1 /*
   2  * Copyright (c) 2013, 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 import java.awt.AlphaComposite;
  26 import java.awt.Color;
  27 import java.awt.Graphics2D;
  28 import java.awt.GraphicsConfiguration;
  29 import java.awt.GraphicsEnvironment;
  30 import java.awt.image.BufferedImage;
  31 import java.awt.image.VolatileImage;
  32 
  33 /**
  34  * @test
  35  * @bug 8000629
  36  * @summary Temporary backbuffer in the DrawImage should not fill background
  37  * outside of source image bounds.
  38  * @author Sergey Bylokhov
  39  */
  40 public final class IncorrectBounds {
  41 
  42     private static final int width = 400;
  43     private static final int height = 400;
  44 
  45     public static void main(final String[] args) {
  46         GraphicsEnvironment ge =
  47                 GraphicsEnvironment.getLocalGraphicsEnvironment();
  48         GraphicsConfiguration gc =
  49                 ge.getDefaultScreenDevice().getDefaultConfiguration();
  50         VolatileImage vi = gc.createCompatibleVolatileImage(width / 4,
  51                                                             height / 4);
  52         final BufferedImage bi = new BufferedImage(width, height,
  53                                                    BufferedImage.TYPE_INT_ARGB);
  54         while (true) {
  55             vi.validate(gc);
  56             Graphics2D g2D = vi.createGraphics();
  57             g2D.setColor(Color.green);
  58             g2D.fillRect(0, 0, width / 4, height / 4);
  59             g2D.dispose();
  60 
  61             if (vi.validate(gc) != VolatileImage.IMAGE_OK) {
  62                 try {
  63                     Thread.sleep(100);
  64                 } catch (InterruptedException ignored) {
  65                 }
  66                 continue;
  67             }
  68 
  69             Graphics2D g = bi.createGraphics();
  70             g.setComposite(AlphaComposite.Src);
  71             g.setColor(Color.red);
  72             g.fillRect(0, 0, width, height);
  73             // Use sx and sy outside of VI bounds.
  74             g.drawImage(vi, 0, 0, width / 2, height / 2, 0, 0, width * 2,
  75                         height * 2, null);
  76             g.dispose();
  77 
  78             if (vi.contentsLost()) {
  79                 try {
  80                     Thread.sleep(100);
  81                 } catch (InterruptedException ignored) {
  82                 }
  83                 continue;
  84             }
  85 
  86             for (int x = 0; x < width; ++x) {
  87                 for (int y = 0; y < height; ++y) {
  88                     if (x < width / 16 && y < height / 16) {
  89                         if (bi.getRGB(x, y) != Color.green.getRGB()) {
  90                             throw new RuntimeException("Test failed.");
  91                         }
  92                     } else {
  93                         if (bi.getRGB(x, y) != Color.red.getRGB()) {
  94                             throw new RuntimeException("Test failed.");
  95                         }
  96                     }
  97                 }
  98             }
  99             break;
 100         }
 101     }
 102 }