89e37ee877
**TL;DR:** - Rename `colorscheme.el` to `theme.el` to align with Emacs's nomenclature. - Prune dependencies: - `cl-lib` - `>` - `prelude` Change-Id: I15f225671b4096ab08913583b7b464e316c95298 Reviewed-on: https://cl.tvl.fyi/c/depot/+/7412 Tested-by: BuildkiteCI Reviewed-by: wpcarro <wpcarro@gmail.com>
78 lines
2.3 KiB
EmacsLisp
78 lines
2.3 KiB
EmacsLisp
;;; theme.el --- Colors and stuff -*- 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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;; Package-Requires: ((emacs "24.3"))
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;;; Commentary:
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;;
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;; Cycle through a whitelist of themes.
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;;; Code:
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;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
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;; Dependencies
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;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
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(require 'cycle)
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;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
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;; Library
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;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
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(defgroup theme nil
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"Customization options for `theme'."
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:group 'theme)
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(defcustom theme-whitelist
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(cycle-from-list (custom-available-themes))
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"The whitelist of themes through which to cycle."
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:type '(cycle symbol)
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:group 'theme)
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(defcustom theme-after-change
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nil
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"Hook invoked after a new theme is loaded"
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:type 'hook
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:group 'theme)
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(defun theme-whitelist-set (theme)
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"Focus the THEME in the `theme-whitelist' cycle."
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(cycle-focus! (lambda (x) (equal x theme)) theme-whitelist)
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(theme--set (cycle-current theme-whitelist)))
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(defun theme-select ()
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"Load a theme using `completing-read'."
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(interactive)
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(let ((theme (completing-read "Theme: " (cycle-to-list theme-whitelist))))
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(theme--disable-all)
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(theme--set (intern theme))))
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(defun theme-next ()
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"Disable the currently active theme and load the next theme."
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(interactive)
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(disable-theme (cycle-current theme-whitelist))
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(theme--set (cycle-next! theme-whitelist))
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(message (format "Active theme: %s" (cycle-current theme-whitelist))))
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(defun theme-prev ()
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"Disable the currently active theme and load the previous theme."
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(interactive)
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(disable-theme (cycle-current theme-whitelist))
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(theme--set (cycle-prev! theme-whitelist))
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(message (format "Active theme: %s" (cycle-current theme-whitelist))))
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(defun theme--disable-all ()
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"Disable all currently enabled themes."
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(interactive)
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(dolist (x custom-enabled-themes)
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(disable-theme x)))
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(defun theme--set (theme)
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"Call `load-theme' with `THEME', ensuring that the line numbers are bright.
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There is no hook that I'm aware of to handle this more elegantly."
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(load-theme theme t)
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(run-hooks 'theme-after-change))
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(provide 'theme)
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;;; theme.el ends here
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