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316 lines
12 KiB
C#
316 lines
12 KiB
C#
#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 - 2010 the Open Toolkit library.
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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.Diagnostics;
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using System.Runtime.InteropServices;
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using Microsoft.Win32;
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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 WinRawKeyboard : IKeyboardDriver2
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{
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static readonly WinKeyMap KeyMap = new WinKeyMap();
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readonly List<KeyboardState> keyboards = new List<KeyboardState>();
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readonly List<string> names = new List<string>();
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readonly Dictionary<ContextHandle, int> rawids = new Dictionary<ContextHandle, int>();
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readonly IntPtr window;
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readonly object UpdateLock = new object();
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#region Constructors
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public WinRawKeyboard(IntPtr windowHandle)
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{
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Debug.WriteLine("Using WinRawKeyboard.");
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Debug.Indent();
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this.window = windowHandle;
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RefreshDevices();
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Debug.Unindent();
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}
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#endregion
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#region Public Members
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public void RefreshDevices()
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{
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lock (UpdateLock)
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{
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for (int i = 0; i < keyboards.Count; i++)
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{
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KeyboardState state = keyboards[i];
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state.IsConnected = false;
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keyboards[i] = state;
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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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foreach (RawInputDeviceList dev in ridl)
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{
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ContextHandle id = new ContextHandle(dev.Device);
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if (rawids.ContainsKey(id))
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{
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// Device already registered, mark as connected
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KeyboardState state = keyboards[rawids[id]];
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state.IsConnected = true;
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keyboards[rawids[id]] = state;
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continue;
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}
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string name = GetDeviceName(dev);
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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 (dev.Type == RawInputDeviceType.KEYBOARD || dev.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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RegistryKey regkey = GetRegistryKey(name);
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string deviceDesc = (string)regkey.GetValue("DeviceDesc");
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string deviceClass = (string)regkey.GetValue("Class");
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string deviceClassGUID = (string)regkey.GetValue("ClassGUID"); // for windows 8 support via OpenTK issue 3198
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// making a guess at backwards compatability. Not sure what older windows returns in these cases...
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if(deviceClass != null || deviceClass.Equals(string.Empty)){
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RegistryKey classGUIDKey = Registry.LocalMachine.OpenSubKey(@"SYSTEM\CurrentControlSet\Control\Class\" + deviceClassGUID);
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deviceClass = classGUIDKey != null ? (string) classGUIDKey.GetValue("Class") : string.Empty;
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}
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if (String.IsNullOrEmpty(deviceDesc))
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{
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Debug.Print("[Warning] Failed to retrieve device description, skipping this device.");
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continue;
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}
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else
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{
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deviceDesc = deviceDesc.Substring(deviceDesc.LastIndexOf(';') + 1);
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}
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if (!String.IsNullOrEmpty(deviceClass) && deviceClass.ToLower().Equals("keyboard"))
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{
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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(dev.Device, RawInputDeviceInfoEnum.DEVICEINFO,
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info, ref devInfoSize);
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//KeyboardDevice kb = new KeyboardDevice();
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//kb.Description = deviceDesc;
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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 = dev.Device;
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RegisterKeyboardDevice(window, deviceDesc);
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KeyboardState state = new KeyboardState();
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state.IsConnected = true;
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keyboards.Add(state);
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names.Add(deviceDesc);
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rawids.Add(new ContextHandle(dev.Device), keyboards.Count - 1);
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}
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}
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}
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}
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}
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public bool ProcessKeyboardEvent(RawInput rin)
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{
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bool processed = false;
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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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ContextHandle handle = new ContextHandle(rin.Header.Device);
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KeyboardState keyboard;
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if (!rawids.ContainsKey(handle))
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{
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RefreshDevices();
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}
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if (keyboards.Count == 0)
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return false;
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// Note:For some reason, my Microsoft Digital 3000 keyboard reports 0
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// as rin.Header.Device for the "zoom-in/zoom-out" buttons.
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// That's problematic, because no device has a "0" id.
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// As a workaround, we'll add those buttons to the first device (if any).
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int keyboard_handle = rawids.ContainsKey(handle) ? rawids[handle] : 0;
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keyboard = keyboards[keyboard_handle];
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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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keyboard[Input.Key.ShiftLeft] = keyboard[Input.Key.ShiftRight] = pressed;
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processed = true;
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break;
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case VirtualKeys.CONTROL:
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keyboard[Input.Key.ControlLeft] = keyboard[Input.Key.ControlRight] = pressed;
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processed = true;
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break;
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case VirtualKeys.MENU:
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keyboard[Input.Key.AltLeft] = keyboard[Input.Key.AltRight] = pressed;
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processed = true;
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break;
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default:
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if (!KeyMap.ContainsKey(rin.Data.Keyboard.VKey))
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{
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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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}
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else
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{
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keyboard[KeyMap[rin.Data.Keyboard.VKey]] = pressed;
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processed = true;
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}
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break;
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}
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lock (UpdateLock)
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{
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keyboards[keyboard_handle] = keyboard;
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return processed;
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}
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}
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#endregion
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#region Private Members
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static RegistryKey GetRegistryKey(string name)
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{
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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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return regkey;
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}
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static string GetDeviceName(RawInputDeviceList dev)
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{
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uint size = 0;
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Functions.GetRawInputDeviceInfo(dev.Device, RawInputDeviceInfoEnum.DEVICENAME, IntPtr.Zero, ref size);
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IntPtr name_ptr = Marshal.AllocHGlobal((IntPtr)size);
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Functions.GetRawInputDeviceInfo(dev.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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return name;
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}
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static void RegisterKeyboardDevice(IntPtr window, string name)
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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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Debug.Print("[Warning] Raw input registration failed with error: {0}. Device: {1}",
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Marshal.GetLastWin32Error(), rid[0].ToString());
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}
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else
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{
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Debug.Print("Registered keyboard {0}", name);
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}
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}
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#endregion
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#region IKeyboardDriver2 Members
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public KeyboardState GetState()
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{
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lock (UpdateLock)
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{
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KeyboardState master = new KeyboardState();
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foreach (KeyboardState ks in keyboards)
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{
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master.MergeBits(ks);
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}
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return master;
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}
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}
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public KeyboardState GetState(int index)
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{
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lock (UpdateLock)
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{
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if (keyboards.Count > index)
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return keyboards[index];
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else
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return new KeyboardState();
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}
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}
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public string GetDeviceName(int index)
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{
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lock (UpdateLock)
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{
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if (names.Count > index)
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return names[index];
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else
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return String.Empty;
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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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