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/**

 * @test

 * @key headful

 * @bug 8016356

 * @summary Any swing frame resizes ugly.

 * @author Oleg Pekhovskiy

 * @requires (os.family == "windows")

 * @library /test/lib

 * @build jdk.test.lib.Platform

 * @run main bug8016356

 */

import java.awt.AWTException;

import java.awt.Color;

import java.awt.Dimension;

import java.awt.GraphicsConfiguration;

import java.awt.GraphicsEnvironment;

import java.awt.Insets;

import java.awt.Point;

import java.awt.Rectangle;

import java.awt.Robot;

import java.awt.Toolkit;

import java.awt.event.InputEvent;

import javax.swing.JFrame;

import javax.swing.JPanel;

import javax.swing.SwingUtilities;

import jdk.test.lib.Platform;

public class bug8016356 {

    private static JFrame frame;

    private static Color color;

    private static int scrTop;

    private static Point frLoc;

    private static Dimension frSize;

    public static void main(String[] args) throws Exception {

        // Windows only test

        if (Platform.isWindows()) {

            // Retrieving top edge of Desktop

            GraphicsConfiguration grConf = GraphicsEnvironment

                    .getLocalGraphicsEnvironment().getDefaultScreenDevice()

                    .getDefaultConfiguration();

            Rectangle scrRect = grConf.getBounds();

            Insets scrInsets = Toolkit.getDefaultToolkit().getScreenInsets(grConf);

            scrTop = scrRect.y + scrInsets.top;

            color = new Color(0, 255, 0);

            SwingUtilities.invokeAndWait(() -> {

                createAndShowUI();

            });

            try {

                Robot robot = new Robot();

                robot.setAutoDelay(500);

                robot.setAutoWaitForIdle(true);

                robot.delay(1000);

                // Resizing a window to invoke Windows Snap feature

                readFrameInfo();

                robot.mouseMove(frLoc.x + frSize.width / 2, frLoc.y);

                robot.mousePress(InputEvent.BUTTON1_MASK);

                robot.mouseMove(frLoc.x + frSize.width / 2, scrTop);

                robot.mouseRelease(InputEvent.BUTTON1_MASK);

                // Retrieving the color of window expanded area

                readFrameInfo();

                Insets insets = frame.getInsets();

                Color bgColor = robot.getPixelColor(frLoc.x + frSize.width / 2,

                        frLoc.y + frSize.height - insets.bottom - 1);

                frame.dispose();

                if (!bgColor.equals(color)) {

                    throw new RuntimeException("TEST FAILED: got "

                            + bgColor + " instead of " + color);

                }

                System.out.println("TEST PASSED!");

            } catch (AWTException ex) {

                throw new RuntimeException("TEST FAILED!");

            }

        }

    }

    private static void createAndShowUI() {

        frame = new JFrame();

        frame.setBounds(10, scrTop + 10, 300, 100);

        JPanel panel = new JPanel();

        panel.setBackground(color);

        frame.getContentPane().add(panel);

        frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);

        frame.setVisible(true);

    }

    private static void readFrameInfo() throws Exception {

        SwingUtilities.invokeAndWait(() -> {

            frLoc = frame.getLocationOnScreen();

            frSize = frame.getSize();

        });

    }

}