v0.1

Subsurface/Source/EventInput/KeyboardDispatcher.cs

@@ -0,0 +1,85 @@
+using System;
+using System.Threading;
+using System.Windows;
+using Microsoft.Xna.Framework;
+using Microsoft.Xna.Framework.Input;
+
+namespace EventInput
+{
+    public interface IKeyboardSubscriber
+    {
+        void ReceiveTextInput(char inputChar);
+        void ReceiveTextInput(string text);
+        void ReceiveCommandInput(char command);
+        void ReceiveSpecialInput(Keys key);
+
+        bool Selected { get; set; } //or Focused
+    }
+
+    public class KeyboardDispatcher
+    {
+        public KeyboardDispatcher(GameWindow window)
+        {
+            EventInput.Initialize(window);
+            EventInput.CharEntered += EventInput_CharEntered;
+            EventInput.KeyDown += EventInput_KeyDown;
+        }
+
+        void EventInput_KeyDown(object sender, KeyEventArgs e)
+        {
+            if (_subscriber == null)
+                return;
+
+            _subscriber.ReceiveSpecialInput(e.KeyCode);
+        }
+
+        void EventInput_CharEntered(object sender, CharacterEventArgs e)
+        {
+            if (_subscriber == null)
+                return;
+            if (char.IsControl(e.Character))
+            {
+                //ctrl-v
+                if (e.Character == 0x16)
+                {
+                    //XNA runs in Multiple Thread Apartment state, which cannot recieve clipboard
+                    Thread thread = new Thread(PasteThread);
+                    thread.SetApartmentState(ApartmentState.STA);
+                    thread.Start();
+                    thread.Join();
+                    _subscriber.ReceiveTextInput(_pasteResult);
+                }
+                else
+                {
+                    _subscriber.ReceiveCommandInput(e.Character);
+                }
+            }
+            else
+            {
+                _subscriber.ReceiveTextInput(e.Character);
+            }
+        }
+
+        IKeyboardSubscriber _subscriber;
+        public IKeyboardSubscriber Subscriber
+        {
+            get { return _subscriber; }
+            set
+            {
+                if (_subscriber != null)
+                    _subscriber.Selected = false;
+                _subscriber = value;
+                if (value != null)
+                    value.Selected = true;
+            }
+        }
+
+        //Thread has to be in Single Thread Apartment state in order to receive clipboard
+        string _pasteResult = "";
+        [STAThread]
+        void PasteThread()
+        {
+            _pasteResult = Clipboard.ContainsText() ? Clipboard.GetText() : "";
+        }
+    }
+}