[PATCH synaptics] conf: increase top software button area to 15%

[Peter Hutterer]

On 6/08/2014 16:35 , Eric Anholt wrote:
> Peter Hutterer <peter.hutterer at who-t.net> writes:
>
>> We had reports that the top software button area is hard to hit for those
>> using the trackpoint and clicking the buttons with their thumb.
>>
>> Analysis of event recordings (3 different people) for left, right and middle
>> clicks shows that there is a significant amount of events up to about 10mm
>> (with outliers up to 12mm) from the top of the touchpad. That maps to 15%.
>>
>> Interestingly, the middle button is not affected by this, presumably the
>> haptic feedback of the little dots sticking out from the surface make hitting
>> the button easier.
>
> I'm confused by this bit of the commit message -- aren't you also
> increasing the soft middle button rectangle size?

yeah, I am for simplicity and because the sample set is too small to be 
definitive about it anyway. I'll reword the commit message, this should 
read that for the middle button it doesn't seem *necessary* but it's 
increased anyway.

> It makes me really happy to see changes being driven by tracing of user
> behavior, though.  I wouldn't have even looked at a synaptics change if
> not for the compelling commit message :)

Only took us several years to get the tools in place to actually 
evaluate and analyse stuff like that :)

Cheers,
   Peter