[cairo] rsvg cairo and the size-22

[donn]

Hi,
I am working from xml elements, passing them out to python-rsvg and 
telling it to render. This is fine as long as I know what size that 
element should be.

The "size-22" is when I don't: I need to know the size before I can 
render the svg, but I can't calculate it until I have rendered it!

Is there some well-thumbed way to deal with this?

I am thinking of creating a very large tmp surface, rendering into it 
and then asking the context (or rsvg) for the stroke/fill size and then 
clipping that out and ... well it gets fuzzy. I have to get that cut-out 
into Clutter (python-clutter 1.0's CairoTexture actor) somehow.

(It's either that or rendering everything *twice*, which just offends my 
inner-coder :) )

Any hope?

\d