freetype1/lib/tttables.h

   1 /*******************************************************************
   2  *
   3  *  tttables.h                                                  1.1
   4  *
   5  *    TrueType Tables structures and handling (specification).
   6  *
   7  *  Copyright 1996-1999 by
   8  *  David Turner, Robert Wilhelm, and Werner Lemberg.
   9  *
  10  *  This file is part of the FreeType project, and may only be used
  11  *  modified and distributed under the terms of the FreeType project
  12  *  license, LICENSE.TXT. By continuing to use, modify, or distribute
  13  *  this file you indicate that you have read the license and
  14  *  understand and accept it fully.
  15  *
  16  ******************************************************************/
  17
  18 #ifndef TTTABLES_H
  19 #define TTTABLES_H
  20
  21 #include "ttconfig.h"
  22 #include "tttypes.h"
  23
  24 #ifdef __cplusplus
  25   extern "C" {
  26 #endif
  27
  28   /***********************************************************************/
  29   /*                                                                     */
  30   /*                      TrueType Table Types                           */
  31   /*                                                                     */
  32   /***********************************************************************/
  33
  34   /* TrueType Collection Header */
  35
  36   struct  TTTCHeader_
  37   {
  38     ULong     Tag;
  39     TT_Fixed  version;
  40     ULong     DirCount;
  41     PULong    TableDirectory;
  42   };
  43
  44   typedef struct TTTCHeader_  TTTCHeader;
  45   typedef TTTCHeader*         PTTCHeader;
  46
  47
  48   /* TrueType Table Directory type */
  49
  50   struct  TTableDir_
  51   {
  52     TT_Fixed  version;      /* should be 0x10000 */
  53     UShort    numTables;    /* number of tables  */
  54
  55     UShort  searchRange;    /* These parameters are only used  */
  56     UShort  entrySelector;  /* for a dichotomy search in the   */
  57     UShort  rangeShift;     /* directory. We ignore them.      */
  58   };
  59
  60   typedef struct TTableDir_  TTableDir;
  61   typedef TTableDir*         PTableDir;
  62
  63
  64   /* The 'TableDir' is followed by 'numTables' TableDirEntries */
  65
  66   struct  TTableDirEntry_
  67   {
  68     ULong  Tag;        /*        table type */
  69     ULong  CheckSum;   /*    table checksum */
  70     ULong  Offset;     /* table file offset */
  71     ULong  Length;     /*      table length */
  72   };
  73
  74   typedef struct TTableDirEntry_  TTableDirEntry;
  75   typedef TTableDirEntry*         PTableDirEntry;
  76
  77
  78   /* 'cmap' tables */
  79
  80   struct  TCMapDir_
  81   {
  82     UShort  tableVersionNumber;
  83     UShort  numCMaps;
  84   };
  85
  86   typedef struct TCMapDir_  TCMapDir;
  87   typedef TCMapDir*         PCMapDir;
  88
  89   struct  TCMapDirEntry_
  90   {
  91     UShort  platformID;
  92     UShort  platformEncodingID;
  93     Long    offset;
  94   };
  95
  96   typedef struct TCMapDirEntry_  TCMapDirEntry;
  97   typedef TCMapDirEntry*         PCMapDirEntries;
  98
  99
 100   /* 'maxp' Maximum Profiles table */
 101
 102   struct  TMaxProfile_
 103   {
 104     TT_Fixed  version;
 105     UShort    numGlyphs,
 106               maxPoints,
 107               maxContours,
 108               maxCompositePoints,
 109               maxCompositeContours,
 110               maxZones,
 111               maxTwilightPoints,
 112               maxStorage,
 113               maxFunctionDefs,
 114               maxInstructionDefs,
 115               maxStackElements,
 116               maxSizeOfInstructions,
 117               maxComponentElements,
 118               maxComponentDepth;
 119   };
 120
 121   typedef struct TMaxProfile_  TMaxProfile;
 122   typedef TMaxProfile*         PMaxProfile;
 123
 124
 125   /* table "gasp" */
 126
 127 #define GASP_GRIDFIT  0x01
 128 #define GASP_DOGRAY   0x02
 129
 130   struct  GaspRange_
 131   {
 132     UShort  maxPPEM;
 133     UShort  gaspFlag;
 134   };
 135
 136   typedef struct GaspRange_  GaspRange;
 137
 138
 139   struct  TGasp_
 140   {
 141     UShort      version;
 142     UShort      numRanges;
 143     GaspRange*  gaspRanges;
 144   };
 145
 146   typedef struct TGasp_  TGasp;
 147
 148
 149   /* table "head" - now defined in freetype.h */
 150   /* table "hhea" - now defined in freetype.h */
 151
 152
 153   /* tables "HMTX" and "VMTX" */
 154
 155   struct  TLongMetrics_
 156   {
 157     UShort  advance;
 158     Short   bearing;
 159   };
 160
 161   typedef struct TLongMetrics_  TLongMetrics, *PLongMetrics;
 162
 163   typedef Short  TShortMetrics, *PShortMetrics;
 164
 165   /* 'loca' location table type */
 166
 167   struct  TLoca_
 168   {
 169     UShort    Size;
 170     PStorage  Table;
 171   };
 172
 173   typedef struct TLoca_  TLoca;
 174
 175
 176   /* table "name" */
 177
 178   struct  TNameRec_
 179   {
 180     UShort  platformID;
 181     UShort  encodingID;
 182     UShort  languageID;
 183     UShort  nameID;
 184     UShort  stringLength;
 185     UShort  stringOffset;
 186
 187     /* this last field is not defined in the spec */
 188     /* but used by the FreeType engine            */
 189
 190     PByte   string;
 191   };
 192
 193   typedef struct TNameRec_  TNameRec;
 194
 195
 196   struct  TName_Table_
 197   {
 198     UShort     format;
 199     UShort     numNameRecords;
 200     UShort     storageOffset;
 201     TNameRec*  names;
 202     PByte      storage;
 203   };
 204
 205   typedef struct TName_Table_  TName_Table;
 206
 207
 208 #ifdef __cplusplus
 209   }
 210 #endif
 211
 212 #endif /* TTTABLES_H */
 213
 214
 215 /* END */