| /* |
| |
| Licensed to the Apache Software Foundation (ASF) under one or more |
| contributor license agreements. See the NOTICE file distributed with |
| this work for additional information regarding copyright ownership. |
| The ASF licenses this file to You 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.Button; |
| import java.awt.Color; |
| import java.awt.Graphics2D; |
| import java.awt.Image; |
| import java.awt.MediaTracker; |
| import java.awt.RenderingHints; |
| import java.awt.Toolkit; |
| import java.awt.image.BufferedImage; |
| import java.awt.image.ByteLookupTable; |
| import java.awt.image.LookupTable; |
| |
| /** |
| * This test validates the convertion of Java 2D LookupOp |
| * into an SVG filer. |
| * |
| * @author <a href="mailto:cjolif@ilog.fr">Christophe Jolif</a> |
| * @author <a href="mailto:vhardy@eng.sun.com">Vincent Hardy</a> |
| * @version $Id$ |
| */ |
| public class Lookup implements Painter { |
| public void paint(Graphics2D g) { |
| g.setRenderingHint(RenderingHints.KEY_ANTIALIASING, |
| RenderingHints.VALUE_ANTIALIAS_ON); |
| // |
| // Load Image |
| // |
| Image image = Toolkit.getDefaultToolkit().createImage("test-resources/org/apache/batik/svggen/resources/vangogh.png"); |
| MediaTracker tracker = new MediaTracker(new Button("")); |
| tracker.addImage(image, 0); |
| try{ |
| tracker.waitForAll(); |
| }catch(InterruptedException e){ |
| tracker.removeImage(image); |
| image = null; |
| }finally { |
| if(image != null) |
| tracker.removeImage(image); |
| if(tracker.isErrorAny()) |
| image = null; |
| if(image != null){ |
| if(image.getWidth(null)<0 || |
| image.getHeight(null)<0) |
| image = null; |
| } |
| } |
| |
| if(image == null){ |
| throw new Error("Could not load image"); |
| } |
| |
| BufferedImage bi = new BufferedImage(image.getWidth(null), |
| image.getHeight(null), BufferedImage.TYPE_INT_RGB); |
| Graphics2D ig = bi.createGraphics(); |
| ig.drawImage(image, 0, 0, null); |
| |
| byte[] lookup = new byte[256]; |
| for(int i=0; i<256; i++) |
| lookup[i] = (byte)(255 - i); |
| |
| LookupTable table = new ByteLookupTable(0, lookup); |
| java.awt.image.LookupOp inverter = new java.awt.image.LookupOp(table, null); |
| |
| // Simply paint the image without and with the lookup filter |
| g.setPaint(Color.black); |
| g.drawString("Normal / Inverted", 10, 20); |
| g.drawImage(image, 10, 30, null); |
| g.drawImage(bi, inverter, 10 + bi.getWidth() + 10, 30); |
| } |
| } |