38 lines
969 B
TypeScript
38 lines
969 B
TypeScript
"use client";
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import { useEffect, useState } from "react";
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export function ReadingProgress() {
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const [progress, setProgress] = useState(0);
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useEffect(() => {
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function onScroll() {
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const doc = document.documentElement;
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const scrollTop = doc.scrollTop;
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const scrollHeight = doc.scrollHeight - doc.clientHeight;
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const pct = scrollHeight > 0 ? (scrollTop / scrollHeight) * 100 : 0;
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setProgress(Math.min(100, Math.max(0, pct)));
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}
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onScroll();
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window.addEventListener("scroll", onScroll, { passive: true });
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return () => window.removeEventListener("scroll", onScroll);
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}, []);
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return (
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<div
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className="reading-progress"
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role="progressbar"
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aria-valuenow={Math.round(progress)}
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aria-valuemin={0}
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aria-valuemax={100}
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aria-label="Reading progress"
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>
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<div
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className="reading-progress__bar"
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style={{ width: `${progress}%` }}
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/>
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</div>
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);
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}
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