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Java example source code file (NSTexturedJFrame.java)

This example Java source code file (NSTexturedJFrame.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, brush, bufferedimage, exception, gui, image, interruptedexception, jframe, nstexturedjframe, rectangle, robot, runtimeexception, string, style, suntoolkit, swing

The NSTexturedJFrame.java Java example source code

/*
 * Copyright (c) 2013, 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.
 */

import java.awt.Rectangle;
import java.awt.Robot;
import java.awt.Toolkit;
import java.awt.image.BufferedImage;

import javax.swing.JFrame;
import javax.swing.SwingUtilities;

import sun.awt.OSInfo;
import sun.awt.SunToolkit;

/**
 * @test
 * @bug 7124513
 * @summary We should support NSTexturedBackgroundWindowMask style on OSX.
 * @author Sergey Bylokhov
 */
public final class NSTexturedJFrame {

    private static final String BRUSH = "apple.awt.brushMetalLook";
    private static final String STYLE = "Window.style";
    private static final BufferedImage[] images = new BufferedImage[3];
    private static Rectangle bounds;
    private static volatile int step;
    private static JFrame frame;

    public static void main(final String[] args) throws Exception {
        if (OSInfo.getOSType() != OSInfo.OSType.MACOSX) {
            System.out.println("This test is for OSX, considered passed.");
            return;
        }
        // Default window appearance
        showFrame();
        step++;
        // apple.awt.brushMetalLook appearance
        showFrame();
        step++;
        // Window.style appearance
        showFrame();

        // images on step 1 and 2 should be same
        testImages(images[1], images[2], false);
        // images on step 1 and 2 should be different from default
        testImages(images[0], images[1], true);
        testImages(images[0], images[2], true);
    }

    private static void testImages(BufferedImage img1, BufferedImage img2,
                                   boolean shouldbeDifferent) {
        boolean different = false;
        for (int x = 0; x < img1.getWidth(); ++x) {
            for (int y = 0; y < img1.getHeight(); ++y) {
                if (img1.getRGB(x, y) != img2.getRGB(x, y)) {
                    different = true;
                }
            }
        }
        if (different != shouldbeDifferent) {
            throw new RuntimeException("Textured property does not work");
        }
    }

    private static void showFrame() throws Exception {
        final Robot robot = new Robot();
        robot.setAutoDelay(50);
        createUI();
        images[step] = robot.createScreenCapture(bounds);
        SwingUtilities.invokeAndWait(frame::dispose);
        sleep();
    }

    private static void createUI() throws Exception {
        SwingUtilities.invokeAndWait(() -> {
            frame = new JFrame();
            frame.setUndecorated(true);
            frame.setSize(400, 400);
            frame.setLocationRelativeTo(null);
            switch (step) {
                case 1:
                    frame.getRootPane().putClientProperty(BRUSH, true);
                    break;
                case 2:
                    frame.getRootPane().putClientProperty(STYLE, "textured");
            }
            frame.setVisible(true);
        });
        sleep();
        SwingUtilities.invokeAndWait(() -> {
            bounds = frame.getBounds();
        });
        sleep();
    }

    private static void sleep() throws InterruptedException {
        ((SunToolkit) Toolkit.getDefaultToolkit()).realSync();
        Thread.sleep(1000);
    }
}

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