tvl-depot/users/wpcarro/emacs/.emacs.d/wpc/modeline.el
Vincent Ambo 019f8fd211 subtree(users/wpcarro): docking briefcase at '24f5a642'
git-subtree-dir: users/wpcarro
git-subtree-mainline: 464bbcb15c
git-subtree-split: 24f5a642af
Change-Id: I6105b3762b79126b3488359c95978cadb3efa789
2021-12-14 02:15:47 +03:00

69 lines
2.9 KiB
EmacsLisp

;;; modeline.el --- Customize my mode-line -*- lexical-binding: t -*-
;; Author: William Carroll <wpcarro@gmail.com>
;; Version: 0.0.1
;; Package-Requires: ((emacs "25.1"))
;; Homepage: https://user.git.corp.google.com/wpcarro/briefcase
;;; Commentary:
;; Because I use EXWM, I treat my Emacs mode-line like my system bar: I need to
;; quickly check the system time, and I expect it to be at the bottom-right of
;; my Emacs frame. I used doom-modeline for awhile, which is an impressive
;; package, but it conditionally colorizes on the modeline for the active
;; buffer. So if my bottom-right window is inactive, I cannot see the time.
;;
;; My friend, @tazjin, has a modeline setup that I think is more compatible with
;; EXWM, so I'm going to base my setup off of his.
;;; Code:
(use-package telephone-line)
(defun modeline-bottom-right-window? ()
"Determines whether the last (i.e.
bottom-right) window of the
active frame is showing the buffer in which this function is
executed."
(let* ((frame (selected-frame))
(right-windows (window-at-side-list frame 'right))
(bottom-windows (window-at-side-list frame 'bottom))
(last-window (car (seq-intersection right-windows bottom-windows))))
(eq (current-buffer) (window-buffer last-window))))
(defun modeline-maybe-render-time ()
"Conditionally renders the `mode-line-misc-info' string.
The idea is to not display information like the current time,
load, battery levels on all buffers."
(when (modeline-bottom-right-window?)
(telephone-line-raw mode-line-misc-info t)))
(defun modeline-setup ()
"Render my custom modeline."
(telephone-line-defsegment telephone-line-last-window-segment ()
(modeline-maybe-render-time))
;; Display the current EXWM workspace index in the mode-line
(telephone-line-defsegment telephone-line-exwm-workspace-index ()
(when (modeline-bottom-right-window?)
(format "[%s]" exwm-workspace-current-index)))
;; Define a highlight font for ~ important ~ information in the last
;; window.
(defface special-highlight
'((t (:foreground "white" :background "#5f627f"))) "")
(add-to-list 'telephone-line-faces
'(highlight . (special-highlight . special-highlight)))
(setq telephone-line-lhs
'((nil . (telephone-line-position-segment))
(accent . (telephone-line-buffer-segment))))
(setq telephone-line-rhs
'((accent . (telephone-line-major-mode-segment))
(nil . (telephone-line-last-window-segment
telephone-line-exwm-workspace-index))))
(setq telephone-line-primary-left-separator 'telephone-line-tan-left
telephone-line-primary-right-separator 'telephone-line-tan-right
telephone-line-secondary-left-separator 'telephone-line-tan-hollow-left
telephone-line-secondary-right-separator 'telephone-line-tan-hollow-right)
(telephone-line-mode 1))
(provide 'modeline)
;;; modeline.el ends here