104 lines
3.4 KiB
Java
104 lines
3.4 KiB
Java
/*
|
|
* Copyright (c) 1999, 2024, 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 4188744
|
|
* @summary This test verifies that copyArea performs correctly for negative offset values.
|
|
* The correct output shows that the text area is moved to the left and down,
|
|
* leaving some garbage on the right and the top.
|
|
* The incorrect copy would show the text area garbled and no text is legible.
|
|
* @library /java/awt/regtesthelpers
|
|
* @build PassFailJFrame
|
|
* @run main/manual CopyNegative
|
|
*/
|
|
|
|
import java.awt.Color;
|
|
import java.awt.Dimension;
|
|
import java.awt.Frame;
|
|
import java.awt.Graphics;
|
|
import java.awt.Image;
|
|
import java.awt.Panel;
|
|
|
|
public class CopyNegative extends Panel {
|
|
|
|
private static final String INSTRUCTIONS = """
|
|
This test verifies that copyArea performs correctly for negative offset values.
|
|
The test draws text in an image, then copies the contents repeatedly.
|
|
The correct output shows that the text is moved to the left and down,
|
|
leaving some garbage on the top / right and some legible text at the bottom left.
|
|
The incorrect copy would show the whole text area garbled and no text is legible.
|
|
""";
|
|
|
|
public static void main(String[] argv) throws Exception {
|
|
PassFailJFrame.builder()
|
|
.title("CopyNegativeTest")
|
|
.instructions(INSTRUCTIONS)
|
|
.testUI(CopyNegative::createUI)
|
|
.testTimeOut(5)
|
|
.rows(10)
|
|
.columns(50)
|
|
.build()
|
|
.awaitAndCheck();
|
|
}
|
|
|
|
Image img;
|
|
|
|
static final int W = 200, H = 200;
|
|
|
|
static Frame createUI() {
|
|
Frame f = new Frame("CopyNegative");
|
|
f.add(new CopyNegative());
|
|
f.pack();
|
|
return f;
|
|
}
|
|
|
|
public Dimension getPreferredSize() {
|
|
return new Dimension(W, H);
|
|
}
|
|
|
|
private void doCopy() {
|
|
Graphics g = img.getGraphics();
|
|
g.setColor(Color.white);
|
|
g.fillRect(0, 0, W, H);
|
|
g.setColor(Color.black);
|
|
String text = "Some Text To Display, it is long enough to fill the entire display line.";
|
|
StringBuffer sb = new StringBuffer(text);
|
|
|
|
for (int i = 1; i < 50; i++) {
|
|
g.drawString(sb.toString(), 5,20 * i - 10);
|
|
sb.insert(0, Integer.toString(i));
|
|
}
|
|
for (int i = 0 ; i < 20 ; i++ ) {
|
|
g.copyArea(0, 0, W, H, -3, 3);
|
|
}
|
|
}
|
|
|
|
public void paint(Graphics g) {
|
|
img = createImage(W, H);
|
|
doCopy();
|
|
g.drawImage(img, 0, 0, this);
|
|
}
|
|
|
|
}
|