TapTapTap.java Source code

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Here is the source code for TapTapTap.java

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/*
* Copyright (c) 2011, Oracle and/or its affiliates. All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
*
*   - Redistributions of source code must retain the above copyright
*     notice, this list of conditions and the following disclaimer.
*
*   - Redistributions in binary form must reproduce the above copyright
*     notice, this list of conditions and the following disclaimer in the
*     documentation and/or other materials provided with the distribution.
*
*   - Neither the name of Oracle or the names of its
*     contributors may be used to endorse or promote products derived
*     from this software without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS
* IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO,
* THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
* PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL THE COPYRIGHT OWNER OR
* CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
* EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
* PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
* PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF
* LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
* NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
* SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*/
import java.awt.*;
import java.awt.event.*;
import java.beans.PropertyChangeEvent;
import javax.swing.*;
import javax.swing.plaf.LayerUI;

public class TapTapTap {
    public static void main(String[] args) {
        javax.swing.SwingUtilities.invokeLater(new Runnable() {
            public void run() {
                new TapTapTap().createUI();
            }
        });
    }

    private JButton mOrderButton;

    public void createUI() {
        JFrame f = new JFrame("TapTapTap");

        final WaitLayerUI layerUI = new WaitLayerUI();
        JPanel panel = createPanel();
        JLayer<JPanel> jlayer = new JLayer<JPanel>(panel, layerUI);

        final Timer stopper = new Timer(4000, new ActionListener() {
            public void actionPerformed(ActionEvent ae) {
                layerUI.stop();
            }
        });
        stopper.setRepeats(false);

        mOrderButton.addActionListener(new ActionListener() {
            public void actionPerformed(ActionEvent ae) {
                layerUI.start();
                if (!stopper.isRunning()) {
                    stopper.start();
                }
            }
        });

        f.add(jlayer);

        f.setSize(300, 200);
        f.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
        f.setLocationRelativeTo(null);
        f.setVisible(true);
    }

    private JPanel createPanel() {
        JPanel p = new JPanel();

        ButtonGroup entreeGroup = new ButtonGroup();
        JRadioButton radioButton;
        p.add(radioButton = new JRadioButton("Beef", true));
        entreeGroup.add(radioButton);
        p.add(radioButton = new JRadioButton("Chicken"));
        entreeGroup.add(radioButton);
        p.add(radioButton = new JRadioButton("Vegetable"));
        entreeGroup.add(radioButton);

        p.add(new JCheckBox("Ketchup"));
        p.add(new JCheckBox("Mustard"));
        p.add(new JCheckBox("Pickles"));

        p.add(new JLabel("Special requests:"));
        p.add(new JTextField(20));

        mOrderButton = new JButton("Place Order");
        p.add(mOrderButton);

        return p;
    }
}

class WaitLayerUI extends LayerUI<JPanel> implements ActionListener {
    private boolean mIsRunning;
    private boolean mIsFadingOut;
    private Timer mTimer;

    private int mAngle;
    private int mFadeCount;
    private int mFadeLimit = 15;

    @Override
    public void paint(Graphics g, JComponent c) {
        int w = c.getWidth();
        int h = c.getHeight();

        // Paint the view.
        super.paint(g, c);

        if (!mIsRunning) {
            return;
        }

        Graphics2D g2 = (Graphics2D) g.create();

        float fade = (float) mFadeCount / (float) mFadeLimit;
        // Gray it out.
        Composite urComposite = g2.getComposite();
        g2.setComposite(AlphaComposite.getInstance(AlphaComposite.SRC_OVER, .5f * fade));
        g2.fillRect(0, 0, w, h);
        g2.setComposite(urComposite);

        // Paint the wait indicator.
        int s = Math.min(w, h) / 5;
        int cx = w / 2;
        int cy = h / 2;
        g2.setRenderingHint(RenderingHints.KEY_ANTIALIASING, RenderingHints.VALUE_ANTIALIAS_ON);
        g2.setStroke(new BasicStroke(s / 4, BasicStroke.CAP_ROUND, BasicStroke.JOIN_ROUND));
        g2.setPaint(Color.white);
        g2.rotate(Math.PI * mAngle / 180, cx, cy);
        for (int i = 0; i < 12; i++) {
            float scale = (11.0f - (float) i) / 11.0f;
            g2.drawLine(cx + s, cy, cx + s * 2, cy);
            g2.rotate(-Math.PI / 6, cx, cy);
            g2.setComposite(AlphaComposite.getInstance(AlphaComposite.SRC_OVER, scale * fade));
        }

        g2.dispose();
    }

    public void actionPerformed(ActionEvent e) {
        if (mIsRunning) {
            firePropertyChange("tick", 0, 1);
            mAngle += 3;
            if (mAngle >= 360) {
                mAngle = 0;
            }
            if (mIsFadingOut) {
                if (--mFadeCount == 0) {
                    mIsRunning = false;
                    mTimer.stop();
                }
            } else if (mFadeCount < mFadeLimit) {
                mFadeCount++;
            }
        }
    }

    public void start() {
        if (mIsRunning) {
            return;
        }

        // Run a thread for animation.
        mIsRunning = true;
        mIsFadingOut = false;
        mFadeCount = 0;
        int fps = 24;
        int tick = 1000 / fps;
        mTimer = new Timer(tick, this);
        mTimer.start();
    }

    public void stop() {
        mIsFadingOut = true;
    }

    @Override
    public void applyPropertyChange(PropertyChangeEvent pce, JLayer l) {
        if ("tick".equals(pce.getPropertyName())) {
            l.repaint();
        }
    }
}