From 53b8c6dd285bf8aabd88c45f7d881d252a98daa9 Mon Sep 17 00:00:00 2001
From: Jumar Macato <16554748+jmacato@users.noreply.github.com>
Date: Tue, 2 Jul 2024 15:42:18 +0800
Subject: [PATCH] Reset scroller valuators on XI2Manager.cs (#16185)

When the focus is lost to avoid instant jumps when coming/scrolling from another linux window.
---
 src/Avalonia.X11/XI2Manager.cs | 5 +++++
 1 file changed, 5 insertions(+)

diff --git a/src/Avalonia.X11/XI2Manager.cs b/src/Avalonia.X11/XI2Manager.cs
index 84ac7f7c9d..e293e6f135 100644
--- a/src/Avalonia.X11/XI2Manager.cs
+++ b/src/Avalonia.X11/XI2Manager.cs
@@ -217,6 +217,11 @@ namespace Avalonia.X11
                      detail == XiEnterLeaveDetail.XINotifyVirtual)
                     && buttons == default)
                 {
+                    foreach (var scroller in _pointerDevice.Scrollers)
+                    {
+                       _pointerDevice.Valuators[scroller.Number].Value = 0;
+                    }
+                    
                     client.ScheduleXI2Input(new RawPointerEventArgs(client.MouseDevice, (ulong)ev.time.ToInt64(),
                         client.InputRoot,
                         RawPointerEventType.LeaveWindow, new Point(ev.event_x, ev.event_y), buttons));