Nicholai
d3158e4c6a
work in progress implementation of: - mixer with channel strips, faders, pan knobs, level meters - timeline with ruler, playhead, sections, keyframe tracks - pattern and progression pickers for drums/chords - automation lanes and mute tracks - loop bracket for loop region selection - export modal placeholder known issues: - drum pattern changes don't update audio engine - timeline keyframes not connected to scheduler - some UI bugs remain this is a checkpoint commit for further iteration
52 lines
1.2 KiB
TypeScript
52 lines
1.2 KiB
TypeScript
'use client';
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import { useMemo } from 'react';
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import { cn } from '@/lib/utils';
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interface TimelineRulerProps {
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durationBars: number;
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pixelsPerBar: number;
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className?: string;
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}
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export function TimelineRuler({
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durationBars,
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pixelsPerBar,
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className,
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}: TimelineRulerProps) {
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const markers = useMemo(() => {
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const items: { bar: number; isMajor: boolean }[] = [];
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for (let bar = 0; bar <= durationBars; bar++) {
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items.push({ bar, isMajor: bar % 4 === 0 });
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}
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return items;
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}, [durationBars]);
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return (
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<div
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className={cn('relative h-6 bg-muted/30 border-b border-border/50', className)}
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style={{ width: durationBars * pixelsPerBar }}
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>
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{markers.map(({ bar, isMajor }) => (
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<div
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key={bar}
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className="absolute top-0 flex flex-col items-center"
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style={{ left: bar * pixelsPerBar }}
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>
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<div
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className={cn(
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'w-px',
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isMajor ? 'h-4 bg-muted-foreground/60' : 'h-2 bg-muted-foreground/30'
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)}
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/>
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{isMajor && (
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<span className="text-[9px] font-mono text-muted-foreground/80 mt-0.5">
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{bar + 1}
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</span>
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)}
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</div>
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))}
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</div>
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);
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}
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