单击 Material UI 更改波纹颜色

Question

This is my <MyButton /> Component

import React from 'react';
import { withStyles } from '@material-ui/core/styles';
import Button from '@material-ui/core/Button';

const styles = theme => ({
  button: {
    backgroundColor: 'green',
    "&:hover": {
      backgroundColor: "red"
    },
  },
});

function MyButton(props) {

  return (
    <Button
      className={props.classes.button} >
      {props.text}
    </Button>
  );
}

export default withStyles(styles)(MyButton);

Currently, there is the default click effect on the button, brightening/lightening it up on click (see here: https://material-ui.com/demos/buttons/ ). However, I want the color of the "ripple" to be blue when the button is clicked.

I tried

"&:click": {
    backgroundColor: "blue"
},

and

"&:active": {
    backgroundColor: "blue"
},

No luck though. How do I change the color of the ripple when the button is clicked?

Answer 1

Here's an example showing how to modify the button ripple:

import React from "react";
import { withStyles } from "@material-ui/core/styles";
import Button from "@material-ui/core/Button";

const styles = theme => ({
  button: {
    backgroundColor: "green",
    "&:hover": {
      backgroundColor: "red"
    }
  },
  child: {
    backgroundColor: "blue"
  },
  rippleVisible: {
    opacity: 0.5,
    animation: `$enter 550ms ${theme.transitions.easing.easeInOut}`
  },
  "@keyframes enter": {
    "0%": {
      transform: "scale(0)",
      opacity: 0.1
    },
    "100%": {
      transform: "scale(1)",
      opacity: 0.5
    }
  }
});

function MyButton({ classes, ...other }) {
  const { button: buttonClass, ...rippleClasses } = classes;
  return (
    <Button
      TouchRippleProps={{ classes: rippleClasses }}
      className={buttonClass}
      {...other}
    />
  );
}

export default withStyles(styles)(MyButton);

The default opacity of the ripple is 0.3. In the example I have increased this to 0.5 to make it easier to verify that the ripple is blue. Since the button background is red (due to the hover styling), the result is purple. You'll get a different overall effect if you move to the button via the keyboard since the blue will be layered on top of the button's green background.

You'll find some additional background in my answer here: How to set MuiButton text and active color

The main resource for the styling of the ripple is its source code: https://github.com/mui-org/material-ui/blob/v4.10.2/packages/material-ui/src/ButtonBase/TouchRipple.js

JSS keyframes documentation: https://cssinjs.org/jss-syntax/?v=v10.3.0#keyframes-animation

Answer demonstrating use of keyframes: How to apply custom animation effect @keyframes in MaterialUI using makestyles()

Answer 2

Here is the hack for Material-UI 4.9.10

Add a class to button and then add the below code to given class

 Btn:{
    "& .MuiTouchRipple-root span":{
      backgroundColor: 'red!important',
      opacity: .3,
    },
},

Answer 3

Using CSS - can be tricky to identify the class for the MUI component at times, but for our usage of the <ListItem> element which is rendered like a button:

.MuiListItem-button:hover {
  background-color: rgba(23, 93, 131, 0.12) !important;
}
.MuiTouchRipple-rippleVisible {
  color: #005d83 !important;
}

Note: we use a dark blue and customized the background-color attribute with some opacity.

Answer 4

I've adapted the solution from this answer to work with styled components and emotion/styled .

const ButtonStyledWithSC = styledSC(Button)`
  && {
    background-color: magenta;
    width: 10rem;
    height: 3rem;
    margin: 10px;

    &:hover {
      background-color: white;
    }

    > .MuiTouchRipple-root span {
      background-color: cyan;
    }
  }
`;