| | 1 | // © 2016 and later: Unicode, Inc. and others. |
| | 2 | // License & terms of use: http://www.unicode.org/copyright.html |
| | 3 | /*************************************************************************** |
| | 4 | * |
| | 5 | * Copyright (C) 1998-2002, International Business Machines |
| | 6 | * Corporation and others. All Rights Reserved. |
| | 7 | * |
| | 8 | ************************************************************************/ |
| | 9 | |
| | 10 | |
| | 11 | #ifndef __FONTOBJECT_H |
| | 12 | #define __FONTOBJECT_H |
| | 13 | |
| | 14 | #include <stdio.h> |
| | 15 | |
| | 16 | #include "LETypes.h" |
| | 17 | |
| | 18 | |
| | 19 | #ifndef ANY_NUMBER |
| | 20 | #define ANY_NUMBER 1 |
| | 21 | #endif |
| | 22 | |
| | 23 | struct DirectoryEntry |
| | 24 | { |
| | 25 | le_uint32 tag; |
| | 26 | le_uint32 checksum; |
| | 27 | le_uint32 offset; |
| | 28 | le_uint32 length; |
| | 29 | }; |
| | 30 | |
| | 31 | struct SFNTDirectory |
| | 32 | { |
| | 33 | le_uint32 scalerType; |
| | 34 | le_uint16 numTables; |
| | 35 | le_uint16 searchRange; |
| | 36 | le_uint16 entrySelector; |
| | 37 | le_uint16 rangeShift; |
| | 38 | DirectoryEntry tableDirectory[ANY_NUMBER]; |
| | 39 | }; |
| | 40 | |
| | 41 | |
| | 42 | struct CMAPEncodingSubtableHeader |
| | 43 | { |
| | 44 | le_uint16 platformID; |
| | 45 | le_uint16 platformSpecificID; |
| | 46 | le_uint32 encodingOffset; |
| | 47 | }; |
| | 48 | |
| | 49 | struct CMAPTable |
| | 50 | { |
| | 51 | le_uint16 version; |
| | 52 | le_uint16 numberSubtables; |
| | 53 | CMAPEncodingSubtableHeader encodingSubtableHeaders[ANY_NUMBER]; |
| | 54 | }; |
| | 55 | |
| | 56 | struct CMAPEncodingSubtable |
| | 57 | { |
| | 58 | le_uint16 format; |
| | 59 | le_uint16 length; |
| | 60 | le_uint16 language; |
| | 61 | }; |
| | 62 | |
| | 63 | struct CMAPFormat0Encoding : CMAPEncodingSubtable |
| | 64 | { |
| | 65 | le_uint8 glyphIndexArray[256]; |
| | 66 | }; |
| | 67 | |
| | 68 | struct CMAPFormat2Subheader |
| | 69 | { |
| | 70 | le_uint16 firstCode; |
| | 71 | le_uint16 entryCount; |
| | 72 | le_int16 idDelta; |
| | 73 | le_uint16 idRangeOffset; |
| | 74 | }; |
| | 75 | |
| | 76 | struct CMAPFormat2Encoding : CMAPEncodingSubtable |
| | 77 | { |
| | 78 | le_uint16 subHeadKeys[256]; |
| | 79 | CMAPFormat2Subheader subheaders[ANY_NUMBER]; |
| | 80 | }; |
| | 81 | |
| | 82 | struct CMAPFormat4Encoding : CMAPEncodingSubtable |
| | 83 | { |
| | 84 | le_uint16 segCountX2; |
| | 85 | le_uint16 searchRange; |
| | 86 | le_uint16 entrySelector; |
| | 87 | le_uint16 rangeShift; |
| | 88 | le_uint16 endCodes[ANY_NUMBER]; |
| | 89 | // le_uint16 reservedPad; |
| | 90 | // le_uint16 startCodes[ANY_NUMBER]; |
| | 91 | // le_uint16 idDelta[ANY_NUMBER]; |
| | 92 | // le_uint16 idRangeOffset[ANY_NUMBER]; |
| | 93 | // le_uint16 glyphIndexArray[ANY_NUMBER]; |
| | 94 | }; |
| | 95 | |
| | 96 | struct CMAPFormat6Encoding : CMAPEncodingSubtable |
| | 97 | { |
| | 98 | le_uint16 firstCode; |
| | 99 | le_uint16 entryCount; |
| | 100 | le_uint16 glyphIndexArray[ANY_NUMBER]; |
| | 101 | }; |
| | 102 | |
| | 103 | typedef le_int32 fixed; |
| | 104 | |
| | 105 | struct BigDate |
| | 106 | { |
| | 107 | le_uint32 bc; |
| | 108 | le_uint32 ad; |
| | 109 | }; |
| | 110 | |
| | 111 | struct HEADTable |
| | 112 | { |
| | 113 | fixed version; |
| | 114 | fixed fontRevision; |
| | 115 | le_uint32 checksumAdjustment; |
| | 116 | le_uint32 magicNumber; |
| | 117 | le_uint16 flags; |
| | 118 | le_uint16 unitsPerEm; |
| | 119 | BigDate created; |
| | 120 | BigDate modified; |
| | 121 | le_int16 xMin; |
| | 122 | le_int16 yMin; |
| | 123 | le_int16 xMax; |
| | 124 | le_int16 yMax; |
| | 125 | le_int16 lowestRecPPEM; |
| | 126 | le_int16 fontDirectionHint; |
| | 127 | le_int16 indexToLocFormat; |
| | 128 | le_int16 glyphDataFormat; |
| | 129 | }; |
| | 130 | |
| | 131 | struct MAXPTable |
| | 132 | { |
| | 133 | fixed version; |
| | 134 | le_uint16 numGlyphs; |
| | 135 | le_uint16 maxPoints; |
| | 136 | le_uint16 maxContours; |
| | 137 | le_uint16 maxComponentPoints; |
| | 138 | le_uint16 maxComponentContours; |
| | 139 | le_uint16 maxZones; |
| | 140 | le_uint16 maxTwilightPoints; |
| | 141 | le_uint16 maxStorage; |
| | 142 | le_uint16 maxFunctionDefs; |
| | 143 | le_uint16 maxInstructionDefs; |
| | 144 | le_uint16 maxStackElements; |
| | 145 | le_uint16 maxSizeOfInstructions; |
| | 146 | le_uint16 maxComponentElements; |
| | 147 | le_uint16 maxComponentDepth; |
| | 148 | }; |
| | 149 | |
| | 150 | struct HHEATable |
| | 151 | { |
| | 152 | fixed version; |
| | 153 | le_int16 ascent; |
| | 154 | le_int16 descent; |
| | 155 | le_int16 lineGap; |
| | 156 | le_uint16 advanceWidthMax; |
| | 157 | le_int16 minLeftSideBearing; |
| | 158 | le_int16 minRightSideBearing; |
| | 159 | le_int16 xMaxExtent; |
| | 160 | le_int16 caretSlopeRise; |
| | 161 | le_int16 caretSlopeRun; |
| | 162 | le_int16 caretOffset; |
| | 163 | le_int16 reserved1; |
| | 164 | le_int16 reserved2; |
| | 165 | le_int16 reserved3; |
| | 166 | le_int16 reserved4; |
| | 167 | le_int16 metricDataFormat; |
| | 168 | le_uint16 numOfLongHorMetrics; |
| | 169 | }; |
| | 170 | |
| | 171 | struct LongHorMetric |
| | 172 | { |
| | 173 | le_uint16 advanceWidth; |
| | 174 | le_int16 leftSideBearing; |
| | 175 | }; |
| | 176 | |
| | 177 | struct HMTXTable |
| | 178 | { |
| | 179 | LongHorMetric hMetrics[ANY_NUMBER]; // ANY_NUMBER = numOfLongHorMetrics from hhea table |
| | 180 | // le_int16 leftSideBearing[ANY_NUMBER]; // ANY_NUMBER = numGlyphs - numOfLongHorMetrics |
| | 181 | }; |
| | 182 | |
| | 183 | class FontObject |
| | 184 | { |
| | 185 | public: |
| | 186 | FontObject(char *fontName); |
| | 187 | ~FontObject(); |
| | 188 | |
| | 189 | void *readTable(LETag tag, le_uint32 *length); |
| | 190 | void deleteTable(void *table); |
| | 191 | |
| | 192 | LEGlyphID unicodeToGlyph(LEUnicode32 unicode); |
| | 193 | |
| | 194 | #if 0 |
| | 195 | le_uint32 unicodesToGlyphs(LEUnicode *chars, le_uint32 nChars, LEGlyphID *glyphs, |
| | 196 | le_uint32 *charIndices, le_bool rightToLeft); |
| | 197 | #endif |
| | 198 | |
| | 199 | le_uint16 getUnitsPerEM(); |
| | 200 | |
| | 201 | le_uint16 getGlyphAdvance(LEGlyphID glyph); |
| | 202 | |
| | 203 | private: |
| | 204 | FontObject(); |
| | 205 | |
| | 206 | DirectoryEntry *findTable(LETag tag); |
| | 207 | CMAPEncodingSubtable *findCMAP(le_uint16 platformID, le_uint16 platformSpecificID); |
| | 208 | void initUnicodeCMAP(); |
| | 209 | |
| | 210 | SFNTDirectory *directory; |
| | 211 | le_uint16 numTables; |
| | 212 | le_uint16 searchRange; |
| | 213 | le_uint16 entrySelector; |
| | 214 | le_uint16 rangeShift; |
| | 215 | |
| | 216 | CMAPTable *cmapTable; |
| | 217 | le_uint16 cmSegCount; |
| | 218 | le_uint16 cmSearchRange; |
| | 219 | le_uint16 cmEntrySelector; |
| | 220 | le_uint16 cmRangeShift; |
| | 221 | le_uint16 *cmEndCodes; |
| | 222 | le_uint16 *cmStartCodes; |
| | 223 | le_uint16 *cmIdDelta; |
| | 224 | le_uint16 *cmIdRangeOffset; |
| | 225 | |
| | 226 | HEADTable *headTable; |
| | 227 | |
| | 228 | HMTXTable *hmtxTable; |
| | 229 | le_uint16 numGlyphs; |
| | 230 | le_uint16 numOfLongHorMetrics; |
| | 231 | |
| | 232 | FILE *file; |
| | 233 | |
| | 234 | }; |
| | 235 | |
| | 236 | #endif |
| | 237 | |
projects / apple / icu.git / blame_incremental