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/*
* Copyright (c) 2023, 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.
*/
import java.awt.Canvas;
import java.awt.Color;
import java.awt.Dimension;
import java.awt.Frame;
import java.awt.Graphics;
import java.awt.Point;
import java.awt.Robot;
import java.awt.ScrollPane;
/*
* @test
* @bug 8311689
* @key headful
* @requires os.family=="windows"
* @summary Verifies ScrollPane allows viewing the whole contents of its child
* @run main ScrollPaneScrollEnd
*/
public final class ScrollPaneScrollEnd {
private static final Color CANVAS_BACKGROUND = new Color(255, 200, 200);
private static final Color CANVAS_FOREGROUND = new Color(255, 255, 200);
private static final int OFFSET = 12;
private static final Dimension CANVAS_SIZE = new Dimension(900, 600);
private static final Dimension SCROLL_PANE_SIZE =
new Dimension(CANVAS_SIZE.width / 3, CANVAS_SIZE.height / 3);
private static final int SCROLL_OFFSET = 100;
private static final int DELAY = 200;
public static void main(String[] args) throws Exception {
Canvas canvas = new Canvas() {
@Override
public void paint(Graphics g) {
g.setColor(CANVAS_BACKGROUND);
g.fillRect(0, 0, getWidth(), getHeight());
g.setColor(CANVAS_FOREGROUND);
g.fillRect(OFFSET, OFFSET,
getWidth() - OFFSET * 2, getHeight() - OFFSET * 2);
}
};
canvas.setSize(CANVAS_SIZE);
ScrollPane scrollPane = new ScrollPane(ScrollPane.SCROLLBARS_AS_NEEDED);
scrollPane.add(canvas);
scrollPane.setSize(SCROLL_PANE_SIZE);
Frame frame = new Frame("ScrollPaneScrollEnd");
frame.add(scrollPane, "Center");
frame.setLocation(100, 100);
frame.pack();
frame.setVisible(true);
final Robot robot = new Robot();
robot.waitForIdle();
robot.delay(DELAY);
final Dimension vp = scrollPane.getViewportSize();
final Point expected = new Point(CANVAS_SIZE.width - vp.width,
CANVAS_SIZE.height - vp.height);
scrollPane.setScrollPosition(CANVAS_SIZE.width + SCROLL_OFFSET,
CANVAS_SIZE.height + SCROLL_OFFSET);
try {
if (!expected.equals(scrollPane.getScrollPosition())) {
throw new Error("Can't scroll to the end of the child component");
}
} finally {
frame.dispose();
}
}
}
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