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 // MARKER(update_precomp.py): autogen include statement, do not remove 23 #include "precompiled_vcl.hxx" 24 25 #include <tools/debug.hxx> 26 27 #include <fontsubset.hxx> 28 #include <sft.hxx> 29 30 // ==================================================================== 31 32 FontSubsetInfo::FontSubsetInfo() 33 : m_nAscent( 0) 34 , m_nDescent( 0) 35 , m_nCapHeight( 0) 36 , m_nFontType( FontSubsetInfo::NO_FONT) 37 , mpInFontBytes( NULL) 38 , mnInByteLength( 0) 39 , meInFontType( FontSubsetInfo::NO_FONT) 40 , mpSftTTFont( NULL) 41 {} 42 43 // -------------------------------------------------------------------- 44 45 FontSubsetInfo::~FontSubsetInfo() 46 {} 47 48 // -------------------------------------------------------------------- 49 50 // prepare subsetting for fonts where the input font file is mapped 51 bool FontSubsetInfo::LoadFont( 52 FontSubsetInfo::FontType eInFontType, 53 const unsigned char* pInFontBytes, int nInByteLength) 54 { 55 DBG_ASSERT( (mpSftTTFont == NULL), "Subset from SFT and from mapped font-file requested"); 56 meInFontType = eInFontType; 57 mpInFontBytes = pInFontBytes; 58 mnInByteLength = nInByteLength; 59 return (mnInByteLength > 0); 60 } 61 62 // -------------------------------------------------------------------- 63 64 // prepare subsetting for fonts that are known to the SFT-parser 65 bool FontSubsetInfo::LoadFont( vcl::_TrueTypeFont* pSftTTFont ) 66 { 67 DBG_ASSERT( (mpInFontBytes == NULL), "Subset from SFT and from mapped font-file requested"); 68 mpSftTTFont = pSftTTFont; 69 meInFontType = ANY_SFNT; 70 return (mpSftTTFont == NULL); 71 } 72 73 // -------------------------------------------------------------------- 74 75 bool FontSubsetInfo::CreateFontSubset( 76 int nReqFontTypeMask, 77 FILE* pOutFile, const char* pReqFontName, 78 const sal_GlyphId* pReqGlyphIds, const sal_uInt8* pReqEncodedIds, int nReqGlyphCount, 79 sal_Int32* pOutGlyphWidths) 80 { 81 // prepare request details needed by all underlying subsetters 82 mnReqFontTypeMask = nReqFontTypeMask; 83 mpOutFile = pOutFile; 84 mpReqFontName = pReqFontName; 85 mpReqGlyphIds = pReqGlyphIds; 86 mpReqEncodedIds = pReqEncodedIds; 87 mnReqGlyphCount = nReqGlyphCount; 88 89 // TODO: move the glyphid/encid/notdef reshuffling from the callers to here 90 91 // dispatch to underlying subsetters 92 bool bOK = false; 93 94 // TODO: better match available input-type to possible subset-types 95 switch( meInFontType) { 96 case SFNT_TTF: 97 case SFNT_CFF: 98 case ANY_SFNT: 99 bOK = CreateFontSubsetFromSfnt( pOutGlyphWidths); 100 break; 101 case CFF_FONT: 102 bOK = CreateFontSubsetFromCff( pOutGlyphWidths); 103 break; 104 case TYPE1_PFA: 105 case TYPE1_PFB: 106 case ANY_TYPE1: 107 bOK = CreateFontSubsetFromType1( pOutGlyphWidths); 108 break; 109 // fall through 110 case NO_FONT: 111 // fall through 112 default: 113 DBG_ERROR( "unhandled type in CreateFontSubset()"); 114 break; 115 } 116 117 return bOK; 118 } 119 120 // -------------------------------------------------------------------- 121 122 // TODO: move function to sft.cxx to replace dummy implementation 123 bool FontSubsetInfo::CreateFontSubsetFromSfnt( sal_Int32* pOutGlyphWidths ) 124 { 125 // handle SFNT_CFF fonts 126 int nCffLength = 0; 127 const sal_uInt8* pCffBytes = NULL; 128 if( GetSfntTable( mpSftTTFont, O_CFF, &pCffBytes, &nCffLength)) 129 { 130 LoadFont( CFF_FONT, pCffBytes, nCffLength); 131 const bool bOK = CreateFontSubsetFromCff( pOutGlyphWidths); 132 return bOK; 133 } 134 135 // handle SFNT_TTF fonts 136 // by forwarding the subset request to AG's sft subsetter 137 #if 1 // TODO: remove conversion tp 16bit glyphids when sft-subsetter has been updated 138 sal_uInt16 aShortGlyphIds[256]; 139 for( int i = 0; i < mnReqGlyphCount; ++i) 140 aShortGlyphIds[i] = (sal_uInt16)mpReqGlyphIds[i]; 141 // remove const_cast when sft-subsetter is const-correct 142 sal_uInt8* pEncArray = const_cast<sal_uInt8*>( mpReqEncodedIds ); 143 #endif 144 int nSFTErr = vcl::SF_BADARG; 145 if( (mnReqFontTypeMask & TYPE42_FONT) != 0 ) 146 { 147 nSFTErr = CreateT42FromTTGlyphs( mpSftTTFont, mpOutFile, mpReqFontName, 148 aShortGlyphIds, pEncArray, mnReqGlyphCount ); 149 } 150 else if( (mnReqFontTypeMask & TYPE3_FONT) != 0 ) 151 { 152 nSFTErr = CreateT3FromTTGlyphs( mpSftTTFont, mpOutFile, mpReqFontName, 153 aShortGlyphIds, pEncArray, mnReqGlyphCount, 154 0 /* 0 = horizontal, 1 = vertical */ ); 155 } 156 else if( (mnReqFontTypeMask & SFNT_TTF) != 0 ) 157 { 158 // TODO: use CreateTTFromTTGlyphs() 159 // TODO: move functionality from callers here 160 } 161 162 return (nSFTErr != vcl::SF_OK); 163 } 164 165 // -------------------------------------------------------------------- 166 167 // TODO: replace dummy implementation 168 bool FontSubsetInfo::CreateFontSubsetFromType1( sal_Int32* pOutGlyphWidths) 169 { 170 #if 0 171 // TODO: replace dummy implementation when someone needs this 172 #else 173 (void)pOutGlyphWidths; 174 fprintf(stderr,"CreateFontSubsetFromType1: replace dummy implementation\n"); 175 #endif 176 return false; 177 } 178 179 /* vim: set noet sw=4 ts=4: */ 180