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doc: document that we're ignoring position-less clicks

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This can happen a lot easier on the new Lenovo series, so document that this
is intentional behavior.

Signed-off-by: Peter Hutterer <peter.hutterer@who-t.net>
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Peter Hutterer 2015-02-06 14:32:05 +10:00
parent e3a43902f9
commit eeac661d93
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doc/clickpad-softbuttons.dox
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@ -54,6 +54,13 @@ The movement of a finger can alter the button area behavior:
- once a finger has moved out of the button area, it cannot move back in and
trigger a right or middle button event
On some touchpads, notably the 2015 Lenovo X1 Carbon 3rd series, the very
bottom end of the touchpad is outside of the sensor range but it is possible
to trigger a physical click there. To libinput, the click merely shows up as
a left button click without any positional finger data and it is
impossible to determine whether it is a left or a right click. libinput
ignores such button clicks, this behavior is intentional.
@section clickfinger Clickfinger behavior
This is the default behavior on Apple touchpads.