/*
Copyright 2001,2003 The Apache Software Foundation
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.apache.batik.svggen;
import java.awt.AlphaComposite;
import java.awt.BasicStroke;
import java.awt.Color;
import java.awt.Graphics2D;
import java.awt.Rectangle;
import java.awt.RenderingHints;
/**
* This test color opacity on fill and strokes, because this
* is handled differently in the Java 2D API than in SVG.
*
* @author <a href="mailto:cjolif@ilog.fr">Christophe Jolif</a>
* @author <a href="mailto:vhardy@eng.sun.com">Vincent Hardy</a>
* @version $Id: Color2.java,v 1.4 2004/08/18 07:16:44 vhardy Exp $
*/
public class Color2 implements Painter {
public void paint(Graphics2D g) {
g.setRenderingHint(RenderingHints.KEY_ANTIALIASING,
RenderingHints.VALUE_ANTIALIAS_ON);
// Define Colors
Color blue = Color.blue;
Color green = Color.green;
Color transparentBlue = new Color(0, 0, 255, 128);
Color transparentGreen = new Color(0, 255, 0, 128);
// Define AlphaComposites
AlphaComposite srcOver = AlphaComposite.SrcOver;
AlphaComposite srcOverTransparent = AlphaComposite.getInstance(AlphaComposite.SRC_OVER, .5f);
// Define rectangle
Rectangle rect = new Rectangle(10, 40, 100, 50);
// Define thick stroke
BasicStroke thickStroke = new BasicStroke(5);
// First test: Opaque Colors with AlphaComposite
g.setPaint(Color.black);
g.drawString("Opaque Colors, Half Transparent AlphaComposite", 10, 30);
g.setComposite(srcOverTransparent);
g.setStroke(thickStroke);
g.setPaint(blue);
g.fill(rect);
g.setPaint(green);
g.draw(rect);
g.setPaint(Color.black);
g.fill(rect);
g.translate(0, 90);
// Second test: transparent color, opaque Source Over
g.setPaint(Color.black);
g.setComposite(srcOver);
g.drawString("Transparent Colors, Opaque AlphaComposite SrcOver", 10, 30);
g.setPaint(transparentBlue);
g.fill(rect);
g.setPaint(transparentGreen);
g.draw(rect);
}
}