/*

 * Copyright (c) 2014, 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.

 */

/* @test

 * @bug 8041982

 * @summary Use of animated icon in JLayer causes CPU spin

 * @author Alexander Potochkin

 */

import javax.swing.*;

import javax.swing.plaf.LayerUI;

import java.awt.*;

import java.beans.PropertyChangeEvent;

public class bug8041982 extends JFrame {

    public bug8041982() {

        setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);

        add(new JLayer<>(new JPanel(), new BusyLayer()));

        setSize(200, 300);

        setVisible(true);

    }

    public static void main(String... args) throws Exception {

        SwingUtilities.invokeLater(new Runnable() {

            public void run() {

                new bug8041982().setVisible(true);

            }

        });

        Thread.sleep(5000);

    }

    private class BusyLayer extends LayerUI<JComponent> {

        private volatile boolean animated = true;

        private Icon icon = new ImageIcon(bug8041982.class.getResource("cupanim.gif"));

        private int imageUpdateCount;

        @Override

        public void paint(Graphics g, JComponent c) {

            super.paint(g, c);

            if (isAnimated()) {

                icon.paintIcon(c, g, c.getWidth() / 2 - icon.getIconWidth() /

                        2,

                        c.getHeight() / 2 - icon.getIconHeight() / 2);

            }

        }

        public boolean isAnimated() {

            return animated;

        }

        public void setAnimated(boolean animated) {

            if (this.animated != animated) {

                this.animated = animated;

                firePropertyChange("animated", !animated, animated);

            }

        }

        @Override

        public void applyPropertyChange(PropertyChangeEvent evt, JLayer l) {

            // this will be called when the busy flag is changed

            l.repaint();

        }

        @Override

        public boolean imageUpdate(Image img, int infoflags, int x, int y, int w, int h, JLayer<? extends JComponent> l) {

            System.out.println("imageUpdate " + imageUpdateCount);

            if (imageUpdateCount++ == 100) {

                setAnimated(false);

            } else if (imageUpdateCount > 100) {

                throw new RuntimeException("Test failed");

            }

            return isAnimated() && super.imageUpdate(img, infoflags, x, y, w, h, l);

        }

    }

}