Java example source code file (NoResizeEventOnDMChangeTest.java)

This example Java source code file (NoResizeEventOnDMChangeTest.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, canvas, center, component, displaymode, event, exception, frame, graphicsdevice, illegalargumentexception, override, resizeeventchecker, runnable, runtimeexception, window

The NoResizeEventOnDMChangeTest.java Java example source code

/*
 * Copyright (c) 2007, 2008, 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.
 */
/*
 * @test
 * @bug 6646411
 * @summary Tests that full screen window and its children receive resize
            event when display mode changes
 * @author Dmitri.Trembovetski@sun.com: area=Graphics
 * @run main/othervm NoResizeEventOnDMChangeTest
 * @run main/othervm -Dsun.java2d.d3d=false NoResizeEventOnDMChangeTest
 */

import java.awt.Canvas;
import java.awt.Color;
import java.awt.Component;
import java.awt.DisplayMode;
import java.awt.EventQueue;
import java.awt.Frame;
import java.awt.Graphics;
import java.awt.GraphicsDevice;
import java.awt.GraphicsEnvironment;
import java.awt.Window;
import java.awt.event.ComponentAdapter;
import java.awt.event.ComponentEvent;
import java.awt.event.WindowAdapter;
import java.awt.event.WindowEvent;

public class NoResizeEventOnDMChangeTest {
    public static void main(String[] args) {
        final GraphicsDevice gd = GraphicsEnvironment.
            getLocalGraphicsEnvironment().getDefaultScreenDevice();

        if (!gd.isFullScreenSupported()) {
            System.out.println("Full screen not supported, test passed");
            return;
        }

        DisplayMode dm = gd.getDisplayMode();
        final DisplayMode dms[] = new DisplayMode[2];
        for (DisplayMode dm1 : gd.getDisplayModes()) {
            if (dm1.getWidth()  != dm.getWidth() ||
                dm1.getHeight() != dm.getHeight())
            {
                dms[0] = dm1;
                break;
            }
        }
        if (dms[0] == null) {
            System.out.println("Test Passed: all DMs have same dimensions");
            return;
        }
        dms[1] = dm;

        Frame f = new Frame() {
            @Override
            public void paint(Graphics g) {
                g.setColor(Color.red);
                g.fillRect(0, 0, getWidth(), getHeight());
                g.setColor(Color.green);
                g.drawRect(0, 0, getWidth()-1, getHeight()-1);
            }
        };
        f.setUndecorated(true);
        testFSWindow(gd, dms, f);

        Window w = new Window(f) {
            @Override
            public void paint(Graphics g) {
                g.setColor(Color.magenta);
                g.fillRect(0, 0, getWidth(), getHeight());
                g.setColor(Color.cyan);
                g.drawRect(0, 0, getWidth()-1, getHeight()-1);
            }
        };
        testFSWindow(gd, dms, w);
        System.out.println("Test Passed.");
    }

    private static void testFSWindow(final GraphicsDevice gd,
                                     final DisplayMode dms[],
                                     final Window fsWin)
    {
        System.out.println("Testing FS window: "+fsWin);
        Component c = new Canvas() {
            @Override
            public void paint(Graphics g) {
                g.setColor(Color.blue);
                g.fillRect(0, 0, getWidth(), getHeight());
                g.setColor(Color.magenta);
                g.drawRect(0, 0, getWidth()-1, getHeight()-1);
                g.setColor(Color.red);
                g.drawString("FS Window   : " + fsWin, 50, 50);
                DisplayMode dm =
                    getGraphicsConfiguration().getDevice().getDisplayMode();
                g.drawString("Display Mode: " +
                             dm.getWidth() + "x" + dm.getHeight(), 50, 75);
            }
        };
        fsWin.add("Center", c);
        fsWin.addWindowListener(new WindowAdapter() {
            @Override
            public void windowClosing(WindowEvent e) {
                fsWin.dispose();
                if (fsWin.getOwner() != null) {
                    fsWin.getOwner().dispose();
                }
            }
        });

        try {
            EventQueue.invokeAndWait(new Runnable() {
                public void run() {
                    gd.setFullScreenWindow(fsWin);
                }
            });
        } catch (Exception ex) {}

        sleep(1000);

        final ResizeEventChecker r1 = new ResizeEventChecker();
        final ResizeEventChecker r2 = new ResizeEventChecker();

        if (gd.isDisplayChangeSupported()) {
            fsWin.addComponentListener(r1);
            c.addComponentListener(r2);
            for (final DisplayMode dm1 : dms) {
                try {
                    EventQueue.invokeAndWait(new Runnable() {
                        public void run() {
                            System.err.printf("----------- Setting DM %dx%d:\n",
                                              dm1.getWidth(), dm1.getHeight());
                            try {
                                gd.setDisplayMode(dm1);
                                r1.incDmChanges();
                                r2.incDmChanges();
                            } catch (IllegalArgumentException iae) {}
                        }
                    });
                } catch (Exception ex) {}
                for (int i = 0; i < 3; i++) {
                    fsWin.repaint();
                    sleep(1000);
                }
            }
            fsWin.removeComponentListener(r1);
            c.removeComponentListener(r2);
        }
        try {
           EventQueue.invokeAndWait(new Runnable() {
               public void run() {
                   gd.setFullScreenWindow(null);
                    fsWin.dispose();
                    if (fsWin.getOwner() != null) {
                        fsWin.getOwner().dispose();
                    }
                }
            });
        } catch (Exception ex) {}

        System.out.printf("FS Window: resizes=%d, dm changes=%d\n",
                           r1.getResizes(), r1.getDmChanges());
        System.out.printf("Component: resizes=%d, dm changes=%d\n",
                          r2.getResizes(), r2.getDmChanges());
        if (r1.getResizes() < r1.getDmChanges()) {
            throw new RuntimeException("FS Window didn't receive all resizes!");
        }
        if (r2.getResizes() < r2.getDmChanges()) {
            throw new RuntimeException("Component didn't receive all resizes!");
        }
    }

    static void sleep(long ms) {
        try {
            Thread.sleep(ms);
        } catch (InterruptedException ex) {}
    }
    static class ResizeEventChecker extends ComponentAdapter {
        int dmChanges;
        int resizes;

        @Override
        public synchronized void componentResized(ComponentEvent e) {
            System.out.println("Received resize event for "+e.getSource());
            resizes++;
        }
        public synchronized int getResizes() {
            return resizes;
        }
        public synchronized void incDmChanges() {
            dmChanges++;
        }
        public synchronized int getDmChanges() {
            return dmChanges;
        }
    }
}