100 lines
3.1 KiB
Java
100 lines
3.1 KiB
Java
/*
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* Copyright (c) 2000, 2023, 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 4342129
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@summary Unable to scroll in scrollpane for canvas
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@key headful
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*/
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import java.awt.Component;
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import java.awt.Dimension;
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import java.awt.EventQueue;
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import java.awt.Frame;
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import java.awt.Graphics;
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import java.awt.ScrollPane;
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import java.awt.event.AdjustmentEvent;
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import java.awt.event.AdjustmentListener;
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public class ComponentScrollTest {
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public ScrollPane scrollpane;
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public Frame frame;
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public volatile int count = 0;
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public static void main(String[] args) throws Exception {
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ComponentScrollTest cst = new ComponentScrollTest();
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cst.init();
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cst.start();
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}
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public void init() throws Exception {
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EventQueue.invokeAndWait(() -> {
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scrollpane = new ScrollPane();
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frame = new Frame("Component Scroll Test");
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scrollpane.add(new Component() {
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public Dimension getPreferredSize() {
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return new Dimension(500, 500);
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}
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public void paint(Graphics g) {
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g.drawLine(0, 0, 500, 500);
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}
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});
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frame.add(scrollpane);
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scrollpane.getVAdjustable().addAdjustmentListener(new AdjustmentListener() {
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@Override
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public void adjustmentValueChanged(AdjustmentEvent adjustmentEvent) {
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count++;
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scrollpane.getVAdjustable().setValue(20);
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}
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});
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frame.pack();
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frame.setVisible(true);
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});
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}
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public void start() throws Exception {
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try {
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EventQueue.invokeAndWait(() -> {
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scrollpane.getVAdjustable().setValue(20);
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});
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Thread.sleep(1000);
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System.out.println("Count = " + count);
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if (count > 50) {
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throw new RuntimeException();
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}
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} finally {
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EventQueue.invokeAndWait(() -> {
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if (frame != null) {
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frame.dispose();
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}
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});
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}
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}
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}
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