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8286624: Regression Test CoordinateTruncationBug.java fails on OL8.3
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Backport-of: c71d87e54ca0c0173583bed978e06c7faa0fa283
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Victor Rudometov authored and Paul Hohensee committed Nov 21, 2022
1 parent 1459277 commit 7964440
Showing 1 changed file with 271 additions and 0 deletions.
271 changes: 271 additions & 0 deletions test/jdk/sun/java2d/SunGraphics2D/CoordinateTruncationBug.java
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/*
* Copyright (c) 2003, 2022, 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 4975116 7040022 8023577 8025447 8286624
* @key headful
* @summary verify the rounding of negative coordinates in Shape objects
* @run main/othervm CoordinateTruncationBug
*/

import java.awt.Frame;
import java.awt.Canvas;
import java.awt.Graphics;
import java.awt.Graphics2D;
import java.awt.Robot;
import java.awt.Rectangle;
import java.awt.Point;
import java.awt.Dimension;
import java.awt.Color;
import java.awt.AWTException;
import java.awt.geom.Line2D;
import java.awt.image.BufferedImage;
import java.awt.image.VolatileImage;

public class CoordinateTruncationBug {
static boolean failure;
static boolean verbose;

static final int W = 80;
static final int H = 80;

static final Line2D vertline = new Line2D.Float(-0.7f, 0f, -0.7f, H);
static final Line2D horizline = new Line2D.Float(0f, -0.7f, W, -0.7f);

public static void main(String argv[]) {
verbose = (argv.length > 0);
new Screen().test();
new BufImg().test();
new VolImg().test();
if (failure) {
throw new RuntimeException("Test failed due to 1 or more failures");
}
}

public static abstract class Test {
public abstract String getName();
public abstract void makeDest();
public abstract void runTest();
public abstract void dispose();
public abstract BufferedImage getSnapshot();

public void test() {
makeDest();
runTest();
dispose();
}

public void runTest(Graphics2D g2d) {
g2d.setColor(Color.white);
g2d.fillRect(0, 0, W, H);

if (!checkAllWhite()) {
System.err.println("Aborting test of "+getName()+
" due to readback failure!");
return;
}

g2d.setColor(Color.red);
g2d.draw(vertline);
g2d.draw(horizline);
if (!checkAllWhite()) {
System.err.println(getName()+" failed!");
failure = true;
}
}

public boolean checkAllWhite() {
BufferedImage bimg = getSnapshot();
if (bimg == null) {
System.err.println(getName()+" returned null snapshot!");
return false;
}
boolean ret = true;
for (int y = 0; y < H; y++) {
for (int x = 0; x < W; x++) {
int rgb = bimg.getRGB(x, y);
if (rgb != -1) {
System.err.println(getName()+"("+x+", "+y+") == "+
Integer.toHexString(rgb));
if (verbose) {
ret = false;
} else {
return false;
}
}
}
}
return ret;
}
}

public static class Screen extends Test {
Frame frame;
TestCanvas canvas;

public String getName() {
return "Screen";
}

public void makeDest() {
frame = new Frame("Screen test");
frame.setUndecorated(true);
canvas = new TestCanvas(this);
frame.add(canvas);
frame.pack();
frame.setLocationRelativeTo(null);
}

public void runTest() {
frame.show();
canvas.waitForTest();
}

public Graphics2D createGraphics() {
return null;
}

public BufferedImage getSnapshot() {
// bypass window animation
try {
Thread.sleep(500);
} catch (InterruptedException e) {
};

try {
Robot r = new Robot();
Point p = canvas.getLocationOnScreen();
return r.createScreenCapture(new Rectangle(p.x, p.y, W, H));
} catch (AWTException e) {
return null;
}
}

public void dispose() {
frame.hide();
frame.dispose();
}

public static class TestCanvas extends Canvas {
Test test;
boolean done;

public TestCanvas(Test test) {
this.test = test;
}

public Dimension getPreferredSize() {
return new Dimension(W, H);
}

public synchronized void waitForTest() {
while (!done) {
try {
wait();
} catch (InterruptedException e) {
System.err.println(getName()+" interrupted!");
failure = true;
break;
}
}
}

public void paint(Graphics g) {
if (!done) {
test.runTest((Graphics2D) g);
notifyDone();
}
}

public synchronized void notifyDone() {
done = true;
notifyAll();
}
}
}

public abstract static class Standalone extends Test {
public abstract Graphics2D createGraphics();

public void runTest() {
Graphics2D g2d = createGraphics();
runTest(g2d);
g2d.dispose();
}
}

public static class BufImg extends Standalone {
public BufferedImage bimg;

public String getName() {
return "BufferedImage";
}

public void makeDest() {
bimg = new BufferedImage(W, H, BufferedImage.TYPE_INT_RGB);
}

public Graphics2D createGraphics() {
return bimg.createGraphics();
}

public BufferedImage getSnapshot() {
return bimg;
}

public void dispose() {
}
}

public static class VolImg extends Standalone {
Frame frame;
VolatileImage vimg;

public String getName() {
return "VolatileImage";
}

public void makeDest() {
frame = new Frame();
frame.setSize(W, H);
frame.setLocationRelativeTo(null);
frame.show();
vimg = frame.createVolatileImage(W, H);
}

public Graphics2D createGraphics() {
return vimg.createGraphics();
}

public BufferedImage getSnapshot() {
return vimg.getSnapshot();
}

public void dispose() {
vimg.flush();
frame.hide();
frame.dispose();
}
}
}

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