From a3dd74fafab6ef7b95acbe56fad8f32a7e198748 Mon Sep 17 00:00:00 2001
From: boombuler <boombuler@gmail.com>
Date: Thu, 8 Mar 2018 07:27:35 +0100
Subject: [PATCH] only set the cursor if the mouse is over the toplevel

---
 src/OSX/Avalonia.MonoMac/TopLevelImpl.cs | 11 ++++++++++-
 1 file changed, 10 insertions(+), 1 deletion(-)

diff --git a/src/OSX/Avalonia.MonoMac/TopLevelImpl.cs b/src/OSX/Avalonia.MonoMac/TopLevelImpl.cs
index 9dc6c45745..a655bc1ec5 100644
--- a/src/OSX/Avalonia.MonoMac/TopLevelImpl.cs
+++ b/src/OSX/Avalonia.MonoMac/TopLevelImpl.cs
@@ -39,6 +39,7 @@ namespace Avalonia.MonoMac
             private NSTrackingArea _area;
             private NSCursor _cursor;
             private bool _nonUiRedrawQueued;
+            private bool _isMouseOver;
 
             public CGSize PixelSize { get; set; }
 
@@ -135,7 +136,8 @@ namespace Avalonia.MonoMac
                 if (_cursor != null)
                 {
                     AddCursorRect(Frame, _cursor);
-                    _cursor.Set();
+                    if (_isMouseOver)
+                        _cursor.Set();
                 }
             }
 
@@ -302,10 +304,17 @@ namespace Avalonia.MonoMac
 
             public override void MouseExited(NSEvent theEvent)
             {
+                _isMouseOver = false;
                 MouseEvent(theEvent, RawMouseEventType.LeaveWindow);
                 base.MouseExited(theEvent);
             }
 
+            public override void MouseEntered(NSEvent theEvent)
+            {
+                _isMouseOver = true;
+                base.MouseEntered(theEvent);
+            }
+
             void KeyboardEvent(RawKeyEventType type, NSEvent ev)
             {
                 var code = KeyTransform.TransformKeyCode(ev.KeyCode);