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protocol: add axis_source.wheel_tilt

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Unlike a wheel rotation, a wheel tilt is a discrete-only axis. Wheel rotations
are mapped to degrees in libinput but that that does not apply to wheel tilt
axes where there is no physical equivalent.

Signed-off-by: Peter Hutterer <peter.hutterer@who-t.net>
Reviewed-by: Jonas Ådahl <jadahl@gmail.com>
Acked-by: Daniel Stone <daniels@collabora.com>
Reviewed-by: Daniel Stone <daniels@collabora.com>
Reviewed-by: Yong Bakos <ybakos@humanoriented.com>
This commit is contained in:
Peter Hutterer 2017-01-24 09:56:39 +10:00 • committed by Pekka Paalanen
parent f8ab47690c
commit 2f72d0a8a8
4 changed files with 43 additions and 4 deletions
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8
tests/data/example.xml
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@ -1986,10 +1986,15 @@
finger. One example for this source is button-based scrolling where
the vertical motion of a device is converted to scroll events while
a button is held down.
The "wheel tilt" axis source indicates that the actual device is a
wheel but the scroll event is not caused by a rotation but a
(usually sideways) tilt of the wheel.
</description>
<entry name="wheel" value="0" summary="a physical wheel rotation" />
<entry name="finger" value="1" summary="finger on a touch surface" />
<entry name="continuous" value="2" summary="continuous coordinate space"/>
<entry name="wheel_tilt" value="3" summary="a physical wheel tilt" since="6"/>
</enum>
<event name="axis_source" since="5">
@ -2004,7 +2009,8 @@
wl_pointer.axis_source.finger, a wl_pointer.axis_stop event will be
sent when the user lifts the finger off the device.
If the source is wl_pointer axis_source.wheel or
If the source is wl_pointer.axis_source.wheel,
wl_pointer.axis_source.wheel_tilt or
wl_pointer.axis_source.continuous, a wl_pointer.axis_stop event may
or may not be sent. Whether a compositor sends an axis_stop event
for these sources is hardware-specific and implementation-dependent;