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/*
* Copyright (c) 2000, 2025, 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 4247610
* @summary Tests an unnecessary repaint issue
* @key headful
* @run main bug4247610
*/
import java.awt.Dimension;
import java.awt.FlowLayout;
import java.awt.Graphics;
import java.awt.Point;
import java.awt.Robot;
import java.awt.event.InputEvent;
import javax.swing.JButton;
import javax.swing.JDesktopPane;
import javax.swing.JFrame;
import javax.swing.JInternalFrame;
import javax.swing.JLabel;
import javax.swing.JPanel;
import javax.swing.SwingUtilities;
import java.util.concurrent.atomic.AtomicInteger;
import java.util.Random;
public class bug4247610 {
private static JFrame frame;
private static JButton damager;
private static volatile Point loc;
private static volatile Dimension size;
private static volatile boolean traced;
private static volatile boolean failed;
public static void main(String[] args) throws Exception {
Robot robot = new Robot();
SwingUtilities.invokeAndWait(() -> {
frame = new JFrame("bug4247610");
JDesktopPane pane = new JDesktopPane();
JInternalFrame jif = new JInternalFrame(
"Damager", true, true, true, true);
InternalFramePanel ifp = new InternalFramePanel();
damager = new JButton("Damage!");
ifp.add(damager);
jif.setContentPane(ifp);
jif.setBounds(0, 0, 300, 300);
jif.setVisible(true);
pane.add(jif);
jif = new JInternalFrame("Damagee", true, true, true, true);
JPanel panel = new JPanel(new FlowLayout(FlowLayout.LEFT));
final JLabel damagee = new JLabel("");
panel.add(damagee);
jif.setContentPane(panel);
jif.setBounds(60, 220, 300, 100);
jif.setVisible(true);
pane.add(jif);
final Random random = new Random();
damager.addActionListener((e) -> {
System.out.println("trace paints enabled");
traced = true;
damagee.setText(Integer.toString(random.nextInt()));
});
frame.setContentPane(pane);
frame.setSize(500, 500);
frame.setLocationRelativeTo(null);
frame.setVisible(true);
});
robot.waitForIdle();
robot.delay(1000);
SwingUtilities.invokeAndWait(() -> {
loc = damager.getLocationOnScreen();
size = damager.getSize();
});
robot.mouseMove(loc.x + size.width / 2, loc.y + size.height / 2);
robot.waitForIdle();
robot.delay(200);
robot.mousePress(InputEvent.BUTTON1_DOWN_MASK);
robot.mouseRelease(InputEvent.BUTTON1_DOWN_MASK);
if (failed) {
throw new RuntimeException("Failed: unnecessary repaint occured");
}
}
static class InternalFramePanel extends JPanel {
final AtomicInteger repaintCounter = new AtomicInteger(0);
InternalFramePanel() {
super(new FlowLayout());
setOpaque(true);
}
public synchronized void paintComponent(Graphics g) {
super.paintComponent(g);
repaintCounter.incrementAndGet();
System.out.println("repaintCounter " + repaintCounter.intValue());
if (traced) {
failed = true;
}
}
}
}
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