russell@unturf.com
0a580b313d
Authors: russell@unturf.com · brackishbert@gmail.com · foxhop.net · TimeHexOn.com Patches, unit tests, benchmarks, whitepaper, and outreach briefs. Public domain — no copyright claimed. Use freely.
128 lines
4.4 KiB
Java
128 lines
4.4 KiB
Java
/*
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* Copyright (c) 2000, 2025, 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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/*
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* @test
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* @bug 4247610
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* @summary Tests an unnecessary repaint issue
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* @key headful
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* @run main bug4247610
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*/
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import java.awt.Dimension;
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import java.awt.FlowLayout;
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import java.awt.Graphics;
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import java.awt.Point;
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import java.awt.Robot;
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import java.awt.event.InputEvent;
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import javax.swing.JButton;
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import javax.swing.JDesktopPane;
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import javax.swing.JFrame;
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import javax.swing.JInternalFrame;
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import javax.swing.JLabel;
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import javax.swing.JPanel;
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import javax.swing.SwingUtilities;
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import java.util.concurrent.atomic.AtomicInteger;
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import java.util.Random;
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public class bug4247610 {
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private static JFrame frame;
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private static JButton damager;
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private static volatile Point loc;
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private static volatile Dimension size;
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private static volatile boolean traced;
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private static volatile boolean failed;
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public static void main(String[] args) throws Exception {
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Robot robot = new Robot();
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SwingUtilities.invokeAndWait(() -> {
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frame = new JFrame("bug4247610");
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JDesktopPane pane = new JDesktopPane();
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JInternalFrame jif = new JInternalFrame(
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"Damager", true, true, true, true);
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InternalFramePanel ifp = new InternalFramePanel();
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damager = new JButton("Damage!");
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ifp.add(damager);
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jif.setContentPane(ifp);
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jif.setBounds(0, 0, 300, 300);
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jif.setVisible(true);
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pane.add(jif);
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jif = new JInternalFrame("Damagee", true, true, true, true);
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JPanel panel = new JPanel(new FlowLayout(FlowLayout.LEFT));
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final JLabel damagee = new JLabel("");
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panel.add(damagee);
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jif.setContentPane(panel);
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jif.setBounds(60, 220, 300, 100);
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jif.setVisible(true);
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pane.add(jif);
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final Random random = new Random();
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damager.addActionListener((e) -> {
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System.out.println("trace paints enabled");
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traced = true;
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damagee.setText(Integer.toString(random.nextInt()));
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});
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frame.setContentPane(pane);
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frame.setSize(500, 500);
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frame.setLocationRelativeTo(null);
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frame.setVisible(true);
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});
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robot.waitForIdle();
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robot.delay(1000);
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SwingUtilities.invokeAndWait(() -> {
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loc = damager.getLocationOnScreen();
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size = damager.getSize();
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});
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robot.mouseMove(loc.x + size.width / 2, loc.y + size.height / 2);
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robot.waitForIdle();
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robot.delay(200);
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robot.mousePress(InputEvent.BUTTON1_DOWN_MASK);
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robot.mouseRelease(InputEvent.BUTTON1_DOWN_MASK);
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if (failed) {
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throw new RuntimeException("Failed: unnecessary repaint occured");
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}
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}
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static class InternalFramePanel extends JPanel {
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final AtomicInteger repaintCounter = new AtomicInteger(0);
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InternalFramePanel() {
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super(new FlowLayout());
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setOpaque(true);
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}
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public synchronized void paintComponent(Graphics g) {
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super.paintComponent(g);
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repaintCounter.incrementAndGet();
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System.out.println("repaintCounter " + repaintCounter.intValue());
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if (traced) {
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failed = true;
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}
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}
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}
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}
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