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/*
* Copyright (c) 1999, 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 4169461
* @summary Test for Motif Scrollbar unit increment
* @key headful
* @run main UnitIncrementTest
*/
import javax.swing.UIManager;
import java.awt.Dimension;
import java.awt.EventQueue;
import java.awt.Frame;
import java.awt.Point;
import java.awt.Rectangle;
import java.awt.Robot;
import java.awt.Scrollbar;
import java.awt.event.AdjustmentEvent;
import java.awt.event.MouseEvent;
import java.util.ArrayList;
public class UnitIncrementTest {
private static Frame frame;
private static Scrollbar scrollbar;
private static final java.util.List<AdjustmentEvent> eventsList = new ArrayList<>();
private static final int UNIT_INCREMENT_VALUE = 5;
private static final int INCREMENTS_COUNT = 10;
private static volatile Rectangle scrollbarBounds;
public static void main(String[] args) throws Exception {
UIManager.setLookAndFeel("com.sun.java.swing.plaf.motif.MotifLookAndFeel");
try {
EventQueue.invokeAndWait(UnitIncrementTest::createAndShowUI);
test();
} finally {
EventQueue.invokeAndWait(() -> {
if (frame != null) {
frame.dispose();
}
});
}
}
private static void createAndShowUI() {
frame = new Frame("UnitIncrementTest");
scrollbar = new Scrollbar(Scrollbar.HORIZONTAL);
scrollbar.setUnitIncrement(UNIT_INCREMENT_VALUE);
scrollbar.setBlockIncrement(20);
scrollbar.addAdjustmentListener(e -> {
eventsList.add(e);
System.out.println(e);
});
frame.add(scrollbar);
frame.setSize(300, 100);
frame.setLocationRelativeTo(null);
frame.setVisible(true);
}
private static void test() throws Exception {
Robot robot = new Robot();
robot.waitForIdle();
robot.setAutoDelay(25);
robot.delay(500);
EventQueue.invokeAndWait(() -> {
Point locationOnScreen = scrollbar.getLocationOnScreen();
Dimension size = scrollbar.getSize();
scrollbarBounds = new Rectangle(locationOnScreen, size);
});
robot.mouseMove(scrollbarBounds.x + scrollbarBounds.width - 10,
scrollbarBounds.y + scrollbarBounds.height / 2);
for (int i = 0; i < INCREMENTS_COUNT; i++) {
robot.mousePress(MouseEvent.BUTTON1_DOWN_MASK);
robot.mouseRelease(MouseEvent.BUTTON1_DOWN_MASK);
robot.delay(150);
}
robot.waitForIdle();
robot.delay(250);
if (eventsList.size() != INCREMENTS_COUNT) {
throw new RuntimeException("Wrong number of events: " + eventsList.size());
}
int oldValue = 0;
for (AdjustmentEvent event : eventsList) {
System.out.println("\nChecking event " + event);
int diff = event.getValue() - oldValue;
System.out.printf("diff: %d - %d = %d\n", event.getValue(), oldValue, diff);
if (diff != UNIT_INCREMENT_VALUE) {
throw new RuntimeException("Unexpected adjustment value: %d".formatted(diff));
}
oldValue = event.getValue();
}
}
}
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