Created
October 4, 2019 09:47
-
-
Save tol-is/d442f7de5e25d22d213b2a003654da7d to your computer and use it in GitHub Desktop.
Parallax Component with Framer Motion
This file contains hidden or 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, { useState, useRef, useEffect, useLayoutEffect } from 'react'; | |
import { useViewportScroll, useTransform, motion } from 'framer-motion'; | |
const Parallax = ({ rangeX, rangeY, children, ...rest }) => { | |
const ref = useRef(); | |
const [rangeStart, setRangeStart] = useState(0); | |
const [rangeEnd, setRangeEnd] = useState(0); | |
const { scrollY } = useViewportScroll(); | |
useLayoutEffect(() => { | |
const onResize = () => { | |
const scrollPos = window.pageYOffset; | |
const html = document.documentElement; | |
const viewportHeight = window.innerHeight || html.clientHeight; | |
const rect = ref.current.getBoundingClientRect(); | |
let start = rect.top + scrollPos - viewportHeight; | |
let end = rect.top + scrollPos + rect.height; | |
setRangeStart(start); | |
setRangeEnd(end); | |
}; | |
setTimeout(onResize, 350); | |
window.addEventListener('resize', onResize); | |
return () => window.removeEventListener('resize', onResize); | |
}, [ref, rangeX, rangeX]); | |
const y = useTransform( | |
scrollY, | |
[rangeStart, rangeEnd], | |
[`${rangeY[0] * 100}%`, `${rangeY[1] * 100}%`] | |
); | |
const x = useTransform( | |
scrollY, | |
[rangeStart, rangeEnd], | |
[`${rangeX[0] * 100}%`, `${rangeX[1] * 100}%`] | |
); | |
return ( | |
<motion.div ref={ref} style={{ x, y }} {...rest}> | |
{children} | |
</motion.div> | |
); | |
}; | |
Parallax.defaultProps = { | |
rangeX: [0, 0], | |
rangeY: [0, 0], | |
}; | |
export default Parallax; |
Sign up for free
to join this conversation on GitHub.
Already have an account?
Sign in to comment