Re: improving accessibility of 2 dimensional editing areas

[Joël Krähemann <jkraehemann gmail com>]

Hi,

Thank you for your response. The Ags*Meta widgets are really what I
want. I think the screenreader can tell you what I am going to show
you.

My idea is to implement a key stroke like Ctrl-M to show/hide these
widgets and set focus.

http://git.savannah.nongnu.org/cgit/gsequencer.git/diff/ags/X/editor/ags_notation_meta.h?h=3.1.x
http://git.savannah.nongnu.org/cgit/gsequencer.git/diff/ags/X/editor/ags_automation_meta.h?h=3.1.x
http://git.savannah.nongnu.org/cgit/gsequencer.git/diff/ags/X/editor/ags_wave_meta.h?h=3.1.x

Well about positioning, I have some tool dialogs allowing you to do so.

http://git.savannah.nongnu.org/cgit/gsequencer.git/tree/ags/X/editor/ags_position_notation_cursor_dialog.h?h=3.1.x
http://git.savannah.nongnu.org/cgit/gsequencer.git/tree/ags/X/editor/ags_position_automation_cursor_dialog.h?h=3.1.x
http://git.savannah.nongnu.org/cgit/gsequencer.git/tree/ags/X/editor/ags_position_wave_cursor_dialog.h?h=3.1.x

So everything is just fine.

best regards,
Joël

On Thu, Jan 23, 2020 at 10:05 AM apinheiro <apinheiro igalia com> wrote:
> On 22/1/20 22:14, Joël Krähemann via gnome-accessibility-list wrote:
> > Hi all,
>
> Hi,
>
>
> > What about extending Atk interfaces to help assisting you to perform
> > editing within 2 dimensional editing areas?
> >
> > I am the upstream author of:
> >
> > http://nongnu.org/gsequencer/
> >
> > I have 3 editing areas:
> >
> > http://nongnu.org/gsequencer/api/2.3.2/libgsequencer/AgsNotationEdit.html
> > http://nongnu.org/gsequencer/api/2.3.2/libgsequencer/AgsAutomationEdit.html
> > http://nongnu.org/gsequencer/api/2.3.2/libgsequencer/AgsWaveEdit.html
> >
> > They have all a x-position in common. And some sort of x position,
> > values and amplitudes.
> >
> > Well it is a bit more complicated since GSequencer allows you to do
> > multi-channel editing.
> >
> > This widget allows you to turn on/off channels:
> >
> > http://nongnu.org/gsequencer/api/2.3.2/libags-gui/AgsNotebook.html
> >
> > May be we can implement some new interfaces? Like:
> >
> > * AtkStreamPosition - giving you the x-offset
> > * AtkLayerHint - telling you what layer is on/off
> > * AtkLevel - telling you the y-offset
> > * AtkMeta - telling you summary of all
>
>
> I didn't have time to a full check of those editing areas, but just a my
> first quick though. Aren't those too many new interfaces? I mean that if
> each of those interfaces is going to provide you just one value, perhaps
> it would make more sense to re-think them on one/two interfaces instead
> of 4.
>
> For example, instead of a new interface AtkStreamPosition, why not a
> some new properties (x-offset, etc) on the existing AtkStreamableContent?
>
> Also, as AtkComponent already allows to ask for the object layer,
> perhaps extend it to ask for a list of active layers? (unless layers on
> your use case is different on what Atk already have).
>
> Also, not sure about AtkMeta. First, who would implement it? The main
> container? Also, what kind of summary it would provide? Something like
> "number of layers", "number of streams", etc? I think that it would be
> valuable somewhat more details there.
>
>
> > and extending:
> >
> > * AtkValue - to deal with multi-value input/output
>
>
> So the main container would expose a multi-value AtkValue? what would be
> the advantage of this approach over individual elements exposing their
> AtkValue?
>
>
> > AtkValue should be able to tell you what value is on what layer.
> >
> > I think AtkMeta could be powerful, just giving you some string
> > describing you all kind of settings.
> >
> > If you have any idea howto improve let me know.
> >
> > Just as writing this, I recognized that I could do a GtkTable showing
> > you some strings ...
> > This would be my AgsMeta might be ;)
> >
> >
> > best regards,
> > Joël
> > _______________________________________________
> > gnome-accessibility-list mailing list
> > gnome-accessibility-list gnome org
> > https://mail.gnome.org/mailman/listinfo/gnome-accessibility-list
>
>
> [1]
> https://developer.gnome.org/atk/stable/AtkComponent.html#atk-component-get-layer