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/*
* Copyright (c) 2001, 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 4275631
* @summary Tests if vertical JSlider is properly aligned in large container
* @key headful
* @run main bug4275631
*/
import java.awt.BorderLayout;
import java.awt.Dimension;
import java.awt.GridBagConstraints;
import java.awt.GridBagLayout;
import java.awt.Point;
import java.awt.Robot;
import javax.swing.BorderFactory;
import javax.swing.Box;
import javax.swing.JFrame;
import javax.swing.JPanel;
import javax.swing.JSlider;
import javax.swing.SwingUtilities;
public class bug4275631 {
private static final int OFFSET = 1;
private static JFrame f;
private static JSlider slider1;
private static JSlider slider2;
private static volatile Point loc1;
private static volatile Point loc2;
public static void main(String[] args) throws Exception {
try {
SwingUtilities.invokeAndWait(() -> {
f = new JFrame("JSlider Alignment Test");
f.setSize(400, 200);
f.setLocationRelativeTo(null);
// Create two sliders, verify the alignment on the slider to be
// used in the border layout
slider1 = new JSlider(JSlider.VERTICAL, 0, 99, 50);
slider1.setInverted(true);
slider1.setMajorTickSpacing(10);
slider1.setMinorTickSpacing(1);
slider1.setPaintTicks(true);
slider1.setPaintLabels(true);
slider2 = new JSlider(JSlider.VERTICAL, 0, 99, 50);
slider2.setInverted(true);
slider2.setMajorTickSpacing(10);
slider2.setMinorTickSpacing(1);
slider2.setPaintTicks(true);
slider2.setPaintLabels(true);
// Try to center the natural way, using a border layout in the "Center"
JPanel borderPanel = new JPanel();
borderPanel.setLayout(new BorderLayout());
borderPanel.setBorder(BorderFactory.createTitledBorder("BorderLayout"));
borderPanel.add(slider1, BorderLayout.CENTER);
borderPanel.setPreferredSize(new Dimension(200, 200));
// Try to center using GridBagLayout, with glue on left
// and right to squeeze slider into place
JPanel gridBagPanel = new JPanel(new GridBagLayout());
gridBagPanel.setBorder(BorderFactory.createTitledBorder("GridBagLayout"));
GridBagConstraints c = new GridBagConstraints();
c.gridx = 1;
c.fill = GridBagConstraints.VERTICAL;
c.weighty = 1.0;
gridBagPanel.add(slider2, c);
c.gridx = 0;
c.fill = GridBagConstraints.BOTH;
c.weighty = 0.0;
gridBagPanel.add(Box.createHorizontalGlue(), c);
c.gridx = 2;
c.fill = GridBagConstraints.BOTH;
gridBagPanel.add(Box.createHorizontalGlue(), c);
gridBagPanel.setPreferredSize(new Dimension(200, 200));
f.add(borderPanel, BorderLayout.WEST);
f.add(gridBagPanel, BorderLayout.EAST);
f.setVisible(true);
});
Robot r = new Robot();
r.setAutoDelay(100);
r.waitForIdle();
r.delay(1000);
SwingUtilities.invokeAndWait(() -> {
loc1 = slider1.getLocationOnScreen();
loc1.setLocation(loc1.x + (slider1.getWidth() / 2),
loc1.y + (slider1.getHeight() / 2));
loc2 = slider2.getLocationOnScreen();
loc2.setLocation(loc2.x + (slider2.getWidth() / 2),
loc2.y + (slider2.getHeight() / 2));
});
if (loc1.y > loc2.y + OFFSET || loc1.y < loc2.y - OFFSET) {
throw new RuntimeException("JSlider position is not aligned!");
}
} finally {
SwingUtilities.invokeAndWait(() -> {
if (f != null) {
f.dispose();
}
});
}
}
}
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