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/*
* Copyright (c) 2003, 2025, 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 4008152
* @summary ScrollPane position does not return correct values
* @key headful
* @run main ScrollPositionTest
*/
import java.awt.Adjustable;
import java.awt.BorderLayout;
import java.awt.Canvas;
import java.awt.EventQueue;
import java.awt.Frame;
import java.awt.Point;
import java.awt.Robot;
import java.awt.ScrollPane;
import java.awt.event.AdjustmentEvent;
import java.awt.event.AdjustmentListener;
public class ScrollPositionTest {
static Frame frame;
static int i = 0;
static Point p;
static ScrollPane sp;
public static void main(String[] args) throws Exception {
Robot robot = new Robot();
try {
EventQueue.invokeAndWait(() -> {
frame = new Frame("Scroll Position Test");
frame.setLayout(new BorderLayout());
frame.setSize(200, 200);
sp = new ScrollPane(ScrollPane.SCROLLBARS_AS_NEEDED);
Canvas canvas = new Canvas();
canvas.setSize(300, 300);
sp.add(canvas);
frame.add("Center", sp);
frame.setLocationRelativeTo(null);
frame.setVisible(true);
});
robot.waitForIdle();
robot.delay(1000);
EventQueue.invokeAndWait(() -> {
Adjustable saH = sp.getHAdjustable();
saH.addAdjustmentListener(new TestAdjustmentListener());
});
for (i = 0; i < 1000; i++) {
EventQueue.invokeAndWait(() -> {
p = new Point(i % 100, i % 100);
sp.setScrollPosition(p);
});
robot.waitForIdle();
robot.delay(10);
EventQueue.invokeAndWait(() -> {
if (!sp.getScrollPosition().equals(p)) {
throw new RuntimeException("Test failed. " + i + " : " +
"Expected " + p + ", but Returned: " + sp.getScrollPosition());
}
});
}
System.out.println("Test Passed.");
} finally {
EventQueue.invokeAndWait(() -> {
if (frame != null) {
frame.dispose();
}
});
}
}
private static class TestAdjustmentListener implements AdjustmentListener {
public void adjustmentValueChanged(AdjustmentEvent e) {
System.out.println("AdjEvent caught:" + e);
}
}
}
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