal_uInt32 nOff = psp::getHexValueOf (nByte, mpFileBuffer + mnOffset); + mnColumn += nOff; + mnOffset += nOff; + + if (mnColumn >= nLineLength) + { + mnOffset += psp::appendStr ("\n", mpFileBuffer + mnOffset); + mnColumn = 0; + } + if (mnOffset >= nBufferSize) + FlushLine (); +} + +void +HexEncoder::EncodeByte (sal_uInt8 nByte) +{ + WriteAscii (nByte); +} + +void +HexEncoder::FlushLine () +{ + if (mnOffset > 0) + { + WritePS (mpFile, mpFileBuffer, mnOffset); + mnOffset = 0; + } +} + +/* Ascii85 encoder, is abi compatible with HexEncoder but writes a ~> to + indicate end of data EOD */ + +class Ascii85Encoder : public ByteEncoder +{ +private: + + osl::File* mpFile; + sal_uInt32 mnByte; + sal_uInt8 mpByteBuffer[4]; + + sal_uInt32 mnColumn; + sal_uInt32 mnOffset; + sal_Char mpFileBuffer[nBufferSize + 16]; + + Ascii85Encoder (); /* dont use */ + + inline void PutByte (sal_uInt8 nByte); + inline void PutEOD (); + void ConvertToAscii85 (); + void FlushLine (); + +public: + + Ascii85Encoder (osl::File* pFile); + virtual ~Ascii85Encoder (); + virtual void EncodeByte (sal_uInt8 nByte); + void WriteAscii (sal_uInt8 nByte); +}; + +Ascii85Encoder::Ascii85Encoder (osl::File* pFile) : + mpFile (pFile), + mnByte (0), + mnColumn (0), + mnOffset (0) +{} + +inline void +Ascii85Encoder::PutByte (sal_uInt8 nByte) +{ + mpByteBuffer [mnByte++] = nByte; +} + +inline void +Ascii85Encoder::PutEOD () +{ + WritePS (mpFile, "~>\n"); +} + +void +Ascii85Encoder::ConvertToAscii85 () +{ + if (mnByte < 4) + std::memset (mpByteBuffer + mnByte, 0, (4 - mnByte) * sizeof(sal_uInt8)); + + sal_uInt32 nByteValue = mpByteBuffer[0] * 256 * 256 * 256 + + mpByteBuffer[1] * 256 * 256 + + mpByteBuffer[2] * 256 + + mpByteBuffer[3]; + + if (nByteValue == 0 && mnByte == 4) + { + /* special case of 4 Bytes in row */ + mpFileBuffer [mnOffset] = 'z'; + + mnOffset += 1; + mnColumn += 1; + } + else + { + /* real ascii85 encoding */ + mpFileBuffer [mnOffset + 4] = (nByteValue % 85) + 33; + nByteValue /= 85; + mpFileBuffer [mnOffset + 3] = (nByteValue % 85) + 33; + nByteValue /= 85; + mpFileBuffer [mnOffset + 2] = (nByteValue % 85) + 33; + nByteValue /= 85; + mpFileBuffer [mnOffset + 1] = (nByteValue % 85) + 33; + nByteValue /= 85; + mpFileBuffer [mnOffset + 0] = (nByteValue % 85) + 33; + + mnColumn += (mnByte + 1); + mnOffset += (mnByte + 1); + + /* insert a newline if necessary */ + if (mnColumn > nLineLength) + { + sal_uInt32 nEolOff = mnColumn - nLineLength; + sal_uInt32 nBufOff = mnOffset - nEolOff; + + std::memmove (mpFileBuffer + nBufOff + 1, mpFileBuffer + nBufOff, nEolOff); + mpFileBuffer[ nBufOff ] = '\n'; + + mnOffset++; + mnColumn = nEolOff; + } + } + + mnByte = 0; +} + +void +Ascii85Encoder::WriteAscii (sal_uInt8 nByte) +{ + PutByte (nByte); + if (mnByte == 4) + ConvertToAscii85 (); + + if (mnColumn >= nLineLength) + { + mnOffset += psp::appendStr ("\n", mpFileBuffer + mnOffset); + mnColumn = 0; + } + if (mnOffset >= nBufferSize) + FlushLine (); +} + +void +Ascii85Encoder::EncodeByte (sal_uInt8 nByte) +{ + WriteAscii (nByte); +} + +void +Ascii85Encoder::FlushLine () +{ + if (mnOffset > 0) + { + WritePS (mpFile, mpFileBuffer, mnOffset); + mnOffset = 0; + } +} + +Ascii85Encoder::~Ascii85Encoder () +{ + if (mnByte > 0) + ConvertToAscii85 (); + if (mnOffset > 0) + FlushLine (); + PutEOD (); +} + +/* LZW encoder */ + +class LZWEncoder : public Ascii85Encoder +{ +private: + + struct LZWCTreeNode + { + LZWCTreeNode* mpBrother; // next node with same parent + LZWCTreeNode* mpFirstChild; // first son + sal_uInt16 mnCode; // code for the string + sal_uInt16 mnValue; // pixelvalue + }; + + LZWCTreeNode* mpTable; // LZW compression data + LZWCTreeNode* mpPrefix; // the compression is as same as the TIFF compression + sal_uInt16 mnDataSize; + sal_uInt16 mnClearCode; + sal_uInt16 mnEOICode; + sal_uInt16 mnTableSize; + sal_uInt16 mnCodeSize; + sal_uInt32 mnOffset; + sal_uInt32 mdwShift; + + LZWEncoder (); + void WriteBits (sal_uInt16 nCode, sal_uInt16 nCodeLen); + +public: + + LZWEncoder (osl::File* pOutputFile); + ~LZWEncoder (); + + virtual void EncodeByte (sal_uInt8 nByte); +}; + +LZWEncoder::LZWEncoder(osl::File* pOutputFile) : + Ascii85Encoder (pOutputFile) +{ + mnDataSize = 8; + + mnClearCode = 1 << mnDataSize; + mnEOICode = mnClearCode + 1; + mnTableSize = mnEOICode + 1; + mnCodeSize = mnDataSize + 1; + + mnOffset = 32; // free bits in dwShift + mdwShift = 0; + + mpTable = new LZWCTreeNode[ 4096 ]; + + for (sal_uInt32 i = 0; i < 4096; i++) + { + mpTable[i].mpBrother = NULL; + mpTable[i].mpFirstChild = NULL; + mpTable[i].mnCode = i; + mpTable[i].mnValue = (sal_uInt8)mpTable[i].mnCode; + } + + mpPrefix = NULL; + + WriteBits( mnClearCode, mnCodeSize ); +} + +LZWEncoder::~LZWEncoder() +{ + if (mpPrefix) + WriteBits (mpPrefix->mnCode, mnCodeSize); + + WriteBits (mnEOICode, mnCodeSize); + + delete[] mpTable; +} + +void +LZWEncoder::WriteBits (sal_uInt16 nCode, sal_uInt16 nCodeLen) +{ + mdwShift |= (nCode << (mnOffset - nCodeLen)); + mnOffset -= nCodeLen; + while (mnOffset < 24) + { + WriteAscii ((sal_uInt8)(mdwShift >> 24)); + mdwShift <<= 8; + mnOffset += 8; + } + if (nCode == 257 && mnOffset != 32) + WriteAscii ((sal_uInt8)(mdwShift >> 24)); +} + +void +LZWEncoder::EncodeByte (sal_uInt8 nByte ) +{ + LZWCTreeNode* p; + sal_uInt16 i; + sal_uInt8 nV; + + if (!mpPrefix) + { + mpPrefix = mpTable + nByte; + } + else + { + nV = nByte; + for (p = mpPrefix->mpFirstChild; p != NULL; p = p->mpBrother) + { + if (p->mnValue == nV) + break; + } + + if (p != NULL) + { + mpPrefix = p; + } + else + { + WriteBits (mpPrefix->mnCode, mnCodeSize); + + if (mnTableSize == 409) + { + WriteBits (mnClearCode, mnCodeSize); + + for (i = 0; i < mnClearCode; i++) + mpTable[i].mpFirstChild = NULL; + + mnCodeSize = mnDataSize + 1; + mnTableSize = mnEOICode + 1; + } + else + { + if(mnTableSize == (sal_uInt16)((1 << mnCodeSize) - 1)) + mnCodeSize++; + + p = mpTable + (mnTableSize++); + p->mpBrother = mpPrefix->mpFirstChild; + mpPrefix->mpFirstChild = p; + p->mnValue = nV; + p->mpFirstChild = NULL; + } + + mpPrefix = mpTable + nV; + } + } +} + +/* + * + * bitmap handling routines + * + */ + +void +PrinterGfx::DrawBitmap (const Rectangle& rDest, const Rectangle& rSrc, + const PrinterBmp& rBitmap) +{ + double fScaleX = (double)rDest.GetWidth() / (double)rSrc.GetWidth(); + double fScaleY = (double)rDest.GetHeight() / (double)rSrc.GetHeight(); + + PSGSave (); + PSTranslate (rDest.BottomLeft()); + PSScale (fScaleX, fScaleY); + + if (mnPSLevel >= 2) + { + if (rBitmap.GetDepth() == 1) + { + DrawPS2MonoImage (rBitmap, rSrc); + } + else + if (rBitmap.GetDepth() == 8 && mbColor) + { + // if the palette is larger than the image itself print it as a truecolor + // image to save diskspace. This is important for printing transparent + // bitmaps that are disassembled into small pieces + sal_Int32 nImageSz = rSrc.GetWidth() * rSrc.GetHeight(); + sal_Int32 nPaletteSz = rBitmap.GetPaletteEntryCount(); + if ((nImageSz < nPaletteSz) || (nImageSz < 24) ) + DrawPS2TrueColorImage (rBitmap, rSrc); + else + DrawPS2PaletteImage (rBitmap, rSrc); + } + else + if (rBitmap.GetDepth() == 24 && mbColor) + { + DrawPS2TrueColorImage (rBitmap, rSrc); + } + else + { + DrawPS2GrayImage (rBitmap, rSrc); + } + } + else + { + DrawPS1GrayImage (rBitmap, rSrc); + } + + PSGRestore (); +} + +/* XXX does not work XXX */ +void +PrinterGfx::DrawBitmap (const Rectangle& rDest, const Rectangle& rSrc, + const PrinterBmp& /*rBitmap*/, const PrinterBmp& /*rTransBitmap*/) +{ + double fScaleX = (double)rDest.GetWidth() / (double)rSrc.GetWidth(); + double fScaleY = (double)rDest.GetHeight() / (double)rSrc.GetHeight(); + + PSGSave (); + PSTranslate (rDest.BottomLeft()); + PSScale (fScaleX, fScaleY); + PSGRestore (); +} + +/* XXX does not work XXX */ +void +PrinterGfx::DrawMask (const Rectangle& rDest, const Rectangle& rSrc, + const PrinterBmp &/*rBitmap*/, PrinterColor& /*rMaskColor*/) +{ + double fScaleX = (double)rDest.GetWidth() / (double)rSrc.GetWidth(); + double fScaleY = (double)rDest.GetHeight() / (double)rSrc.GetHeight(); + + PSGSave (); + PSTranslate (rDest.BottomLeft()); + PSScale (fScaleX, fScaleY); + PSGRestore (); +} + +/* + * + * Implementation: PS Level 1 + * + */ + +void +PrinterGfx::DrawPS1GrayImage (const PrinterBmp& rBitmap, const Rectangle& rArea) +{ + sal_uInt32 nWidth = rArea.GetWidth(); + sal_uInt32 nHeight = rArea.GetHeight(); + + sal_Char pGrayImage [512]; + sal_Int32 nChar = 0; + + // image header + nChar += psp::getValueOf (nWidth, pGrayImage + nChar); + nChar += psp::appendStr (" ", pGrayImage + nChar); + nChar += psp::getValueOf (nHeight, pGrayImage + nChar); + nChar += psp::appendStr (" 8 ", pGrayImage + nChar); + nChar += psp::appendStr ("[ 1 0 0 1 0 ", pGrayImage + nChar); + nChar += psp::getValueOf (nHeight, pGrayImage + nChar); + nChar += psp::appendStr ("]", pGrayImage + nChar); + nChar += psp::appendStr (" {currentfile ", pGrayImage + nChar); + nChar += psp::getValueOf (nWidth, pGrayImage + nChar); + nChar += psp::appendStr (" string readhexstring pop}\n", pGrayImage + nChar); + nChar += psp::appendStr ("image\n", pGrayImage + nChar); + + WritePS (mpPageBody, pGrayImage); + + // image body + HexEncoder* pEncoder = new HexEncoder (mpPageBody); + + for (long nRow = rArea.Top(); nRow <= rArea.Bottom(); nRow++) + { + for (long nColumn = rArea.Left(); nColumn <= rArea.Right(); nColumn++) + { + sal_uChar nByte = rBitmap.GetPixelGray (nRow, nColumn); + pEncoder->EncodeByte (nByte); + } + } + + delete pEncoder; + + WritePS (mpPageBody, "\n"); +} + +/* + * + * Implementation: PS Level 2 + * + */ + +void +PrinterGfx::writePS2ImageHeader (const Rectangle& rArea, psp::ImageType nType) +{ + sal_Int32 nChar = 0; + sal_Char pImage [512]; + + sal_Int32 nDictType = 0; + switch (nType) + { + case psp::TrueColorImage: nDictType = 0; break; + case psp::PaletteImage: nDictType = 1; break; + case psp::GrayScaleImage: nDictType = 2; break; + case psp::MonochromeImage: nDictType = 3; break; + default: break; + } + sal_Int32 nCompressType = mbCompressBmp ? 1 : 0; + + nChar += psp::getValueOf (rArea.GetWidth(), pImage + nChar); + nChar += psp::appendStr (" ", pImage + nChar); + nChar += psp::getValueOf (rArea.GetHeight(), pImage + nChar); + nChar += psp::appendStr (" ", pImage + nChar); + nChar += psp::getValueOf (nDictType, pImage + nChar); + nChar += psp::appendStr (" ", pImage + nChar); + nChar += psp::getValueOf (nCompressType, pImage + nChar); + nChar += psp::appendStr (" psp_imagedict image\n", pImage + nChar); + + WritePS (mpPageBody, pImage); +} + +void +PrinterGfx::writePS2Colorspace(const PrinterBmp& rBitmap, psp::ImageType nType) +{ + switch (nType) + { + case psp::GrayScaleImage: + + WritePS (mpPageBody, "/DeviceGray setcolorspace\n"); + break; + + case psp::TrueColorImage: + + WritePS (mpPageBody, "/DeviceRGB setcolorspace\n"); + break; + + case psp::MonochromeImage: + case psp::PaletteImage: + { + + sal_Int32 nChar = 0; + sal_Char pImage [4096]; + + const sal_uInt32 nSize = rBitmap.GetPaletteEntryCount(); + + nChar += psp::appendStr ("[/Indexed /DeviceRGB ", pImage + nChar); + nChar += psp::getValueOf (nSize - 1, pImage + nChar); + if (mbCompressBmp) + nChar += psp::appendStr ("\npsp_lzwstring\n", pImage + nChar); + else + nChar += psp::appendStr ("\npsp_ascii85string\n", pImage + nChar); + WritePS (mpPageBody, pImage); + + ByteEncoder* pEncoder = mbCompressBmp ? new LZWEncoder(mpPageBody) + : new Ascii85Encoder(mpPageBody); + for (sal_uInt32 i = 0; i < nSize; i++) + { + PrinterColor aColor = rBitmap.GetPaletteColor(i); + + pEncoder->EncodeByte (aColor.GetRed()); + pEncoder->EncodeByte (aColor.GetGreen()); + pEncoder->EncodeByte (aColor.GetBlue()); + } + delete pEncoder; + + WritePS (mpPageBody, "pop ] setcolorspace\n"); + } + break; + default: break; + } +} + +void +PrinterGfx::DrawPS2GrayImage (const PrinterBmp& rBitmap, const Rectangle& rArea) +{ + writePS2Colorspace(rBitmap, psp::GrayScaleImage); + writePS2ImageHeader(rArea, psp::GrayScaleImage); + + ByteEncoder* pEncoder = mbCompressBmp ? new LZWEncoder(mpPageBody) + : new Ascii85Encoder(mpPageBody); + + for (long nRow = rArea.Top(); nRow <= rArea.Bottom(); nRow++) + { + for (long nColumn = rArea.Left(); nColumn <= rArea.Right(); nColumn++) + { + sal_uChar nByte = rBitmap.GetPixelGray (nRow, nColumn); + pEncoder->EncodeByte (nByte); + } + } + + delete pEncoder; +} + +void +PrinterGfx::DrawPS2MonoImage (const PrinterBmp& rBitmap, const Rectangle& rArea) +{ + writePS2Colorspace(rBitmap, psp::MonochromeImage); + writePS2ImageHeader(rArea, psp::MonochromeImage); + + ByteEncoder* pEncoder = mbCompressBmp ? new LZWEncoder(mpPageBody) + : new Ascii85Encoder(mpPageBody); + + for (long nRow = rArea.Top(); nRow <= rArea.Bottom(); nRow++) + { + long nBitPos = 0; + sal_uChar nBit = 0; + sal_uChar nByte = 0; + + for (long nColumn = rArea.Left(); nColumn <= rArea.Right(); nColumn++) + { + nBit = rBitmap.GetPixelIdx (nRow, nColumn); + nByte |= nBit << (7 - nBitPos); + + if (++nBitPos == 8) + { + pEncoder->EncodeByte (nByte); + nBitPos = 0; + nByte = 0; + } + } + // keep the row byte aligned + if (nBitPos != 0) + pEncoder->EncodeByte (nByte); + } + + delete pEncoder; +} + +void +PrinterGfx::DrawPS2PaletteImage (const PrinterBmp& rBitmap, const Rectangle& rArea) +{ + writePS2Colorspace(rBitmap, psp::PaletteImage); + writePS2ImageHeader(rArea, psp::PaletteImage); + + ByteEncoder* pEncoder = mbCompressBmp ? new LZWEncoder(mpPageBody) + : new Ascii85Encoder(mpPageBody); + + for (long nRow = rArea.Top(); nRow <= rArea.Bottom(); nRow++) + { + for (long nColumn = rArea.Left(); nColumn <= rArea.Right(); nColumn++) + { + sal_uChar nByte = rBitmap.GetPixelIdx (nRow, nColumn); + pEncoder->EncodeByte (nByte); + } + } + + delete pEncoder; +} + +void +PrinterGfx::DrawPS2TrueColorImage (const PrinterBmp& rBitmap, const Rectangle& rArea) +{ + writePS2Colorspace(rBitmap, psp::TrueColorImage); + writePS2ImageHeader(rArea, psp::TrueColorImage); + + ByteEncoder* pEncoder = mbCompressBmp ? new LZWEncoder(mpPageBody) + : new Ascii85Encoder(mpPageBody); + + for (long nRow = rArea.Top(); nRow <= rArea.Bottom(); nRow++) + { + for (long nColumn = rArea.Left(); nColumn <= rArea.Right(); nColumn++) + { + PrinterColor aColor = rBitmap.GetPixelRGB (nRow, nColumn); + pEncoder->EncodeByte (aColor.GetRed()); + pEncoder->EncodeByte (aColor.GetGreen()); + pEncoder->EncodeByte (aColor.GetBlue()); + } + } + + delete pEncoder; +} + +} /* namespace psp */ |