From ac9a1fb697d4b8a69e7619bd19e563a6a6391edb Mon Sep 17 00:00:00 2001
From: Christopher Lees <leezer3@gmail.com>
Date: Tue, 11 Jul 2017 11:58:04 +0100
Subject: [PATCH] New: Add 4-position hat switches to Windows HID driver

---
 src/OpenTK/Platform/Windows/WinRawJoystick.cs | 18 ++++++++++++++++++
 1 file changed, 18 insertions(+)

diff --git a/src/OpenTK/Platform/Windows/WinRawJoystick.cs b/src/OpenTK/Platform/Windows/WinRawJoystick.cs
index 9bbe6b90..5003af44 100644
--- a/src/OpenTK/Platform/Windows/WinRawJoystick.cs
+++ b/src/OpenTK/Platform/Windows/WinRawJoystick.cs
@@ -341,6 +341,24 @@ namespace OpenTK.Platform.Windows
 
         HatPosition GetHatPosition(uint value, HidProtocolValueCaps caps)
         {
+            if (caps.LogicalMax == 3)
+            {
+                //4-way hat switch as per the example in Appendix C
+                //http://www.usb.org/developers/hidpage/Hut1_12v2.pdf
+                switch (value)
+                {
+                    case 0:
+                        return HatPosition.Left;
+                    case 1:
+                        return HatPosition.Up;
+                    case 2:
+                        return HatPosition.Right;
+                    case 3: 
+                        return HatPosition.Down;
+                    default:
+                        return HatPosition.Centered;
+                }
+            }
             if (caps.LogicalMax == 8)
             {
                 //Hat states are represented as a plain number from 0-8