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Posted to batik-users@xmlgraphics.apache.org by Chris Kelly <Ch...@advent-comm.co.uk> on 2001/09/04 11:13:13 UTC
JSVGCanvas - java.lang.OutOfMemoryError
Hi
I'm using the 1.3 jdk on Windows NT. I am running the application from
within JBuilder 3.5
I have slightly modified the JSVGCanvas sample code to increment a counter
in a very simple SVG
After some time (after counting to 8351 last time), I get a
java.lang.OutOfMemoryError
Here is the SVG:-
<?xml version="1.0" encoding="utf-8"?>
<!DOCTYPE svg PUBLIC "-//W3C//DTD SVG 20000303 Stylable//EN"
"http://www.w3.org/TR/2000/03/WD-SVG-20000303/DTD/svg-20000303-stylable.dtd"
>
<svg onload="" width="100%" height="100%" viewBox="0 0 300 45"
xml:space="preserve">
<text id="myTitle" x="5" y="20" style="stroke:none;
fill:#cc00ff; font-family:'Arial'; font-size:24;">Counter</text>
<text id="text" x="5" y="40" style="stroke:none;
fill:#cc00ff; font-family:'Arial'; font-size:24;">0</text>
</svg>
Here is the code:-
package batik;
import java.awt.*;
import java.awt.event.*;
import java.io.*;
import javax.swing.*;
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.SVGDocumentLoaderAdapter;
import org.apache.batik.swing.svg.SVGDocumentLoaderEvent;
import org.apache.batik.swing.svg.GVTTreeBuilderAdapter;
import org.apache.batik.swing.svg.GVTTreeBuilderEvent;
import org.w3c.dom.svg.SVGDocument;
import org.w3c.dom.Node;
public class SVGApplication
{
public static void main(String[] args)
{
JFrame f = new JFrame("Batik");
SVGApplication app = new SVGApplication(f);
f.getContentPane().add(app.createComponents());
f.addWindowListener(new WindowAdapter()
{
public void windowClosing(WindowEvent e)
{
System.exit(0);
}
});
f.setSize(400, 400);
f.setVisible(true);
}
JFrame frame;
JButton button1 = new JButton("Load...");
JButton button2 = new JButton("Animate!!!");
JLabel label = new JLabel();
JSVGCanvas svgCanvas = new JSVGCanvas();
SVGDocument tempDoc;
Node tempNode;
int counter = 0;
boolean counting = false;
public SVGApplication(JFrame f)
{
frame = f;
}
public JComponent createComponents()
{
// set doublebufferedrendering to true to avoid flicker
svgCanvas.setDoubleBufferedRendering(true);
final JPanel panel = new JPanel(new BorderLayout());
JPanel p = new JPanel(new FlowLayout(FlowLayout.LEFT));
p.add(button1);
p.add(button2);
p.add(label);
panel.add("North", p);
panel.add("Center", svgCanvas);
// Set the button1 action.
button1.addActionListener(new ActionListener()
{
public void actionPerformed(ActionEvent ae)
{
JFileChooser fc = new JFileChooser(".");
int choice = fc.showOpenDialog(panel);
if (choice == JFileChooser.APPROVE_OPTION)
{
File f = fc.getSelectedFile();
try
{
svgCanvas.setURI(f.toURL().toString());
}
catch (IOException ex)
{
ex.printStackTrace();
}
}
}
});
// Set the button2 action.
button2.addActionListener(new ActionListener()
{
public void actionPerformed(ActionEvent ae)
{
tempDoc = svgCanvas.getSVGDocument();
tempNode = tempDoc.getElementById("text").getFirstChild();
if (!counting)
{
counting = true;
count();
}
else
{
counting = false;
}
}
});
svgCanvas.addGVTTreeRendererListener(new GVTTreeRendererAdapter()
{
public void gvtRenderingCompleted(GVTTreeRendererEvent e)
{
if (counting)
{
count();
}
}
});
return panel;
}
/**
* pause for specified number of milliseconds
*/
private void pause(int milliseconds)
{
try
{
Thread.sleep((long)(milliseconds));
}
catch(InterruptedException ie)
{
System.out.println("DisplayController, sleep interrupted:" +
ie.toString());
}
}
private void count()
{
pause(500);
counter = counter + 1;
tempNode.setNodeValue(Integer.toString(counter));
svgCanvas.setSVGDocument(tempDoc);
}
}
Any ideas would be greatly appreciated
Thanks
Chris
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Re: JSVGCanvas - java.lang.OutOfMemoryError
Posted by Thierry Kormann <tk...@ilog.fr>.
On Tuesday 04 September 2001 11:13, Chris Kelly wrote:
> Hi
>
> I'm using the 1.3 jdk on Windows NT. I am running the application from
> within JBuilder 3.5
>
> I have slightly modified the JSVGCanvas sample code to increment a counter
> in a very simple SVG
>
> After some time (after counting to 8351 last time), I get a
> java.lang.OutOfMemoryError
>
We have just fixed a memory leak that might solve your problem.
If you want to check the current CVS code base, you are welcome.
Thanks for your feedback.
Thierry.
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