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#region License
//
// The Open Toolkit Library License
//
// Copyright (c) 2006 - 2010 the Open Toolkit library.
//
// 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.Diagnostics;
using System.Runtime.InteropServices;
using System.Threading;
using OpenTK.Input;
namespace OpenTK.Platform.Windows
{
sealed class WinRawInput : WinInputBase
{
#region Fields
// Input event data.
static RawInput data = new RawInput();
WinRawKeyboard keyboard_driver;
WinRawMouse mouse_driver;
IGamePadDriver gamepad_driver;
IJoystickDriver2 joystick_driver;
IntPtr DevNotifyHandle;
static readonly Guid DeviceInterfaceHid = new Guid("4D1E55B2-F16F-11CF-88CB-001111000030");
#endregion
#region Constructors
public WinRawInput()
: base()
{
Debug.WriteLine("Using WinRawInput.");
}
#endregion
#region Private Members
static IntPtr RegisterForDeviceNotifications(WinWindowInfo parent)
{
IntPtr dev_notify_handle;
BroadcastDeviceInterface bdi = new BroadcastDeviceInterface();
bdi.Size = BlittableValueType.StrideOf(bdi);
bdi.DeviceType = DeviceBroadcastType.INTERFACE;
bdi.ClassGuid = DeviceInterfaceHid;
unsafe
{
dev_notify_handle = Functions.RegisterDeviceNotification(parent.Handle,
new IntPtr((void*)&bdi), DeviceNotification.WINDOW_HANDLE);
}
if (dev_notify_handle == IntPtr.Zero)
Debug.Print("[Warning] Failed to register for device notifications. Error: {0}", Marshal.GetLastWin32Error());
return dev_notify_handle;
}
#endregion
#region Protected Members
#region WindowProcedure
// Processes the input Windows Message, routing the buffer to the correct Keyboard, Mouse or HID.
protected override IntPtr WindowProcedure(
IntPtr handle, WindowMessage message, IntPtr wParam, IntPtr lParam)
{
switch (message)
{
case WindowMessage.INPUT:
int size = 0;
// Get the size of the input buffer
Functions.GetRawInputData(lParam, GetRawInputDataEnum.INPUT,
IntPtr.Zero, ref size, API.RawInputHeaderSize);
// Read the actual raw input structure
if (size == Functions.GetRawInputData(lParam, GetRawInputDataEnum.INPUT,
out data, ref size, API.RawInputHeaderSize))
{
switch (data.Header.Type)
{
case RawInputDeviceType.KEYBOARD:
if (((WinRawKeyboard)KeyboardDriver).ProcessKeyboardEvent(data))
return IntPtr.Zero;
break;
case RawInputDeviceType.MOUSE:
if (((WinRawMouse)MouseDriver).ProcessMouseEvent(data))
return IntPtr.Zero;
break;
case RawInputDeviceType.HID:
break;
}
}
break;
case WindowMessage.DEVICECHANGE:
((WinRawKeyboard)KeyboardDriver).RefreshDevices();
((WinRawMouse)MouseDriver).RefreshDevices();
((WinMMJoystick)JoystickDriver).RefreshDevices();
break;
}
return base.WindowProcedure(handle, message, wParam, lParam);
}
#endregion
#region CreateDrivers
protected override void CreateDrivers()
{
keyboard_driver = new WinRawKeyboard(Parent.Handle);
mouse_driver = new WinRawMouse(Parent.Handle);
joystick_driver = new WinMMJoystick();
try
{
gamepad_driver = new XInputJoystick();
}
catch (Exception)
{
Debug.Print("[Win] XInput driver not supported, falling back to WinMM");
gamepad_driver = new MappedGamePadDriver();
}
DevNotifyHandle = RegisterForDeviceNotifications(Parent);
}
#endregion
protected override void Dispose(bool manual)
{
if (!Disposed)
{
Functions.UnregisterDeviceNotification(DevNotifyHandle);
base.Dispose(manual);
}
}
#endregion
#region Public Members
#region DeviceCount
public static int DeviceCount
{
get
{
int deviceCount = 0;
Functions.GetRawInputDeviceList(null, ref deviceCount, API.RawInputDeviceListSize);
return deviceCount;
}
}
#endregion
#endregion
#region IInputDriver2 Members
public override IKeyboardDriver2 KeyboardDriver
{
get { return keyboard_driver; }
}
public override IMouseDriver2 MouseDriver
{
get { return mouse_driver; }
}
public override IGamePadDriver GamePadDriver
{
get { return gamepad_driver; }
}
public override IJoystickDriver2 JoystickDriver
{
get { return joystick_driver; }
}
#endregion
}
}