export default {
  $colorUtils: {
    Hex2RGBA(color, alpha = 1) {
      let hex = 0;
      if (color.charAt(0) == "#") {
        if (color.length == 4) {
          //检测诸如#FFF简写格式
          color = "#" + color.charAt(1).repeat(2) +
              color.charAt(2).repeat(2) +
              color.charAt(3).repeat(2);
        }
        hex = parseInt(color.slice(1), 16);
      }
      let r = hex >> 16 & 0xFF;
      let g = hex >> 8 & 0xFF;
      let b = hex & 0xFF;
      return `rgba(${r},${g},${b},${alpha})`;
    },
    RGBtoHex(r, g, b) {
      let hex = r << 16 | g << 8 | b;
      return "#" + hex.toString(16);
    }
  }
}