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#region --- License ---
/* Copyright (c) 2006, 2007 Stefanos Apostolopoulos
* See license.txt for license info
*/
#endregion
#region --- Using directives ---
using System;
using System.Collections.Generic;
using System.Text;
using System.Runtime.InteropServices;
using System.Diagnostics;
using System.Windows.Forms;
using OpenTK.Input;
#endregion
namespace OpenTK
.Platform.Windows
{
// Not complete.
sealed class WinRawInput
: System.Windows.Forms.NativeWindow, IInputDriver
{
// 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
;
private WinRawMouse mouseDriver
;
#region --- Constructors ---
internal WinRawInput
(WinWindowInfo parent
)
{
Debug
.WriteLine("Initalizing windows raw input driver.");
Debug
.Indent();
AssignHandle
(parent
.WindowHandle);
Debug
.Print("Input window attached to parent {0}", parent
);
keyboardDriver
= new WinRawKeyboard
(this.Handle);
mouseDriver
= new WinRawMouse
(this.Handle);
Debug
.Unindent();
//AllocateBuffer();
}
#endregion
#region internal static int DeviceCount
internal static int DeviceCount
{
get
{
Functions
.GetRawInputDeviceList(null,
ref deviceCount, API
.RawInputDeviceListSize);
return deviceCount
;
}
}
#endregion
#region protected override void WndProc(ref Message msg)
/// <summary>
/// Processes the input Windows Message, routing the buffer to the correct Keyboard, Mouse or HID.
/// </summary>
/// <param name="msg">The WM_INPUT message, containing the buffer on the input event.</param>
protected override void WndProc
(ref Message msg
)
{
switch ((WindowMessage
)msg
.Msg)
{
case WindowMessage
.INPUT:
int size
= 0;
// Get the size of the input buffer
Functions
.GetRawInputData(msg
.LParam, GetRawInputDataEnum
.INPUT,
IntPtr
.Zero,
ref size, API
.RawInputHeaderSize);
//if (buffer == null || API.RawInputSize < size)
//{
// throw new ApplicationException("Critical error when processing raw windows input.");
//}
if (size
== Functions
.GetRawInputData(msg
.LParam, GetRawInputDataEnum
.INPUT,
out data,
ref size, API
.RawInputHeaderSize))
{
switch (data
.Header.Type)
{
case RawInputDeviceType
.KEYBOARD:
if (!keyboardDriver
.ProcessKeyboardEvent(data
))
Functions
.DefRawInputProc(ref data,
1,
(uint)API
.RawInputHeaderSize);
return;
case RawInputDeviceType
.MOUSE:
if (!mouseDriver
.ProcessEvent(data
))
Functions
.DefRawInputProc(ref data,
1,
(uint)API
.RawInputHeaderSize);
return;
case RawInputDeviceType
.HID:
Functions
.DefRawInputProc(ref data,
1,
(uint)API
.RawInputHeaderSize);
return;
default:
break;
}
}
else
{
throw new ApplicationException
(String.Format(
"GetRawInputData returned invalid buffer. Windows error {0}. Please file a bug at http://opentk.sourceforge.net",
Marshal
.GetLastWin32Error()));
}
break;
case WindowMessage
.DESTROY:
Debug
.Print("Input window detached from parent {0}.", Handle
);
ReleaseHandle
();
break;
case WindowMessage
.QUIT:
Debug
.WriteLine("Input window quit.");
this.Dispose();
break;
}
base.WndProc(ref msg
);
}
#endregion
#region --- IInputDriver Members ---
#region IInputDriver Members
public void Poll
()
{
return;
#if false
// We will do a buffered read for all input devices and route the RawInput structures
// to the correct 'ProcessData' handlers. First, we need to find out the size of the
// buffer to allocate for the structures. Then we allocate the buffer and read the
// structures, calling the correct handler for each one. Last, we free the allocated
// buffer.
int size
= 0;
Functions
.GetRawInputBuffer(IntPtr
.Zero,
ref size, API
.RawInputHeaderSize);
size
*= 256;
IntPtr rin_data
= Marshal
.AllocHGlobal(size
);
while (true)
{
// Iterate reading all available RawInput structures and routing them to their respective
// handlers.
int num
= Functions
.GetRawInputBuffer(rin_data,
ref size, API
.RawInputHeaderSize);
if (num
== 0)
break;
else if (num
< 0)
{
/*int error = Marshal.GetLastWin32Error();
if (error == 122)
{
// Enlarge the buffer, it was too small.
AllocateBuffer();
}
else
{
throw new ApplicationException(String.Format(
"GetRawInputBuffer failed with code: {0}", error));
}*/
Debug
.Print("GetRawInputBuffer failed with code: {0}", Marshal
.GetLastWin32Error());
//AllocateBuffer();
break;
}
RawInput
[] rin_structs
= new RawInput
[num
];
IntPtr next_rin
= rin_data
;
for (int i
= 0; i
< num
; i
++)
{
rin_structs
[i
] = (RawInput
)Marshal
.PtrToStructure(next_rin,
typeof(RawInput
));
switch (rin_structs
[i
].Header.Type)
{
case RawInputDeviceType
.KEYBOARD:
keyboardDriver
.ProcessKeyboardEvent(rin_structs
[i
]);
break;
case RawInputDeviceType
.MOUSE:
mouseDriver
.ProcessEvent(rin_structs
[i
]);
break;
}
next_rin
= Functions
.NextRawInputStructure(next_rin
);
}
Functions
.DefRawInputProc(rin_structs, num,
(uint)API
.RawInputHeaderSize);
}
Marshal
.FreeHGlobal(rin_data
);
#endif
}
#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
;
public void Dispose
()
{
Dispose
(true);
GC
.SuppressFinalize(this);
}
private void Dispose
(bool manual
)
{
if (!disposed
)
{
if (manual
)
{
keyboardDriver
.Dispose();
this.ReleaseHandle();
}
disposed
= true;
}
}
~WinRawInput
()
{
Dispose
(false);
}
#endregion
}
}