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|
;;; themes.el --- Functions for working with my themes. -*- lexical-binding: t -*-
;; Author: William Carroll <wpcarro@gmail.com>
;;; Commentary:
;; Because I couldn't get cycle-themes to work, I'm writing my own version.
;;
;; Terminology:
;; - colorscheme: determines the colors used by syntax highlighting and other
;; Emacs UI elements.
;; - theme: Structural representation of a "theme" that includes colorscheme
;; (see above), font, wallpaper. "theme" is a superset of "colorscheme".
;;
;; Wishlist:
;; - TODO: Find a way to update the terminal (e.g. terminator) theme.
;; - TODO: Ensure terminal font is updated when Emacs font changes.
;; - TODO: Support a light theme.
;; - TODO: Support Rick & Morty theme.
;; - TODO: Support retro/arcade/80s theme.
;;; Code:
;; Dependencies
(require 'prelude)
(require 'alist)
(require 'symbol)
(require 'f)
(require 'wallpaper)
(require 'fonts)
(require 'cycle)
(require 'symbol)
(require 'random)
(require 'colorscheme)
(require 'dotted)
;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
;; Library
;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
;; The theme struct couples a font, a wallpaper, and a colorschemes.
(cl-defstruct theme
font
wallpaper
colorscheme)
(defvar themes/current nil
"Store the name of the currently enabled theme.")
(defconst themes/themes
(list (dotted/new
"Forest"
(make-theme
:font "Operator Mono Light"
:wallpaper "forest_8k.jpg"
:colorscheme 'doom-peacock))
(dotted/new
"Geometry"
(make-theme
:font "Input Mono Medium"
:wallpaper "geometric_4k.jpg"
:colorscheme 'doom-molokai))
(dotted/new
"Ice"
(make-theme
:font "Go Mono"
:wallpaper "construction_paper_iceberg_4k.jpg"
:colorscheme 'doom-dracula))
(dotted/new
"Lego Manhattan"
(make-theme
:font "Input Mono Medium"
:wallpaper "lego_manhattan.jpg"
:colorscheme 'base16-atelier-sulphurpool))
(dotted/new
"Shapely Patterns"
(make-theme
:font "Operator Mono Light"
:wallpaper "geometric_dark_4k.jpg"
:colorscheme 'doom-vibrant))
(dotted/new
"Edison Lightbulb"
(make-theme
:font "Operator Mono Light"
:wallpaper "lightbulb_4k.jpg"
:colorscheme 'base16-atelier-cave))
(dotted/new
"Wall-E"
(make-theme
:font "Input Mono Medium"
:wallpaper "walle_4k.jpg"
:colorscheme 'doom-material))
(dotted/new
"Galaxy"
(make-theme
:font "Source Code Pro"
:wallpaper "galaxy_4k.jpg"
:colorscheme 'doom-moonlight))
(dotted/new
"Underwater"
(make-theme
:font "Go Mono"
;; TODO: Change this wallpaper to an oceanic scene.
:wallpaper "galaxy_4k.jpg"
:colorscheme 'doom-solarized-dark))
(dotted/new
"Fantasy Tree"
(make-theme
:font "Go Mono"
:wallpaper "fantasy_tree_4k.jpg"
:colorscheme 'doom-outrun-electric)))
"Predefined themes to suit my whims.")
;; TODO: Choose between plural and singular names for Elisp modules. For
;; example, why have themes.el and colorscheme.el. I think singular is
;; preferable.
;; TODO: Decide between "message", "show", "print", "inspect" for naming
;; commands that output human-readable information to the "*Messages*" buffer.
;; TODO: Is there a idiomatic CL/Elisp way to print struct information?
(defun themes/print (name)
"Print a human-readable description of theme named NAME."
(let* ((theme (alist/get name themes/themes))
(f (theme-font theme))
(w (theme-wallpaper theme))
(c (theme-colorscheme theme)))
(message (string/format
"[themes] Name: %s. Font: %s. Wallpaper: %s. Colorscheme: %s"
name f w c))))
;; TODO: Make this into a proper test.
(defun themes/debug ()
"Print a human-readable description of theme named NAME."
(interactive)
(let ((theme (alist/get themes/current themes/themes)))
(prelude/assert (equal (theme-font theme)
(fonts/current)))
(prelude/assert (equal (theme-wallpaper theme)
(f-filename (wallpaper/current))))
(prelude/assert (equal (theme-colorscheme theme)
(colorscheme/current)))
(message "[themes] Debug couldn't find any inconsistencies. All good!")))
;; TODO: Assert that all of the dependencies exist before attempting to load
;; theme.
;; TODO: Provide a friendlier way to define themes.
(defun themes/ivy-select ()
"Use ivy to interactively load a theme."
(interactive)
(let* ((name (ivy-read "Theme: " (alist/keys themes/themes))))
(message (string/format "name: %s" name))
(themes/set name)))
(defun themes/load (theme)
"Load the struct, THEME."
(colorscheme/disable-all)
(let* ((font (theme-font theme))
(wallpaper (theme-wallpaper theme))
(colorscheme (theme-colorscheme theme)))
(fonts/whitelist-set font)
(wallpaper/whitelist-set (f-join wallpaper/path-to-dir wallpaper))
(colorscheme/whitelist-set colorscheme)))
(defun themes/set (name)
"Set the currently enabled theme to the theme named NAME.
NAME needs to a key defined in `themes/themes'."
(prelude/assert (alist/has-key? name themes/themes))
(themes/load (alist/get name themes/themes))
(setq themes/current name))
(defun themes/print-current ()
"Print the currently enabled theme."
(interactive)
(themes/print themes/current))
(defun themes/random ()
"Return the name of a randomly selected theme in `themes/themes'."
(->> themes/themes
alist/keys
random/choice))
(provide 'themes)
;;; themes.el ends here
|
