@aimake/nanod/es/avatar/index.js

## 设计模式 NANO DESIGN 是面向于企业级中台化应用的解决方案。服务于 ToB 和 ToE 类型的单页应用，应用于各产品中从而产出了一套设计及前端规范。

function _typeof(obj) { if (typeof Symbol === "function" && typeof Symbol.iterator === "symbol") { _typeof = function _typeof(obj) { return typeof obj; }; } else { _typeof = function _typeof(obj) { return obj && typeof Symbol === "function" && obj.constructor === Symbol && obj !== Symbol.prototype ? "symbol" : typeof obj; }; } return _typeof(obj); }

function _extends() { _extends = Object.assign || function (target) { for (var i = 1; i < arguments.length; i++) { var source = arguments[i]; for (var key in source) { if (Object.prototype.hasOwnProperty.call(source, key)) { target[key] = source[key]; } } } return target; }; return _extends.apply(this, arguments); }

function _defineProperty(obj, key, value) { if (key in obj) { Object.defineProperty(obj, key, { value: value, enumerable: true, configurable: true, writable: true }); } else { obj[key] = value; } return obj; }

function _classCallCheck(instance, Constructor) { if (!(instance instanceof Constructor)) { throw new TypeError("Cannot call a class as a function"); } }

function _defineProperties(target, props) { for (var i = 0; i < props.length; i++) { var descriptor = props[i]; descriptor.enumerable = descriptor.enumerable || false; descriptor.configurable = true; if ("value" in descriptor) descriptor.writable = true; Object.defineProperty(target, descriptor.key, descriptor); } }

function _createClass(Constructor, protoProps, staticProps) { if (protoProps) _defineProperties(Constructor.prototype, protoProps); if (staticProps) _defineProperties(Constructor, staticProps); return Constructor; }

function _possibleConstructorReturn(self, call) { if (call && (_typeof(call) === "object" || typeof call === "function")) { return call; } return _assertThisInitialized(self); }

function _getPrototypeOf(o) { _getPrototypeOf = Object.setPrototypeOf ? Object.getPrototypeOf : function _getPrototypeOf(o) { return o.__proto__ || Object.getPrototypeOf(o); }; return _getPrototypeOf(o); }

function _inherits(subClass, superClass) { if (typeof superClass !== "function" && superClass !== null) { throw new TypeError("Super expression must either be null or a function"); } subClass.prototype = Object.create(superClass && superClass.prototype, { constructor: { value: subClass, writable: true, configurable: true } }); if (superClass) _setPrototypeOf(subClass, superClass); }

function _setPrototypeOf(o, p) { _setPrototypeOf = Object.setPrototypeOf || function _setPrototypeOf(o, p) { o.__proto__ = p; return o; }; return _setPrototypeOf(o, p); }

function _assertThisInitialized(self) { if (self === void 0) { throw new ReferenceError("this hasn't been initialised - super() hasn't been called"); } return self; }

var __rest = this && this.__rest || function (s, e) {
  var t = {};

  for (var p in s) {
    if (Object.prototype.hasOwnProperty.call(s, p) && e.indexOf(p) < 0) t[p] = s[p];
  }

  if (s != null && typeof Object.getOwnPropertySymbols === "function") for (var i = 0, p = Object.getOwnPropertySymbols(s); i < p.length; i++) {
    if (e.indexOf(p[i]) < 0) t[p[i]] = s[p[i]];
  }
  return t;
};

import * as React from 'react';
import * as ReactDOM from 'react-dom';
import Icon from '../icon';
import classNames from 'classnames';
import { ConfigConsumer } from '../config-provider';

var Avatar =
/*#__PURE__*/
function (_React$Component) {
  _inherits(Avatar, _React$Component);

  function Avatar() {
    var _this;

    _classCallCheck(this, Avatar);

    _this = _possibleConstructorReturn(this, _getPrototypeOf(Avatar).apply(this, arguments));
    _this.state = {
      scale: 1,
      isImgExist: true
    };

    _this.setScale = function () {
      var childrenNode = _this.avatarChildren;

      if (childrenNode) {
        var childrenWidth = childrenNode.offsetWidth;
        var avatarNode = ReactDOM.findDOMNode(_assertThisInitialized(_assertThisInitialized(_this)));
        var avatarWidth = avatarNode.getBoundingClientRect().width; // add 4px gap for each side to get better performance

        if (avatarWidth - 8 < childrenWidth) {
          _this.setState({
            scale: (avatarWidth - 8) / childrenWidth
          });
        } else {
          _this.setState({
            scale: 1
          });
        }
      }
    };

    _this.handleImgLoadError = function () {
      var onError = _this.props.onError;
      var errorFlag = onError ? onError() : undefined;

      if (errorFlag !== false) {
        _this.setState({
          isImgExist: false
        });
      }
    };

    _this.renderAvatar = function (_ref) {
      var _classNames, _classNames2;

      var getPrefixCls = _ref.getPrefixCls;

      var _a = _this.props,
          customizePrefixCls = _a.prefixCls,
          shape = _a.shape,
          size = _a.size,
          src = _a.src,
          srcSet = _a.srcSet,
          icon = _a.icon,
          className = _a.className,
          alt = _a.alt,
          others = __rest(_a, ["prefixCls", "shape", "size", "src", "srcSet", "icon", "className", "alt"]);

      var _this$state = _this.state,
          isImgExist = _this$state.isImgExist,
          scale = _this$state.scale;
      var prefixCls = getPrefixCls('avatar', customizePrefixCls);
      var sizeCls = classNames((_classNames = {}, _defineProperty(_classNames, "".concat(prefixCls, "-lg"), size === 'large'), _defineProperty(_classNames, "".concat(prefixCls, "-sm"), size === 'small'), _classNames));
      var classString = classNames(prefixCls, className, sizeCls, (_classNames2 = {}, _defineProperty(_classNames2, "".concat(prefixCls, "-").concat(shape), shape), _defineProperty(_classNames2, "".concat(prefixCls, "-image"), src && isImgExist), _defineProperty(_classNames2, "".concat(prefixCls, "-icon"), icon), _classNames2));
      var sizeStyle = typeof size === 'number' ? {
        width: size,
        height: size,
        lineHeight: "".concat(size, "px"),
        fontSize: icon ? size / 2 : 18
      } : {};
      var children = _this.props.children;

      if (src && isImgExist) {
        children = React.createElement("img", {
          src: src,
          srcSet: srcSet,
          onError: _this.handleImgLoadError,
          alt: alt
        });
      } else if (icon) {
        children = React.createElement(Icon, {
          type: icon
        });
      } else {
        var childrenNode = _this.avatarChildren;

        if (childrenNode || scale !== 1) {
          var transformString = "scale(".concat(scale, ") translateX(-50%)");
          var childrenStyle = {
            msTransform: transformString,
            WebkitTransform: transformString,
            transform: transformString
          };
          var sizeChildrenStyle = typeof size === 'number' ? {
            lineHeight: "".concat(size, "px")
          } : {};
          children = React.createElement("span", {
            className: "".concat(prefixCls, "-string"),
            ref: function ref(span) {
              return _this.avatarChildren = span;
            },
            style: _extends({}, sizeChildrenStyle, childrenStyle)
          }, children);
        } else {
          children = React.createElement("span", {
            className: "".concat(prefixCls, "-string"),
            ref: function ref(span) {
              return _this.avatarChildren = span;
            }
          }, children);
        }
      }

      return React.createElement("span", _extends({}, others, {
        style: _extends({}, sizeStyle, others.style),
        className: classString
      }), children);
    };

    return _this;
  }

  _createClass(Avatar, [{
    key: "componentDidMount",
    value: function componentDidMount() {
      this.setScale();
    }
  }, {
    key: "componentDidUpdate",
    value: function componentDidUpdate(prevProps, prevState) {
      if (prevProps.children !== this.props.children || prevState.scale !== this.state.scale && this.state.scale === 1 || prevState.isImgExist !== this.state.isImgExist) {
        this.setScale();
      }
    }
  }, {
    key: "render",
    value: function render() {
      return React.createElement(ConfigConsumer, null, this.renderAvatar);
    }
  }]);

  return Avatar;
}(React.Component);

export { Avatar as default };
Avatar.defaultProps = {
  shape: 'circle',
  size: 'default'
};