109 lines
3.8 KiB
Java
109 lines
3.8 KiB
Java
/*
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* Copyright (c) 2020, Oracle and/or its affiliates. All rights reserved.
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* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
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*
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* This code is free software; you can redistribute it and/or modify it
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* under the terms of the GNU General Public License version 2 only, as
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* published by the Free Software Foundation.
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*
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* This code is distributed in the hope that it will be useful, but WITHOUT
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* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
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* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
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* version 2 for more details (a copy is included in the LICENSE file that
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* accompanied this code).
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*
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* You should have received a copy of the GNU General Public License version
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* 2 along with this work; if not, write to the Free Software Foundation,
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* Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
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*
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* Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
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* or visit www.oracle.com if you need additional information or have any
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* questions.
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*/
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import java.awt.AlphaComposite;
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import java.awt.Color;
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import java.awt.Dialog;
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import java.awt.FileDialog;
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import java.awt.Graphics2D;
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import java.awt.Image;
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import java.awt.image.BufferedImage;
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import java.awt.image.ImageObserver;
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import java.io.File;
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import java.io.IOException;
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import javax.imageio.ImageIO;
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import static java.awt.image.BufferedImage.TYPE_INT_ARGB_PRE;
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/**
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* @test
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* @key headful
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* @bug 8238276
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* @summary Verifies that create/prepare/checkImage work properly for FileDialog
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*/
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public final class ImageOperations {
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public static void main(String[] args) throws Exception {
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BufferedImage gold = new BufferedImage(255, 255, TYPE_INT_ARGB_PRE);
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BufferedImage target = new BufferedImage(255, 255, TYPE_INT_ARGB_PRE);
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fill(gold);
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FileDialog fd = new FileDialog((Dialog) null);
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fd.pack();
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try {
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Image image = fd.createImage(gold.getSource());
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if (image == null) {
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throw new NullPointerException();
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}
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if (!fd.prepareImage(image, null)) {
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Thread.sleep(100);
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}
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if ((fd.checkImage(image, null) & ImageObserver.ALLBITS) == 0) {
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throw new RuntimeException("Image should be loaded already");
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}
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Graphics2D graphics = (Graphics2D) target.getGraphics();
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graphics.setComposite(AlphaComposite.Src);
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graphics.drawImage(image, 0, 0, null);
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graphics.dispose();
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validate(gold, target);
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} finally {
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fd.dispose();
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}
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}
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/**
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* Fills the whole image using different alpha for each row.
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*
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* @param image to fill
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*/
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private static void fill(Image image) {
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Graphics2D graphics = (Graphics2D) image.getGraphics();
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graphics.setComposite(AlphaComposite.Src);
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graphics.setColor(Color.GREEN);
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graphics.fillRect(0, 0, image.getWidth(null), image.getHeight(null));
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for (int i = 0; i < 255; ++i) {
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graphics.setColor(new Color(23, 127, 200, i));
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graphics.fillRect(0, i, image.getWidth(null), 1);
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}
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graphics.dispose();
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}
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private static void validate(BufferedImage bi, BufferedImage goldbi)
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throws IOException {
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for (int x = 0; x < bi.getWidth(); ++x) {
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for (int y = 0; y < bi.getHeight(); ++y) {
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if (goldbi.getRGB(x, y) != bi.getRGB(x, y)) {
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System.out.println("x = " + x);
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System.out.println("y = " + y);
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ImageIO.write(bi, "png", new File("actual.png"));
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ImageIO.write(goldbi, "png", new File("expected.png"));
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throw new RuntimeException("Test failed.");
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}
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}
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}
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}
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}
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