1 /*
2  * Copyright (c) 2011, 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.
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22  */
23 
24 /**
25  * @test
26  * @bug     7019861
27  *
28  * @summary Verifies that the last scanline isn't skipped when doing
29  *          antialiased rendering.
30  *
31  * @run     main Test7019861
32  */
33 
34 import java.awt.BasicStroke;
35 import java.awt.Color;
36 import java.awt.Graphics2D;
37 import java.awt.geom.Path2D;
38 import java.awt.image.BufferedImage;
39 import java.util.Arrays;
40 
41 import static java.awt.RenderingHints.*;
42 
43 public class Test7019861 {
44 
main(String[] argv)45     public static void main(String[] argv) throws Exception {
46         BufferedImage im = getWhiteImage(30, 30);
47         Graphics2D g2 = (Graphics2D)im.getGraphics();
48         g2.setRenderingHint(KEY_ANTIALIASING, VALUE_ANTIALIAS_ON);
49         g2.setRenderingHint(KEY_STROKE_CONTROL, VALUE_STROKE_PURE);
50         g2.setStroke(new BasicStroke(10, BasicStroke.CAP_BUTT, BasicStroke.JOIN_BEVEL));
51         g2.setBackground(Color.white);
52         g2.setColor(Color.black);
53 
54         Path2D p = getPath(0, 0, 20);
55         g2.draw(p);
56 
57         if (!(new Color(im.getRGB(20, 19))).equals(Color.black)) {
58             throw new Exception("This pixel should be black");
59         }
60     }
61 
getPath(int x, int y, int len)62     private static Path2D getPath(int x, int y, int len) {
63         Path2D p = new Path2D.Double();
64         p.moveTo(x, y);
65         p.quadTo(x + len, y, x + len, y + len);
66         return p;
67     }
68 
getWhiteImage(int w, int h)69     private static BufferedImage getWhiteImage(int w, int h) {
70         BufferedImage ret = new BufferedImage(w, h, BufferedImage.TYPE_INT_RGB);
71         final int[] white = new int[w * h];
72         Arrays.fill(white, 0xffffff);
73         ret.setRGB(0, 0, w, h, white, 0, w);
74         return ret;
75     }
76 }
77