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import React, { useRef, useEffect, useMemo } from "react"; import { cn } from "@/lib/utils"; interface SensitiveTextProps { children: string; className?: string; containerClassName?: string; maxStretch?: number; sensitivity?: number; easing?: number; verticalRange?: number; falloffPower?: number; variant?: "compress" | "stretch"; style?: React.CSSProperties; } const SensitiveText: React.FC = ({ children, className = "", containerClassName = "", maxStretch = 0.5, sensitivity = 0.5, easing = 10, verticalRange = 100, falloffPower = 2, variant = "compress", style = {}, }) => { const textRef = useRef(null); const spansRef = useRef<(HTMLSpanElement | null)[]>([]); const mouseRef = useRef({ x: 0, y: 0 }); const cursorRef = useRef({ x: 0, y: 0 }); const scalesRef = useRef([]); const chars = useMemo(() => children.split(""), [children]); useEffect(() => { scalesRef.current = chars.map(() => 1); const handleMouseMove = (e: MouseEvent) => { cursorRef.current.x = e.clientX; cursorRef.current.y = e.clientY; }; const handleTouchMove = (e: TouchEvent) => { const touch = e.touches[0]; cursorRef.current.x = touch.clientX; cursorRef.current.y = touch.clientY; }; window.addEventListener("mousemove", handleMouseMove); window.addEventListener("touchmove", handleTouchMove, { passive: true }); return () => { window.removeEventListener("mousemove", handleMouseMove); window.removeEventListener("touchmove", handleTouchMove); }; }, [chars]); useEffect(() => { let rafId: number; const animate = () => { mouseRef.current.x += (cursorRef.current.x - mouseRef.current.x) / easing; mouseRef.current.y += (cursorRef.current.y - mouseRef.current.y) / easing; if (!textRef.current) { rafId = requestAnimationFrame(animate); return; } const textRect = textRef.current.getBoundingClientRect(); const isInHorizontalBounds = mouseRef.current.x >= textRect.left && mouseRef.current.x <= textRect.right; const isInVerticalBounds = mouseRef.current.y >= textRect.top && mouseRef.current.y <= textRect.bottom + verticalRange; const isInBounds = isInHorizontalBounds && isInVerticalBounds; spansRef.current.forEach((span, index) => { if (!span) return; const rect = span.getBoundingClientRect(); const charCenterX = rect.left + rect.width / 2; const distX = Math.abs(mouseRef.current.x - charCenterX); const maxDist = textRect.width * sensitivity; let targetScale = 1; if (isInBounds) { const proximity = Math.max(0, 1 - distX / maxDist); if (variant === "compress") { targetScale = 1 - proximity ** falloffPower * maxStretch; } else { targetScale = 1 + proximity ** falloffPower * maxStretch; } } const currentScale = scalesRef.current[index]; const newScale = currentScale + (targetScale - currentScale) * 0.15; scalesRef.current[index] = newScale; span.style.transform = `scaleY(${newScale})`; }); rafId = requestAnimationFrame(animate); }; animate(); return () => cancelAnimationFrame(rafId); }, [maxStretch, sensitivity, easing, verticalRange, falloffPower, variant]); return ( {chars.map((char, i) => ( { spansRef.current[i] = el; }} className={cn(className)} style={{ display: "inline-block", whiteSpace: char === " " ? "pre" : "normal", transformOrigin: "top center", lineHeight: 1, verticalAlign: "top", }} > {char === " " ? "\u00A0" : char} ))} ); }; export default SensitiveText; 4c:["$","div",null,{"className":"flex flex-col gap-12","children":[["$","div",null,{"className":"pt-10 flex flex-col gap-4","children":[["$","ul",null,{"className":"flex gap-2 flex-wrap","children":[["$","li","clsx",{"children":["$","a",null,{"href":"https://www.npmjs.com/package/clsx","target":"_blank","rel":"noopener noreferrer","className":"rounded-md border p-2 text-sm flex items-center gap-1 ","children":[["$","svg",null,{"viewBox":"0 0 24 24","className":"size-3","children":["$","path",null,{"d":"M1.763 0C.786 0 0 .786 0 1.763v20.474C0 23.214.786 24 1.763 24h20.474c.977 0 1.763-.786 1.763-1.763V1.763C24 .786 23.214 0 22.237 0zM5.13 5.323l13.837.019-.009 13.836h-3.464l.01-10.382h-3.456L12.04 19.17H5.113z","fill":"currentColor"}]}],["$","span",null,{"className":"text-xs font-medium","children":"clsx"}]]}]}],["$","li","tailwind-merge",{"children":["$","a",null,{"href":"https://www.npmjs.com/package/tailwind-merge","target":"_blank","rel":"noopener noreferrer","className":"rounded-md border p-2 text-sm flex items-center gap-1 ","children":[["$","svg",null,{"viewBox":"0 0 24 24","className":"size-3","children":["$","path",null,{"d":"M1.763 0C.786 0 0 .786 0 1.763v20.474C0 23.214.786 24 1.763 24h20.474c.977 0 1.763-.786 1.763-1.763V1.763C24 .786 23.214 0 22.237 0zM5.13 5.323l13.837.019-.009 13.836h-3.464l.01-10.382h-3.456L12.04 19.17H5.113z","fill":"currentColor"}]}],["$","span",null,{"className":"text-xs font-medium","children":"tailwind-merge"}]]}]}]]}],["$","$L50",null,{"registryDependencies":[]}]]}],["$","$L51",null,{"sourceUrl":"https://www.scrollxui.dev/registry/sensitive-text.json","proxyUrl":"https://shadcnregistry.com/r/scrollxui/sensitive-text","itemId":"@scrollxui/sensitive-text"}],["$","section",null,{"className":"flex flex-col gap-4","id":"files","children":[["$","h2",null,{"className":"text-lg md:text-2xl font-bold font-mono","children":"Files"}],["$","$L52",null,{"files":[{"path":"components/ui/sensitive-text.tsx","content":"$53","type":"registry:ui"},{"path":"lib/utils.ts","content":"import { clsx, type ClassValue } from \"clsx\";\nimport { twMerge } from \"tailwind-merge\";\n\nexport function cn(...inputs: ClassValue[]) {\n return twMerge(clsx(inputs));\n}","type":"registry:lib"}]}]]}],"$L54"]}]

Sensitive Text

Installation

Files

components

lib

Styles