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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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16
tests/data/example-client.h
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@ -4035,6 +4035,10 @@ enum wl_pointer_axis {
* 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.
*/
enum wl_pointer_axis_source {
/**
@ -4049,7 +4053,16 @@ enum wl_pointer_axis_source {
* continuous coordinate space
*/
WL_POINTER_AXIS_SOURCE_CONTINUOUS = 2,
/**
* a physical wheel tilt
* @since 6
*/
WL_POINTER_AXIS_SOURCE_WHEEL_TILT = 3,
};
/**
* @ingroup iface_wl_pointer
*/
#define WL_POINTER_AXIS_SOURCE_WHEEL_TILT_SINCE_VERSION 6
#endif /* WL_POINTER_AXIS_SOURCE_ENUM */
/**
@ -4216,7 +4229,8 @@ struct wl_pointer_listener {
* is 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