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VCAFE.3.0A
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DelayedSoundArea.java
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1998-09-15
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/*
* @(#)DelayedSoundArea.java 1.9 98/03/18
*
* Copyright (c) 1995-1997 Sun Microsystems, Inc. All Rights Reserved.
*
* Sun grants you ("Licensee") a non-exclusive, royalty free, license to use,
* modify and redistribute this software in source and binary code form,
* provided that i) this copyright notice and license appear on all copies of
* the software; and ii) Licensee does not utilize the software in a manner
* which is disparaging to Sun.
*
* This software is provided "AS IS," without a warranty of any kind. ALL
* EXPRESS OR IMPLIED CONDITIONS, REPRESENTATIONS AND WARRANTIES, INCLUDING ANY
* IMPLIED WARRANTY OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE OR
* NON-INFRINGEMENT, ARE HEREBY EXCLUDED. SUN AND ITS LICENSORS SHALL NOT BE
* LIABLE FOR ANY DAMAGES SUFFERED BY LICENSEE AS A RESULT OF USING, MODIFYING
* OR DISTRIBUTING THE SOFTWARE OR ITS DERIVATIVES. IN NO EVENT WILL SUN OR ITS
* LICENSORS BE LIABLE FOR ANY LOST REVENUE, PROFIT OR DATA, OR FOR DIRECT,
* INDIRECT, SPECIAL, CONSEQUENTIAL, INCIDENTAL OR PUNITIVE DAMAGES, HOWEVER
* CAUSED AND REGARDLESS OF THE THEORY OF LIABILITY, ARISING OUT OF THE USE OF
* OR INABILITY TO USE SOFTWARE, EVEN IF SUN HAS BEEN ADVISED OF THE
* POSSIBILITY OF SUCH DAMAGES.
*
* This software is not designed or intended for use in on-line control of
* aircraft, air traffic, aircraft navigation or aircraft communications; or in
* the design, construction, operation or maintenance of any nuclear
* facility. Licensee represents and warrants that it will not use or
* redistribute the Software for such purposes.
*/
import java.awt.Graphics;
import java.applet.AudioClip;
import java.net.URL;
import java.net.MalformedURLException;
import java.util.StringTokenizer;
/**
* This ImageArea Class will play a sound each time the user enters the
* area. It is different from SoundArea in that it accepts a delay (in
* tenths of a second) before it plays the sound. If the mouse leaves
* the area before the time delay, the sound is not played.
*
* This allows you to have one piece of audio when the button is "hit"
* via SoundArea and another if the user stays on the button.
*
* @author Chuck McManis
* @version 1.9, 03/18/98
*/
class DelayedSoundArea extends ImageMapArea {
/** The URL of the sound to be played. */
URL sound;
AudioClip soundData;
boolean hasPlayed;
int delay;
int countDown;
/**
* The argument is the URL of the sound to be played.
* This method also sets this type of area to be non-terminal.
*/
public void handleArg(String arg) {
Thread soundLoader;
StringTokenizer st = new StringTokenizer(arg, ", ");
delay = Integer.parseInt(st.nextToken());
try {
sound = new URL(parent.getDocumentBase(), st.nextToken());
} catch (MalformedURLException e) {
sound = null;
}
}
public void getMedia() {
if (sound != null) {
soundData = parent.getAudioClip(sound);
}
if (soundData == null) {
System.out.println("DelayedSoundArea: Unable to load data "+sound);
}
}
/**
* The highlight method plays the sound in addition to the usual
* graphical highlight feedback.
*/
public void enter() {
hasPlayed = false;
countDown = delay;
parent.startAnimation();
}
/**
* This method is called every animation cycle if there are any
* active animating areas.
* @return true if this area requires further animation notifications
*/
public boolean animate() {
if (entered && ! hasPlayed) {
if (countDown > 0) {
countDown--;
return true;
}
hasPlayed = true;
if (soundData != null) {
soundData.play();
}
}
return false;
}
}