import * as React from 'react'; import Box from '@mui/material/Box'; import Tooltip from '@mui/material/Tooltip'; export default function AnchorElTooltips() { const positionRef = React.useRef({ x: 0, y: 0, }); const popperRef = React.useRef(null); const areaRef = React.useRef(null); const handleMouseMove = (event) => { positionRef.current = { x: event.clientX, y: event.clientY }; if (popperRef.current != null) { popperRef.current.update(); } }; return ( { return new DOMRect( positionRef.current.x, areaRef.current.getBoundingClientRect().y, 0, 0, ); }, }, }, }} > Hover ); }