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/*
* Copyright (c) 2013, 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 4796987
* @key headful
* @requires (os.family == "windows")
* @summary Verify JButton.setBorderPainted(false) removes border
* for Windows visual styles (Windows XP and later)
* @library ../../regtesthelpers
* @build Util
* @run main bug4796987
*/
import java.awt.BorderLayout;
import java.awt.Dimension;
import java.awt.Point;
import java.awt.Rectangle;
import java.awt.Robot;
import java.awt.image.BufferedImage;
import java.io.File;
import java.io.IOException;
import javax.imageio.ImageIO;
import javax.swing.JButton;
import javax.swing.JFrame;
import javax.swing.JPanel;
import javax.swing.SwingUtilities;
import javax.swing.UIManager;
public class bug4796987 {
private static JButton button1;
private static JButton button2;
private static JFrame frame;
private static JPanel panel;
public static void main(String[] args) throws Exception {
try {
UIManager.setLookAndFeel(UIManager.getSystemLookAndFeelClassName());
testButtonBorder();
} finally {
SwingUtilities.invokeAndWait(() -> {
if (frame != null) {
frame.dispose();
}
});
}
}
private static void testButtonBorder() throws Exception {
Robot robot = new Robot();
SwingUtilities.invokeAndWait(bug4796987::createAndShowGUI);
robot.waitForIdle();
robot.delay(500);
// Hover over button1
Point b1Center = Util.getCenterPoint(button1);
robot.mouseMove(b1Center.x, b1Center.y);
robot.waitForIdle();
Rectangle panelBounds = Util.invokeOnEDT(() ->
new Rectangle(panel.getLocationOnScreen(),
panel.getSize()));
BufferedImage image = robot.createScreenCapture(panelBounds);
final Point p1 = Util.invokeOnEDT(() -> getCenterPoint(button1));
final Point p2 = Util.invokeOnEDT(() -> getCenterPoint(button2));
final int color = image.getRGB(p1.x, p1.y);
for (int dx = 0; p1.x + dx < p2.x; dx++) {
if (color != image.getRGB(p1.x + dx, p1.y)) {
System.err.println("Wrong color at " + (p1.x + dx) + ", " + p1.y
+ " - expected " + Integer.toHexString(color));
saveImage(image);
throw new RuntimeException("Button has border and background!");
}
}
}
/**
* {@return the center point of a button relative to its parent}
* @param button the button to calculate the center point
*/
private static Point getCenterPoint(JButton button) {
Point location = button.getLocation();
Dimension size = button.getSize();
location.translate(size.width / 2, size.height / 2);
return location;
}
private static JButton getButton() {
JButton button = new JButton();
button.setBorderPainted(false);
button.setFocusable(false);
return button;
}
private static void createAndShowGUI() {
frame = new JFrame("bug4796987");
frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
frame.setSize(200, 200);
panel = new JPanel(new BorderLayout(50, 50));
panel.add(getButton(), BorderLayout.CENTER);
panel.add(button1 = getButton(), BorderLayout.WEST);
panel.add(button2 = getButton(), BorderLayout.EAST);
frame.getContentPane().add(panel);
frame.setLocationRelativeTo(null);
frame.setVisible(true);
}
private static void saveImage(BufferedImage image) {
try {
ImageIO.write(image, "png",
new File("frame.png"));
} catch (IOException ignored) {
}
}
}
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