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/*
* Copyright (c) 2006, 2018, 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
* @key headful
* @bug 6366813 6459844 8198613
* @summary Tests that no exception is thrown if a frame is resized just
* before we create a bufferStrategy
* @author Dmitri.Trembovetski area=FullScreen/BufferStrategy
* @run main/othervm BufferStrategyExceptionTest
*/
import java.awt.AWTException;
import java.awt.BufferCapabilities;
import java.awt.Color;
import java.awt.Dimension;
import java.awt.Frame;
import java.awt.Graphics;
import java.awt.GraphicsConfiguration;
import java.awt.GraphicsDevice;
import java.awt.GraphicsEnvironment;
import java.awt.ImageCapabilities;
import java.awt.image.BufferStrategy;
import java.awt.image.BufferedImage;
/**
* The purpose of this test is to make sure that we do not throw an
* IllegalStateException during the creation of BufferStrategy if
* a window has been resized just before our creation attempt.
*
* We test both windowed and fullscreen mode, although the exception has
* been observed in full screen mode only.
*/
public class BufferStrategyExceptionTest {
private static final int TEST_REPS = 20;
public static void main(String[] args) {
GraphicsDevice gd =
GraphicsEnvironment.getLocalGraphicsEnvironment().
getDefaultScreenDevice();
for (int i = 0; i < TEST_REPS; i++) {
TestFrame f = new TestFrame();
f.pack();
f.setSize(400, 400);
f.setVisible(true);
if (i % 2 == 0) {
gd.setFullScreenWindow(f);
}
// generate a resize event which will invalidate the peer's
// surface data and hopefully cause an exception during
// BufferStrategy creation in TestFrame.render()
Dimension d = f.getSize();
d.width -= 5; d.height -= 5;
f.setSize(d);
f.render();
gd.setFullScreenWindow(null);
sleep(100);
f.dispose();
}
System.out.println("Test passed.");
}
private static void sleep(long msecs) {
try {
Thread.sleep(msecs);
} catch (InterruptedException ex) {
ex.printStackTrace();
}
}
private static final BufferedImage bi =
new BufferedImage(200, 200, BufferedImage.TYPE_INT_RGB);
static class TestFrame extends Frame {
TestFrame() {
setUndecorated(true);
setIgnoreRepaint(true);
setSize(400, 400);
}
public void render() {
ImageCapabilities imgBackBufCap = new ImageCapabilities(true);
ImageCapabilities imgFrontBufCap = new ImageCapabilities(true);
BufferCapabilities bufCap =
new BufferCapabilities(imgFrontBufCap,
imgBackBufCap, BufferCapabilities.FlipContents.COPIED);
try {
createBufferStrategy(2, bufCap);
} catch (AWTException ex) {
createBufferStrategy(2);
}
BufferStrategy bs = getBufferStrategy();
do {
Graphics g = bs.getDrawGraphics();
g.setColor(Color.green);
g.fillRect(0, 0, getWidth(), getHeight());
g.setColor(Color.red);
g.drawString("Rendering test", 20, 20);
g.drawImage(bi, 50, 50, null);
g.dispose();
bs.show();
} while (bs.contentsLost()||bs.contentsRestored());
}
}
}
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