Re: Disable Accessibility in a GTK component

[Peter Korn <Peter Korn Sun COM>]

Hi Elcio,

> What I am trying to do is studing the possibility of using the Read 
> Screen Technology like ORCA to make possible to visual deficient 
> people uses a program and people who don't have deficiency can use it 
> to, but without consuming CPU. I work to Bank of Brasil
> We are between using ORCA or contruct a class to use directly some TTS 
> like ESpeak or IBM TTS technology.

Since this is focused on blind users and Orca, this is probably a better 
discussion to have on the orca mailing list, which I've cc-ed.  You've 
raised a general question - is it better to have a self-voicing 
application that has complete control of the audio output, vs. a general 
purpose app that works with assistive technologies.  I think the blind 
users on the orca mailing list can better answer that philosophical 
question than I can.  But... let me point out that the self-voicing 
approach makes the most sense when you know that the only disability you 
care about is blindness with speech output.  If the user needs Braille, 
it is critical that you support assistive technologies generally.  If 
the user needs magnification, likewise.  If the user has a severe 
physical impairment, you need to support an on-screen keyboard like 
GOK.  For these reasons, my preference is always to make general purpose 
applications support the accessibility framework, to test with AT, and 
to otherwise leave the user experience decisions to the AT.

> Some of the problems we are going to have using ORCA is that I don't 
> know if is it possible to change some voice parameters like female 
> voice or mainly entonation in execution time. Is it possible ? How ? 
> We need total control of the accessibility.

If you want custom behavior in Orca with your application, you can 
achieve this by writing an Orca script for your application.  There are 
many example scripts for applications like Firefox and OpenOffice.org 
(just to name two).  There is also material on how to write scripts off 
of the Orca website, http://live.gnome.org/Orca  I believe virtually all 
of the Orca script writers subscribe to the Orca users list that I've 
cc-ed.  They will be your best resource for answering questions.

Also, I'm curious - why do you feel you need total control of the blind 
user experience (vs. giving users flexibility in how they want to 
configure their experience)?


Regards,

Peter Korn
Accessibility Architect,
Sun Microsystems, Inc.


> Regards, Elcio
>
>
>
>
>
> 	
>
> *Peter Korn <Peter Korn Sun COM>*
> Enviado Por: Peter Korn Sun COM
>
> 23/08/2007 22:33 MST
>
> 	       
>         Para:        elciof bb com br
>         cc:        gnome-accessibility-list gnome org, 
> F2794038_Elcio_Friedrich/BANCO_DO_BRASIL BANCOBRASIL COM BR
>         Assunto:        Re: Disable Accessibility in a GTK component
>
>
>
>
>
> Hi Elcio,
>
> Have a look at the at-poke application, which intentionally disables
> accessibility on itself to avoid recursion by trying to explore itself.
>
> Why are you wanting to turn accessibility support on/off?
>
>
> Regards,
>
> Peter Korn
> Accessibility Architect,
> Sun Microsystems, Inc.
> >
> > Is it possible to disable accessibility in a gtk component or a gtk
> > window ??
> >
> > I am using ORCA with a program I did using Glade in C++ language, and
> > I would like to disable accessibility in a button if a condition is
> > true. The problem is that ORCA usually reads the label of buttons
> > created with GTK.
> >
> > I tried to use atk_object_notify_state_change(atk_obj,
> > ATK_STATE_ENABLED, false) but it didn't work. I don't know if this way
> > is the correct one.
> >
> > Other question, but envolving GTK,  anyone know how to put a mask in
> > an entry field in C++ ? I didn't find anything about it.
> >
> > Regards,
> >
> > Elcio
> > ------------------------------------------------------------------------
> >
> > _______________________________________________
> > gnome-accessibility-list mailing list
> > gnome-accessibility-list gnome org
> > http://mail.gnome.org/mailman/listinfo/gnome-accessibility-list
> >