opentype

package
v0.0.0-...-d956aad Latest Latest
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Published: Feb 2, 2020 License: Unlicense Imports: 10 Imported by: 0

Documentation

Overview

Package opentype implements text layout and shaping for OpenType files.

Index

Constants

This section is empty.

Variables

This section is empty.

Functions

This section is empty.

Types

type Collection

type Collection struct {
	// contains filtered or unexported fields
}

Collection is a collection of one or more fonts.

func ParseCollection

func ParseCollection(src []byte) (*Collection, error)

ParseCollection parses an SFNT font collection, such as TTC or OTC data, from a []byte data source.

If passed data for a single font, a TTF or OTF instead of a TTC or OTC, it will return a collection containing 1 font.

func ParseCollectionReaderAt

func ParseCollectionReaderAt(src io.ReaderAt) (*Collection, error)

ParseCollectionReaderAt parses an SFNT collection, such as TTC or OTC data, from an io.ReaderAt data source.

If passed data for a single font, a TTF or OTF instead of a TTC or OTC, it will return a collection containing 1 font.

func (*Collection) Font

func (c *Collection) Font(i int) (*Font, error)

Font returns the i'th font in the collection.

func (*Collection) NumFonts

func (c *Collection) NumFonts() int

NumFonts returns the number of fonts in the collection.

type Font

type Font struct {
	// contains filtered or unexported fields
}

Font implements text.Face.

func Parse

func Parse(src []byte) (*Font, error)

NewFont parses an SFNT font, such as TTF or OTF data, from a []byte data source.

func (*Font) Layout

func (f *Font) Layout(ppem fixed.Int26_6, str string, opts text.LayoutOptions) *text.Layout

func (*Font) Metrics

func (f *Font) Metrics(ppem fixed.Int26_6) font.Metrics

func (*Font) Shape

func (f *Font) Shape(ppem fixed.Int26_6, str text.String) op.CallOp

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