On Thu, Mar 22, 2012 at 7:19 PM, Andreas Volz <li...@brachttal.net> wrote:
> Am Thu, 22 Mar 2012 18:30:57 -0300 schrieb Gustavo Sverzut Barbieri:
>
>> On Thu, Mar 22, 2012 at 6:15 PM, Andreas Volz <li...@brachttal.net>
>> wrote:
>> > Am Thu, 22 Mar 2012 15:09:05 +0900 schrieb Carsten Haitzler (The
>> > Rasterman):
>> >
>> >> On Wed, 21 Mar 2012 22:30:27 +0100 Andreas Volz
>> >> <li...@brachttal.net> said:
>> >>
>> >> rotary.. what?
>> >
>> > Hmm, how should I explain it?
>> >
>> > Maybe some pictures tell more then words:
>> >
>> > http://www.vag-tec.com/public/images/pictures/2G-audi-bluetooth-large.jpg
>> > http://www.vwcruise.com/resources/mmi%2B3g%2Bphone%2Bsearch.jpg
>> >
>> > I need a widget that is able to display numbers and chars like on
>> > this picture as chooser. For sure it should be flexible for multi
>> > language input what doesn't make it easier.
>>
>> Oh really?
>> Was that a designer requirement? Can you fire the designer? :-)
>>
>> Man, this is awful... wouldn't use this approach for any user
>> interface... even more for a car (those were pictures from cars,
>> right?)
>
> Yes it's for a car software, but it's my own prototyping design. (For
> sure not the one in the image, that's not mine only similar concept!)
>
> So I'm free to fire myself or to change it if you've some proposal for
> a better input design for car usage than hardware rotary and graphic
> visualization. I couldn't imagine (except speak recognition for
> sure!) one, but I'm open...

There are lots of techniques out there to solve input problems. The
less controls you have, the more specific you have to be in your
software to help user.

For example, if you have knowledge to avoid user entering details,
then better. That involves thinking case-by-case. Providing choices is
always better than letters. Applying dictionaries, rank options
(initially per language, later by user common choices)...

Last but not least, consider linear input instead of circular for
on-screen design. The circular was a physical limitation.  You do not
have that anymore, no need to replicate that limitation physically.
People often do some things like:

<-[opt1]-[opt2]-[opt3]->

with every option readable but opt2 having a clear highlight. You can
fit more than 3 options if screen size allows.

If you follow that we have a widget called "diskselector", it's ugly
in the default theme,but you can work around that with some designer
:-)

-- 
Gustavo Sverzut Barbieri
http://profusion.mobi embedded systems
--------------------------------------
MSN: barbi...@gmail.com
Skype: gsbarbieri
Mobile: +55 (19) 9225-2202

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