@material-ui/core/es/Avatar/Avatar.js

React components that implement Google's Material Design.

import _extends from "@babel/runtime/helpers/esm/extends";
import _objectWithoutPropertiesLoose from "@babel/runtime/helpers/esm/objectWithoutPropertiesLoose";
import React from 'react';
import PropTypes from 'prop-types';
import clsx from 'clsx';
import withStyles from '../styles/withStyles';
export const styles = theme => ({
  /* Styles applied to the root element. */
  root: {
    position: 'relative',
    display: 'flex',
    alignItems: 'center',
    justifyContent: 'center',
    flexShrink: 0,
    width: 40,
    height: 40,
    fontFamily: theme.typography.fontFamily,
    fontSize: theme.typography.pxToRem(20),
    borderRadius: '50%',
    overflow: 'hidden',
    userSelect: 'none'
  },

  /* Styles applied to the root element if there are children and not `src` or `srcSet`. */
  colorDefault: {
    color: theme.palette.background.default,
    backgroundColor: theme.palette.type === 'light' ? theme.palette.grey[400] : theme.palette.grey[600]
  },

  /* Styles applied to the img element if either `src` or `srcSet` is defined. */
  img: {
    width: '100%',
    height: '100%',
    textAlign: 'center',
    // Handle non-square image. The property isn't supported by IE 11.
    objectFit: 'cover'
  }
});
const Avatar = React.forwardRef(function Avatar(props, ref) {
  const {
    alt,
    children: childrenProp,
    childrenClassName: childrenClassNameProp,
    classes,
    className: classNameProp,
    component: Component = 'div',
    imgProps,
    sizes,
    src,
    srcSet
  } = props,
        other = _objectWithoutPropertiesLoose(props, ["alt", "children", "childrenClassName", "classes", "className", "component", "imgProps", "sizes", "src", "srcSet"]);

  let children = null;
  const img = src || srcSet;

  if (img) {
    children = React.createElement("img", _extends({
      alt: alt,
      src: src,
      srcSet: srcSet,
      sizes: sizes,
      className: classes.img
    }, imgProps));
  } else if (childrenClassNameProp && React.isValidElement(childrenProp)) {
    children = React.cloneElement(childrenProp, {
      className: clsx(childrenClassNameProp, childrenProp.props.className)
    });
  } else {
    children = childrenProp;
  }

  return React.createElement(Component, _extends({
    className: clsx(classes.root, classes.system, classNameProp, !img && classes.colorDefault),
    ref: ref
  }, other), children);
});
process.env.NODE_ENV !== "production" ? Avatar.propTypes = {
  /**
   * Used in combination with `src` or `srcSet` to
   * provide an alt attribute for the rendered `img` element.
   */
  alt: PropTypes.string,

  /**
   * Used to render icon or text elements inside the Avatar.
   * `src` and `alt` props will not be used and no `img` will
   * be rendered by default.
   *
   * This can be an element, or just a string.
   */
  children: PropTypes.node,

  /**
   * @ignore
   * The className of the child element.
   * Used by Chip and ListItemIcon to style the Avatar icon.
   */
  childrenClassName: PropTypes.string,

  /**
   * Override or extend the styles applied to the component.
   * See [CSS API](#css) below for more details.
   */
  classes: PropTypes.object.isRequired,

  /**
   * @ignore
   */
  className: PropTypes.string,

  /**
   * The component used for the root node.
   * Either a string to use a DOM element or a component.
   */
  component: PropTypes.elementType,

  /**
   * Attributes applied to the `img` element if the component
   * is used to display an image.
   */
  imgProps: PropTypes.object,

  /**
   * The `sizes` attribute for the `img` element.
   */
  sizes: PropTypes.string,

  /**
   * The `src` attribute for the `img` element.
   */
  src: PropTypes.string,

  /**
   * The `srcSet` attribute for the `img` element.
   */
  srcSet: PropTypes.string
} : void 0;
export default withStyles(styles, {
  name: 'MuiAvatar'
})(Avatar);