94 lines
3.4 KiB
Java
94 lines
3.4 KiB
Java
/*
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* Copyright (c) 2006, 2008, Oracle and/or its affiliates. All rights reserved.
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* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
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*
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* This code is free software; you can redistribute it and/or modify it
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* under the terms of the GNU General Public License version 2 only, as
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* published by the Free Software Foundation.
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*
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* This code is distributed in the hope that it will be useful, but WITHOUT
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* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
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* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
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* version 2 for more details (a copy is included in the LICENSE file that
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* accompanied this code).
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*
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* You should have received a copy of the GNU General Public License version
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* 2 along with this work; if not, write to the Free Software Foundation,
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* Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
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*
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* Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
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* or visit www.oracle.com if you need additional information or have any
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* questions.
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*/
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import java.awt.DisplayMode;
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import java.awt.EventQueue;
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import java.awt.Frame;
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import java.awt.GraphicsDevice;
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import java.awt.GraphicsEnvironment;
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import java.lang.reflect.InvocationTargetException;
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/**
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* Used by the UninitializedDisplayModeChangeTest to change the
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* display mode.
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*/
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public class DisplayModeChanger {
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public static void main(String[] args)
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throws InterruptedException, InvocationTargetException
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{
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final GraphicsDevice gd =
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GraphicsEnvironment.getLocalGraphicsEnvironment().
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getDefaultScreenDevice();
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EventQueue.invokeAndWait(new Runnable() {
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public void run() {
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Frame f = null;
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if (gd.isFullScreenSupported()) {
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try {
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f = new Frame("DisplayChanger Frame");
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gd.setFullScreenWindow(f);
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if (gd.isDisplayChangeSupported()) {
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DisplayMode dm = findDisplayMode(gd);
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if (gd != null) {
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gd.setDisplayMode(dm);
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}
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}
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try {
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Thread.sleep(1000);
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} catch (InterruptedException ex) {
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ex.printStackTrace();
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}
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gd.setFullScreenWindow(null);
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} finally {
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if (f != null) {
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f.dispose();
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}
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}
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}
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}
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});
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}
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/**
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* Finds a display mode that is different from the current display
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* mode and is likely to cause a display change event.
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*/
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private static DisplayMode findDisplayMode(GraphicsDevice gd) {
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DisplayMode dms[] = gd.getDisplayModes();
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DisplayMode currentDM = gd.getDisplayMode();
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for (DisplayMode dm : dms) {
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if (!dm.equals(currentDM) &&
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dm.getRefreshRate() == currentDM.getRefreshRate())
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{
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// different from the current dm and refresh rate is the same
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// means that something else is different => more likely to
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// cause a DM change event
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return dm;
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}
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}
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return null;
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}
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}
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