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8233573: Toolkit.getScreenInsets(GraphicsConfiguration) may throw Cla…
…ssCastException Reviewed-by: prr, jdv
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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.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; | ||
| } | ||
| } | ||
| } |