Created
February 19, 2016 22:38
-
-
Save renren89/3455bf7b2a37b18ec65a to your computer and use it in GitHub Desktop.
This file contains bidirectional Unicode text that may be interpreted or compiled differently than what appears below. To review, open the file in an editor that reveals hidden Unicode characters.
Learn more about bidirectional Unicode characters
| import React, { Component } from 'react'; | |
| import { TransitionMotion, spring } from 'react-motion'; | |
| const leavingSpringConfig = { stiffness: 60, damping: 15 }; | |
| export default class Ripple extends Component { | |
| constructor(props) { | |
| super(props); | |
| this.state = { | |
| mouse: [], | |
| now: 't' + 0, | |
| } | |
| } | |
| setRipple = (pageX, pageY) => { | |
| this.setState({ | |
| position: [pageX, pageY], | |
| now: 't' + Date.now() | |
| }) | |
| }; | |
| handleMouseDown = ({pageX, pageY, }) => { | |
| this.setState(() => { | |
| return { | |
| mouse: [pageX, pageY], | |
| now: 't' + Date.now(), | |
| } | |
| }); | |
| }; | |
| handleMouseUp = () => { | |
| this.setState({ | |
| mouse: [] | |
| }) | |
| }; | |
| willLeave = (styleCell) => { | |
| return { | |
| ...styleCell.style, | |
| opacity: spring(0, leavingSpringConfig), | |
| scale: spring(2, leavingSpringConfig) | |
| } | |
| }; | |
| shouldComponentUpdate = (nextProps, nextState) => { | |
| console.log('this is next state', nextState); | |
| return this.state.mouse !== nextState.mouse | |
| }; | |
| render() { | |
| const { mouse: [mouseX, mouseY], now} = this.state; | |
| const styles = mouseX == null ? [] : [{ | |
| key: now, | |
| style: { | |
| x: mouseX, | |
| y: mouseY, | |
| opacity: spring(1), | |
| scale: spring(0) | |
| } | |
| }]; | |
| return ( | |
| <TransitionMotion willLeave={this.willLeave} styles={styles}> | |
| { circles => | |
| <div | |
| onMouseDown={this.handleMouseDown} | |
| onMouseUp={this.handleMouseUp} | |
| style={{ backgroundColor: '#1b1b1b', position: 'absolute', width: '100%', height: '100%'}}> | |
| {circles.map(({ key, style: { opacity, scale, x, y }}) => | |
| <div | |
| key={key} | |
| style={Object.assign({},ripple, { | |
| opacity: opacity, | |
| scale: scale, | |
| transform: `translate(-50%, -50%) translate3d(${x}px, ${y}px, 0) scale(${scale}`, | |
| WebkitTransform: `translate(-50%, -50%) translate3d(${x}px, ${y}px, 0) scale(${scale}` | |
| })} /> | |
| )} | |
| </div> | |
| } | |
| </TransitionMotion> | |
| ); | |
| } | |
| }; | |
| const ripple = { | |
| width: '450px', | |
| height: '450px', | |
| borderRadius: '50%', | |
| backgroundColor: '#FFF', | |
| position: 'absolute', | |
| } |
Sign up for free
to join this conversation on GitHub.
Already have an account?
Sign in to comment