[Sugar-devel] Question about slider key codes

Gonzalo Odiard godiard at gmail.com
Fri Jul 2 23:36:32 EDT 2010


Thanks James for the tests!
Anybody knows where is the definition of the keyboard to enable the use of
Fn + slider keys?

Gonzalo


On Fri, Jul 2, 2010 at 2:48 AM, James Cameron <quozl at laptop.org> wrote:

> G'day,
>
> That's a good question, I confirm your observations, and I agree that it
> will be something between the keyboard and the kernel if you want fn to
> work.
>
> I've tested just now, with os205 on XO-1.5.
>
> The slider keys individually provide Pygame key events for key down and
> key up.
>
> Pressing slider key 1 and 4 at the same time results in four events; two
> for each key.  This is expected.
>
> Pressing any combination of a slider key and the immediately adjacent
> slider key generates only two events for one key.  This is odd.
>
> There is an area between key 1 and key 2 where you can press down with
> normal force and no events are generated.
>
> Also, pressing fn with any slider key gives no event at all.  For
> Pygame.
>
> Also, in text console, running "showkey" shows events for slider keys,
> but no events for fn key.  Slider key events stop if fn is pressed.
>
> So I guess that it isn't possible to capture events in the way Walter
> suggested.
>
> This is also verified using "test /keyboard" at the ok prompt.  fn works
> fine, but repeated presses on the slider at various points shows the
> isolation behaviour; you can't press two at once easily.  If you press
> very hard, you can get two at once.
>
> Placing an XO-1 C2 on scales, it takes 75g of downward pressure to
> activate single slider keys, and 850g to 1.3kg of downward pressure to
> activate two slider keys at once.  This is an adult smallest finger.
>
> I don't think pressing two keys with one finger is practical.
>
> --
> James Cameron
> http://quozl.linux.org.au/
>



-- 
Gonzalo Odiard
Responsable de Desarrollo
Sistemas Australes
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