/* * 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 * * Unless required by applicable law or agreed to in writing, software * distributed under the License is distributed on an "AS IS" BASIS, * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. * See the License for the specific language governing permissions and * limitations under the License. */ /** * @author Dmitriy S. Matveev */ #ifndef __TABLES_H__ #define __TABLES_H__ #include "TTCurve.h" #include "TTFont.h" #include "TypeDefinition.h" #define CMAP_TABLE "cmap" /* character to glyph mapping */ #define GLYF_TABLE "glyf" /* glyph data */ #define HEAD_TABLE "head" /* font header */ #define HHEA_TABLE "hhea" /* horizontal header */ #define HMTX_TABLE "hmtx" /* horizontal metrics */ #define LOCA_TABLE "loca" /* index to location */ #define MAXP_TABLE "maxp" /* maximum profile */ #define NAME_TABLE "name" /* naming */ #define POST_TABLE "post" /* PostScript */ #define TTCF_TABLE "ttcf" /* TrueType font collection */ #define KERN_TABLE "kern" /* Kerning table */ #define BASE_TABLE "BASE" /* Baseline table */ #define OS2_TABLE "OS/2" /* OS-metrics table */ #define WINDOWS_PLATFORM_ID 3 /* Windows platform identifier */ #define FAMILY_NAME_ID 1 /* Family name identifier */ #define SUBFAMILY_NAME_ID 2 /* Family name identifier */ #define FULL_NAME_ID 4 /* Family name identifier */ #define POSTSCRIPT_NAME_ID 6 /* Family name identifier */ #define SYMBOL_ENCODING 0 #define UNICODE_ENCODING 1 #define SHIFT_JIS_ENCODING 2 #define BIG5_ENCODING 3 #define PRC_ENCODING 4 typedef flong Fixed; typedef long long LONGDT; enum { ON_CURVE = 0x01, // on curve or not REPEAT = 0x08, // next byte specifies the number of //additional times this set of flags is to be repeated X_POSITIVE = 0x12, // positive x-value X_NEGATIVE = 0x02, // negative x-value X_SAME = 0x10, // x is same X_DWORD = 0x00, Y_POSITIVE = 0x24, // positive y-value Y_NEGATIVE = 0x04, // negative y-value Y_SAME = 0x20, // y is same Y_DWORD = 0x00, }; /* From Win GDI typedef struct { ufchar bFamilyType; ufchar bSerifStyle; ufchar bWeight; ufchar bProportion; ufchar bContrast; ufchar bStrokeVariation; ufchar bArmStyle; ufchar bLetterform; ufchar bMidline; ufchar bXHeight; } PANOSE; */ typedef struct { Fixed version; ufshort num_tables; ufshort search_range; ufshort entry_selector; ufshort range_shift; } Table_Offset; typedef struct { fchar tag[4]; uflong checkSum; uflong offset; uflong length; } Table_Directory; typedef struct { ufshort platformID; ufshort encodingID; ufshort languageID; ufshort nameID; ufshort string_length; ufshort string_offset; } Name_Entry; typedef struct { ufshort format; ufshort num_name_records; ufshort storage_offset; Name_Entry name_record[1]; } Table_name; /* TrueType 'maxp' table */ typedef struct { Fixed version; ufshort numGlyphs; // number of Glyphs ufshort maxPoints; ufshort maxContours; ufshort maxCompositePoints; ufshort maxCompositeContours; ufshort maxZones; ufshort maxTwilightPoints; ufshort maxStorage; ufshort maxFunctionDefs; ufshort maxInstructionDefs; ufshort maxStackElements; ufshort maxSizeOfInstructions; ufshort maxComponentElements; ufshort maxComponentDepth; } Table_maxp; /* TrueType Font Header table */ typedef struct { Fixed table_version; Fixed font_revision; uflong checksum_adjust; uflong magic_number; ufshort flags; ufshort units_per_EM; LONGDT created; LONGDT modified; fshort xMin; fshort yMin; fshort xMax; fshort yMax; ufshort mac_style; ufshort lowest_rec_PPEM; fshort font_direction; fshort index_to_loc_format; // format of 'loca' table fshort glyph_data_format; } Table_head; typedef struct { Fixed table_version; fshort ascender; /* typographic ascent */ fshort descender; /* typographic descent */ fshort line_gap; /* typographic line gap */ ufshort advance_width_max; /* Maximum advance width value in 'hmtx' table */ fshort min_left_sidebearing; fshort min_right_sidebearing; /* Min(aw - lsb - (xMax - xMin)) */ fshort xMaxExtent; /* Max(lsb + (xMax - xMin)) */ fshort caret_slope_rise; fshort caret_slope_run; fshort first_reserved; fshort second_reserved; fshort third_reserved; fshort fourth_reserved; fshort fifth_reserved; fshort metric_data_format; ufshort number_of_hMetrics; } Table_hhea; typedef struct { ufshort table_version; fshort xAvgCharWidth; ufshort usWeightClass; ufshort usWidthClass; fshort fsType; fshort ySubscriptXSize; fshort ySubscriptYSize; fshort ySubscriptXOffset; fshort ySubscriptYOffset; fshort ySuperscriptXSize; fshort ySuperscriptYSize; fshort ySuperscriptXOffset; fshort ySuperscriptYOffset; fshort yStrikeoutSize; fshort yStrikeoutPosition; fshort sFamilyClass; // PANOSE panose; ufchar panose[10]; uflong ulUnicodeRange1; uflong ulUnicodeRange2; uflong ulUnicodeRange3; uflong ulUnicodeRange4; ufchar achVendID[4]; ufshort fsSelection; ufshort usFirstCharIndex; ufshort usLastCharIndex; ufshort sTypoAscender; ufshort sTypoDescender; ufshort sTypoLineGap; ufshort sWinAscent; ufshort sWinDescent; uflong ulCodePageRange1; uflong ulCodePageRange2; } Table_os2; typedef struct { ufshort platform; //identifier of platform ufshort encodingID; //identifier fo encoding uflong table_offset; //offset of the encoding table } Cmap_Entry; typedef struct { ufshort table_version; // =0 ufshort numSubTables; //number subtables Cmap_Entry tableHeaders[1]; //headers of subtables } Table_cmap; typedef struct { Fixed format; //format type Fixed italic_angle; fshort underlineOffset; fshort underlineThickness; uflong isFixedPitch; uflong minMemType42; uflong maxMemType42; uflong minMemType1; uflong maxMemType1; } Table_post; /* first part of the encoding table identical for all format of them */ typedef struct { ufshort format; ufshort length; //length in bytes ufshort version; } Table_encode_header; /* typedef struct { ufshort format; // =0,2,4,6 ufshort length; // size ufshort version; ufchar map[256]; } Table_encode_0; typedef struct { // ufshort segCountX2; // 2 x segCount ufshort search_range; // 2 x (2**floor(log_2(segCount))) ufshort entry_selector; // log_2(search_range/2) ufshort range_shift; // 2 x segCount - search_range ufshort end_count[1]; // end characterCode for each segment, last =0xFFFF, length = segCount ufshort reservedPad; // = 0 ufshort start_count[1]; // Start character code for each segment, length = segCount ufshort idDelta[1]; // Delta for all character codes in segment, length = segCount ufshort idRangeOffset[1]; // Offsets into glyphIdArray or 0, length = segCount ufshort glyphIdArray[]; // Glyph index array (arbitrary length) } Table_encode_4; */ typedef struct { fshort number_of_contours; // <0 for composite glyph fshort xMin; fshort yMin; fshort xMax; fshort yMax; } Glyph_header; template // n = number_of_contours from Glyph_header struct SimpleGlyphDescription { ufshort endPtsOfContours[n]; ufshort instruction_length; // ufchar instructions[instruction_length]; // ufchar flags[n]; // ufchar(fshort) xCoordinates[n]; // ufchar(fshort) yCoordinates[n]; }; fint parseCmapTable(FILE* tt_file, TableEncode* te); fint parseNameTable(FILE* tt_file, fwchar_t** familyName, fwchar_t** psName, StyleName* fontStyle); fint parseHeadTable(FILE* tt_file, ffloat* bbox, fshort* format, ufshort* unitsPerEm); fint parseHheaTable(FILE* tt_file, ufshort* numOfHMetrics, ffloat* ascent, ffloat* descent, ffloat* lineGap); fint parseMaxpTable(FILE* tt_file, ufshort *numGlyphs); fint parseLocaTable(FILE* tt_file, GlyphOffsets* gOffsets, ufshort numGlyphs); fint parseOs2Table(FILE* tt_file, ffloat* strikeOutSize, ffloat* strikeOutOffset); fint parsePostTable(FILE* tt_file, fshort* uOffset, fshort* uThickness); fint parseGlyphData(FILE* tt_file, const GlyphOffsets gO, ufshort numGlyphs, ufshort glyphIndex, TTCurve *curve, fshort* bRect, ffloat transform); fint parseHmtxTable(FILE* tt_file, ufshort numOfHMetrics, HMetrics** hm); bool isCompositeGlyph(FILE* tt_file, const GlyphOffsets gO, ufshort numGlyphs, ufshort glyphIndex); #endif