Java example source code file (bug7154030.java)

This example Java source code file (bug7154030.java) is included in the alvinalexander.com "Java Source Code Warehouse" project. The intent of this project is to help you "Learn Java by Example" ^TM.

Learn more about this Java project at its project page.

Java - Java tags/keywords

awt, bufferedimage, color, exception, failed, gui, image, jbutton, jdesktoppane, jframe, override, rectangle, robot, runnable, suntoolkit, swing

The bug7154030.java Java example source code

/*
 * Copyright (c) 2012, Oracle and/or its affiliates. All rights reserved.
 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
 *
 * This code is free software; you can redistribute it and/or modify it
 * under the terms of the GNU General Public License version 2 only, as
 * published by the Free Software Foundation.
 *
 * This code is distributed in the hope that it will be useful, but WITHOUT
 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
 * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
 * version 2 for more details (a copy is included in the LICENSE file that
 * accompanied this code).
 *
 * You should have received a copy of the GNU General Public License version
 * 2 along with this work; if not, write to the Free Software Foundation,
 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
 *
 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
 * or visit www.oracle.com if you need additional information or have any
 * questions.
 */

/*
 * Portions Copyright (c) 2012 IBM Corporation
 */

import javax.swing.JButton;
import javax.swing.JDesktopPane;
import javax.swing.JFrame;
import javax.swing.SwingUtilities;
import sun.awt.SunToolkit;

import java.awt.AWTException;
import java.awt.AlphaComposite;
import java.awt.Color;
import java.awt.Graphics;
import java.awt.Graphics2D;
import java.awt.Rectangle;
import java.awt.Robot;
import java.awt.Toolkit;
import java.awt.image.BufferedImage;

/* @test 1.1 2012/04/12
 * @bug 7154030
 * @summary Swing components fail to hide after calling hide()
 * @author Jonathan Lu
 * @library ../../regtesthelpers/
 * @build Util
 * @run main bug7154030
 */

public class bug7154030 {

    private static JButton button = null;

    public static void main(String[] args) throws Exception {
        BufferedImage imageInit = null;

        BufferedImage imageShow = null;

        BufferedImage imageHide = null;

        SunToolkit toolkit = (SunToolkit) Toolkit.getDefaultToolkit();

        Robot robot = new Robot();

        SwingUtilities.invokeAndWait(new Runnable() {

            @Override
            public void run() {
                JDesktopPane desktop = new JDesktopPane();
                button = new JButton("button");
                JFrame frame = new JFrame();

                button.setSize(200, 200);
                button.setLocation(100, 100);
                button.setForeground(Color.RED);
                button.setBackground(Color.RED);
                button.setOpaque(true);
                button.setVisible(false);
                desktop.add(button);

                frame.setContentPane(desktop);
                frame.setSize(300, 300);
                frame.setLocation(0, 0);
                frame.setVisible(true);
                frame.setDefaultCloseOperation(JFrame.DISPOSE_ON_CLOSE);
            }
        });

        toolkit.realSync();
        imageInit = robot.createScreenCapture(new Rectangle(0, 0, 300, 300));

        SwingUtilities.invokeAndWait(new Runnable() {

            @Override
            public void run() {
                button.show();
            }
        });

        toolkit.realSync();
        imageShow = robot.createScreenCapture(new Rectangle(0, 0, 300, 300));
        if (Util.compareBufferedImages(imageInit, imageShow)) {
            throw new Exception("Failed to show opaque button");
        }

        toolkit.realSync();

        SwingUtilities.invokeAndWait(new Runnable() {

            @Override
            public void run() {
                button.hide();
            }
        });

        toolkit.realSync();
        imageHide = robot.createScreenCapture(new Rectangle(0, 0, 300, 300));

        if (!Util.compareBufferedImages(imageInit, imageHide)) {
            throw new Exception("Failed to hide opaque button");
        }

        SwingUtilities.invokeAndWait(new Runnable() {

            @Override
            public void run() {
                button.setOpaque(false);
                button.setBackground(new Color(128, 128, 0));
                button.setVisible(false);
            }
        });

        toolkit.realSync();
        imageInit = robot.createScreenCapture(new Rectangle(0, 0, 300, 300));

        SwingUtilities.invokeAndWait(new Runnable() {

            @Override
            public void run() {
                button.show();
            }
        });

        toolkit.realSync();
        imageShow = robot.createScreenCapture(new Rectangle(0, 0, 300, 300));

        SwingUtilities.invokeAndWait(new Runnable() {

            @Override
            public void run() {
                button.hide();
            }
        });

        if (Util.compareBufferedImages(imageInit, imageShow)) {
            throw new Exception("Failed to show non-opaque button");
        }

        toolkit.realSync();
        imageHide = robot.createScreenCapture(new Rectangle(0, 0, 300, 300));

        if (!Util.compareBufferedImages(imageInit, imageHide)) {
            throw new Exception("Failed to hide non-opaque button");
        }
    }
}