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;;; +modeline.el --- my modeline customizations -*- lexical-binding: t; -*-
;;; Commentary:
;; `+modeline.el' is kind of a dumping ground for various
;; modeline-related functions. I probably don't use everything in
;; here. Credit given where possible.
;;; Code:
(require '+util)
(require 'simple-modeline)
(require 'minions)
(defgroup +modeline nil
"Various customization options for my modeline things."
:prefix "+modeline-"
:group 'simple-modeline)
(defun +modeline-buffer-name () ; gonsie
"Display the buffer name."
(propertize
(+string-align (buffer-name) 20 :before " " :ellipsis "… ")
'face 'bold
'help-echo (or (buffer-file-name)
(buffer-name))
'mouse-face 'mode-line-highlight))
(defcustom +modeline-minions-icon "&"
"The \"icon\" for `+modeline-minions' button."
:type 'string)
(defun +modeline-minions ()
"Display a button for `minions-minor-modes-menu'."
(concat " "
(propertize
+modeline-minions-icon
'help-echo "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 +modeline-major-mode ()
"Display the current `major-mode'."
(concat " "
(propertize (+string-truncate (format-mode-line mode-name)
12 "…")
'face 'bold
'keymap mode-line-major-mode-keymap
'mouse-face 'mode-line-highlight)))
(defcustom +modeline-modified-icon-alist '((ephemeral . "*")
(readonly . "=")
(modified . "+")
(special . "~")
(t . "-"))
"\"Icons\" to display depending on buffer status in modeline.
The CAR of each field is one of `readonly', `modified',
`special', `ephemeral', or t, and the CDR is a string to display
in that mode.
`readonly' is true if the buffer is read-only and visiting a file.
`modified' is true if the buffer is modified.
`special' is true if the buffer is a special-mode or derived buffer.
`ephemeral' is true if the buffer is not visiting a file.
t is the fall-back, shown when nothing else in the alist applies.
The order of elements matters: whichever one matches first is applied."
:type '(alist :key-type symbol
:value-type string)
:options '("readonly" "modified" "special" "t"))
(defcustom +modeline-modified-icon-special-modes '(special-mode)
"Modes to apply the `special-mode' icon to in the
`+modeline-modified'."
:type '(repeat function))
(defun +modeline-modified () ; modified from `simple-modeline-status-modified'
"Display a color-coded \"icon\" indicator for the buffer's status."
(let* ((icon (catch :icon
(dolist (cell +modeline-modified-icon-alist)
(when (pcase (car cell)
('ephemeral (not (buffer-file-name)))
('readonly buffer-read-only)
('modified (buffer-modified-p))
('special
(apply 'derived-mode-p
+modeline-modified-icon-special-modes))
('t t)
(_ nil))
(throw :icon (cdr cell)))))))
(concat " "
(propertize (or icon "")
'mouse-face 'mode-line-highlight))))
(defun +modeline-narrowed ()
"Display an indication that 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))))
(define-minor-mode file-percentage-mode
"Toggle the percentage display in the mode line (File Percentage Mode)."
:init-value t :global t :group 'mode-line)
(defun +modeline-position () ; adapted from `simple-modeline'
"Display the current cursor position."
(list '((line-number-mode
((column-number-mode
(column-number-indicator-zero-based
(9 " %l:%c")
(9 " %l:%C"))
(6 " %l:")))
((column-number-mode
(column-number-indicator-zero-based
(5 " :%c")
(5 " :%C"))))))
'(file-percentage-mode
((-3 "%p") "%% "))
(if (region-active-p)
(propertize (format "%s%-5d"
(if (and (mark) (< (point) (mark))) "-" "+")
(apply '+ (mapcar
(lambda (pos)
(- (cdr pos)
(car pos)))
(region-bounds))))
'font-lock-face 'font-lock-variable-name-face))))
(defun +modeline-vc ()
"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)))
(concat " " (substring vc-mode (+ (if (eq backend 'Hg) 2 3) 2)))))
(defun +modeline-track ()
"Display `tracking-mode' information."
'(tracking-mode
tracking-mode-line-buffers))
(defun +modeline-anzu ()
"Display `anzu--update-mode-line'."
(concat " " (anzu--update-mode-line)))
(defun +modeline-text-scale ()
"Display text scaling level."
;; 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)))
(provide '+modeline)
;;; +modeline.el ends here
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