1 /************************************************************** 2 * 3 * Licensed to the Apache Software Foundation (ASF) under one 4 * or more contributor license agreements. See the NOTICE file 5 * distributed with this work for additional information 6 * regarding copyright ownership. The ASF licenses this file 7 * to you under the Apache License, Version 2.0 (the 8 * "License"); you may not use this file except in compliance 9 * with the License. You may obtain a copy of the License at 10 * 11 * http://www.apache.org/licenses/LICENSE-2.0 12 * 13 * Unless required by applicable law or agreed to in writing, 14 * software distributed under the License is distributed on an 15 * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY 16 * KIND, either express or implied. See the License for the 17 * specific language governing permissions and limitations 18 * under the License. 19 * 20 *************************************************************/ 21 22 23 24 // MARKER(update_precomp.py): autogen include statement, do not remove 25 #include "precompiled_vcl.hxx" 26 27 #include <tools/debug.hxx> 28 29 #include <fontsubset.hxx> 30 #include <sft.hxx> 31 32 // ==================================================================== 33 34 FontSubsetInfo::FontSubsetInfo() 35 : m_nAscent( 0) 36 , m_nDescent( 0) 37 , m_nCapHeight( 0) 38 , m_nFontType( FontSubsetInfo::NO_FONT) 39 , mpInFontBytes( NULL) 40 , mnInByteLength( 0) 41 , meInFontType( FontSubsetInfo::NO_FONT) 42 , mpSftTTFont( NULL) 43 {} 44 45 // -------------------------------------------------------------------- 46 47 FontSubsetInfo::~FontSubsetInfo() 48 {} 49 50 // -------------------------------------------------------------------- 51 52 // prepare subsetting for fonts where the input font file is mapped 53 bool FontSubsetInfo::LoadFont( 54 FontSubsetInfo::FontType eInFontType, 55 const unsigned char* pInFontBytes, int nInByteLength) 56 { 57 DBG_ASSERT( (mpSftTTFont == NULL), "Subset from SFT and from mapped font-file requested"); 58 meInFontType = eInFontType; 59 mpInFontBytes = pInFontBytes; 60 mnInByteLength = nInByteLength; 61 return (mnInByteLength > 0); 62 } 63 64 // -------------------------------------------------------------------- 65 66 // prepare subsetting for fonts that are known to the SFT-parser 67 bool FontSubsetInfo::LoadFont( vcl::_TrueTypeFont* pSftTTFont ) 68 { 69 DBG_ASSERT( (mpInFontBytes == NULL), "Subset from SFT and from mapped font-file requested"); 70 mpSftTTFont = pSftTTFont; 71 meInFontType = ANY_SFNT; 72 return (mpSftTTFont == NULL); 73 } 74 75 // -------------------------------------------------------------------- 76 77 bool FontSubsetInfo::CreateFontSubset( 78 int nReqFontTypeMask, 79 FILE* pOutFile, const char* pReqFontName, 80 const long* pReqGlyphIds, const sal_uInt8* pReqEncodedIds, int nReqGlyphCount, 81 sal_Int32* pOutGlyphWidths) 82 { 83 // prepare request details needed by all underlying subsetters 84 mnReqFontTypeMask = nReqFontTypeMask; 85 mpOutFile = pOutFile; 86 mpReqFontName = pReqFontName; 87 mpReqGlyphIds = pReqGlyphIds; 88 mpReqEncodedIds = pReqEncodedIds; 89 mnReqGlyphCount = nReqGlyphCount; 90 91 // TODO: move the glyphid/encid/notdef reshuffling from the callers to here 92 93 // dispatch to underlying subsetters 94 bool bOK = false; 95 96 // TODO: better match available input-type to possible subset-types 97 switch( meInFontType) { 98 case SFNT_TTF: 99 case SFNT_CFF: 100 case ANY_SFNT: 101 bOK = CreateFontSubsetFromSfnt( pOutGlyphWidths); 102 break; 103 case CFF_FONT: 104 bOK = CreateFontSubsetFromCff( pOutGlyphWidths); 105 break; 106 case TYPE1_PFA: 107 case TYPE1_PFB: 108 case ANY_TYPE1: 109 bOK = CreateFontSubsetFromType1( pOutGlyphWidths); 110 break; 111 // fall trough 112 case NO_FONT: 113 // fall trough 114 default: 115 DBG_ERROR( "unhandled type in CreateFontSubset()"); 116 break; 117 } 118 119 return bOK; 120 } 121 122 // -------------------------------------------------------------------- 123 124 // TODO: move function to sft.cxx to replace dummy implementation 125 bool FontSubsetInfo::CreateFontSubsetFromSfnt( sal_Int32* pOutGlyphWidths ) 126 { 127 // handle SFNT_CFF fonts 128 int nCffLength = 0; 129 const sal_uInt8* pCffBytes = NULL; 130 if( GetSfntTable( mpSftTTFont, O_CFF, &pCffBytes, &nCffLength)) 131 { 132 LoadFont( CFF_FONT, pCffBytes, nCffLength); 133 const bool bOK = CreateFontSubsetFromCff( pOutGlyphWidths); 134 return bOK; 135 } 136 137 // handle SFNT_TTF fonts 138 // by forwarding the subset request to AG's sft subsetter 139 #if 1 // TODO: remove conversion tp 16bit glyphids when sft-subsetter has been updated 140 sal_uInt16 aShortGlyphIds[256]; 141 for( int i = 0; i < mnReqGlyphCount; ++i) 142 aShortGlyphIds[i] = (sal_uInt16)mpReqGlyphIds[i]; 143 // remove const_cast when sft-subsetter is const-correct 144 sal_uInt8* pEncArray = const_cast<sal_uInt8*>( mpReqEncodedIds ); 145 #endif 146 int nSFTErr = vcl::SF_BADARG; 147 if( (mnReqFontTypeMask & TYPE42_FONT) != 0 ) 148 { 149 nSFTErr = CreateT42FromTTGlyphs( mpSftTTFont, mpOutFile, mpReqFontName, 150 aShortGlyphIds, pEncArray, mnReqGlyphCount ); 151 } 152 else if( (mnReqFontTypeMask & TYPE3_FONT) != 0 ) 153 { 154 nSFTErr = CreateT3FromTTGlyphs( mpSftTTFont, mpOutFile, mpReqFontName, 155 aShortGlyphIds, pEncArray, mnReqGlyphCount, 156 0 /* 0 = horizontal, 1 = vertical */ ); 157 } 158 else if( (mnReqFontTypeMask & SFNT_TTF) != 0 ) 159 { 160 // TODO: use CreateTTFromTTGlyphs() 161 // TODO: move functionality from callers here 162 } 163 164 return (nSFTErr != vcl::SF_OK); 165 } 166 167 // -------------------------------------------------------------------- 168 169 // TODO: replace dummy implementation 170 bool FontSubsetInfo::CreateFontSubsetFromType1( sal_Int32* pOutGlyphWidths) 171 { 172 #if 0 173 // TODO: replace dummy implementation when someone needs this 174 #else 175 (void)pOutGlyphWidths; 176 fprintf(stderr,"CreateFontSubsetFromType1: replace dummy implementation\n"); 177 #endif 178 return false; 179 } 180 181 // ==================================================================== 182 183