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/*
* Copyright (c) 2020, 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.AlphaComposite;
import java.awt.Color;
import java.awt.Dialog;
import java.awt.FileDialog;
import java.awt.Graphics2D;
import java.awt.Image;
import java.awt.image.BufferedImage;
import java.awt.image.ImageObserver;
import java.io.File;
import java.io.IOException;
import javax.imageio.ImageIO;
import static java.awt.image.BufferedImage.TYPE_INT_ARGB_PRE;
/**
* @test
* @key headful
* @bug 8238276
* @summary Verifies that create/prepare/checkImage work properly for FileDialog
*/
public final class ImageOperations {
public static void main(String[] args) throws Exception {
BufferedImage gold = new BufferedImage(255, 255, TYPE_INT_ARGB_PRE);
BufferedImage target = new BufferedImage(255, 255, TYPE_INT_ARGB_PRE);
fill(gold);
FileDialog fd = new FileDialog((Dialog) null);
fd.pack();
try {
Image image = fd.createImage(gold.getSource());
if (image == null) {
throw new NullPointerException();
}
if (!fd.prepareImage(image, null)) {
Thread.sleep(100);
}
if ((fd.checkImage(image, null) & ImageObserver.ALLBITS) == 0) {
throw new RuntimeException("Image should be loaded already");
}
Graphics2D graphics = (Graphics2D) target.getGraphics();
graphics.setComposite(AlphaComposite.Src);
graphics.drawImage(image, 0, 0, null);
graphics.dispose();
validate(gold, target);
} finally {
fd.dispose();
}
}
/**
* Fills the whole image using different alpha for each row.
*
* @param image to fill
*/
private static void fill(Image image) {
Graphics2D graphics = (Graphics2D) image.getGraphics();
graphics.setComposite(AlphaComposite.Src);
graphics.setColor(Color.GREEN);
graphics.fillRect(0, 0, image.getWidth(null), image.getHeight(null));
for (int i = 0; i < 255; ++i) {
graphics.setColor(new Color(23, 127, 200, i));
graphics.fillRect(0, i, image.getWidth(null), 1);
}
graphics.dispose();
}
private static void validate(BufferedImage bi, BufferedImage goldbi)
throws IOException {
for (int x = 0; x < bi.getWidth(); ++x) {
for (int y = 0; y < bi.getHeight(); ++y) {
if (goldbi.getRGB(x, y) != bi.getRGB(x, y)) {
System.out.println("x = " + x);
System.out.println("y = " + y);
ImageIO.write(bi, "png", new File("actual.png"));
ImageIO.write(goldbi, "png", new File("expected.png"));
throw new RuntimeException("Test failed.");
}
}
}
}
}
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