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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.AWTException;
import java.awt.Canvas;
import java.awt.Color;
import java.awt.Dimension;
import java.awt.FlowLayout;
import java.awt.Frame;
import java.awt.Graphics;
import java.awt.Point;
import java.awt.Rectangle;
import java.awt.Robot;
import java.awt.ScrollPane;
import java.awt.event.MouseEvent;
import java.awt.event.WindowAdapter;
import java.awt.event.WindowEvent;
import java.lang.reflect.InvocationTargetException;
import java.util.concurrent.atomic.AtomicReference;
import static java.awt.EventQueue.invokeAndWait;
/*
* @test
* @bug 8297923
* @key headful
* @requires os.family=="windows"
* @summary Verifies no GDI objects are leaked after scrolling continuously
* @run main/othervm -Dsun.java2d.d3d=false ScrollPaneLeakTest
*/
public class ScrollPaneLeakTest {
/**
* The number of times the test repeats scrolling cycles.
*/
private static final int REPEATS = 1;
/**
* The number of times the robot moves the scroll bar thumb down and up
* per one cycle.
*/
private static final int UP_DOWN_CYCLES = 20;
private static final Color CANVAS_FOREGROUND = new Color(200, 240, 200);
private static final Color CANVAS_BACKGROUND = new Color(240, 200, 240);
private static final Color SCROLL_PANE_BACKGROUND = new Color(240, 240, 200);
private static final Dimension CANVAS_SIZE = new Dimension(400, 600);
private static final Dimension FRAME_SIZE = new Dimension(CANVAS_SIZE.width * 2,
3 * CANVAS_SIZE.height / 4);
private static final Dimension SCROLL_PANE_SIZE = new Dimension(CANVAS_SIZE.width,
CANVAS_SIZE.height / 2);
private static Frame frame;
private static ScrollPane scroll;
private static final AtomicReference<Rectangle> frameBounds = new AtomicReference<>();
private static final AtomicReference<Rectangle> scrollBounds = new AtomicReference<>();
private static final AtomicReference<Integer> vertBarWidth = new AtomicReference<>();
private static final AtomicReference<Integer> horzBarHeight = new AtomicReference<>();
public static void main(String[] args)
throws InterruptedException, InvocationTargetException, AWTException {
try {
invokeAndWait(ScrollPaneLeakTest::createUI);
final Robot robot = new Robot();
robot.waitForIdle();
invokeAndWait(() -> frame.setExtendedState(frame.getExtendedState()
| Frame.MAXIMIZED_BOTH));
robot.waitForIdle();
invokeAndWait(() -> {
scrollBounds.set(new Rectangle(scroll.getLocationOnScreen(),
scroll.getSize()));
vertBarWidth.set(scroll.getVScrollbarWidth());
horzBarHeight.set(scroll.getHScrollbarHeight());
});
robot.waitForIdle();
invokeAndWait(() -> scroll.setScrollPosition(0, 0));
robot.waitForIdle();
robot.delay(1000);
final Rectangle sb = scrollBounds.get();
final int vbar = vertBarWidth.get();
final int hbar = horzBarHeight.get() * 2;
final Point pos = new Point();
for (int no = 0; no < REPEATS; no++) {
pos.x = sb.x + sb.width - vbar / 3;
pos.y = sb.y + hbar;
robot.mouseMove(pos.x, pos.y);
robot.mousePress(MouseEvent.BUTTON1_DOWN_MASK);
for (int i = 0; i < UP_DOWN_CYCLES; i++) {
while (++pos.y < sb.y + sb.height - hbar) {
robot.mouseMove(pos.x, pos.y);
robot.delay(5);
}
while (--pos.y > sb.y + hbar) {
robot.mouseMove(pos.x, pos.y);
robot.delay(5);
}
}
robot.mouseRelease(MouseEvent.BUTTON1_DOWN_MASK);
invokeAndWait(() -> frame.setExtendedState(frame.getExtendedState()
| Frame.ICONIFIED));
robot.delay(500);
invokeAndWait(() -> frame.setExtendedState(frame.getExtendedState()
& ~Frame.ICONIFIED));
robot.delay(500);
}
invokeAndWait(() -> scroll.setScrollPosition(0, sb.height / 2));
invokeAndWait(() -> {
Rectangle bounds = frame.getBounds();
frameBounds.set(bounds);
});
// Throws OutOfMemoryError when the test fails
robot.createScreenCapture(frameBounds.get());
System.out.println("Robot created a screenshot: test passed");
} finally {
invokeAndWait(frame::dispose);
}
}
private static void createUI() {
frame = new Frame("Scroll Pane Leak Test");
frame.addWindowListener(new WindowAdapter() {
@Override
public void windowClosing(WindowEvent e) {
System.exit(0);
}
});
frame.setLayout(new FlowLayout(FlowLayout.CENTER));
frame.setLocation(0, 0);
Canvas canvas = new Canvas() {
@Override
public void paint(Graphics g) {
g.setColor(CANVAS_FOREGROUND);
g.fillRect(0, 0, getWidth(), getHeight());
}
};
canvas.setBackground(CANVAS_BACKGROUND);
canvas.setSize(CANVAS_SIZE);
scroll = new ScrollPane(ScrollPane.SCROLLBARS_ALWAYS);
scroll.add(canvas);
scroll.setSize(SCROLL_PANE_SIZE);
scroll.setBackground(SCROLL_PANE_BACKGROUND);
frame.add(scroll);
frame.setSize(FRAME_SIZE);
frame.setVisible(true);
}
}
|
