test/jdk/java/awt/Window/LocationByPlatform/TestLocationByPlatform.java

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/*
 * @test
 * @bug 6318630
 * @summary Test that location by platform works
 * @library /java/awt/regtesthelpers
 * @build PassFailJFrame
 * @run main/manual TestLocationByPlatform
 */

import java.awt.BorderLayout;
import java.awt.Canvas;
import java.awt.Color;
import java.awt.Dimension;
import java.awt.EventQueue;
import java.awt.Frame;
import java.awt.Graphics;

public class TestLocationByPlatform {
    public static void main(String[] args) throws Exception {
        String INSTRUCTIONS = """
            You should see two frames. One has locationByPlatform set, it
            should be displayed somewhere on the screen most probably without
            intersecting other Frames or stacked over normal frame with some
            offset. Another has its location explicitly set to (0, 450).
            Please verify that the frames are located correctly on the screen.

            Also verify that the picture inside of frames looks the same
            and consists of red descending triangle occupying exactly the bottom
            half of the frame. Make sure that there is a blue rectangle exactly
            surrounding the client area of frame with no pixels between it and
            the frame's decorations. Press Pass if this all is true,
            otherwise press Fail.
            """;

        PassFailJFrame passFailJFrame = PassFailJFrame.builder()
            .title("Test Instructions")
            .instructions(INSTRUCTIONS)
            .rows(13)
            .columns(40)
            .build();
        EventQueue.invokeAndWait(TestLocationByPlatform::createUI);
        passFailJFrame.awaitAndCheck();
    }
    private static void createUI() {
        Frame frame = new Frame("Normal");
        frame.setLocation(0, 450);
        Canvas c = new MyCanvas();
        frame.add(c, BorderLayout.CENTER);
        frame.pack();
        PassFailJFrame.addTestWindow(frame);
        frame.setVisible(true);

        frame = new Frame("Location by platform");
        frame.setLocationByPlatform(true);
        c = new MyCanvas();
        frame.add(c, BorderLayout.CENTER);
        frame.pack();
        PassFailJFrame.addTestWindow(frame);
        frame.setVisible(true);
    }

    static class MyCanvas extends Canvas {
        @Override
        public Dimension getPreferredSize() {
            return new Dimension(400, 400);
        }

        @Override
        public void paint(Graphics g) {
            g.setColor(Color.red);
            for (int i = 399; i >= 0; i--) {
                g.drawLine(400 - i - 1, 400 - i - 1,
                    400 - i - 1, 399);
            }
            g.setColor(Color.blue);
            g.drawLine(0, 0, 399, 0);
            g.drawLine(0, 0, 0, 399);
            g.drawLine(0, 399, 399, 399);
            g.drawLine(399, 0, 399, 399);
        }
    }
}