119 lines
4.1 KiB
C#
119 lines
4.1 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 OpenTK.Input;
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namespace OpenTK.Platform.X11
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{
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// Standard keyboard driver that relies on xlib input events.
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// Only one keyboard supported.
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sealed class X11Keyboard : IKeyboardDriver2
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{
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readonly static string name = "Core X11 keyboard";
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readonly byte[] keys = new byte[32];
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readonly int KeysymsPerKeycode;
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readonly X11KeyMap KeyMap;
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KeyboardState state = new KeyboardState();
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public X11Keyboard()
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{
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Debug.WriteLine("Using X11Keyboard.");
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state.IsConnected = true;
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IntPtr display = API.DefaultDisplay;
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using (new XLock(display))
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{
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// Find the number of keysyms per keycode.
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int first = 0, last = 0;
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API.DisplayKeycodes(display, ref first, ref last);
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IntPtr keysym_ptr =
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API.GetKeyboardMapping(display,
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(byte)first,
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last - first + 1,
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ref KeysymsPerKeycode);
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Functions.XFree(keysym_ptr);
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if (Xkb.IsSupported(display))
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{
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// Request that auto-repeat is only set on devices that support it physically.
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// This typically means that it's turned off for keyboards what we want).
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// We prefer this method over XAutoRepeatOff/On, because the latter needs to
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// be reset before the program exits.
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bool supported;
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Xkb.SetDetectableAutoRepeat(display, true, out supported);
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KeyMap = new X11KeyMap(display);
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}
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}
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}
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public KeyboardState GetState()
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{
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ProcessEvents();
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return state;
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}
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public KeyboardState GetState(int index)
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{
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// X11Keyboard supports a single keyboard only
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ProcessEvents();
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if (index == 0)
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return state;
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else
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return new KeyboardState();
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}
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public string GetDeviceName(int index)
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{
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if (index == 0)
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return name;
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else
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return String.Empty;
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}
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void ProcessEvents()
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{
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IntPtr display = API.DefaultDisplay;
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using (new XLock(display))
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{
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Functions.XQueryKeymap(display, keys);
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for (int keycode = 0; keycode < 256; keycode++)
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{
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bool pressed = (keys[keycode >> 3] >> (keycode & 0x07) & 0x01) != 0;
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Key key;
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if (KeyMap.TranslateKey(keycode, out key))
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{
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state[key] = pressed;
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}
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}
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}
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}
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}
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}
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