EasterGlassPane.java

/**
 * Copyright 1999-2009 The Pegadi Team
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *     http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */
package org.pegadi.artis;

import javax.swing.*;
import java.awt.*;
import java.awt.event.ActionEvent;
import java.awt.event.ActionListener;
import java.awt.event.MouseEvent;
import java.awt.event.MouseListener;
import java.util.Random;


public class EasterGlassPane extends JComponent  implements ActionListener,MouseListener {


    javax.swing.Timer animator;

    ImageIcon icon[] = new ImageIcon[1];

    Font font1 = new Font("Sans Serif", Font.PLAIN, 13);

    int tmpScale;

    final static int numImages = 1;

    double x[] = new double[numImages];
    double y[] = new double[numImages];

    int xh[] = new int[numImages];
    int yh[] = new int[numImages];
    String stuf[] = {"survival guide", "erotic novel", "love letter", "great article", "movie script", "biography", "fantasy novel", "thriller", "legislation"};
    String stuffern;
    String stuffernArticle;

    double scale[] = new double[numImages];

    EasterRandom rand  = new EasterRandom();

    long start;

    public EasterGlassPane() {

    }

    public void go() {

        start = System.currentTimeMillis();

        addMouseListener(this);
        setVisible(true);

        icon[0] = new ImageIcon(getClass().getResource("/images/pegadi_assistant.png"));
        scale[0] = 1.0;
        y[0] = 300;
        stuffern = stuf[(int)(Math.random()*stuf.length)];
        char acter = stuffern.charAt(0);
        stuffernArticle = (acter=='a'|| acter=='e'|| acter=='i'|| acter=='o'|| acter=='u'|| acter=='A'|| acter=='E'|| acter=='I'|| acter=='O'|| acter=='U') ? "an" : "a";

        animator = new javax.swing.Timer(22 + 22 + 22, this);
        animator.start();
    }

    public void stop() {
        animator.stop();
        removeMouseListener(this);
        setVisible(false);
    }

    public void paint(Graphics g) {

        for(int i = 0; i < numImages; i++) {
            if(x[i] > 3*i) {
                x[i] += 0.025;
                y[i] += 0.1;
                yh[i] = (int) (Math.sin(y[i])*20)-icon[0].getIconHeight()+450;
                xh[i] = (int) (Math.sin(x[i])*20)-icon[0].getIconWidth()+500;
                if(isVisible()) {
                    g.drawImage(icon[0].getImage(), xh[0], yh[0],icon[0].getIconWidth(), icon[0].getIconHeight(), this);
                    g.setFont(font1);
                    g.drawString(stuffernArticle + " " + stuffern + ".", xh[0]+6, yh[0]+49);
                    g.drawString(stuffern, xh[0]+26, yh[0]+132);
                    g.drawString(stuffern, xh[0]+28, yh[0]+166);
                }
            } else {
                x[i] += .05;
                y[i] += .05;
            }
        }
    }

    class EasterRandom extends Random {

        public int nextInt(int n) {
            if (n<=0)
                throw new IllegalArgumentException("n must be positive");

            if ((n & -n) == n)  // i.e., n is a power of 2
                return (int)((n * (long)next(31)) >> 31);

            int bits, val;
            do {
                bits = next(31);
                val = bits % n;
            } while(bits - val + (n-1) < 0);
            return val;
        }
    }



    public void nudge(int i) {
        x[i] += (double) rand.nextInt(1000) / 8756;
        y[i] += (double) rand.nextInt(1000) / 5432;
        int tmpScale = (int) (Math.abs(Math.sin(x[i])) * 10);
        scale[i] = (double) tmpScale / 10;
        int nudgeX = (int) (((double) getWidth()/2) * .8);
        int nudgeY = (int) (((double) getHeight()/2) * .60);
        xh[i] = (int) (Math.sin(x[i])) * nudgeX + nudgeX;
        yh[i] = (int) (Math.sin(y[i])) * nudgeY + nudgeY;
    }

    public void squish(Graphics g, ImageIcon icon, int x, int y, double scale) {
        if(isVisible()) {
            g.drawImage(icon.getImage(), x, y,
                            (int) (icon.getIconWidth()*scale),
                        (int) (icon.getIconHeight()*scale),
                        this);
        }
    }

    public void actionPerformed(ActionEvent e) {
        // Stop animation after 20 secs
        if(System.currentTimeMillis()-start > 20000) {
            stop();
            return;
        }


        if(isVisible()) {
            repaint();
        } else {
                animator.stop();
        }
    }

    public void mouseClicked(MouseEvent e) {
        stop();
    }

    public void mouseEntered(MouseEvent e) {

    }

    public void mousePressed(MouseEvent e) {

    }
    public void mouseReleased(MouseEvent e) {

    }

    public void mouseMoved(MouseEvent e) {

    }

    public void mouseDragged(MouseEvent e) {

    }

    public void mouseExited(MouseEvent e) {

    }

}