rgb.el - RGB lighting for Emacs!
A minor mode that allows interaction with RGB devices. Default support
is via OpenRGB, but
rgb.el is written to allow for extension and custom backends.
rgb.el has support for customization via M-x customize RET, and
you may find it easier to edit the mode-to-RGB-parameter mappings
(rgb-argmap) there as opposed to writing it directly in Elisp
(although a section below demonstrates doing just that with
cl-pairlis).
Examples
Direct RGB commands
;; Set device 0 to be green
(rgb-set :color "00FF00" :device 0)
;; Set device 1 to be red and in "Breathing" mode
(rgb-set :device 1 :color "FF0000" :mode "Breathing")Setting device list
(setq rgb-device-ids (list 0))Adding mode RGB configurations
;; Individually
(setf (alist-get 'perl-mode rgb-argmap)
'((color . "#FF0000")
(mode . "Strobe")))
(setf (alist-get 'python-mode rgb-argmap)
'((color . "#FFFF00")
(mode . "Static")))(setq rgb-argmap
(cl-pairlis
'(org-mode perl-mode python-mode emacs-lisp-mode rust-mode markdown-mode)
'(((color . "#800080") (mode . "Static")) ;; org-mode
((color . "#FF0000") (mode . "Strobe")) ;; perl-mode
((color . "#FFFF00") (mode . "Static")) ;; python-mode
((color . "#800080") (mode . "Static")) ;; emacs-lisp-mode
((color . "#FFA500") (mode . "Static")) ;; rust-mode
((color . "#FFC0CB") (mode . "Static")) ;; markdown-mode
)))Example use-package configuration
(use-package rgb
:demand
:init
(setq rgb-device-ids (list "0"))
(setq rgb-argmap
(cl-pairlis
'(org-mode perl-mode python-mode emacs-lisp-mode rust-mode markdown-mode c-mode c++-mode)
'(((color . "#800080") (mode . "Static")) ;; org-mode
((color . "#FF0000") (mode . "Strobe")) ;; perl-mode
((color . "#FFFF00") (mode . "Static")) ;; python-mode
((color . "#800080") (mode . "Static")) ;; emacs-lisp-mode
((color . "#FFA500") (mode . "Static")) ;; rust-mode
((color . "#FFC0CB") (mode . "Static")) ;; markdown-mode
((color . "#0000FF") (mode . "Static")) ;; c-mode
((color . "#0000FF") (mode . "Static")) ;; c++-mode
)))
:config
(rgb-mode))Running tests
You need to have these libraries installed:
Then:
bash run-tests.bash
Selecting a different backend
To select a different backend, set the rgb-mode-backend variable to
a string that is the name of the backend. See next section for some
caveats on how you have to enter the backend name.
Adding a new backend
To add a new backend, implement a function called rgb-backend-<foo>,
where <foo> is the name of the backend program that controls the RBG
device(s). To select that backend, set rgb-executable to the path to
the executable, and rgb-backend to <foo>. It's important that
<foo> in the rgb-backend-<foo> function and the rgb-backend
variable match exactly, since that's how rgb selects the correct
backend function to call. Your backend function should take arguments
parsed from an argmap as shown in the example (naturally, you can
change the exactly keyword arguments and values to match what's
expected by the backend program).
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