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Harfbuzz re-written in Go

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⚠️ This package is not maintained anymore. Use https://github.com/boxesandglue/textshape instead.

# Text layout library for Golang [![Go Reference](https://pkg.go.dev/badge/github.com/boxesandglue/textlayout.svg)](https://pkg.go.dev/github.com/boxesandglue/textlayout)

This module provides a chain of tools to layout text. It is mainly a port of the C libraries harfbuzz and graphite.

## Project structure update

This repository is a shallow copy of https://github.com/benoitkugler/textlayout. All credits go to Benoit KUGLER and others (see the detailed history).

As of v0.1.0, the content of this repository has been split, with higher level, more experimental packages moved to [textprocessing](https://github.com/boxesandglue/textlayout).

The remaining packages are the more stable, low level logic used by [go-text](https://github.com/go-text/typesetting).

As of v0.1.1, the font files only used for internal tests have been moved in a [separate module](https://github.com/benoitkugler/textlayout-testdata), so that regular builds do not have to download these large files (this requires go1.17 for module lazy loading).

## Overview

The package [fonts](fonts) provides the low level primitives to load and read font files. Once a font is selected, [harfbuzz](harfbuzz) is responsible for laying out a line of text, that is transforming a sequence of unicode points (runes) to a sequence of positioned glyphs. Graphite fonts are supported via the [graphite](graphite) package.
Some higher level library may wrap these tools to provide an interface capable of laying out an entire text.

## Status of the project

This project is a work in progress. Some parts of it are already usable : [fonts/truetype](fonts/truetype), [harfbuzz](harfbuzz) and [graphite](graphite), but breaking changes may be committed on the fly.

## Licensing

This module is provided under the MIT license.

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