;; Author: Artur Malabarba <emacs@endlessparentheses.com>
;; URL: https://github.com/Malabarba/beacon
;; Keywords: convenience
-;; Version: 0.1
+;; Version: 0.1.1
;; Package-Requires: ((seq "1.9"))
;; This program is free software; you can redistribute it and/or modify
;;
;; That’s it.
;;
-;;
-;; 1 Customizations
-;; ════════════════
-;;
-;; • The appearance of the beacon is configured by `beacon-size' and
-;; `beacon-color'.
-;;
-;; • The duration is configured by `beacon-blink-duration' and
-;; `beacon-blink-delay'.
-;;
-;; • To customize /when/ the beacon should blink at all, configure
-;; `beacon-blink-when-window-scrolls',
-;; `beacon-blink-when-window-changes', and
-;; `beacon-blink-when-point-moves'.
-;;
-;; • To prevent the beacon from blinking only on some major-modes,
-;; configure `beacon-dont-blink-major-modes'. For specific buffers, you
-;; can do `(setq-local beacon-mode nil)'. For even more refined
-;; control, configure `beacon-dont-blink-predicates'
-;;
-;; • Beacon can also push the mark for you whenever point moves a long
-;; distance. For this, configure `beacon-push-mark'.
+;; See the accompanying Readme.org for configuration details.
;;; Code:
(defvar beacon--timer nil)
-(defcustom beacon-push-mark nil
+(defcustom beacon-push-mark 35
"Should the mark be pushed before long movements?
If nil, `beacon' will not push the mark.
Otherwise this should be a number, and `beacon' will push the
e.g. \"#666600\"."
:type '(choice number color))
-(defcustom beacon-dont-blink-predicates nil
+(defvar beacon-dont-blink-predicates nil
"A list of predicates that prevent the beacon blink.
These predicate functions are called in order, with no
arguments, before blinking the beacon. If any returns
-non-nil, the beacon will not blink."
- :type 'hook)
+non-nil, the beacon will not blink.
+
+For instance, if you want to disable beacon on buffers where
+`hl-line-mode' is on, you can do:
+
+ (add-hook \\='beacon-dont-blink-predicates
+ (lambda () (bound-and-true-p hl-line-mode)))")
-(add-hook 'beacon-dont-blink-predicates (lambda () (bound-and-true-p hl-line-mode)))
(add-hook 'beacon-dont-blink-predicates #'window-minibuffer-p)
(defcustom beacon-dont-blink-major-modes '(magit-status-mode)
blink."
:type '(repeat symbol))
+(defcustom beacon-dont-blink-commands '(recenter-top-bottom)
+ "A list of commands that should not make the beacon blink.
+Use this for commands that scroll the window in very
+predictable ways, when the blink would be more distracting
+than helpful.."
+ :type '(repeat symbol))
+
\f
;;; Overlays
(defvar beacon--ovs nil)
(beacon--vanish)
(unless (or (not beacon-mode)
(run-hook-with-args-until-success 'beacon-dont-blink-predicates)
- (seq-find #'derived-mode-p beacon-dont-blink-major-modes))
+ (seq-find #'derived-mode-p beacon-dont-blink-major-modes)
+ (memq (or this-command last-command) beacon-dont-blink-commands))
(beacon--shine)
(setq beacon--timer
(run-at-time beacon-blink-delay
(markerp beacon--previous-place)
(equal (marker-buffer beacon--previous-place)
(current-buffer))
+ ;; Quick check that prevents running the code below in very
+ ;; short movements (like typing).
(> (abs (- (point) beacon--previous-place))
delta)
- (> (count-screen-lines (min (point) beacon--previous-place)
- (max (point) beacon--previous-place))
- delta)))
+ ;; Check if the movement was >= DELTA lines by moving DELTA
+ ;; lines. `count-screen-lines' is too slow if the movement had
+ ;; thousands of lines.
+ (save-excursion
+ (goto-char (min beacon--previous-place (point)))
+ (vertical-motion delta)
+ (> (max (point) beacon--previous-place)
+ (line-beginning-position)))))
(defun beacon--maybe-push-mark ()
"Push mark if it seems to be safe."
(if beacon-mode
(progn
(add-hook 'window-scroll-functions #'beacon--window-scroll-function)
+ (add-hook 'focus-in-hook #'beacon-blink)
(add-hook 'post-command-hook #'beacon--post-command)
(add-hook 'pre-command-hook #'beacon--vanish))
+ (remove-hook 'focus-in-hook #'beacon-blink)
(remove-hook 'window-scroll-functions #'beacon--window-scroll-function)
(remove-hook 'post-command-hook #'beacon--post-command)
(remove-hook 'pre-command-hook #'beacon--vanish)))
(provide 'beacon)
;;; beacon.el ends here
+
+;; Local Variables:
+;; indent-tabs-mode: nil
+;; End: