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plugin/wheel: reduce ACC_V120_THRESHOLD

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For mice with multipliers 30/120 and 40/120 nothing would change
as both will still cross threshold only after 2nd event.

But for MX Master 3 (and maybe others) that makes scroll beginning
a bit responsive, without jumping straight to 64/120 or 72/120.

Now events being emitted at 16+16+16 or 24+24 without significant
side-effects ("twitching" when resting finger on the wheel,
sudden scroll events when pressing middle button, etc). See !1262 for
some background.

Part-of: <https://gitlab.freedesktop.org/libinput/libinput/-/merge_requests/1267>
This commit is contained in:
gudvinr 2025-07-11 19:50:05 +03:00
parent 7716954365
commit 975ce6dbf5
1 changed files with 1 additions and 1 deletions
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2
src/libinput-plugin-mouse-wheel.c
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@ -37,7 +37,7 @@
#include "libinput-util.h" #include "libinput-util.h"
#define ACC_V120_TRIGGER_THRESHOLD 30 /* 1/4 of a wheel detent */ #define ACC_V120_TRIGGER_THRESHOLD 30 /* 1/4 of a wheel detent */
#define ACC_V120_THRESHOLD 59 #define ACC_V120_THRESHOLD 47 /* Good for both high-ish multipliers (8/120) and the rest of the mice (30/120, 40/120, etc) */
#define WHEEL_SCROLL_TIMEOUT ms2us(500) #define WHEEL_SCROLL_TIMEOUT ms2us(500)
enum wheel_state { enum wheel_state {