TL;DR: - Prune unused themes - Prefer "JetBrainsMono" font for all themes - Remove TODOs that I've either supported or that I'm uninterested in supporting
		
			
				
	
	
		
			151 lines
		
	
	
	
		
			5.4 KiB
		
	
	
	
		
			EmacsLisp
		
	
	
	
	
	
			
		
		
	
	
			151 lines
		
	
	
	
		
			5.4 KiB
		
	
	
	
		
			EmacsLisp
		
	
	
	
	
	
;;; themes.el --- Functions for working with my themes. -*- lexical-binding: t -*-
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;; Author: William Carroll <wpcarro@gmail.com>
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;;; Commentary:
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;; Because I couldn't get cycle-themes to work, I'm writing my own version.
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;;
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;; Terminology:
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;; - colorscheme: determines the colors used by syntax highlighting and other
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;;   Emacs UI elements.
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;; - theme: Structural representation of a "theme" that includes colorscheme
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;;   (see above), font, wallpaper.  "theme" is a superset of "colorscheme".
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;;
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;; Wishlist:
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;; - TODO: Support Rick & Morty theme.
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;; - TODO: Support retro/arcade/80s theme.
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;;; Code:
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;; Dependencies
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;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
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(require 'prelude)
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(require 'alist)
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(require 'symbol)
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(require 'f)
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(require 'wallpaper)
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(require 'fonts)
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(require 'cycle)
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(require 'symbol)
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(require 'random)
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(require 'colorscheme)
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(require 'dotted)
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;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
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;; Library
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;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
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;; The theme struct couples a font, a wallpaper, and a colorschemes.
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(cl-defstruct theme font wallpaper colorscheme)
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(defvar themes/current nil
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  "Store the name of the currently enabled theme.")
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(defconst themes/preferred-font "JetBrainsMono"
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  "The font I currently favor.")
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(defconst themes/themes
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  (list (dotted/new "Forest"
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                    (make-theme
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                     :font themes/preferred-font
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                     :wallpaper "forest_8k.jpg"
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                     :colorscheme 'doom-peacock))
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        (dotted/new "Geometry"
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                    (make-theme
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                     :font themes/preferred-font
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                     :wallpaper "geometric_4k.jpg"
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                     :colorscheme 'doom-molokai))
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        (dotted/new "Shapely Patterns"
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                    (make-theme
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                     :font themes/preferred-font
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                     :wallpaper "geometric_dark_4k.jpg"
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                     :colorscheme 'doom-vibrant))
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        ;; TODO: Support setting backgrounds as solid colors.
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        (dotted/new "Gruvbox"
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                    (make-theme
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                     :font themes/preferred-font
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                     :wallpaper "forest_8k.jpg"
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                     :colorscheme 'doom-gruvbox))
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        (dotted/new "Solarized Light"
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                    (make-theme
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                     :font themes/preferred-font
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                     :wallpaper "solarized_light_thinkpad.jpg"
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                     :colorscheme 'doom-solarized-light))
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        (dotted/new "Fantasy Tree"
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                    (make-theme
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                     :font themes/preferred-font
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                     :wallpaper "fantasy_tree_4k.jpg"
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                     :colorscheme 'doom-outrun-electric)))
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  "Predefined themes to suit my whims.")
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;; TODO: Choose between plural and singular names for Elisp modules.  For
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;; example, why have themes.el and colorscheme.el.  I think singular is
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;; preferable.
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;; TODO: Decide between "message", "show", "print", "inspect" for naming
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;; commands that output human-readable information to the "*Messages*" buffer.
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;; TODO: Is there a idiomatic CL/Elisp way to print struct information?
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(defun themes/print (name)
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  "Print a human-readable description of theme named NAME."
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  (let* ((theme (alist/get name themes/themes))
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         (f (theme-font theme))
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         (w (theme-wallpaper theme))
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         (c (theme-colorscheme theme)))
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    (message (string/format
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              "[themes] Name: %s. Font: %s. Wallpaper: %s. Colorscheme: %s"
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              name f w c))))
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;; TODO: Make this into a proper test.
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(defun themes/debug ()
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  "Print a human-readable description of theme named NAME."
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  (interactive)
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  (let ((theme (alist/get themes/current themes/themes)))
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    (prelude/assert (equal (theme-font theme)
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                           (fonts/current)))
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    (prelude/assert (equal (theme-wallpaper theme)
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                           (f-filename (wallpaper/current))))
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    (prelude/assert (equal (theme-colorscheme theme)
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                           (colorscheme/current)))
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    (message "[themes] Debug couldn't find any inconsistencies. All good!")))
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;; TODO: Assert that all of the dependencies exist before attempting to load
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;; theme.
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;; TODO: Provide a friendlier way to define themes.
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(defun themes/ivy-select ()
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  "Use ivy to interactively load a theme."
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  (interactive)
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  (let* ((name (ivy-read "Theme: " (alist/keys themes/themes))))
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    (message (string/format "name: %s" name))
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    (themes/set name)))
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(defun themes/load (theme)
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  "Load the struct, THEME."
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  (colorscheme/disable-all)
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  (let* ((font (theme-font theme))
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         (wallpaper (theme-wallpaper theme))
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         (colorscheme (theme-colorscheme theme)))
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    (fonts/whitelist-set font)
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    (wallpaper/whitelist-set (f-join wallpaper/path-to-dir wallpaper))
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    (colorscheme/whitelist-set colorscheme)))
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(defun themes/set (name)
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  "Set the currently enabled theme to the theme named NAME.
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NAME needs to a key defined in `themes/themes'."
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  (prelude/assert (alist/has-key? name themes/themes))
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  (themes/load (alist/get name themes/themes))
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  (setq themes/current name))
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(defun themes/print-current ()
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  "Print the currently enabled theme."
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  (interactive)
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  (themes/print themes/current))
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(defun themes/random ()
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  "Return the name of a randomly selected theme in `themes/themes'."
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  (->> themes/themes
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       alist/keys
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       random/choice))
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(provide 'themes)
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;;; themes.el ends here
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