node-freetype

nodejs freetype binding, inspired by(and modified from) freetype2, svg2ttf, ttf2woff, and opentype.js, but keep focus on opentype(ttf, otf and woff), and can extract sub charset and create new font file.

meanwhile, node-freetype do not parse all glyphs at once like opentype.js, so it will take little time to load big font file.

Usage

var freetype = require('node-freetype');
var fs = require('fs');
var path = require('path');
var _ = require('underscore');


var src = fs.readFileSync('NotoSansHans-Black.ttf');
var font = freetype.parse(src);

console.log(font.tables.head);
console.log(font.tables.head.magicNumber.toString(16));
console.log(font.tables.name);
console.log(font.info);
console.log(font.tables.maxp);
console.log(font.tables.os2);
console.log(font.tables.pclt);
console.log(font.tables.post);
console.log(font.tables.vhea);
console.log(font.tables.hhea);

console.log(font.getCharGlyph("a"));
console.log(font.getCharIndex("a"));
console.log(font.getGlyphName("a"));

var ttf = font.generateSubFont('a bcd1234ac葛羽航中国制造');
var ttf_buffer = ttf.toTTF();
fs.writeFileSync('test.ttf', ttf_buffer);

var woff_buffer = ttf.toWOFF();
fs.writeFileSync('test.woff', woff_buffer);

Todo

• support open otf file format

Bugs

• 在将NotoSansHans-Black.ttf文件转换后，字母和数字的宽度有问题。见test.html在chrome下的表现。 (open test.html under test directory with Chrome and you will see this bug. but we ignore test directory in npm. see github files).