1/*
2 * Copyright (c) 2009-2010 jMonkeyEngine
3 * All rights reserved.
4 *
5 * Redistribution and use in source and binary forms, with or without
6 * modification, are permitted provided that the following conditions are
7 * met:
8 *
9 * * Redistributions of source code must retain the above copyright
10 *   notice, this list of conditions and the following disclaimer.
11 *
12 * * Redistributions in binary form must reproduce the above copyright
13 *   notice, this list of conditions and the following disclaimer in the
14 *   documentation and/or other materials provided with the distribution.
15 *
16 * * Neither the name of 'jMonkeyEngine' nor the names of its contributors
17 *   may be used to endorse or promote products derived from this software
18 *   without specific prior written permission.
19 *
20 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
21 * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
22 * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
23 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR
24 * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
25 * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
26 * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
27 * PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF
28 * LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
29 * NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
30 * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
31 */
32
33package com.jme3.input.lwjgl;
34
35import com.jme3.input.KeyInput;
36import com.jme3.input.RawInputListener;
37import com.jme3.input.event.KeyInputEvent;
38import com.jme3.system.lwjgl.LwjglAbstractDisplay;
39import com.jme3.system.lwjgl.LwjglTimer;
40import java.util.logging.Level;
41import java.util.logging.Logger;
42import org.lwjgl.LWJGLException;
43import org.lwjgl.Sys;
44import org.lwjgl.input.Keyboard;
45
46public class LwjglKeyInput implements KeyInput {
47
48    private static final Logger logger = Logger.getLogger(LwjglKeyInput.class.getName());
49
50    private LwjglAbstractDisplay context;
51
52    private RawInputListener listener;
53
54    public LwjglKeyInput(LwjglAbstractDisplay context){
55        this.context = context;
56    }
57
58    public void initialize() {
59        if (!context.isRenderable())
60            return;
61
62        try {
63            Keyboard.create();
64            Keyboard.enableRepeatEvents(true);
65            logger.info("Keyboard created.");
66        } catch (LWJGLException ex) {
67            logger.log(Level.SEVERE, "Error while creating keyboard.", ex);
68        }
69    }
70
71    public int getKeyCount(){
72        return Keyboard.KEYBOARD_SIZE;
73    }
74
75    public void update() {
76        if (!context.isRenderable())
77            return;
78
79        Keyboard.poll();
80        while (Keyboard.next()){
81            int keyCode = Keyboard.getEventKey();
82            char keyChar = Keyboard.getEventCharacter();
83            boolean pressed = Keyboard.getEventKeyState();
84            boolean down = Keyboard.isRepeatEvent();
85            long time = Keyboard.getEventNanoseconds();
86            KeyInputEvent evt = new KeyInputEvent(keyCode, keyChar, pressed, down);
87            evt.setTime(time);
88            listener.onKeyEvent(evt);
89        }
90    }
91
92    public void destroy() {
93        if (!context.isRenderable())
94            return;
95
96        Keyboard.destroy();
97        logger.info("Keyboard destroyed.");
98    }
99
100    public boolean isInitialized() {
101        return Keyboard.isCreated();
102    }
103
104    public void setInputListener(RawInputListener listener) {
105        this.listener = listener;
106    }
107
108    public long getInputTimeNanos() {
109        return Sys.getTime() * LwjglTimer.LWJGL_TIME_TO_NANOS;
110    }
111
112}
113