From a6cfe88c61bf971ce20fc6c9dabde5b3553a049e Mon Sep 17 00:00:00 2001
From: Dariusz Komosinski <darek.komosinski@gmail.com>
Date: Tue, 8 Jun 2021 23:40:40 +0200
Subject: [PATCH] Change ImmutableSolidColorBrush to a class.

---
 .../Media/Immutable/ImmutableSolidColorBrush.cs       | 11 ++++++-----
 1 file changed, 6 insertions(+), 5 deletions(-)

diff --git a/src/Avalonia.Visuals/Media/Immutable/ImmutableSolidColorBrush.cs b/src/Avalonia.Visuals/Media/Immutable/ImmutableSolidColorBrush.cs
index 010184ad3b..8e93ac580e 100644
--- a/src/Avalonia.Visuals/Media/Immutable/ImmutableSolidColorBrush.cs
+++ b/src/Avalonia.Visuals/Media/Immutable/ImmutableSolidColorBrush.cs
@@ -5,7 +5,7 @@ namespace Avalonia.Media.Immutable
     /// <summary>
     /// Fills an area with a solid color.
     /// </summary>
-    public readonly struct ImmutableSolidColorBrush : ISolidColorBrush, IEquatable<ImmutableSolidColorBrush>
+    public class ImmutableSolidColorBrush : ISolidColorBrush, IEquatable<ImmutableSolidColorBrush>
     {
         /// <summary>
         /// Initializes a new instance of the <see cref="ImmutableSolidColorBrush"/> class.
@@ -48,8 +48,9 @@ namespace Avalonia.Media.Immutable
 
         public bool Equals(ImmutableSolidColorBrush other)
         {
-            // ReSharper disable once CompareOfFloatsByEqualityOperator
-            return Color == other.Color && Opacity == other.Opacity;
+            if (ReferenceEquals(null, other)) return false;
+            if (ReferenceEquals(this, other)) return true;
+            return Color.Equals(other.Color) && Opacity.Equals(other.Opacity);
         }
 
         public override bool Equals(object obj)
@@ -67,12 +68,12 @@ namespace Avalonia.Media.Immutable
 
         public static bool operator ==(ImmutableSolidColorBrush left, ImmutableSolidColorBrush right)
         {
-            return left.Equals(right);
+            return Equals(left, right);
         }
 
         public static bool operator !=(ImmutableSolidColorBrush left, ImmutableSolidColorBrush right)
         {
-            return !left.Equals(right);
+            return !Equals(left, right);
         }
 
         /// <summary>