From 5d8f54ac42419ea23161a1a53a8948360acdaf6a Mon Sep 17 00:00:00 2001
From: Dariusz Komosinski <darek.komosinski@gmail.com>
Date: Thu, 9 Jul 2020 23:12:05 +0200
Subject: [PATCH] Fix hardcoded thumb min length.

---
 src/Avalonia.Controls/Primitives/Track.cs | 9 +++++++++
 1 file changed, 9 insertions(+)

diff --git a/src/Avalonia.Controls/Primitives/Track.cs b/src/Avalonia.Controls/Primitives/Track.cs
index c91adaa26e..29e7f28b44 100644
--- a/src/Avalonia.Controls/Primitives/Track.cs
+++ b/src/Avalonia.Controls/Primitives/Track.cs
@@ -353,6 +353,15 @@ namespace Avalonia.Controls.Primitives
             var trackLength = isVertical ? arrangeSize.Height : arrangeSize.Width;
             double thumbMinLength = 10;
 
+            StyledProperty<double> minLengthProperty = isVertical ? MinHeightProperty : MinWidthProperty;
+
+            var thumb = Thumb;
+
+            if (thumb != null && thumb.IsSet(minLengthProperty))
+            {
+                thumbMinLength = thumb.GetValue(minLengthProperty);
+            }
+
             thumbLength = trackLength * viewportSize / extent;
             CoerceLength(ref thumbLength, trackLength);
             thumbLength = Math.Max(thumbMinLength, thumbLength);