antd-color-editor/es/utils/colorUtils.js

An open-source color editor for designing color system

function _slicedToArray(arr, i) { return _arrayWithHoles(arr) || _iterableToArrayLimit(arr, i) || _unsupportedIterableToArray(arr, i) || _nonIterableRest(); }
function _nonIterableRest() { throw new TypeError("Invalid attempt to destructure non-iterable instance.\nIn order to be iterable, non-array objects must have a [Symbol.iterator]() method."); }
function _unsupportedIterableToArray(o, minLen) { if (!o) return; if (typeof o === "string") return _arrayLikeToArray(o, minLen); var n = Object.prototype.toString.call(o).slice(8, -1); if (n === "Object" && o.constructor) n = o.constructor.name; if (n === "Map" || n === "Set") return Array.from(o); if (n === "Arguments" || /^(?:Ui|I)nt(?:8|16|32)(?:Clamped)?Array$/.test(n)) return _arrayLikeToArray(o, minLen); }
function _arrayLikeToArray(arr, len) { if (len == null || len > arr.length) len = arr.length; for (var i = 0, arr2 = new Array(len); i < len; i++) arr2[i] = arr[i]; return arr2; }
function _iterableToArrayLimit(r, l) { var t = null == r ? null : "undefined" != typeof Symbol && r[Symbol.iterator] || r["@@iterator"]; if (null != t) { var e, n, i, u, a = [], f = !0, o = !1; try { if (i = (t = t.call(r)).next, 0 === l) { if (Object(t) !== t) return; f = !1; } else for (; !(f = (e = i.call(t)).done) && (a.push(e.value), a.length !== l); f = !0); } catch (r) { o = !0, n = r; } finally { try { if (!f && null != t.return && (u = t.return(), Object(u) !== u)) return; } finally { if (o) throw n; } } return a; } }
function _arrayWithHoles(arr) { if (Array.isArray(arr)) return arr; }
import { Hct, argbFromHex, hexFromArgb } from '@material/material-color-utilities';
import chroma from 'chroma-js';
export var hexToHct = function hexToHct(hex) {
  var hclColor = Hct.fromInt(argbFromHex(hex));
  return [hclColor.hue, hclColor.chroma, hclColor.tone];
};
export var hctToHex = function hctToHex(hct) {
  var hctColor = Hct.from(hct[0], hct[1], hct[2]);
  return hexFromArgb(hctColor.toInt());
};
export var toHctString = function toHctString(hex, alpha) {
  if (alpha) {
    var _chroma$rgba = chroma(hex).rgba(),
      _chroma$rgba2 = _slicedToArray(_chroma$rgba, 4),
      r = _chroma$rgba2[0],
      g = _chroma$rgba2[1],
      b = _chroma$rgba2[2],
      a = _chroma$rgba2[3];
    var newHex = chroma.rgb(r, g, b).hex();
    var hctColor = hexToHct(newHex);
    return "hcta(".concat(hctColor.map(function (c) {
      return Math.round(c);
    }).join(','), ",").concat(a, ")");
  } else {
    var _hctColor = hexToHct(hex);
    return "hct(".concat(_hctColor.map(function (c) {
      return Math.round(c);
    }).join(','), ")");
  }
};
export var toCtsString = function toCtsString(color1, color2, alpha) {
  var text;
  if (alpha) {
    text = 'cts(--)';
  } else {
    text = chroma.contrast(color1, color2).toFixed(2);
    text = 'cts(' + text + ')';
  }
  return text;
};