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The DPI for three logitech models, the M185, M510, and M705, appear to
have always been different here than what logitech's given specs say.
With my M510, this results in jumpy behavior when transitioning from
fast motion to slow motion, making clicking specific buttons or
highlighting specific text *very* frustrating.
This patch changes those 3 mice to the published resolution, which
resolves the problem with my M510. I have chosen to fix those 3 simply
because they were already grouped together, and all incorrect as
compared to logitech's web site, and as such I have not tried other mice
or investigated if there are other non-matching values in the database
as well.
Signed-off-by: Peter Jones <pjones@redhat.com>
Note that this will only work with the new "hid-retrode" driver in the
upcoming 4.12 kernel as otherwise the mouse events and the 4 joypad
ports are bundled into a single event node.
Plenty of single scroll-wheel mice have the ability to tilt the wheel to
generate horizontal wheel events. They use the same evdev axis as a real
horizontal wheel (REL_HWHEEL) and are indistinguishable to userspace from the
real thing. libinput promises physical degrees for wheel events but that's not
accurate for those tilting wheels, hence mark them as tilting wheels so we can
treat them like the special snowflakes they think they are.
MOUSE_WHEEL_CLICK_ANGLE has been an integer, and at least libinput (probably
the only user) parses it as strict integer. For backwards compatibility, we
cannot change it to a decimal number now.
Add a new property to list the number of clicks for a full 360 degree
rotation, to be specified in addition to the old click angle property. Clients
can prefer the new one where available and calculate the decimal value to
whatever precision they want.
The Logitech MX Master has a horizontal scroll wheel with a different click
angle than the vertical one. Add a new property for this case, we can't add
values to the normal one without risking upsetting existing parsers.
Fixes#3947
Whether a device is a trackball or not is a physical property so we should
store this globally, in one place. The new property must be set in addition to
ID_INPUT_MOUSE, otherwise existing clients won't detect the device.
No actual code changes required, the default match rule is simply checking for
"Trackball" in the name (in a few versions), other entries need to be added
manually.
