[Inkscape-devel] How can I get a text bounding box in a python script?

Hello,

I try to write a python script that help drawing diagrams (i.e. syntax diagrams). A node in this typ of diagram, is a rectangle with rounded edges and a centered text caption in it. In the script, I need the bounding box of the text, for the calculation of the correct node rectangle size, to hold the whole text in it. But how can I get the bounding box? Is there somebody that can point me to a solution?

Best regards, Bernd