package cff

import "github.com/go-text/typesetting/font/cff"

Index ¶

• type CFF
• func Parse(file []byte) (*CFF, error)
• func (f *CFF) GlyphName(glyph opentype.GID) string
• func (f *CFF) LoadGlyph(glyph tables.GlyphID) ([]ot.Segment, ps.PathBounds, error)
• type CFF2
• func ParseCFF2(src []byte) (*CFF2, error)
• func (f *CFF2) LoadGlyph(glyph tables.GlyphID, coords []tables.Coord) ([]ot.Segment, ps.PathBounds, error)

Types ¶

type CFF ¶

type CFF struct {

	// Charstrings contains the actual glyph definition.
	// It has a length of numGlyphs and is indexed by glyph ID.
	// See `LoadGlyph` for a way to intepret the glyph data.
	Charstrings [][]byte
	// contains filtered or unexported fields
}

CFF represents a parsed CFF font, as found in the 'CFF ' Opentype table.

func Parse ¶

func Parse(file []byte) (*CFF, error)

Parse parses a .cff font file. Although CFF enables multiple font or CIDFont programs to be bundled together in a single file, embedded CFF font file in PDF or in TrueType/OpenType fonts shall consist of exactly one font or CIDFont. Thus, this function returns an error if the file contains more than one font.

func (*CFF) GlyphName ¶

func (f *CFF) GlyphName(glyph opentype.GID) string

GlyphName returns the name of the glyph or an empty string if not found.

func (*CFF) LoadGlyph ¶

func (f *CFF) LoadGlyph(glyph tables.GlyphID) ([]ot.Segment, ps.PathBounds, error)

LoadGlyph parses the glyph charstring to compute segments and path bounds. It returns an error if the glyph is invalid or if decoding the charstring fails.

type CFF2 ¶

type CFF2 struct {

	// Charstrings contains the actual glyph definition.
	// It has a length of numGlyphs and is indexed by glyph ID.
	// See `LoadGlyph` for a way to intepret the glyph data.
	Charstrings [][]byte

	VarStore tables.ItemVarStore // optional
	// contains filtered or unexported fields
}

CFF2 represents a parsed 'CFF2' Opentype table.

func ParseCFF2 ¶

func ParseCFF2(src []byte) (*CFF2, error)

ParseCFF2 parses 'src', which must be the content of a 'CFF2' Opentype table.

See also https://learn.microsoft.com/en-us/typography/opentype/spec/cff2

func (*CFF2) LoadGlyph ¶

func (f *CFF2) LoadGlyph(glyph tables.GlyphID, coords []tables.Coord) ([]ot.Segment, ps.PathBounds, error)

LoadGlyph parses the glyph charstring to compute segments and path bounds. It returns an error if the glyph is invalid or if decoding the charstring fails.

[coords] must either have the same length as the variations axis, or be empty, and be normalized

Source Files ¶

cff2.go cff_gen.go cff_src.go charsets.go charstring.go parser.go

Directories ¶