diff --git a/src/java.desktop/share/classes/com/sun/java/swing/plaf/gtk/GTKPainter.java b/src/java.desktop/share/classes/com/sun/java/swing/plaf/gtk/GTKPainter.java index 66c5de1d4c41d..1635ff66f89c1 100644 --- a/src/java.desktop/share/classes/com/sun/java/swing/plaf/gtk/GTKPainter.java +++ b/src/java.desktop/share/classes/com/sun/java/swing/plaf/gtk/GTKPainter.java @@ -1275,8 +1275,10 @@ public void paintTreeCellBackground(SynthContext context, Graphics g, ENGINE.startPainting(g, x, y, w, h, id, state); // the string arg should alternate based on row being painted, // but we currently don't pass that in. - ENGINE.paintFlatBox(g, context, id, gtkState, ShadowType.NONE, - "cell_odd", x, y, w, h, ColorType.TEXT_BACKGROUND); + if (context.getComponent().isOpaque()) { + ENGINE.paintFlatBox(g, context, id, gtkState, ShadowType.NONE, + "cell_odd", x, y, w, h, ColorType.TEXT_BACKGROUND); + } ENGINE.finishPainting(); } } diff --git a/test/jdk/javax/swing/JTree/TestTreeBackgroundColor.java b/test/jdk/javax/swing/JTree/TestTreeBackgroundColor.java new file mode 100644 index 0000000000000..e5d59a1dbe3f2 --- /dev/null +++ b/test/jdk/javax/swing/JTree/TestTreeBackgroundColor.java @@ -0,0 +1,111 @@ +/* + * 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); + } +} +