117 lines
4.2 KiB
Java
117 lines
4.2 KiB
Java
/*
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* Copyright (c) 2019, 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.Canvas;
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import java.awt.EventQueue;
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import java.awt.Frame;
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import java.awt.image.BufferStrategy;
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import java.util.List;
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import javax.swing.JFrame;
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/**
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* @test
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* @bug 6933331
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* @key headful
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* @summary Tests that BufferStrategy works after the peer is recreated
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*/
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public final class ExceptionAfterComponentDispose {
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public static void main(final String[] args) throws Exception {
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// Will check Canvas on the main thread
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for (int size = -3; size < 3; ++size) {
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for (int numBuffers = 1; numBuffers < 3; ++numBuffers) {
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testCanvas(size, numBuffers);
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}
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}
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// Will check JFrame on EDT
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EventQueue.invokeAndWait(() -> {
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for (int size = -3; size < 3; ++size) {
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for (int numBuffers = 1; numBuffers < 3; ++numBuffers) {
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testJFrame(size, numBuffers);
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}
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}
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});
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}
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private static void testCanvas(final int size, final int numBuffers) {
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final Frame frame = new Frame();
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try {
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final Canvas canvas = new Canvas();
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frame.setLayout(null); // we would like to control the size
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frame.add(canvas);
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frame.pack(); // creates a peer
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canvas.setSize(size, size);
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// BufferStrategy works when the peer just created
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canvas.createBufferStrategy(numBuffers);
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final BufferStrategy bs = canvas.getBufferStrategy();
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if (bs.getDrawGraphics() == null) {
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throw new RuntimeException("DrawGraphics is null");
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}
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// BufferStrategy should work when the peer is recreated
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frame.dispose();
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frame.pack();
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if (canvas.getBufferStrategy() != bs) {
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throw new RuntimeException("BS was changed");
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}
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if (bs.getDrawGraphics() == null) {
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throw new RuntimeException("DrawGraphics is null");
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}
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} finally {
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frame.dispose();
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}
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}
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private static void testJFrame(final int size, final int numBuffers) {
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for (final boolean undecorated : List.of(true, false)) {
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final JFrame frame = new JFrame();
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try {
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frame.setUndecorated(undecorated);
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frame.pack(); // creates a peer
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frame.setSize(size, size);
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// BufferStrategy works when the peer just created
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frame.createBufferStrategy(numBuffers);
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final BufferStrategy bs = frame.getBufferStrategy();
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if (bs.getDrawGraphics() == null) {
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throw new RuntimeException("DrawGraphics is null");
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}
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// BufferStrategy should work when the peer is recreated
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frame.dispose();
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frame.pack();
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if (frame.getBufferStrategy() != bs) {
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throw new RuntimeException("BS was changed");
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}
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if (bs.getDrawGraphics() == null) {
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throw new RuntimeException("DrawGraphics is null");
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}
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} finally {
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frame.dispose();
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}
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}
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}
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}
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