Re: Making an 'image' accessible?

["padraig o'briain" <Padraig Obriain Sun COM>]

The GModule gail implements aceesssibility support for GtkWidgets. To see how one might implement AtkText have a look at how the AtkText interface is implemented in gailentry.c and gailtextview.c for the accessible objects corresponding to GtkEntry and GtkTextView.

gail also implements GailImage to provide accessibility suport for GtkImage. To see how to use that have a look in nautilus and eel at how NautilusIconContainerAccessible is derived from the accessible type created for an EelCanvas. Start in nautilus/libnautilus-private/nautilus-icon-container.c.

Padraig

Ashutosh Sharma wrote:
> 
> Can/Should I create an accessible object for GtkImage
> (say 'GtkImageAccessible'), assuming the image is
> displayed as a GtkImage?
> When you say 'this object will need to implement the
> AtkText interface', how exactly do I do this? I've
> unable to find any good documentation on implementing
> an Atk interface. Right now, as suggested by Narayana,
> I am going through the code for
> gnome-media/gnome-cd/access/ which has AtkInterface
> implemented.
> 
> Thanks.
> 
> Regards,
> Ashutosh
> 
> ----- Original Message -----
> From: "padraig o'briain" <Padraig Obriain Sun COM>
> To: "Ashutosh Sharma" <ashusharma1980 yahoo co uk>
> Cc: <gnome-accessibility-list gnome org>
> Sent: Tuesday, February 03, 2004 6:24 PM
> Subject: Re: Making an 'image' accessible?
> 
> > It is difficult to answer in the abstract but you
> will need to create an AtkObject corresponding to some
> widget or object in your application. To get at the
> text this object will need to implement the AtkText
> interface.
> >
> > Padraig
> >
> > Ashutosh Sharma wrote:
> > >
> > > I am confused about making a 'custom-widget'
> > > accessible. Any help would be appreciated.
> > >
> > > Let's say I have an image (of a scanned page with
> > > text) and I am displaying the image in my
> > > image-viewing application that I am making. Now,
> > > assuming that I have a way of extracting the text
> from
> > > the image, how can I make it available to a screen
> > > reader? How do I expose an ATK interface that does
> > > this? Would this be a custom 'widget'?
> > >
> > > Any help is appreciated.
> > >
> > > Regards,
> > > Ashutosh
> > >
> > >
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> 
> 
> 
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