Merge pull request AvaloniaUI#8405 from AvaloniaUI/fixes/8335-more-macos-window-issues

Fix more macos window issues and add more integration tests.

Author: danwalmsley

native/Avalonia.Native/src/OSX/WindowBaseImpl.mm

@@ -223,7 +223,7 @@
         if (ret == nullptr)
             return E_POINTER;
 
-        if(Window != nullptr){
+        if(Window != nullptr && _shown){
             auto frame = [Window frame];
             ret->Width = frame.size.width;
             ret->Height = frame.size.height;

native/Avalonia.Native/src/OSX/WindowImpl.mm

@@ -118,13 +118,16 @@
 {
     if(Window != nullptr)
     {
-        if(IsDialog())
+        if (![Window isMiniaturized])
         {
-            Activate();
-        }
-        else
-        {
-            [Window orderFront:nullptr];
+            if(IsDialog())
+            {
+                Activate();
+            }
+            else
+            {
+                [Window orderFront:nullptr];
+            }
         }
 
         [Window invalidateShadow];
@@ -487,6 +490,8 @@
         }
 
         if (_shown) {
+            _actualWindowState = _lastWindowState;
+
             switch (state) {
                 case Maximized:
                     if (currentState == FullScreen) {
@@ -544,7 +549,6 @@
                     break;
             }
 
-            _actualWindowState = _lastWindowState;
             WindowEvents->WindowStateChanged(_actualWindowState);
         }
 

src/Avalonia.Controls/Window.cs

@@ -902,10 +902,10 @@ Owner is Window ownerWindow &&
             {
                 if (owner != null)
                 {
-                    // TODO: We really need non-client size here.
+                    var ownerSize = owner.FrameSize ?? owner.ClientSize;
                     var ownerRect = new PixelRect(
                         owner.Position,
-                        PixelSize.FromSize(owner.ClientSize, scaling));
+                        PixelSize.FromSize(ownerSize, scaling));
                     Position = ownerRect.CenterRect(rect).Position;
                 }
             }