[fw-mvc] zend pdf - align text at right

Hi,

I'm currently giving a shot at pdf generation through Zend_Pdf, and
first of all, thanks for the job done, it's great and quite easy to
use.

I have a question though, is it possible to know the size of
text-string to be drawn (Zend_Pdf_Page::drawText())?
I need it to be able to align my text on the right (if anyone has a
better idea, do not hesitate!)

Regards,
Remy