From 99923b94d392c8c6fdfbc68c4754cd25e2c04977 Mon Sep 17 00:00:00 2001
From: Dan Walmsley <dan@walms.co.uk>
Date: Mon, 1 Oct 2018 20:41:43 +0100
Subject: [PATCH] implement window position changed.

---
 src/Avalonia.Native.OSX/window.mm     | 6 ++++++
 src/Avalonia.Native/WindowImplBase.cs | 5 +++++
 src/headers/avalonia-native.h         | 1 +
 3 files changed, 12 insertions(+)

diff --git a/src/Avalonia.Native.OSX/window.mm b/src/Avalonia.Native.OSX/window.mm
index 57dbec10e9..4fba1aee91 100644
--- a/src/Avalonia.Native.OSX/window.mm
+++ b/src/Avalonia.Native.OSX/window.mm
@@ -535,6 +535,12 @@ NSArray* AllLoopModes = [NSArray arrayWithObjects: NSDefaultRunLoopMode, NSEvent
     [super resignKeyWindow];
 }
 
+- (void)windowDidMove:(NSNotification *)notification
+{
+    AvnPoint position;
+    _parent->GetPosition(&position);
+    _parent->BaseEvents->PositionChanged(position);
+}
 @end
 
 class PopupImpl : public WindowBaseImpl, public IAvnPopup
diff --git a/src/Avalonia.Native/WindowImplBase.cs b/src/Avalonia.Native/WindowImplBase.cs
index 7a4f6d60d9..3b5b46c698 100644
--- a/src/Avalonia.Native/WindowImplBase.cs
+++ b/src/Avalonia.Native/WindowImplBase.cs
@@ -133,6 +133,11 @@ namespace Avalonia.Native
                 _parent.Resized?.Invoke(s);
             }
 
+            void IAvnWindowBaseEvents.PositionChanged(AvnPoint position)
+            {
+                _parent.PositionChanged?.Invoke(position.ToAvaloniaPoint());
+            }
+
             void IAvnWindowBaseEvents.RawMouseEvent(AvnRawMouseEventType type, uint timeStamp, AvnInputModifiers modifiers, AvnPoint point, AvnVector delta)
             {
                 _parent.RawMouseEvent(type, timeStamp, modifiers, point, delta);
diff --git a/src/headers/avalonia-native.h b/src/headers/avalonia-native.h
index 6743b0dc3e..3780d8c422 100644
--- a/src/headers/avalonia-native.h
+++ b/src/headers/avalonia-native.h
@@ -132,6 +132,7 @@ AVNCOM(IAvnWindowBaseEvents, 05) : IUnknown
     virtual void Activated() = 0;
     virtual void Deactivated() = 0;
     virtual void Resized(const AvnSize& size) = 0;
+    virtual void PositionChanged (AvnPoint position) = 0;
     virtual void RawMouseEvent (AvnRawMouseEventType type,
                                 unsigned int timeStamp,
                                 AvnInputModifiers modifiers,