[Wayland-bugs] [Bug 87402] Allow fake middle button on clickpads

[bugzilla-daemon at freedesktop.org]

https://bugs.freedesktop.org/show_bug.cgi?id=87402

--- Comment #5 from Tom Hughes <tom at compton.nu> ---
So I've been investgating a bit more to try and discover why I currently have
my laptop setup with a fake middle button (as you say, the clickpad is just
marked with one line in the middle) and I think I have figured out the
history...

My previous laptop had physical buttons and middle click was emulated when both
were pressed together, which wasn't ideal as it's a bit fiddly for something
that I do very often, but wasn't terrible.

When I replaced it the new one had a clickpad and it seems I discovered what I
have just rediscovered while trying to enable middle click emulation - the
current synaptics X driver doesn't support middle click emulation (by pressing
left and right together) for cickpads!

Having discovered however that I could define custom boundaries to create an
unmarked middle button I went with that, which is also a bit more convenient
than for a common operation like pasting.

I was unaware until just now that clicking with three fingers also did middle
mouse - that does indeed work with synaptics but it's very fiddly.

So if the new libinput driver does support middle as left+right then that's
probably not as bad as I thought it would be, though a fake middle button would
certainly give easier access to middle button functionality.

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