X access was Re: Debian upgrade
Chris Brannon
cmbrannon79 at gmail.com
Tue Jan 19 07:10:22 EST 2010
> I was hoping the guys at X.org would take an idea from
> speech-dispatcher and crack open another channel for audible screen
> output to a synthesizer/screen reader, bypassing the need to decypher
> Gnome, KDE, or whatever other desktop manager was in use.
I really like that idea, but I don't believe it is very workable.
Here is the reason. As always, someone with more knowledge is welcome
to correct me.
The X-window system only offers low-level abstractions. It concerns
itself with the rendering of bitmapped images on graphical devices.
That information isn't very useful when rendering objects via speech or
braille. Suppose that a program wants to present a dialog box to the user.
At the X level, that dialog box isn't a dialog box. Instead, it is a
sequence of operations for controlling the display.
Could you appreciate a painting if I gave you a pixel-by-pixel description
of it? I think not.
Desktop environments like Gnome give us a higher level of abstraction, and
Orca doesn't have to deal with those raw X events.
-- Chris
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