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 
  24 package org.jemmy.image.pixel;
  25 
  26 import org.jemmy.Dimension;
  27 
  28 /**
  29  *
  30  * @author shura
  31  */
  32 public abstract class BaseCountingRasterComparator extends ThresholdComparator {
  33 
  34     /**
  35      * 
  36      * @param threshold 
  37      */
  38     public BaseCountingRasterComparator(double threshold) {
  39         super(0, 1);
  40         setThreshold(threshold);
  41     }
  42 
  43     /**
  44      * 
  45      * @param image1
  46      * @param image2
  47      * @return
  48      */
  49     public boolean compare(Raster image1, Raster image2) {
  50         Dimension size = PixelImageComparator.computeDiffSize(image1, image2);
  51         if(size == null) {
  52             return false;
  53         }
  54         int totalPixels = size.width * size.height;
  55         int offPixels = 0;
  56         double[] colors1 = new double[image1.getSupported().length];
  57         double[] colors2 = new double[image2.getSupported().length];
  58         for (int x = 0; x < size.width; x++) {
  59             for (int y = 0; y < size.height; y++) {
  60                 image1.getColors(x, y, colors1);
  61                 image2.getColors(x, y, colors2);
  62                 if (!compare(image1.getSupported(), colors1,
  63                              image2.getSupported(), colors2)) {
  64                     offPixels++;
  65                 }
  66             }
  67         }
  68         return (offPixels <= totalPixels * getThreshold());
  69     }
  70     
  71     /**
  72      * 
  73      * @param comps1 
  74      * @param colors1 
  75      * @param comps2 
  76      * @param colors2 
  77      * @return
  78      */
  79     protected abstract boolean compare(Raster.Component[] comps1, double[] colors1, Raster.Component[] comps2, double[] colors2);
  80     
  81 }