/*
* @(#)DemoImages.java 1.21 06/08/29
*
* Copyright (c) 2006 Sun Microsystems, Inc. All Rights Reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions are met:
*
* -Redistribution of source code must retain the above copyright notice, this
* list of conditions and the following disclaimer.
*
* -Redistribution 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.
*
* Neither the name of Sun Microsystems, Inc. or the names of contributors may
* be used to endorse or promote products derived from this software without
* specific prior written permission.
*
* 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 MIDROSYSTEMS, INC. ("SUN")
* AND ITS LICENSORS SHALL NOT BE LIABLE FOR ANY DAMAGES SUFFERED BY LICENSEE
* AS A RESULT OF USING, MODIFYING OR DISTRIBUTING THIS 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 THIS SOFTWARE,
* EVEN IF SUN HAS BEEN ADVISED OF THE POSSIBILITY OF SUCH DAMAGES.
*
* You acknowledge that this software is not designed, licensed or intended
* for use in the design, construction, operation or maintenance of any
* nuclear facility.
*/
/*
* @(#)DemoImages.java 1.21 06/08/29
*/
package java2d;
import java.awt.*;
import java.awt.image.*;
import java.util.Map;
import java.util.concurrent.ConcurrentHashMap;
import java.net.URL;
import java.net.URLClassLoader;
/**
* A collection of all the demo images found in the images directory.
* Certain classes are preloaded; the rest are loaded lazily.
*/
public class DemoImages extends Component {
private static String[] names =
{
"java-logo.gif", "bld.jpg", "boat.png", "box.gif",
"boxwave.gif", "clouds.jpg", "duke.gif", "duke.running.gif",
"dukeplug.gif", "fight.gif", "globe.gif", "java_logo.png",
"jumptojavastrip.png", "magnify.gif", "painting.gif",
"remove.gif", "snooze.gif", "star7.gif", "surfing.gif",
"thumbsup.gif", "tip.gif", "duke.png", "print.gif",
"loop.gif", "looping.gif", "start.gif", "start2.gif",
"stop.gif", "stop2.gif", "clone.gif"
};
private static Map<String,Image> cache =
new ConcurrentHashMap<String,Image>(names.length);
public DemoImages() {
for (String name : names) {
cache.put(name, getImage(name, this));
}
}
/*
* Gets the named image using the toolkit of the specified component.
* Note that this has to work even before we have had a chance to
* instantiate DemoImages and preload the cache.
*/
public static Image getImage(String name, Component cmp) {
Image img = null;
if (cache != null) {
if ((img = cache.get(name)) != null) {
return img;
}
}
URLClassLoader urlLoader =
(URLClassLoader)cmp.getClass().getClassLoader();
URL fileLoc = urlLoader.findResource("images/" + name);
img = cmp.getToolkit().createImage(fileLoc);
MediaTracker tracker = new MediaTracker(cmp);
tracker.addImage(img, 0);
try {
tracker.waitForID(0);
if (tracker.isErrorAny()) {
System.out.println("Error loading image " + name);
}
} catch (Exception ex) { ex.printStackTrace(); }
return img;
}
}