How do I style a material-ui Icon which was passed as prop

问题

I'm writing a custom Material UI React component which I want to pass an Icon into as a prop. However I want to style the icon when I get it and make it a minimum width and height.

Here's a simplified version of what I'm trying to do. I want to apply the iconStyle to the icon passed in as props.statusImage but can't figure out how.

import PropTypes from "prop-types";
import { makeStyles } from "@material-ui/styles";

const useStyles = makeStyles({
  iconStyle: {
    minWidth: 100,
    minHeight: 100
  }
});

function MyComponentWithIconProps(props) {
  const styles = useStyles();

  return <div>{props.statusImage}</div>;
}

MyComponentWithIconProps.propTypes = {
  statusImage: PropTypes.element
};

export default MyComponentWithIconProps;

I use the component like this

import {Done} from "@material-ui/icons";
<MyComponentWithIconProps statusImage={<Done/>}

Code Sandbox : https://codesandbox.io/s/jovial-fermi-dmb0p

I've also tried wrapping the supplied Icon in another Icon element and attempting to style that. However that didn't work and seems sort of 'hacky' anyway.

回答1:

There are three main alternatives:

Pass in the element type of the icon rather than an element (e.g. Done instead of <Done/>) and then add the className as you render the element (this is the approach in Fraction's answer).
Clone the element in order to add the className prop to it.
Put a class on the parent element and target the appropriate child type (e.g. svg).

Approach 1:

index.js

import React from "react";
import ReactDOM from "react-dom";
import { Done } from "@material-ui/icons";
import MyComponentWithIconProps from "./MyComponentWithIconProps";

function App() {
  return (
    <div className="App">
      <MyComponentWithIconProps statusImage={Done} />
    </div>
  );
}

const rootElement = document.getElementById("root");
ReactDOM.render(<App />, rootElement);

MyComponentWithIconProps.js

import React from "react";
import PropTypes from "prop-types";
import { makeStyles } from "@material-ui/styles";

const useStyles = makeStyles({
  iconStyle: {
    minWidth: 100,
    minHeight: 100
  }
});

function MyComponentWithIconProps(props) {
  const styles = useStyles();
  const StatusImage = props.statusImage;
  return (
    <div>
      <StatusImage className={styles.iconStyle} />
    </div>
  );
}

MyComponentWithIconProps.propTypes = {
  statusImage: PropTypes.element
};

export default MyComponentWithIconProps;

Approach 2:

index.js

import React from "react";
import ReactDOM from "react-dom";
import { Done } from "@material-ui/icons";
import MyComponentWithIconProps from "./MyComponentWithIconProps";

function App() {
  return (
    <div className="App">
      <MyComponentWithIconProps statusImage={<Done />} />
    </div>
  );
}

const rootElement = document.getElementById("root");
ReactDOM.render(<App />, rootElement);

MyComponentWithIconProps.js

import React from "react";
import PropTypes from "prop-types";
import { makeStyles } from "@material-ui/styles";
import clsx from "clsx";

const useStyles = makeStyles({
  iconStyle: {
    minWidth: 100,
    minHeight: 100
  }
});

function MyComponentWithIconProps(props) {
  const styles = useStyles();
  const styledImage = React.cloneElement(props.statusImage, {
    // Using clsx to combine the new class name with any existing ones that may already be on the element
    className: clsx(styles.iconStyle, props.statusImage.className)
  });
  return <div>{styledImage}</div>;
}

MyComponentWithIconProps.propTypes = {
  statusImage: PropTypes.element
};

export default MyComponentWithIconProps;

Approach 3:

index.js

import React from "react";
import ReactDOM from "react-dom";
import { Done } from "@material-ui/icons";
import MyComponentWithIconProps from "./MyComponentWithIconProps";

function App() {
  return (
    <div className="App">
      <MyComponentWithIconProps statusImage={<Done />} />
    </div>
  );
}

const rootElement = document.getElementById("root");
ReactDOM.render(<App />, rootElement);

MyComponentWithIconProps.js

import React from "react";
import PropTypes from "prop-types";
import { makeStyles } from "@material-ui/styles";

const useStyles = makeStyles({
  iconStyle: {
    "& > svg": {
      minWidth: 100,
      minHeight: 100
    }
  }
});

function MyComponentWithIconProps(props) {
  const styles = useStyles();
  return <div className={styles.iconStyle}>{props.statusImage}</div>;
}

MyComponentWithIconProps.propTypes = {
  statusImage: PropTypes.element
};

export default MyComponentWithIconProps;

回答2:

Pass the icon like this:

<MyComponentWithIconProps statusImage={Done} />

then use it as follows:

return <div><props.statusImage className={styles.iconStyle} /></div>;

回答3:

I would do like this:

import React from "react";
import PropTypes from "prop-types";
import { makeStyles } from "@material-ui/styles";

const useStyles = makeStyles({
  iconStyle: {
    minWidth: 100,
    minHeight: 100,
    color: "red"
  }
});

function MyComponentWithIconProps(props) {
  const styles = useStyles();

  return <div className={styles.iconStyle}>{props.statusImage}</div>;
}

MyComponentWithIconProps.propTypes = {
  statusImage: PropTypes.element
};

export default MyComponentWithIconProps;

来源：https://stackoverflow.com/questions/58878858/how-do-i-style-a-material-ui-icon-which-was-passed-as-prop

标签

reactjs

material-ui