Mega Code Archive
Layers - Try to use alpha values (transparency) to draw in layers
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/*
* Copyright (c) Ian F. Darwin, http://www.darwinsys.com/, 1996-2002.
* All rights reserved. Software written by Ian F. Darwin and others.
* $Id: LICENSE,v 1.8 2004/02/09 03:33:38 ian Exp $
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. 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.
*
* THIS SOFTWARE IS PROVIDED BY THE AUTHOR 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 AUTHOR 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.
*
* Java, the Duke mascot, and all variants of Sun's Java "steaming coffee
* cup" logo are trademarks of Sun Microsystems. Sun's, and James Gosling's,
* pioneering role in inventing and promulgating (and standardizing) the Java
* language and environment is gratefully acknowledged.
*
* The pioneering role of Dennis Ritchie and Bjarne Stroustrup, of AT&T, for
* inventing predecessor languages C and C++ is also gratefully acknowledged.
*/
import java.awt.Color;
import java.awt.Graphics;
import javax.swing.JFrame;
/**
* Layers - Try to use "alpha values (transparency) to draw in layers.
*
* @author Ian Darwin, http://www.darwinsys.com/
* @version $Id: Layers.java,v 1.5 2004/02/09 03:33:49 ian Exp $
*/
public class Layers extends JFrame {
int width, height;
Layers(String s) {
this(s, 400, 300);
}
Layers(String s, int w, int h) {
setTitle(s);
setSize(width = w, height = h); // a short form
setBackground(Color.black);
setDefaultCloseOperation(EXIT_ON_CLOSE);
}
public void paint(Graphics g) {
Color c1 = new Color(200, 100, 100, 50); // r, g, b, a
Color c2 = new Color(100, 200, 000, 128);
Color c3 = new Color(100, 200, 000, 255);
g.setColor(c1);
g.fillRect(0, 0, width / 2, height / 2);
g.setColor(c2);
g.fillRect(width / 4, height / 4, width / 2, height / 2);
g.setColor(c3);
g.fillRect(width / 3, height / 3, width / 4, height / 4);
}
public static void main(String[] a) {
new Layers("Default Size").setVisible(true);
new Layers("Smaller", 100, 100).setVisible(true);
}
}
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