@td-design/react-native/lib/module/avatar/Avatar/useAvatar.js

react-native UI组件库

import helpers from '../../helpers';
const {
  px
} = helpers;
export default function useAvatar(_ref) {
  let {
    size = px(46),
    borderRadius = 0,
    circular = true
  } = _ref;
  /** icon的长宽 */
  const width = size;
  const height = size;

  /** 挂件的大小 */
  const accessorySize = (Math.sqrt(2) - 1) * width / Math.sqrt(2);

  /** 头像的弧度 */
  const avatarRadius = circular ? width / 2 : borderRadius;
  return {
    width,
    height,
    accessorySize,
    avatarRadius
  };
}
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