From 3ee48b25e4ecd967227694f96a85a89aa36b4217 Mon Sep 17 00:00:00 2001
From: Steven Kirk <grokys@users.noreply.github.com>
Date: Wed, 23 Jan 2019 09:09:44 +0100
Subject: [PATCH] Fix image arrange.

`Image` was calculating its desired size correctly according to the value of `Stretch` but then was not applying that calculation to the arrange pass.

Fixes #2260
---
 src/Avalonia.Controls/Image.cs | 17 +++++++++++++++++
 1 file changed, 17 insertions(+)

diff --git a/src/Avalonia.Controls/Image.cs b/src/Avalonia.Controls/Image.cs
index 72379e7b53..c696fe7975 100644
--- a/src/Avalonia.Controls/Image.cs
+++ b/src/Avalonia.Controls/Image.cs
@@ -99,5 +99,22 @@ namespace Avalonia.Controls
                 return new Size();
             }
         }
+
+        /// <inheritdoc/>
+        protected override Size ArrangeOverride(Size finalSize)
+        {
+            var source = Source;
+
+            if (source != null)
+            {
+                var sourceSize = new Size(source.PixelSize.Width, source.PixelSize.Height);
+                var result = Stretch.CalculateSize(finalSize, sourceSize);
+                return result;
+            }
+            else
+            {
+                return new Size();
+            }
+        }
     }
 }