On Thu, Jun 25, 2015 at 08:06:29AM -0700, spit...@gmail.com wrote:
> From: Bill Spitzak
>
> (changes from previous version: rounds the guess and changes 0 to 1,
> removed unused variables)
>
> Instead a default resolution is set if the device does not claim one.
> The selected value is a guess t
On Thu, Jun 25, 2015 at 8:52 PM, Peter Hutterer
wrote:
> I think you're underestimating the precision of modern touchpads. The T440s
> have a resolution of 42 units/mm, the x220 from several years ago had
> somewhere around 130. The lowest value I've seen so far was 10.
>
Ok then it sounds like
On Thu, Jun 25, 2015 at 08:12:36AM -0700, Bill Spitzak wrote:
> Actually it seems incorrect to store the number of device units per mm as an
> integer, since I would guess this number is near 1. However I don't know how
> touchpads work so maybe the resolution is much much finer than I would
> gues
Actually it seems incorrect to store the number of device units per mm
as an integer, since I would guess this number is near 1. However I
don't know how touchpads work so maybe the resolution is much much finer
than I would guess?
To avoid floating point it might work to store the size of the
From: Bill Spitzak
(changes from previous version: rounds the guess and changes 0 to 1,
removed unused variables)
Instead a default resolution is set if the device does not claim one.
The selected value is a guess that the trackpad is 67 mm tall and
that the device units are square.
This estima
