BatikSVG.java revision 1472:c18cbe5936b8 
1/*
2 * Copyright (c) 2008, Oracle and/or its affiliates. All rights reserved.
3 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
4 *
5 * This code is free software; you can redistribute it and/or modify it
6 * under the terms of the GNU General Public License version 2 only, as
7 * published by the Free Software Foundation.
8 *
9 * This code is distributed in the hope that it will be useful, but WITHOUT
10 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
11 * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
12 * version 2 for more details (a copy is included in the LICENSE file that
13 * accompanied this code).
14 *
15 * You should have received a copy of the GNU General Public License version
16 * 2 along with this work; if not, write to the Free Software Foundation,
17 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
18 *
19 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
20 * or visit www.oracle.com if you need additional information or have any
21 * questions.
22 *
23 */
24package com.sun.hotspot.igv.svg;
25
26import java.awt.Graphics2D;
27import java.io.Writer;
28import java.lang.reflect.Constructor;
29import java.lang.reflect.InvocationTargetException;
30import java.lang.reflect.Method;
31import org.w3c.dom.DOMImplementation;
32
33/**
34 *
35 * @author Thomas Wuerthinger
36 */
37public class BatikSVG {
38
39    private static Constructor SVGGraphics2DConstructor;
40    private static Method Method_stream;
41    private static Method Method_createDefault;
42    private static Method Method_getDOMImplementation;
43    private static Method Method_setEmbeddedFontsOn;
44
45    public static Graphics2D createGraphicsObject() {
46        try {
47            if (SVGGraphics2DConstructor == null) {
48                ClassLoader cl = BatikSVG.class.getClassLoader();
49                Class Class_GenericDOMImplementation = cl.loadClass("org.apache.batik.dom.GenericDOMImplementation");
50                Class Class_SVGGeneratorContext = cl.loadClass("org.apache.batik.svggen.SVGGeneratorContext");
51                Class Class_SVGGraphics2D = cl.loadClass("org.apache.batik.svggen.SVGGraphics2D");
52                Method_getDOMImplementation = Class_GenericDOMImplementation.getDeclaredMethod("getDOMImplementation", new Class[0]);
53                Method_createDefault = Class_SVGGeneratorContext.getDeclaredMethod("createDefault", new Class[]{org.w3c.dom.Document.class});
54                Method_setEmbeddedFontsOn = Class_SVGGeneratorContext.getDeclaredMethod("setEmbeddedFontsOn", new Class[]{boolean.class});
55                Method_stream = Class_SVGGraphics2D.getDeclaredMethod("stream", Writer.class, boolean.class);
56                SVGGraphics2DConstructor = Class_SVGGraphics2D.getConstructor(Class_SVGGeneratorContext, boolean.class);
57            }
58            DOMImplementation dom = (DOMImplementation) Method_getDOMImplementation.invoke(null);
59            org.w3c.dom.Document document = dom.createDocument("http://www.w3.org/2000/svg", "svg", null);
60            Object ctx = Method_createDefault.invoke(null, document);
61            Method_setEmbeddedFontsOn.invoke(ctx, true);
62            Graphics2D svgGenerator = (Graphics2D) SVGGraphics2DConstructor.newInstance(ctx, true);
63            return svgGenerator;
64        } catch (ClassNotFoundException e) {
65            return null;
66        } catch (NoSuchMethodException e) {
67            return null;
68        } catch (IllegalAccessException e) {
69            return null;
70        } catch (InvocationTargetException e) {
71            return null;
72        } catch (InstantiationException e) {
73            return null;
74        }
75    }
76
77    public static void printToStream(Graphics2D svgGenerator, Writer stream, boolean useCSS) {
78        try {
79            Method_stream.invoke(svgGenerator, stream, useCSS);
80        } catch (IllegalAccessException e) {
81            assert false;
82        } catch (InvocationTargetException e) {
83            assert false;
84        }
85    }
86}
87