1 /*
   2  * Copyright (c) 2015, 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 
  25 /**
  26  * @test
  27  * @bug 8146042
  28  * @run main RenderRectTest
  29  */
  30 
  31 import java.awt.*;
  32 
  33 import java.awt.image.BufferedImage;
  34 import java.awt.image.VolatileImage;
  35 
  36 
  37 public class RenderRectTest {
  38 
  39     public static void main(String[] args) throws Exception {
  40         GraphicsConfiguration gc =
  41                 GraphicsEnvironment.getLocalGraphicsEnvironment().
  42                         getDefaultScreenDevice().getDefaultConfiguration();
  43         VolatileImage vi = gc.createCompatibleVolatileImage(12, 12);
  44         Graphics2D g = vi.createGraphics();
  45         g.setColor(Color.black);
  46         g.drawRect(1, 1, 9, 9);
  47         g.dispose();
  48         BufferedImage capture = vi.getSnapshot();
  49 
  50         int w = capture.getWidth();
  51         int h = capture.getHeight();
  52         for(int y = 0; y < h >> 1; y++) {
  53             for(int x = 0; x < w >> 1; x++) {
  54                 if( x > 0 && y > 0 && (x == 1 || y == 1)) {
  55                     if((capture.getRGB(x, y)
  56                       | capture.getRGB(x, h - 1 - y)
  57                       | capture.getRGB(w - 1 - x, y)
  58                       | capture.getRGB(w - 1 - x, h - 1 - y)) !=
  59                                                          Color.black.getRGB()) {
  60                         throw new RuntimeException("Wrong rectangle");
  61                     }
  62                 } else {
  63                     if((capture.getRGB(x, y)
  64                       & capture.getRGB(x, h - 1 - y)
  65                       & capture.getRGB(w - 1 - x, y)
  66                       & capture.getRGB(w - 1 - x, h - 1 - y)) !=
  67                                                          Color.white.getRGB()) {
  68                         throw new RuntimeException("Wrong rectangle");
  69                     }
  70                 }
  71             }
  72         }
  73     }
  74 }