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      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 
     33 package com.jme3.input.lwjgl;
     34 
     35 import com.jme3.input.KeyInput;
     36 import com.jme3.input.RawInputListener;
     37 import com.jme3.input.event.KeyInputEvent;
     38 import com.jme3.system.lwjgl.LwjglAbstractDisplay;
     39 import com.jme3.system.lwjgl.LwjglTimer;
     40 import java.util.logging.Level;
     41 import java.util.logging.Logger;
     42 import org.lwjgl.LWJGLException;
     43 import org.lwjgl.Sys;
     44 import org.lwjgl.input.Keyboard;
     45 
     46 public 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