doomemacs/modules/editor/god/autoload/god.el

;; editor/god/autoload/god.el -*- lexical-binding: t; -*-

(defvar +god-default-color (face-background 'cursor)
  "Default cursor and bar color.")

(defvar +god-read-only-mode-color "Gray"
  "Cursor and bar color when `read-only-mode' is enabled.")

(defvar +god-overwrite-mode-color "Yellow"
  "Cursor and bar color when `overwrite-mode' is enabled.")

(defvar +god-fill-overflow-color "IndianRed"
  "Cursor and bar color when fill column width has been exceeded.")

;;;###autoload
(defun +god--configure-cursor-and-modeline-h ()
  "Configure cursor type, cursor color and doom-modeline bar color depending on mode."
  (let* ((is-fill-overflow (> (current-column) fill-column))
         (previous-cursor-color (face-background 'cursor))
         (previous-modeline-color (and (facep 'doom-modeline-bar)
                                       (face-background 'doom-modeline-bar)))
         (is-god-mode (bound-and-true-p god-local-mode))
         (next-cursor-type
          (cond (buffer-read-only 'box)
                ((and overwrite-mode is-god-mode) 'hollow)
                ((or is-god-mode overwrite-mode) 'box)
                (t 'bar)))
         (next-cursor-and-modeline-color
          (cond (buffer-read-only +god-read-only-mode-color)
                (is-fill-overflow +god-fill-overflow-color)
                (overwrite-mode +god-overwrite-mode-color)
                (t +god-default-color))))
    (setq cursor-type next-cursor-type)
    (unless (eq previous-cursor-color next-cursor-and-modeline-color)
      (set-cursor-color next-cursor-and-modeline-color))
    (when (and (facep 'doom-modeline-bar)
               (fboundp 'doom-modeline-refresh-bars)
               (not (eq previous-modeline-color next-cursor-and-modeline-color)))
      (set-face-attribute 'doom-modeline-bar nil :background next-cursor-and-modeline-color)
      (doom-modeline-refresh-bars))))

;;;###autoload
(defun +god--toggle-on-overwrite-h ()
  (if (bound-and-true-p overwrite-mode)
      (god-local-mode-pause)
    (god-local-mode-resume)))