weex-nuke/lib/node_modules/nuke-helper/src/hex.js

基于 Rax 、Weex 的高性能组件体系 ~~

/**
 * @param {*} hex
 * @param {*} opacity
 */

export function valueToObj(obj) {
  Object.keys(obj).forEach((name) => {
    if (typeof obj[name] === 'object') {
      obj[name] = {
        name,
        raw: obj[name],
      };
    }
  });
  return obj;
}

export function hexToRgb(hex, opacity) {
  const shorthandRegex = /^#?([a-f\d])([a-f\d])([a-f\d])$/i;
  hex = hex.replace(shorthandRegex, (m, r, g, b) => r + r + g + g + b + b);

  const result = /^#?([a-f\d]{2})([a-f\d]{2})([a-f\d]{2})$/i.exec(hex);
  if (!result) return null;

  return {
    r: parseInt(result[1], 16),
    g: parseInt(result[2], 16),
    b: parseInt(result[3], 16),
  };
}

/**
 * @param {*} hex
 * @param {*} opacity
 */
export function rgba(hex, opacity) {
  if (typeof hex === 'object' && 'raw' in hex) {
    hex = hex.raw;
  }
  if (typeof opacity === 'object' && 'raw' in opacity) {
    opacity = opacity.raw;
  }
  const result = exports.hexToRgb(hex);
  if (!result) return null;
  // if ('raw' in hex) {
  //   return { raw: `rgba(${result.r},${result.g},${result.b},${opacity})` };
  // }
  return `rgba(${result.r},${result.g},${result.b},${opacity})`;
}