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/*
* Copyright (c) 2006, 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.
*/
import java.awt.DisplayMode;
import java.awt.EventQueue;
import java.awt.Frame;
import java.awt.GraphicsDevice;
import java.awt.GraphicsEnvironment;
import java.lang.reflect.InvocationTargetException;
/**
* Used by the UninitializedDisplayModeChangeTest to change the
* display mode.
*/
public class DisplayModeChanger {
public static void main(String[] args)
throws InterruptedException, InvocationTargetException
{
final GraphicsDevice gd =
GraphicsEnvironment.getLocalGraphicsEnvironment().
getDefaultScreenDevice();
EventQueue.invokeAndWait(new Runnable() {
public void run() {
Frame f = null;
if (gd.isFullScreenSupported()) {
try {
f = new Frame("DisplayChanger Frame");
gd.setFullScreenWindow(f);
if (gd.isDisplayChangeSupported()) {
DisplayMode dm = findDisplayMode(gd);
if (gd != null) {
gd.setDisplayMode(dm);
}
}
try {
Thread.sleep(1000);
} catch (InterruptedException ex) {
ex.printStackTrace();
}
gd.setFullScreenWindow(null);
} finally {
if (f != null) {
f.dispose();
}
}
}
}
});
}
/**
* Finds a display mode that is different from the current display
* mode and is likely to cause a display change event.
*/
private static DisplayMode findDisplayMode(GraphicsDevice gd) {
DisplayMode dms[] = gd.getDisplayModes();
DisplayMode currentDM = gd.getDisplayMode();
for (DisplayMode dm : dms) {
if (!dm.equals(currentDM) &&
dm.getRefreshRate() == currentDM.getRefreshRate())
{
// different from the current dm and refresh rate is the same
// means that something else is different => more likely to
// cause a DM change event
return dm;
}
}
return null;
}
}
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