62 lines
1.5 KiB
TypeScript
62 lines
1.5 KiB
TypeScript
"use client";
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import { useEffect, useRef, useState, type ReactNode } from "react";
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type RevealProps = {
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children: ReactNode;
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className?: string;
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/** Stagger delay in ms once visible */
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delay?: number;
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/** Optional custom y offset in px */
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offset?: number;
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};
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export default function Reveal({
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children,
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className = "",
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delay = 0,
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offset = 36,
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}: RevealProps) {
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const ref = useRef<HTMLDivElement>(null);
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const [visible, setVisible] = useState(false);
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useEffect(() => {
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const el = ref.current;
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if (!el) return;
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const reduce = window.matchMedia("(prefers-reduced-motion: reduce)").matches;
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if (reduce) {
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setVisible(true);
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return;
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}
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const io = new IntersectionObserver(
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([entry]) => {
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if (entry.isIntersecting) {
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setVisible(true);
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io.disconnect();
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}
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},
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{ threshold: 0.12, rootMargin: "0px 0px -6% 0px" },
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);
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io.observe(el);
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return () => io.disconnect();
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}, []);
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return (
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<div
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ref={ref}
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className={className}
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style={{
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opacity: visible ? 1 : 0,
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transform: visible ? "translate3d(0,0,0)" : `translate3d(0,${offset}px,0)`,
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filter: visible ? "blur(0)" : "blur(8px)",
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transition: `opacity 0.9s cubic-bezier(0.16,1,0.3,1) ${delay}ms, transform 0.9s cubic-bezier(0.16,1,0.3,1) ${delay}ms, filter 0.9s cubic-bezier(0.16,1,0.3,1) ${delay}ms`,
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willChange: "opacity, transform, filter",
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}}
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>
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{children}
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</div>
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);
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}
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