exwm lib

1 files changed, 199 insertions, 0 deletions

diff --git a/lib/wm/jao-exwm.el b/lib/wm/jao-exwm.el
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+;;; jao-exwm.el --- exwm utilities                   -*- lexical-binding: t; -*-
+
+;; Copyright (C) 2026  jao
+
+;; Author: jao <mail@jao.io>
+
+;; This program is free software; you can redistribute it and/or modify
+;; it under the terms of the GNU General Public License as published by
+;; the Free Software Foundation, either version 3 of the License, or
+;; (at your option) any later version.
+
+;; This program is distributed in the hope that it will be useful,
+;; but WITHOUT ANY WARRANTY; without even the implied warranty of
+;; MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+;; GNU General Public License for more details.
+
+;; You should have received a copy of the GNU General Public License
+;; along with this program.  If not, see <https://www.gnu.org/licenses/>.
+
+(require 'jao-minibuffer)
+
+;;; Helpers
+(defvar jao-exwm-use-afio t)
+
+(defun jao-exwm-send-str (str)
+  (dolist (k (string-to-list str))
+    (exwm-input--fake-key k)))
+
+;;; Minibuffer and system tray
+(setq jao-minibuffer-frame-width 271)
+(add-hook 'exwm-workspace-switch-hook #'jao-minibuffer-refresh)
+
+(require 'exwm-systemtray)
+(exwm-systemtray-mode 1)
+
+(defun jao-exwm--watch-tray (sym newval op where)
+  (setq jao-minibuffer-right-margin (/ newval (string-pixel-width "a")))
+  (jao-minibuffer-refresh))
+
+(add-variable-watcher 'exwm-systemtray-width #'jao-exwm--watch-tray)
+
+;;; Buffers
+(defvar-local jao-exwm--name nil)
+(defvar jao-exwm--current-name nil)
+
+(defun jao-exwm--check-name (name)
+  (or (string= jao-exwm--name name)
+      (string= (buffer-name) name)
+      (string= exwm-class-name name)
+      (string= exwm-title name)))
+
+(defun jao-exwm-find-class-buffer (cln)
+  (if (jao-exwm--check-name cln)
+      (current-buffer)
+    (let* ((cur-buff (current-buffer))
+           (bfs (seq-filter (lambda (b)
+                              (and (not (eq b cur-buff))
+                                   (with-current-buffer b
+                                     (jao-exwm--check-name cln))))
+                            (buffer-list))))
+      (when (car bfs) (car (reverse bfs))))))
+
+(defun jao-exwm-switch-to-class/title (cln)
+  (interactive)
+  (when cln
+    (if (jao-exwm--check-name cln)
+        (current-buffer)
+      (when-let* ((b (jao-exwm-find-class-buffer cln)))
+        (pop-to-buffer b)))))
+
+(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)
+                           (with-current-buffer b
+                             (derived-mode-p 'exwm-mode)))
+                         (buffer-list (window-frame)))))
+    (when (car bfs) (switch-to-buffer (car (reverse bfs))))))
+
+;;; Buffer names
+(defun jao-exwm--use-title-p ()
+  (and exwm-title (not (string-blank-p exwm-title))))
+
+(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-minibuffer-refresh)
+(add-hook 'exwm-update-title-hook 'jao-exwm-rename-buffer/title)
+
+;;; Float windows
+(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 ((member exwm-class-name '("firefox" "Firefox" "Sofice"))
+         (jao-exwm--center-float 900 600))
+        ((member exwm-class-name '("mpv" "vlc"))
+         (jao-exwm--center-float 1200))))
+
+(defvar jao-exwm-floating-classes '("mpv" "vlc"))
+(setq jao-exwm-floating-classes nil)
+
+(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)
+
+;;; App runners
+;;; App runner helpers
+(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
+      (jao-afio-goto-nth n)
+    (exwm-workspace-switch-create n)))
+
+(defmacro jao-def-exwm-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)
+         ,(cond ((equal ws -1) '(delete-other-windows))
+                ((stringp (car args)) (cdr args))
+                (t 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))))
+
+(defmacro jao-def-exwm-toggler (name ws class &rest args)
+  (let ((toggler (intern (format "%s*" name)))
+        (arg (gensym)))
+    `(progn (jao-def-exwm-runner ,name ,ws ,class ,@args)
+            (defun ,toggler (,arg)
+              (interactive "P")
+              (if (and (not ,arg) (equal exwm-class-name ,class))
+                  (jao-afio-toggle)
+                (,name))))))
+
+
+
+(provide 'jao-exwm)
+;;; jao-exwm.el ends here