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Diffstat (limited to 'vcl/source/fontsubset/fontsubset.cxx')
| -rw-r--r-- | vcl/source/fontsubset/fontsubset.cxx | 185 |
1 files changed, 185 insertions, 0 deletions
diff --git a/vcl/source/fontsubset/fontsubset.cxx b/vcl/source/fontsubset/fontsubset.cxx new file mode 100644 index 000000000000..e203feed1645 --- /dev/null +++ b/vcl/source/fontsubset/fontsubset.cxx @@ -0,0 +1,185 @@ +/************************************************************************* + * + * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. + * + * Copyright 2008 by Sun Microsystems, Inc. + * + * 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 <vcl/fontsubset.hxx> +#include <sft.hxx> +#include <tools/debug.hxx> + +// ==================================================================== + +FontSubsetInfo::FontSubsetInfo() +: m_nAscent( 0) +, m_nDescent( 0) +, m_nCapHeight( 0) +, m_nFontType( FontSubsetInfo::NO_FONT) +, mpInFontBytes( NULL) +, mnInByteLength( NULL) +, meInFontType( FontSubsetInfo::NO_FONT) +, mpSftTTFont( NULL) +{} + +// -------------------------------------------------------------------- + +FontSubsetInfo::~FontSubsetInfo() +{} + +// -------------------------------------------------------------------- + +// prepare subsetting for fonts where the input font file is mapped +bool FontSubsetInfo::LoadFont( + FontSubsetInfo::FontType eInFontType, + const unsigned char* pInFontBytes, int nInByteLength) +{ + DBG_ASSERT( (mpSftTTFont == NULL), "Subset from SFT and from mapped font-file requested"); + meInFontType = eInFontType; + mpInFontBytes = pInFontBytes; + mnInByteLength = nInByteLength; + return (mnInByteLength > 0); +} + +// -------------------------------------------------------------------- + +// prepare subsetting for fonts that are known to the SFT-parser +bool FontSubsetInfo::LoadFont( vcl::_TrueTypeFont* pSftTTFont ) +{ + DBG_ASSERT( (mpInFontBytes == NULL), "Subset from SFT and from mapped font-file requested"); + mpSftTTFont = pSftTTFont; + meInFontType = ANY_SFNT; + return (mpSftTTFont == NULL); +} + +// -------------------------------------------------------------------- + +bool FontSubsetInfo::CreateFontSubset( + int nReqFontTypeMask, + FILE* pOutFile, const char* pReqFontName, + const long* pReqGlyphIds, const sal_uInt8* pReqEncodedIds, int nReqGlyphCount, + sal_Int32* pOutGlyphWidths) +{ + // prepare request details needed by all underlying subsetters + mnReqFontTypeMask = nReqFontTypeMask; + mpOutFile = pOutFile; + mpReqFontName = pReqFontName; + mpReqGlyphIds = pReqGlyphIds; + mpReqEncodedIds = pReqEncodedIds; + mnReqGlyphCount = nReqGlyphCount; + + // TODO: move the glyphid/encid/notdef reshuffling from the callers to here + + // dispatch to underlying subsetters + bool bOK = false; + + // TODO: better match available input-type to possible subset-types + switch( meInFontType) { + case SFNT_TTF: + case SFNT_CFF: + case ANY_SFNT: + bOK = CreateFontSubsetFromSfnt( pOutGlyphWidths); + break; + case CFF_FONT: + bOK = CreateFontSubsetFromCff( pOutGlyphWidths); + break; + case TYPE1_PFA: + case TYPE1_PFB: + case ANY_TYPE1: + bOK = CreateFontSubsetFromType1( pOutGlyphWidths); + break; + // fall trough + case NO_FONT: + // fall trough + default: + DBG_ERROR( "unhandled type in CreateFontSubset()"); + break; + } + + return bOK; +} + +// -------------------------------------------------------------------- + +// TODO: move function to sft.cxx to replace dummy implementation +bool FontSubsetInfo::CreateFontSubsetFromSfnt( sal_Int32* pOutGlyphWidths ) +{ + // handle SFNT_CFF fonts + int nCffLength = 0; + const sal_uInt8* pCffBytes = NULL; + if( GetSfntTable( mpSftTTFont, O_CFF, &pCffBytes, &nCffLength)) + { + LoadFont( CFF_FONT, pCffBytes, nCffLength); + const bool bOK = CreateFontSubsetFromCff( pOutGlyphWidths); + return bOK; + } + + // handle SFNT_TTF fonts + // by forwarding the subset request to AG's sft subsetter +#if 1 // TODO: remove conversion tp 16bit glyphids when sft-subsetter has been updated + sal_uInt16 aShortGlyphIds[256]; + for( int i = 0; i < mnReqGlyphCount; ++i) + aShortGlyphIds[i] = (sal_uInt16)mpReqGlyphIds[i]; + // remove const_cast when sft-subsetter is const-correct + sal_uInt8* pEncArray = const_cast<sal_uInt8*>( mpReqEncodedIds ); +#endif + int nSFTErr = vcl::SF_BADARG; + if( (mnReqFontTypeMask & TYPE42_FONT) != 0 ) + { + nSFTErr = CreateT42FromTTGlyphs( mpSftTTFont, mpOutFile, mpReqFontName, + aShortGlyphIds, pEncArray, mnReqGlyphCount ); + } + else if( (mnReqFontTypeMask & TYPE3_FONT) != 0 ) + { + nSFTErr = CreateT3FromTTGlyphs( mpSftTTFont, mpOutFile, mpReqFontName, + aShortGlyphIds, pEncArray, mnReqGlyphCount, + 0 /* 0 = horizontal, 1 = vertical */ ); + } + else if( (mnReqFontTypeMask & SFNT_TTF) != 0 ) + { + // TODO: use CreateTTFromTTGlyphs() + // TODO: move functionality from callers here + } + + return (nSFTErr != vcl::SF_OK); +} + +// -------------------------------------------------------------------- + +// TODO: replace dummy implementation +bool FontSubsetInfo::CreateFontSubsetFromType1( sal_Int32* pOutGlyphWidths) +{ +#if 0 + // TODO: replace dummy implementation when someone needs this +#else + (void)pOutGlyphWidths; + fprintf(stderr,"CreateFontSubsetFromType1: replace dummy implementation\n"); +#endif + return false; +} + +// ==================================================================== + |