fonteditor-core/src/ttf/table/struct.js

fonts (ttf, woff, woff2, eot, svg, otf) parse, write, transform, glyph adjust.

/**
 * @file ttf基本数据结构
 * @author mengke01(kekee000@gmail.com)
 *
 * https://developer.apple.com/fonts/TrueType-Reference-Manual/RM06/Chap6.html
 */

const struct = {
    Int8: 1,
    Uint8: 2,
    Int16: 3,
    Uint16: 4,
    Int32: 5,
    Uint32: 6,
    Fixed: 7, // 32-bit signed fixed-point number (16.16)
    FUnit: 8, // Smallest measurable distance in the em space
    // 16-bit signed fixed number with the low 14 bits of fraction
    F2Dot14: 11,
    // The long internal format of a date in seconds since 12:00 midnight,
    // January 1, 1904. It is represented as a signed 64-bit integer.
    LongDateTime: 12,

    // extend data type
    Char: 13,
    String: 14,
    Bytes: 15,
    Uint24: 20
};

// 反转名字查找
const names = {};
Object.keys(struct).forEach((key) => {
    names[struct[key]] = key;
});

struct.names = names;

export default struct;