463 lines
19 KiB
EmacsLisp
463 lines
19 KiB
EmacsLisp
;;; core-modeline.el
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;; This file tries to be an almost self-contained configuration of my mode-line.
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;;
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;; It depends on the following external packages:
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;; + REQUIRED
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;; + f
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;; + s
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;; + powerline
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;; + projectile
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;; + OPTIONAL
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;; + evil-mode
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;; + anzu + evil-anzu
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;; + iedit and evil-multiedit
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;; + flycheck
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;;
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;; Both are simple, isolated functions and, besides projectile, have no other
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;; dependencies.
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(defvar doom-modeline-height 29
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"How tall the mode-line should be. This is only respected in GUI emacs.")
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(defvar doom-modeline-bar-width 3
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"How wide the mode-line bar should be. This is only respected in GUI emacs.")
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;; Custom faces
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(defface doom-modeline-alternate '((t (:inherit mode-line)))
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"Secondary color for the modeline.")
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(defface doom-modeline-highlight '((t (:inherit mode-line)))
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"Face for bright segments of the mode-line.")
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(defface doom-modeline-count '((t (:inherit mode-line)))
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"Face for 'X out of Y' segments, such as `*anzu', `*evil-substitute' and
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`iedit'")
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(defface doom-modeline-bar '((t (:inherit doom-modeline-highlight)))
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"The face used for the left-most bar on the mode-line of an active window.")
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(defface doom-modeline-eldoc-bar '((t (:inherit doom-modeline-bar)))
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"The face used for the left-most bar on the mode-line when eldoc-eval is
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active.")
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(defface doom-modeline-inactive-bar '((t (:inherit mode-line-inactive)))
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"The face used for the left-most bar on the mode-line of an inactive window.")
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(defface doom-modeline-count '((t (:inherit mode-line)))
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"Face for anzu/evil-substitute/evil-search number-of-matches display.")
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(defface doom-modeline-info '((t (:inherit success)))
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"Face for info-level messages in the modeline. Used by `*vc'.")
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(defface doom-modeline-warning '((t (:inherit warning)))
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"Face for warnings in the modeline. Used by `*flycheck'")
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(defface doom-modeline-urgent '((t (:inherit error)))
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"Face for errors in the modeline. Used by `*flycheck'")
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;;
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;; Dependencies
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;;
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(require 'powerline)
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(require 'all-the-icons)
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(use-package eldoc-eval
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:config
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(setq eldoc-in-minibuffer-show-fn 'doom-eldoc-show-in-mode-line)
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(eldoc-in-minibuffer-mode +1))
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;;
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;; Functions
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;;
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(defun doom-ml-flycheck-count (state)
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"Return flycheck information for the given error type STATE."
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(when (flycheck-has-current-errors-p state)
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(if (eq 'running flycheck-last-status-change)
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"?"
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(cdr-safe (assq state (flycheck-count-errors flycheck-current-errors))))))
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;; pyenv/rbenv version segment
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(defvar doom-ml-env-version-hook '()
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"Hook that runs whenever the environment version changes (e.g. rbenv/pyenv)")
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(defun doom-ml|env-update ()
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"Update (py|rb)env version string in `doom-ml--env-version', generated with
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`doom-ml--env-command'."
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(when doom-ml--env-command
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(let ((default-directory (projectile-project-root)))
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(let ((s (shell-command-to-string doom-ml--env-command)))
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(setq doom-ml--env-version (if (string-match "[ \t\n\r]+\\'" s)
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(replace-match "" t t s)
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s))
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(run-hook-with-args 'doom-ml-env-version-hook doom-ml--env-version)))))
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(defmacro def-version-cmd! (mode command)
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"Define a COMMAND for MODE that will set `doom-ml--env-command' when that mode
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is activated, which should return the version number of the current environment.
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It is used by `doom-ml|env-update' to display a version number in the modeline.
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For instance:
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(def-version-cmd! ruby-mode \"ruby --version | cut -d' ' -f2\")
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This will display the ruby version in the modeline in ruby-mode buffers. It is
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cached the first time."
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(add-hook 'focus-in-hook 'doom-ml|env-update)
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(add-hook 'find-file-hook 'doom-ml|env-update)
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`(add-hook ',mode (lambda () (setq doom-ml--env-command ,command))))
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(defun doom-make-xpm (color height width)
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"Create an XPM bitmap."
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(let ((data nil)
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(i 0))
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(setq data (make-list height (make-list width 1)))
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(pl/make-xpm "percent" color color (reverse data))))
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(pl/memoize 'doom-make-xpm)
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;;
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;; Initialization
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;;
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;; Where (py|rb)env version strings will be stored
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(defvar-local doom-ml--env-version nil)
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(defvar-local doom-ml--env-command nil)
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;; So the mode-line can keep track of "the current window"
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(defvar doom-ml-selected-window nil)
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(defun doom|set-selected-window (&rest _)
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(let ((window (frame-selected-window)))
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(when (and (windowp window)
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(not (minibuffer-window-active-p window)))
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(setq doom-ml-selected-window window))))
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(add-hook 'window-configuration-change-hook #'doom|set-selected-window)
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(add-hook 'focus-in-hook #'doom|set-selected-window)
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(advice-add 'select-window :after 'doom|set-selected-window)
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(advice-add 'select-frame :after 'doom|set-selected-window)
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;;
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;; Mode-line segments
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;;
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(defun *buffer-path ()
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"Displays the buffer's full path relative to the project root (includes the
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project root). Excludes the file basename. See `*buffer-name' for that."
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(when buffer-file-name
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(f-dirname
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(let ((buffer-path (file-relative-name buffer-file-name (projectile-project-root)))
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(max-length (truncate (/ (window-body-width) 1.75))))
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(concat (projectile-project-name) "/"
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(if (> (length buffer-path) max-length)
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(let ((path (reverse (split-string buffer-path "/" t)))
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(output ""))
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(when (and path (equal "" (car path)))
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(setq path (cdr path)))
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(while (and path (<= (length output) (- max-length 4)))
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(setq output (concat (car path) "/" output))
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(setq path (cdr path)))
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(when path
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(setq output (concat "../" output)))
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(when (string-suffix-p "/" output)
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(setq output (substring output 0 -1)))
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output)
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buffer-path))))))
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(defun *buffer-name ()
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"The buffer's base name or id."
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(if buffer-file-name
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(f-filename buffer-file-name)
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(s-trim-left (format-mode-line "%b"))))
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(defun *buffer-project ()
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"Displays `default-directory', for special buffers like the scratch buffer."
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(concat
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" "
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(all-the-icons-octicon
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"file-directory"
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:face 'doom-modeline-alternate :v-adjust -0.05 :height 1.3)
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(propertize (concat " " (abbreviate-file-name default-directory))
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'face `(:inherit doom-modeline-alternate))))
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(defun *buffer-state ()
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"Displays symbols representing the buffer's state; which can be one or more
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of: non-existent, modified or read-only."
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(let ((state (list))
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(base-face (if active 'doom-default 'mode-line-inactive)))
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(when buffer-file-name
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(if (file-exists-p buffer-file-name)
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(when (buffer-modified-p)
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(push (all-the-icons-octicon "primitive-dot" :face `(minibuffer-prompt ,base-face) :height 1.1 :v-adjust -0.05) state))
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(push (all-the-icons-octicon "circle-slash" :face `(doom-modeline-urgent ,base-face) :height 1.1 :v-adjust -0.05) state)))
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(when buffer-read-only
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(push (all-the-icons-octicon "lock" :face `(doom-modeline-urgent ,base-face) :height 1.1 :v-adjust -0.05) state))
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(when state
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(concat (s-join (propertize " " 'face base-face) state)))))
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(defun *buffer-info ()
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"Combined information about the current buffer, including the current working
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directory, the file name, and its state (modified, read-only or non-existent)."
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(let ((face (if active 'doom-default 'mode-line-inactive)))
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(concat (propertize " " 'face face)
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(propertize (or (*buffer-path) "") 'face `(:inherit (,face doom-modeline-alternate)))
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(propertize (or (*buffer-name) "") 'face face)
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(propertize " " 'face face)
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(let ((state (*buffer-state)))
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(if state (concat state (propertize " " 'face face)))))))
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(defun *buffer-encoding-abbrev ()
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"The line ending convention used in the buffer (if it isn't unix) and its
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character encoding (if it isn't UTF-8)."
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(let ((sys (symbol-name buffer-file-coding-system)))
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(concat (cond ((string-suffix-p "-mac" sys)
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"MAC ")
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((string-suffix-p "-dos" sys)
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"DOS ")
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(t ""))
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(if (string-match-p "u\\(tf-8\\|ndecided\\)" sys)
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""
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(concat (s-chop-suffixes '("-unix" "-dos" "-mac") sys) " ")))))
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(defun *major-mode ()
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"The major mode, including process, environment and text-scale info."
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(propertize
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(concat " "
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(format-mode-line mode-name)
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(if (stringp mode-line-process) mode-line-process)
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(if doom-ml--env-version (concat " " doom-ml--env-version))
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(and (featurep 'face-remap)
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(/= text-scale-mode-amount 0)
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(format " (%+d)" text-scale-mode-amount))
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" ")
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'face (if active 'mode-line 'mode-line-inactive)))
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(defun *vc ()
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"Displays the current branch, colored based on its state."
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(when vc-mode
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(let ((backend (substring vc-mode (+ 2 (length (symbol-name (vc-backend buffer-file-name))))))
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(face (let ((state (vc-state buffer-file-name)))
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(cond ((memq state '(edited added))
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'doom-modeline-info)
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((memq state '(removed needs-merge needs-update conflict unregistered))
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'doom-modeline-urgent)
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(t 'doom-modeline-warning)))))
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(concat
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" "
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(propertize (all-the-icons-octicon "git-branch")
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'face `(:inherit ,(if active face 'mode-line-inactive)
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:family ,(all-the-icons-octicon-family)
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:height 1.25)
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'display '(raise -0.1))
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" "
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(propertize backend 'face (if active face 'mode-line-inactive))
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" "))))
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(defvar-local doom--flycheck-err-cache nil "")
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(defvar-local doom--flycheck-cache nil "")
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(defun *flycheck ()
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"Persistent and cached flycheck indicators in the mode-line."
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(when (and (featurep 'flycheck) flycheck-mode)
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(if (or flycheck-current-errors
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(eq 'running flycheck-last-status-change))
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(or (and (or (eq doom--flycheck-err-cache doom--flycheck-cache)
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(memq flycheck-last-status-change '(running not-checked)))
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doom--flycheck-cache)
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(and (setq doom--flycheck-err-cache flycheck-current-errors)
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(setq doom--flycheck-cache
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(let ((fw (doom-ml-flycheck-count 'warning))
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(fe (doom-ml-flycheck-count 'error)))
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(concat (if fe (concat
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(all-the-icons-octicon "x" :face 'doom-modeline-urgent :height 1.2 :v-adjust -0.06)
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(propertize (format " %d " fe) 'face 'doom-modeline-urgent)))
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(if fw (concat
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(all-the-icons-octicon "x" :face 'doom-modeline-warning :height 1.2 :v-adjust -0.06)
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(propertize (format " %d " fw) 'face 'doom-modeline-warning)))
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(unless (or fe fw)
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(when active
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(all-the-icons-octicon "check" :face 'doom-modeline-info :height 1.2 :v-adjust -0.06)))
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" ")))))
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(concat
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(all-the-icons-octicon "check" :face 'doom-modeline-info :height 1.2 :v-adjust -0.06)
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" "))))
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(defun *selection-info ()
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"Information about the current selection, such as how many characters and
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lines are selected, or the NxM dimensions of a block selection."
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(when (and active (evil-visual-state-p))
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(propertize
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(let ((reg-beg (region-beginning))
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(reg-end (region-end))
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(evil (eq 'visual evil-state)))
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(let ((lines (count-lines reg-beg (min (1+ reg-end) (point-max))))
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(chars (- (1+ reg-end) reg-beg))
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(cols (1+ (abs (- (evil-column reg-end)
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(evil-column reg-beg))))))
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(cond
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;; rectangle selection
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((or (bound-and-true-p rectangle-mark-mode)
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(and evil (eq 'block evil-visual-selection)))
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(format " %dx%dB " lines (if evil cols (1- cols))))
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;; line selection
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((or (> lines 1) (eq 'line evil-visual-selection))
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(if (and (eq evil-state 'visual) (eq evil-this-type 'line))
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(format " %dL " lines)
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(format " %dC %dL " chars lines)))
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(t (format " %dC " (if evil chars (1- chars)))))))
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'face 'doom-modeline-highlight)))
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(defun *macro-recording ()
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"Display current macro being recorded."
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(when (and active defining-kbd-macro)
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(propertize
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(format " %s • " (char-to-string evil-this-macro))
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'face 'doom-modeline-highlight)))
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(make-variable-buffer-local 'anzu--state)
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(defun *anzu ()
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"Show the current match number and the total number of matches. Requires anzu
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to be enabled."
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(when (and (featurep 'evil-anzu) (evil-ex-hl-active-p 'evil-ex-search))
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(propertize
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(format " %s/%d%s "
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anzu--current-position anzu--total-matched
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(if anzu--overflow-p "+" ""))
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'face (if active 'doom-modeline-count 'mode-line-inactive))))
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(defun *evil-substitute ()
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"Show number of :s matches in real time."
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(when (and (evil-ex-p) (evil-ex-hl-active-p 'evil-ex-substitute))
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(propertize
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(let ((range (if evil-ex-range
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(cons (car evil-ex-range) (cadr evil-ex-range))
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(cons (line-beginning-position) (line-end-position))))
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(pattern (car-safe (evil-delimited-arguments evil-ex-argument 2))))
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(if pattern
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(format " %s matches "
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(count-matches pattern (car range) (cdr range))
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evil-ex-argument)
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" ... "))
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'face (if active 'doom-modeline-count 'mode-line-inactive))))
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(defun *iedit ()
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"Show the number of iedit regions matches + what match you're on."
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(when (and (boundp 'iedit-mode) iedit-mode)
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(propertize
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(let ((this-oc (let (message-log-max) (iedit-find-current-occurrence-overlay)))
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(length (or (ignore-errors (length iedit-occurrences-overlays)) 0)))
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(format
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" %s/%s "
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(save-excursion
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(unless this-oc
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(iedit-prev-occurrence)
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(setq this-oc (iedit-find-current-occurrence-overlay)))
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(if this-oc
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;; NOTE: Not terribly reliable
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(- length (-elem-index this-oc iedit-occurrences-overlays))
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"-"))
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length))
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'face (if active 'doom-modeline-count 'mode-line-inactive))))
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(defun *buffer-position ()
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"A more vim-like buffer position."
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(let ((start (window-start))
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(end (window-end))
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(pend (point-max)))
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(propertize
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(concat
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" %l:%c :"
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(if (and (= start 1)
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(= end pend))
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"All"
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(cond ((= start 1) "Top")
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((= end pend) "Bot")
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(t (format "%d%%%%" (/ end 0.01 pend))))))
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'face (if active 'doom-modeline-alternate 'mode-line-inactive))))
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;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
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(defvar doom-modeline-bar-active (face-background 'doom-modeline-bar)
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"The color to use for the bar in active window mode-lines.")
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(defvar doom-modeline-bar-inactive (face-background 'mode-line-inactive)
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"The color to use for the bar in inactive window mode-lines.")
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(defun doom-modeline (&optional id)
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`(:eval
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(let* ((active (eq (selected-window) doom-ml-selected-window))
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(lhs (list (propertize
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" " 'display (doom-make-xpm (if active
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doom-modeline-bar-active
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doom-modeline-bar-inactive)
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doom-modeline-height
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doom-modeline-bar-width))
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(*macro-recording)
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(*selection-info)
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(*anzu)
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(*evil-substitute)
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(*iedit)
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,(if (eq id 'scratch)
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'(*buffer-project)
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'(*buffer-info))
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" "
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(*flycheck)))
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(rhs (list (*buffer-encoding-abbrev)
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(*vc)
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(*major-mode)
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(*buffer-position)))
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(middle (propertize
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" " 'display `((space :align-to (- (+ right right-fringe right-margin)
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,(1+ (string-width (format-mode-line rhs)))))))))
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(list lhs middle rhs))))
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(setq-default mode-line-format (doom-modeline))
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;;
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;; Eldoc-in-mode-line support (for `eval-expression')
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;;
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(defvar doom-modeline-eldoc-bar-color (face-background 'doom-modeline-eldoc-bar)
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"The color to use for the bar when eldoc uses the mode-line.")
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(defun doom-eldoc-modeline ()
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`(:eval
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(let ((active (eq (selected-window) doom-ml-selected-window)))
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(list (list (propertize " " 'display (doom-make-xpm doom-modeline-eldoc-bar-color
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doom-modeline-height
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doom-modeline-bar-width))
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(and (bound-and-true-p str) str))
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(propertize " " 'display `((space :align-to (1- (+ right right-fringe right-margin)))))))))
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(defun doom-eldoc-show-in-mode-line (input)
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"Display string STR in the mode-line next to minibuffer."
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(with-current-buffer (eldoc-current-buffer)
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(let* ((max (window-width (selected-window)))
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(str (and (stringp input) (concat " " input)))
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(len (length str))
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(tmp-str str)
|
|
(mode-line-format (or (and str (doom-eldoc-modeline))
|
|
mode-line-format))
|
|
roll mode-line-in-non-selected-windows)
|
|
(catch 'break
|
|
(if (and (> len max) eldoc-mode-line-rolling-flag)
|
|
(progn
|
|
(while (setq roll (sit-for 0.3))
|
|
(setq tmp-str (substring tmp-str 2)
|
|
mode-line-format (concat tmp-str " [<]" str))
|
|
(force-mode-line-update)
|
|
(when (< (length tmp-str) 2) (setq tmp-str str)))
|
|
(unless roll
|
|
(when eldoc-mode-line-stop-rolling-on-input
|
|
(setq eldoc-mode-line-rolling-flag nil))
|
|
(throw 'break nil)))
|
|
(force-mode-line-update)
|
|
(sit-for eldoc-show-in-mode-line-delay))))
|
|
(force-mode-line-update)))
|
|
|
|
(provide 'core-modeline)
|
|
;;; core-modeline.el ends here
|