src/demo/share/jfc/J2Ddemo/java2d/demos/Images/DukeAnim.java

/*
 *
 * Copyright (c) 2007, 2018, 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 nor 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
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 * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
 */
package java2d.demos.Images;


import java.awt.*;
import javax.swing.JButton;
import java.awt.image.ImageObserver;
import java2d.AnimatingSurface;
import java2d.DemoPanel;


/**
 * Animated gif with a transparent background.
 */
@SuppressWarnings("serial")
public class DukeAnim extends AnimatingSurface implements ImageObserver {

    private static Image agif, clouds;
    private static int aw, ah, cw;
    private int x;
    private JButton b;

    @SuppressWarnings("LeakingThisInConstructor")
    public DukeAnim() {
        setBackground(Color.white);
        clouds = getImage("clouds.jpg");
        agif = getImage("duke.running.gif");
        aw = agif.getWidth(this) / 2;
        ah = agif.getHeight(this) / 2;
        cw = clouds.getWidth(this);
        dontThread = true;
    }

    @Override
    public void reset(int w, int h) {
        b = ((DemoPanel) getParent()).tools.startStopB;
    }

    @Override
    public void step(int w, int h) {
    }

    @Override
    public void render(int w, int h, Graphics2D g2) {
        if ((x -= 3) <= -cw) {
            x = w;
        }
        g2.drawImage(clouds, x, 10, cw, h - 20, this);
        g2.drawImage(agif, w / 2 - aw, h / 2 - ah, this);
    }

    @Override
    public boolean imageUpdate(Image img, int infoflags,
            int x, int y, int width, int height) {
        if (b.isSelected() && (infoflags & ALLBITS) != 0) {
            repaint();
        }
        if (b.isSelected() && (infoflags & FRAMEBITS) != 0) {
            repaint();
        }
        return isShowing();
    }

    public static void main(String[] s) {
        createDemoFrame(new DukeAnim());
    }
}