Public bug reported:
I have laptops with a synaptics forcepad, and trying to use middle-
button emulation on them by hitting left & right buttons is a hit-or-
miss making it quite a frustrating experience.
Adding this from upstream fixes that:
commit 886b5a2cd8c785e48ddf5ceb4a902cd1f518d2a9
Author: Peter Hutterer
Date: Mon Apr 4 10:06:36 2016 +1000
touchpad: add a middle button software area
Middle button interaction is most commonly to paste and it is a single-event
interaction (button press). We provided middle button in software button
mode
by emulating it with a two-finger press with L+R down at the same time. This
is also what many touchpads are spectacularly bad at, it is very common to
detect the physical button down event before the second finger registers,
resulting in left or right clicks where a middle button should be triggered.
Unless the fingers are resting on the touchpad for at least one scanout, the
success rate for middle button emulation is only at 70% or so.
This patch adds a 25%-width middle button area between the left and the
right
software button, everything else stays the same. To avoid immediate
breakage,
the middle button emulation remains but may be removed in the future.
The doc is updated to only refer to the middle button area now.
https://bugs.freedesktop.org/show_bug.cgi?id=94755
** Affects: libinput (Ubuntu)
Importance: Undecided
Status: New
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https://bugs.launchpad.net/bugs/1570282
Title:
FFE: add middle button software area
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