DecodeMacintosh decode a Macintosh encoded string.

DecodeMacintoshByte returns the rune for the given byte.

ParseGlyf parses the 'glyf' table.

We apply the following logic: - read the first uint16 -> it's always the major version - if it's 0, we have a Miscrosoft table - if it's 1, we have an Apple table.

shared with gvar, sbix, eblc return an error only if data is not long enough.

ParseUint16s interprets data as a (big endian) uint16 slice.

Mask for having any Device table.

Hebrew Windows 3.1 font page */.

OEM Arabic Windows 3.1 font page */.

Simplified Arabic Windows 3.1 font page */.

Simplified Farsi Windows 3.1 font page */.

Thai Windows 3.1 font page */.

Traditional Arabic Windows 3.1 font page */.

Traditional Farsi Windows 3.1 font page */.

Byte offset from beginning of subtable to the value table for the glyphs on the kerning stack.

If set, don't advance to the next glyph before going to the new state.

If set, push this glyph on the kerning stack.

If set, reset the kerning data (clear the stack).

If set, specifies that insertions are to be made to the left of the current glyph.

This 5-bit field is treated as a count of the number of glyphs to insert at the current position.

If set, and the currentInsertList is nonzero, then the specified glyph list will be inserted as a kashida-like insertion, either before or after the current glyph (depending on the state of the currentInsertBefore flag).

If set, don't advance to the next glyph before going to the new state.

If set, specifies that insertions are to be made to the left of the marked glyph.

This 5-bit field is treated as a count of the number of glyphs to insert at the marked position.

If set, and the markedInsertList is nonzero, then the specified glyph list will be inserted as a kashida-like insertion, either before or after the marked glyph (depending on the state of the markedInsertBefore flag).

If set, mark the current glyph.

This is the last action in the list.

A 30-bit value which is sign-extended to 32-bits and added to the glyph ID, resulting in an index into the component table.

Store the ligature at the current cumulated index in the ligature table in place of the marked (i.e.

Leave the glyph pointer at this glyph for the next iteration.

Byte offset from beginning of subtable to the ligature action list.

Use the ligActionIndex to process a ligature group.

Push this glyph onto the component stack for eventual processing.

artificial.

deprecated.

Includes horizontal adjustment for advance.

Includes horizontal Device table for advance.

Includes horizontal adjustment for placement.

Includes horizontal Device table for placement.

Includes vertical adjustment for advance.

Includes vertical Device table for advance.

Includes vertical adjustment for placement.

Includes vertical Device table for placement.

AATStateEntry is shared between old and extended state tables, and between the different kind of entries.

State table header, without the actual data See https://developer.apple.com/fonts/TrueType-Reference-Manual/RM06/Chap6Tables.html.

Extended state table, including the data See https://developer.apple.com/fonts/TrueType-Reference-Manual/RM06/Chap6Tables.html - State tables binarygen: argument=entryDataSize int.

AnchorMatrix is a compact representation of a [][]Anchor.

Ankr is the anchor point table See - https://developer.apple.com/fonts/TrueType-Reference-Manual/RM06/Chap6ankr.html.

AnkrAnchor is a point within the coordinate space of a given glyph independent of the control points used to render the glyph.

avar — Axis Variations Table.

Format 17: small metrics, PNG image data.

Format 18: big metrics, PNG image data.

Format 19: metrics in CBLC table, PNG image data.

Format 2: small metrics, bit-aligned data.

Format 5: metrics in CBLC table, bit-aligned image data only.

CBLC is the Color Bitmap Location Table See - https://learn.microsoft.com/fr-fr/typography/opentype/spec/cblc.

ClassTable is the same as AATLookup8, but with no format and with bytes instead of uint16s.

Cmap is the Character to Glyph Index Mapping table See https://learn.microsoft.com/en-us/typography/opentype/spec/cmap.

DefaultUVSTable is used in Cmap format 14 See https://learn.microsoft.com/en-us/typography/opentype/spec/cmap#default-uvs-table.

DeviceTableHeader is the common header for DeviceTable See https://learn.microsoft.com/fr-fr/typography/opentype/spec/chapter2#device-and-variationindex-tables.

Feat is the feature name table.

Fvar is the Font Variations Table.

binarygen: argument=instanceCount int binarygen: argument=instanceSize int.

See - https://learn.microsoft.com/fr-fr/typography/opentype/spec/gvar.

TableHead contains critical information about the rest of the font.

https://learn.microsoft.com/en-us/typography/opentype/spec/hhea.

https://learn.microsoft.com/en-us/typography/opentype/spec/hmtx.

See - https://learn.microsoft.com/fr-fr/typography/opentype/spec/hvar.

Kern is the kern table.

Kerx is the extended kerning table See https://developer.apple.com/fonts/TrueType-Reference-Manual/RM06/Chap6kerx.html.

binarygen: argument=tupleCount int.

binarygen: argument=tupleCount int binarygen: argument=valuesCount int.

binarygen: argument=valuesCount int.

binarygen: argument=tupleCount int binarygen: argument=valuesCount int.

binarygen: argument=valuesCount int.

Layout represents the common layout table used by GPOS and GSUB.

Glyph components for one ligature.

All ligatures beginning with the same glyph.

Lookup is the common format for GSUB and GPOS lookups.

Ltag is the language tags table See https://developer.apple.com/fonts/TrueType-Reference-Manual/RM06/Chap6ltag.html.

https://learn.microsoft.com/en-us/typography/opentype/spec/Maxp.

Morx is the extended glyph metamorphosis table See https://developer.apple.com/fonts/TrueType-Reference-Manual/RM06/Chap6morx.html.

MorxChain is a set of subtables.

binarygen: argument=valuesCount int.

binarygen: argument=valuesCount int.

binarygen: argument=valuesCount int.

binarygen: argument=valuesCount int.

Naming table See https://learn.microsoft.com/en-us/typography/opentype/spec/name.

OS/2 and Windows Metrics Table See https://learn.microsoft.com/en-us/typography/opentype/spec/os2.

binarygen: argument=valueFormat1 ValueFormat binarygen: argument=valueFormat2 ValueFormat.

PostScript table See https://learn.microsoft.com/en-us/typography/opentype/spec/post.

Sbix is the Standard Bitmap Graphics Table See - https://learn.microsoft.com/fr-fr/typography/opentype/spec/sbix.

Strike stores one size of bitmap glyphs in the 'sbix' table.

SVG is the SVG (Scalable Vector Graphics) table.

Each SVG document record specifies a range of glyph IDs (from startGlyphID to endGlyphID, inclusive), and the location of its associated SVG document in the SVG table.

Trak is the tracking table.

binarygen: argument=axisCount int.

UVSMappingTable is used in Cmap format 14 See https://learn.microsoft.com/en-us/typography/opentype/spec/cmap#non-default-uvs-table.

ValueRecord has optional fields.

VariationStoreIndex reference an item in the variation store.

VORG is the Vertical Origin Table See - https://learn.microsoft.com/fr-fr/typography/opentype/spec/vorg.

AATLookup is conceptually a map[GlyphID]uint16, but it may be implemented more efficiently.

AATLookupExt is the same as AATLookup, but class values are uint32.

ClassDef stores a value for a set of GlyphIDs.

CmapSubtable is the union type for the various cmap formats.

Coverage specifies all the glyphs affected by a substitution or positioning operation described in a subtable.

DeviceTable is either an DeviceHinting for standard fonts, or a DeviceVariation for variable fonts.

GSUBLookup is one lookup subtable data.

Bloc is the bitmap location table See - https://developer.apple.com/fonts/TrueType-Reference-Manual/RM06/Chap6bloc.html.

CFF is the Compact Font Format Table.

ChainedClassSequenceRuleSet has the same binary format as ChainedSequenceRuleSet, and using the same type simplifies later processing.

ClassSequenceRuleSet has the same binary format as SequenceRuleSet, and using the same type simplifies later processing.

Coord is real number in [-1;1], stored as a fixed 2.14 integer.

EBLC is the Embedded Bitmap Location Table See - https://learn.microsoft.com/fr-fr/typography/opentype/spec/eblc.

EncodingID represents the platform specific id for entries in the name table.

Float1616 is a float32, represented in fixed 16.16 format in font files.

See https://docs.microsoft.com/en-us/typography/legacy/legacy_arabic_fonts https://github.com/Microsoft/Font-Validator/blob/520aaae/OTFontFileVal/val_OS2.cs#L644-L681.

Glyph Data.

GlyphProps is a 16-bit integer where the lower 8-bit have bits representing glyph class, and high 8-bit the mark attachment type (if any).

GPOS is the Glyph Positioning (GPOS) table.

GSUB is the Glyph Substitution (GSUB) table.

LanguageID represents the language used by an entry in the name table.

MorxSubtableVersion indicates the kind of 'morx' subtable.

NameID is the ID for entries in the font table.

Offset16 is an offset into the input byte slice.

Offset32 is an offset into the input byte slice.

PlatformID represents the platform id for entries in the name table.

ValueFormat is a mask indicating which field are set in a GPOS [ValueRecord].

https://learn.microsoft.com/en-us/typography/opentype/spec/vhea.

https://learn.microsoft.com/en-us/typography/opentype/spec/vmtx.

See - https://learn.microsoft.com/fr-fr/typography/opentype/spec/vvar.