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3  * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
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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).
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23 
24 import java.awt.*;
25 import javax.swing.*;
26 import java.awt.image.BufferedImage;
27 
28 /*
29  * @test
30  * @summary Check if a per-pixel translucent window shows up with correct translucency
31  * @author mrkam
32  * @library ../../../../lib/testlibrary
33  * @build Common ExtendedRobot
34  * @run main PerPixelTranslucentCanvas
35  */
36 
37 public class PerPixelTranslucentCanvas extends Common {
38 
39     JPanel center;
40     Color OVAL_COLOR = Color.BLUE;
41 
main(String[] ignored)42     public static void main(String[] ignored) throws Exception {
43         FG_COLOR = new Color(200, 0, 0, 100);
44         BG_COLOR = Color.GREEN;
45         for (Class<Window> windowClass: WINDOWS_TO_TEST)
46             new PerPixelTranslucentCanvas(windowClass).doTest();
47     }
48 
PerPixelTranslucentCanvas(Class windowClass)49     public PerPixelTranslucentCanvas(Class windowClass) throws Exception {
50         super(windowClass);
51     }
52 
53     @Override
createSwingComponents()54     public void createSwingComponents() {
55         Container contentPane = RootPaneContainer.class.cast(window).getContentPane();
56         BorderLayout bl = new BorderLayout(10, 10);
57         contentPane.setLayout(bl);
58 
59         JLabel label = new JLabel("North", new ImageIcon(
60                 new BufferedImage(30, 30, BufferedImage.TYPE_INT_RGB)), SwingConstants.CENTER);
61         contentPane.add(label, BorderLayout.NORTH);
62 
63         JButton button = new JButton("West");
64         contentPane.add(button, BorderLayout.WEST);
65 
66         center = new JPanel() {
67             @Override
68             public void paint(Graphics g) {
69                 g.setColor(OVAL_COLOR);
70                 g.fillOval(0, 0, getWidth(), getHeight());
71             }
72         };
73         contentPane.add(center, BorderLayout.CENTER);
74 
75         JTextField jTextField = new JTextField("South");
76         contentPane.add(jTextField, BorderLayout.SOUTH);
77     }
78 
79     @Override
doTest()80     public void doTest() throws Exception {
81         robot.waitForIdle(delay);
82 
83         Rectangle bounds = center.getBounds();
84         Point loc = center.getLocationOnScreen();
85 
86         final int x = loc.x + bounds.width / 2;
87         final int y = loc.y + bounds.height / 2;
88 
89         Color color = robot.getPixelColor(x, y);
90         if (OVAL_COLOR.getRGB() != color.getRGB())
91             throw new RuntimeException("bounds = " + bounds + "\n" +
92                     "loc = " + loc + "\n" +
93                     "background loc = " + background.getX() + ", " + background.getY() + "\n" +
94                     "so middle point over background is " + (x - background.getX()) + ", " + (y - background.getY()) + "\n" +
95                     "Oval is not opaque in the middle point (" + x + ", " + y + ", " + color + ")");
96 
97         color = robot.getPixelColor(loc.x - 5, loc.y - 5);
98         if (FG_COLOR.getRGB() == color.getRGB())
99             throw new RuntimeException("Background is not translucent (" + color + ")");
100 
101         EventQueue.invokeAndWait(this::dispose);
102         robot.waitForIdle();
103     }
104 }
105