Re: Pictogram specification

On 31/12/12 15:08, Markus Dolze wrote:
> Hello LCDproc Developers,
>
> during the past months Stefan Herdler, Wolfgang Hauck, and myself 
> discussed how to implement pictograms in LCDproc.
>
> One result of this discussion if the pictogram specification which - 
> still incomplete - is available at [1] and in the CVS tree [2]. 
> Examples of pictograms on displays we already have drivers for can be 
> viewed at [3].
>
> [1] http://lcdproc.sourceforge.net/docs/pictogram-spec.html
> [2] 
> http://lcdproc.cvs.sourceforge.net/viewvc/lcdproc/lcdproc/docs/pictogram-spec.rst?view=log 
>
> [3] http://mmdolze.users.sourceforge.net/lcdproc-pictograms.html
>
> We appreciate any comments from the community.
>
> Regards,
> Markus
>
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For boolean-type pictograms it might be useful to support the same  
values as the backlight:

backlight { on | off | toggle | blink | flash }

Numeric-type pictograms typically have a small number of steps between 
off and maximum, a value 0-1000 is consistent with other interfaces but 
users should be able to expect drivers to implement a common mapping to 
the number of steps to display. Maybe the API should recomend the 
mapping E.g.

display_value = (value * MAX_STEPS + 500 / MAX_STEPS) / 1000

Martin