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 import java.awt.*;
  25 import java.awt.image.BufferedImage;
  26 import java.awt.image.VolatileImage;
  27 import static sun.awt.OSInfo.*;
  28 
  29 /**
  30  * @test
  31  * @key headful
  32  * @bug 8069348
  33  * @summary SunGraphics2D.copyArea() does not properly work for scaled graphics
  34  * @modules java.desktop/sun.awt
  35  * @run main/othervm -Dsun.java2d.uiScale=2 CopyScaledAreaTest
  36  * @run main/othervm -Dsun.java2d.opengl=true -Dsun.java2d.uiScale=2 CopyScaledAreaTest
  37  * @run main/othervm -Dsun.java2d.d3d=true    -Dsun.java2d.uiScale=2 CopyScaledAreaTest
  38  * @run main/othervm -Dsun.java2d.d3d=false   -Dsun.java2d.opengl=false
  39  *                   -Dsun.java2d.uiScale=2 CopyScaledAreaTest
  40  */
  41 public class CopyScaledAreaTest {
  42 
  43     private static final int IMAGE_WIDTH = 800;
  44     private static final int IMAGE_HEIGHT = 800;
  45     private static final int X = 50;
  46     private static final int Y = 50;
  47     private static final int W = 100;
  48     private static final int H = 75;
  49     private static final int DX = 15;
  50     private static final int DY = 10;
  51     private static final int N = 3;
  52     private static final Color BACKGROUND_COLOR = Color.YELLOW;
  53     private static final Color FILL_COLOR = Color.ORANGE;
  54     private static final double[][] SCALES = {{1.3, 1.4}, {0.3, 2.3}, {2.7, 0.1}};
  55 
  56     private static boolean isSupported() {
  57         String d3d = System.getProperty("sun.java2d.d3d");
  58         return !Boolean.getBoolean(d3d) || getOSType() == OSType.WINDOWS;
  59     }
  60 
  61     private static int scale(int x, double scale) {
  62         return (int) Math.floor(x * scale);
  63     }
  64 
  65     private static VolatileImage createVolatileImage(GraphicsConfiguration conf) {
  66         return conf.createCompatibleVolatileImage(IMAGE_WIDTH, IMAGE_HEIGHT);
  67     }
  68 
  69     // rendering to the image
  70     private static void renderOffscreen(VolatileImage vImg,
  71                                         GraphicsConfiguration conf,
  72                                         double scaleX,
  73                                         double scaleY)
  74     {
  75         int attempts = 0;
  76         do {
  77 
  78             if (attempts > 10) {
  79                 throw new RuntimeException("Too many attempts!");
  80             }
  81 
  82             if (vImg.validate(conf) == VolatileImage.IMAGE_INCOMPATIBLE) {
  83                 // old vImg doesn't work with new GraphicsConfig; re-create it
  84                 vImg = createVolatileImage(conf);
  85             }
  86             Graphics2D g = vImg.createGraphics();
  87             //
  88             // miscellaneous rendering commands...
  89             //
  90             g.setColor(BACKGROUND_COLOR);
  91             g.fillRect(0, 0, IMAGE_WIDTH, IMAGE_HEIGHT);
  92             g.scale(scaleX, scaleY);
  93 
  94             g.setColor(FILL_COLOR);
  95             g.fillRect(X, Y, W, H);
  96 
  97             for (int i = 0; i < N; i++) {
  98                 g.copyArea(X + i * DX, Y + i * DY, W, H, DX, DY);
  99             }
 100             g.dispose();
 101             attempts++;
 102         } while (vImg.contentsLost());
 103     }
 104 
 105     public static void main(String[] args) throws Exception {
 106 
 107         if (!isSupported()) {
 108             return;
 109         }
 110 
 111         GraphicsConfiguration graphicsConfiguration =
 112                 GraphicsEnvironment.getLocalGraphicsEnvironment()
 113                 .getDefaultScreenDevice().getDefaultConfiguration();
 114 
 115         for(double[] scales: SCALES){
 116             testScale(scales[0], scales[1], graphicsConfiguration);
 117         }
 118     }
 119 
 120     private static void testScale(double scaleX, double scaleY,
 121                                   GraphicsConfiguration gc) throws Exception
 122     {
 123 
 124         BufferedImage buffImage = new BufferedImage(IMAGE_WIDTH, IMAGE_HEIGHT,
 125                                                     BufferedImage.TYPE_INT_RGB);
 126         Graphics g = buffImage.createGraphics();
 127 
 128         VolatileImage vImg = createVolatileImage(gc);
 129 
 130         int attempts = 0;
 131         do {
 132 
 133             if (attempts > 10) {
 134                 throw new RuntimeException("Too many attempts!");
 135             }
 136 
 137             int returnCode = vImg.validate(gc);
 138             if (returnCode == VolatileImage.IMAGE_RESTORED) {
 139                 // Contents need to be restored
 140                 renderOffscreen(vImg, gc, scaleX, scaleY); // restore contents
 141             } else if (returnCode == VolatileImage.IMAGE_INCOMPATIBLE) {
 142                 // old vImg doesn't work with new GraphicsConfig; re-create it
 143                 vImg = createVolatileImage(gc);
 144                 renderOffscreen(vImg, gc, scaleX, scaleY);
 145             }
 146             g.drawImage(vImg, 0, 0, null);
 147             attempts++;
 148         } while (vImg.contentsLost());
 149 
 150         g.dispose();
 151 
 152         int x = scale(X + N * DX, scaleX) + 1;
 153         int y = scale(Y + N * DY, scaleY) + 1;
 154         int w = scale(W, scaleX) - 2;
 155         int h = scale(H, scaleY) - 2;
 156 
 157         for (int i = x; i < x + w; i++) {
 158             for (int j = y; j < y + h; j++) {
 159                 if (buffImage.getRGB(i, j) != FILL_COLOR.getRGB()) {
 160                     throw new RuntimeException("Wrong rectangle color!");
 161                 }
 162             }
 163         }
 164     }
 165 }