Re: Advice wrt custom pygtk widget and atk

[Li Yuan <Li Yuan Sun COM>]

Hi Matthew,

I am not familiar with Python. But for C, if you have a costom cell 
renderer, you will need to implement its accessibility peer. Its base 
class will be GailRendererCellClass, GailTextCell would be a good 
example. And you need to register your accessibility class so that GAIL 
knows which is your class's GUI peer (gailfactory.c).

Li

On 04/20/10 04:13 PM, Matthew McGowan wrote:
> hi,
>
> I am an amateur python developer who is helping out with the Ubuntu 
> Software Center project.  We have implemented some pseudo Buttons 
> within a custom GenericCellRenderer.  I would like to know (with the 
> python atk bindings) if its possible to make these buttons accessible, 
> i.e. visible to the likes of accerciser and orca?
>
> I have looked over the atk python doc's and even looked at the 
> gtk/gail sources in the hopes i could gleam the gist of the process.  
> Alas i am none the wiser.
>
> So perhaps someone knowledgeable could outline the basic steps to get 
> this working.
>
> We experimented at one point, and implemented the object and component 
> aspects of atk, though they were rough stubs, but nothing appeared in 
> accerciser.  So i wonder what are the basic steps to reate an 
> accessible custom widget?
>
> ...
>
> I.e. I guess implement the atk.Object interface and atk.Component 
> interfaces?  Do i need to atk.Register a custom atk.Object? For me 
> this is hard to understand from documentation.
>
> What else am i missing?
>
> ...
>
> Moreover, another custom widget we make use of, what we call the 
> PathBar, is implemented using an HBox and child EventBoxes, so, 
> generic gtk widgets.  when in accerciser, and you Validate the widget, 
> it comments on the fact that our widget is not actionable and lacks a 
> text interface.  Do i just need to implement these interfaces?
>
> Any advice is much appreciated.  I only really get python, but if you 
> cant be bothered explaining, but know of some good source snippets, 
> thats better than nothing. :)
>
>
> Kindest Regards,
> Matthew McGowan
>
>
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