/**
* Copyright (c) 2008-2012 Ardor Labs, Inc.
*
* This file is part of Ardor3D.
*
* Ardor3D is free software: you can redistribute it and/or modify it
* under the terms of its license which may be found in the accompanying
* LICENSE file or at <http://www.ardor3d.com/LICENSE>.
*/
package com.ardor3d.input.lwjgl;
import org.lwjgl.LWJGLException;
import org.lwjgl.input.Keyboard;
import com.ardor3d.input.Key;
import com.ardor3d.input.KeyEvent;
import com.ardor3d.input.KeyState;
import com.ardor3d.input.KeyboardWrapper;
import com.google.common.collect.AbstractIterator;
import com.google.common.collect.PeekingIterator;
/**
* Wraps the {@link org.lwjgl.input.Keyboard} class.
*/
public class LwjglKeyboardWrapper implements KeyboardWrapper {
private LwjglKeyEventIterator _currentIterator = null;
public void init() {
if (!Keyboard.isCreated()) {
try {
Keyboard.create();
} catch (final LWJGLException e) {
throw new RuntimeException(e);
}
}
}
public PeekingIterator<KeyEvent> getEvents() {
if (_currentIterator == null || !_currentIterator.hasNext()) {
_currentIterator = new LwjglKeyEventIterator();
}
return _currentIterator;
}
private static class LwjglKeyEventIterator extends AbstractIterator<KeyEvent> implements PeekingIterator<KeyEvent> {
@Override
protected KeyEvent computeNext() {
if (!Keyboard.next()) {
return endOfData();
}
final int keyCode = Keyboard.getEventKey();
final boolean pressed = Keyboard.getEventKeyState();
final char keyChar = Keyboard.getEventCharacter();
final Key k = LwjglKey.findByCode(keyCode);
return new KeyEvent(k, pressed ? KeyState.DOWN : KeyState.UP, keyChar);
}
}
}