faithcore/ps/ttf.h

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/*      these definitions are mostly taken from Microsoft's True Type
        documentation.
*/

#define BYTE unsigned char
#define CHAR signed char
#define USHORT unsigned short
#define SHORT signed short
#define ULONG unsigned int
#define LONG signed int
#define FWORD SHORT
#define UFWORD USHORT

#define ONOROFF 0x01
#define XSHORT  0x02
#define YSHORT  0x04
#define REPEAT  0x08
#define XSAME   0x10
#define YSAME   0x20

#define ARG_1_AND_2_ARE_WORDS           0x0001
#define ARGS_ARE_XY_VALUES                      0x0002
#define XY_BOUND_TO_GRID                        0x0004
#define WE_HAVE_A_SCALE                         0x0008
#define MORE_COMPONENTS                         0x0020
#define WE_HAVE_AN_X_AND_Y_SCALE        0x0040
#define WE_HAVE_A_TWO_BY_TWO            0x0080
#define WE_HAVE_INSTRUCTIONS            0x0100
#define USE_MY_METRICS                          0x0200

typedef struct short_2 {
        SHORT   upper;
        USHORT  lower;
} FIXED ;

typedef struct longhormetric {
        UFWORD  advanceWidth;
        FWORD   lsb;
} LONGHORMETRIC;

typedef struct ttf_hhea {
        BYTE    version[4];
        SHORT   ascender, descender, lineGap;
        USHORT  advnaceWidthMax;
        SHORT   minLSB, minRSB, xMaxExtent;
        SHORT   caretSlopeRise, caretSlopeRun;
        SHORT   reserved[5];
        SHORT   metricDataFormat;
        USHORT  numberOfHMetrics;
} TTF_HHEA;

typedef struct ttf_dir_entry {
        char    tag[4];
        ULONG   checksum;
        ULONG   offset;
        ULONG   length;
} TTF_DIR_ENTRY ;

typedef struct ttf_directory {
        ULONG                   sfntVersion;
        USHORT                  numTables;
        USHORT                  searchRange;
        USHORT                  entrySelector;
        USHORT                  rangeShift;
        TTF_DIR_ENTRY   list;
} TTF_DIRECTORY ;

typedef struct ttf_name_rec {
        USHORT  platformID;
        USHORT  encodingID;
        USHORT  languageID;
        USHORT  nameID;
        USHORT  stringLength;
        USHORT  stringOffset;
} TTF_NAME_REC;

typedef struct ttf_name {
        USHORT                  format;
        USHORT                  numberOfNameRecords;
        USHORT                  offset;
        TTF_NAME_REC    nameRecords;
} TTF_NAME ;

typedef struct ttf_head {
        ULONG   version;
        ULONG   fontRevision;
        ULONG   checksumAdjust;
        ULONG   magicNo;
        USHORT  flags;
        USHORT  unitsPerEm;
        BYTE    created[8];
        BYTE    modified[8];
        FWORD   xMin, yMin, xMax, yMax;
        USHORT  macStyle, lowestRecPPEM;
        SHORT   fontDirection, indexToLocFormat, glyphDataFormat;
} TTF_HEAD ;

typedef struct ttf_kern {
        USHORT  version, nTables;
} TTF_KERN ;

typedef struct ttf_kern_sub {
        USHORT version, length, coverage;
        USHORT nPairs, searchRange, entrySelector, rangeShift;
} TTF_KERN_SUB;

typedef struct ttf_kern_entry {
        USHORT  left, right;
        FWORD   value;
} TTF_KERN_ENTRY;

typedef struct ttf_cmap_fmt0 {
        USHORT  format;
        USHORT  length;
        USHORT  version;
        BYTE    glyphIdArray[256];
} TTF_CMAP_FMT0;

typedef struct ttf_cmap_fmt4 {
        USHORT  format;
        USHORT  length;
        USHORT  version;
        USHORT  segCountX2;
        USHORT  searchRange;
        USHORT  entrySelector;
        USHORT  rangeShift;
} TTF_CMAP_FMT4;

typedef struct ttf_cmap_entry {
        USHORT  platformID;
        USHORT  encodingID;
        ULONG   offset;
} TTF_CMAP_ENTRY;

typedef struct ttf_cmap {
        USHORT                  version;
        USHORT                  numberOfEncodingTables;
        TTF_CMAP_ENTRY  encodingTable[1];
} TTF_CMAP ;

typedef struct ttf_glyf {
        SHORT   numberOfContours;
        FWORD   xMin, yMin, xMax, yMax;
} TTF_GLYF ;

typedef struct ttf_maxp {
        ULONG   version;
        USHORT  numGlyphs, maxPoints, maxContours;
        USHORT  maxCompositePoints, maxCompositeContours;
        USHORT  maxZones, maxTwilightPoints, maxStorage;
        USHORT  maxFunctionDefs, maxInstructionsDefs;
        USHORT  maxSizeOfInstructions, maxComponentElements;
        USHORT  maxComponentDepth;
} TTF_MAXP ;

typedef struct ttf_post_head {
        ULONG   formatType;
        FIXED   italicAngle;
        FWORD   underlinePosition;
        FWORD   underlineThickness;
        ULONG   isFixedPitch;
        ULONG   minMemType42;
        ULONG   maxMemType42;
        ULONG   minMemType1;
        ULONG   maxMemType1;
        USHORT  numGlyphs;
        USHORT  glyphNameIndex;
} TTF_POST_HEAD ;

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