Various improvements to macOS platform

Source/Editor/GUI/Docking/DockHintWindow.cs

@@ -83,6 +83,7 @@ namespace FlaxEditor.GUI.Docking
             // Enable hit window presentation
             Proxy.Window.RenderingEnabled = true;
             Proxy.Window.Show();
+            Proxy.Window.Focus();
         }
 
         /// <summary>
@@ -270,15 +271,16 @@ namespace FlaxEditor.GUI.Docking
                 // Cache dock rectangles
                 var size = _rectDock.Size;
                 var offset = _rectDock.Location;
-                float BorderMargin = 4.0f;
+                var borderMargin = 4.0f;
-                float ProxyHintWindowsSize2 = Proxy.HintWindowsSize * 0.5f;
+                var hintWindowsSize = Proxy.HintWindowsSize * Platform.DpiScale;
-                float centerX = size.X * 0.5f;
+                var hintWindowsSize2 = hintWindowsSize * 0.5f;
-                float centerY = size.Y * 0.5f;
+                var centerX = size.X * 0.5f;
-                _rUpper = new Rectangle(centerX - ProxyHintWindowsSize2, BorderMargin, Proxy.HintWindowsSize, Proxy.HintWindowsSize) + offset;
+                var centerY = size.Y * 0.5f;
-                _rBottom = new Rectangle(centerX - ProxyHintWindowsSize2, size.Y - Proxy.HintWindowsSize - BorderMargin, Proxy.HintWindowsSize, Proxy.HintWindowsSize) + offset;
+                _rUpper = new Rectangle(centerX - hintWindowsSize2, borderMargin, hintWindowsSize, hintWindowsSize) + offset;
-                _rLeft = new Rectangle(BorderMargin, centerY - ProxyHintWindowsSize2, Proxy.HintWindowsSize, Proxy.HintWindowsSize) + offset;
+                _rBottom = new Rectangle(centerX - hintWindowsSize2, size.Y - hintWindowsSize - borderMargin, hintWindowsSize, hintWindowsSize) + offset;
-                _rRight = new Rectangle(size.X - Proxy.HintWindowsSize - BorderMargin, centerY - ProxyHintWindowsSize2, Proxy.HintWindowsSize, Proxy.HintWindowsSize) + offset;
+                _rLeft = new Rectangle(borderMargin, centerY - hintWindowsSize2, hintWindowsSize, hintWindowsSize) + offset;
-                _rCenter = new Rectangle(centerX - ProxyHintWindowsSize2, centerY - ProxyHintWindowsSize2, Proxy.HintWindowsSize, Proxy.HintWindowsSize) + offset;
+                _rRight = new Rectangle(size.X - hintWindowsSize - borderMargin, centerY - hintWindowsSize2, hintWindowsSize, hintWindowsSize) + offset;
+                _rCenter = new Rectangle(centerX - hintWindowsSize2, centerY - hintWindowsSize2, hintWindowsSize, hintWindowsSize) + offset;
 
                 // Hit test
                 DockState toSet = DockState.Float;
@@ -428,7 +430,6 @@ namespace FlaxEditor.GUI.Docking
             {
                 if (Window == null)
                 {
-                    // Create proxy window
                     var settings = CreateWindowSettings.Default;
                     settings.Title = "DockHint.Window";
                     settings.Size = initSize;
@@ -440,12 +441,10 @@ namespace FlaxEditor.GUI.Docking
                     settings.IsRegularWindow = false;
                     settings.SupportsTransparency = true;
                     settings.ShowInTaskbar = false;
-                    settings.ShowAfterFirstPaint = true;
+                    settings.ShowAfterFirstPaint = false;
                     settings.IsTopmost = true;
 
                     Window = Platform.CreateWindow(ref settings);
-
-                    // Set opacity and background color
                     Window.Opacity = 0.6f;
                     Window.GUI.BackgroundColor = Style.Current.DragWindow;
                 }
@@ -465,7 +464,7 @@ namespace FlaxEditor.GUI.Docking
 
                 var settings = CreateWindowSettings.Default;
                 settings.Title = name;
-                settings.Size = new Float2(HintWindowsSize);
+                settings.Size = new Float2(HintWindowsSize * Platform.DpiScale);
                 settings.AllowInput = false;
                 settings.AllowMaximize = false;
                 settings.AllowMinimize = false;
@@ -479,7 +478,6 @@ namespace FlaxEditor.GUI.Docking
                 settings.ShowAfterFirstPaint = false;
 
                 win = Platform.CreateWindow(ref settings);
-
                 win.Opacity = 0.6f;
                 win.GUI.BackgroundColor = Style.Current.DragWindow;
             }

Source/Engine/Platform/Linux/LinuxPlatform.cpp

@@ -2622,9 +2622,7 @@ bool LinuxPlatform::GetHasFocus()
 		if (window->IsFocused())
 			return true;
 	}
-
+	return false;
-	// Default to true if has no windows open
-    return WindowsManager::Windows.IsEmpty();
 }
 
 bool LinuxPlatform::CanOpenUrl(const StringView& url)

Source/Engine/Platform/Mac/MacWindow.cpp

@@ -710,6 +710,8 @@ MacWindow::MacWindow(const CreateWindowSettings& settings)
     {
         styleMask |= NSWindowStyleMaskBorderless;
     }
+    if (settings.Fullscreen)
+        styleMask |= NSWindowStyleMaskFullScreen;
     if (settings.HasBorder)
     {
         styleMask |= NSWindowStyleMaskTitled;
@@ -736,6 +738,7 @@ MacWindow::MacWindow(const CreateWindowSettings& settings)
     [window setMaxSize:NSMakeSize(settings.MaximumSize.X, settings.MaximumSize.Y)];
     [window setOpaque:!settings.SupportsTransparency];
     [window setContentView:view];
+    if (settings.AllowInput)
         [window setAcceptsMouseMovedEvents:YES];
     [window setDelegate:window];
     _window = window;
@@ -751,8 +754,6 @@ MacWindow::MacWindow(const CreateWindowSettings& settings)
 		layer.contentsScale = screenScale;
 
     // TODO: impl Parent for MacWindow
-    // TODO: impl StartPosition for MacWindow
-    // TODO: impl Fullscreen for MacWindow
     // TODO: impl ShowInTaskbar for MacWindow
     // TODO: impl IsTopmost for MacWindow
 }
@@ -816,7 +817,10 @@ void MacWindow::Show()
 
         // Show
         NSWindow* window = (NSWindow*)_window;
+        if (_settings.AllowInput)
             [window makeKeyAndOrderFront:window];
+        else
+            [window orderFront:window];
         if (_settings.ActivateWhenFirstShown)
             [NSApp activateIgnoringOtherApps:YES];
         _focused = true;
@@ -870,14 +874,9 @@ void MacWindow::Restore()
         [window zoom:nil];
 }
 
-bool MacWindow::IsClosed() const
-{
-    return _window != nullptr;
-}
-
 bool MacWindow::IsForegroundWindow() const
 {
-    return Platform::GetHasFocus() && IsFocused();
+    return IsFocused() && Platform::GetHasFocus();
 }
 
 void MacWindow::BringToFront(bool force)
@@ -1039,6 +1038,22 @@ DragDropEffect MacWindow::DoDragDrop(const StringView& data)
     return result;
 }
 
+void MacWindow::StartTrackingMouse(bool useMouseScreenOffset)
+{
+    if (_isTrackingMouse || !_window)
+        return;
+    _isTrackingMouse = true;
+    _trackingMouseOffset = Float2::Zero;
+    _isUsingMouseOffset = useMouseScreenOffset;
+}
+
+void MacWindow::EndTrackingMouse()
+{
+    if (!_isTrackingMouse || !_window)
+        return;
+    _isTrackingMouse = false;
+}
+
 void MacWindow::SetCursor(CursorType type)
 {
     CursorType prev = _cursor;

Source/Engine/Platform/Mac/MacWindow.h

@@ -13,14 +13,12 @@
 class FLAXENGINE_API MacWindow : public WindowBase
 {
 private:
-
     void* _window = nullptr;
     void* _view = nullptr;
     bool _isMouseOver = false;
     String _dragText;
 
 public:
-
 	MacWindow(const CreateWindowSettings& settings);
 	~MacWindow();
 
@@ -32,7 +30,6 @@ public:
     }
 
 public:
-
 	// [WindowBase]
     void* GetNativePtr() const override;
     void Show() override;
@@ -40,7 +37,6 @@ public:
     void Minimize() override;
     void Maximize() override;
     void Restore() override;
-    bool IsClosed() const override;
     bool IsForegroundWindow() const override;
     void BringToFront(bool force = false) override;
 	void SetClientBounds(const Rectangle& clientArea) override;
@@ -56,6 +52,8 @@ public:
     void Focus() override;
     void SetTitle(const StringView& title) override;
 	DragDropEffect DoDragDrop(const StringView& data) override;
+    void StartTrackingMouse(bool useMouseScreenOffset) override;
+    void EndTrackingMouse() override;
 	void SetCursor(CursorType type) override;
 };
 

Source/Engine/Platform/iOS/iOSPlatform.cpp

@@ -410,7 +410,7 @@ bool iOSWindow::IsClosed() const
 
 bool iOSWindow::IsForegroundWindow() const
 {
-    return Platform::GetHasFocus() && IsFocused();
+    return IsFocused() && Platform::GetHasFocus();
 }
 
 void iOSWindow::BringToFront(bool force)