diff options
| author | Peter Hutterer <peter.hutterer@who-t.net> | 2015-01-09 09:51:40 +1000 |
|---|---|---|
| committer | Peter Hutterer <peter.hutterer@who-t.net> | 2015-01-15 13:29:15 +1000 |
| commit | 011c703495fb564a49dea44b424445241cd58634 (patch) | |
| tree | 8d59e8ae27dda2ab295c0c388baa564270934809 | |
| parent | 6dcfca59fc564449e44543c5e9593eaeaf83356a (diff) | |
hwdb: add MOUSE_WHEEL_CLICK_ANGLE as property
Most mice have a wheel click angle of 15 degrees, i.e. 24 clicks per full
wheel rotation. Some mice, like the Logitech M325 have a larger angle. To
allow userspace to make use of that knowledge, add a property to the hwdb.
This allows for better predictive scrolling. e.g. a mouse that has a smaller
click angle will scroll faster, with this value you can accommodate this
where needed. Likewise, using "half turn of the wheel" or "full turn of the
wheel" as a UI element becomes possible.
This addition is mainly driven by libinput 0.8, having the angle enables
libinput to provide an API that distinguishes between a physical distance
(like touchpad scrolling does) and discrete steps (wheel clicks).
Callers can choose what they prefer based on the device.
| -rw-r--r-- | hwdb/70-mouse.hwdb | 44 |
1 files changed, 31 insertions, 13 deletions
diff --git a/hwdb/70-mouse.hwdb b/hwdb/70-mouse.hwdb index a7e9eb2ce8..970d5b596c 100644 --- a/hwdb/70-mouse.hwdb +++ b/hwdb/70-mouse.hwdb @@ -28,6 +28,29 @@ # mouse:usb:v17efp6019:* # mouse:*:name:Lenovo Optical USB Mouse: # +# To add local entries, create a new file +# /etc/udev/hwdb.d/71-mouse-local.hwdb +# and add your rules there. To load the new rules execute (as root): +# udevadm hwdb --update +# udevadm trigger /dev/input/eventXX +# where /dev/input/eventXX is the mouse in question. If in +# doubt, simply use /dev/input/event* to reload all input rules. +# +# If your changes are generally applicable, open a bug report on +# http://bugs.freedesktop.org/enter_bug.cgi?product=systemd +# and include your new rules, a description of the device, and the +# output of +# udevadm info /dev/input/eventXX +# (or /dev/input/event*). +# +# Allowed properties are: +# MOUSE_DPI +# MOUSE_WHEEL_CLICK_ANGLE +# +######################################### +# MOUSE_DPI # +######################################### +# # DPI settings are specified as # MOUSE_DPI=<dpi>[@<frequency>] # @@ -64,20 +87,15 @@ # third-party software) must not be entered into this file, use a local # hwdb instead. # -# To add local entries, create a new file -# /etc/udev/hwdb.d/71-mouse-local.hwdb -# and add your rules there. To load the new rules execute (as root): -# udevadm hwdb --update -# udevadm trigger /dev/input/eventXX -# where /dev/input/eventXX is the mouse in question. If in -# doubt, simply use /dev/input/event* to reload all input rules. +######################################### +# MOUSE_WHEEL_CLICK_ANGLE # +######################################### +# +# The angle in degrees per mouse wheel 'click', specified as +# MOUSE_WHEEL_CLICK_ANGLE=<degrees> +# +# Most mice have a 15 degree click stop (24 clicks per full rotation). # -# If your changes are generally applicable, open a bug report on -# http://bugs.freedesktop.org/enter_bug.cgi?product=systemd -# and include your new rules, a description of the device, and the -# output of -# udevadm info /dev/input/eventXX -# (or /dev/input/event*). # # Sort by by brand, type (usb, bluetooth), DPI, frequency. |