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| author | José Expósito <jose.exposito89@gmail.com> | 2022-02-25 17:30:31 +0100 |
|---|---|---|
| committer | José Expósito <jose.exposito89@gmail.com> | 2022-07-11 11:01:35 +0200 |
| commit | 65c436407f37118618b348b9b7303b55322d66a2 (patch) | |
| tree | 5d2d03c15c91556cb44e7f4d4c9dcb775ee6d200 /backend/libinput | |
| parent | c84cc660f0309a4139010be3cea631c464c52c11 (diff) | |
pointer: transform low-res to high-res axis events
Currently, the "wlr_event_pointer_axis" event stores low-resolution
values in its "delta_discrete" field. Low-resolution values are always
multiples of one, i.e., 1 for one wheel detent, 2 for two wheel
detents, etc.
In order to simplify internal handling of events, always transform in
the backend from the low-resolution value into the high-resolution
value.
The transformation is performed by multiplying by 120. The 120 magic
number is used by the kernel and it is exposed to clients in the
"WLR_POINTER_AXIS_DISCRETE_STEP" constant.
Diffstat (limited to 'backend/libinput')
| -rw-r--r-- | backend/libinput/pointer.c | 1 |
1 files changed, 1 insertions, 0 deletions
diff --git a/backend/libinput/pointer.c b/backend/libinput/pointer.c index 124a4fda..b391b0e5 100644 --- a/backend/libinput/pointer.c +++ b/backend/libinput/pointer.c @@ -116,6 +116,7 @@ void handle_pointer_axis(struct libinput_event *event, libinput_event_pointer_get_axis_value(pevent, axes[i]); wlr_event.delta_discrete = libinput_event_pointer_get_axis_value_discrete(pevent, axes[i]); + wlr_event.delta_discrete *= WLR_POINTER_AXIS_DISCRETE_STEP; wlr_signal_emit_safe(&pointer->events.axis, &wlr_event); } } |