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/* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*- */
/*
* This file is part of the LibreOffice project.
*
* This Source Code Form is subject to the terms of the Mozilla Public
* License, v. 2.0. If a copy of the MPL was not distributed with this
* file, You can obtain one at http://mozilla.org/MPL/2.0/.
*
* This file incorporates work covered by the following license notice:
*
* Licensed to the Apache Software Foundation (ASF) under one or more
* contributor license agreements. See the NOTICE file distributed
* with this work for additional information regarding copyright
* ownership. The ASF licenses this file to you under the Apache
* License, Version 2.0 (the "License"); you may not use this file
* except in compliance with the License. You may obtain a copy of
* the License at http://www.apache.org/licenses/LICENSE-2.0 .
*/
#include <tools/debug.hxx>
#include <fontsubset.hxx>
#include <sft.hxx>
FontSubsetInfo::FontSubsetInfo()
: m_nAscent( 0)
, m_nDescent( 0)
, m_nCapHeight( 0)
, m_nFontType( FontSubsetInfo::NO_FONT)
, mpInFontBytes( NULL)
, mnInByteLength( 0)
, 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 sal_GlyphId* 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:
OSL_FAIL( "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)
{
(void)pOutGlyphWidths;
fprintf(stderr,"CreateFontSubsetFromType1: replace dummy implementation\n");
return false;
}
/* vim:set shiftwidth=4 softtabstop=4 expandtab: */
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