From 3e89d2998588f8e35c524e523ba2ee853f0f6475 Mon Sep 17 00:00:00 2001
From: Maze Winther <mazewinther@gmail.com>
Date: Mon, 20 Apr 2026 11:31:17 +0200
Subject: refactor: restructure files to their domains,  new preview overlay
 system, and dep graph

---
 .../editor/panels/timeline/timeline-ruler.tsx      | 141 ---------------------
 1 file changed, 141 deletions(-)
 delete mode 100644 apps/web/src/components/editor/panels/timeline/timeline-ruler.tsx

(limited to 'apps/web/src/components/editor/panels/timeline/timeline-ruler.tsx')

diff --git a/apps/web/src/components/editor/panels/timeline/timeline-ruler.tsx b/apps/web/src/components/editor/panels/timeline/timeline-ruler.tsx
deleted file mode 100644
index 7b69e820..00000000
--- a/apps/web/src/components/editor/panels/timeline/timeline-ruler.tsx
+++ /dev/null
@@ -1,141 +0,0 @@
-import { type JSX, useLayoutEffect, useRef } from "react";
-import {
-	BASE_TIMELINE_PIXELS_PER_SECOND,
-} from "@/lib/timeline/scale";
-import { mediaTimeToSeconds } from "opencut-wasm";
-import { TICKS_PER_SECOND } from "@/lib/wasm";
-import { TIMELINE_RULER_HEIGHT_PX } from "./layout";
-import { DEFAULT_FPS } from "@/lib/fps/defaults";
-import { useEditor } from "@/hooks/use-editor";
-import { getRulerConfig, shouldShowLabel } from "@/lib/timeline/ruler-utils";
-import { useScrollPosition } from "@/hooks/timeline/use-scroll-position";
-import { TimelineTick } from "./timeline-tick";
-
-interface TimelineRulerProps {
-	zoomLevel: number;
-	dynamicTimelineWidth: number;
-	rulerRef: React.Ref<HTMLDivElement>;
-	tracksScrollRef: React.RefObject<HTMLElement | null>;
-	handleWheel: (e: React.WheelEvent) => void;
-	handleTimelineContentClick: (e: React.MouseEvent) => void;
-	handleRulerTrackingMouseDown: (e: React.MouseEvent) => void;
-	handleRulerMouseDown: (e: React.MouseEvent) => void;
-}
-
-export function TimelineRuler({
-	zoomLevel,
-	dynamicTimelineWidth,
-	rulerRef,
-	tracksScrollRef,
-	handleWheel,
-	handleTimelineContentClick,
-	handleRulerTrackingMouseDown,
-	handleRulerMouseDown,
-}: TimelineRulerProps) {
-	const durationTicks = useEditor((e) => e.timeline.getTotalDuration());
-	const durationSeconds = mediaTimeToSeconds({ time: durationTicks });
-	const pixelsPerSecond = BASE_TIMELINE_PIXELS_PER_SECOND * zoomLevel;
-	const visibleDurationSeconds = dynamicTimelineWidth / pixelsPerSecond;
-	const effectiveDurationSeconds = Math.max(durationSeconds, visibleDurationSeconds);
-	const fps =
-		useEditor((e) => e.project.getActiveOrNull()?.settings.fps) ?? DEFAULT_FPS;
-	const { labelIntervalSeconds, tickIntervalSeconds } = getRulerConfig({
-		zoomLevel,
-		fps,
-	});
-	const tickCount = Math.ceil(effectiveDurationSeconds / tickIntervalSeconds) + 1;
-
-	const { scrollLeft, viewportWidth } = useScrollPosition({
-		scrollRef: tracksScrollRef,
-	});
-
-	/**
-	 * widens the virtualization buffer during zoom transitions.
-	 * useScrollPosition lags one frame behind the scroll adjustment
-	 * that useLayoutEffect applies after a zoom change.
-	 */
-	const prevZoomRef = useRef(zoomLevel);
-	const isZoomTransition = zoomLevel !== prevZoomRef.current;
-	const bufferPx = isZoomTransition
-		? Math.max(200, (scrollLeft + viewportWidth) * 0.15)
-		: 200;
-
-	useLayoutEffect(() => {
-		prevZoomRef.current = zoomLevel;
-	}, [zoomLevel]);
-
-	const visibleStartTimeSeconds = Math.max(
-		0,
-		(scrollLeft - bufferPx) / pixelsPerSecond,
-	);
-	const visibleEndTimeSeconds =
-		(scrollLeft + viewportWidth + bufferPx) / pixelsPerSecond;
-
-	const startTickIndex = Math.max(
-		0,
-		Math.floor(visibleStartTimeSeconds / tickIntervalSeconds),
-	);
-	const endTickIndex = Math.min(
-		tickCount - 1,
-		Math.ceil(visibleEndTimeSeconds / tickIntervalSeconds),
-	);
-
-	const timelineTicks: Array<JSX.Element> = [];
-	for (
-		let tickIndex = startTickIndex;
-		tickIndex <= endTickIndex;
-		tickIndex += 1
-	) {
-		const timeSeconds = tickIndex * tickIntervalSeconds;
-		if (timeSeconds > effectiveDurationSeconds) break;
-
-		const timeTicks = Math.round(timeSeconds * TICKS_PER_SECOND);
-		const showLabel = shouldShowLabel({ time: timeSeconds, labelIntervalSeconds });
-		timelineTicks.push(
-			<TimelineTick
-				key={tickIndex}
-				time={timeTicks}
-				timeInSeconds={timeSeconds}
-				zoomLevel={zoomLevel}
-				fps={fps}
-				showLabel={showLabel}
-			/>,
-		);
-	}
-
-	return (
-		<div
-			role="slider"
-			tabIndex={0}
-			aria-label="Timeline ruler"
-			aria-valuemin={0}
-			aria-valuemax={effectiveDurationSeconds}
-			aria-valuenow={0}
-			className="relative flex-1 overflow-x-visible"
-			style={{ height: TIMELINE_RULER_HEIGHT_PX }}
-			onWheel={handleWheel}
-			onClick={(event) => {
-				// Ruler seek already happens on mousedown via playhead scrubbing.
-				// Forwarding the follow-up click re-enters the selection-clearing path.
-				if (event.target === event.currentTarget) {
-					handleTimelineContentClick(event);
-				}
-			}}
-			onMouseDown={handleRulerTrackingMouseDown}
-			onKeyDown={() => {}}
-		>
-			<div
-				role="none"
-				ref={rulerRef}
-				className="relative cursor-default select-none"
-				style={{
-					height: TIMELINE_RULER_HEIGHT_PX,
-					width: `${dynamicTimelineWidth}px`,
-				}}
-				onMouseDown={handleRulerMouseDown}
-			>
-				{timelineTicks}
-			</div>
-		</div>
-	);
-}
-- 
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