/*
* @ ( # ) ACimages . java 1 . 6 98 / 12 / 03
*
* Copyright 1998 by Sun Microsystems , Inc . ,
* 901 San Antonio Road , Palo Alto , California , 94303 , U . S . A .
* All rights reserved .
*
* This software is the confidential and proprietary information
* of Sun Microsystems , Inc . ( " Confidential Information " ) . You
* shall not disclose such Confidential Information and shall use
* it only in accordance with the terms of the license agreement
* you entered into with Sun .
*/
import java.awt.*;
import java.awt.event.*;
import java.awt.geom.Ellipse2D;
import java.awt.geom.Rectangle2D;
import java.awt.geom.RoundRectangle2D;
import java.awt.font.TextLayout;
import java.awt.font.FontRenderContext;
import javax.swing.*;
import java.net.URL;
/**
* The ACimages class demonstrates compositing shapes over images .
*/
public class ACimages extends JApplet {
private static String s[] = { "box" , "fight" , "magnify" ,
"boxwave" , "globe" , "snooze" ,
"tip" , "thumbsup" , "dukeplug" };
private static Image imgs[] = new Image[s.length];
private static Color colors[] = { Color.blue, Color.cyan, Color.green,
Color.magenta, Color.orange, Color.pink,
Color.red, Color.yellow, Color.lightGray };
public void init() {
setBackground(Color.white);
Toolkit tk = getToolkit();
for (int i = 0 ; i < imgs.length; i++) {
imgs[i] = tk.getImage(ACimages.class .getResource(s[i] + ".gif" ));
try {
MediaTracker tracker = new MediaTracker(this );
tracker.addImage(imgs[i], 0 );
tracker.waitForID(0 );
} catch (Exception e) {}
}
}
public void drawDemo(int w, int h, Graphics2D g2) {
float alpha = 0 .0 f;
int iw = w/3 ;
int ih = (h-45 )/3 ;
float xx = 0 , yy = 15 ;
for (int i =0 ; i < imgs.length; i++) {
/*
* arranges the images so that they are displayed three across
* and three down
*/
xx = (i%3 == 0 ) ? 0 : xx+w/3 ;
switch (i) {
case 3 : yy = h/3 +15 ; break ;
case 6 : yy = h/3 *2 +15 ;
}
// set the compositing rule to SRC_OVER for the drawString call
g2.setComposite(AlphaComposite.SrcOver);
g2.setColor(Color.black);
// creates a new AlphaComposite and adds .1 to its alpha value
AlphaComposite ac = AlphaComposite.getInstance(AlphaComposite.SRC_OVER, alpha += .1 f);
// draws the String that displays the alpha value
String s = "a=" + Float .toString(alpha).substring(0 ,3 );
g2.drawString(s, (int ) xx+3 , (int ) yy-2 );
Shape shape=null ;
switch (i%3 ) {
case 0 : shape = new Ellipse2D.Float (xx, yy, iw, ih);
break ;
case 1 : shape = new RoundRectangle2D.Float (xx, yy, iw, ih, 25 , 25 );
break ;
case 2 : shape = new Rectangle2D.Float (xx, yy, iw, ih);
break ;
}
g2.setColor(colors[i]);
g2.setComposite(ac);
g2.fill(shape);
g2.drawImage(imgs[i], (int ) xx, (int ) yy, iw, ih, null );
}
}
public void paint(Graphics g) {
Graphics2D g2 = (Graphics2D) g;
Dimension d = getSize();
g2.setBackground(getBackground());
g2.clearRect(0 , 0 , d.width, d.height);
g2.setRenderingHint(RenderingHints.KEY_ANTIALIASING,
RenderingHints.VALUE_ANTIALIAS_ON);
g2.setRenderingHint(RenderingHints.KEY_RENDERING,
RenderingHints.VALUE_RENDER_QUALITY);
drawDemo(d.width, d.height, g2);
}
public static void main(String argv[]) {
final ACimages demo = new ACimages();
demo.init();
JFrame f = new JFrame("Java 2D(TM) Demo - ACimages" );
f.addWindowListener(new WindowAdapter() {
public void windowClosing(WindowEvent e) {System.exit(0 );}
});
f.getContentPane().add("Center" , demo);
f.pack();
f.setSize(new Dimension(400 ,300 ));
f.show();
}
}
Messung V0.5 in Prozent C=96 H=84 G=90
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(vorverarbeitet am 2026-09-27)
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