larstvei/Focus
1
0
Fork 0
mirror of https://github.com/larstvei/Focus.git synced 2025-11-04 02:00:11 +00:00
Code Issues Actions Packages Projects Releases Wiki Activity

Documented every function/variable

Browse Source
This commit is contained in:
Lars Tveito 2015-05-12 22:23:36 +02:00
parent 8028fc088f
commit 03e3cbc566
1 changed files with 20 additions and 2 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

22
focus-mode.el
View File

@ -1,15 +1,24 @@
(require 'cl-lib)
(defvar-local focus-pre-overlay nil)
(defvar-local focus-post-overlay nil)
(defvar-local focus-pre-overlay nil
"The overlay that dims the text prior to the current-point.")
(defvar-local focus-post-overlay nil
"The overlay that dims the text past the current-point.")
(defun focus-search-backward (regex)
"A wrapper for re-search-backward, where the point does not move,
and if the search fails, it returns NIL."
(save-excursion (re-search-backward regex nil t)))
(defun focus-search-forward (regex)
"A wrapper for re-search-backward, where the point does not move,
and if the search fails, it returns NIL."
(save-excursion (re-search-forward regex nil t)))
(defun focus-average-colors (color &rest colors)
"This function takes one or more colors and returns the average
of RGB values of the given colors."
(let* ((colors (cons color colors))
(colors (mapcar 'color-name-to-rgb colors))
(len (length colors))
@ -18,12 +27,18 @@
(apply 'color-rgb-to-hex avg)))
(defun focus-move-focus ()
"If `focus-mode' is enabled, this command fires after each
command, and moves the dimming overlays."
(let* ((pre (or (focus-search-backward "^\n") (point-min)))
(post (or (focus-search-forward "^\n") (point-max))))
(move-overlay focus-pre-overlay (point-min) pre)
(move-overlay focus-post-overlay post (point-max))))
(defun focus-init ()
"This function is run when focus-mode is enabled. It sets the
`focus-pre-overlay' and `focus-post-overlay' to overlays; these
are invisible until `focus-move-focus' is run. It adds
focus-move-focus to `post-command-hook'."
(setq focus-pre-overlay (make-overlay (point-min) (point-min))
focus-post-overlay (make-overlay (point-max) (point-max)))
(let ((color (focus-average-colors
@ -34,6 +49,9 @@
(add-hook 'post-command-hook 'focus-move-focus nil t))
(defun focus-terminate ()
"When `focus-mode' is disabled the overlays pointed to by
`focus-pre-overlay' and `focus-post-overlay' are deleted, and
`focus-move-focus' is removed from `post-command-hook'."
(progn (mapc 'delete-overlay (list focus-pre-overlay focus-post-overlay))
(remove-hook 'post-command-hook 'focus-move-focus t)))