97 lines
3.5 KiB
Java
97 lines
3.5 KiB
Java
/*
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* Copyright (c) 1999, 2024, 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 4243479
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* @summary Tests that JViewport do not blit when not visible
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* @library /java/awt/regtesthelpers
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* @build PassFailJFrame
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* @run main/manual bug4243479
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*/
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import java.awt.event.ActionEvent;
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import java.awt.event.ActionListener;
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import java.awt.FlowLayout;
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import java.awt.Point;
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import javax.swing.JButton;
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import javax.swing.JFrame;
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import javax.swing.JPanel;
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import javax.swing.JScrollPane;
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import javax.swing.JTabbedPane;
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import javax.swing.JTextArea;
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import javax.swing.JViewport;
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public class bug4243479 {
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private static final String INSTRUCTIONS = """
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The tabbed pane contains two tabs: "button" and "scrollpane".
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The second contains some text inserted into a scrollpane.
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Press the "Press here" button.
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If a piece of scrollpane appears, press Fail else press Pass.""";
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private static JFrame createTestUI() {
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char[] text = new char[20000];
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for (int counter = 0; counter < text.length; counter++) {
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if (counter % 80 == 0) {
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text[counter] = '\n';
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}
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else {
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text[counter] = 'a';
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}
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}
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JScrollPane sp = new JScrollPane(new JTextArea
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(new String(text)));
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final JViewport vp = sp.getViewport();
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vp.putClientProperty("EnableWindowBlit", Boolean.TRUE);
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JTabbedPane tp = new JTabbedPane();
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JPanel panel = new JPanel(new FlowLayout());
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JButton button = new JButton("Press here");
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button.addActionListener(new ActionListener() {
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public void actionPerformed(ActionEvent ae) {
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Point location = vp.getViewPosition();
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location.y += 100;
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vp.setViewPosition(location);
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}
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});
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panel.add(button);
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tp.add("button", panel);
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tp.add("scrollpane", sp);
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JFrame frame = new JFrame("4243479 Test");
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frame.getContentPane().add(tp);
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frame.pack();
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return frame;
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}
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public static void main(String[] argv) throws Exception {
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PassFailJFrame.builder()
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.title("JViewport Instructions")
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.instructions(INSTRUCTIONS)
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.rows(5)
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.columns(30)
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.position(PassFailJFrame.Position.TOP_LEFT_CORNER)
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.testUI(bug4243479::createTestUI)
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.build()
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.awaitAndCheck();
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}
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}
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