alireza-hassaniandClaude Sonnet 5
f16b47966b
Next.js (App Router) clone of negindentalclinic.ir, wired to the Meshkee Website API (blog, contact form, favicon), with on-page SEO and a scroll-reveal animation sequence on the homepage. See context.md for full project context. Co-Authored-By: Claude Sonnet 5 <noreply@anthropic.com>
64 lines
1.6 KiB
JavaScript
64 lines
1.6 KiB
JavaScript
"use client";
|
|
|
|
import { useEffect, useRef, useState } from "react";
|
|
|
|
/**
|
|
* Fades/slides a block into place once it scrolls into view (or immediately
|
|
* if it's already on screen at load — e.g. the hero). Pass `delay` (ms) to
|
|
* stage a sequence, and `from` to pick the entry direction.
|
|
*
|
|
* Pure CSS transition under the hood (`.reveal` / `.reveal--in` in
|
|
* globals.css) — this component only toggles the class at the right time,
|
|
* so it stays cheap and respects `prefers-reduced-motion` for free.
|
|
*/
|
|
export default function Reveal({
|
|
as: Tag = "div",
|
|
from = "up", // "up" | "down" | "left" | "right" | "scale"
|
|
delay = 0,
|
|
once = true,
|
|
className = "",
|
|
style,
|
|
children,
|
|
...rest
|
|
}) {
|
|
const ref = useRef(null);
|
|
const [visible, setVisible] = useState(false);
|
|
|
|
useEffect(() => {
|
|
const el = ref.current;
|
|
if (!el) return;
|
|
|
|
if (typeof IntersectionObserver === "undefined") {
|
|
setVisible(true);
|
|
return;
|
|
}
|
|
|
|
const io = new IntersectionObserver(
|
|
(entries) => {
|
|
for (const entry of entries) {
|
|
if (entry.isIntersecting) {
|
|
setVisible(true);
|
|
if (once) io.unobserve(entry.target);
|
|
} else if (!once) {
|
|
setVisible(false);
|
|
}
|
|
}
|
|
},
|
|
{ threshold: 0.18, rootMargin: "0px 0px -10% 0px" }
|
|
);
|
|
io.observe(el);
|
|
return () => io.disconnect();
|
|
}, [once]);
|
|
|
|
return (
|
|
<Tag
|
|
ref={ref}
|
|
className={`reveal reveal--${from} ${visible ? "reveal--in" : ""} ${className}`}
|
|
style={{ "--reveal-delay": `${delay}ms`, ...style }}
|
|
{...rest}
|
|
>
|
|
{children}
|
|
</Tag>
|
|
);
|
|
}
|