russell@unturf.com
0a580b313d
Authors: russell@unturf.com · brackishbert@gmail.com · foxhop.net · TimeHexOn.com Patches, unit tests, benchmarks, whitepaper, and outreach briefs. Public domain — no copyright claimed. Use freely.
132 lines
4.2 KiB
Java
132 lines
4.2 KiB
Java
/*
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* Copyright (c) 1999, 2025, 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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* Licensed Materials - Property of IBM
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*
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* (C) Copyright IBM Corporation 1998 All Rights Reserved.
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*
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* US Government Users Restricted Rights - Use, duplication or disclosure
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* restricted by GSA ADP Schedule Contract with IBM Corp.
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*/
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/*
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* @test
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* @bug 4160721
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* @summary AWT ScrollPane painting problem
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* @library /java/awt/regtesthelpers
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* @build PassFailJFrame
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* @run main/manual ScrollPanePaint
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*/
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import java.awt.BorderLayout;
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import java.awt.Button;
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import java.awt.Color;
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import java.awt.Container;
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import java.awt.Dimension;
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import java.awt.Frame;
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import java.awt.GridLayout;
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import java.awt.Panel;
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import java.awt.ScrollPane;
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import java.awt.event.ActionEvent;
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import java.awt.event.ActionListener;
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import java.util.List;
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public class ScrollPanePaint {
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public static void main(String[] args) throws Exception {
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String INSTRUCTIONS = """
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1. Press the button marked "Toggle" a few times.
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2. The contents of the frame should alternate between
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a red panel and a scroll pane containing a green panel.
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If this does not happen (specifically, if the scroll
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pane does not consistently contain a green panel),
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then the test has FAILED.
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""";
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ScrollPaintTest scrollPaintTest = new ScrollPaintTest();
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PassFailJFrame.builder()
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.title("Test Instructions")
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.instructions(INSTRUCTIONS)
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.columns(35)
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.testUI(scrollPaintTest::initialize)
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.positionTestUI(WindowLayouts::rightOneColumn)
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.build()
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.awaitAndCheck();
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}
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private static class ScrollPaintTest implements ActionListener {
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static Frame f;
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static boolean showScroll;
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public List<Frame> initialize() {
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Frame frame = new Frame("Scrollpane paint test");
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frame.setLayout(new BorderLayout());
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f = new Frame("Scrollpane paint test");
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f.setLayout(new GridLayout(0, 1));
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Button b = new Button("Toggle");
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b.addActionListener(this);
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frame.add(b, BorderLayout.CENTER);
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frame.pack();
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showScroll = false;
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actionPerformed(null);
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return List.of(frame, f);
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}
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public void actionPerformed(ActionEvent e) {
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Container c;
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if (!showScroll) {
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c = (Container) new TestPanel(new Dimension(100, 100));
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c.setBackground(Color.red);
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} else {
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c = new ScrollPane(ScrollPane.SCROLLBARS_ALWAYS);
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Panel p = new TestPanel(new Dimension(20, 20));
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p.setBackground(Color.green);
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c.add(p);
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}
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f.removeAll();
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f.add("Center", c);
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f.pack();
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showScroll = !showScroll;
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}
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}
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private static class TestPanel extends Panel {
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Dimension dim;
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TestPanel(Dimension d) {
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dim = d;
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}
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public Dimension getMinimumSize() {
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return getPreferredSize();
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}
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public Dimension getPreferredSize() {
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return dim;
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}
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}
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}
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