Re: [g-a-devel] AtkInterfaces for gnome-about

["Deepa Natarajan" <deepa natarajan wipro com>]

> > (1) Should I override the parent's AtkObject interface ? In
> the case of
> > GtkDrawingArea, it's GailWidget.
> >
>
> It is GailWidget because we have not yet found anything
> interesting about
> GtkDrawingArea to justify implementing a GailDrawingArea in
> the gail library.
>

Am outlining my implementation approach; would help if you could
validate the same.

Because the widget doesn't gain focus, I plan to set the atk object in
the following manner:

1) In main function, check if gail is loaded
2) If loaded, invoke gtk_widget_get_accessible, passing widget id of the
GtkDrawingArea
3) This would return me the parent (GailWidget) object - pobj
4) Set pobj's atk_object_set_name to "List of contributors' names"
5) Also set pobj's atk_object_get_n_children to ZERO so the AT knows
there's no other info to traverse down for this object.

> > (2) If not, I will have to create a new Atk object for this widget and expose the information through it.

> One could implement, say, a GailDrawingArea in gnome-about whose name is the list of contributors' names. In gnome-about, you would have
> to override the get_accessible method in the GtkWidgetClass structure for GtkDrawingArea to ensure that the correct type of object is reated > when gtk_widget_get_accessible() is called for the GtkDrawingArea

Does this mean that you would concatenate all the contributors' names
and pass it to atk_object_set_name ?

In which case, I could as well do the above (concatenation of strings)
for the first approach too, right ? But this would mean that, somehow,
the AT is informed as to what delimits each names ??

Could I do the same for the gnome logo that appears in the canvas area .
i.e. set the name and description, using atk_object_set_name /
description. In which case a screen reader or a magnifier would not be
able to get the position or co-ordinates of the image.


Thanks,
Deepa.

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