507 lines
20 KiB
EmacsLisp
507 lines
20 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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;;; These are the invisible dependencies
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;; Required
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;;(require 'f)
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;;(require 's)
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;;(require 'evil)
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;;(require 'projectile)
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;;(require 'all-the-icons)
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;; Optional
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;;(require 'flycheck)
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;;(require 'anzu)
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;;(require 'evil-anzu)
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;;(require 'iedit)
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;;(require 'evil-multiedit)
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(require 'powerline)
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(require 'all-the-icons)
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;; all-the-icons doesn't work in the terminal, so we "disable" it.
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(unless window-system
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(defun all-the-icons-octicon (&rest _) "" "")
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(defun all-the-icons-faicon (&rest _) "" "")
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(defun all-the-icons-fileicon (&rest _) "" "")
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(defun all-the-icons-wicon (&rest _) "" "")
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(defun all-the-icons-alltheicon (&rest _) "" ""))
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;;
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;; Variables
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;;
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(defvar doom-modeline-height 29
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"How tall the mode-line should be (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 (only respected in GUI emacs).")
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;;
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;; Custom faces
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;;
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(defface doom-modeline-buffer-path '((t (:inherit mode-line :bold t)))
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"Face used for the dirname part of the buffer path.")
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(defface doom-modeline-buffer-project
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'((t (:inherit doom-modeline-buffer-path :bold nil)))
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"Face used for the filename part of the mode-line buffer path.")
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(defface doom-modeline-buffer-modified '((t (:inherit highlight :background nil)))
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"Face used for the 'unsaved' symbol in the mode-line.")
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(defface doom-modeline-buffer-major-mode '((t (:inherit mode-line :bold t)))
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"Face used for the major-mode segment in the mode-line.")
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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-panel '((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-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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;; Bar
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(defface doom-modeline-bar '((t (:inherit highlight :foreground nil)))
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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 shadow :foreground nil)))
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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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;;
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;; Functions
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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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(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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(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 (doom/project-root))
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(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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(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 ',mode (lambda () (setq doom-ml--env-command ,command))))
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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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(defun doom-make-xpm (color height width)
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"Create an XPM bitmap."
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(when window-system
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(propertize
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" " 'display
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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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(defun doom-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 `doom-buffer-name' for that."
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(if buffer-file-name
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(let* ((default-directory (f-dirname buffer-file-name))
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(buffer-path (f-relative buffer-file-name (doom/project-root)))
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(max-length (truncate (* (window-body-width) 0.4))))
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(when (and buffer-path (not (equal buffer-path ".")))
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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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"%b"))
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(defsubst active () (eq (selected-window) powerline-selected-window))
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;; Memoize for optimization
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(pl/memoize 'doom-make-xpm)
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(pl/memoize 'face-background)
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(pl/memoize 'all-the-icons-octicon)
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;;
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;; Mode-line segments
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;;
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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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(let ((face (if (active) 'doom-modeline-buffer-project)))
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(concat (all-the-icons-octicon
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"file-directory"
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:face face
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:v-adjust -0.05
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:height 1.25)
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(propertize (concat " " (abbreviate-file-name (doom/project-root)))
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'face face))))
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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 ((all-the-icons-scale-factor 1.2)
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(modified-p (buffer-modified-p))
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faces)
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(if (active) (push 'doom-modeline-buffer-path faces))
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(if modified-p (push 'doom-modeline-buffer-modified faces))
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(concat (if buffer-read-only
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(concat (all-the-icons-octicon
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"lock"
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:face 'doom-modeline-warning
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:v-adjust -0.05)
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" ")
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(when modified-p
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(concat
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(all-the-icons-faicon "floppy-o"
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:face 'doom-modeline-buffer-modified
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:v-adjust -0.1)
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" ")))
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(when (and buffer-file-name (not (file-exists-p buffer-file-name)))
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(concat (all-the-icons-octicon
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"circle-slash"
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:face 'doom-modeline-urgent
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:v-adjust -0.05)
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" "))
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(propertize (doom-buffer-path)
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'face (if faces `(:inherit ,faces))))))
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(defun *buffer-encoding ()
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"The encoding and eol style of the buffer."
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(concat (let ((eol-type (coding-system-eol-type buffer-file-coding-system)))
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(cond ((eq eol-type 0) "LF ")
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((eq eol-type 1) "CRLF ")
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((eq eol-type 2) "CR ")))
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(let* ((sys (coding-system-plist buffer-file-coding-system))
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(sys-name (plist-get sys :name))
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(sys-cat (plist-get sys :category)))
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(cond ((memq sys-cat '(coding-category-undecided coding-category-utf-8))
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"UTF-8")
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(t (upcase (symbol-name sys-name)))))
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" "))
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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 (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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'face (if (active) 'doom-modeline-buffer-major-mode)))
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(defun *vc ()
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"Displays the current branch, colored based on its state."
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(when (and vc-mode buffer-file-name)
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(let ((backend (vc-backend buffer-file-name))
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(state (vc-state buffer-file-name))
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(face 'mode-line-inactive)
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(active (active))
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(all-the-icons-scale-factor 1.0)
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(all-the-icons-default-adjust -0.1))
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(concat (propertize " " 'face 'variable-pitch)
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(cond ((memq state '(edited added))
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(if active (setq face 'doom-modeline-info))
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(all-the-icons-octicon
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"git-branch"
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:face face
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:height 1.2
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:v-adjust -0.05))
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((eq state 'needs-merge)
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(if active (setq face 'doom-modeline-info))
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(all-the-icons-octicon "git-merge" :face face))
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((eq state 'needs-update)
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(if active (setq face 'doom-modeline-warning))
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(all-the-icons-octicon "arrow-down" :face face))
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((memq state '(removed conflict unregistered))
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(if active (setq face 'doom-modeline-urgent))
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(all-the-icons-octicon "alert" :face face))
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(t
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(if active (setq face 'mode-line))
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(all-the-icons-octicon
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"git-branch"
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:face face
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:height 1.2
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:v-adjust -0.05)))
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" "
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(propertize (substring vc-mode (+ (if (eq backend 'Hg) 2 3) 2))
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'face (if active face))
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" "
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(propertize " " 'face 'variable-pitch)))))
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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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(if (eq flycheck-last-status-change 'running)
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(concat " "
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(all-the-icons-octicon
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"ellipsis"
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:face 'font-lock-doc-face
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:height 1.1
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:v-adjust 0)
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" ")
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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 (or fe fw) " ")
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(if fe (concat
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(all-the-icons-octicon "circle-slash" :face 'doom-modeline-urgent :height 1.0 :v-adjust 0)
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(propertize " " 'face 'variable-pitch)
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(propertize (format "%d" fe) 'face 'doom-modeline-urgent)
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" "
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))
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(if fw (concat
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(all-the-icons-octicon "alert" :face 'doom-modeline-warning :height 0.9 :v-adjust 0)
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(propertize " " 'face 'variable-pitch)
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(propertize (format "%d" fw) 'face 'doom-modeline-warning)
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" "
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))
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(if (or fe fw)
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" "
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(when (active)
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(all-the-icons-octicon "check" :height 1.2 :v-adjust -0.06))))))))
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(concat
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" "
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(all-the-icons-octicon "check"
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:face (if (active) 'doom-modeline-info)
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:height 1.2
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: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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(concat
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" "
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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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(let ((sep (propertize " " 'face 'doom-modeline-panel)))
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(concat sep
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(propertize (char-to-string evil-this-macro)
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'face 'doom-modeline-panel)
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sep
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(all-the-icons-octicon "triangle-right"
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:face 'doom-modeline-panel
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:v-adjust -0.05)
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sep))))
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(make-variable-buffer-local 'anzu--state)
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(defun *anzu ()
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"Show the match index and total number thereof. Requires `evil-anzu'."
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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-panel))))
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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-panel))))
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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-panel))))
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(defun *media-info ()
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(cond ((eq major-mode 'image-mode)
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(let ((size (image-size (image-get-display-property) :pixels)))
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(format " %dx%d " (car size) (cdr size))))))
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;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
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(defun doom-modeline (&optional id)
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`(:eval
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(let* ((meta (concat (*macro-recording)
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(*anzu)
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(*evil-substitute)
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(*iedit)))
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(lhs (list (doom-make-xpm (face-background (if (active)
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'doom-modeline-bar
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'doom-modeline-inactive-bar))
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doom-modeline-height
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doom-modeline-bar-width)
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,(unless (eq id 'scratch)
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'(if (and (= (length meta) 0)
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(not doom-ediff-enabled))
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" %I "
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meta))
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" "
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,(cond ((eq id 'scratch)
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'(*buffer-project))
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((eq id 'media)
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'(*media-info))
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(t
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'(list (*buffer-info)
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" %l:%c %p "
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(*selection-info)
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)))))
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(rhs ,(if id
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'(list (*major-mode))
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'(list (*buffer-encoding)
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(*vc)
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(*major-mode)
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(*flycheck)
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)))
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(mid (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 mid rhs))))
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(setq-default mode-line-format (doom-modeline))
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(add-hook! image-mode
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(setq mode-line-format (doom-modeline 'media)))
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;;
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;; Eldoc-in-mode-line support (for `eval-expression')
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;;
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(defun doom-eldoc-modeline ()
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`(:eval
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(list (list ,(when window-system
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`(doom-make-xpm (face-background 'doom-modeline-eldoc-bar)
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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)
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(mode-line-format (or (and str (doom-eldoc-modeline))
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mode-line-format))
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roll mode-line-in-non-selected-windows)
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(catch 'break
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(if (and (> len max) eldoc-mode-line-rolling-flag)
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(progn
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(while (setq roll (sit-for 0.3))
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(setq tmp-str (substring tmp-str 2)
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mode-line-format (concat tmp-str " [<]" str))
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(force-mode-line-update)
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(when (< (length tmp-str) 2) (setq tmp-str str)))
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(unless roll
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(when eldoc-mode-line-stop-rolling-on-input
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(setq eldoc-mode-line-rolling-flag nil))
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(throw 'break nil)))
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(force-mode-line-update)
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(sit-for eldoc-show-in-mode-line-delay))))
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(force-mode-line-update)))
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;; Show eldoc in the mode-line when using `eval-expression'.
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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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(provide 'core-modeline)
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;;; core-modeline.el ends here
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