44 lines
1.1 KiB
TypeScript
44 lines
1.1 KiB
TypeScript
'use client';
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import { useEffect, useState } from 'react';
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export function ReadingProgress() {
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const [mounted, setMounted] = useState(false);
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const [progress, setProgress] = useState(0);
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useEffect(() => {
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setMounted(true);
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}, []);
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useEffect(() => {
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if (!mounted) return;
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const handleScroll = () => {
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const { scrollTop, scrollHeight, clientHeight } = document.documentElement;
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const total = scrollHeight - clientHeight;
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if (total <= 0) {
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setProgress(0);
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return;
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}
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const value = Math.min(100, Math.max(0, (scrollTop / total) * 100));
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setProgress(value);
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};
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handleScroll();
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window.addEventListener('scroll', handleScroll, { passive: true });
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return () => window.removeEventListener('scroll', handleScroll);
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}, [mounted]);
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if (!mounted) return null;
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return (
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<div className="pointer-events-none fixed inset-x-0 top-0 z-40 h-1 bg-slate-200/60 dark:bg-slate-900/80">
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<div
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className="h-full origin-left bg-blue-500 transition-transform dark:bg-blue-400"
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style={{ transform: `scaleX(${progress / 100})` }}
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/>
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</div>
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);
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}
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