martin/emacs-doom
1
0
Fork 0
Code Issues Pull Requests Packages Projects Releases Wiki Activity

fix(macos): enable pixel-scroll-precision-mode for smooth trackpad/mouse scrolling

Browse Source 
macOS NS/Cocoa Emacs generates pixel-level scroll events from trackpad
and Magic Mouse. Without pixel-scroll-precision-mode, these events are
handled as line-based scrolling, resulting in jerky or broken scroll
behavior.

Changes:
- Enable pixel-scroll-precision-mode (Emacs 29+) in GUI mode
- Set pixel-scroll-precision-large-scroll-height to 40.0 (prevents
  trackpad fling from being interpolated frame-by-frame)
- Enable momentum scrolling (trackpad inertia from macOS)
- Keep line-based mouse-wheel-scroll-amount as fallback for physical
  scroll wheels
This commit is contained in:
Daneel
2026-02-23 14:11:16 +01:00
parent 96e8fc3f1c
commit a1701b60ea
1 changed files with 17 additions and 2 deletions
Download Patch File Download Diff File Expand all files Collapse all files

19
config.el
View File

@@ -178,10 +178,25 @@ Bound to cmd+v in org-mode and markdown-mode."
[down-mouse-1] [down-mouse-2] [down-mouse-3]))
(global-set-key key #'ignore))
(setq mouse-highlight nil)
;; Smooth scroll wheel: 3 lines per tick, no acceleration
;; Scroll wheel — macOS NS/Cocoa generates pixel-level scroll events from
;; trackpad and Magic Mouse. pixel-scroll-precision-mode (Emacs 29+) handles
;; these natively for smooth, 1:1 scrolling. Line-based mouse-wheel-scroll-amount
;; is kept as fallback for physical scroll wheels that send line events.
(setq mouse-wheel-scroll-amount '(3 ((shift) . 1) ((control) . nil))
mouse-wheel-progressive-speed nil
mouse-wheel-follow-mouse t))
mouse-wheel-follow-mouse t)
;; Enable pixel-precise scrolling (Emacs 29+) — essential for macOS trackpad/
;; Magic Mouse. Translates pixel deltas from NS scroll events into smooth
;; pixel-level buffer scrolling instead of jerky line jumps.
(when (fboundp 'pixel-scroll-precision-mode)
(pixel-scroll-precision-mode 1)
;; Large scroll threshold: pixel deltas above this trigger line-based scroll
;; (prevents trackpad fling from being interpolated frame-by-frame).
(setq pixel-scroll-precision-large-scroll-height 40.0
;; Use momentum scrolling from macOS (trackpad inertia)
pixel-scroll-precision-use-momentum t)))