124 lines
4.9 KiB
Java
124 lines
4.9 KiB
Java
/*
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* Copyright (c) 2022, 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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/*
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* @test
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* @bug 8016524
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* @requires (os.family=="mac")
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* @key headful
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* @summary Tests whether the bottom line of JTableHeader border is visible for MacOS default LAF
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* @run main JTHeaderBorderTest
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*/
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import java.awt.Graphics2D;
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import javax.imageio.ImageIO;
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import javax.swing.JFrame;
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import javax.swing.JTable;
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import javax.swing.JScrollPane;
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import javax.swing.SwingUtilities;
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import javax.swing.UIManager;
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import javax.swing.UnsupportedLookAndFeelException;
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import java.awt.image.BufferedImage;
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import java.io.File;
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import java.io.IOException;
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import static java.awt.image.BufferedImage.TYPE_INT_ARGB;
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public class JTHeaderBorderTest {
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private static JFrame frame;
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private static JTable table;
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private static JScrollPane scrollableTable;
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private static final int FRAME_HT = 300;
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private static final int FRAME_WT = 300;
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private static final int TABLE_COLS = 3;
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private static final int TABLE_ROWS = 2;
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private static final int Y_OFFSET_START = 30;
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private static final int Y_OFFSET_END = 55;
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private static final int X_OFFSET = 25;
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public static void main(String[] args) throws Exception {
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try {
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try {
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UIManager.setLookAndFeel(UIManager.getSystemLookAndFeelClassName());
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} catch (ClassNotFoundException | InstantiationException | IllegalAccessException
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| UnsupportedLookAndFeelException e) {
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throw new RuntimeException("Unsupported Look&Feel Class");
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}
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SwingUtilities.invokeAndWait(() -> {
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table = new JTable(TABLE_ROWS, TABLE_COLS);
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scrollableTable = new JScrollPane(table);
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frame = new JFrame();
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frame.getContentPane().add(scrollableTable);
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frame.setSize(FRAME_WT, FRAME_HT);
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frame.setLocationRelativeTo(null);
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frame.setVisible(true);
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frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
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// paint JFrame to BufferedImage
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BufferedImage image = new BufferedImage(FRAME_WT, FRAME_HT, TYPE_INT_ARGB);
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Graphics2D graphics2D = image.createGraphics();
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frame.paint(graphics2D);
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graphics2D.dispose();
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int tableColor = table.getBackground().getRGB();
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int headerColor = table.getTableHeader().getBackground().getRGB();
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//at start pixelColor initialized to table header background color
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int pixelColor = headerColor;
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boolean isBottomLineVisible = false;
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// scan table header region to check if bottom border of JTableHeader is visible
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for (int y = Y_OFFSET_START; y <= Y_OFFSET_END; y++) {
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pixelColor = image.getRGB(X_OFFSET, y);
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System.out.println("Y offset: "+ y + " Color: "+ (Integer.toHexString(image.getRGB(X_OFFSET, y))));
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if (pixelColor != tableColor || pixelColor != headerColor) {
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isBottomLineVisible = true;
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break;
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}
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}
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// throw Runtime Exception if border is not visible in the scanned region
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if (!isBottomLineVisible) {
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saveImage(image, "JTableHeader.png");
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throw new RuntimeException("JTableHeader Bottom Border not visible");
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}
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});
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} finally {
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if (frame != null) {
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SwingUtilities.invokeAndWait(()-> frame.dispose());
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}
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}
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}
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// to save the BufferedImage as .png in the event the test fails (for debugging purpose)
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private static void saveImage(BufferedImage image, String filename) {
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try {
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ImageIO.write(image, "png", new File(filename));
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} catch (IOException e) {
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e.printStackTrace();
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}
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}
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}
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