From cebb745116a3a6507e4b5cbc4e64773814381bc2 Mon Sep 17 00:00:00 2001
From: Dominique Louis <dominique@DIPRAJ1.northamerica.corp.microsoft.com>
Date: Wed, 8 May 2019 19:39:55 +0100
Subject: [Mac] Setting the Formatter by default breaks the RatioEditor
 rendering.

---
 .../Controls/RatioEditorControl.cs                 |  9 ++------
 Xamarin.PropertyEditing.Mac/Extensions.cs          | 24 ++++++++++++++++++++++
 2 files changed, 26 insertions(+), 7 deletions(-)
 create mode 100644 Xamarin.PropertyEditing.Mac/Extensions.cs

(limited to 'Xamarin.PropertyEditing.Mac')

diff --git a/Xamarin.PropertyEditing.Mac/Controls/RatioEditorControl.cs b/Xamarin.PropertyEditing.Mac/Controls/RatioEditorControl.cs
index 2fd4404..7591c2b 100644
--- a/Xamarin.PropertyEditing.Mac/Controls/RatioEditorControl.cs
+++ b/Xamarin.PropertyEditing.Mac/Controls/RatioEditorControl.cs
@@ -15,13 +15,8 @@ namespace Xamarin.PropertyEditing.Mac
 		{
 			base.TranslatesAutoresizingMaskIntoConstraints = false;
 
-			this.ratioEditor = new RatioEditor<T> (hostResources) {
-				AllowNegativeValues = false,
-				AllowRatios = true,
-				BackgroundColor = NSColor.Clear,
-				StringValue = string.Empty,
-				TranslatesAutoresizingMaskIntoConstraints = false,
-			};
+			this.ratioEditor = new RatioEditor<T> (hostResources);
+			this.ratioEditor.SetFormatter (null);
 
 			// update the value on keypress
 			this.ratioEditor.ValueChanged += (sender, e) => {
diff --git a/Xamarin.PropertyEditing.Mac/Extensions.cs b/Xamarin.PropertyEditing.Mac/Extensions.cs
new file mode 100644
index 0000000..de9fdce
--- /dev/null
+++ b/Xamarin.PropertyEditing.Mac/Extensions.cs
@@ -0,0 +1,24 @@
+using System;
+using System.Runtime.InteropServices;
+using AppKit;
+using Foundation;
+
+namespace Xamarin.PropertyEditing.Mac
+{
+	internal static class Extensions
+	{
+		internal const string LIBOBJC_DYLIB = "/usr/lib/libobjc.dylib";
+
+		[DllImport (LIBOBJC_DYLIB, EntryPoint = "objc_msgSend")]
+		public extern static void void_objc_msgSend_intptr (IntPtr receiver, IntPtr selector, IntPtr arg1);
+
+		const string selSetFormatter = "setFormatter:";
+		static readonly IntPtr selSetFormatter_Handle = ObjCRuntime.Selector.GetHandle (selSetFormatter);
+
+		internal static void SetFormatter (this NumericSpinEditor control, NSFormatter formatter)
+		{
+			IntPtr pointer = formatter != null ? formatter.Handle : IntPtr.Zero;
+			void_objc_msgSend_intptr (control.NumericEditor.Handle, selSetFormatter_Handle, pointer);
+		}
+	}
+}
-- 
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