/*
* Copyright (c) 2003 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:
*
* -Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
*
* -Redistribution in binary form must reproduct 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 AND ITS LICENSORS SHALL NOT
* BE LIABLE FOR ANY DAMAGES OR LIABILITIES SUFFERED BY LICENSEE AS A RESULT
* OF OR RELATING TO USE, MODIFICATION OR DISTRIBUTION OF 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.
*
* You acknowledge that Software is not designed, licensed or intended for
* use in the design, construction, operation or maintenance of any nuclear
* facility.
*/
/*
* @(#)HighlightFilter.java 1.10 03/01/23
*/
import java.applet.Applet;
import java.awt.Image;
import java.awt.Graphics;
import java.awt.Rectangle;
import java.util.StringTokenizer;
import java.util.Vector;
import java.util.Hashtable;
import java.net.URL;
import java.awt.image.*;
import java.net.MalformedURLException;
/**
* An image filter to highlight an image by brightening or darkening
* the pixels in the images.
*
* @author Jim Graham
* @version 1.10, 01/23/03
*/
class HighlightFilter extends RGBImageFilter {
boolean brighter;
int percent;
public HighlightFilter(boolean b, int p) {
brighter = b;
percent = p;
canFilterIndexColorModel = true;
}
public int filterRGB(int x, int y, int rgb) {
int r = (rgb >> 16) & 0xff;
int g = (rgb >> 8) & 0xff;
int b = (rgb >> 0) & 0xff;
if (brighter) {
r = (255 - ((255 - r) * (100 - percent) / 100));
g = (255 - ((255 - g) * (100 - percent) / 100));
b = (255 - ((255 - b) * (100 - percent) / 100));
} else {
r = (r * (100 - percent) / 100);
g = (g * (100 - percent) / 100);
b = (b * (100 - percent) / 100);
}
if (r < 0) r = 0;
if (r > 255) r = 255;
if (g < 0) g = 0;
if (g > 255) g = 255;
if (b < 0) b = 0;
if (b > 255) b = 255;
return (rgb & 0xff000000) | (r << 16) | (g << 8) | (b << 0);
}
}
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