Phillip,
In the code I sent, please set useCSS to false to get it to work.
I accidently left it set to true.
V.
Vincent Hardy wrote:
>
> Phillip,
>
> I have attached a modified version of your code that does not use
> a DocumentFragment and does not use CSS styling. It should do what you
> want.
>
> Your example actually showed two issues in our DOM implementations and
> we are going to fix them shortly. It seems that replacing an element
> with a DocumentFragment gets us in an infinite loop and that we got
> a regression on removeAttribute (used when you do SVG streaming with
> useCss=true).
>
> Thanks,
> Vincent.
>
> Phillip Larsen wrote:
> >
> > Hi, I am creating a web charting application using Batik.
> >
> > I create a Document by first creating a DOMImplementation and
> > then using this DOMImplementation to create the Document.
> >
> > The Document is used to create a SVGGeneratorContext object and then
> > the SVGGeneratorContext is used to create the SVGGraphics2D object.
> >
> > I then use this SVGGraphics2D object as the graphical context in the
> > charting component. I am assuming that the Document I created is used
> > to hold the DOM tree created when performing Java2D commands with the
> > SVGGraphics2D object as graphical context.
> >
> > The charting component contains Java2D commands to create a simple line
> > chart where the lines for each series of data are connected with circles,
> > i.e. each value in the line chart is marked by a circle.
> >
> > I want to be able to perform drill down on this chart by clicking on the
> > circles to retrieve more information. Thus I need to be able to make the
> > circles in the chart clickable. To do so I think I need to go through
> > the DOM tree for the chart and replace each circle element with an X-link
> > element where the cirle is a child element of the X-link element.
> >
> > Here is the code I am using to perform what I have described above :
> >
> > public static void writeChartAsSVG(OutputStream out, JFreeChart chart, int width,
>int height) throws
> > IOException
> > {
> > SVGGeneratorContext ctx;
> > SVGGraphics2D svgGenerator;
> > XmlWriter xmlwriter;
> > DOMImplementation domImpl;
> > Document document;
> > DocumentFragment docFrag;
> > NodeList circleNodes;
> > Node dummyNode;
> > Node parentNode;
> > Element linkElement;
> > Element root;
> > Element circle;
> > int numCircleNodes;
> >
> > // Get a DOMImplementation
> > domImpl = GenericDOMImplementation.getDOMImplementation();
> >
> > // Create an instance of org.w3c.dom.Document
> > document = domImpl.createDocument(null, "svg", null);
> >
> > ctx = SVGGeneratorContext.createDefault(document);
> > svgGenerator = new SVGGraphics2D(ctx,false);
> >
> > chart.draw(svgGenerator, new Rectangle2D.Double(0, 0, width, height));
> >
> > docFrag = document.createDocumentFragment();
> > linkElement = (Element)
>docFrag.appendChild(document.createElement(SVGSyntax.SVG_A_TAG));
> >
>linkElement.setAttributeNS(SVGSyntax.SVG_NAMESPACE_URI,SVGSyntax.ATTR_XLINK_HREF,"http://www.vg.no";);
> >
> > root = svgGenerator.getRoot();
> >
> > circle =
>document.createElementNS(SVGSyntax.SVG_NAMESPACE_URI,SVGSyntax.SVG_RECT_TAG);
> >
>circle.setAttributeNS(SVGSyntax.SVG_NAMESPACE_URI,SVGSyntax.SVG_FILL_ATTRIBUTE,"red");
> > root.appendChild(circle);
> >
> > circleNodes = root.getElementsByTagName(SVGSyntax.SVG_CIRCLE_TAG);
> > numCircleNodes = circleNodes.getLength();
> > for(int nodeCounter=0;nodeCounter<numCircleNodes;nodeCounter++)
> > {
> > dummyNode = circleNodes.item(nodeCounter).cloneNode(true);
> > linkElement.appendChild(dummyNode);
> >
> > parentNode = circleNodes.item(nodeCounter).getParentNode();
> > parentNode.replaceChild(docFrag,circleNodes.item(nodeCounter));
> >
> > docFrag = document.createDocumentFragment();
> > linkElement = (Element)
>docFrag.appendChild(document.createElement(SVGSyntax.SVG_A_TAG));
> >
>linkElement.setAttributeNS(SVGSyntax.SVG_NAMESPACE_URI,SVGSyntax.ATTR_XLINK_HREF,"http://www.vg.no";);
> > }
> >
> > // Finally, stream out SVG to the standard output using UTF-8
> > // character to byte encoding
> > boolean useCSS = true;
> > Writer svgOutputWriter = new OutputStreamWriter(out, "UTF-8");
> > svgGenerator.stream(root,svgOutputWriter,useCSS);
> > }
> >
> > When I try to stream out using the svgGenerator.stream method
> > all I receive is the SVG document without any changes made.
> > It seems as though I am not able to access the DOM tree and
> > performs the replacements. Help on how to access the DOM tree created
> > by the SVGGenerator and manipulate the nodes of the tree
> > before streaming them to the output would be greatly appreciated.
> >
> > Regards
> > Phillip Larsen
> >
> > ---------------------------------------------------------------------
> > To unsubscribe, e-mail: [EMAIL PROTECTED]
> > For additional commands, e-mail: [EMAIL PROTECTED]
>
> ------------------------------------------------------------------------
> /*****************************************************************************
> * Copyright (C) The Apache Software Foundation. All rights reserved. *
> * ------------------------------------------------------------------------- *
> * This software is published under the terms of the Apache Software License *
> * version 1.1, a copy of which has been included with this distribution in *
> * the LICENSE file. *
> *****************************************************************************/
>
> package org.apache.batik.svggen;
>
> import java.awt.*;
> import java.awt.geom.*;
>
> import java.io.*;
>
> import org.apache.batik.util.SVGConstants;
>
> import org.apache.batik.svggen.*;
> import org.apache.batik.dom.*;
> import org.apache.batik.dom.svg.*;
> import org.w3c.dom.*;
>
> public class DOMManipulation {
> public static class CirclePainter implements Painter {
> public void paint(Graphics2D g){
> g.translate(30,30);
> g.setPaint(Color.blue);
> g.draw(new Ellipse2D.Float(0,0,60,60));
> g.setPaint(Color.red);
> g.fill(new Ellipse2D.Float(100,100,60,60));
> }
> }
>
> static Painter painter = new CirclePainter();
>
> public static void writeAsSVG() throws
> IOException {
> SVGGeneratorContext ctx;
> SVGGraphics2D svgGenerator;
> XmlWriter xmlwriter;
> DOMImplementation domImpl;
> Document document;
> DocumentFragment docFrag;
> NodeList circleNodes;
> Node dummyNode;
> Node parentNode;
> Element linkElement;
> Element root;
> Element circle;
> int numCircleNodes;
>
> // Get a DOMImplementation
> domImpl = SVGDOMImplementation.getDOMImplementation();
>
> // Create an instance of org.w3c.dom.Document
> document = domImpl.createDocument(null, "svg", null);
>
> ctx = SVGGeneratorContext.createDefault(document);
> svgGenerator = new SVGGraphics2D(ctx,false);
> svgGenerator.setSVGCanvasSize(new Dimension(400,400));
>
> painter.paint(svgGenerator);
>
> // docFrag = document.createDocumentFragment();
> linkElement = document.createElement(SVGSyntax.SVG_A_TAG);
>
>linkElement.setAttributeNS(SVGSyntax.SVG_NAMESPACE_URI,SVGSyntax.ATTR_XLINK_HREF,"http://www.vg.no";);
>
> root = svgGenerator.getRoot();
>
> circle =
>document.createElementNS(SVGSyntax.SVG_NAMESPACE_URI,SVGSyntax.SVG_RECT_TAG);
>
>circle.setAttributeNS(SVGSyntax.SVG_NAMESPACE_URI,SVGSyntax.SVG_FILL_ATTRIBUTE,"red");
> root.appendChild(circle);
>
>
> circleNodes = root.getElementsByTagName(SVGSyntax.SVG_CIRCLE_TAG);
> numCircleNodes = circleNodes.getLength();
> for(int nodeCounter=0;nodeCounter<numCircleNodes;nodeCounter++) {
> dummyNode = circleNodes.item(nodeCounter).cloneNode(true);
> linkElement.appendChild(dummyNode);
>
> parentNode = circleNodes.item(nodeCounter).getParentNode();
> parentNode.replaceChild(linkElement,circleNodes.item(nodeCounter));
>
> docFrag = document.createDocumentFragment();
> linkElement = document.createElement(SVGSyntax.SVG_A_TAG);
>
>linkElement.setAttributeNS(SVGSyntax.SVG_NAMESPACE_URI,SVGSyntax.ATTR_XLINK_HREF,"http://www.vg.no";);
> }
>
> // Finally, stream out SVG to the standard output using UTF-8
> // character to byte encoding
> boolean useCSS = true;
> Writer svgOutputWriter = new OutputStreamWriter(System.out, "UTF-8");
> svgGenerator.stream(root,svgOutputWriter,useCSS);
> svgOutputWriter.flush();
> }
>
> public static void main(String args[]) throws Exception {
> writeAsSVG();
> System.exit(0);
> }
> }
>
> ------------------------------------------------------------------------
> ---------------------------------------------------------------------
> To unsubscribe, e-mail: [EMAIL PROTECTED]
> For additional commands, e-mail: [EMAIL PROTECTED]
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