Orca, AT-SPI and the Compiz zoom project

[Peter Parente]

Hi Kristian,

Traditionally, screen reader ATs like gnopernicus originally and now
Orca and LSR drive the gnome-magnifier. The magnifier itself is just a
"dummy" component which is completely controller by the other ATs.
They tell it where to look, how much to zoom, how big a zoom region
should be on the desktop, how many zoom regions should exist, how big
the cursor should be, etc. The purpose of this design, I believe, is
so that magnification can be tied to speech and Braille output by the
screen reader.

At present, the screen readers communicate with gnome-mag through bonobo/CORBA.

http://svn.gnome.org/viewcvs/gnome-mag/trunk/idl/

I hope this helps,
Pete