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/*
* Copyright (c) 2022, 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 8287912
* @key headful
* @requires (os.family == "linux")
* @summary Verifies if tree background color is red when
* setOpaque(false) method is called for tree component
* @run main TestTreeBackgroundColor
*/
import java.awt.Color;
import java.awt.GridLayout;
import java.awt.Point;
import java.awt.Rectangle;
import java.awt.Robot;
import java.awt.image.BufferedImage;
import java.io.File;
import javax.imageio.ImageIO;
import javax.swing.JFrame;
import javax.swing.JPanel;
import javax.swing.JTree;
import javax.swing.SwingUtilities;
import javax.swing.UIManager;
public class TestTreeBackgroundColor {
private static JFrame frame;
private static JPanel panel;
private static JTree tree;
public static void main(String[] args) throws Exception {
UIManager.setLookAndFeel("com.sun.java.swing.plaf.gtk.GTKLookAndFeel");
Robot robot = new Robot();
robot.setAutoDelay(100);
try {
SwingUtilities.invokeAndWait(new Runnable() {
public void run() {
createAndShowUI();
}
});
robot.waitForIdle();
robot.delay(1000);
Point pt = tree.getLocationOnScreen();
BufferedImage img =
robot.createScreenCapture(new Rectangle(pt.x, pt.y,
tree.getWidth(),
tree.getHeight()));
boolean passed = false;
for (int x = img.getWidth()/2; x < img.getWidth() - 1; ++x) {
Color c = new Color(img.getRGB(x, img.getHeight()/4));
if (!c.equals(Color.RED)) {
passed = false;
break;
} else {
passed = true;
}
}
if (!passed) {
ImageIO.write(img, "png", new File("TreeBackgroundColorFail.png"));
throw new RuntimeException("Test Case Failed : Tree Background Color is Not Red");
}
} finally {
SwingUtilities.invokeAndWait(() -> {
if (frame != null) {
frame.dispose();
}
});
}
}
private static void createAndShowUI() {
frame = new JFrame("Test Tree Background Color");
panel = new JPanel();
tree = new JTree();
panel.setBackground(Color.red);
panel.setLayout(new GridLayout(1, 1));
tree.setOpaque(false);
panel.add(tree);
frame.getContentPane().add(panel);
frame.pack();
frame.setSize(250, 200);
frame.setLocationRelativeTo(null);
frame.setVisible(true);
}
}
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