271 lines
9.7 KiB
C#
271 lines
9.7 KiB
C#
#region --- License ---
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/* Copyright (c) 2007 Stefanos Apostolopoulos
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* See license.txt for license info
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*/
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#endregion
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#region --- Using directives ---
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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 System.Diagnostics;
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using Microsoft.Win32;
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using OpenTK.Input;
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#endregion
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namespace OpenTK.Platform.Windows
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{
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internal class WinRawKeyboard : IKeyboardDriver, IDisposable
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{
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private List<KeyboardDevice> keyboards = new List<KeyboardDevice>();
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private IntPtr window;
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#region --- Constructors ---
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internal WinRawKeyboard()
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: this(IntPtr.Zero)
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{
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}
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internal WinRawKeyboard(IntPtr windowHandle)
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{
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Debug.WriteLine("Initializing keyboard driver (WinRawKeyboard).");
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Debug.Indent();
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this.window = windowHandle;
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UpdateKeyboardList();
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Debug.Unindent();
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}
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#endregion
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#region internal static void UpdateKeyboardList()
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internal void UpdateKeyboardList()
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{
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int count = WinRawInput.DeviceCount;
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RawInputDeviceList[] ridl = new RawInputDeviceList[count];
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for (int i = 0; i < count; i++)
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ridl[i] = new RawInputDeviceList();
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Functions.GetRawInputDeviceList(ridl, ref count, API.RawInputDeviceListSize);
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// Discover keyboard devices:
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for (int i = 0; i < count; i++)
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{
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uint size = 0;
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Functions.GetRawInputDeviceInfo(ridl[i].Device, RawInputDeviceInfoEnum.DEVICENAME, IntPtr.Zero, ref size);
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IntPtr name_ptr = Marshal.AllocHGlobal((IntPtr)size);
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Functions.GetRawInputDeviceInfo(ridl[i].Device, RawInputDeviceInfoEnum.DEVICENAME, name_ptr, ref size);
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string name = Marshal.PtrToStringAnsi(name_ptr);
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Marshal.FreeHGlobal(name_ptr);
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if (name.ToLower().Contains("root"))
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{
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// This is a terminal services device, skip it.
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continue;
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}
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else if (ridl[i].Type == RawInputDeviceType.KEYBOARD || ridl[i].Type == RawInputDeviceType.HID)
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{
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// This is a keyboard or USB keyboard device. In the latter case, discover if it really is a
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// keyboard device by qeurying the registry.
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// remove the \??\
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name = name.Substring(4);
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string[] split = name.Split('#');
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string id_01 = split[0]; // ACPI (Class code)
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string id_02 = split[1]; // PNP0303 (SubClass code)
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string id_03 = split[2]; // 3&13c0b0c5&0 (Protocol code)
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// The final part is the class GUID and is not needed here
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string findme = string.Format(
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@"System\CurrentControlSet\Enum\{0}\{1}\{2}",
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id_01, id_02, id_03);
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RegistryKey regkey = Registry.LocalMachine.OpenSubKey(findme);
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string deviceDesc =
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(string)regkey.GetValue("DeviceDesc");
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string deviceClass =
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(string)regkey.GetValue("Class");
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if (!String.IsNullOrEmpty(deviceClass) && deviceClass.ToLower().Equals("keyboard"))
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{
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KeyboardDevice kb = new KeyboardDevice();
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kb.Description = deviceDesc;
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// Register the keyboard:
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RawInputDeviceInfo info = new RawInputDeviceInfo();
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int devInfoSize = API.RawInputDeviceInfoSize;
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Functions.GetRawInputDeviceInfo(ridl[i].Device, RawInputDeviceInfoEnum.DEVICEINFO,
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info, ref devInfoSize);
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kb.NumberOfLeds = info.Device.Keyboard.NumberOfIndicators;
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kb.NumberOfFunctionKeys = info.Device.Keyboard.NumberOfFunctionKeys;
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kb.NumberOfKeys = info.Device.Keyboard.NumberOfKeysTotal;
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//kb.DeviceID = (info.Device.Keyboard.Type << 32) + info.Device.Keyboard.SubType;
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kb.DeviceID = ridl[i].Device;
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//if (!keyboards.Contains(kb))
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//{
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this.RegisterKeyboardDevice(kb);
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keyboards.Add(kb);
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//}
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}
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}
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}
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}
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#endregion
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#region internal void RegisterKeyboardDevice(Keyboard kb)
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internal void RegisterKeyboardDevice(KeyboardDevice kb)
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{
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RawInputDevice[] rid = new RawInputDevice[1];
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// Keyboard is 1/6 (page/id). See http://www.microsoft.com/whdc/device/input/HID_HWID.mspx
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rid[0] = new RawInputDevice();
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rid[0].UsagePage = 1;
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rid[0].Usage = 6;
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rid[0].Flags = RawInputDeviceFlags.INPUTSINK;
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rid[0].Target = window;
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if (!Functions.RegisterRawInputDevices(rid, 1, API.RawInputDeviceSize))
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{
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throw new ApplicationException(
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String.Format(
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"Raw input registration failed with error: {0}. Device: {1}",
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Marshal.GetLastWin32Error(),
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rid[0].ToString())
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);
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}
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else
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{
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Debug.Print("Registered keyboard {0}", kb.ToString());
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}
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}
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#endregion
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#region internal bool ProcessKeyboardEvent(API.RawInput rin)
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/// <summary>
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/// Processes raw input events.
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/// </summary>
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/// <param name="rin"></param>
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/// <returns></returns>
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internal bool ProcessKeyboardEvent(RawInput rin)
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{
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//Keyboard key = keyboards[0];
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//rin.Header.Device;
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switch (rin.Header.Type)
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{
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case RawInputDeviceType.KEYBOARD:
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bool pressed =
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rin.Data.Keyboard.Message == (int)WindowMessage.KEYDOWN ||
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rin.Data.Keyboard.Message == (int)WindowMessage.SYSKEYDOWN;
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// Find the device where the button was pressed. It can be that the input notification
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// came not from a physical keyboard device but from a code-generated input message - in
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// that case, the event goes to the default (first) keyboard.
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// TODO: Send the event to all keyboards instead of the default one.
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// TODO: Optimize this! The predicate allocates way to much memory.
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//int index = keyboards.FindIndex(delegate(KeyboardDevice kb)
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//{
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// return kb.DeviceID == rin.Header.Device;
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//});
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//if (index == -1) index = 0;
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int index;
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if (keyboards.Count > 0) index = 0;
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else return false;
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// Generic control, shift, alt keys may be sent instead of left/right.
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// It seems you have to explicitly register left/right events.
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switch (rin.Data.Keyboard.VKey)
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{
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case VirtualKeys.SHIFT:
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keyboards[index][Input.Key.ShiftLeft] = keyboards[index][Input.Key.ShiftRight] = pressed;
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return true;
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case VirtualKeys.CONTROL:
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keyboards[index][Input.Key.ControlLeft] = keyboards[index][Input.Key.ControlRight] = pressed;
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return true;
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case VirtualKeys.MENU:
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keyboards[index][Input.Key.AltLeft] = keyboards[index][Input.Key.AltRight] = pressed;
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return true;
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default:
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if (!WMInput.KeyMap.ContainsKey(rin.Data.Keyboard.VKey))
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Debug.Print("Virtual key {0} ({1}) not mapped.",
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rin.Data.Keyboard.VKey, (int)rin.Data.Keyboard.VKey);
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else
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keyboards[index][WMInput.KeyMap[rin.Data.Keyboard.VKey]] = pressed;
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return false;
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}
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default:
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throw new ApplicationException("Windows raw keyboard driver received invalid data.");
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}
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}
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#endregion
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#region --- IInputDevice Members ---
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public string Description
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{
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get { throw new Exception("The method or operation is not implemented."); }
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}
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public Input.InputDeviceType DeviceType
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{
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get { return Input.InputDeviceType.Keyboard; }
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}
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#endregion
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#region --- IKeyboardDriver Members ---
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public IList<KeyboardDevice> Keyboard
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{
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get { return keyboards; }
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}
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#endregion
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#region --- IDisposable Members ---
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private bool disposed;
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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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private 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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keyboards.Clear();
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}
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disposed = true;
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}
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}
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~WinRawKeyboard()
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{
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Dispose(false);
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}
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#endregion
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}
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}
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