From 8db3bead13441a5882d8689dfc6a9f09c82375d9 Mon Sep 17 00:00:00 2001
From: Maze Winther <mazewinther@gmail.com>
Date: Wed, 25 Mar 2026 16:47:22 +0100
Subject: feat: masks, properties refactor, shaders, storage migrations, and
 more

---
 .../editor/panels/timeline/timeline-playhead.tsx   | 38 ++++++++++++++--------
 1 file changed, 25 insertions(+), 13 deletions(-)

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

diff --git a/apps/web/src/components/editor/panels/timeline/timeline-playhead.tsx b/apps/web/src/components/editor/panels/timeline/timeline-playhead.tsx
index e290259e..1abe65bd 100644
--- a/apps/web/src/components/editor/panels/timeline/timeline-playhead.tsx
+++ b/apps/web/src/components/editor/panels/timeline/timeline-playhead.tsx
@@ -8,9 +8,14 @@ import {
 } from "@/lib/timeline";
 import { useTimelinePlayhead } from "@/hooks/timeline/use-timeline-playhead";
 import { useEditor } from "@/hooks/use-editor";
+import {
+	TIMELINE_LAYERS,
+	TIMELINE_SCROLLBAR_SIZE_PX,
+} from "@/constants/timeline-constants";
 
 interface TimelinePlayheadProps {
 	zoomLevel: number;
+	hasHorizontalScrollbar: boolean;
 	rulerRef: React.RefObject<HTMLDivElement | null>;
 	rulerScrollRef: React.RefObject<HTMLDivElement | null>;
 	tracksScrollRef: React.RefObject<HTMLDivElement | null>;
@@ -21,6 +26,7 @@ interface TimelinePlayheadProps {
 
 export function TimelinePlayhead({
 	zoomLevel,
+	hasHorizontalScrollbar,
 	rulerRef,
 	rulerScrollRef,
 	tracksScrollRef,
@@ -33,7 +39,7 @@ export function TimelinePlayhead({
 	const internalPlayheadRef = useRef<HTMLDivElement>(null);
 	const playheadRef = externalPlayheadRef || internalPlayheadRef;
 
-	const { playheadPosition, handlePlayheadMouseDown } = useTimelinePlayhead({
+	const { handlePlayheadMouseDown } = useTimelinePlayhead({
 		zoomLevel,
 		rulerRef,
 		rulerScrollRef,
@@ -42,16 +48,23 @@ export function TimelinePlayhead({
 	});
 
 	const timelineContainerHeight =
-		tracksScrollRef.current?.clientHeight ??
 		timelineRef.current?.clientHeight ??
+		tracksScrollRef.current?.clientHeight ??
 		400;
-	const totalHeight = Math.max(0, timelineContainerHeight - 4);
+	const totalHeight = Math.max(
+		0,
+		timelineContainerHeight -
+			(hasHorizontalScrollbar ? TIMELINE_SCROLLBAR_SIZE_PX - 5 : 0),
+	);
 
+	const currentTime = editor.playback.getCurrentTime();
 	const centerPosition = timelineTimeToSnappedPixels({
-		time: playheadPosition,
+		time: currentTime,
 		zoomLevel,
 	});
-	const leftPosition = getCenteredLineLeft({ centerPixel: centerPosition });
+	const scrollLeft = tracksScrollRef.current?.scrollLeft ?? 0;
+	const leftPosition =
+		getCenteredLineLeft({ centerPixel: centerPosition }) - scrollLeft;
 
 	const handlePlayheadKeyDown = (
 		event: React.KeyboardEvent<HTMLDivElement>,
@@ -61,10 +74,8 @@ export function TimelinePlayhead({
 		event.preventDefault();
 		const step = 1 / Math.max(1, editor.project.getActive().settings.fps);
 		const direction = event.key === "ArrowRight" ? 1 : -1;
-		const nextTime = Math.max(
-			0,
-			Math.min(duration, playheadPosition + direction * step),
-		);
+		const now = editor.playback.getCurrentTime();
+		const nextTime = Math.max(0, Math.min(duration, now + direction * step));
 
 		editor.playback.seek({ time: nextTime });
 	};
@@ -76,23 +87,24 @@ export function TimelinePlayhead({
 			aria-label="Timeline playhead"
 			aria-valuemin={0}
 			aria-valuemax={duration}
-			aria-valuenow={playheadPosition}
+			aria-valuenow={currentTime}
 			tabIndex={0}
-			className="pointer-events-none absolute z-5"
+			className="pointer-events-none absolute"
 			style={{
 				left: `${leftPosition}px`,
 				top: 0,
 				height: `${totalHeight}px`,
 				width: `${TIMELINE_INDICATOR_LINE_WIDTH_PX}px`,
+				zIndex: TIMELINE_LAYERS.playhead,
 			}}
 			onKeyDown={handlePlayheadKeyDown}
 		>
-			<div className="bg-foreground pointer-events-none absolute left-0 h-full w-0.5" />
+			<div className="bg-primary pointer-events-none absolute left-0 h-full w-0.5" />
 
 			<button
 				type="button"
 				aria-label="Drag playhead"
-				className={`pointer-events-auto absolute top-1 left-1/2 size-3 -translate-x-1/2 transform cursor-col-resize rounded-full border-2 shadow-xs ${isSnappingToPlayhead ? "bg-foreground border-foreground" : "bg-foreground border-foreground/50"}`}
+				className={`pointer-events-auto absolute top-1 left-1/2 size-3 -translate-x-1/2 transform cursor-col-resize rounded-full border-2 shadow-xs ${isSnappingToPlayhead ? "bg-primary border-primary" : "bg-primary border-primary/50"}`}
 				onMouseDown={handlePlayheadMouseDown}
 			/>
 		</div>
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