[Sugar-devel] automatic backlight control

[Kevin Gordon]

I too will test this weekend.  Silly q:  should I test both sugar and
gnome, or just sugar?

KG

On Thu, Nov 24, 2011 at 11:23 AM, Paul Fox <pgf at laptop.org> wrote:

> bert wrote:
>  >
>  > On 24.11.2011, at 16:09, Paul Fox wrote:
>  >
>  > > bert wrote:
>  > >> Today is a sunny day in cold Germany, unlike in the first half of
> the week.
>  > So
>  > >> I took the 1.75 outside.
>  > >>
>  > >> IMHO the auto-off is fine as implemented in os12. Not distracting at
> all.
>  > >> Someone suggested turning it back on quicker, I tried that (replaced
>  > >> brightness_ramp with set_brightness), but that was much less nice.
>  > >>
>  > >> As I said previously I like the new mono toggle using the brightness
> keys
>  > with
>  > >> ctrl.
>  > >>
>  > >> But I also like the switch to mono when turning the brightness down
>  > manually.
>  > >> Much more convenient (and way more discoverable) than having to
> remember the
>  > >> ctrl-modifier. So I added those two lines back just as they were
> before, and
>  > it
>  > >> works fine. I would find it a foolish consistency to drop this just
> because
>  > >> automatic switch-off doesn't do it.
>  > >
>  > > okay, sold.
>  > >
>  > > i did have a very brief chance to play with the laptop in the sun two
>  > > days ago, and after trying more varied types of content, i better
>  > > appreciate the value of mono mode.  it's sunny here today, so i hope
>  > > to get to play with it some more myself.
>  > >
>  > > i've implemented what a couple of people suggested for brightness key
>  > > behavior:
>  >
>  > (haven't seen that yet in your git repo)
>
> not pushed yet.
>
>  >
>  > >  - reducing brightness manually to level 0 remains colored (unlike
>  > >    past releases, where level 0 also implied mono).
>  > >
>  > >  - hitting "brightness down" one more time when at level 0 will
>  > >    switch to mono.  users that use auto-repeat to get there probably
>  > >    won't see a difference.
>  >
>  > Not needed, see below.
>  >
>  > >  - alt-brightness-down goes to level-0 in mono mode, as it always did.
>  > >    i think it's a coin-toss whether it should go to level-0 in mono or
>  > >    level-0 in color.  (thoughts?)
>  >
>  > Mono.
>
> good.
>
>  >
>  > >  - "brightness up" from level 0 (whether from the color or mono
>  > >    version of level 0) will always go to level 1, and restore color.
>  > >
>  > >  - sunlight-driven auto-turnoff will go all the way to 0, but won't
>  > >    invoke mono mode.
>  > >
>  > > bert, i think you approved of the idea of this scheme on irc, please
> let
>  > > me know if you still think so.
>  > >
>  > > paul
>  >
>  >
>  > I now think having two zero-brightness settings (crisp / blurred)
>  > does not make sense for general usage.  +1 to what Gary wrote in
>  > his followup.
>  >
>  > For those who want to play with that we have ctrl-brightness-down/up to
> toggle
>  > blurryness ;)
>  >
>  > So I would rather not add that extra step "below 0".
>
> okay, i'm fine with that -- i was on the fence.  but i think you and
> gary are saying two slightly different things.
>
> you're saying that the manual keypresses shouldn't have an intermediate
> "level 0 in color" step.   gary's saying that auto-turnoff should go
> to level 0 in mono.  i'm happy to agree with you.  i don't think i'm
> ready to agree with gary.
>
> reason for not agreeing with gary:  the switch from color to mono and
> back is very noticeable when you're in bright sunlight.  the
> auto-turnoff should be designed to be as transparent to the user as
> possible.  there will be times when the auto-turnoff won't do quite
> the right thing -- perhaps your hands are shading the sensor
> momentarily, or perhaps your laptop was sleeping when you came
> outside, and the auto-turnoff won't take effect until your first
> keystroke wakes it up.  in those cases i think the auto-turnoff should
> stay in color mode.
>
> paul
>
>  >
>  > - Bert -
>  >
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> =---------------------
>  paul fox, pgf at laptop.org
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