mirror of
https://github.com/Ryujinx/Opentk.git
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298 lines
9.3 KiB
C#
298 lines
9.3 KiB
C#
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#region License
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//
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// The Open Toolkit Library License
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//
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// Copyright (c) 2006 - 2008 the Open Toolkit library, except where noted.
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//
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// Permission is hereby granted, free of charge, to any person obtaining a copy
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// of this software and associated documentation files (the "Software"), to deal
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// in the Software without restriction, including without limitation the rights to
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// use, copy, modify, merge, publish, distribute, sublicense, and/or sell copies of
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// the Software, and to permit persons to whom the Software is furnished to do
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// so, subject to the following conditions:
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//
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// The above copyright notice and this permission notice shall be included in all
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// copies or substantial portions of the Software.
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//
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// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
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// EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES
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// OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
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// NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT
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// HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY,
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// WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
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// FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
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// OTHER DEALINGS IN THE SOFTWARE.
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//
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#endregion
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using System;
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using System.Collections.Generic;
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using System.Text;
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using System.Runtime.InteropServices;
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using OpenTK.Input;
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namespace OpenTK.Platform.Windows
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{
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sealed class WinMMJoystick : IJoystickDriver
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{
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#region Fields
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List<JoystickDevice> sticks = new List<JoystickDevice>();
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IList<JoystickDevice> sticks_readonly;
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bool disposed;
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#endregion
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#region Constructors
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public WinMMJoystick()
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{
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sticks_readonly = sticks.AsReadOnly();
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int number = 0, max_sticks = 25;
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while (number < max_sticks)
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{
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JoystickDevice<WinMMJoyDetails> stick = OpenJoystick(number++);
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if (stick != null)
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sticks.Add(stick);
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}
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}
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#endregion
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#region Private Members
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JoystickDevice<WinMMJoyDetails> OpenJoystick(int number)
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{
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JoystickDevice<WinMMJoyDetails> stick = null;
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JoyCaps caps;
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JoystickError result = UnsafeNativeMethods.joyGetDevCaps(number, out caps, JoyCaps.SizeInBytes);
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if (result != JoystickError.NoError)
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return null;
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stick = new JoystickDevice<WinMMJoyDetails>(number, caps.NumAxes, caps.NumButtons);
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stick.Details = new WinMMJoyDetails(caps.NumAxes);
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int axis = 0;
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if (axis < caps.NumAxes)
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{ stick.Details.Min[axis] = caps.XMin; stick.Details.Max[axis] = caps.XMax; axis++; }
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if (axis < caps.NumAxes)
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{ stick.Details.Min[axis] = caps.YMin; stick.Details.Max[axis] = caps.YMax; axis++; }
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if (axis < caps.NumAxes)
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{ stick.Details.Min[axis] = caps.ZMin; stick.Details.Max[axis] = caps.ZMax; axis++; }
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if (axis < caps.NumAxes)
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{ stick.Details.Min[axis] = caps.RMin; stick.Details.Max[axis] = caps.RMax; axis++; }
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if (axis < caps.NumAxes)
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{ stick.Details.Min[axis] = caps.UMin; stick.Details.Max[axis] = caps.UMax; axis++; }
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if (axis < caps.NumAxes)
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{ stick.Details.Min[axis] = caps.VMin; stick.Details.Max[axis] = caps.VMax; axis++; }
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return stick;
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}
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#endregion
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#region IJoystickDriver
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public int DeviceCount
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{
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get { return sticks.Count; }
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}
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public IList<JoystickDevice> Joysticks
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{
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get { return sticks_readonly; }
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}
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public void Poll()
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{
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foreach (JoystickDevice<WinMMJoyDetails> js in sticks)
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{
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JoyInfoEx info = new JoyInfoEx();
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info.Size = JoyInfoEx.SizeInBytes;
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info.Flags = JoystickFlags.All;
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UnsafeNativeMethods.joyGetPosEx(js.Id, ref info);
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int axis = 0;
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if (axis < js.Axis.Count)
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{ js.SetAxis(axis, js.Details.CalculateOffset((float)info.XPos, axis)); axis++; }
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if (axis < js.Axis.Count)
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{ js.SetAxis(axis, js.Details.CalculateOffset((float)info.YPos, axis)); axis++; }
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if (axis < js.Axis.Count)
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{ js.SetAxis(axis, js.Details.CalculateOffset((float)info.ZPos, axis)); axis++; }
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if (axis < js.Axis.Count)
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{ js.SetAxis(axis, js.Details.CalculateOffset((float)info.RPos, axis)); axis++; }
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if (axis < js.Axis.Count)
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{ js.SetAxis(axis, js.Details.CalculateOffset((float)info.UPos, axis)); axis++; }
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if (axis < js.Axis.Count)
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{ js.SetAxis(axis, js.Details.CalculateOffset((float)info.VPos, axis)); axis++; }
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int button = 0;
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while (button < js.Button.Count)
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{
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js.SetButton(button, (info.Buttons & (1 << button)) != 0);
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button++;
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}
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}
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}
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#endregion
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#region IDisposable
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public void Dispose()
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{
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Dispose(true);
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GC.SuppressFinalize(this);
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}
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void Dispose(bool manual)
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{
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if (!disposed)
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{
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if (manual)
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{
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}
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disposed = true;
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}
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}
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~WinMMJoystick()
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{
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Dispose(false);
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}
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#endregion
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#region UnsafeNativeMethods
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[Flags]
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enum JoystickFlags
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{
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X = 0x1,
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Y = 0x2,
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Z = 0x4,
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R = 0x8,
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U = 0x10,
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V = 0x20,
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Pov = 0x40,
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Buttons = 0x80,
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All = X | Y | Z | R | U | V | Pov | Buttons
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}
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enum JoystickError : uint
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{
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NoError = 0,
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InvalidParameters = 165,
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NoCanDo = 166,
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Unplugged = 167
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//MM_NoDriver = 6,
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//MM_InvalidParameter = 11
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}
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struct JoyCaps
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{
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public ushort Mid;
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public ushort Pid;
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[MarshalAs(UnmanagedType.ByValTStr, SizeConst = 32)]
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public string Pname;
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public int XMin;
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public int XMax;
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public int YMin;
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public int YMax;
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public int ZMin;
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public int ZMax;
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public int NumButtons;
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public int PeriodMin;
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public int PeriodMax;
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public int RMin;
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public int RMax;
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public int UMin;
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public int UMax;
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public int VMin;
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public int VMax;
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public int Caps;
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public int MaxAxes;
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public int NumAxes;
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public int MaxButtons;
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[MarshalAs(UnmanagedType.ByValTStr, SizeConst = 32)]
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public string RegKey;
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[MarshalAs(UnmanagedType.ByValTStr, SizeConst = 260)]
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public string OemVxD;
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public static readonly int SizeInBytes;
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static JoyCaps()
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{
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SizeInBytes = Marshal.SizeOf(default(JoyCaps));
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}
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}
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struct JoyInfoEx
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{
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public int Size;
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[MarshalAs(UnmanagedType.I4)]
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public JoystickFlags Flags;
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public int XPos;
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public int YPos;
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public int ZPos;
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public int RPos;
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public int UPos;
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public int VPos;
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public uint Buttons;
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public uint ButtonNumber;
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public int Pov;
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uint Reserved1;
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uint Reserved2;
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public static readonly int SizeInBytes;
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static JoyInfoEx()
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{
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SizeInBytes = Marshal.SizeOf(default(JoyInfoEx));
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}
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}
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static class UnsafeNativeMethods
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{
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[DllImport("Winmm.dll")]
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public static extern JoystickError joyGetDevCaps(int uJoyID, out JoyCaps pjc, int cbjc);
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[DllImport("Winmm.dll")]
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public static extern uint joyGetPosEx(int uJoyID, ref JoyInfoEx pji);
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}
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#endregion
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#region struct WinMMJoyDetails
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struct WinMMJoyDetails
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{
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public readonly float[] Min, Max; // Minimum and maximum offset of each axis.
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public WinMMJoyDetails(int num_axes)
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{
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Min = new float[num_axes];
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Max = new float[num_axes];
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}
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public float CalculateOffset(float pos, int axis)
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{
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float offset = (2 * (pos - Min[axis])) / (Max[axis] - Min[axis]) - 1;
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if (offset > 1)
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return 1;
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else if (offset < -1)
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return -1;
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else if (offset < 0.001f && offset > -0.001f)
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return 0;
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else
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return offset;
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}
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}
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#endregion
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}
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}
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