"use client" import React, { useCallback, useMemo, useRef, useState } from "react" import { AnimatePresence, motion, useMotionTemplate } from "motion/react" interface Position { /** The x coordinate of the lens */ x: number /** The y coordinate of the lens */ y: number } interface LensProps { /** The children of the lens */ children: React.ReactNode /** The zoom factor of the lens */ zoomFactor?: number /** The size of the lens */ lensSize?: number /** The position of the lens */ position?: Position /** The default position of the lens */ defaultPosition?: Position /** Whether the lens is static */ isStatic?: boolean /** The duration of the animation */ duration?: number /** The color of the lens */ lensColor?: string /** The aria label of the lens */ ariaLabel?: string } export function Lens({ children, zoomFactor = 1.3, lensSize = 170, isStatic = false, position = { x: 0, y: 0 }, defaultPosition, duration = 0.1, lensColor = "black", ariaLabel = "Zoom Area", }: LensProps) { if (zoomFactor < 1) { throw new Error("zoomFactor must be greater than 1") } if (lensSize < 0) { throw new Error("lensSize must be greater than 0") } const [isHovering, setIsHovering] = useState(false) const [mousePosition, setMousePosition] = useState(position) const containerRef = useRef(null) const currentPosition = useMemo(() => { if (isStatic) return position if (defaultPosition && !isHovering) return defaultPosition return mousePosition }, [isStatic, position, defaultPosition, isHovering, mousePosition]) const handleMouseMove = useCallback((e: React.MouseEvent) => { const rect = e.currentTarget.getBoundingClientRect() setMousePosition({ x: e.clientX - rect.left, y: e.clientY - rect.top, }) }, []) const handleKeyDown = useCallback((e: React.KeyboardEvent) => { if (e.key === "Escape") setIsHovering(false) }, []) const maskImage = useMotionTemplate`radial-gradient(circle ${ lensSize / 2 }px at ${currentPosition.x}px ${ currentPosition.y }px, ${lensColor} 100%, transparent 100%)` const LensContent = useMemo(() => { const { x, y } = currentPosition return (

{children}

) }, [currentPosition, maskImage, zoomFactor, children, duration]) return (

setIsHovering(true)} onMouseLeave={() => setIsHovering(false)} onMouseMove={handleMouseMove} onKeyDown={handleKeyDown} role="region" aria-label={ariaLabel} tabIndex={0} > {children} {isStatic || defaultPosition ? ( LensContent ) : ( {isHovering && LensContent} )}

) }

Lens

Instalação

Dependências