Problems trying to add text dynamically in SVGCanvas

Maria Carolina Arce Terceros Wed, 11 Jan 2006 00:37:05 -0800

Hi!

I'm working on my Software Engineering thesis, therefore I need to be

able to manipulate svg content dynamically. So far I've been able to

add shapes to a document, but I'm having trouble adding text... I've

debugged it and it looks like the text is actually being added but it

is not shown in the SVGCanvas...

I'm pasting an example...

It would be extremely helpfull if someone could give me a hint of what

I'm doing wrong :)

Thanks for your time!

Maria Carolina Arce Terceros

[EMAIL PROTECTED]

import java.awt.*;

import javax.swing.*;

import org.apache.batik.bridge.UpdateManager;

import org.apache.batik.dom.svg.SVGDOMImplementation;

import org.apache.batik.swing.JSVGCanvas;

import org.apache.batik.swing.gvt.GVTTreeRendererAdapter;

import org.apache.batik.swing.gvt.GVTTreeRendererEvent;

import org.apache.batik.swing.svg.GVTTreeBuilderEvent;

import org.apache.batik.swing.svg.GVTTreeBuilderListener;

import org.apache.batik.swing.svg.SVGLoadEventDispatcherAdapter;

import org.apache.batik.swing.svg.SVGLoadEventDispatcherEvent;

import org.w3c.dom.Document;

import org.w3c.dom.Element;

import org.w3c.dom.Text;

import org.w3c.dom.svg.SVGDocument;

public class TextTest

{

//~ Methods ..............................................................................................

public static void main(String[] args)

{

final JSVGCanvas svgCanvas = new JSVGCanvas();

svgCanvas.setDocumentState(JSVGCanvas.ALWAYS_DYNAMIC);

final String nSvg = SVGDOMImplementation.SVG_NAMESPACE_URI;

Document doc = SVGDOMImplementation.getDOMImplementation().createDocument(nSvg, "svg", null);

svgCanvas.setDocument(doc);

JPanel panel = new JPanel();

panel.add(svgCanvas);

svgCanvas.addSVGLoadEventDispatcherListener(new SVGLoadEventDispatcherAdapter() {

public void svgLoadEventDispatchStarted(SVGLoadEventDispatcherEvent event)

{

Element root = svgCanvas.getSVGDocument().getDocumentElement();

root.setAttributeNS(nSvg, "width", "400");

root.setAttributeNS(nSvg, "height", "400");

svgCanvas.setBackground(Color.RED);

}

});

svgCanvas.addGVTTreeRendererListener(new GVTTreeRendererAdapter() {

public void gvtRenderingPrepare(GVTTreeRendererEvent e) {}

public void gvtRenderingCompleted(GVTTreeRendererEvent e)

{

UpdateManager updateManager = svgCanvas.getUpdateManager();

updateManager.getUpdateRunnableQueue().invokeLater(new Runnable() {

public void run()

{

String nSvg = SVGDOMImplementation.SVG_NAMESPACE_URI;

SVGDocument doc = svgCanvas.getSVGDocument();

Element text = doc.createElementNS(nSvg, "text");

text.setAttributeNS(nSvg, "font-size", "15");

text.setAttributeNS(nSvg, "fill", "black");

text.setAttributeNS(nSvg, "x", "200");

text.setAttributeNS(nSvg, "y", "200");

Text textNode = doc.createTextNode("hello");

text.appendChild(textNode);

// Element rect = doc.createElementNS(nSvg, "rect");

// rect.setAttributeNS(null, "x", "100");

// rect.setAttributeNS(null, "y", "100");

// rect.setAttributeNS(null, "width", "40");

// rect.setAttributeNS(null, "height", "50");

// rect.setAttributeNS(null, "style", "fill:green");

// rect.appendChild(text);

// doc.getDocumentElement().appendChild(rect);

doc.getDocumentElement().appendChild(text);

}

});

}

});

JFrame frame = new JFrame();

frame.add(panel);

frame.pack();

frame.setVisible(true);

}

Problems trying to add text dynamically in SVGCanvas

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