jdk-24/test/jdk/java/awt/Frame/ShapeNotSetSometimes/ShapeNotSetSometimes.java

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/*
  @test
  @key headful
  @bug 6988428
  @summary Tests whether shape is always set
  @author anthony.petrov@oracle.com: area=awt.toplevel
  @run main ShapeNotSetSometimes
*/


import java.awt.Color;
import java.awt.EventQueue;
import java.awt.Frame;
import java.awt.Graphics;
import java.awt.Point;
import java.awt.Rectangle;
import java.awt.Robot;
import java.awt.geom.Area;
import java.awt.geom.Ellipse2D;
import java.awt.geom.Rectangle2D;


public class ShapeNotSetSometimes {

    private Frame backgroundFrame;
    private Frame window;
    private static final Color BACKGROUND_COLOR = Color.GREEN;
    private static final Color SHAPE_COLOR = Color.WHITE;
    private Point[] pointsOutsideToCheck;
    private Point[] shadedPointsToCheck;
    private Point innerPoint;

    private final Rectangle bounds = new Rectangle(220, 400, 300, 300);

    private static Robot robot;

    public ShapeNotSetSometimes() throws Exception {
        EventQueue.invokeAndWait(this::initializeGUI);
        robot.waitForIdle();
    }

    private void initializeGUI() {
        backgroundFrame = new BackgroundFrame();
        backgroundFrame.setUndecorated(true);
        backgroundFrame.setBounds(bounds);
        backgroundFrame.setVisible(true);

        Area area = new Area();
        area.add(new Area(new Rectangle2D.Float(100, 50, 100, 150)));
        area.add(new Area(new Rectangle2D.Float(50, 100, 200, 50)));
        area.add(new Area(new Ellipse2D.Float(50, 50, 100, 100)));
        area.add(new Area(new Ellipse2D.Float(50, 100, 100, 100)));
        area.add(new Area(new Ellipse2D.Float(150, 50, 100, 100)));
        area.add(new Area(new Ellipse2D.Float(150, 100, 100, 100)));


        innerPoint = new Point(150, 130);
        pointsOutsideToCheck = new Point[] {
                new Point(150, 20),
                new Point(280, 120),
                new Point(150, 250),
                new Point(20, 120)
        };

        shadedPointsToCheck = new Point[] {
                new Point(62, 62),
                new Point(240, 185)
        };

        window = new TestFrame();
        window.setUndecorated(true);
        window.setBounds(bounds);
        window.setShape(area);
        window.setVisible(true);
    }

    static class BackgroundFrame extends Frame {

        @Override
        public void paint(Graphics g) {

            g.setColor(BACKGROUND_COLOR);
            g.fillRect(0, 0, 300, 300);

            super.paint(g);
        }
    }

    class TestFrame extends Frame {

        @Override
        public void paint(Graphics g) {

            g.setColor(SHAPE_COLOR);
            g.fillRect(0, 0, bounds.width, bounds.height);

            super.paint(g);
        }
    }

    public static void main(String[] args) throws Exception {
        robot = new Robot();

        for(int i = 0; i < 50; i++) {
            System.out.println("Attempt " + i);
            new ShapeNotSetSometimes().doTest();
        }
    }

    private void doTest() throws Exception {
        EventQueue.invokeAndWait(backgroundFrame::toFront);
        robot.waitForIdle();

        EventQueue.invokeAndWait(window::toFront);
        robot.waitForIdle();

        robot.delay(500);

        try {
            colorCheck(innerPoint.x, innerPoint.y, SHAPE_COLOR, true);

            for (Point point : pointsOutsideToCheck) {
                colorCheck(point.x, point.y, BACKGROUND_COLOR, true);
            }

            for (Point point : shadedPointsToCheck) {
                colorCheck(point.x, point.y, SHAPE_COLOR, false);
            }
        } finally {
            EventQueue.invokeAndWait(() -> {
                backgroundFrame.dispose();
                window.dispose();
            });
        }
    }

    private void colorCheck(int x, int y, Color expectedColor, boolean mustBeExpectedColor) {

        int screenX = window.getX() + x;
        int screenY = window.getY() + y;

        Color actualColor = robot.getPixelColor(screenX, screenY);

        System.out.printf(
                "Checking %3d, %3d, %35s should %sbe %35s\n",
                x, y,
                actualColor,
                (mustBeExpectedColor) ? "" : "not ",
                expectedColor
        );

        if (mustBeExpectedColor != expectedColor.equals(actualColor)) {
            System.out.printf("window.getX() = %3d, window.getY() = %3d\n", window.getX(), window.getY());

            System.err.printf(
                    "Checking for transparency failed: point: %3d, %3d\n\tactual    %s\n\texpected %s%s\n",
                    screenX,
                    screenY,
                    actualColor,
                    mustBeExpectedColor ? "" : "not ",
                    expectedColor);
            throw new RuntimeException("Test failed. The shape has not been applied.");
        }
    }
}