[Wayland-bugs] [Bug 91589] Please provide ability to disable horizontal scroll

[bugzilla-daemon at freedesktop.org]

https://bugs.freedesktop.org/show_bug.cgi?id=91589

--- Comment #6 from Mantas Mikulėnas <grawity at gmail.com> ---
(In reply to Daniel Stone from comment #5)
> Synaptics had 'lock' functionality, where as soon as you'd started scrolling
> in one direction, you required a much higher relative threshold to start
> scrolling in the other direction. That would seem to be a lot more useful
> than having people just smash horizontal scroll off entirely.

Heh, as always, some other users (e.g. me) would consider this 'locking' to be
one of the most annoying misfeatures in the Windows touchpad drivers... I like
free scrolling in all directions, exactly how libinput already implements it.
(Cue xkcd 1172.)

But on the other hand, "unintended scrolling in horizontal direction" is just
half the story – some toolkits are even worse.

Several programs – such as VirtualBox, rdesktop, xFreeRDP, some (not all) Java
toolkits – outright misinterpret the horizontal-scroll events as if the
*back/forward navigation buttons* were clicked (there used to be mice with such
buttons), or as if PageUp/PageDown were pressed, or something equally
annoying...

For example, https://www.virtualbox.org/ticket/700 or
https://www.virtualbox.org/ticket/10838 or
https://github.com/FreeRDP/FreeRDP/issues/2302 – some of those bug reports have
remained unfixed for almost a decade.

So I agree that either disabling or locking (as long as it's /optional/) can be
useful as a workaround to such bugs... as much as I hate it, I've often had to
disable horizontal scrolling to avoid making FreeRDP unusable.

So thanks Peter for implementing this option.

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