"use client"; /** * @author: @dorian_baffier * @description: Scroll Text * @version: 1.0.0 * @date: 2025-06-26 * @license: MIT * @website: https://clumpui.amardeep.space * @github: https://github.com/kokonut-labs/kokonutui */ import { useRef, useState, useEffect } from "react"; import { motion, Variants } from "motion/react"; import { cn } from "@/lib/utils"; interface ScrollTextProps { texts?: string[]; className?: string; } export default function ScrollText({ texts = [ "TailwindCSS", "clumpUI", "shadcn/ui", "Next.js", "Motion", "React", "Resend", "TypeScript", "Fumadocs", "Supabase", ], className, }: ScrollTextProps) { const [activeIndex, setActiveIndex] = useState(0); const observerRef = useRef(null); const itemsRef = useRef<(HTMLDivElement | null)[]>([]); const containerRef = useRef(null); // Scroll to top on mount useEffect(() => { if (containerRef.current) { containerRef.current.scrollTop = 0; } }, []); const handleIntersection = (entries: IntersectionObserverEntry[]) => { entries.forEach((entry) => { if (entry.isIntersecting) { const index = itemsRef.current.findIndex( (item) => item === entry.target ); setActiveIndex(index); } }); }; // Setup intersection observer const setupObserver = (element: HTMLDivElement | null, index: number) => { if (element && !itemsRef.current[index]) { itemsRef.current[index] = element; if (!observerRef.current) { observerRef.current = new IntersectionObserver( handleIntersection, { threshold: 0.7, root: containerRef.current, rootMargin: "-45% 0px -45% 0px", } ); } observerRef.current.observe(element); } }; // Animation variants for the reveal effect const containerVariants: Variants = { hidden: { opacity: 0 }, visible: { opacity: 1, transition: { staggerChildren: 0.1, }, }, }; const itemVariants: Variants = { hidden: (index: number) => ({ opacity: 0, x: index % 2 === 0 ? -100 : 100, rotate: index % 2 === 0 ? -10 : 10, }), visible: { opacity: 1, x: 0, rotate: 0, transition: { type: "spring", stiffness: 100, damping: 15, duration: 0.5, }, }, }; return (

{texts.map((text, index) => ( setupObserver(el, index)} custom={index} variants={itemVariants} initial="hidden" whileInView="visible" viewport={{ once: false, margin: "-20% 0px -20% 0px" }} className={cn( "text-5xl font-bold py-8 px-4 whitespace-nowrap", "transition-colors duration-300", activeIndex === index ? "text-black dark:text-white" : "text-neutral-500/50 dark:text-neutral-600" )} > {text} ))}

); }