Opentk/Source/OpenTK/Platform/SDL2/Sdl2Keyboard.cs

#region License
//
// The Open Toolkit Library License
//
// Copyright (c) 2006 - 2013 Stefanos Apostolopoulos for 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 OpenTK.Input;

namespace OpenTK.Platform.SDL2
{
    class Sdl2Keyboard : IKeyboardDriver2
    {
        static readonly Sdl2KeyMap KeyMap = new Sdl2KeyMap();
        KeyboardState state;

        public Sdl2Keyboard()
        {
            state.IsConnected = true;
        }

        #region Public Members

        public void ProcessKeyboardEvent(SDL.SDL_KeyboardEvent e)
        {
            Key key;
            bool pressed = e.state != 0;
            if (KeyMap.TryGetValue(e.keysym.scancode, out key))
            {
                state.SetKeyState(key, (byte)e.keysym.scancode, pressed);
            }

            switch (e.keysym.mod)
            {
                case SDL.SDL_Keymod.KMOD_ALT:
                    state.SetKeyState(Key.AltLeft, (byte)e.keysym.scancode, pressed);
                    break;

                case SDL.SDL_Keymod.KMOD_CAPS:
                    state.SetKeyState(Key.CapsLock, (byte)e.keysym.scancode, pressed);
                    break;
            }
        }

        #endregion

        #region IKeyboardDriver2 Members

        public KeyboardState GetState()
        {
            return state;
        }

        public KeyboardState GetState(int index)
        {
            if (index == 0)
                return state;
            else
                return new KeyboardState();
        }

        public string GetDeviceName(int index)
        {
            return "SDL2 Default Keyboard";
        }

        #endregion
    }
}