package opentype

import "gioui.org/font/opentype"

Package opentype implements text layout and shaping for OpenType files.

NOTE: the OpenType specification allows for fonts to include bitmap images in a variety of formats. In the interest of small binary sizes, the opentype package only automatically imports the PNG image decoder. If you have a font with glyphs in JPEG or TIFF formats, register those decoders with the image package in order to ensure those glyphs are visible in text.

Index ¶

• func DescriptionToFont(md fontapi.Description) giofont.Font
• func FontToDescription(font giofont.Font) fontapi.Description
• func ParseCollection(src []byte) ([]giofont.FontFace, error)
• type Face
• func Parse(src []byte) (Face, error)
• func (f Face) Face() *fontapi.Face
• func (f Face) Font() giofont.Font
• Bugs

Functions ¶

func DescriptionToFont ¶

func DescriptionToFont(md fontapi.Description) giofont.Font

func FontToDescription ¶

func FontToDescription(font giofont.Font) fontapi.Description

func ParseCollection ¶

func ParseCollection(src []byte) ([]giofont.FontFace, error)

ParseCollection parse an Opentype font file, with support for collections. Single font files are supported, returning a slice with length 1. The returned fonts are automatically wrapped in a text.FontFace with inferred font font. BUG(whereswaldon): the only Variant that can be detected automatically is "Mono".

Types ¶

type Face ¶

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

Face is a thread-safe representation of a loaded font. For efficiency, applications should construct a face for any given font file once, reusing it across different text shapers.

func Parse ¶

func Parse(src []byte) (Face, error)

Parse constructs a Face from source bytes.

func (Face) Face ¶

func (f Face) Face() *fontapi.Face

Face returns a thread-unsafe wrapper for this Face suitable for use by a single shaper. Face many be invoked any number of times and is safe so long as each return value is only used by one goroutine.

func (Face) Font ¶

func (f Face) Font() giofont.Font

FontFace returns a text.Font with populated font metadata for the font. BUG(whereswaldon): the only Variant that can be detected automatically is "Mono".

Bugs ¶

☞ the only Variant that can be detected automatically is "Mono".

☞ the only Variant that can be detected automatically is "Mono".

Source Files ¶

opentype.go