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Initial joystick support (not public yet).

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This commit is contained in:
the_fiddler 2009-02-28 23:11:27 +00:00
parent 837ea0d90c
commit 6118f4fdec
14 changed files with 801 additions and 60 deletions
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12
Source/OpenTK/Input/IInputDevice.cs
View file

@ -10,9 +10,19 @@ using System.Text;
namespace OpenTK.Input
{
/// <summary>
/// Defines a common interface for all input devices.
/// </summary>
public interface IInputDevice
{
/// <summary>
/// Gets a System.String with a unique description of this IInputDevice instance.
/// </summary>
string Description { get; }
/// <summary>
/// Gets an OpenTK.Input.InputDeviceType value, representing the device type of this IInputDevice instance.
/// </summary>
InputDeviceType DeviceType { get; }
}
@ -33,6 +43,6 @@ namespace OpenTK.Input
/// Device is a Human Interface Device. Joysticks, joypads, pens
/// and some specific usb keyboards/mice fall into this category.
/// </summary>
HID
Hid
}
}

3
Source/OpenTK/Input/IInputDriver.cs
View file

@ -10,9 +10,8 @@ using System.Text;
namespace OpenTK.Input
{
public interface IInputDriver : IKeyboardDriver, IMouseDriver, IDisposable
public interface IInputDriver : IKeyboardDriver, IMouseDriver, IJoystickDriver, IDisposable
{
//IList<IInputDevice> InputDevices { get; }
void Poll();
}
}

44
Source/OpenTK/Input/IJoystickDriver.cs Normal file
View file

@ -0,0 +1,44 @@
#region License
//
// The Open Toolkit Library License
//
// Copyright (c) 2006 - 2008 the Open Toolkit library, except where noted.
//
// Permission is hereby granted, free of charge, to any person obtaining a copy
// of this software and associated documentation files (the "Software"), to deal
// in the Software without restriction, including without limitation the rights to
// use, copy, modify, merge, publish, distribute, sublicense, and/or sell copies of
// the Software, and to permit persons to whom the Software is furnished to do
// so, subject to the following conditions:
//
// The above copyright notice and this permission notice shall be included in all
// copies or substantial portions of the Software.
//
// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
// EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES
// OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
// NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT
// HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY,
// WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
// FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
// OTHER DEALINGS IN THE SOFTWARE.
//
#endregion
using System;
using System.Collections.Generic;
using System.Text;
namespace OpenTK.Input
{
/// <summary>
/// Defines the interface for JoystickDevice drivers.
/// </summary>
public interface IJoystickDriver
{
/// <summary>
/// Gets the list of available JoystickDevices.
/// </summary>
IList<JoystickDevice> Joysticks { get; }
}
}

6
Source/OpenTK/Input/IKeyboardDriver.cs
View file

@ -10,8 +10,14 @@ using System.Text;
namespace OpenTK.Input
{
/// <summary>
/// Defines the interface for KeyboardDevice drivers.
/// </summary>
public interface IKeyboardDriver
{
/// <summary>
/// Gets the list of available KeyboardDevices.
/// </summary>
IList<KeyboardDevice> Keyboard { get; }
}
}

5
Source/OpenTK/Input/IMouseDriver.cs
View file

@ -10,10 +10,13 @@ using System.Text;
namespace OpenTK.Input
{
/// <summary>
/// Defines the interface for MouseDevice drivers.
/// </summary>
public interface IMouseDriver
{
/// <summary>
/// Gets the list of available mouse devices.
/// Gets the list of available MouseDevices.
/// </summary>
IList<MouseDevice> Mouse { get; }
}

28
Source/OpenTK/Input/InputDriver.cs
View file

@ -59,26 +59,38 @@ namespace OpenTK
#region --- IInputDriver Members ---
public void Poll()
{
inputDriver.Poll();
}
#endregion
#region --- IKeyboardDriver Members ---
public IList<KeyboardDevice> Keyboard
{
get { return inputDriver.Keyboard; }
}
#endregion
#region --- IMouseDriver Members ---
public IList<MouseDevice> Mouse
{
get { return inputDriver.Mouse; }
}
public void Poll()
#endregion
#region --- IJoystickDriver Members ---
public IList<JoystickDevice> Joysticks
{
inputDriver.Poll();
get { return inputDriver.Joysticks; }
}
/*
int IMouseDriver.RegisterDevices()
{
return inputDriver.RegisterDevices();
}
*/
#endregion
#region --- IDisposable Members ---

120
Source/OpenTK/Input/JoystickDevice.cs
View file

@ -1,49 +1,121 @@
using System;
#region License
//
// The Open Toolkit Library License
//
// Copyright (c) 2006 - 2008 the Open Toolkit library, except where noted.
//
// Permission is hereby granted, free of charge, to any person obtaining a copy
// of this software and associated documentation files (the "Software"), to deal
// in the Software without restriction, including without limitation the rights to
// use, copy, modify, merge, publish, distribute, sublicense, and/or sell copies of
// the Software, and to permit persons to whom the Software is furnished to do
// so, subject to the following conditions:
//
// The above copyright notice and this permission notice shall be included in all
// copies or substantial portions of the Software.
//
// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
// EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES
// OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
// NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT
// HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY,
// WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
// FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
// OTHER DEALINGS IN THE SOFTWARE.
//
#endregion
using System;
using System.Collections.Generic;
using System.Text;
using OpenTK.Math;
namespace OpenTK.Input
{
#if false
/// <summary>
/// Represents a joystick device and provides methods to query its state.
/// </summary>
public class JoystickDevice : IInputDevice
public abstract class JoystickDevice : IInputDevice
{
#region Fields
int id;
string description;
Vector2[] axis_position;
List<float> axis = new List<float>();
List<bool> button = new List<bool>();
IList<float> axis_readonly;
IList<bool> button_readonly;
#region --- IInputDevice Members ---
#endregion
/// <summary>
/// Gets a string describing this JoystickDevice.
/// </summary>
#region Constructors
internal JoystickDevice(int id, int axes, int buttons)
{
if (axes <= 0)
throw new ArgumentOutOfRangeException("axes");
if (buttons <= 0)
throw new ArgumentOutOfRangeException("buttons");
Id = id;
axis.AddRange(new float[axes]);
button.AddRange(new bool[buttons]);
axis_readonly = axis.AsReadOnly();
button_readonly = button.AsReadOnly();
}
#endregion
#region Public Members
public IList<float> Axis { get { return axis_readonly; } }
public IList<bool> Button { get { return button_readonly; } }
#endregion
#region IInputDevice Members
public string Description
{
get { return description; }
internal set { description = value; }
}
/// <summary>
/// Gets a value indicating the InputDeviceType of this InputDevice.
/// </summary>
public InputDeviceType DeviceType
{
get { return InputDeviceType.HID; }
get { return InputDeviceType.Hid; }
}
#endregion
#region --- Public Methods ---
#region Internal Members
//public Vector2 Axis1
//{
// get { return axis_position.Clone(); }
// internal set {
//}
internal int Id
{
get { return id; }
set { id = value; }
}
internal void SetAxis(int num, float @value)
{
axis[num] = @value;
}
internal void SetButton(int num, bool @value)
{
button[num] = @value;
}
#endregion
}
#endif
// Provides platform-specific information about the relevant JoystickDevice.
internal sealed class JoystickDevice<TDetail> : JoystickDevice
{
TDetail details;
internal JoystickDevice(int id, int axes, int buttons)
: base(id, axes, buttons)
{ }
internal TDetail Details { get { return details; } set { details = value; } }
}
}

13
Source/OpenTK/Platform/MacOS/CarbonInput.cs
View file

@ -11,13 +11,15 @@ namespace OpenTK.Platform.MacOS
{
List<KeyboardDevice> dummy_keyboard_list = new List<KeyboardDevice>(1);
List<MouseDevice> dummy_mice_list = new List<MouseDevice>(1);
List<JoystickDevice> dummy_joystick_list = new List<JoystickDevice>(1);
internal CarbonInput()
{
dummy_mice_list.Add(new MouseDevice());
dummy_keyboard_list.Add(new KeyboardDevice());
dummy_joystick_list.Add(new JoystickDevice<object>(0, 0, 0));
}
#region IInputDriver Members
public void Poll()
@ -44,6 +46,15 @@ namespace OpenTK.Platform.MacOS
#endregion
#region IJoystickDriver Members
public IList<JoystickDevice> Joysticks
{
get { return dummy_joystick_list; }
}
#endregion
#region IDisposable Members
public void Dispose()

24
Source/OpenTK/Platform/Windows/WMInput.cs
View file

@ -14,11 +14,12 @@ using System.Diagnostics;
namespace OpenTK.Platform.Windows
{
/// <summary>
/// Input driver for legacy (pre XP) Windows platforms.
/// </summary>
internal sealed class WMInput : NativeWindow, IInputDriver
// Input driver for legacy (pre XP) Windows platforms.
sealed class WMInput : NativeWindow, IInputDriver
{
#region --- Fields ---
WinMMJoystick joystick_driver = new WinMMJoystick();
// Driver supports only one keyboard and mouse;
KeyboardDevice keyboard = new KeyboardDevice();
MouseDevice mouse = new MouseDevice();
@ -30,6 +31,8 @@ namespace OpenTK.Platform.Windows
// Used to distinguish left and right shift keys.
static readonly uint ShiftRightScanCode = Functions.MapVirtualKey(VirtualKeys.RSHIFT, 0);
#endregion
#region --- Constructor ---
public WMInput(WinWindowInfo parent)
@ -224,6 +227,8 @@ namespace OpenTK.Platform.Windows
#endregion
#region --- IInputDriver Members ---
#region IInputDriver Members
public void Poll()
@ -251,6 +256,17 @@ namespace OpenTK.Platform.Windows
#endregion
#region IJoystickDriver Members
public IList<JoystickDevice> Joysticks
{
get { return joystick_driver.Joysticks; }
}
#endregion
#endregion
#region --- IDisposable Members ---
private bool disposed;

3
Source/OpenTK/Platform/Windows/WinFactory.cs
View file

@ -5,6 +5,7 @@ using System.Text;
namespace OpenTK.Platform.Windows
{
using Graphics;
using OpenTK.Input;
class WinFactory : IPlatformFactory
{
@ -25,7 +26,7 @@ namespace OpenTK.Platform.Windows
return new WinDisplayDeviceDriver();
}
public IGraphicsContext CreateGLContext(GraphicsMode mode, IWindowInfo window, IGraphicsContext shareContext, bool DirectRendering)
public IGraphicsContext CreateGLContext(GraphicsMode mode, IWindowInfo window, IGraphicsContext shareContext, bool directRendering)
{
return new WinGLContext(mode, window, shareContext);
}

297
Source/OpenTK/Platform/Windows/WinMMJoystick.cs Normal file
View file

@ -0,0 +1,297 @@
#region License
//
// The Open Toolkit Library License
//
// Copyright (c) 2006 - 2008 the Open Toolkit library, except where noted.
//
// Permission is hereby granted, free of charge, to any person obtaining a copy
// of this software and associated documentation files (the "Software"), to deal
// in the Software without restriction, including without limitation the rights to
// use, copy, modify, merge, publish, distribute, sublicense, and/or sell copies of
// the Software, and to permit persons to whom the Software is furnished to do
// so, subject to the following conditions:
//
// The above copyright notice and this permission notice shall be included in all
// copies or substantial portions of the Software.
//
// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
// EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES
// OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
// NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT
// HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY,
// WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
// FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
// OTHER DEALINGS IN THE SOFTWARE.
//
#endregion
using System;
using System.Collections.Generic;
using System.Text;
using System.Runtime.InteropServices;
using OpenTK.Input;
namespace OpenTK.Platform.Windows
{
sealed class WinMMJoystick : IJoystickDriver
{
#region Fields
List<JoystickDevice> sticks = new List<JoystickDevice>();
IList<JoystickDevice> sticks_readonly;
bool disposed;
#endregion
#region Constructors
public WinMMJoystick()
{
sticks_readonly = sticks.AsReadOnly();
int number = 0, max_sticks = 25;
while (number < max_sticks)
{
JoystickDevice<WinMMJoyDetails> stick = OpenJoystick(number++);
if (stick != null)
sticks.Add(stick);
}
}
#endregion
#region Private Members
JoystickDevice<WinMMJoyDetails> OpenJoystick(int number)
{
JoystickDevice<WinMMJoyDetails> stick = null;
JoyCaps caps;
JoystickError result = UnsafeNativeMethods.joyGetDevCaps(number, out caps, JoyCaps.SizeInBytes);
if (result != JoystickError.NoError)
return null;
stick = new JoystickDevice<WinMMJoyDetails>(number, caps.NumAxes, caps.NumButtons);
stick.Details = new WinMMJoyDetails(caps.NumAxes);
int axis = 0;
if (axis < caps.NumAxes)
{ stick.Details.Min[axis] = caps.XMin; stick.Details.Max[axis] = caps.XMax; axis++; }
if (axis < caps.NumAxes)
{ stick.Details.Min[axis] = caps.YMin; stick.Details.Max[axis] = caps.YMax; axis++; }
if (axis < caps.NumAxes)
{ stick.Details.Min[axis] = caps.ZMin; stick.Details.Max[axis] = caps.ZMax; axis++; }
if (axis < caps.NumAxes)
{ stick.Details.Min[axis] = caps.RMin; stick.Details.Max[axis] = caps.RMax; axis++; }
if (axis < caps.NumAxes)
{ stick.Details.Min[axis] = caps.UMin; stick.Details.Max[axis] = caps.UMax; axis++; }
if (axis < caps.NumAxes)
{ stick.Details.Min[axis] = caps.VMin; stick.Details.Max[axis] = caps.VMax; axis++; }
return stick;
}
#endregion
#region IJoystickDriver
public int DeviceCount
{
get { return sticks.Count; }
}
public IList<JoystickDevice> Joysticks
{
get { return sticks_readonly; }
}
public void Poll()
{
foreach (JoystickDevice<WinMMJoyDetails> js in sticks)
{
JoyInfoEx info = new JoyInfoEx();
info.Size = JoyInfoEx.SizeInBytes;
info.Flags = JoystickFlags.All;
UnsafeNativeMethods.joyGetPosEx(js.Id, ref info);
int axis = 0;
if (axis < js.Axis.Count)
{ js.SetAxis(axis, js.Details.CalculateOffset((float)info.XPos, axis)); axis++; }
if (axis < js.Axis.Count)
{ js.SetAxis(axis, js.Details.CalculateOffset((float)info.YPos, axis)); axis++; }
if (axis < js.Axis.Count)
{ js.SetAxis(axis, js.Details.CalculateOffset((float)info.ZPos, axis)); axis++; }
if (axis < js.Axis.Count)
{ js.SetAxis(axis, js.Details.CalculateOffset((float)info.RPos, axis)); axis++; }
if (axis < js.Axis.Count)
{ js.SetAxis(axis, js.Details.CalculateOffset((float)info.UPos, axis)); axis++; }
if (axis < js.Axis.Count)
{ js.SetAxis(axis, js.Details.CalculateOffset((float)info.VPos, axis)); axis++; }
int button = 0;
while (button < js.Button.Count)
{
js.SetButton(button, (info.Buttons & (1 << button)) != 0);
button++;
}
}
}
#endregion
#region IDisposable
public void Dispose()
{
Dispose(true);
GC.SuppressFinalize(this);
}
void Dispose(bool manual)
{
if (!disposed)
{
if (manual)
{
}
disposed = true;
}
}
~WinMMJoystick()
{
Dispose(false);
}
#endregion
#region UnsafeNativeMethods
[Flags]
enum JoystickFlags
{
X = 0x1,
Y = 0x2,
Z = 0x4,
R = 0x8,
U = 0x10,
V = 0x20,
Pov = 0x40,
Buttons = 0x80,
All = X | Y | Z | R | U | V | Pov | Buttons
}
enum JoystickError : uint
{
NoError = 0,
InvalidParameters = 165,
NoCanDo = 166,
Unplugged = 167
//MM_NoDriver = 6,
//MM_InvalidParameter = 11
}
struct JoyCaps
{
public ushort Mid;
public ushort Pid;
[MarshalAs(UnmanagedType.ByValTStr, SizeConst = 32)]
public string Pname;
public int XMin;
public int XMax;
public int YMin;
public int YMax;
public int ZMin;
public int ZMax;
public int NumButtons;
public int PeriodMin;
public int PeriodMax;
public int RMin;
public int RMax;
public int UMin;
public int UMax;
public int VMin;
public int VMax;
public int Caps;
public int MaxAxes;
public int NumAxes;
public int MaxButtons;
[MarshalAs(UnmanagedType.ByValTStr, SizeConst = 32)]
public string RegKey;
[MarshalAs(UnmanagedType.ByValTStr, SizeConst = 260)]
public string OemVxD;
public static readonly int SizeInBytes;
static JoyCaps()
{
SizeInBytes = Marshal.SizeOf(default(JoyCaps));
}
}
struct JoyInfoEx
{
public int Size;
[MarshalAs(UnmanagedType.I4)]
public JoystickFlags Flags;
public int XPos;
public int YPos;
public int ZPos;
public int RPos;
public int UPos;
public int VPos;
public uint Buttons;
public uint ButtonNumber;
public int Pov;
uint Reserved1;
uint Reserved2;
public static readonly int SizeInBytes;
static JoyInfoEx()
{
SizeInBytes = Marshal.SizeOf(default(JoyInfoEx));
}
}
static class UnsafeNativeMethods
{
[DllImport("Winmm.dll")]
public static extern JoystickError joyGetDevCaps(int uJoyID, out JoyCaps pjc, int cbjc);
[DllImport("Winmm.dll")]
public static extern uint joyGetPosEx(int uJoyID, ref JoyInfoEx pji);
}
#endregion
#region struct WinMMJoyDetails
struct WinMMJoyDetails
{
public readonly float[] Min, Max; // Minimum and maximum offset of each axis.
public WinMMJoyDetails(int num_axes)
{
Min = new float[num_axes];
Max = new float[num_axes];
}
public float CalculateOffset(float pos, int axis)
{
float offset = (2 * (pos - Min[axis])) / (Max[axis] - Min[axis]) - 1;
if (offset > 1)
return 1;
else if (offset < -1)
return -1;
else if (offset < 0.001f && offset > -0.001f)
return 0;
else
return offset;
}
}
#endregion
}
}

54
Source/OpenTK/Platform/Windows/WinRawInput.cs
View file

@ -18,16 +18,13 @@ using OpenTK.Input;
namespace OpenTK.Platform.Windows
{
internal class WinRawInput : NativeWindow, IInputDriver
// Not complete.
sealed class WinRawInput : NativeWindow, IInputDriver
{
/// <summary>
/// Input event data.
/// </summary>
private RawInput data = new RawInput();
/// <summary>
/// The total number of input devices connected to this system.
/// </summary>
private static int deviceCount;
// Input event data.
RawInput data = new RawInput();
// The total number of input devices connected to this system.
static int deviceCount;
int rawInputStructSize = API.RawInputSize;
private WinRawKeyboard keyboardDriver;
@ -134,15 +131,7 @@ namespace OpenTK.Platform.Windows
#region --- IInputDriver Members ---
public IList<KeyboardDevice> Keyboard
{
get { return keyboardDriver.Keyboard; }
}
public IList<MouseDevice> Mouse
{
get { return mouseDriver.Mouse; }
}
#region IInputDriver Members
public void Poll()
{
@ -211,6 +200,35 @@ namespace OpenTK.Platform.Windows
#endregion
#region IKeyboardDriver Members
public IList<KeyboardDevice> Keyboard
{
get { return keyboardDriver.Keyboard; }
}
#endregion
#region IMouseDriver Members
public IList<MouseDevice> Mouse
{
get { return mouseDriver.Mouse; }
}
#endregion
#region IJoystickDriver Members
public IList<JoystickDevice> Joysticks
{
get { throw new NotImplementedException(); }
}
#endregion
#endregion
#region --- IDisposable Members ---
private bool disposed;

9
Source/OpenTK/Platform/X11/X11Input.cs
View file

@ -226,6 +226,15 @@ namespace OpenTK.Platform.X11
#endregion
#region public IList<JoystickDevice> Joysticks
public IList<JoystickDevice> Joysticks
{
get { throw new NotImplementedException(); }
}
#endregion
#region public void Poll()
/// <summary>

243
Source/OpenTK/Platform/X11/X11Joystick.cs Normal file
View file

@ -0,0 +1,243 @@
#region License
//
// The Open Toolkit Library License
//
// Copyright (c) 2006 - 2008 the Open Toolkit library, except where noted.
//
// Permission is hereby granted, free of charge, to any person obtaining a copy
// of this software and associated documentation files (the "Software"), to deal
// in the Software without restriction, including without limitation the rights to
// use, copy, modify, merge, publish, distribute, sublicense, and/or sell copies of
// the Software, and to permit persons to whom the Software is furnished to do
// so, subject to the following conditions:
//
// The above copyright notice and this permission notice shall be included in all
// copies or substantial portions of the Software.
//
// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
// EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES
// OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
// NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT
// HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY,
// WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
// FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
// OTHER DEALINGS IN THE SOFTWARE.
//
#endregion
using System;
using System.Collections.Generic;
using System.Diagnostics;
using System.Runtime.InteropServices;
using OpenTK.Input;
namespace OpenTK.Platform.X11
{
struct X11JoyDetails { }
sealed class X11JoystickDriver : IJoystickDriver
{
#region Fields
List<JoystickDevice> sticks = new List<JoystickDevice>();
IList<JoystickDevice> sticks_readonly;
bool disposed;
#endregion
#region Constructors
public X11JoystickDriver()
{
sticks_readonly = sticks.AsReadOnly();
int number = 0, max_sticks = 25;
while (number < max_sticks)
{
JoystickDevice stick = OpenJoystick(JoystickPath, number++);
if (stick != null)
sticks.Add(stick);
}
number = 0;
while (number < max_sticks)
{
JoystickDevice stick = OpenJoystick(JoystickPathLegacy, number++);
if (stick != null)
sticks.Add(stick);
}
}
#endregion
#region IJoystickDriver
public int DeviceCount
{
get { return sticks.Count; }
}
public IList<JoystickDevice> Joysticks
{
get { return sticks_readonly; }
}
public void Poll()
{
JoystickEvent e;
foreach (JoystickDevice js in sticks)
{
unsafe
{
while ((long)UnsafeNativeMethods.read(js.Id, (void*)&e, (UIntPtr)sizeof(JoystickEvent)) > 0)
{
e.Type &= ~JoystickEventType.Init;
switch (e.Type)
{
case JoystickEventType.Axis:
js.SetAxis(e.Number, e.Value / 32767.0f);
break;
case JoystickEventType.Button:
js.SetButton(e.Number, e.Value != 0);
break;
}
}
}
}
}
#endregion
#region Private Members
JoystickDevice<X11JoyDetails> OpenJoystick(string base_path, int number)
{
string path = base_path + number.ToString();
JoystickDevice<X11JoyDetails> stick = null;
Debug.Write(String.Format("Attempting to open joystick {0}... ", path));
int fd = -1;
try
{
fd = UnsafeNativeMethods.open(path, OpenFlags.NonBlock);
if (fd == -1)
return null;
// Check joystick driver version (must be 1.0+)
int driver_version = 0x00000800;
UnsafeNativeMethods.ioctl(fd, JoystickIoctlCode.Version, ref driver_version);
if (driver_version < 0x00010000)
return null;
// Get number of joystick axes
int axes = 0;
UnsafeNativeMethods.ioctl(fd, JoystickIoctlCode.Axes, ref axes);
// Get number of joystick buttons
int buttons = 0;
UnsafeNativeMethods.ioctl(fd, JoystickIoctlCode.Buttons, ref buttons);
stick = new JoystickDevice<X11JoyDetails>(fd, axes, buttons);
}
finally
{
if (stick == null && fd != -1)
UnsafeNativeMethods.close(fd);
Debug.Print(stick != null ? "success!" : "failed.");
}
return stick;
}
#region UnsafeNativeMethods
struct JoystickEvent
{
public uint Time; // (u32) event timestamp in milliseconds
public short Value; // (s16) value
public JoystickEventType Type; // (u8) event type
public byte Number; // (u8) axis/button number
}
[Flags]
enum JoystickEventType : byte
{
Button = 0x01, // button pressed/released
Axis = 0x02, // joystick moved
Init = 0x80 // initial state of device
}
enum JoystickIoctlCode : uint
{
Version = 0x80046a01,
Axes = 0x80016a11,
Buttons = 0x80016a12
}
static readonly string JoystickPath = "/dev/input/js";
static readonly string JoystickPathLegacy = "/dev/js";
[Flags]
enum OpenFlags
{
NonBlock = 0x00000800
}
static class UnsafeNativeMethods
{
[DllImport("libc", SetLastError = true)]
public static extern int ioctl(int d, JoystickIoctlCode request, ref int data);
[DllImport("libc", SetLastError = true)]
public static extern int open([MarshalAs(UnmanagedType.LPStr)]string pathname, OpenFlags flags);
[DllImport("libc", SetLastError = true)]
public static extern int close(int fd);
[DllImport("libc", SetLastError = true)]
unsafe public static extern IntPtr read(int fd, void* buffer, UIntPtr count);
}
#endregion
#endregion
#region IDisposable Members
public void Dispose()
{
Dispose(true);
GC.SuppressFinalize(this);
}
void Dispose(bool manual)
{
if (!disposed)
{
if (manual)
{
}
foreach (JoystickDevice js in sticks)
{
UnsafeNativeMethods.close(js.Id);
}
disposed = true;
}
}
~X11JoystickDriver()
{
Dispose(false);
}
#endregion
}
}