Source code of Windows XP (NT5)
You can not select more than 25 topics
Topics must start with a letter or number, can include dashes ('-') and can be up to 35 characters long.
|
|
/*
* TrueType File Format Structure Definitions * * Copyright (c) 1997-1999 Microsoft Corporation. *//* Whole :
+-----------------------+ | Header | +-----------------------+ | Tables | | | | | | +-----------------------+ Header : ---------------------------------------------------------- Fixed sfnt version 0x00010000 ushort numTables Number of tables ushort searchRange (n^2 <= numtables)*16 ushort entrySelector Log2(n^2<=numTables) ushort rangeShift NumTables*16-searchRange Table Directory Entries ---------------------------------------------------------- Table Directory: ---------------------------------------------------------- ulong tag 4-byte idetifier ulong checkSum CheckSum for this table ulong offset offset from beginning of TrueType font file ulong length Length of this table ----------------------------------------------------------
Tables: ---------------------------------------------------------- cmap character to glyph mapping glyf glyph data head font header hhea horizontal header hmtx hosizontal metrics loca index to location maxp maximum profile name naming table post PostScript information OS/2 OS/2 and Windows specific metrics -------------------------- cvt Control Value Table fpgm font program hdmx hosizontal device metrics kern kerning LTSH Linear threshold table prep CVT Program WIN (reserved) VDMX Vertical Device Metrics table FOCA Reserved for IBM Font Object Content Architecture data PCLT PCL 5 table mort glyph metamorphosis table -------------------------- vhea Vertical Header table vmtx Vertical metrics table ----------------------------------------------------------*/#define TAGSIZ 4
struct TTFHeader { char sfnt_version[4]; short numTables; short searchRange; short entrySelector; short rangeShift; };struct TableEntry { char tagName[TAGSIZ]; unsigned long checkSum; long ofs; long siz; };
/***
* cmap ***/struct CmapHead { short version; short nTbls; };
struct CmapEncodingTbl { short PlatformID; short PlatformSpecEncID; long ofs; };
struct CmapSubtable { short format; short length; short version; short segCnt2; short searchRange; short rangeShift; short endCnt[2]; short reservedPad; short startCnt[2]; short idDelta[2]; short idRangeOfs[2]; };/***
* maxp ***/struct MaxpTbl { char version[4]; short numGlyph; short maxPoints; short maxContours; short maxCompositePoints; short maxCompositeContours; short maxZones; short maxTwilightPoints; short maxStorage; short maxFunctionDefs; short maxInstructiondefs; short maxStackElements; short maxSizeOfInstructions; short maxComponentElements; short maxComponentDepth; };/***
* name ***/struct NamingTable { short FormSel; short NRecs; short OfsToStr; /* Following NameRecords */ };struct NameRecord { short PlatformID; short PlatformSpecEncID; short LanguageID; short NameID; short StringLength; short StringOfs; };/***
* head ***/struct HeadTable { char version[4]; /* 0x00010000 */ char revision[4]; unsigned long chkSum; unsigned long magicNumber; /* 0x5F0F3CF5 */ short flags; short unitsPerEm; char createdDate[8]; char updatedDate[8]; short xMin; short yMin; short xMax; short yMax; short macStyle; short lowestRecPPEM; short fontDirectionHint; short indexToLocFormat; short glyphDataFormat; /* 0*/ };/***
* hhea ***/struct HheaTable { char version[4]; short Ascender; short Descender; short LineGap; short advanceWidthMax; short minLeftSideBearing; short minRightSideBearing; short xMaxExtent; short caretSlopeRise; short caretSlopeRun; short reserved[5]; short metricDataFormat; short numberOfHMetrics; };/***
* hmtx ***/ struct HMetrics { short advanceWidth; short leftSideBearing; };/***
* vhea ***/struct VheaTable { char version[4]; short Ascender; short Descender; short LineGap; short advanceHeightMax; short minTopSideBearing; short minBottomSideBearing; short yMaxExtent; short caretSlopeRise; short caretSlopeRun; short caretOffset; short reserved[4]; short metricDataFormat; short numOfLongVerMetrics; };/***
* vmtx ***/ struct VMetrics { short advanceHeight; short topSideBearing; };/***
* post ***/struct postTable { char FormatType[4]; /* 00030000 */ long italicAngle; short underlinePosition; short underlineThickness; unsigned long isFixedPitch; unsigned long minMemType42; unsigned long maxMemType42; unsigned long minMemType1; unsigned long maxMemType1; };/***
* OS/2 ***//*
typedef struct { char bFamily; char bSerifStyle; char bWeight; char bProportion; char bContrast; char bStrokeVariation; char bArmStyle; char bLetterform; char bMidline; char bXHeight; } PANOSE;*/struct OS2Table { unsigned short version; short xAvgCharWidth; unsigned short usWeightClass; unsigned short usWidthClass; short fsType; short ySubscriptXSize; short ySubscriptYSize; short ySubscriptXOffset; short ySubscriptYOffset; short ySuperscriptXSize; short ySuperscriptYSize; short ySuperscriptXOffset; short ySuperscriptYOffset; short yStrikeoutSize; short yStrikeoutPosition; short sFamilyClass; PANOSE panose; unsigned long ulCharRange[4]; char achVendID[4]; unsigned short fsSelection; unsigned short usFirstCharIndex; unsigned short usLastCharIndex; short sTypoAscender; short sTypoDescender; short sTypoLineGap; unsigned short usWinAscent; unsigned short usWinDescent; };/***
* glyf ***/struct glyfHead { short numberOfContour; short xMin, yMin; short xMax, yMax; };/** glyf data flag definition **/ #define GLYF_ON_CURVE 0x01
#define GLYF_X_SHORT 0x02 /* x is short */
#define GLYF_Y_SHORT 0x04 /* y is short */
#define GLYF_X_SHORT_N 0x02 /* x is short & negative */
#define GLYF_Y_SHORT_N 0x04 /* y is short & negative */
#define GLYF_X_SHORT_P 0x12 /* x is short & positive */
#define GLYF_Y_SHORT_P 0x24 /* y is short & positive */
#define GLYF_REPEAT 0x08
#define GLYF_X_SAME 0x10
#define GLYF_Y_SAME 0x20
/***
* Bounding Box ( Not for file structure ) ***/struct BBX { int xMin, yMin; int xMax, yMax; };
/* EOF */
|
