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/*
* Copyright (c) 2015, 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.
*/
import java.awt.Color;
import java.awt.Dimension;
import java.awt.Point;
import java.awt.Robot;
import java.util.ArrayList;
import javax.swing.JFrame;
import javax.swing.JLabel;
import javax.swing.JTabbedPane;
import javax.swing.SwingUtilities;
import javax.swing.UIManager;
import javax.swing.UnsupportedLookAndFeelException;
/*
* @test
* @key headful
* @bug 8007563
* @summary Tests JTabbedPane background
*/
public class TestJTabbedPaneBackgroundColor {
private static ArrayList<String> lafList = new ArrayList<>();
private static JFrame frame;
private static JTabbedPane pane;
private static Robot robot;
private static volatile Dimension dim;
private static volatile Point loc;
private static volatile boolean isOpaque;
private static volatile Color c1 = null;
private static volatile Color c2 = null;
public static void main(String[] args) throws Exception {
robot = new Robot();
for (UIManager.LookAndFeelInfo laf :
UIManager.getInstalledLookAndFeels()) {
System.out.println("Testing: " + laf.getName());
try {
SwingUtilities.invokeAndWait(() -> {
setLookAndFeel(laf);
createAndShowUI();
});
robot.waitForIdle();
robot.delay(500);
SwingUtilities.invokeAndWait(() -> {
loc = pane.getLocationOnScreen();
dim = pane.getSize();
});
loc = new Point(loc.x + dim.width - 2, loc.y + 2);
doTesting(loc, laf);
SwingUtilities.invokeAndWait(() -> {
if (!pane.isOpaque()) {
pane.setOpaque(true);
pane.repaint();
}
});
robot.waitForIdle();
robot.delay(500);
doTesting(loc, laf);
} finally {
SwingUtilities.invokeAndWait(() -> {
if (frame != null) {
frame.dispose();
}
});
}
}
if (!lafList.isEmpty()) {
throw new RuntimeException(lafList.toString());
}
}
private static void setLookAndFeel(UIManager.LookAndFeelInfo laf) {
try {
UIManager.setLookAndFeel(laf.getClassName());
} catch (UnsupportedLookAndFeelException ignored) {
System.out.println("Unsupported LAF: " + laf.getClassName());
} catch (ClassNotFoundException | InstantiationException
| IllegalAccessException e) {
throw new RuntimeException(e);
}
}
private static void createAndShowUI() {
pane = new JTabbedPane();
pane.setOpaque(false);
pane.setBackground(Color.RED);
for (int i = 0; i < 3; i++) {
pane.addTab("Tab " + i, new JLabel("Content area " + i));
}
frame = new JFrame("Test Background Color");
frame.getContentPane().setBackground(Color.BLUE);
frame.add(pane);
frame.setDefaultCloseOperation(JFrame.DISPOSE_ON_CLOSE);
frame.setSize(400, 200);
frame.setLocationRelativeTo(null);
frame.setVisible(true);
}
private static void doTesting(Point p, UIManager.LookAndFeelInfo laf) throws Exception {
SwingUtilities.invokeAndWait(() -> {
isOpaque = pane.isOpaque();
c1 = pane.getBackground();
c2 = frame.getContentPane().getBackground();
});
Color actual = robot.getPixelColor(p.x, p.y);
Color expected = isOpaque ? c1 : c2;
if (!expected.equals(actual)) {
System.out.println("Expected Color : " + expected);
System.out.println("Actual Color : " + actual);
addOpaqueError(laf.getName(), isOpaque);
}
}
private static void addOpaqueError(String lafName, boolean opaque) {
lafList.add(lafName + " opaque=" + opaque);
}
}
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