| /* |
| * Copyright (c) 2008, 2015, Oracle and/or its affiliates. All rights reserved. |
| * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. |
| * |
| * This code is free software; you can redistribute it and/or modify it |
| * under the terms of the GNU General Public License version 2 only, as |
| * published by the Free Software Foundation. |
| * |
| * This code is distributed in the hope that it will be useful, but WITHOUT |
| * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or |
| * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License |
| * version 2 for more details (a copy is included in the LICENSE file that |
| * accompanied this code). |
| * |
| * You should have received a copy of the GNU General Public License version |
| * 2 along with this work; if not, write to the Free Software Foundation, |
| * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. |
| * |
| * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA |
| * or visit www.oracle.com if you need additional information or have any |
| * questions. |
| * |
| */ |
| package com.sun.hotspot.igv.svg; |
| |
| import java.awt.Graphics2D; |
| import java.io.Writer; |
| import java.io.File; |
| import java.lang.reflect.Constructor; |
| import java.lang.reflect.InvocationTargetException; |
| import java.lang.reflect.Method; |
| import java.net.MalformedURLException; |
| import java.net.URL; |
| import java.net.URLClassLoader; |
| import org.w3c.dom.DOMImplementation; |
| |
| /** |
| * Utility class |
| * @author Thomas Wuerthinger |
| */ |
| public class BatikSVG { |
| |
| private BatikSVG() { |
| } |
| |
| private static Constructor SVGGraphics2DConstructor; |
| private static Method streamMethod; |
| private static Method createDefaultMethod; |
| private static Method getDOMImplementationMethod; |
| private static Method setEmbeddedFontsOnMethod; |
| private static Class<?> classSVGGraphics2D; |
| |
| /** |
| * Creates a graphics object that allows to be exported to SVG data using the {@link #printToStream(Graphics2D, Writer, boolean) printToStream} method. |
| * @return the newly created Graphics2D object or null if the library does not exist |
| */ |
| public static Graphics2D createGraphicsObject() { |
| try { |
| if (SVGGraphics2DConstructor == null) { |
| String batikJar = System.getenv().get("IGV_BATIK_JAR"); |
| if (batikJar == null) { |
| return null; |
| } |
| // Load batik in it's own class loader since some it's support jars interfere with the JDK |
| URL url = new File(batikJar).toURI().toURL(); |
| ClassLoader cl = new URLClassLoader(new URL[] { url }); |
| Class<?> classGenericDOMImplementation = cl.loadClass("org.apache.batik.dom.GenericDOMImplementation"); |
| Class<?> classSVGGeneratorContext = cl.loadClass("org.apache.batik.svggen.SVGGeneratorContext"); |
| classSVGGraphics2D = cl.loadClass("org.apache.batik.svggen.SVGGraphics2D"); |
| getDOMImplementationMethod = classGenericDOMImplementation.getDeclaredMethod("getDOMImplementation", new Class[0]); |
| createDefaultMethod = classSVGGeneratorContext.getDeclaredMethod("createDefault", new Class[]{org.w3c.dom.Document.class}); |
| setEmbeddedFontsOnMethod = classSVGGeneratorContext.getDeclaredMethod("setEmbeddedFontsOn", new Class[]{boolean.class}); |
| streamMethod = classSVGGraphics2D.getDeclaredMethod("stream", Writer.class, boolean.class); |
| SVGGraphics2DConstructor = classSVGGraphics2D.getConstructor(classSVGGeneratorContext, boolean.class); |
| } |
| DOMImplementation dom = (DOMImplementation) getDOMImplementationMethod.invoke(null); |
| org.w3c.dom.Document document = dom.createDocument("http://www.w3.org/2000/svg", "svg", null); |
| Object ctx = createDefaultMethod.invoke(null, document); |
| setEmbeddedFontsOnMethod.invoke(ctx, true); |
| Graphics2D svgGenerator = (Graphics2D) SVGGraphics2DConstructor.newInstance(ctx, true); |
| return svgGenerator; |
| } catch (ClassNotFoundException e) { |
| return null; |
| } catch (NoSuchMethodException e) { |
| return null; |
| } catch (IllegalAccessException e) { |
| return null; |
| } catch (InvocationTargetException e) { |
| return null; |
| } catch (InstantiationException e) { |
| return null; |
| } catch (MalformedURLException e) { |
| return null; |
| } |
| } |
| |
| /** |
| * Serializes a graphics object to a stream in SVG format. |
| * @param svgGenerator the graphics object. Only graphics objects created by the {@link #createGraphicsObject() createGraphicsObject} method are valid. |
| * @param stream the stream to which the data is written |
| * @param useCSS whether to use CSS styles in the SVG output |
| */ |
| public static void printToStream(Graphics2D svgGenerator, Writer stream, boolean useCSS) { |
| assert classSVGGraphics2D != null; |
| assert classSVGGraphics2D.isInstance(svgGenerator); |
| try { |
| streamMethod.invoke(svgGenerator, stream, useCSS); |
| } catch (IllegalAccessException e) { |
| assert false; |
| } catch (InvocationTargetException e) { |
| assert false; |
| } |
| } |
| } |