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