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/*
* Copyright (c) 2006, 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 4094059
* @summary drawing to a subclass of canvas didn't draw to the correct location.
* @key headful
* @run main LineLocationTest
*/
import java.awt.AWTException;
import java.awt.Canvas;
import java.awt.Color;
import java.awt.Dimension;
import java.awt.EventQueue;
import java.awt.Frame;
import java.awt.Graphics;
import java.awt.Panel;
import java.awt.Point;
import java.awt.Rectangle;
import java.awt.Robot;
import java.awt.image.BufferedImage;
import java.lang.reflect.InvocationTargetException;
public class LineLocationTest extends Frame {
private DrawScreen screen;
public void initialize() {
setSize(400, 400);
setLocationRelativeTo(null);
setTitle("Line Location Test");
Panel p = new Panel();
screen = new DrawScreen();
p.add(screen);
p.setLocation(50, 50);
p.setSize(300, 300);
add(p);
setBackground(Color.white);
setForeground(Color.blue);
setVisible(true);
}
public void requestCoordinates(Rectangle r) {
Point location = screen.getLocationOnScreen();
Dimension size = screen.getSize();
r.setBounds(location.x, location.y, size.width, size.height);
}
public static void main(String[] args) throws InterruptedException,
InvocationTargetException, AWTException {
LineLocationTest me = new LineLocationTest();
EventQueue.invokeAndWait(me::initialize);
try {
Robot robot = new Robot();
robot.delay(1000);
Rectangle coords = new Rectangle();
EventQueue.invokeAndWait(() -> {
me.requestCoordinates(coords);
});
BufferedImage capture = robot.createScreenCapture(coords);
robot.delay(2000);
for (int y = 0; y < capture.getHeight(); y++) {
for (int x = 0; x < capture.getWidth(); x++) {
int blue = Color.blue.getRGB();
if (capture.getRGB(x, y) == blue) {
throw new RuntimeException("Blue detected at " + x + ", " + y);
}
}
}
} finally {
EventQueue.invokeAndWait(me::dispose);
}
}
}
class DrawScreen extends Canvas {
public Dimension getPreferredSize() {
return new Dimension(300, 300);
}
public void paint(Graphics g) {
g.setColor(Color.blue);
g.drawLine(5, -3145583, 50, -3145583);
}
}
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