172 lines
5.6 KiB
EmacsLisp
172 lines
5.6 KiB
EmacsLisp
;;; fonts.el --- Font preferences -*- lexical-binding: t -*-
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;; Author: William Carroll <wpcarro@gmail.com>
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;; Version: 0.0.1
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;; URL: https://git.wpcarro.dev/wpcarro/briefcase
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;; Package-Requires: ((emacs "24.3"))
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;;; Commentary:
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;; Control my font preferences with ELisp.
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;;; Code:
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;; TODO: `defcustom' font-size.
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;; TODO: `defcustom' fonts.
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;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
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;; Dependencies
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;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
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(require 'prelude)
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(require 'cycle)
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(require 'device)
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(require 'maybe)
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(require 'cl-lib)
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;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
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;; Constants
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;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
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;; TODO: Troubleshoot why "8" appears so large on my desktop.
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;; TODO: Consider having a different font size when I'm using my 4K monitor.
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(defconst fonts-size
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(pcase (device-classify)
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('work-laptop "10")
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('work-desktop "10"))
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"My preferred default font-size, which is device specific.")
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(defconst fonts-size-step 10
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"The amount (%) by which to increase or decrease a font.")
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(defconst fonts-hacker-news-recommendations
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'("APL385 Unicode"
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"Go Mono"
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"Sudo"
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"Monoid"
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"Input Mono Medium" ;; NOTE: Also "Input Mono Thin" is nice.
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)
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"List of fonts optimized for programming I found in a HN article.")
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(defconst fonts-whitelist
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(cycle-from-list
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(list-concat
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fonts-hacker-news-recommendations
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'("JetBrainsMono"
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"Mononoki Medium"
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"Monospace"
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"Operator Mono Light"
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"Courier"
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"Andale Mono"
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"Source Code Pro"
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"Terminus")))
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"This is a list of my preferred fonts.")
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;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
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;; Functions
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;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
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;; TODO: fonts and fonts-whitelist make it difficult to name functions like
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;; fonts-set as a generic Emacs function vs choosing a font from the whitelist.
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(cl-defun fonts-cycle (&key forward?)
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"Cycle forwards when `FORWARD?' non-nil."
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(let ((font (if forward?
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(cycle-next fonts-whitelist)
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(cycle-prev fonts-whitelist))))
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(message (s-concat "Active font: " font))
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(fonts-set font)))
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(defun fonts-next ()
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"Quickly cycle through preferred fonts."
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(interactive)
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(fonts-cycle :forward? t))
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(defun fonts-prev ()
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"Quickly cycle through preferred fonts."
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(interactive)
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(fonts-cycle :forward? nil))
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(defun fonts-set (font &optional size)
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"Change the font to `FONT' with option integer, SIZE, in pixels."
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(if (maybe-some? size)
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(set-frame-font (string-format "%s %s" font size) nil t)
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(set-frame-font font nil t)))
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(defun fonts-whitelist-set (font)
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"Focuses the FONT in the `fonts-whitelist' cycle.
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The size of the font is determined by `fonts-size'."
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(prelude-assert (cycle-contains? font fonts-whitelist))
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(cycle-focus (lambda (x) (equal x font)) fonts-whitelist)
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(fonts-set (fonts-current) fonts-size))
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(defun fonts-ivy-select ()
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"Select a font from an ivy prompt."
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(interactive)
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(fonts-whitelist-set
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(ivy-read "Font: " (cycle-to-list fonts-whitelist))))
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(defun fonts-print-current ()
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"Message the currently enabled font."
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(interactive)
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(message
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(string-format "[fonts] Current font: \"%s\""
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(fonts-current))))
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(defun fonts-current ()
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"Return the currently enabled font."
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(cycle-current fonts-whitelist))
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(defun fonts-increase-size ()
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"Increase font size."
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(interactive)
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(->> (face-attribute 'default :height)
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(+ fonts-size-step)
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(set-face-attribute 'default (selected-frame) :height)))
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(defun fonts-decrease-size ()
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"Decrease font size."
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(interactive)
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(->> (face-attribute 'default :height)
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(+ (- fonts-size-step))
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(set-face-attribute 'default (selected-frame) :height)))
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(defun fonts-reset-size ()
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"Restore font size to its default value."
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(interactive)
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(fonts-whitelist-set (fonts-current)))
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(defun fonts-enable-ligatures ()
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"Call this function to enable ligatures."
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(interactive)
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(let ((alist '((33 . ".\\(?:\\(?:==\\|!!\\)\\|[!=]\\)")
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(35 . ".\\(?:###\\|##\\|_(\\|[#(?[_{]\\)") ;;
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(36 . ".\\(?:>\\)")
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(37 . ".\\(?:\\(?:%%\\)\\|%\\)")
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(38 . ".\\(?:\\(?:&&\\)\\|&\\)")
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(42 . ".\\(?:\\(?:\\*\\*/\\)\\|\\(?:\\*[*/]\\)\\|[*/>]\\)") ;;
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(43 . ".\\(?:\\(?:\\+\\+\\)\\|[+>]\\)")
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(45 . ".\\(?:\\(?:-[>-]\\|<<\\|>>\\)\\|[<>}~-]\\)")
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(46 . ".\\(?:\\(?:\\.[.<]\\)\\|[.=-]\\)") ;;
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(47 . ".\\(?:\\(?:\\*\\*\\|//\\|==\\)\\|[*/=>]\\)")
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(48 . ".\\(?:x[a-zA-Z]\\)")
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(58 . ".\\(?:::\\|[:=]\\)")
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(59 . ".\\(?:;;\\|;\\)")
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(60 . ".\\(?:\\(?:!--\\)\\|\\(?:~~\\|->\\|\\$>\\|\\*>\\|\\+>\\|--\\|<[<=-]\\|=[<=>]\\||>\\)\\|[*$+~/<=>|-]\\)")
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(61 . ".\\(?:\\(?:/=\\|:=\\|<<\\|=[=>]\\|>>\\)\\|[<=>~]\\)")
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(62 . ".\\(?:\\(?:=>\\|>[=>-]\\)\\|[=>-]\\)")
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(63 . ".\\(?:\\(\\?\\?\\)\\|[:=?]\\)")
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(91 . ".\\(?:]\\)")
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(92 . ".\\(?:\\(?:\\\\\\\\\\)\\|\\\\\\)")
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(94 . ".\\(?:=\\)")
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(119 . ".\\(?:ww\\)")
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(123 . ".\\(?:-\\)")
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(124 . ".\\(?:\\(?:|[=|]\\)\\|[=>|]\\)")
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(126 . ".\\(?:~>\\|~~\\|[>=@~-]\\)"))))
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(dolist (char-regexp alist)
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(set-char-table-range composition-function-table (car char-regexp)
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`([,(cdr char-regexp) 0 font-shape-gstring])))))
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(provide 'fonts)
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;;; fonts.el ends here
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