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/**
* Copyright (C) 2004 Jeremy Booth (jeremy@newdawnsoftware.com)
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions are met:
*
* Redistributions of source code must retain the above copyright notice, this
* list of conditions and the following disclaimer. Redistributions in binary
* form must reproduce the above copyright notice, this list of conditions and
* the following disclaimer in the documentation and/or other materials provided
* with the distribution.
* The name of the author may not be used to endorse or promote products derived
* from this software without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR IMPLIED
* WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
* MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO
* EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
* SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
* PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS;
* OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
* WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR
* OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF
* ADVISED OF THE POSSIBILITY OF SUCH DAMAGE
*/
package net.java.games.input;
import java.awt.AWTEvent;
import java.awt.Toolkit;
import java.awt.event.AWTEventListener;
import java.awt.event.KeyEvent;
import java.util.List;
import java.util.ArrayList;
import java.io.IOException;
import java.lang.reflect.Field;
import java.lang.reflect.Modifier;
/**
* @author Jeremy
* @author elias
*/
final class AWTKeyboard extends Keyboard implements AWTEventListener {
private final List awt_events = new ArrayList();
private Event[] processed_events;
private int processed_events_index;
protected AWTKeyboard() {
super("AWTKeyboard", createComponents(), new Controller[]{}, new Rumbler[]{});
Toolkit.getDefaultToolkit().addAWTEventListener(this, AWTEvent.KEY_EVENT_MASK);
resizeEventQueue(EVENT_QUEUE_DEPTH);
}
private final static Component[] createComponents() {
List components = new ArrayList();
Field[] vkey_fields = KeyEvent.class.getFields();
for (int i = 0; i < vkey_fields.length; i++) {
Field vkey_field = vkey_fields[i];
try {
if (Modifier.isStatic(vkey_field.getModifiers()) && vkey_field.getType() == int.class &&
vkey_field.getName().startsWith("VK_")) {
int vkey_code = vkey_field.getInt(null);
Component.Identifier.Key key_id = AWTKeyMap.mapKeyCode(vkey_code);
if (key_id != Component.Identifier.Key.UNKNOWN)
components.add(new Key(key_id));
}
} catch (IllegalAccessException e) {
throw new RuntimeException(e);
}
}
components.add(new Key(Component.Identifier.Key.RCONTROL));
components.add(new Key(Component.Identifier.Key.LCONTROL));
components.add(new Key(Component.Identifier.Key.RSHIFT));
components.add(new Key(Component.Identifier.Key.LSHIFT));
components.add(new Key(Component.Identifier.Key.RALT));
components.add(new Key(Component.Identifier.Key.LALT));
components.add(new Key(Component.Identifier.Key.NUMPADENTER));
components.add(new Key(Component.Identifier.Key.RETURN));
components.add(new Key(Component.Identifier.Key.NUMPADCOMMA));
components.add(new Key(Component.Identifier.Key.COMMA));
return (Component[])components.toArray(new Component[]{});
}
private final void resizeEventQueue(int size) {
processed_events = new Event[size];
for (int i = 0; i < processed_events.length; i++)
processed_events[i] = new Event();
processed_events_index = 0;
}
protected final void setDeviceEventQueueSize(int size) throws IOException {
resizeEventQueue(size);
}
public final synchronized void eventDispatched(AWTEvent event) {
if (event instanceof KeyEvent)
awt_events.add(event);
}
public final synchronized void pollDevice() throws IOException {
for (int i = 0; i < awt_events.size(); i++) {
KeyEvent event = (KeyEvent)awt_events.get(i);
processEvent(event);
}
awt_events.clear();
}
private final void processEvent(KeyEvent event) {
Component.Identifier.Key key_id = AWTKeyMap.map(event);
if (key_id == null)
return;
Key key = (Key)getComponent(key_id);
if (key == null)
return;
long nanos = event.getWhen()*1000000L;
if (event.getID() == KeyEvent.KEY_PRESSED) {
//the key was pressed
addEvent(key, 1, nanos);
} else if (event.getID() == KeyEvent.KEY_RELEASED) {
KeyEvent nextPress = (KeyEvent)Toolkit.getDefaultToolkit().getSystemEventQueue().peekEvent(KeyEvent.KEY_PRESSED);
if ((nextPress == null) || (nextPress.getWhen() != event.getWhen())) {
//the key came really came up
addEvent(key, 0, nanos);
}
}
}
private final void addEvent(Key key, float value, long nanos) {
key.setValue(value);
if (processed_events_index < processed_events.length)
processed_events[processed_events_index++].set(key, value, nanos);
}
protected final synchronized boolean getNextDeviceEvent(Event event) throws IOException {
if (processed_events_index == 0)
return false;
processed_events_index--;
event.set(processed_events[0]);
Event tmp = processed_events[0];
processed_events[0] = processed_events[processed_events_index];
processed_events[processed_events_index] = tmp;
return true;
}
private final static class Key extends AbstractComponent {
private float value;
public Key(Component.Identifier.Key key_id) {
super(key_id.getName(), key_id);
}
public final void setValue(float value) {
this.value = value;
}
protected final float poll() {
return value;
}
public final boolean isAnalog() {
return false;
}
public final boolean isRelative() {
return false;
}
}
}
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