48 lines
1.1 KiB
TypeScript
48 lines
1.1 KiB
TypeScript
'use client';
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import { useEffect, useRef, useState } from 'react';
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// Fades + slides content in the first time it scrolls into view. Respects
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// prefers-reduced-motion globally via the CSS transition itself (see globals.css).
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export default function Reveal({
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children,
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className = '',
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delayMs = 0,
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}: {
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children: React.ReactNode;
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className?: string;
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delayMs?: number;
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}) {
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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 observer = new IntersectionObserver(
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([entry]) => {
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if (entry.isIntersecting) {
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setVisible(true);
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observer.disconnect();
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}
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},
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{ threshold: 0.15 },
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);
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observer.observe(el);
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return () => observer.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={`transition-all duration-700 ease-out ${
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visible ? 'translate-y-0 opacity-100' : 'translate-y-6 opacity-0'
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} ${className}`}
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style={{ transitionDelay: visible ? `${delayMs}ms` : '0ms' }}
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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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