[PATCH libinput] tablet: handle custom proximity handling

[Bill Spitzak]

On Wed, Dec 2, 2015 at 3:57 PM, Peter Hutterer <peter.hutterer at who-t.net>
wrote:

> For the puck/lens cursor tool we need to artificially reduce proximity
> detection. These tools are usually used in a relative mode (i.e. like a
> mouse)
> and thus require lifting and resetting the tool multiple times to move
> across
> the screen. The tablets' distance detection goes too far, requiring the
> user
> to lift the device several cm on every move. This is uncomfortable.
>
> Introduce an artificial distance threshold for the devices with the default
> value taken from the X.Org wacom driver. If a tool is in proximity but
> outside
> of this range, fake proximity events accordingly.
>
>
You will want something like this for pens and all other tools, as it is
possible to use them in a relative mode (very common if the tablet is
smaller than the screen). I think rather than typing this to the type of
tool, you need to tie it to whether relative motion is being used or not.
Not sure where in libinput or wayland that would be, though.
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