From ed78be825f9a988df3920fdbda730120bebfe125 Mon Sep 17 00:00:00 2001
From: Dean Herbert <pe@ppy.sh>
Date: Fri, 15 Jan 2021 15:47:41 +0900
Subject: [PATCH] Fix editor timeline not snapping on non-precise wheel scroll

For wheel input with precision, we still prefer exact tracking for now.
May change this in the future based on feedback from mappers, but it
makes little sense to do non-snapped scrolling when input is coming from
a non-precise source.
---
 .../Screens/Edit/Compose/Components/Timeline/Timeline.cs | 9 +++++++++
 1 file changed, 9 insertions(+)

diff --git a/osu.Game/Screens/Edit/Compose/Components/Timeline/Timeline.cs b/osu.Game/Screens/Edit/Compose/Components/Timeline/Timeline.cs
index 20836c0e68..12f7625bf9 100644
--- a/osu.Game/Screens/Edit/Compose/Components/Timeline/Timeline.cs
+++ b/osu.Game/Screens/Edit/Compose/Components/Timeline/Timeline.cs
@@ -138,6 +138,15 @@ namespace osu.Game.Screens.Edit.Compose.Components.Timeline
                 scrollToTrackTime();
         }
 
+        protected override bool OnScroll(ScrollEvent e)
+        {
+            // if this is not a precision scroll event, let the editor handle the seek itself (for snapping support)
+            if (!e.AltPressed && !e.IsPrecise)
+                return false;
+
+            return base.OnScroll(e);
+        }
+
         protected override void UpdateAfterChildren()
         {
             base.UpdateAfterChildren();