134 lines
4.2 KiB
Java
134 lines
4.2 KiB
Java
/*
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* Copyright (c) 2001, 2023, 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.Color;
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import java.awt.Component;
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import java.awt.Dimension;
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import java.awt.EventQueue;
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import java.awt.FontMetrics;
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import java.awt.Frame;
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import java.awt.Graphics;
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import java.awt.Panel;
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import java.awt.Robot;
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import java.util.concurrent.atomic.AtomicInteger;
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/*
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* @test
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* @bug 4394287
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* @key headful
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* @summary Paint pending on heavyweight component move
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*/
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public class RepaintTest {
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private static Frame frame;
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private static Panel panel;
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private static volatile IncrementComponent counter;
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public static void main(String[] args) throws Exception {
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try {
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Robot robot = new Robot();
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EventQueue.invokeAndWait(RepaintTest::createAndShowUI);
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robot.waitForIdle();
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robot.delay(1000);
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EventQueue.invokeAndWait(() -> panel.setLocation(panel.getX() + 10,
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panel.getY() + 10));
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robot.waitForIdle();
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robot.delay(500);
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int count = counter.getCount().get();
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EventQueue.invokeAndWait(panel::repaint);
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robot.waitForIdle();
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robot.delay(1000);
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if (counter.getCount().get() == count) {
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throw new RuntimeException("Failed");
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}
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} finally {
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EventQueue.invokeAndWait(() -> {
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if (frame != null) {
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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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private static void createAndShowUI() {
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frame = new MyFrame("Repaint Test");
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frame.setLayout(null);
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counter = new IncrementComponent();
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panel = new Panel();
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panel.add(counter);
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frame.add(panel);
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panel.setBounds(0, 0, 100, 100);
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frame.setSize(200, 200);
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frame.setLocationRelativeTo(null);
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frame.setVisible(true);
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}
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private static class MyFrame extends Frame {
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public MyFrame(String title) {
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super(title);
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}
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public void update(Graphics g) {
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System.out.println("UPDATE: " + g.getClipBounds());
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super.update(g);
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}
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public void paint(Graphics g) {
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System.out.println("PAINT: " + g.getClipBounds());
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super.paint(g);
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}
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}
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// Subclass of Component, everytime paint is invoked a counter
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// is incremented, this counter is displayed in the component.
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private static class IncrementComponent extends Component {
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private static final AtomicInteger paintCount = new AtomicInteger(0);
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public Dimension getPreferredSize() {
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return new Dimension(100, 100);
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}
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public AtomicInteger getCount() {
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return paintCount;
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}
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public void paint(Graphics g) {
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g.setColor(Color.red);
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g.fillRect(0, 0, getWidth(), getHeight());
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g.setColor(Color.white);
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String string = Integer.toString(paintCount.getAndIncrement());
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FontMetrics metrics = g.getFontMetrics();
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int x = (getWidth() - metrics.stringWidth(string)) / 2;
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int y = (getHeight() + metrics.getHeight()) / 2;
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g.drawString(string, x, y);
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}
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}
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}
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