1 /* 2 * Copyright (c) 2007, 2017, Oracle and/or its affiliates. All rights reserved. 3 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. 4 * 5 * This code is free software; you can redistribute it and/or modify it 6 * under the terms of the GNU General Public License version 2 only, as 7 * published by the Free Software Foundation. 8 * 9 * This code is distributed in the hope that it will be useful, but WITHOUT 10 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or 11 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License 12 * version 2 for more details (a copy is included in the LICENSE file that 13 * accompanied this code). 14 * 15 * You should have received a copy of the GNU General Public License version 16 * 2 along with this work; if not, write to the Free Software Foundation, 17 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. 18 * 19 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA 20 * or visit www.oracle.com if you need additional information or have any 21 * questions. 22 */ 23 package org.jemmy.image; 24 25 26 import java.awt.Color; 27 import java.awt.image.BufferedImage; 28 import org.jemmy.image.pixel.AverageDistanceComparator; 29 import org.jemmy.image.pixel.MaxDistanceComparator; 30 31 32 /** 33 * Compares two images naturally 34 * (i.e. ignoring slight difference between pixel colors). 35 * 36 * @author KAM 37 */ 38 public class NaturalImageComparator extends BufferedImageComparator { 39 40 /** 41 * Creates comparator with the default sensitivity value = 0.02 42 * (around 5 in 0-255 color component value). 43 * @see #NaturalImageComparator(double) 44 */ 45 public NaturalImageComparator() { 46 this(0.02); 47 } 48 49 /** 50 * Creates comparator with the specified sensitivity value 51 * @param sensitivity Maximum threshold for 3-D distance between colors 52 * in 3-D sRGB color space for pixels to be considered equal. 53 * Meaningful values are between 0 and approx 1.733. 0 means colors should 54 * be equal to pass the comparison, 1.733 (which is more than square root 55 * of 3) means that comparison will be passed even if the colors are 56 * completely different. You could also use {@linkplain 57 * #findSensitivity(java.awt.image.BufferedImage, java.awt.image.BufferedImage) 58 * findSensitivity()} method to obtain necessary sensitivity value. 59 */ 60 public NaturalImageComparator(double sensitivity) { 61 super(new MaxDistanceComparator(sensitivity)); 62 } 63 public void setSensitivity(double sensitivity) { 64 ((MaxDistanceComparator)getRasterComparator()).setThreshold(sensitivity); 65 } 66 public double getSensitivity() { 67 return ((MaxDistanceComparator)getRasterComparator()).getThreshold(); 68 } 69 }