Re: [orca-list] Geany, SciTE and other Scintilla based applications

[Mike Gorse <mgorse alum wpi edu>]

Hi Mike,

> Looking at the Scintilla source and some of the gtk stuff it looks like
> it's a matter of sub-classing the scintilla class, or making the
> scintilla class itself a sub-class of some atk object.

Not exactly. Atk objects are typically separate objects from the widgets 
backing them. If you're coding for gtk+ 3.8+, then you'd want to subclass 
GtkContainerAccessible and associate your new class with scintilla by 
adding a call to gtk_widget_class_set_accessible_type into 
scintilla_class_init(). To support older versions of gtk, it's a bit more 
complicated.

> And then doing something positive with the different signals which
> scintilla emits to interface to atk.

One of the things your AtkObject may need to do would be to emit signals. 
It may be helpful to look at, say, gtkwidgetaccessible.c in gtk's sources 
to get an idea of what it does.

> There seems to be a lot of talk now about vala but I don't know if
> that's at all relevant.  I suspect it will just hide some of the
> lower-level gtk stuff from view.

Scintilla doesn't use vala for anything right now, so imo it would be more 
trouble than it would be worth to try to use it.

Hth,
-Mike