[Wayland-bugs] [Bug 103476] RFE: libinput: Add support for Trust TB-4200 Wireless Scroll Tablet (Aiptek based)

[bugzilla-daemon at freedesktop.org]

https://bugs.freedesktop.org/show_bug.cgi?id=103476

--- Comment #13 from Peter Hutterer <peter.hutterer at who-t.net> ---
(In reply to Martin Kolman from comment #12)
> # (Aiptek based ?)
> evdev:name:Aiptek
>  EVDEV_ABS_00=::26
>  EVDEV_ABS_01=::15
> 
> This seems to work! :) 

easiest to verify would be to run evemu-describe and check the Resolution
value for ABS_X and ABS_Y. If it applied correctly, those should be 26 and
15, respectively.

> I've tried tracing a 6.5 cm x 6.5 cm square in Krita and it comes out
> slightly wider than it is high. The number seem to have effect as when I
> swapped them (15 first, 26 second) the rectangle was even wider.

Could be because we had to round down for 26 but up for 15 though the effect
should be minimal. And of course, if you swap the resolutions around the
result is going to be some form of garbage. The device sends the same data, but
when you swap it you're saying "15 device units along the x are 1mm" which is
obviously incorrect and stretches things.

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