gdef

Documentation

Overview

Package gdef reads and writes OpenType "GDEF" tables.

Index

• Constants
• type Table
  • func Read(r parser.ReadSeekSizer) (*Table, error)
  • func (table *Table) Encode() []byte
  • func (table *Table) IsMark(gid glyph.ID) bool

Constants

const (
	GlyphClassBase      = 1
	GlyphClassLigature  = 2
	GlyphClassMark      = 3
	GlyphClassComponent = 4
)

Possible values for the GlyphClass field. https://docs.microsoft.com/en-us/typography/opentype/spec/GDEF#glyph-class-definition-table

Types

type Table

type Table struct {
	GlyphClass classdef.Table // class definition table for glyph type
	// TODO(voss): attachment point list table
	// TODO(voss): ligature caret list table
	MarkAttachClass classdef.Table // class definition table for mark attachment type
	MarkGlyphSets   []coverage.Set // table of mark glyph set definitions

}

Table contains the parsed GDEF table. https://docs.microsoft.com/en-us/typography/opentype/spec/GDEF

func Read

func Read(r parser.ReadSeekSizer) (*Table, error)

Read reads the GDEF table.

func (*Table) Encode

func (table *Table) Encode() []byte

Encode converts the GDEF table to its binary form.

func (*Table) IsMark

func (table *Table) IsMark(gid glyph.ID) bool

IsMark returns true if it is known that the glyph represents a mark character.