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.geom.AffineTransform;
  34 import java.awt.image.BufferedImage;
  35 import java.awt.image.VolatileImage;
  36 
  37 
  38 public class RenderRectTest {
  39 
  40     public static void main(String[] args) throws Exception {
  41         GraphicsConfiguration gc =
  42                 GraphicsEnvironment.getLocalGraphicsEnvironment().
  43                         getDefaultScreenDevice().getDefaultConfiguration();
  44 
  45         AffineTransform transform = gc.getDefaultTransform();
  46         if(transform.getScaleX() == 1 && transform.getScaleY() == 1) {
  47             VolatileImage vi = gc.createCompatibleVolatileImage(12, 12);
  48             Graphics2D g = vi.createGraphics();
  49             g.setColor(Color.black);
  50             g.drawRect(1, 1, 9, 9);
  51             g.dispose();
  52             BufferedImage capture = vi.getSnapshot();
  53 
  54             int w = capture.getWidth();
  55             int h = capture.getHeight();
  56             for (int y = 0; y < h >> 1; y++) {
  57                 for (int x = 0; x < w >> 1; x++) {
  58                     if (x > 0 && y > 0 && (x == 1 || y == 1)) {
  59                         if ((capture.getRGB(x, y)
  60                                 | capture.getRGB(x, h - 1 - y)
  61                                 | capture.getRGB(w - 1 - x, y)
  62                                 | capture.getRGB(w - 1 - x, h - 1 - y)) !=
  63                                 Color.black.getRGB()) {
  64                             throw new RuntimeException("Wrong rectangle");
  65                         }
  66                     } else {
  67                         if ((capture.getRGB(x, y)
  68                                 & capture.getRGB(x, h - 1 - y)
  69                                 & capture.getRGB(w - 1 - x, y)
  70                                 & capture.getRGB(w - 1 - x, h - 1 - y)) !=
  71                                 Color.white.getRGB()) {
  72                             throw new RuntimeException("Wrong rectangle");
  73                         }
  74                     }
  75                 }
  76             }
  77         } else {
  78             VolatileImage vi = gc.createCompatibleVolatileImage(12, 12);
  79             Graphics2D g = vi.createGraphics();
  80             g.setColor(Color.black);
  81             g.drawRect(1, 1, 9, 9);
  82             g.dispose();
  83 
  84             BufferedImage i1 = new BufferedImage((int)(12 * transform.getScaleX()),
  85                     (int)(12 * transform.getScaleY()), BufferedImage.TYPE_4BYTE_ABGR_PRE);
  86             g = i1.createGraphics();
  87             g.drawImage(vi, 0, 0, i1.getWidth(), i1.getHeight(), null);
  88             g.dispose();
  89 
  90 
  91             BufferedImage i2 = gc.createCompatibleImage(i1.getWidth(), i1.getHeight());
  92             g = i2.createGraphics();
  93             g.setBackground(Color.white);
  94             g.clearRect(0, 0, i2.getWidth(), i2.getHeight());
  95             g.setTransform(transform);
  96             g.setColor(Color.black);
  97             g.drawRect(1, 1, 9, 9);
  98             g.dispose();
  99 
 100             int w = i1.getWidth();
 101             int h = i1.getHeight();
 102             for (int y = 0; y < h; y++) {
 103                 for (int x = 0; x < w ; x++) {
 104                     if (i1.getRGB(x, y) != i2.getRGB(x, y)) {
 105                         throw new RuntimeException("Rectangles are different");
 106                     }
 107                 }
 108             }
 109         }
 110     }
 111 }