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Java Source | 1998-05-08 | 2.9 KB | 82 lines |
- /*
- * @(#)HighlightFilter.java 1.4 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.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 1.4, 12/06/96
- */
- 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);
- }
- }
-
-