1 /*
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3  * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
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5  * This code is free software; you can redistribute it and/or modify it
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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
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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 8198613
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.d3d=true    -Dsun.java2d.uiScale=2 CopyScaledAreaTest
37  * @run main/othervm -Dsun.java2d.d3d=false   -Dsun.java2d.opengl=false
38  *                   -Dsun.java2d.uiScale=2 CopyScaledAreaTest
39  */
40 public class CopyScaledAreaTest {
41 
42     private static final int IMAGE_WIDTH = 800;
43     private static final int IMAGE_HEIGHT = 800;
44     private static final int X = 50;
45     private static final int Y = 50;
46     private static final int W = 100;
47     private static final int H = 75;
48     private static final int DX = 15;
49     private static final int DY = 10;
50     private static final int N = 3;
51     private static final Color BACKGROUND_COLOR = Color.YELLOW;
52     private static final Color FILL_COLOR = Color.ORANGE;
53     private static final double[][] SCALES = {{1.3, 1.4}, {0.3, 2.3}, {2.7, 0.1}};
54 
isSupported()55     private static boolean isSupported() {
56         String d3d = System.getProperty("sun.java2d.d3d");
57         return !Boolean.getBoolean(d3d) || getOSType() == OSType.WINDOWS;
58     }
59 
scale(int x, double scale)60     private static int scale(int x, double scale) {
61         return (int) Math.floor(x * scale);
62     }
63 
createVolatileImage(GraphicsConfiguration conf)64     private static VolatileImage createVolatileImage(GraphicsConfiguration conf) {
65         return conf.createCompatibleVolatileImage(IMAGE_WIDTH, IMAGE_HEIGHT);
66     }
67 
68     // rendering to the image
renderOffscreen(VolatileImage vImg, GraphicsConfiguration conf, double scaleX, double scaleY)69     private static void renderOffscreen(VolatileImage vImg,
70                                         GraphicsConfiguration conf,
71                                         double scaleX,
72                                         double scaleY)
73     {
74         int attempts = 0;
75         do {
76 
77             if (attempts > 10) {
78                 throw new RuntimeException("Too many attempts!");
79             }
80 
81             if (vImg.validate(conf) == VolatileImage.IMAGE_INCOMPATIBLE) {
82                 // old vImg doesn't work with new GraphicsConfig; re-create it
83                 vImg = createVolatileImage(conf);
84             }
85             Graphics2D g = vImg.createGraphics();
86             //
87             // miscellaneous rendering commands...
88             //
89             g.setColor(BACKGROUND_COLOR);
90             g.fillRect(0, 0, IMAGE_WIDTH, IMAGE_HEIGHT);
91             g.scale(scaleX, scaleY);
92 
93             g.setColor(FILL_COLOR);
94             g.fillRect(X, Y, W, H);
95 
96             for (int i = 0; i < N; i++) {
97                 g.copyArea(X + i * DX, Y + i * DY, W, H, DX, DY);
98             }
99             g.dispose();
100             attempts++;
101         } while (vImg.contentsLost());
102     }
103 
main(String[] args)104     public static void main(String[] args) throws Exception {
105 
106         if (!isSupported()) {
107             return;
108         }
109 
110         GraphicsConfiguration graphicsConfiguration =
111                 GraphicsEnvironment.getLocalGraphicsEnvironment()
112                 .getDefaultScreenDevice().getDefaultConfiguration();
113 
114         for(double[] scales: SCALES){
115             testScale(scales[0], scales[1], graphicsConfiguration);
116         }
117     }
118 
testScale(double scaleX, double scaleY, GraphicsConfiguration gc)119     private static void testScale(double scaleX, double scaleY,
120                                   GraphicsConfiguration gc) throws Exception
121     {
122 
123         BufferedImage buffImage = new BufferedImage(IMAGE_WIDTH, IMAGE_HEIGHT,
124                                                     BufferedImage.TYPE_INT_RGB);
125         Graphics g = buffImage.createGraphics();
126 
127         VolatileImage vImg = createVolatileImage(gc);
128 
129         int attempts = 0;
130         do {
131 
132             if (attempts > 10) {
133                 throw new RuntimeException("Too many attempts!");
134             }
135 
136             int returnCode = vImg.validate(gc);
137             if (returnCode == VolatileImage.IMAGE_RESTORED) {
138                 // Contents need to be restored
139                 renderOffscreen(vImg, gc, scaleX, scaleY); // restore contents
140             } else if (returnCode == VolatileImage.IMAGE_INCOMPATIBLE) {
141                 // old vImg doesn't work with new GraphicsConfig; re-create it
142                 vImg = createVolatileImage(gc);
143                 renderOffscreen(vImg, gc, scaleX, scaleY);
144             }
145             g.drawImage(vImg, 0, 0, null);
146             attempts++;
147         } while (vImg.contentsLost());
148 
149         g.dispose();
150 
151         int x = scale(X + N * DX, scaleX) + 1;
152         int y = scale(Y + N * DY, scaleY) + 1;
153         int w = scale(W, scaleX) - 2;
154         int h = scale(H, scaleY) - 2;
155 
156         for (int i = x; i < x + w; i++) {
157             for (int j = y; j < y + h; j++) {
158                 if (buffImage.getRGB(i, j) != FILL_COLOR.getRGB()) {
159                     throw new RuntimeException("Wrong rectangle color!");
160                 }
161             }
162         }
163     }
164 }
165