[Input] Added JoystickCapabilities.HatCount

Source/OpenTK/Input/JoystickCapabilities.cs

@@ -40,21 +40,23 @@ public struct JoystickCapabilities : IEquatable<JoystickCapabilities>
     {
         byte axis_count;
         byte button_count;
-        byte dpad_count;
+        byte hat_count;
         bool is_connected;
 
         #region Constructors
 
-        internal JoystickCapabilities(int axis_count, int button_count, bool is_connected)
+        internal JoystickCapabilities(int axis_count, int button_count, int hat_count, bool is_connected)
         {
-            if (axis_count < 0 || axis_count >= JoystickState.MaxAxes)
+            if (axis_count < 0 || axis_count > JoystickState.MaxAxes)
                 throw new ArgumentOutOfRangeException("axis_count");
-            if (button_count < 0 || button_count >= JoystickState.MaxButtons)
+            if (button_count < 0 || button_count > JoystickState.MaxButtons)
                 throw new ArgumentOutOfRangeException("axis_count");
+            if (hat_count < 0 || hat_count > JoystickState.MaxHats)
+                throw new ArgumentOutOfRangeException("hat_count");
 
             this.axis_count = (byte)axis_count;
             this.button_count = (byte)button_count;
-            this.dpad_count = 0; // Todo: either remove dpad_count or add it as a parameter
+            this.hat_count = (byte)hat_count;
             this.is_connected = is_connected;
         }
 
@@ -78,6 +80,14 @@ public int ButtonCount
             get { return button_count; }
         }
 
+        /// <summary>
+        /// Gets the number of hats supported by this <see cref="JoystickDevice"/>.
+        /// </summary>
+        public int HatCount
+        {
+            get { return hat_count; }
+        }
+
         /// <summary>
         /// Gets a value indicating whether this <see cref="JoystickDevice"/> is connected.
         /// </summary>
@@ -94,8 +104,8 @@ public bool IsConnected
         public override string ToString()
         {
             return String.Format(
-                "{{Axes: {0}; Buttons: {1}; IsConnected: {2}}}",
-                AxisCount, ButtonCount, IsConnected);
+                "{{Axes: {0}; Buttons: {1}; Hats: {2}; IsConnected: {2}}}",
+                AxisCount, ButtonCount, HatCount, IsConnected);
         }
 
         /// <summary>
@@ -108,6 +118,7 @@ public override int GetHashCode()
             return
                 AxisCount.GetHashCode() ^
                 ButtonCount.GetHashCode() ^
+                HatCount.GetHashCode() ^
                 IsConnected.GetHashCode();
         }
 
@@ -126,15 +137,6 @@ public override bool Equals(object obj)
 
         #endregion
 
-        #region Private Members
-
-        int DPadCount
-        {
-            get { return dpad_count; }
-        }
-
-        #endregion
-
         #region IEquatable<JoystickCapabilities> Members
 
         /// <summary>
@@ -148,6 +150,7 @@ public bool Equals(JoystickCapabilities other)
             return
                 AxisCount == other.AxisCount &&
                 ButtonCount == other.ButtonCount &&
+                HatCount == other.HatCount &&
                 IsConnected == other.IsConnected;
         }
 

Source/OpenTK/Platform/MacOS/HIDInput.cs

@@ -441,7 +441,7 @@ JoystickData CreateJoystick(IntPtr sender, IntPtr device)
                 joy = new JoystickData();
                 int axes = 0;
                 int buttons = 0;
-                int dpads = 0;
+                int hats = 0;
 
                 CFStringRef name_ref = NativeMethods.IOHIDDeviceGetProperty(device, NativeMethods.IOHIDProductKey);
                 string name = CF.CFStringGetCString(name_ref);
@@ -475,7 +475,7 @@ JoystickData CreateJoystick(IntPtr sender, IntPtr device)
                                     break;
 
                                 case HIDUsageGD.Hatswitch:
-                                    dpads++;
+                                    hats++;
                                     break;
                             }
                             break;
@@ -499,7 +499,7 @@ JoystickData CreateJoystick(IntPtr sender, IntPtr device)
                 joy.Name = name;
                 joy.Guid = guid;
                 joy.State.SetIsConnected(true);
-                joy.Capabilities = new JoystickCapabilities(axes, buttons, true);
+                joy.Capabilities = new JoystickCapabilities(axes, buttons, hats, true);
 
                 // Map button elements to JoystickButtons
                 for (int button = 0; button < button_elements.Count; button++)

Source/OpenTK/Platform/SDL2/Sdl2JoystickDriver.cs

@@ -656,6 +656,7 @@ JoystickCapabilities IJoystickDriver2.GetCapabilities(int index)
                 return new JoystickCapabilities(
                     joystick.Axis.Count,
                     joystick.Button.Count,
+                    joystick.Details.HatCount,
                     joystick.Details.IsConnected);
             }
             return new JoystickCapabilities();

Source/OpenTK/Platform/Windows/WinMMJoystick.cs

@@ -269,7 +269,10 @@ public JoystickCapabilities GetCapabilities(int index)
                 if (result == JoystickError.NoError)
                 {
                     JoystickCapabilities caps = new JoystickCapabilities(
-                        mmcaps.NumAxes, mmcaps.NumButtons, true);
+                        mmcaps.NumAxes,
+                        mmcaps.NumButtons,
+                        (mmcaps.Capabilities & JoystCapsFlags.HasPov) != 0 ? 1 : 0,
+                        true);
                     //if ((caps.Capabilities & JoystCapsFlags.HasPov) != 0)
                     //    gpcaps.DPadCount++;
                     return caps;

Source/OpenTK/Platform/X11/X11Joystick.cs

@@ -484,7 +484,10 @@ JoystickCapabilities IJoystickDriver2.GetCapabilities(int index)
             {
                 JoystickDevice<X11JoyDetails> js = sticks[index_to_stick[index]];
                 caps = new JoystickCapabilities(
-                    js.Axis.Count, js.Button.Count, js.Details.State.IsConnected);
+                    js.Axis.Count,
+                    js.Button.Count,
+                    0, // hats not supported by /dev/js
+                    js.Details.State.IsConnected);
             }
             return caps;
         }