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authorPeter Hutterer <peter.hutterer@who-t.net>2015-01-09 09:51:40 +1000
committerPeter Hutterer <peter.hutterer@who-t.net>2015-01-15 13:29:15 +1000
commit011c703495fb564a49dea44b424445241cd58634 (patch)
tree8d59e8ae27dda2ab295c0c388baa564270934809
parent6dcfca59fc564449e44543c5e9593eaeaf83356a (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.hwdb44
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.