347 lines
8.0 KiB
JavaScript
Executable File
347 lines
8.0 KiB
JavaScript
Executable File
/**
|
|
* Copyright (c) 2015-present, Facebook, Inc.
|
|
* All rights reserved.
|
|
*
|
|
* This source code is licensed under the BSD-style license found in the
|
|
* LICENSE file in the root directory of this source tree. An additional grant
|
|
* of patent rights can be found in the PATENTS file in the same directory.
|
|
*
|
|
* @providesModule normalizeColor
|
|
* @flow
|
|
*/
|
|
/* eslint no-bitwise: 0 */
|
|
'use strict';
|
|
|
|
function normalizeColor(color: string | number): ?number {
|
|
var match;
|
|
|
|
if (typeof color === 'number') {
|
|
if (color >>> 0 === color && color >= 0 && color <= 0xffffffff) {
|
|
return color;
|
|
}
|
|
return null;
|
|
}
|
|
|
|
// Ordered based on occurrences on Facebook codebase
|
|
if ((match = matchers.hex6.exec(color))) {
|
|
return parseInt(match[1] + 'ff', 16) >>> 0;
|
|
}
|
|
|
|
if (names.hasOwnProperty(color)) {
|
|
return names[color];
|
|
}
|
|
|
|
if ((match = matchers.rgb.exec(color))) {
|
|
return (
|
|
(// b
|
|
parse255(match[1]) << 24 | // r
|
|
parse255(match[2]) << 16 | // g
|
|
parse255(match[3]) << 8 | 0x000000ff) // a
|
|
) >>> 0;
|
|
}
|
|
|
|
if ((match = matchers.rgba.exec(color))) {
|
|
return (
|
|
(// b
|
|
parse255(match[1]) << 24 | // r
|
|
parse255(match[2]) << 16 | // g
|
|
parse255(match[3]) << 8 | parse1(match[4])) // a
|
|
) >>> 0;
|
|
}
|
|
|
|
if ((match = matchers.hex3.exec(color))) {
|
|
return parseInt(
|
|
match[1] + match[1] + // r
|
|
match[2] + match[2] + // g
|
|
match[3] + match[3] + // b
|
|
'ff', // a
|
|
16
|
|
) >>> 0;
|
|
}
|
|
|
|
// https://drafts.csswg.org/css-color-4/#hex-notation
|
|
if ((match = matchers.hex8.exec(color))) {
|
|
return parseInt(match[1], 16) >>> 0;
|
|
}
|
|
|
|
if ((match = matchers.hex4.exec(color))) {
|
|
return parseInt(
|
|
match[1] + match[1] + // r
|
|
match[2] + match[2] + // g
|
|
match[3] + match[3] + // b
|
|
match[4] + match[4], // a
|
|
16
|
|
) >>> 0;
|
|
}
|
|
|
|
if ((match = matchers.hsl.exec(color))) {
|
|
return (
|
|
(hslToRgb(
|
|
parse360(match[1]), // h
|
|
parsePercentage(match[2]), // s
|
|
parsePercentage(match[3]) // l
|
|
) | 0x000000ff) // a
|
|
) >>> 0;
|
|
}
|
|
|
|
if ((match = matchers.hsla.exec(color))) {
|
|
return (
|
|
(hslToRgb(
|
|
parse360(match[1]), // h
|
|
parsePercentage(match[2]), // s
|
|
parsePercentage(match[3]) // l
|
|
) | parse1(match[4])) // a
|
|
) >>> 0;
|
|
}
|
|
|
|
return null;
|
|
}
|
|
|
|
function hue2rgb(p: number, q: number, t: number): number {
|
|
if (t < 0) {
|
|
t += 1;
|
|
}
|
|
if (t > 1) {
|
|
t -= 1;
|
|
}
|
|
if (t < 1 / 6) {
|
|
return p + (q - p) * 6 * t;
|
|
}
|
|
if (t < 1 / 2) {
|
|
return q;
|
|
}
|
|
if (t < 2 / 3) {
|
|
return p + (q - p) * (2 / 3 - t) * 6;
|
|
}
|
|
return p;
|
|
}
|
|
|
|
function hslToRgb(h: number, s: number, l: number): number {
|
|
var q = l < 0.5 ? l * (1 + s) : l + s - l * s;
|
|
var p = 2 * l - q;
|
|
var r = hue2rgb(p, q, h + 1 / 3);
|
|
var g = hue2rgb(p, q, h);
|
|
var b = hue2rgb(p, q, h - 1 / 3);
|
|
|
|
return (
|
|
Math.round(r * 255) << 24 |
|
|
Math.round(g * 255) << 16 |
|
|
Math.round(b * 255) << 8
|
|
);
|
|
}
|
|
|
|
// var INTEGER = '[-+]?\\d+';
|
|
var NUMBER = '[-+]?\\d*\\.?\\d+';
|
|
var PERCENTAGE = NUMBER + '%';
|
|
|
|
function call(...args) {
|
|
return '\\(\\s*(' + args.join(')\\s*,\\s*(') + ')\\s*\\)';
|
|
}
|
|
|
|
var matchers = {
|
|
rgb: new RegExp('rgb' + call(NUMBER, NUMBER, NUMBER)),
|
|
rgba: new RegExp('rgba' + call(NUMBER, NUMBER, NUMBER, NUMBER)),
|
|
hsl: new RegExp('hsl' + call(NUMBER, PERCENTAGE, PERCENTAGE)),
|
|
hsla: new RegExp('hsla' + call(NUMBER, PERCENTAGE, PERCENTAGE, NUMBER)),
|
|
hex3: /^#([0-9a-fA-F]{1})([0-9a-fA-F]{1})([0-9a-fA-F]{1})$/,
|
|
hex4: /^#([0-9a-fA-F]{1})([0-9a-fA-F]{1})([0-9a-fA-F]{1})([0-9a-fA-F]{1})$/,
|
|
hex6: /^#([0-9a-fA-F]{6})$/,
|
|
hex8: /^#([0-9a-fA-F]{8})$/,
|
|
};
|
|
|
|
function parse255(str: string): number {
|
|
var int = parseInt(str, 10);
|
|
if (int < 0) {
|
|
return 0;
|
|
}
|
|
if (int > 255) {
|
|
return 255;
|
|
}
|
|
return int;
|
|
}
|
|
|
|
function parse360(str: string): number {
|
|
var int = parseFloat(str);
|
|
return (((int % 360) + 360) % 360) / 360;
|
|
}
|
|
|
|
function parse1(str: string): number {
|
|
var num = parseFloat(str);
|
|
if (num < 0) {
|
|
return 0;
|
|
}
|
|
if (num > 1) {
|
|
return 255;
|
|
}
|
|
return Math.round(num * 255);
|
|
}
|
|
|
|
function parsePercentage(str: string): number {
|
|
// parseFloat conveniently ignores the final %
|
|
var int = parseFloat(str);
|
|
if (int < 0) {
|
|
return 0;
|
|
}
|
|
if (int > 100) {
|
|
return 1;
|
|
}
|
|
return int / 100;
|
|
}
|
|
|
|
var names = {
|
|
transparent: 0x00000000,
|
|
|
|
// http://www.w3.org/TR/css3-color/#svg-color
|
|
aliceblue: 0xf0f8ffff,
|
|
antiquewhite: 0xfaebd7ff,
|
|
aqua: 0x00ffffff,
|
|
aquamarine: 0x7fffd4ff,
|
|
azure: 0xf0ffffff,
|
|
beige: 0xf5f5dcff,
|
|
bisque: 0xffe4c4ff,
|
|
black: 0x000000ff,
|
|
blanchedalmond: 0xffebcdff,
|
|
blue: 0x0000ffff,
|
|
blueviolet: 0x8a2be2ff,
|
|
brown: 0xa52a2aff,
|
|
burlywood: 0xdeb887ff,
|
|
burntsienna: 0xea7e5dff,
|
|
cadetblue: 0x5f9ea0ff,
|
|
chartreuse: 0x7fff00ff,
|
|
chocolate: 0xd2691eff,
|
|
coral: 0xff7f50ff,
|
|
cornflowerblue: 0x6495edff,
|
|
cornsilk: 0xfff8dcff,
|
|
crimson: 0xdc143cff,
|
|
cyan: 0x00ffffff,
|
|
darkblue: 0x00008bff,
|
|
darkcyan: 0x008b8bff,
|
|
darkgoldenrod: 0xb8860bff,
|
|
darkgray: 0xa9a9a9ff,
|
|
darkgreen: 0x006400ff,
|
|
darkgrey: 0xa9a9a9ff,
|
|
darkkhaki: 0xbdb76bff,
|
|
darkmagenta: 0x8b008bff,
|
|
darkolivegreen: 0x556b2fff,
|
|
darkorange: 0xff8c00ff,
|
|
darkorchid: 0x9932ccff,
|
|
darkred: 0x8b0000ff,
|
|
darksalmon: 0xe9967aff,
|
|
darkseagreen: 0x8fbc8fff,
|
|
darkslateblue: 0x483d8bff,
|
|
darkslategray: 0x2f4f4fff,
|
|
darkslategrey: 0x2f4f4fff,
|
|
darkturquoise: 0x00ced1ff,
|
|
darkviolet: 0x9400d3ff,
|
|
deeppink: 0xff1493ff,
|
|
deepskyblue: 0x00bfffff,
|
|
dimgray: 0x696969ff,
|
|
dimgrey: 0x696969ff,
|
|
dodgerblue: 0x1e90ffff,
|
|
firebrick: 0xb22222ff,
|
|
floralwhite: 0xfffaf0ff,
|
|
forestgreen: 0x228b22ff,
|
|
fuchsia: 0xff00ffff,
|
|
gainsboro: 0xdcdcdcff,
|
|
ghostwhite: 0xf8f8ffff,
|
|
gold: 0xffd700ff,
|
|
goldenrod: 0xdaa520ff,
|
|
gray: 0x808080ff,
|
|
green: 0x008000ff,
|
|
greenyellow: 0xadff2fff,
|
|
grey: 0x808080ff,
|
|
honeydew: 0xf0fff0ff,
|
|
hotpink: 0xff69b4ff,
|
|
indianred: 0xcd5c5cff,
|
|
indigo: 0x4b0082ff,
|
|
ivory: 0xfffff0ff,
|
|
khaki: 0xf0e68cff,
|
|
lavender: 0xe6e6faff,
|
|
lavenderblush: 0xfff0f5ff,
|
|
lawngreen: 0x7cfc00ff,
|
|
lemonchiffon: 0xfffacdff,
|
|
lightblue: 0xadd8e6ff,
|
|
lightcoral: 0xf08080ff,
|
|
lightcyan: 0xe0ffffff,
|
|
lightgoldenrodyellow: 0xfafad2ff,
|
|
lightgray: 0xd3d3d3ff,
|
|
lightgreen: 0x90ee90ff,
|
|
lightgrey: 0xd3d3d3ff,
|
|
lightpink: 0xffb6c1ff,
|
|
lightsalmon: 0xffa07aff,
|
|
lightseagreen: 0x20b2aaff,
|
|
lightskyblue: 0x87cefaff,
|
|
lightslategray: 0x778899ff,
|
|
lightslategrey: 0x778899ff,
|
|
lightsteelblue: 0xb0c4deff,
|
|
lightyellow: 0xffffe0ff,
|
|
lime: 0x00ff00ff,
|
|
limegreen: 0x32cd32ff,
|
|
linen: 0xfaf0e6ff,
|
|
magenta: 0xff00ffff,
|
|
maroon: 0x800000ff,
|
|
mediumaquamarine: 0x66cdaaff,
|
|
mediumblue: 0x0000cdff,
|
|
mediumorchid: 0xba55d3ff,
|
|
mediumpurple: 0x9370dbff,
|
|
mediumseagreen: 0x3cb371ff,
|
|
mediumslateblue: 0x7b68eeff,
|
|
mediumspringgreen: 0x00fa9aff,
|
|
mediumturquoise: 0x48d1ccff,
|
|
mediumvioletred: 0xc71585ff,
|
|
midnightblue: 0x191970ff,
|
|
mintcream: 0xf5fffaff,
|
|
mistyrose: 0xffe4e1ff,
|
|
moccasin: 0xffe4b5ff,
|
|
navajowhite: 0xffdeadff,
|
|
navy: 0x000080ff,
|
|
oldlace: 0xfdf5e6ff,
|
|
olive: 0x808000ff,
|
|
olivedrab: 0x6b8e23ff,
|
|
orange: 0xffa500ff,
|
|
orangered: 0xff4500ff,
|
|
orchid: 0xda70d6ff,
|
|
palegoldenrod: 0xeee8aaff,
|
|
palegreen: 0x98fb98ff,
|
|
paleturquoise: 0xafeeeeff,
|
|
palevioletred: 0xdb7093ff,
|
|
papayawhip: 0xffefd5ff,
|
|
peachpuff: 0xffdab9ff,
|
|
peru: 0xcd853fff,
|
|
pink: 0xffc0cbff,
|
|
plum: 0xdda0ddff,
|
|
powderblue: 0xb0e0e6ff,
|
|
purple: 0x800080ff,
|
|
rebeccapurple: 0x663399ff,
|
|
red: 0xff0000ff,
|
|
rosybrown: 0xbc8f8fff,
|
|
royalblue: 0x4169e1ff,
|
|
saddlebrown: 0x8b4513ff,
|
|
salmon: 0xfa8072ff,
|
|
sandybrown: 0xf4a460ff,
|
|
seagreen: 0x2e8b57ff,
|
|
seashell: 0xfff5eeff,
|
|
sienna: 0xa0522dff,
|
|
silver: 0xc0c0c0ff,
|
|
skyblue: 0x87ceebff,
|
|
slateblue: 0x6a5acdff,
|
|
slategray: 0x708090ff,
|
|
slategrey: 0x708090ff,
|
|
snow: 0xfffafaff,
|
|
springgreen: 0x00ff7fff,
|
|
steelblue: 0x4682b4ff,
|
|
tan: 0xd2b48cff,
|
|
teal: 0x008080ff,
|
|
thistle: 0xd8bfd8ff,
|
|
tomato: 0xff6347ff,
|
|
turquoise: 0x40e0d0ff,
|
|
violet: 0xee82eeff,
|
|
wheat: 0xf5deb3ff,
|
|
white: 0xffffffff,
|
|
whitesmoke: 0xf5f5f5ff,
|
|
yellow: 0xffff00ff,
|
|
yellowgreen: 0x9acd32ff,
|
|
};
|
|
|
|
module.exports = normalizeColor;
|