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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: 1.1
;; Version: 1.1
;; 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 file modified asterisk face."
:group 'feebleline)
(defface feebleline-previous-buffer-face '((t :foreground "#7e7e7e"))
"Feebleline filename face."
:group 'feebleline)
(defface feebleline-dir-face '((t :inherit 'font-lock-variable-name-face))
"Feebleline filename face."
:group 'feebleline)
(defface feebleline-git-branch-face '((t :inherit 'font-lock-comment-face :bold nil :italic t))
"Feebleline filename face."
:group 'feebleline)
;; Customizations
(defcustom feebleline-show-time nil
"Set this if you want to show the time in the modeline proxy."
:group 'feebleline)
(defcustom feebleline-show-git-branch nil
"Set this if you want to show the git branch in the modeline proxy."
:group 'feebleline)
(defcustom feebleline-show-previous-buffer nil
"Set this if you want to show the previous 'buffer-name' in the modeline proxy."
:group 'feebleline)
(defcustom feebleline-show-directory t
"Set this if you want to show the direcory path as well as the file-name in the modeline proxy."
:group 'feebleline)
(defcustom feebleline-show-linenum t
"Set this if you want to show line number and column number in the modeline proxy."
:group 'feebleline)
(defun feebleline-previous-buffer-name ()
"Get name of previous buffer."
(buffer-name (other-buffer (current-buffer) 1)))
(defvar feebleline-mode-line-text nil
"Each element is a list with the following format:
(FORMAT-STRING FORMAT-ARGS PROPS)
FORMAT-STRING will be used as the first argument to `format', and
FORMAT-ARGS (a list) will be expanded as the rest of `format'
arguments. If PROPS is given, it should be a list which will be
sent to `add-text-properties'.")
(require 'magit nil t)
(if (fboundp 'magit-get-current-branch)
(defun feebleline--git-branch-string ()
"Return current git branch as a string, or the empty string if pwd is not in a git repo (or the git command is not found)."
(interactive)
(require 'esh-ext)
(let ((git-output (magit-get-current-branch)))
(if (> (length git-output) 0)
git-output
"(no branch)")))
(message "Warning: Feebleline couldn't find magit! Using hacky version to obtain git branch.")
(require 'esh-ext)
(defun feebleline--git-branch-string ()
"Return current git branch as a string, or the empty string if pwd is not in a git repo (or the git command is not found)."
(interactive)
(when (and (eshell-search-path "git")
(locate-dominating-file default-directory ".git"))
(let ((git-output (shell-command-to-string (concat "cd " default-directory " && git branch | grep '\\*' | sed -e 's/^\\* //'"))))
(if (> (length git-output) 0)
(substring git-output 0 -1)
"(no branch)")))))
(defvar feebleline--home-dir nil)
(setq
feebleline-mode-line-text
'(
("%s" ((if feebleline-show-time (format-time-string "[%H:%M:%S] ") ""))
(face feebleline-time-face))
("%s"
((if feebleline-show-linenum
(format "%5s:%-2s" (format-mode-line "%l") (current-column))
""))
(face feebleline-linum-face))
(" %s" ((if (and feebleline-show-directory (buffer-file-name))
(replace-regexp-in-string
feebleline--home-dir "~"
(file-name-directory (buffer-file-name)))
""))
(face feebleline-dir-face))
("%s" ((if (buffer-file-name) (file-name-nondirectory (buffer-file-name))
(buffer-name)))
(face feebleline-bufname-face))
("%s" ((if (and (buffer-file-name) (buffer-modified-p)) "*"
"" ))
(face feebleline-asterisk-face))
("%s" ((if feebleline-show-git-branch (concat " : " (feebleline--git-branch-string))
""))
(face feebleline-git-branch-face))
("%s" ((if feebleline-show-previous-buffer (concat " | " (feebleline-previous-buffer-name))
""))
(face feebleline-previous-buffer-face)))
)
(defun feebleline-default-settings-on ()
"Some default settings that works well with feebleline."
(setq window-divider-default-bottom-width 1
window-divider-default-places (quote bottom-only))
(window-divider-mode t)
(setq-default mode-line-format nil)
(setq mode-line-format nil))
(defun feebleline-legacy-settings-on ()
"Some default settings for EMACS < 25."
(set-face-attribute 'mode-line nil :height 0.1))
(defvar feebleline/timer)
(defvar feebleline/mode-line-format-previous)
;;;###autoload
(define-minor-mode feebleline-mode
"Replace modeline with a slimmer proxy."
:require 'feebleline
:global t
(if feebleline-mode
;; Activation:
(progn
(setq feebleline--home-dir (expand-file-name "~"))
(setq feebleline/mode-line-format-previous mode-line-format)
(setq feebleline/timer
(run-with-timer 0 0.5 '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:
(set-face-attribute 'mode-line nil :height 1.0)
(setq-default mode-line-format feebleline/mode-line-format-previous)
(setq 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)
(force-mode-line-update)
(redraw-display)
(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
|
