jdk-24/test/jdk/java/awt/Toolkit/GetScreenInsetsCustomGC/GetScreenInsetsCustomGC.java

/*
 * 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.Dialog;
import java.awt.Dimension;
import java.awt.EventQueue;
import java.awt.Font;
import java.awt.FontMetrics;
import java.awt.Frame;
import java.awt.Graphics2D;
import java.awt.GraphicsConfiguration;
import java.awt.GraphicsDevice;
import java.awt.GraphicsEnvironment;
import java.awt.HeadlessException;
import java.awt.Image;
import java.awt.Insets;
import java.awt.PrintJob;
import java.awt.Rectangle;
import java.awt.Toolkit;
import java.awt.datatransfer.Clipboard;
import java.awt.font.TextAttribute;
import java.awt.geom.AffineTransform;
import java.awt.im.InputMethodHighlight;
import java.awt.image.BufferedImage;
import java.awt.image.ColorModel;
import java.awt.image.ImageObserver;
import java.awt.image.ImageProducer;
import java.net.URL;
import java.util.Map;
import java.util.Properties;

/**
 * @test
 * @bug 8233573
 * @key headful
 * @summary Toolkit.getScreenInsets should work for custom GraphicsConfiguration
 */
public final class GetScreenInsetsCustomGC {

    public static void main(final String[] args) {
        // Default GraphicsConfiguration
        GraphicsConfiguration dc =
                GraphicsEnvironment.getLocalGraphicsEnvironment()
                        .getDefaultScreenDevice()
                        .getDefaultConfiguration();
        // Custom GraphicsConfiguration
        GraphicsConfiguration cd = new _GraphicsConfiguration();
        // GraphicsConfiguration of BufferedImage
        BufferedImage bi = new BufferedImage(1, 1, BufferedImage.TYPE_INT_ARGB);
        Graphics2D g = bi.createGraphics();
        GraphicsConfiguration bic = g.getDeviceConfiguration();
        g.dispose();

        // Default toolkit

        // mey return empty and non-empty insets but never null
        if (Toolkit.getDefaultToolkit().getScreenInsets(dc) == null) {
            throw new NullPointerException();
        }
        // return empty insets only for non-default GC
        testEmpty(Toolkit.getDefaultToolkit().getScreenInsets(cd));
        testEmpty(Toolkit.getDefaultToolkit().getScreenInsets(bic));

        try {
            Toolkit.getDefaultToolkit().getScreenInsets(null);
            throw new RuntimeException("NullPointerException is not thrown");
        } catch (NullPointerException ignored) {
            // ok
        }

        // Custom toolkit

        Toolkit tk = new _Toolkit();
        // mey return empty and non-empty insets but never null
        if (tk.getScreenInsets(dc) == null) {
            throw new NullPointerException();
        }
        // return empty insets only for non-default GC
        testEmpty(tk.getScreenInsets(cd));
        testEmpty(tk.getScreenInsets(bic));

        try {
            tk.getScreenInsets(null);
            throw new RuntimeException("NullPointerException is not thrown");
        } catch (NullPointerException ignored) {
            // ok
        }
    }

    private static void testEmpty(final Insets insets) {
        if ((insets.left | insets.top | insets.bottom | insets.right) != 0) {
            System.err.println("Expected empty insets");
            System.err.println("Actual: " + insets);
            throw new RuntimeException();
        }
    }

    private static class _GraphicsConfiguration extends GraphicsConfiguration {

        @Override
        public GraphicsDevice getDevice() {
            return null;
        }

        @Override
        public ColorModel getColorModel() {
            return null;
        }

        @Override
        public ColorModel getColorModel(int transparency) {
            return null;
        }

        @Override
        public AffineTransform getDefaultTransform() {
            return null;
        }

        @Override
        public AffineTransform getNormalizingTransform() {
            return null;
        }

        @Override
        public Rectangle getBounds() {
            return null;
        }
    }

    private static class _Toolkit extends Toolkit {

        @Override
        public Dimension getScreenSize() throws HeadlessException {
            return null;
        }

        @Override
        public int getScreenResolution() throws HeadlessException {
            return 0;
        }

        @Override
        public ColorModel getColorModel() throws HeadlessException {
            return null;
        }

        @Override
        public String[] getFontList() {
            return new String[0];
        }

        @Override
        public FontMetrics getFontMetrics(Font font) {
            return null;
        }

        @Override
        public void sync() {

        }

        @Override
        public Image getImage(String filename) {
            return null;
        }

        @Override
        public Image getImage(URL url) {
            return null;
        }

        @Override
        public Image createImage(String filename) {
            return null;
        }

        @Override
        public Image createImage(URL url) {
            return null;
        }

        @Override
        public boolean prepareImage(Image image, int width, int height, ImageObserver observer) {
            return false;
        }

        @Override
        public int checkImage(Image image, int width, int height, ImageObserver observer) {
            return 0;
        }

        @Override
        public Image createImage(ImageProducer producer) {
            return null;
        }

        @Override
        public Image createImage(byte[] imagedata, int imageoffset, int imagelength) {
            return null;
        }

        @Override
        public PrintJob getPrintJob(Frame frame, String jobtitle, Properties props) {
            return null;
        }

        @Override
        public void beep() {

        }

        @Override
        public Clipboard getSystemClipboard() throws HeadlessException {
            return null;
        }

        @Override
        protected EventQueue getSystemEventQueueImpl() {
            return null;
        }

        @Override
        public boolean isModalityTypeSupported(Dialog.ModalityType modalityType) {
            return false;
        }

        @Override
        public boolean isModalExclusionTypeSupported(Dialog.ModalExclusionType modalExclusionType) {
            return false;
        }

        @Override
        public Map<TextAttribute, ?> mapInputMethodHighlight(InputMethodHighlight highlight) throws HeadlessException {
            return null;
        }
    }
}