tvl-depot/configs/shared/.emacs.d/wpc/screen-brightness.el
William Carroll 6b456c1b7a Massive configuration overhaul
Currently paying the price of months of non-diligent git usage.

Here's what has changed.

- Theming support in Gvcci and wpgtk
- Dropping support for i3
- Supporting EXWM
- Many Elisp modules
- Collapsed redundant directories in ./configs
2019-12-24 15:21:34 +00:00

57 lines
1.9 KiB
EmacsLisp

;;; screen-brightness.el --- Control laptop screen brightness -*- lexical-binding: t -*-
;; Author: William Carroll <wpcarro@gmail.com>
;;; Commentary:
;; Mainly just Elisp wrappers around `xbacklight`.
;;; Code:
;; TODO: Define some isomorphisms. E.g. int->string, string->int.
;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
;; Dependencies
;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
(require 'string)
(require 'dash)
;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
;; Constants
;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
(defconst screen-brightness/step-size 15
"The size of the increment or decrement step for the screen's brightness.")
(defcustom screen-brightness/install-kbds? t
"If t, install the keybindings to control screen brightness.")
;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
;; Library
;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
(defun screen-brightness/increase ()
"Increase the screen brightness."
(interactive)
(->> screen-brightness/step-size
int-to-string
(string/concat "xbacklight -inc ")
shell-command)
(message "[screen-brightness.el] Increased screen brightness."))
(defun screen-brightness/decrease ()
"Decrease the screen brightness."
(interactive)
(->> screen-brightness/step-size
int-to-string
(string/concat "xbacklight -dec ")
shell-command)
(message "[screen-brightness.el] Decreased screen brightness."))
(when screen-brightness/install-kbds?
(exwm-input-set-key
(kbd "<XF86MonBrightnessUp>") #'screen-brightness/increase)
(exwm-input-set-key
(kbd "<XF86MonBrightnessDown>") #'screen-brightness/decrease))
(provide 'screen-brightness)
;;; screen-brightness.el ends here