Coordinate information for GnomeCanvasRichText

[Marc Mulcahy <marc mulcahy sun com>]

Hi,

I've written initial accessibility support for libgnomecanvas, but the 
implementation of the text interface is broken since there appears to be no 
way to get the bounding box information for characters in 
GnomeCanvasRichText and GnomeCanvasText widgets.  Any ideas how to do this?

Thanks,

Marc