Help a Batik Newbie

[Andrew Patterson <an...@blackecho.ca>]

Hi!

I'm starting working on a Batik application and I have a few questions 
I'm hoping someone can answer (or at least point me in the right
direction so I find my own).

I'm trying to write an app that loads an existing SVG, adds to it, and
then saves it out. So far I've taken and modified the JSVGCanvas example
from the Batik homepage: I have a swing app that has a button for 
loading an SVG (it uses the demo code for all this). I added a save
button as well, thinking that it would be a good idea to first get that
figured out. After trying a couple of things (like trying to pass
svgCanvas.getSVGDocument() to an SVGGraphics2D object and stream that
out -- no go, I get a blank SVG), I happened across an example in the
mailing list archives using org.apache.batik.dom.util.DOMUtilities'
writeDocument() method. While this does create a valid SVG document
based off the loaded one, it saves it out in an odd manner: no end of
lines! The result is that not even the Batik loader can read it back
in, even if the SVG renderer in my browser (Adobe SVG Viewer) can. So
my first question is: how can I save out the contents of the 
JSVGCanvas is such a way that it's readable?

Now, as I said, I'm trying to write an app that reads in an SVG,
*modifies* it (read: adds to it) and saves it out. So using the
DOMUtilities may not be the way to go. The reason I tried the
SVGGraphics2D manner first was because if that had worked, I thought
I could use the SVGGraphics2D methods to paint on my new SVG objects,
stream it out and be happy.

Now complicate this by adding in that I need to be able to add some
custom object attributes to my added SVG objects. Given that I'm not
even sure if I should be using SVGGraphics2D, assuming I *can*. I
may need to be manipulating the DOM tree directly, though I'm hoping
there's an easier way to do this, hopefully by something along the
lines of the SVGGeneratorContext example from the site (that used
the setAttributeNS() method).

At any rate, I've been trying various methods without too much
success so far, so I'm hoping someone out there on this list will
take pity on me and lend me a hand :)

Thanks in advance!

Wood Shavings!
  - Andrew

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