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JSAMPLES.Z
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AniArea.java
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1998-05-08
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/*
* @(#)AniArea.java 1.8 96/12/06
*
* Copyright (c) 1994-1996 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.util.StringTokenizer;
import java.awt.Image;
import java.net.URL;
import java.net.MalformedURLException;
/**
* This ImageArea provides for a button that animates when the mouse is
* over it. The animation is specifed as a base image that contains all
* of the animation frames and then a series of X,Y coordinate pairs that
* define the top left corner of each new frame.
*
* @author Chuck McManis
* @version 1.8, 12/06/96
*/
class AniArea extends ImageMapArea {
Image sourceImage;
int nFrames;
int coords[];
int currentFrame = 0;
public void handleArg(String s) {
StringTokenizer st = new StringTokenizer(s, ", ");
int i;
String imgName;
imgName = st.nextToken();
try {
sourceImage = parent.getImage(new URL(parent.getDocumentBase(),
imgName));
parent.addImage(sourceImage);
} catch (MalformedURLException e) {}
nFrames = 0;
coords = new int[40];
while (st.hasMoreTokens()) {
coords[nFrames*2] = Integer.parseInt(st.nextToken());
coords[(nFrames*2)+1] = Integer.parseInt(st.nextToken());
nFrames++;
if (nFrames > 19)
break;
}
}
public boolean animate() {
if (entered) {
repaint();
}
return entered;
}
public void enter() {
currentFrame = 0;
parent.startAnimation();
}
public void highlight(Graphics g) {
if (entered) {
drawImage(g, sourceImage,
X-coords[currentFrame*2], Y-coords[(currentFrame*2)+1],
X, Y, W, H);
currentFrame++;
if (currentFrame >= nFrames)
currentFrame = 0;
}
}
}