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;;; acdw-modeline.el -*- lexical-binding: t; coding: utf-8-unix -*-
;; Author: Case Duckworth <acdw@acdw.net>
;; Created: Sometime during Covid-19, 2020
;; Keywords: configuration
;; URL: https://tildegit.org/acdw/emacs
;; This file is NOT part of GNU Emacs.
;;; License:
;; Everyone is permitted to do whatever with this software, without
;; limitation. This software comes without any warranty whatsoever,
;; but with two pieces of advice:
;; - Don't hurt yourself.
;; - Make good choices.
;;; Commentary:
;; `acdw-modeline' is a dumping ground for extra modeline functions, so they
;; don't clutter up `init.el'.
;;; Code:
(require 'simple-modeline)
(require 'minions)
(defcustom acdw-modeline/word-count-modes
(mapcar (lambda (m) (cons m nil)) simple-modeline-word-count-modes)
"Alist of modes to functions that `acdw-modeline/word-count' should dispatch.
If the cdr of the cons cell is nil, use the default function (`count-words').
Otherwise, cdr should be a function that takes two points (see `count-words')."
:type '(alist :key-type (symbol :tag "Major-Mode")
:value-type function)
:group 'simple-modeline)
(defun acdw-modeline/buffer-name () ; gonsie
"Display the buffer name in a face reflecting its modified status."
(propertize " %b "
'face
(if (buffer-modified-p)
'font-lock-warning-face
'font-lock-type-face)
'help-echo (buffer-file-name)))
(defun acdw-modeline/erc ()
"ERC indicator for the modeline."
(when (and (bound-and-true-p erc-track-mode)
(boundp 'erc-modified-channels-object))
(format-mode-line erc-modified-channels-object)))
(defun acdw-modeline/god-mode-indicator ()
"Display an indicator if `god-local-mode' is active."
(when (bound-and-true-p god-local-mode)
" Ω"))
(defun acdw-modeline/major-mode ()
"Displays the current major mode in the mode-line."
(propertize
(concat " "
(or (and (boundp 'delighted-modes)
(cadr (assq major-mode delighted-modes)))
(format-mode-line mode-name)))
'face 'bold
'keymap mode-line-major-mode-keymap
'mouse-face 'mode-line-highlight))
(defun acdw-modeline/minions () ; by me
"Display a button for `minions-minor-modes-menu'."
(concat
" "
(propertize
"&"
'help-echo (format
"Minor modes menu\nmouse-1: show menu.")
'local-map (purecopy (simple-modeline-make-mouse-map
'mouse-1
(lambda (event)
(interactive "e")
(with-selected-window (posn-window
(event-start event))
(minions-minor-modes-menu)))))
'mouse-face 'mode-line-highlight)))
(defun acdw-modeline/modified () ; modified from `simple-modeline'
"Displays a color-coded buffer modification/read-only
indicator in the mode-line."
(if (not (string-match-p "\\*.*\\*" (buffer-name)))
(let* ((read-only (and buffer-read-only (buffer-file-name)))
(modified (buffer-modified-p)))
(propertize
(concat " "
(cond
((derived-mode-p 'special-mode
'lui-mode)
"~")
(read-only "=")
(modified "+")
(t "-")))
'help-echo (format
(concat "Buffer is %s and %smodified\n"
"mouse-1: Toggle read-only status.")
(if read-only "read-only" "writable")
(if modified "" "not "))
'local-map (purecopy (simple-modeline-make-mouse-map
'mouse-1
(lambda (event)
(interactive "e")
(with-selected-window
(posn-window (event-start event))
(read-only-mode 'toggle)))))
'mouse-face 'mode-line-highlight))))
(defun acdw-modeline/narrowed ()
"Display an indication if the buffer is narrowed."
(when (buffer-narrowed-p)
(concat
""
(propertize
"N"
'help-echo (format "%s\n%s"
"Buffer is narrowed"
"mouse-2: widen buffer.")
'local-map (purecopy (simple-modeline-make-mouse-map
'mouse-2 #'mode-line-widen))
'mouse-face 'mode-line-highlight))))
(defun acdw-modeline/position ()
"Displays the current cursor position in the mode-line.
Unlike `simple-modeline-segment-position', this changes the first
character from '+' to '-' if the region goes 'backward' -- that
is, if point < mark."
`((line-number-mode
((column-number-mode
(column-number-indicator-zero-based
(8 " %l:%c")
(8 " %l:%C"))
(5 " L%l")))
((column-number-mode
(column-number-indicator-zero-based
(5 " C%c")
(5 " C%C")))))
,(if (region-active-p)
(propertize (format "%s%s"
(if (and (mark)
(< (point) (mark)))
"-"
"+")
(apply #'+ (mapcar
(lambda (pos)
(- (cdr pos)
(car pos)))
(region-bounds))))
'font-lock-face 'font-lock-variable-name-face))))
(defun acdw-modeline/text-scale ()
"Display the text scaling from the modeline, if scaled."
;; adapted from https://github.com/seagle0128/doom-modeline
(when (and (boundp 'text-scale-mode-amount)
(/= text-scale-mode-amount 0))
(format
(if (> text-scale-mode-amount 0)
" (%+d)"
" (%-d)")
text-scale-mode-amount)))
(defun acdw-modeline/track ()
"Display `tracking-mode' information."
(when tracking-mode
tracking-mode-line-buffers))
(defun acdw-modeline/vc-branch ()
"Display the version control branch of the current buffer in the modeline."
;; from https://www.gonsie.com/blorg/modeline.html, from Doom
(if-let ((backend (vc-backend buffer-file-name)))
(substring vc-mode (+ (if (eq backend 'Hg) 2 3) 2))))
(defun acdw-modeline/wc ()
"Display current `wc-buffer-stats'."
(when (bound-and-true-p wc-mode)
(or wc-buffer-stats "[w]")))
(defun acdw-modeline/winum ()
"Show the `winum' number of the current window in the modeline.
Only shows if there is more than one window."
(when (and (bound-and-true-p winum-mode)
(> winum--window-count 1))
(format winum-format (winum-get-number-string))))
(defun acdw-modeline/word-count ()
"Display a buffer word count, depending on the major mode.
Uses `acdw-modeline/word-count-modes' to determine which function to use."
(when-let ((modefun
(assoc major-mode acdw-modeline/word-count-modes #'equal)))
(let* ((fn (or (cdr modefun)
#'count-words))
(r (region-active-p))
(min (if r (region-beginning) (point-min)))
(max (if r (region-end) (point-max))))
(format " %s%dW" (if r "+" "") (funcall fn min max)))))
(provide 'acdw-modeline)
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