export default {
  //hex颜色转rgb颜色
  HexToRgb(str) {
    str = str.replace('#', '');
    const hxs = str.match(/../g);
    for (let i = 0; i < 3; i++) hxs[i] = parseInt(hxs[i], 16);
    return hxs;
  },
  //rgb颜色转hex颜色
  RgbToHex(a, b, c) {
    const hexs = [a.toString(16), b.toString(16), c.toString(16)];
    for (let i = 0; i < 3; i++) {
      if (hexs[i].length == 1) hexs[i] = '0' + hexs[i];
    }
    return '#' + hexs.join('');
  },
  //加深
  darken(color, level) {
    const rgbc = this.HexToRgb(color);
    for (let i = 0; i < 3; i++) rgbc[i] = Math.floor(rgbc[i] * (1 - level));
    return this.RgbToHex(rgbc[0], rgbc[1], rgbc[2]);
  },
  //变淡
  lighten(color, level) {
    const rgbc = this.HexToRgb(color);
    for (let i = 0; i < 3; i++) rgbc[i] = Math.floor((255 - rgbc[i]) * level + rgbc[i]);
    return this.RgbToHex(rgbc[0], rgbc[1], rgbc[2]);
  },
};