From 011f51051c9750706978d6c89ce84dd15560c335 Mon Sep 17 00:00:00 2001
From: Maze Winther <mazewinther@gmail.com>
Date: Sat, 18 Apr 2026 01:40:18 +0200
Subject: feat: clip volume line and timeline waveform improvements

---
 apps/web/src/core/managers/timeline-manager.ts | 23 ++++++++++++++++++-----
 1 file changed, 18 insertions(+), 5 deletions(-)

(limited to 'apps/web/src/core/managers/timeline-manager.ts')

diff --git a/apps/web/src/core/managers/timeline-manager.ts b/apps/web/src/core/managers/timeline-manager.ts
index 898a7e89..c58128fb 100644
--- a/apps/web/src/core/managers/timeline-manager.ts
+++ b/apps/web/src/core/managers/timeline-manager.ts
@@ -712,18 +712,31 @@ export class TimelineManager {
 			updates: Partial<TimelineElement>;
 		}>;
 	}): void {
+		let changedOverlayCount = 0;
 		for (const { elementId, updates: elementUpdates } of updates) {
 			const existingOverlay = this.previewOverlay.get(elementId);
-			const mergedOverlay = {
-				...existingOverlay,
-				...elementUpdates,
-			} as Partial<TimelineElement>;
-			this.previewOverlay.set(elementId, mergedOverlay);
+			const changed = Object.entries(elementUpdates).some(([key, value]) => {
+				return !Object.is(
+					existingOverlay?.[key as keyof TimelineElement],
+					value,
+				);
+			});
+			if (changed) {
+				changedOverlayCount += 1;
+				const mergedOverlay = {
+					...existingOverlay,
+					...elementUpdates,
+				} as Partial<TimelineElement>;
+				this.previewOverlay.set(elementId, mergedOverlay);
+			}
 		}
 		const committedTracks = this.editor.scenes.getActiveSceneOrNull()?.tracks;
 		if (!committedTracks) {
 			return;
 		}
+		if (changedOverlayCount === 0) {
+			return;
+		}
 		this.previewTracks = this.applyPreviewOverlay(committedTracks);
 		this.notify();
 	}
-- 
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