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;;; feebleline.el --- Replace modeline with a slimmer proxy
;; Copyright 2018 Benjamin Lindqvist
;; Author: Benjamin Lindqvist <benjamin.lindqvist@gmail.com>
;; Maintainer: Benjamin Lindqvist <benjamin.lindqvist@gmail.com>
;; URL: https://github.com/tautologyclub/feebleline
;; Package-Version: 1.0
;; Version: 1.0
;; This file is not part of GNU Emacs.
;; This program is free software: you can redistribute it and/or modify
;; it under the terms of the GNU General Public License as published by
;; the Free Software Foundation, either version 3 of the License, or
;; (at your option) any later version.
;; This program is distributed in the hope that it will be useful,
;; but WITHOUT ANY WARRANTY; without even the implied warranty of
;; MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
;; GNU General Public License for more details.
;; You should have received a copy of the GNU General Public License
;; along with this program. If not, see <http://www.gnu.org/licenses/>.
;;; Commentary:
;; For hardline Luddite editing!
;; Feebleline removes the modeline and replaces it with a slimmer proxy
;; version, which displays some basic information in the echo area
;; instead. This information is only displayed if the echo area is not used
;; for anything else (but if you switch frame/window, it will replace whatever
;; message is currently displayed).
;; To customize feebleline's format, modify `feebleline-mode-line-text'.
;; NOTE:
;; feebleline.el will look considerably better with the following
;; settings:
;; (window-divider-mode t)
;; (setq window-divider-default-bottom-width 1)
;; (setq window-divider-default-places (quote bottom-only))
;; But this mode does not work for all EMACS versions and may not work with
;; terminal EMACS (but I haven't checked). If you're on GUI EMACS and your
;; version supports it, just place the following in your init file:
;; (feebleline-default-settings)
;; Otherwise, do (feebleline-mode t) instead, but be warned that I'm not sure
;; if it will look good.
;;; Code:
(require 'advice)
(defvar feebleline-use-legacy-settings nil)
(when (< emacs-major-version 25)
(setq feebleline-use-legacy-settings t))
(setq feebleline-use-legacy-settings nil)
(defface feebleline-time-face '((t :inherit 'font-lock-comment-face))
"Feebleline timestamp face."
:group 'feebleline)
(defface feebleline-linum-face '((t :inherit 'default))
"Feebleline linum face."
:group 'feebleline)
(defface feebleline-bufname-face '((t :inherit 'font-lock-function-name-face))
"Feebleline filename face."
:group 'feebleline)
(defface feebleline-asterisk-face '((t :foreground "salmon"))
"Feebleline filename face."
:group 'feebleline)
(defface feebleline-previous-buffer-face '((t :foreground "#7e7e7e"))
"Feebleline filename face."
:group 'feebleline)
(defun feebleline-previous-buffer-name ()
"Get name of previous buffer."
(buffer-name (other-buffer (current-buffer) 1)))
(defvar feebleline-mode-line-text)
(setq feebleline-mode-line-text
'(("%6s" ((format "%s,%s" (format-mode-line "%l") (current-column))))
(" : %s" ((if (buffer-file-name) (buffer-file-name)
(buffer-name))) (face feebleline-bufname-face))
("%s" ((if (and (buffer-file-name) (buffer-modified-p)) "*" "" ))
(face feebleline-asterisk-face))
(" | %s" ((feebleline-previous-buffer-name))
(face feebleline-previous-buffer-face))))
(defun feebleline-default-settings-on ()
"Some default settings that works well with feebleline."
(custom-set-variables
'(window-divider-default-bottom-width 1)
'(window-divider-default-places (quote bottom-only)))
(window-divider-mode t)
(custom-set-variables '(mode-line-format nil))
)
(defvar feebleline-previous-modeline-height)
(defun feebleline-legacy-settings-on ()
"Some default settings for EMACS < 25."
(custom-set-faces '(mode-line ((t (:height 0.1))))))
(defvar feebleline/timer)
(defvar feebleline/mode-line-format-previous)
(define-minor-mode feebleline-mode
"Replace modeline with a slimmer proxy."
:require 'feebleline
:global t
(if feebleline-mode
;; Activation:
(progn
(setq feebleline/mode-line-format-previous mode-line-format)
(setq feebleline/timer
(run-with-timer 0 0.1 'feebleline-mode-line-proxy-fn))
(if feebleline-use-legacy-settings (feebleline-legacy-settings-on)
(feebleline-default-settings-on))
(ad-activate 'handle-switch-frame)
(add-hook 'focus-in-hook 'feebleline-mode-line-proxy-fn))
;; Deactivation:
(custom-set-faces '(mode-line ((t :height unspecified))))
(custom-set-variables
'(mode-line-format feebleline/mode-line-format-previous))
(cancel-timer feebleline/timer)
(ad-deactivate 'handle-switch-frame)
(remove-hook 'focus-in-hook 'feebleline-mode-line-proxy-fn)
(with-current-buffer " *Minibuf-0*"
(erase-buffer))))
(defun feebleline--mode-line-part (part)
"Return a PART (an element) of `feebleline-mode-line-text` as a propertized string."
(let ((text (apply #'format (append (list (car part))
(mapcar #'eval (cadr part)))))
(props (elt part 2)))
(when props
(add-text-properties 0 (length text) props text))
text))
(defvar feebleline-placeholder)
(defun feebleline-write-buffer-name-maybe ()
"Replace echo-area message with mode-line proxy."
(progn (setq feebleline-placeholder (mapconcat #'feebleline--mode-line-part
feebleline-mode-line-text ""))
(with-current-buffer " *Minibuf-0*"
(erase-buffer)
(insert feebleline-placeholder))))
(defun feebleline-mode-line-proxy-fn ()
"Put a mode-line proxy in the echo area *if* echo area is empty."
(unless (current-message)
(feebleline-write-buffer-name-maybe)))
(defadvice handle-switch-frame (after switch-frame-message-name)
"Get the modeline proxy to work with i3 switch focus."
(feebleline-write-buffer-name-maybe)
ad-do-it
(feebleline-write-buffer-name-maybe))
(provide 'feebleline)
;;; feebleline.el ends here
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