@onesy/utils/rgbToHsl.js

Utils

"use strict";
var __importDefault = (this && this.__importDefault) || function (mod) {
    return (mod && mod.__esModule) ? mod : { "default": mod };
};
Object.defineProperty(exports, "__esModule", { value: true });
const is_1 = __importDefault(require("./is"));
const isValid_1 = __importDefault(require("./isValid"));
const clamp_1 = __importDefault(require("./clamp"));
const castParam_1 = __importDefault(require("./castParam"));
const rgbToHsl = (value, opacity = undefined, array = false) => {
    if ((0, isValid_1.default)('color-rgb', value)) {
        let values = value.replace(/rgb|a|\(|\s|\)/g, '').split(',').filter(Boolean);
        let [r, g, b, a] = values;
        r /= 255;
        g /= 255;
        b /= 255;
        // find greatest and smallest channel values
        const cmin = Math.min(r, g, b);
        const cmax = Math.max(r, g, b);
        const delta = cmax - cmin;
        let h = 0;
        let s = 0;
        let l = 0;
        if (delta === 0)
            h = 0;
        else if (cmax === r)
            h = ((g - b) / delta) % 6;
        else if (cmax === g)
            h = (b - r) / delta + 2;
        else
            h = (r - g) / delta + 4;
        h = Math.round(h * 60);
        if (h < 0)
            h += 360;
        l = (cmax + cmin) / 2;
        s = delta === 0 ? 0 : delta / (1 - Math.abs(2 * l - 1));
        s = +(s * 100).toFixed(0);
        l = +(l * 100).toFixed(0);
        a = opacity !== undefined ? +(opacity > 1 ? (opacity / 100).toFixed(2) : (0, clamp_1.default)(opacity, 0, 1)) : a;
        values = [...[h, s, l].map(value_ => Math.round((0, castParam_1.default)(value_))), (0, is_1.default)('number', a) && +a];
        return array ? values.filter(value_ => (0, is_1.default)('number', value_)) : `hsl${(0, is_1.default)('number', a) ? 'a' : ''}(${h}, ${s}%, ${l}%${(0, is_1.default)('number', a) ? `, ${a}` : ''})`;
    }
};
exports.default = rgbToHsl;