Mercurial > hg > truffle
view visualizer/BatikSVGProxy/src/com/sun/hotspot/igv/svg/BatikSVG.java @ 8270:1112adb28f82
Merge.
author | Thomas Wuerthinger <thomas.wuerthinger@oracle.com> |
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date | Tue, 12 Mar 2013 11:04:00 +0100 |
parents | 015fb895586b |
children |
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/* * Copyright (c) 2008, 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.lang.reflect.Constructor; import java.lang.reflect.InvocationTargetException; import java.lang.reflect.Method; 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) { ClassLoader cl = BatikSVG.class.getClassLoader(); 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; } } /** * 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; } } }