Call ProcessRawEvent directly from the input manager

src/Avalonia.Input/IInputDevice.cs

@@ -1,9 +1,16 @@
 // Copyright (c) The Avalonia Project. All rights reserved.
 // Licensed under the MIT license. See licence.md file in the project root for full license information.
 
+using Avalonia.Input.Raw;
+
 namespace Avalonia.Input
 {
     public interface IInputDevice
     {
+        /// <summary>
+        /// Processes raw event. Is called after preprocessing by InputManager
+        /// </summary>
+        /// <param name="ev"></param>
+        void ProcessOwnRawEvent(RawInputEventArgs ev);
     }
 }

src/Avalonia.Input/InputManager.cs

@@ -35,6 +35,7 @@ namespace Avalonia.Input
         public void ProcessInput(RawInputEventArgs e)
         {
             _preProcess.OnNext(e);
+            e.Device?.ProcessOwnRawEvent(e);
             _process.OnNext(e);
             _postProcess.OnNext(e);
         }

src/Avalonia.Input/KeyboardDevice.cs

@@ -16,14 +16,6 @@ namespace Avalonia.Input
     {
         private IInputElement _focusedElement;
 
-        public KeyboardDevice()
-        {
-            InputManager.Process
-                .OfType<RawInputEventArgs>()
-                .Where(e => e.Device == this && !e.Handled)
-                .Subscribe(ProcessRawEvent);
-        }
-
         public event PropertyChangedEventHandler PropertyChanged;
 
         public static IKeyboardDevice Instance => AvaloniaLocator.Current.GetService<IKeyboardDevice>();
@@ -77,8 +69,10 @@ namespace Avalonia.Input
             PropertyChanged?.Invoke(this, new PropertyChangedEventArgs(propertyName));
         }
 
-        private void ProcessRawEvent(RawInputEventArgs e)
+        public void ProcessOwnRawEvent(RawInputEventArgs e)
         {
+            if(e.Handled)
+                return;
             IInputElement element = FocusedElement;
 
             if (element != null)

src/Avalonia.Input/MouseDevice.cs

@@ -20,18 +20,7 @@ namespace Avalonia.Input
         private int _clickCount;
         private Rect _lastClickRect;
         private uint _lastClickTime;
-
+       
-        /// <summary>
-        /// Intializes a new instance of <see cref="MouseDevice"/>.
-        /// </summary>
-        public MouseDevice()
-        {
-            InputManager.Process
-                .OfType<RawMouseEventArgs>()
-                .Where(e => e.Device == this && !e.Handled)
-                .Subscribe(ProcessRawEvent);
-        }
-        
         /// <summary>
         /// Gets the control that is currently capturing by the mouse, if any.
         /// </summary>
@@ -45,12 +34,7 @@ namespace Avalonia.Input
             get;
             protected set;
         }
-
+        
-        /// <summary>
-        /// Gets the application's input manager.
-        /// </summary>
-        public IInputManager InputManager => AvaloniaLocator.Current.GetService<IInputManager>();
-
         /// <summary>
         /// Gets the mouse position, in screen coordinates.
         /// </summary>
@@ -97,6 +81,12 @@ namespace Avalonia.Input
             return root.PointToClient(Position) - p;
         }
 
+        public void ProcessOwnRawEvent(RawInputEventArgs e)
+        {
+            if (!e.Handled && e is RawMouseEventArgs margs)
+                ProcessRawEvent(margs);
+        }
+
         private void ProcessRawEvent(RawMouseEventArgs e)
         {
             Contract.Requires<ArgumentNullException>(e != null);