75 lines
2.5 KiB
Java
75 lines
2.5 KiB
Java
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/*
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* Copyright (c) 2016, 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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/* @test
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* @bug 8160246
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* @summary Regression: 4410243 reproducible with GTK LaF
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* @run main ScrollFlickerTest
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*/
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import javax.swing.*;
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import java.awt.*;
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import java.awt.event.ComponentAdapter;
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import java.awt.event.ComponentEvent;
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public class ScrollFlickerTest {
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private static JFrame frame;
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private static JScrollPane scroll;
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private static int cnt = 0;
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public static void main(String[] args) throws Exception {
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SwingUtilities.invokeAndWait(() -> {
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frame = new JFrame();
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frame.setSize(300, 200);
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frame.getContentPane().setLayout(null);
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JTextArea text = new JTextArea("Test test test test");
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text.setLineWrap(true);
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scroll = new JScrollPane(text);
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frame.getContentPane().add(scroll);
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scroll.setBounds(1, 1, 100, 50);
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frame.setVisible(true);
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});
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Robot robot = new Robot();
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robot.waitForIdle();
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robot.delay(200);
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SwingUtilities.invokeAndWait(() -> {
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scroll.getViewport().addChangeListener((e) -> cnt++);
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Insets insets = scroll.getInsets();
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scroll.setSize(insets.left + insets.right +
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scroll.getVerticalScrollBar().getPreferredSize().width, 50);
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scroll.revalidate();
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});
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robot.delay(1000);
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SwingUtilities.invokeLater(frame::dispose);
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if (cnt > 2) {
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throw new RuntimeException("Scroll bar flickers");
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}
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}
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}
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