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|
;;; fonts.el --- Font preferences -*- lexical-binding: t -*-
;; Author: William Carroll <wpcarro@gmail.com>
;;; Commentary:
;; Control my font preferences with ELisp.
;;; Code:
;; TODO: `defcustom' font-size.
;; TODO: `defcustom' fonts.
;; TODO: Remove wpc/ namespace.
;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
;; Dependencies
;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
(require 'prelude)
(require 'cycle)
(require 'device)
(require 'maybe)
(require 'general)
;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
;; Constants
;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
;; TODO: Troubleshoot why "8" appears so large on my desktop.
;; TODO: Consider having a different font size when I'm using my 4K monitor.
(defconst fonts/size
(pcase (device/classify)
('work-laptop "9")
('work-desktop "8"))
"My preferred default font-size, which is device specific.")
(defconst fonts/keybindings? t
"Install the keybindings when non-nil.")
(defconst fonts/size-step 10
"The amount (%) by which to increase or decrease a font.")
(defconst fonts/hacker-news-recommendations
'("APL385 Unicode"
"Go Mono"
"Sudo"
"Monoid"
"Input Mono Medium" ;; NOTE: Also "Input Mono Thin" is nice.
)
"List of fonts optimized for programming I found in a HN article.")
(defconst fonts/whitelist
(cycle/from-list
(list/concat
fonts/hacker-news-recommendations
'("JetBrainsMono"
"Mononoki Medium"
"Monospace"
"Operator Mono Light"
"Courier"
"Andale Mono"
"Source Code Pro"
"Terminus")))
"This is a list of my preferred fonts.")
;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
;; Functions
;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
;; TODO: fonts and fonts/whitelist make it difficult to name functions like
;; fonts/set as a generic Emacs function vs choosing a font from the whitelist.
(cl-defun fonts/cycle (&key forward?)
"Cycle forwards when `FORWARD?' non-nil."
(let ((font (if forward?
(cycle/next fonts/whitelist)
(cycle/prev fonts/whitelist))))
(message (s-concat "Active font: " font))
(fonts/set (fonts/fontify font))))
(defun fonts/next ()
"Quickly cycle through preferred fonts."
(interactive)
(fonts/cycle :forward? t))
(defun fonts/prev ()
"Quickly cycle through preferred fonts."
(interactive)
(fonts/cycle :forward? nil))
(defun fonts/set (font &optional size)
"Change the font to `FONT' with option integer, SIZE, in pixels."
(if (maybe/some? size)
(set-frame-font (string/format "%s %s" font size) nil t)
(set-frame-font font nil t)))
(defun fonts/whitelist-set (font)
"Focuses the FONT in the `fonts/whitelist' cycle.
The size of the font is determined by `fonts/size'."
(prelude/assert (cycle/contains? font fonts/whitelist))
(cycle/focus (lambda (x) (equal x font)) fonts/whitelist)
(fonts/set (fonts/current) fonts/size))
(defun fonts/ivy-select ()
"Select a font from an ivy prompt."
(interactive)
(fonts/whitelist-set
(ivy-read "Font: " (cycle/to-list fonts/whitelist))))
(defun fonts/print-current ()
"Message the currently enabled font."
(interactive)
(message
(string/format "[fonts] Current font: \"%s\""
(fonts/current))))
(defun fonts/current ()
"Return the currently enabled font."
(cycle/current fonts/whitelist))
(defun fonts/increase-size ()
"Increase font size."
(interactive)
(->> (face-attribute 'default :height)
(+ fonts/size-step)
(set-face-attribute 'default (selected-frame) :height)))
(defun fonts/decrease-size ()
"Decrease font size."
(interactive)
(->> (face-attribute 'default :height)
(+ (- fonts/size-step))
(set-face-attribute 'default (selected-frame) :height)))
(defun fonts/reset-size ()
"Restore font size to its default value."
(interactive)
(fonts/whitelist-set (fonts/current)))
(when fonts/keybindings?
(progn
(general-define-key
:prefix "<SPC>"
:states '(normal)
"Ff" #'fonts/next
"Pf" #'fonts/prev)
(general-define-key "s-9" #'fonts/ivy-select)
(general-define-key "s-0" #'fonts/reset-size)
(general-define-key "s-j" #'fonts/decrease-size)
(general-define-key "s-k" #'fonts/increase-size)))
(provide 'fonts)
;;; fonts.el ends here
|
