1/*
2 * Copyright (c) 1997, 2016, 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 */
23package org.netbeans.jemmy.image;
24
25import java.awt.Point;
26import java.awt.image.BufferedImage;
27
28/**
29 * Performs "strict" (i.e. based on all pixels matching) image search.
30 *
31 * @author Alexandre Iline (alexandre.iline@oracle.com)
32 */
33public class StrictImageFinder implements ImageFinder {
34
35    int bigWidth, bigHeight;
36    int[][] bigPixels;
37
38    /**
39     * Creates an instance searching subimages insige a parameter image.
40     *
41     * @param area - Image to search in.
42     */
43    public StrictImageFinder(BufferedImage area) {
44        bigWidth = area.getWidth();
45        bigHeight = area.getHeight();
46        bigPixels = new int[bigWidth][bigHeight];
47        for (int x = 0; x < bigWidth; x++) {
48            for (int y = 0; y < bigHeight; y++) {
49                bigPixels[x][y] = area.getRGB(x, y);
50            }
51        }
52    }
53
54    /**
55     * Searchs for an image inside image passed into constructor.
56     *
57     * @param image an image to search.
58     * @param index an ordinal image location index. If equal to 1, for example,
59     * second appropriate location will be found.
60     * @return Left-up corner coordinates of image location.
61     */
62    @Override
63    public Point findImage(BufferedImage image, int index) {
64        int smallWidth = image.getWidth();
65        int smallHeight = image.getHeight();
66        int[][] smallPixels = new int[smallWidth][smallHeight];
67        for (int x = 0; x < smallWidth; x++) {
68            for (int y = 0; y < smallHeight; y++) {
69                smallPixels[x][y] = image.getRGB(x, y);
70            }
71        }
72        boolean good;
73        int count = 0;
74        for (int X = 0; X <= bigWidth - smallWidth; X++) {
75            for (int Y = 0; Y <= bigHeight - smallHeight; Y++) {
76                good = true;
77                for (int x = 0; x < smallWidth; x++) {
78                    for (int y = 0; y < smallHeight; y++) {
79                        if (smallPixels[x][y] != bigPixels[X + x][Y + y]) {
80                            good = false;
81                            break;
82                        }
83                    }
84                    if (!good) {
85                        break;
86                    }
87                }
88                if (good) {
89                    if (count == index) {
90                        return new Point(X, Y);
91                    }
92                    count++;
93                }
94            }
95        }
96        return null;
97    }
98}
99