mapbox-gl/src/style-spec/util/parse_color.js

A WebGL interactive maps library

'use strict';

const parseColorString = require('csscolorparser').parseCSSColor;

module.exports = function parseColor(input) {
    if (typeof input === 'string') {
        const rgba = parseColorString(input);
        if (!rgba) { return undefined; }

        // GL expects all components to be in the range [0, 1] and to be
        // multipled by the alpha value.
        return [
            rgba[0] / 255 * rgba[3],
            rgba[1] / 255 * rgba[3],
            rgba[2] / 255 * rgba[3],
            rgba[3]
        ];

    } else if (Array.isArray(input)) {
        return input;

    } else {
        return undefined;
    }
};