From 65c436407f37118618b348b9b7303b55322d66a2 Mon Sep 17 00:00:00 2001 From: José Expósito Date: Fri, 25 Feb 2022 17:30:31 +0100 Subject: 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. --- include/wlr/types/wlr_pointer.h | 2 ++ 1 file changed, 2 insertions(+) (limited to 'include') diff --git a/include/wlr/types/wlr_pointer.h b/include/wlr/types/wlr_pointer.h index cce2a5a8..16aed1dc 100644 --- a/include/wlr/types/wlr_pointer.h +++ b/include/wlr/types/wlr_pointer.h @@ -78,6 +78,8 @@ enum wlr_axis_orientation { WLR_AXIS_ORIENTATION_HORIZONTAL, }; +#define WLR_POINTER_AXIS_DISCRETE_STEP 120 + struct wlr_pointer_axis_event { struct wlr_pointer *pointer; uint32_t time_msec; -- cgit v1.2.3