#+title: exwm configuration

* Load and basic config
  #+begin_src emacs-lisp
    (defvar jao-exwm--use-afio t)

    (use-package exwm
      :ensure t
      :init (setq exwm-workspace-number 1
                  exwm-workspace-show-all-buffers t
                  exwm-workspace-warp-cursor nil
                  exwm-layout-show-all-buffers t
                  exwm-floating-border-color
                  (if (jao-colors-scheme-dark-p) "black" "grey90")))

    (use-package exwm-edit :ensure t)
    (require 'exwm)
  #+end_src
* Frames as workspaces
  #+begin_src emacs-lisp
    (defun jao-exwm--new-frame-p ()
      (not (frame-parameter nil 'jao-frames-initialized)))

    (defun jao-exwm--mark-frame (force)
      (prog1 (or force (jao-exwm--new-frame-p))
        (set-frame-parameter nil 'jao-frames-initialized t)))

    (defun jao-exwm--goto-main (&optional init)
      (interactive "P")
      (exwm-workspace-switch-create 1)
      (when (jao-exwm--mark-frame init) (jao-trisect)))

    (defun jao-exwm--goto-mail (&optional init)
      (interactive "P")
      (exwm-workspace-switch-create 2)
      (when (jao-exwm--mark-frame init)
        (jao-afio-open-gnus)))

    (defun jao-exwm--goto-w3m (&optional init)
      (interactive "P")
      (exwm-workspace-switch-create 5)
      (when (jao-exwm--mark-frame init)
        (jao-afio-open-w3m)
        (let ((scroll-bar-mode 'left))
          (toggle-scroll-bar 1)
          (set-frame-parameter (window-frame) 'scroll-bar-width 12))
        (jao-toggle-inactive-mode-line)))

    (defun jao-exwm--goto-docs (&optional init)
      (interactive "P")
      (exwm-workspace-switch-create 4)
      (when (jao-exwm--mark-frame init)
        (jao-afio-open-doc)))

    (defun jao-exwm-open-doc (file)
      (jao-exwm--goto-docs)
      (jao-find-or-open file))

    (defun jao-exwm-no-afio-setup ()
      (interactive)
      (defalias 'jao-open-gnus-frame 'jao-exwm--goto-mail)
      (defalias 'jao-goto-w3m-frame 'jao-exwm--goto-w3m)
      (setq jao-open-doc-fun #'jao-exwm-open-doc)
      (setq minibuffer-follows-selected-frame t)
      (global-set-key "\C-cf" 'jao-exwm--goto-main)
      (global-set-key "\C-cg" 'jao-exwm--goto-mail)
      (global-set-key "\C-cw" 'jao-exwm--goto-w3m)
      (global-set-key "\C-cz" 'jao-exwm--goto-docs))

    (if jao-exwm--use-afio
        (setq minibuffer-follows-selected-frame nil)
      (jao-exwm-no-afio-setup))
  #+end_src
* Tracking
  #+begin_src emacs-lisp
    (add-hook 'exwm-workspace-switch-hook 'tracking-remove-visible-buffers)
  #+end_src
* Buffer titles
  #+BEGIN_SRC emacs-lisp
    (defun jao-exwm--use-title-p ()
      (or (string-prefix-p "sun-awt-X11-" exwm-instance-name)
          (string= "Navigator" exwm-instance-name)
          (string= "Spotify" exwm-class-name)
          (string= "XTerm" exwm-class-name)
          (string= "Zathura" exwm-class-name)))

    (defun jao-exwm-rename-buffer/class ()
      (unless (jao-exwm--use-title-p)
        (exwm-workspace-rename-buffer exwm-class-name)))

    (defun jao-exwm-rename-buffer/title ()
      (cond ((or (not exwm-instance-name)
                 (jao-exwm--use-title-p))
             (exwm-workspace-rename-buffer exwm-title))
            ((string= "Zathura" exwm-class-name)
             (exwm-workspace-rename-buffer
              (format "zathura: %s" (file-name-nondirectory exwm-title))))))

    (defun jao-exwm--set-exwm-name ()
      (when (not jao-exwm--name)
        (setq jao-exwm--name jao-exwm--current-name
              jao-exwm--current-name nil)))

    (add-hook 'exwm-mode-hook 'jao-exwm--set-exwm-name)
    (add-hook 'exwm-update-class-hook 'jao-exwm-rename-buffer/class)
    (add-hook 'exwm-update-title-hook 'jao-exwm-rename-buffer/title)
  #+END_SRC
* Float windows
  #+begin_src emacs-lisp
    (defvar jao-exwm-max-x (x-display-pixel-width))
    (defvar jao-exwm-max-y (x-display-pixel-height))

    (defun jao-exwm--float-to (x y &optional w h)
      (let* ((w (or w (frame-pixel-width)))
             (h (or h (frame-pixel-height)))
             (x (if (< x 0) (- jao-exwm-max-x (- x) w) x))
             (y (if (< y 0) (- jao-exwm-max-y (- y) h) y))
             (p (or (frame-parameter nil 'jao-position) (frame-position))))
        (exwm-floating-move (- x (car p)) (- y (cdr p)))
        (exwm-layout-enlarge-window-horizontally (- w (frame-pixel-width)))
        (exwm-layout-enlarge-window (- h (frame-pixel-height)))
        (set-frame-parameter nil 'jao-position (cons x y))))

    (defun jao-exwm--center-float (&optional w h)
      (interactive)
      (let* ((mx jao-exwm-max-x)
             (my jao-exwm-max-y)
             (w (or w (frame-pixel-width)))
             (h (or h (/ (* w my) mx))))
        (jao-exwm--float-to (/ (- mx w) 2) (/ (- my h) 2) w h)))

    (defun jao-exwm--setup-float ()
      (set-frame-parameter nil 'jao-position nil)
      (cond ((string= "Firefox" exwm-class-name)
             (jao-exwm--center-float 900 600))
            ((member exwm-class-name '("mpv" "vlc"))
             (jao-exwm--center-float 1200))))

    (defvar jao-exwm-floating-classes '("mpv" "vlc"))

    (defun jao-exwm--maybe-float ()
      (when (member exwm-class-name jao-exwm-floating-classes)
        (when (not exwm--floating-frame)
          (exwm-floating-toggle-floating))))

    (add-hook 'exwm-floating-setup-hook #'jao-exwm--setup-float)
    (add-hook 'exwm-manage-finish-hook #'jao-exwm--maybe-float)

#+end_src
* Minibuffer and system tray
    #+BEGIN_SRC emacs-lisp
      (require 'exwm-systemtray)
      (setq exwm-systemtray-height 14)
      (exwm-systemtray-enable)

      (setq jao-minibuffer-frame-width 271)
      (add-hook 'exwm-workspace-switch-hook #'jao-minibuffer-refresh)

      (defun jao-exwm--watch-tray (sym newval op where)
        (setq jao-minibuffer-right-margin (* 2 (length newval)))
        (jao-minibuffer-refresh))
      (add-variable-watcher 'exwm-systemtray--list #'jao-exwm--watch-tray)
#+END_SRC
* Switch to buffer / app
  #+begin_src emacs-lisp
    (defvar-local jao-exwm--name nil)
    (defvar jao-exwm--current-name nil)

    (defun jao-exwm--check-name (name)
      (or (equalp jao-exwm--name name)
          (equalp (buffer-name) name)
          (equalp exwm-class-name name)
          (equalp exwm-title name)))

    (defun jao-exwm-switch-to-class/title (cln)
      (interactive)
      (when cln
        (if (jao-exwm--check-name cln)
            (current-buffer)
          (let ((bfs (seq-filter `(lambda (b)
                                    (and (not (eq b ,(current-buffer)))
                                         (with-current-buffer b
                                           (jao-exwm--check-name ,cln))))
                                 (buffer-list))))
            (when (car bfs) (pop-to-buffer (car (reverse bfs))))))))

    (defun jao-exwm-switch-to-next-class ()
      (interactive)
      (jao-exwm-switch-to-class/title exwm-class-name))

    (defun jao-exwm-switch-to-next-x ()
      (interactive)
      (let ((bfs (seq-filter (lambda (b) (buffer-local-value 'exwm-class-name b))
                             (buffer-list (window-frame)))))
        (when (car bfs) (switch-to-buffer (car (reverse bfs))))))

  #+end_src
* App runners
  #+BEGIN_SRC emacs-lisp
    (defun jao-exwm-run (command)
      (interactive
       (list (read-shell-command "$ "
                                 (if current-prefix-arg
                                     (cons (concat " " (buffer-file-name)) 0)
                                   ""))))
      (setq jao-exwm--current-name nil)
      (start-process-shell-command command nil command))

    (defmacro jao-exwm-runner (&rest args)
      `(lambda () (interactive) (start-process "" nil ,@args)))

    (defun jao-exwm-workspace (n)
      (if jao-exwm--use-afio
          (cl-case n
            ((1) (jao-afio--goto-main))
            ((2) (jao-afio--goto-gnus))
            ((3) (jao-afio--goto-w3m))
            ((4) (jao-afio--goto-docs))
            ((5) (jao-afio--goto-scratch-1))
            ((0) (jao-afio--goto-scratch)))
        (exwm-workspace-switch-create n)))

    (defmacro jao-def-runner (name ws class &rest args)
      `(defun ,name (&rest other-args)
         (interactive)
         ,@(when ws `((jao-exwm-workspace ,ws)))
         (if (jao-exwm-switch-to-class/title ,class)
             ,(or (stringp (car args)) args)
           (setq jao-exwm--current-name ,class)
           ,(if (stringp (car args))
                `(start-process-shell-command ,(car args)
                                              "* exwm - console *"
                                              (string-join (append (list ,@args)
                                                                   other-args)
                                                           " "))
              args))))

    (jao-def-runner jao-exwm-spotify 6 "Spotify" "spotify")
    (jao-def-runner jao-exwm-spt 6 "spt" "xterm" "-e" "spt")

    (jao-def-runner jao-exwm-firefox 5 "Firefox" "firefox")

    (defun jao-exwm-firefox-1 ()
      (interactive)
      (jao-exwm-firefox)
      (delete-other-windows))

    (jao-def-runner jao-exwm-vlc 4 "VLC" "vlc")

    (jao-def-runner jao-exwm-slack 0 "Slack" "slack")
    (jao-def-runner jao-exwm-signal 0 "Signal" "signal-desktop")

    (jao-def-runner jao-exwm-proton-bridge 0 "*proton-bridge*" "protonmail-bridge")
    (jao-def-runner jao-exwm-htop 0 "htop-xterm"
                    "xterm" "-title" "htop-xterm" "-e" "htop")

    (jao-def-runner jao-exwm-aptitude 0 "aptitude-xterm"
                    "xterm" "-title" "aptitude-xterm" "-e" "aptitude")
    (jao-def-runner jao-exwm-blueman 0 "Blueman-manager" "blueman-manager")
    (jao-def-runner jao-exwm-ncmpcpp 0 "ncmpcpp" "xterm" "-e" "ncmpcpp" "-p" "6669")

    (jao-def-runner jao-exwm-proton-vpn 0 "*pvpn*" proton-vpn-status)
    (jao-def-runner jao-exwm-enwc 0 "*ENWC*" enwc)
    (jao-def-runner jao-exwm-bluetooth 0 "*Bluetooth*" bluetooth-list-devices)
    (jao-def-runner jao-exwm-paradox 0 "*Packages*" paradox-list-packages nil)
    (jao-def-runner jao-exwm-proced 0 "*Proced*" proced)

    (defun jao-exwm-kill-xmobar ()
      (interactive)
      (shell-command "killall xmobar-exwm"))

    (defun jao-exwm-xmobar ()
      (interactive)
      (jao-exwm-kill-xmobar)
      (start-process "" nil "xmobar-exwm" "-d"))

    (jao-def-runner jao-exwm-open-with-zathura nil nil "zathura" (buffer-file-name))
    (jao-def-runner jao-exwm-open-with-mupdf nil nil "mupdf" (buffer-file-name))
    (jao-def-runner jao-exwm-xterm 0 nil "xterm")

    (defun jao-exwm-import-screen (&optional area)
      (interactive "P")
      (when (not (file-directory-p "/tmp/screenshot"))
        (make-directory "/tmp/screenshot"))
      (let ((c (format "import %s %s"
                       (if area "" "-window root")
                       "/tmp/screenshot/$(date +'%g%m%d-%H%M%S').png")))
        (start-process-shell-command "import" "* exwm - console *" c)))

  #+END_SRC
* Zathura support
  #+begin_src emacs-lisp
    (defun jao-zathura--buffers ()
      (seq-filter (lambda (b)
                    (string= "Zathura"
                             (or (buffer-local-value 'exwm-class-name b) "")))
                  (buffer-list)))

    (defun jao-zathura--file-info (b)
      (with-current-buffer b
        (when (string-match "\\(.+\\) \\[\\(.+\\) (\\([0-9]+\\)/\\([0-9]+\\))\\]"
                            (or exwm-title ""))
          (list (expand-file-name (match-string 1 exwm-title))
                (string-to-number (match-string 3 exwm-title))
                (string-to-number (match-string 4 exwm-title))
                (match-string 2 exwm-title)))))

    (defun jao-exwm--send-str (str)
      (dolist (k (string-to-list (kbd str)))
        (exwm-input--fake-key k)))

    (defun jao-zathura-open-doc (file-name &optional page-no height)
      (let* ((file-name (expand-file-name file-name))
             (buffer (seq-find `(lambda (b)
                                    (string= ,file-name
                                             (car (jao-zathura--file-info b))))
                               (jao-zathura--buffers))))
        (if jao-exwm--use-afio (jao-afio--goto-docs) (jao-exwm--goto-docs))
        (if (not buffer)
            (jao-exwm-run (if page-no
                              (format "zathura -P %s %s" page-no file-name)
                            (format "zathura %s" file-name)))
          (pop-to-buffer buffer)
          (jao-exwm--send-str (format "%sg" page-no)))))

    (defun jao-exwm-pdf-zathura-close-all ()
      (interactive)
      (dolist (b (jao-zathura--buffers))
        (ignore-errors (with-current-buffer b (jao-exwm--send-str "q"))))
      t)

    (defun jao-exwm-pdf-goto-org (&optional arg)
      (interactive "P")
      (when-let ((info (jao-zathura--file-info (current-buffer))))
        (when-let ((file (jao-org-pdf-to-org-file (car info))))
          (let ((newp (not (file-exists-p file))))
            (when (or arg newp) (org-store-link nil t))
            (find-file-other-window file)
            (when newp
              (jao-org-insert-doc-skeleton)
              (org-insert-link))))))

    (defun jao-exwm-pdf-goto-org* ()
      (interactive)
      (jao-exwm-pdf-goto-org t))

    (defun jao-exwm-org-store-zathura-link ()
      (when-let ((info (jao-zathura--file-info (current-buffer))))
        (jao-org-links-store-pdf-link (car info)
                                      (cadr info)
                                      (jao-org--pdf-title (car info)))))

    (defun jao-exwm-pdf-enable-zathura ()
      (interactive)
      (add-hook 'kill-emacs-query-functions #'jao-exwm-pdf-zathura-close-all)
      (setq jao-org-open-pdf-fun #'jao-zathura-open-doc)
      (setq jao-org-links-pdf-store-fun #'jao-exwm-org-store-zathura-link)
      (setq jao-open-doc-fun #'jao-zathura-open-doc))

    (defun jao-exwm-pdf-disable-zathura ()
      (interactive)
      (remove-hook 'kill-emacs-query-functions #'jao-exwm-pdf-zathura-close-all)
      (setq jao-org-open-pdf-fun #'jao-afio-open-pdf)
      (setq jao-org-links-pdf-store-fun nil)
      (setq jao-open-doc-fun #'jao-find-or-open))

    (when (not jao-browse-doc-use-emacs-p)
      (jao-exwm-pdf-enable-zathura))

  #+end_src
* Hydras
  #+begin_src emacs-lisp
    (major-mode-hydra-define pdf-view-mode nil
      ("Elsewhere"
       (("b" (jao-buffer-same-mode 'pdf-view-mode) "other PDFs")
        ("o" jao-org-pdf-goto-org "notes file")
        ("O" (jao-org-pdf-goto-org 4) "notes file, linking"))
       "External"
       (("p" doc-view-presentation "presentation")
        ("z" jao-exwm-open-with-zathura "open with zathura")
        ("m" jao-exwm-open-with-mupdf "open with mupdf"))))

    (defhydra jao-hydra-float (:color blue)
      "Float"
      ("f" exwm-floating-toggle-floating "float")
      ("F" exwm-layout-toggle-fullscreen "full")
      ("tl" (jao-exwm--float-to 20 20))
      ("tr" (jao-exwm--float-to -20 20))
      ("bl" (jao-exwm--float-to 20 -20))
      ("br" (jao-exwm--float-to -20 -20))
      ("c" jao-exwm--center-float)
      ("k" (exwm-floating-move 0 -5) :color red)
      ("j" (exwm-floating-move 0 5) :color red)
      ("h" (exwm-floating-move -5 0) :color red)
      ("l" (exwm-floating-move 5 0) :color red)
      ("K" (exwm-layout-enlarge-window 5) :color red)
      ("J" (exwm-layout-enlarge-window -5) :color red)
      ("H" (exwm-layout-enlarge-window 5 t) :color red)
      ("L" (exwm-layout-enlarge-window -5 t) :color red)
      ("q" nil ""))

    (pretty-hydra-define jao-hydra-exwm-misc (:color blue :quit-key "q")
      ("Jump around"
       (("s" jao-slack-download "slack downloads")
        ("h" (jao-buffer-same-mode 'helpful) "helpful buffer")
        ("g" exwm-workspace-switch nil))
       "X-Windows"
       (("f" exwm-floating-toggle-floating "toggle floating window")
        ("F" exwm-layout-toggle-fullscreen "toggle fullscreen mode")
        ("m" exwm-workspace-move-window nil))
       "Zathura"
       (("o" jao-exwm-pdf-goto-org "Go to org notes")
        ("O" (jao-exwm-pdf-goto-org t) "Go to org notes, linking"))
       "Exwm utilities"
       (("k" exwm-input-release-keyboard "release keyboard")
        ("x" exwm-reset "reset exwm"))))

    (pretty-hydra-define jao-hydra-exwm
      (global-map "s-w" :color blue :quit-key "q")
      ("Notes"
       (("n" jao-org-notes-open-or-create "capture note")
        ("N" jao-org-notes-open "go to note"))
       "Packages"
       (("a" jao-vterm-aptitude "aptitude")
        ("l" jao-exwm-paradox "package list")
        ("s-w" jao-hydra-exwm/body nil))
       "Network"
       (("s" jao-ssh "ssh")
        ("b" jao-exwm-bluetooth "bluetooth")
        ;; ("N" jao-exwm-enwc "networks")
        )
       "Proton"
       (("v" jao-exwm-proton-vpn "proton vpn")
        ("m" run-proton-bridge "proton bridge"))
       "Monitors"
       (("p" jao-vterm-htop "htop")
        ("P" jao-exwm-proced "proced")
        ("t" jao-time-echo-times "current time"))
       "Apps"
       (("f" jao-exwm-firefox-1 "firefox")
        ("x" jao-exwm-xmobar "restart xmobar")
        ("X" jao-exwm-kill-xmobar "kill xmobar"))
       "Looks"
       (("T" jao-toggle-transparency "toggle transparency"
         :toggle (jao-transparent-p) :color red)
        ("w" jao-set-wallpaper "set wallpaper")
        ("W" jao-set-random-wallpaper "set radom wallpaper"))
       "Helpers"
       (("r" org-reveal "org reveal")
        ("k" jao-kb-toggle "toggle keyboard"
         :toggle (jao-kb-toggled-p) :color red)
        ("M" jao-minibuffer-toggle "toggle minibuffer"
         :toggle jao-minibuffer-enabled-p))))
  #+end_src
* Keybindings
  #+BEGIN_SRC emacs-lisp
    (define-key exwm-mode-map [?\C-q] #'exwm-input-send-next-key)
    (define-key exwm-mode-map [?\s-f] #'jao-hydra-float/body)
    (define-key exwm-mode-map [?\s-m] #'jao-hydra-media/body)
    (define-key exwm-mode-map [?\s-s] #'jao-hydra-spotify/body)
    (define-key exwm-mode-map [?\s-w] #'jao-hydra-exwm/body)
    (define-key exwm-mode-map [?\s-p] #'jao-exwm-pdf-goto-org)
    (define-key exwm-mode-map [?\s-P] #'jao-exwm-pdf-goto-org*)

    (setq
     exwm-input-global-keys
     '(([?\s-0] . jao-afio--goto-scratch)
       ([?\s-1] . jao-afio--goto-main)
       ([?\s-2] . jao-afio--goto-gnus)
       ([?\s-3] . jao-afio--goto-w3m)
       ([?\s-4] . jao-afio--goto-docs)
       ([?\s-A] . org-agenda-list)
       ([?\s-a] . jao-first-window)
       ([?\s-b] . jao-hydra-org-blog/body)
       ([?\s-c] . jao-hydra-chats/body)
       ([?\s-e] . jao-exwm-firefox-1)
       ([?\s-t] . jao-vterm-here-toggle)
       ([?\s-n] . jao-hydra-ednc/body)
       ([?\s-O] . ace-swap-window)
       ([?\s-o] . ace-window)
       ([?\s-x] . jao-hydra-exwm-misc/body)
       ([?\s-z] . jao-hydra-sleep/body)
       ([XF86AudioMute] . jao-mixer-master-toogle)
       ([XF86AudioPlay] . jao-player-toggle)
       ([XF86AudioPause] . jao-player-toggle)
       ([XF86AudioNext] . jao-player-next)
       ([XF86AudioPrev] . jao-player-previous)
       ([XF86AudioRaiseVolume] . jao-mixer-master-up)
       ([XF86AudioLowerVolume] . jao-mixer-master-down)
       ([XF86MonBrightnessUp] . jao-bright-up)
       ([XF86MonBrightnessDown] . jao-bright-down)
       ([?\s-\`] . jao-exwm-switch-to-next-x)
       ([s-tab] . jao-exwm-switch-to-next-class)
       ([print] . jao-exwm-import-screen)
       ([f5] . jao-weather)
       ([f6] . jao-bright-show)
       ([f7] . jao-toggle-audio-applet)
       ([f8] . jao-toggle-nm-applet)))

    (when (eq 'counsel jao-completion-engine)
      (add-to-list 'exwm-input-global-keys '([?\s-r] . counsel-linux-app)))

    ;; (customize-set-variable 'exwm-input-global-keys exwm-input-global-keys)

  #+END_SRC