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cursor: prevent hi-res mice triggering scroll actions too often

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Hi-res mice produces mulitple scroll events with `delta_discrete` != 0
during a single "click". This patch makes them trigger `Scroll` actions
only when the accumulated `delta_discrete` exceeds 120 (= 1 click).

See https://lists.freedesktop.org/archives/wayland-devel/2019-April/040377.html
for how hi-res scroll events are reported.
This commit is contained in:
tokyo4j 2025-07-22 00:19:22 +09:00 • committed by Hiroaki Yamamoto
parent 1747d9e961
commit cb79eccea1
2 changed files with 42 additions and 40 deletions
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7
include/labwc.h
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@ -111,9 +111,10 @@ struct seat {
bool cursor_visible;
struct wlr_cursor *cursor;
struct wlr_xcursor_manager *xcursor_manager;
struct {
double x, y;
} smooth_scroll_offset;
struct accumulated_scroll {
double delta;
double delta_discrete;
} accumulated_scrolls[2]; /* indexed by wl_pointer_axis */
bool cursor_scroll_wheel_emulation;
/*