doomemacs/modules/ui/tabs/config.el
gpanago 813c961511
perf(tabs): rate limit centaur-tabs-buffer-update-groups
`centaur-tabs-buffer-update-groups` walks every buffer to determine the
group it belongs to. This function can be called execessively (upwards
of 1,000 times per second in certain conditions), as it is called on
every redisplay (it is indirectly attached to `tab-line-format`). This
rate limits its calls to about 10 per second.

Close: #7792
Ref: ema2159/centaur-tabs#222
2024-04-06 00:21:59 -04:00

49 lines
1.7 KiB
EmacsLisp

;;; ui/tabs/config.el -*- lexical-binding: t; -*-
(defcustom +tabs-buffer-update-groups-delay 0.1
"Minimum wait time (in seconds) before tab groups are recalculated."
:type 'float
:group 'doom)
;;
;;; Packages
(use-package! centaur-tabs
:hook (doom-first-file . centaur-tabs-mode)
:init
(setq centaur-tabs-set-icons t
centaur-tabs-gray-out-icons 'buffer
centaur-tabs-set-bar 'left
centaur-tabs-set-modified-marker t
centaur-tabs-close-button ""
centaur-tabs-modified-marker ""
centaur-tabs-icon-type 'nerd-icons
;; Scrolling (with the mouse wheel) past the end of the tab list
;; replaces the tab list with that of another Doom workspace. This
;; prevents that.
centaur-tabs-cycle-scope 'tabs)
:config
(add-hook! '(+doom-dashboard-mode-hook +popup-buffer-mode-hook)
(defun +tabs-disable-centaur-tabs-mode-maybe-h ()
"Disable `centaur-tabs-mode' in current buffer."
(when (centaur-tabs-mode-on-p)
(centaur-tabs-local-mode))))
;; HACK: `centaur-tabs-buffer-update-groups' is both expensive and called too
;; frequently. There really is no reason to call it more than 10 times per
;; second, as buffers rarely change groups more frequently than that.
(let ((time (float-time)))
(defadvice! +tabs--rate-limit-buffer-update-groups-a (fn)
:around #'centaur-tabs-buffer-update-groups
(let ((now (float-time)))
(if-let ((buf (and (< now (+ time +tabs-buffer-update-groups-delay))
(assq (current-buffer) centaur-tabs--buffers))))
(car (nth 2 buf))
(setq time now)
(funcall fn))))))
;; TODO tab-bar-mode (emacs 27)
;; TODO tab-line-mode (emacs 27)