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GNU GENERAL PUBLIC LICENSE
Version 3, 29 June 2007
Copyright (C) 2007 Free Software Foundation, Inc. <http://fsf.org/>
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How to Apply These Terms to Your New Programs
If you develop a new program, and you want it to be of the greatest
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To do so, attach the following notices to the program. It is safest
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<one line to give the program's name and a brief idea of what it does.>
Copyright (C) <year> <name of author>
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
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This program is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
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Also add information on how to contact you by electronic and paper mail.
If the program does terminal interaction, make it output a short
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<program> Copyright (C) <year> <name of author>
This program comes with ABSOLUTELY NO WARRANTY; for details type `show w'.
This is free software, and you are welcome to redistribute it
under certain conditions; type `show c' for details.
The hypothetical commands `show w' and `show c' should show the appropriate
parts of the General Public License. Of course, your program's commands
might be different; for a GUI interface, you would use an "about box".
You should also get your employer (if you work as a programmer) or school,
if any, to sign a "copyright disclaimer" for the program, if necessary.
For more information on this, and how to apply and follow the GNU GPL, see
<http://www.gnu.org/licenses/>.
The GNU General Public License does not permit incorporating your program
into proprietary programs. If your program is a subroutine library, you
may consider it more useful to permit linking proprietary applications with
the library. If this is what you want to do, use the GNU Lesser General
Public License instead of this License. But first, please read
<http://www.gnu.org/philosophy/why-not-lgpl.html>.

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Emacs X Window Manager
======================
EXWM (Emacs X Window Manager) turns Emacs into a full-featured tiling X window
manager. Please refer to "exwm.el" for more details.
EXWM is built on top of XELB and its utility libraris:
+ XELB: https://github.com/ch11ng/xelb
+ XELB utilility libraries: https://github.com/ch11ng/xelb-util
You may also be intrested in an input method server designed for EXWM:
+ EXIM: https://github.com/ch11ng/exim

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;;; exwm-floating.el --- Floating Module for EXWM -*- lexical-binding: t -*-
;; Copyright (C) 2015 Chris Feng
;; Author: Chris Feng <chris.w.feng@gmail.com>
;; Keywords: unix
;; This file is not part of GNU Emacs.
;; This file 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 file 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 file. If not, see <http://www.gnu.org/licenses/>.
;;; Commentary:
;; This module deals with the conversion between floating and non-floating
;; states and implements moving/resizing operations on floating windows.
;; Todo:
;; + move/resize with keyboard.
;;; Code:
(require 'xcb-cursor)
(defvar exwm-floating-border-width 1 "Border width of the floating window.")
(defvar exwm-floating-border-color "blue"
"Border color of the floating window.")
(defun exwm-floating--set-floating (id)
"Make window ID floating."
(interactive)
(setq exwm-input--focus-lock t)
(when (get-buffer-window (exwm--id->buffer id)) ;window in non-floating state
(set-window-buffer (selected-window) (other-buffer))) ;hide it first
(let* ((original-frame
(with-current-buffer (exwm--id->buffer id)
(if (and exwm-transient-for (exwm--id->buffer exwm-transient-for))
;; Place a modal in the same workspace with its leading window
(with-current-buffer (exwm--id->buffer exwm-transient-for)
exwm--frame)
;; Fallback to current workspace
exwm-workspace--current)))
(original-id (frame-parameter original-frame 'exwm-window-id))
;; Create new frame
(frame (with-current-buffer "*scratch*"
(make-frame `((minibuffer . nil) ;use the one on workspace
(background-color
. ,exwm-floating-border-color)
(internal-border-width
. ,exwm-floating-border-width)
(unsplittable . t))))) ;and fix the size later
(frame-id (string-to-int (frame-parameter frame 'window-id)))
(outer-id (string-to-int (frame-parameter frame 'outer-window-id)))
(window (frame-first-window frame)) ;and it's the only window
(x (slot-value exwm--geometry 'x))
(y (slot-value exwm--geometry 'y))
(width (slot-value exwm--geometry 'width))
(height (slot-value exwm--geometry 'height)))
;; Save window IDs
(set-frame-parameter frame 'exwm-window-id frame-id)
(set-frame-parameter frame 'exwm-outer-id outer-id)
;; Set urgency flag if it's not appear in the active workspace
(let ((idx (cl-position original-frame exwm-workspace--list)))
(when (/= idx exwm-workspace-current-index)
(set-frame-parameter original-frame 'exwm--urgency t)
(exwm-workspace--update-switch-history)))
;; Fix illegal parameters
;; FIXME: check normal hints restrictions
(let* ((display-width (x-display-pixel-width))
(display-height (- (x-display-pixel-height)
(window-pixel-height (minibuffer-window
original-frame))
(* 2 (window-mode-line-height))
(window-header-line-height window)
(* 2 exwm-floating-border-width)))
(display-height (* 2 (/ display-height 2)))) ;round to even
(if (> width display-width)
;; Too wide
(progn (setq x 0
width display-width))
;; Invalid width
(when (= 0 width) (setq width (/ display-width 2)))
;; Completely outsize
(when (or (> x display-width) (> 0 (+ x display-width)))
(setq x (/ (- display-width width) 2))))
(if (> height display-height)
;; Too tall
(setq y 0
height display-height)
;; Invalid height
(when (= 0 height) (setq height (/ display-height 2)))
;; Completely outside
(when (or (> y display-height) (> 0 (+ y display-height)))
(setq y (/ (- display-height height) 2)))))
;; Set OverrideRedirect on this frame
(xcb:+request exwm--connection
(make-instance 'xcb:ChangeWindowAttributes
:window outer-id :value-mask xcb:CW:OverrideRedirect
:override-redirect 1))
;; Set event mask
(xcb:+request exwm--connection
(make-instance 'xcb:ChangeWindowAttributes
:window frame-id :value-mask xcb:CW:EventMask
:event-mask xcb:EventMask:SubstructureRedirect))
;; Reparent this frame to the original one
(xcb:+request exwm--connection
(make-instance 'xcb:ReparentWindow
:window outer-id :parent original-id
:x (- x exwm-floating-border-width)
:y (- y exwm-floating-border-width)))
;; Save the geometry
;; Rationale: the frame will not be ready for some time, thus we cannot
;; infer the correct window size from its geometry.
(with-current-buffer (exwm--id->buffer id)
(setq exwm--floating-edges
(vector exwm-floating-border-width exwm-floating-border-width
(+ width exwm-floating-border-width)
(+ height exwm-floating-border-width))))
;; Fit frame to client
(xcb:+request exwm--connection
(make-instance 'xcb:ConfigureWindow
:window outer-id
:value-mask (logior xcb:ConfigWindow:Width
xcb:ConfigWindow:Height
xcb:ConfigWindow:StackMode)
:width (+ width (* 2 exwm-floating-border-width))
:height (+ height (* 2 exwm-floating-border-width)
(window-mode-line-height)
(window-header-line-height))
:stack-mode xcb:StackMode:Above)) ;top-most
;; Reparent window to this frame
(xcb:+request exwm--connection
(make-instance 'xcb:ChangeWindowAttributes
:window id :value-mask xcb:CW:EventMask
:event-mask xcb:EventMask:NoEvent))
(xcb:+request exwm--connection
(make-instance 'xcb:ReparentWindow
:window id :parent frame-id
:x exwm-floating-border-width
:y exwm-floating-border-width))
(xcb:+request exwm--connection
(make-instance 'xcb:ChangeWindowAttributes
:window id :value-mask xcb:CW:EventMask
:event-mask exwm--client-event-mask))
(xcb:flush exwm--connection)
;; Set window/buffer
(with-current-buffer (exwm--id->buffer id)
(setq window-size-fixed t ;make frame fixed size
exwm--frame original-frame
exwm--floating-frame frame)
(set-window-buffer window (current-buffer)) ;this changes current buffer
(set-window-dedicated-p window t))
(with-current-buffer (exwm--id->buffer id)
;; Some window should not get input focus on creation
;; FIXME: other conditions?
(unless (memq xcb:Atom:_NET_WM_WINDOW_TYPE_UTILITY exwm-window-type)
(x-focus-frame exwm--floating-frame)
(exwm-input--set-focus id)))
(setq exwm-input--focus-lock nil)))
(defun exwm-floating--unset-floating (id)
"Make window ID non-floating."
(interactive)
(setq exwm-input--focus-lock t)
(let ((buffer (exwm--id->buffer id)))
;; Reparent to workspace frame
(xcb:+request exwm--connection
(make-instance 'xcb:ChangeWindowAttributes
:window id :value-mask xcb:CW:EventMask
:event-mask xcb:EventMask:NoEvent))
(xcb:+request exwm--connection
(make-instance 'xcb:ReparentWindow
:window id
:parent (frame-parameter exwm-workspace--current
'exwm-window-id)
:x 0 :y 0)) ;temporary position
(xcb:+request exwm--connection
(make-instance 'xcb:ChangeWindowAttributes
:window id :value-mask xcb:CW:EventMask
:event-mask exwm--client-event-mask))
(xcb:flush exwm--connection)
(with-current-buffer buffer
(when exwm--floating-frame ;from floating to non-floating
(setq exwm--floating-edges nil) ;invalid by now
(set-window-dedicated-p (frame-first-window exwm--floating-frame) nil)
(delete-frame exwm--floating-frame))) ;remove the floating frame
(with-current-buffer buffer
(setq exwm--floating-frame nil
exwm--frame exwm-workspace--current))
(select-frame exwm-workspace--current t)
(set-window-buffer nil buffer)
(exwm-layout--show id)
(exwm-input--set-focus id))
(setq exwm-input--focus-lock nil))
(defun exwm-floating-toggle-floating ()
"Toggle the current window between floating and non-floating states."
(interactive)
(with-current-buffer (window-buffer)
(if exwm--floating-frame
(exwm-floating--unset-floating exwm--id)
(exwm-floating--set-floating exwm--id))))
(defvar exwm-floating--moveresize-id nil)
(defvar exwm-floating--moveresize-type nil)
(defvar exwm-floating--moveresize-delta nil)
(defun exwm-floating--start-moveresize (id &optional type)
"Start move/resize."
(let ((buffer (exwm--id->buffer id))
frame frame-id cursor)
(when (and buffer
(setq frame (with-current-buffer buffer exwm--floating-frame))
(setq frame-id (frame-parameter frame 'exwm-outer-id))
;; Test if the pointer can be grabbed
(= xcb:GrabStatus:Success
(slot-value
(xcb:+request-unchecked+reply exwm--connection
(make-instance 'xcb:GrabPointer
:owner-events 0 :grab-window frame-id
:event-mask xcb:EventMask:NoEvent
:pointer-mode xcb:GrabMode:Async
:keyboard-mode xcb:GrabMode:Async
:confine-to xcb:Window:None
:cursor xcb:Cursor:None
:time xcb:Time:CurrentTime))
'status)))
(setq exwm--floating-edges nil) ;invalid by now
(with-slots (root-x root-y win-x win-y)
(xcb:+request-unchecked+reply exwm--connection
(make-instance 'xcb:QueryPointer :window id))
(select-frame-set-input-focus frame) ;raise and focus it
(setq width (frame-pixel-width frame)
height (frame-pixel-height frame))
(unless type
;; Determine the resize type according to the pointer position
;; Clicking the center 1/3 part to resize has not effect
(setq x (/ (* 3 win-x) (float width))
y (/ (* 3 win-y) (float height))
type (cond ((and (< x 1) (< y 1))
xcb:ewmh:_NET_WM_MOVERESIZE_SIZE_TOPLEFT)
((and (> x 2) (< y 1))
xcb:ewmh:_NET_WM_MOVERESIZE_SIZE_TOPRIGHT)
((and (> x 2) (> y 2))
xcb:ewmh:_NET_WM_MOVERESIZE_SIZE_BOTTOMRIGHT)
((and (< x 1) (> y 2))
xcb:ewmh:_NET_WM_MOVERESIZE_SIZE_BOTTOMLEFT)
((< y 1) xcb:ewmh:_NET_WM_MOVERESIZE_SIZE_TOP)
((> x 2) xcb:ewmh:_NET_WM_MOVERESIZE_SIZE_RIGHT)
((> y 2) xcb:ewmh:_NET_WM_MOVERESIZE_SIZE_BOTTOM)
((< x 1) xcb:ewmh:_NET_WM_MOVERESIZE_SIZE_LEFT))))
(when type
(cond ((= type xcb:ewmh:_NET_WM_MOVERESIZE_MOVE)
(setq exwm-floating--moveresize-delta (list win-x win-y 0 0)
cursor exwm-floating--cursor-move))
((= type xcb:ewmh:_NET_WM_MOVERESIZE_SIZE_TOPLEFT)
(setq exwm-floating--moveresize-delta
(list win-x win-y (+ root-x width) (+ root-y height))
cursor exwm-floating--cursor-top-left))
((= type xcb:ewmh:_NET_WM_MOVERESIZE_SIZE_TOP)
(setq exwm-floating--moveresize-delta
(list 0 win-y 0 (+ root-y height))
cursor exwm-floating--cursor-top))
((= type xcb:ewmh:_NET_WM_MOVERESIZE_SIZE_TOPRIGHT)
(setq exwm-floating--moveresize-delta
(list 0 win-y (- root-x width) (+ root-y height))
cursor exwm-floating--cursor-top-right))
((= type xcb:ewmh:_NET_WM_MOVERESIZE_SIZE_RIGHT)
(setq exwm-floating--moveresize-delta
(list 0 0 (- root-x width) 0)
cursor exwm-floating--cursor-right))
((= type xcb:ewmh:_NET_WM_MOVERESIZE_SIZE_BOTTOMRIGHT)
(setq exwm-floating--moveresize-delta
(list 0 0 (- root-x width) (- root-y height))
cursor exwm-floating--cursor-bottom-right))
((= type xcb:ewmh:_NET_WM_MOVERESIZE_SIZE_BOTTOM)
(setq exwm-floating--moveresize-delta
(list 0 0 0 (- root-y height))
cursor exwm-floating--cursor-bottom))
((= type xcb:ewmh:_NET_WM_MOVERESIZE_SIZE_BOTTOMLEFT)
(setq exwm-floating--moveresize-delta
(list win-x 0 (+ root-x width) (- root-y height))
cursor exwm-floating--cursor-bottom-left))
((= type xcb:ewmh:_NET_WM_MOVERESIZE_SIZE_LEFT)
(setq exwm-floating--moveresize-delta
(list win-x 0 (+ root-x width) 0)
cursor exwm-floating--cursor-left)))
;; Select events and change cursor (should always succeed)
(xcb:+request-unchecked+reply exwm--connection
(make-instance 'xcb:GrabPointer
:owner-events 0 :grab-window frame-id
:event-mask (logior xcb:EventMask:ButtonRelease
xcb:EventMask:ButtonMotion)
:pointer-mode xcb:GrabMode:Async
:keyboard-mode xcb:GrabMode:Async
:confine-to xcb:Window:None
:cursor cursor
:time xcb:Time:CurrentTime))
(setq exwm-floating--moveresize-id frame-id
exwm-floating--moveresize-type type))))))
(defun exwm-floating--stop-moveresize (&rest args)
"Stop move/resize."
(xcb:+request exwm--connection
(make-instance 'xcb:UngrabPointer :time xcb:Time:CurrentTime))
(xcb:flush exwm--connection)
(setq exwm-floating--moveresize-id nil
exwm-floating--moveresize-type nil
exwm-floating--moveresize-delta nil))
(defun exwm-floating--do-moveresize (data synthetic)
"Perform move/resize."
(let ((mask 0) (x 0) (y 0) (width 0) (height 0)
(delta exwm-floating--moveresize-delta)
obj root-x root-y)
(when (and exwm-floating--moveresize-id exwm-floating--moveresize-type)
(setq obj (make-instance 'xcb:MotionNotify))
(xcb:unmarshal obj data)
(setq root-x (slot-value obj 'root-x)
root-y (slot-value obj 'root-y))
;; Perform move/resize according to the previously set type
(cond ((= exwm-floating--moveresize-type
xcb:ewmh:_NET_WM_MOVERESIZE_MOVE)
(setq mask (logior xcb:ConfigWindow:X xcb:ConfigWindow:Y)
x (- root-x (elt delta 0))
y (- root-y (elt delta 1))))
((= exwm-floating--moveresize-type
xcb:ewmh:_NET_WM_MOVERESIZE_SIZE_TOPLEFT)
(setq mask
(logior xcb:ConfigWindow:X xcb:ConfigWindow:Y
xcb:ConfigWindow:Width xcb:ConfigWindow:Height)
x (- root-x (elt delta 0))
y (- root-y (elt delta 1))
width (- (elt delta 2) root-x)
height (- (elt delta 3) root-y)))
((= exwm-floating--moveresize-type
xcb:ewmh:_NET_WM_MOVERESIZE_SIZE_TOP)
(setq mask (logior xcb:ConfigWindow:Y xcb:ConfigWindow:Height)
y (- root-y (elt delta 1))
height (- (elt delta 3) root-y)))
((= exwm-floating--moveresize-type
xcb:ewmh:_NET_WM_MOVERESIZE_SIZE_TOPRIGHT)
(setq mask
(logior xcb:ConfigWindow:Y
xcb:ConfigWindow:Width xcb:ConfigWindow:Height)
y (- root-y (elt delta 1))
width (- root-x (elt delta 2))
height (- (elt delta 3) root-y)))
((= exwm-floating--moveresize-type
xcb:ewmh:_NET_WM_MOVERESIZE_SIZE_RIGHT)
(setq mask (logior xcb:ConfigWindow:Width)
width (- root-x (elt delta 2))))
((= exwm-floating--moveresize-type
xcb:ewmh:_NET_WM_MOVERESIZE_SIZE_BOTTOMRIGHT)
(setq mask
(logior xcb:ConfigWindow:Width xcb:ConfigWindow:Height)
width (- root-x (elt delta 2))
height (- root-y (elt delta 3))))
((= exwm-floating--moveresize-type
xcb:ewmh:_NET_WM_MOVERESIZE_SIZE_BOTTOM)
(setq mask (logior xcb:ConfigWindow:Height)
height (- root-y (elt delta 3))))
((= exwm-floating--moveresize-type
xcb:ewmh:_NET_WM_MOVERESIZE_SIZE_BOTTOMLEFT)
(setq mask
(logior xcb:ConfigWindow:X
xcb:ConfigWindow:Width xcb:ConfigWindow:Height)
x (- root-x (elt delta 0))
width (- (elt delta 2) root-x)
height (- root-y (elt delta 3))))
((= exwm-floating--moveresize-type
xcb:ewmh:_NET_WM_MOVERESIZE_SIZE_LEFT)
(setq mask
(logior xcb:ConfigWindow:X xcb:ConfigWindow:Width)
x (- root-x (elt delta 0))
width (- (elt delta 2) root-x))))
(xcb:+request exwm--connection
(make-instance 'xcb:ConfigureWindow
:window exwm-floating--moveresize-id :value-mask mask
:x x :y y :width width :height height))
(xcb:flush exwm--connection))))
;; Cursors for moving/resizing a window
(defvar exwm-floating--cursor-move nil)
(defvar exwm-floating--cursor-top-left nil)
(defvar exwm-floating--cursor-top nil)
(defvar exwm-floating--cursor-top-right nil)
(defvar exwm-floating--cursor-right nil)
(defvar exwm-floating--cursor-bottom-right nil)
(defvar exwm-floating--cursor-bottom nil)
(defvar exwm-floating--cursor-bottom-left nil)
(defvar exwm-floating--cursor-left nil)
(defun exwm-floating--init ()
"Initialize floating module."
;; Initialize cursors for moving/resizing a window
(xcb:cursor:init exwm--connection)
(setq exwm-floating--cursor-move
(xcb:cursor:load-cursor exwm--connection "fleur")
exwm-floating--cursor-top-left
(xcb:cursor:load-cursor exwm--connection "top_left_corner")
exwm-floating--cursor-top
(xcb:cursor:load-cursor exwm--connection "top_side")
exwm-floating--cursor-top-right
(xcb:cursor:load-cursor exwm--connection "top_right_corner")
exwm-floating--cursor-right
(xcb:cursor:load-cursor exwm--connection "right_side")
exwm-floating--cursor-bottom-right
(xcb:cursor:load-cursor exwm--connection "bottom_right_corner")
exwm-floating--cursor-bottom
(xcb:cursor:load-cursor exwm--connection "bottom_side")
exwm-floating--cursor-bottom-left
(xcb:cursor:load-cursor exwm--connection "bottom_left_corner")
exwm-floating--cursor-left
(xcb:cursor:load-cursor exwm--connection "left_side")))
(provide 'exwm-floating)
;;; exwm-floating.el ends here

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;;; exwm-input.el --- Input Module for EXWM -*- lexical-binding: t -*-
;; Copyright (C) 2015 Chris Feng
;; Author: Chris Feng <chris.w.feng@gmail.com>
;; Keywords: unix
;; This file is not part of GNU Emacs.
;; This file 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 file 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 file. If not, see <http://www.gnu.org/licenses/>.
;;; Commentary:
;; This module deals with key/mouse matters, including:
;; + Input focus,
;; + Key/Button event handling,
;; + Key events filtering and simulation.
;; Todo:
;; + Pointer simulation mode (e.g. 'C-c 1'/'C-c 2' for single/double click,
;; move with arrow keys).
;; + Demonstrate how to add a local key binding (add global prefix key and
;; modify `exwm-mode-map').
;; + Simulation keys to mimic Emacs key bindings for text edit (redo, select,
;; cancel, clear, etc). Some of them are not present on common keyboard
;; (keycode = 0). May need to use XKB extension.
;;; Code:
(require 'xcb-keysyms)
(require 'exwm-floating)
(defvar exwm-input-move-event 's-down-mouse-1
"Emacs event to start moving a window.")
(defvar exwm-input-resize-event 's-down-mouse-3
"Emacs event to start resizing a window.")
(defvar exwm-input--move-keysym nil)
(defvar exwm-input--move-mask nil)
(defvar exwm-input--resize-keysym nil)
(defvar exwm-input--resize-mask nil)
(defvar exwm-input--timestamp xcb:Time:CurrentTime
"A recent timestamp received from X server.
It's updated in several occasions, and only used by `exwm-input--set-focus'.")
(defun exwm-input--set-focus (id)
"Set input focus to window ID in a proper way."
(exwm--with-current-id id
(setq exwm-input--focus-id id)
(if (and (not exwm--hints-input)
(memq xcb:Atom:WM_TAKE_FOCUS exwm--protocols))
(xcb:+request exwm--connection
(make-instance 'xcb:icccm:SendEvent
:destination id
:event (xcb:marshal
(make-instance 'xcb:icccm:WM_TAKE_FOCUS
:window id
:time exwm-input--timestamp)
exwm--connection)))
(xcb:+request exwm--connection
(make-instance 'xcb:SetInputFocus
:revert-to xcb:InputFocus:Parent :focus id
:time xcb:Time:CurrentTime)))
(xcb:flush exwm--connection)))
(defvar exwm-input--focus-id xcb:Window:None
"The window that is theoretically focused.")
(defvar exwm-input--focus-lock nil
"Non-nil when input focus should stay unchanged.")
(defun exwm-input--update-focus ()
"Update input focus."
(unless exwm-input--focus-lock
(setq exwm-input--focus-lock t)
(when (eq (current-buffer) (window-buffer)) ;e.g. with-temp-buffer
(if (eq major-mode 'exwm-mode)
(progn (setq exwm-input--focus-id exwm--id)
(when exwm--floating-frame
(if (eq (selected-frame) exwm--floating-frame)
;; Cancel the possible input focus redirection
(redirect-frame-focus exwm--floating-frame nil)
;; Focus the floating frame
(x-focus-frame exwm--floating-frame)))
;; Finally focus the window
(exwm-input--set-focus exwm-input--focus-id))
(exwm--with-current-id exwm-input--focus-id
(setq exwm-input--focus-id xcb:Window:None)
(let ((frame (selected-frame)))
(if exwm--floating-frame
(unless (or (eq frame exwm--floating-frame)
(active-minibuffer-window))
;; Redirect input focus to the workspace frame
(redirect-frame-focus exwm--floating-frame frame))
;; Focus the workspace frame
(x-focus-frame frame))))))
(setq exwm-input--focus-lock nil)))
(defun exwm-input--finish-key-sequence ()
"Mark the end of a key sequence (with the aid of `pre-command-hook')."
(setq exwm-input--during-key-sequence nil)
(when exwm-input--temp-line-mode
(setq exwm-input--temp-line-mode nil)
(exwm-input--release-keyboard)))
(defun exwm-input--on-MappingNotify (data synthetic)
"Handle MappingNotify event."
(let ((obj (make-instance 'xcb:MappingNotify)))
(xcb:unmarshal obj data)
(with-slots (request first-keycode count) obj
(cond ((= request xcb:Mapping:Modifier)
;; Modifier keys changed
(xcb:keysyms:update-modifier-mapping exwm--connection))
((= request xcb:Mapping:Keyboard)
;; Only updated changed keys
(xcb:keysyms:update-keyboard-mapping exwm--connection
first-keycode count))))))
(defun exwm-input--on-ButtonPress (data synthetic)
"Handle ButtonPress event."
(let ((obj (make-instance 'xcb:ButtonPress))
(mode xcb:Allow:SyncPointer))
(xcb:unmarshal obj data)
(with-slots (detail time event state) obj
(setq exwm-input--timestamp time)
(cond ((and (= state exwm-input--move-mask)
(= detail exwm-input--move-keysym))
;; Move
(exwm-floating--start-moveresize event
xcb:ewmh:_NET_WM_MOVERESIZE_MOVE))
((and (= state exwm-input--resize-mask)
(= detail exwm-input--resize-keysym))
;; Resize
(exwm-floating--start-moveresize event))
(t
;; Click to focus
(unless (and (boundp 'exwm--id) (= event exwm--id))
(exwm--with-current-id event
(raise-frame (or exwm--floating-frame exwm--frame))
(select-window (get-buffer-window nil 'visible))))
;; The event should be replayed
(setq mode xcb:Allow:ReplayPointer))))
(xcb:+request exwm--connection
(make-instance 'xcb:AllowEvents :mode mode :time xcb:Time:CurrentTime))
(xcb:flush exwm--connection)))
(defun exwm-input--on-KeyPress (data synthetic)
"Handle KeyPress event."
(let ((obj (make-instance 'xcb:KeyPress)))
(xcb:unmarshal obj data)
(setq exwm-input--timestamp (slot-value obj 'time))
(funcall 'exwm-input--handle-KeyPress obj)))
(defvar exwm-input--global-keys nil "Global key bindings.")
(defvar exwm-input--global-prefix-keys nil
"List of prefix keys of global key bindings.")
(defun exwm-input--update-global-prefix-keys ()
"Update `exwm-input--global-prefix-keys'."
(when exwm--connection
(let ((original exwm-input--global-prefix-keys)
keysym)
(setq exwm-input--global-prefix-keys nil)
(dolist (i exwm-input--global-keys)
(cl-pushnew (elt i 0) exwm-input--global-prefix-keys))
(unless (equal original exwm-input--global-prefix-keys)
;; Grab global keys on root window
(if (xcb:+request-checked+request-check exwm--connection
(make-instance 'xcb:UngrabKey
:key xcb:Grab:Any :grab-window exwm--root
:modifiers xcb:ModMask:Any))
(exwm--log "Failed to ungrab keys")
(dolist (i exwm-input--global-prefix-keys)
(setq keysym (xcb:keysyms:event->keysym i))
(when (or (not keysym)
(xcb:+request-checked+request-check exwm--connection
(make-instance 'xcb:GrabKey
:owner-events 0
:grab-window exwm--root
:modifiers (cadr keysym)
:key (xcb:keysyms:keysym->keycode
exwm--connection (car keysym))
:pointer-mode xcb:GrabMode:Async
:keyboard-mode xcb:GrabMode:Async)))
(user-error "[EXWM] Failed to grab key: %s" i))))))))
(defun exwm-input-set-key (key command)
"Set a global key binding."
(global-set-key key command)
(cl-pushnew key exwm-input--global-keys))
(defvar exwm-input--during-key-sequence nil
"Non-nil indicates Emacs is waiting for more keys to form a key sequence.")
(defvar exwm-input--temp-line-mode nil
"Non-nil indicates it's in temporary line-mode for char-mode.")
;; ;; This implementation has a problem that it also releases queued keys after
;; ;; requesting AllowEvent. The client window will capture unexpected key events
;; ;; in this case.
;; ;; P.S.; to use this implementation, comment out the KeyRelease listener
;; ;; together with this one and make GrabKey in Sync mode.
;; (cl-defmethod exwm-input--handle-KeyPress-line-mode ((obj xcb:KeyPress))
;; "Parse X KeyPress event to Emacs key event and then feed the command loop."
;; (with-slots (detail state) obj
;; (let ((keysym (xcb:keysyms:keycode->keysym exwm--connection detail state))
;; event window mode)
;; (when (and keysym
;; (setq event (xcb:keysyms:keysym->event keysym state))
;; (or exwm-input--during-key-sequence
;; (= exwm-input--focus-id xcb:Window:None)
;; (setq window (active-minibuffer-window))
;; (eq event ?\C-c) ;mode-specific key
;; (memq event exwm-input--global-prefix-keys)
;; (memq event exwm-input-prefix-keys)
;; (memq event
;; exwm-input--simulation-prefix-keys)))
;; (setq mode xcb:Allow:SyncKeyboard)
;; (unless window (setq exwm-input--during-key-sequence t))
;; (push event unread-command-events))
;; (xcb:+request exwm--connection
;; (make-instance 'xcb:AllowEvents
;; :mode (or mode xcb:Allow:ReplayKeyboard)
;; :time xcb:Time:CurrentTime))
;; (xcb:flush exwm--connection))))
;; This implementation has a drawback that some (legacy) applications
;; (e.g. xterm) ignore the synthetic key events, making it only viable for EXWM
;; to work in char-mode in such case.
(cl-defmethod exwm-input--handle-KeyPress-line-mode ((obj xcb:KeyPress))
"Parse X KeyPress event to Emacs key event and then feed the command loop."
(with-slots (detail state) obj
(let ((keysym (xcb:keysyms:keycode->keysym exwm--connection detail state))
event minibuffer-window)
(if (and keysym
(setq event (xcb:keysyms:keysym->event keysym state))
(or exwm-input--during-key-sequence
(= exwm-input--focus-id xcb:Window:None)
(setq minibuffer-window (active-minibuffer-window))
(eq event ?\C-c) ;mode-specific key
(memq event exwm-input--global-prefix-keys)
(memq event exwm-input-prefix-keys)
(memq event exwm-input--simulation-prefix-keys)))
;; Forward key to Emacs frame
(progn (unless minibuffer-window
(setq exwm-input--during-key-sequence t))
(push event unread-command-events))
;; Forward key to window
(xcb:+request exwm--connection
(make-instance 'xcb:SendEvent
:propagate 0 :destination (slot-value obj 'event)
:event-mask xcb:EventMask:NoEvent
:event (xcb:marshal obj exwm--connection)))
(xcb:flush exwm--connection)))))
(cl-defmethod exwm-input--handle-KeyPress-char-mode ((obj xcb:KeyPress))
"Handle KeyPress event in char-mode."
(with-slots (detail state) obj
(let ((keysym (xcb:keysyms:keycode->keysym exwm--connection detail state))
event)
(when (and keysym (setq event (xcb:keysyms:keysym->event keysym state)))
(setq exwm-input--temp-line-mode t
exwm-input--during-key-sequence t)
(push event unread-command-events)
(exwm-input--grab-keyboard))))) ;grab keyboard temporarily
(defalias 'exwm-input--handle-KeyPress 'exwm-input--handle-KeyPress-line-mode
"Generic function for handling KeyPress event.")
(defun exwm-input--grab-keyboard (&optional id)
"Grab all key events on window ID."
(unless id (setq id (exwm--buffer->id (window-buffer))))
(when (xcb:+request-checked+request-check exwm--connection
(make-instance 'xcb:GrabKey
:owner-events 0 :grab-window id
:modifiers xcb:ModMask:Any
:key xcb:Grab:Any
:pointer-mode xcb:GrabMode:Async
:keyboard-mode xcb:GrabMode:Async))
(exwm--log "Failed to grab keyboard for #x%x" id))
(defalias 'exwm-input--handle-KeyPress
'exwm-input--handle-KeyPress-line-mode))
(defun exwm-input--release-keyboard (&optional id)
"Ungrab all key events on window ID."
(unless id (setq id (exwm--buffer->id (window-buffer))))
(when (xcb:+request-checked+request-check exwm--connection
(make-instance 'xcb:UngrabKey
:key xcb:Grab:Any :grab-window id
:modifiers xcb:ModMask:Any))
(exwm--log "Failed to release keyboard for #x%x" id))
(defalias 'exwm-input--handle-KeyPress
'exwm-input--handle-KeyPress-char-mode))
(defun exwm-input-grab-keyboard (&optional id)
"Switch to line-mode."
(interactive)
(exwm-input--grab-keyboard id)
(setq mode-line-process
'(": "
(:propertize "line"
help-echo "mouse-1: Switch to char-mode"
mouse-face mode-line-highlight
local-map
(keymap
(mode-line
keymap
(down-mouse-1 . exwm-input-release-keyboard))))))
(force-mode-line-update))
(defun exwm-input-release-keyboard (&optional id)
"Switch to char-mode."
(interactive)
(exwm-input--release-keyboard id)
(setq mode-line-process
'(": "
(:propertize "char"
help-echo "mouse-1: Switch to line-mode"
mouse-face mode-line-highlight
local-map
(keymap
(mode-line
keymap
(down-mouse-1 . exwm-input-grab-keyboard))))))
(force-mode-line-update))
(defun exwm-input--fake-key (event)
"Fake a key event equivalent to Emacs event EVENT."
(let* ((keysym (xcb:keysyms:event->keysym event))
(keycode (xcb:keysyms:keysym->keycode exwm--connection (car keysym)))
(id (exwm--buffer->id (window-buffer (selected-window)))))
(when keycode
(xcb:+request exwm--connection
(make-instance 'xcb:SendEvent
:propagate 0 :destination id
:event-mask xcb:EventMask:NoEvent
:event (xcb:marshal
(make-instance 'xcb:KeyPress
:detail keycode
:time xcb:Time:CurrentTime
:root exwm--root :event id
:child 0
:root-x 0 :root-y 0
:event-x 0 :event-y 0
:state (cadr keysym)
:same-screen 1)
exwm--connection))))
(xcb:flush exwm--connection)))
(defun exwm-input-send-next-key (times)
"Send next key to client window."
(interactive "p")
(when (> times 12) (setq times 12))
(let (key keys)
(dotimes (i times)
;; Skip events not from keyboard
(setq exwm-input--during-key-sequence t)
(catch 'break
(while t
(setq key (read-key (format "Send key: %s (%d/%d)"
(key-description keys)
(1+ i) times)))
(unless (listp key) (throw 'break nil))))
(setq exwm-input--during-key-sequence nil)
(setq keys (vconcat keys (vector key)))
(exwm-input--fake-key key))))
;; (defun exwm-input-send-last-key ()
;; (interactive)
;; (unless (listp last-input-event) ;not a key event
;; (exwm-input--fake-key last-input-event)))
(defvar exwm-input-prefix-keys
'(?\C-x ?\C-u ?\C-h ?\M-x ?\M-` ?\M-\S-! ?\M-\S-& ?\M-\S-:)
"List of prefix keys EXWM should forward to Emacs when in line-mode.")
(defvar exwm-input--simulation-keys nil "Simulation keys in line-mode.")
(defvar exwm-input--simulation-prefix-keys nil
"List of prefix keys of simulation keys in line-mode.")
(defun exwm-input--update-simulation-prefix-keys ()
"Update the list of prefix keys of simulation keys."
(setq exwm-input--simulation-prefix-keys nil)
(dolist (i exwm-input--simulation-keys)
(define-key exwm-mode-map (car i) 'exwm-input-send-simulation-key)
(cl-pushnew (elt (car i) 0) exwm-input--simulation-prefix-keys)))
(defun exwm-input-set-simulation-keys (simulation-keys)
"Set simulation keys.
SIMULATION-KEYS is a list of alist (key-sequence1 . key-sequence2)."
(setq exwm-input--simulation-keys nil)
(dolist (i simulation-keys)
(cl-pushnew `(,(vconcat (car i)) . ,(cdr i)) exwm-input--simulation-keys))
(exwm-input--update-simulation-prefix-keys))
(defun exwm-input-send-simulation-key ()
"Fake a key event according to last input key sequence."
(interactive)
(let ((pair (assoc (this-command-keys-vector) ;FIXME: pefix
exwm-input--simulation-keys))
key)
(when pair
(setq pair (cdr pair))
(unless (listp pair)
(setq pair (list pair)))
(dolist (i pair)
(exwm-input--fake-key i)))))
(defun exwm-input--init ()
"Initialize the keyboard module."
;; Refresh keyboard mapping
(xcb:keysyms:init exwm--connection)
;; Convert move/resize buttons
(let ((move-key (xcb:keysyms:event->keysym exwm-input-move-event))
(resize-key (xcb:keysyms:event->keysym exwm-input-resize-event)))
(setq exwm-input--move-keysym (car move-key)
exwm-input--move-mask (cadr move-key)
exwm-input--resize-keysym (car resize-key)
exwm-input--resize-mask (cadr resize-key)))
;; Attach event listeners
(xcb:+event exwm--connection 'xcb:MappingNotify
'exwm-input--on-MappingNotify)
(xcb:+event exwm--connection 'xcb:KeyPress 'exwm-input--on-KeyPress)
(xcb:+event exwm--connection 'xcb:ButtonPress 'exwm-input--on-ButtonPress)
(xcb:+event exwm--connection 'xcb:ButtonRelease
'exwm-floating--stop-moveresize)
(xcb:+event exwm--connection 'xcb:MotionNotify 'exwm-floating--do-moveresize)
;; `pre-command-hook' marks the end of a key sequence (existing or not)
(add-hook 'pre-command-hook 'exwm-input--finish-key-sequence)
;; Update focus when buffer list updates
(add-hook 'buffer-list-update-hook 'exwm-input--update-focus)
;; Update prefix keys for global keys
(exwm-input--update-global-prefix-keys))
(provide 'exwm-input)
;;; exwm-input.el ends here

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;;; exwm-layout.el --- Layout Module for EXWM -*- lexical-binding: t -*-
;; Copyright (C) 2015 Chris Feng
;; Author: Chris Feng <chris.w.feng@gmail.com>
;; Keywords: unix
;; This file is not part of GNU Emacs.
;; This file 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 file 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 file. If not, see <http://www.gnu.org/licenses/>.
;;; Commentary:
;; This module is responsible for keeping X client window properly displayed.
;;; Code:
(defun exwm-layout--show (id &optional window)
"Show window ID exactly fit in the Emacs window WINDOW."
(xcb:+request exwm--connection (make-instance 'xcb:MapWindow :window id))
(xcb:+request exwm--connection
(make-instance 'xcb:icccm:set-WM_STATE
:window id :state xcb:icccm:WM_STATE:NormalState
:icon xcb:Window:None))
(let* ((edges (or (exwm--with-current-id id exwm--floating-edges)
(window-inside-pixel-edges window)))
(x (elt edges 0))
(y (elt edges 1))
(width (- (elt edges 2) (elt edges 0)))
(height (- (elt edges 3) (elt edges 1))))
(xcb:+request exwm--connection
(make-instance 'xcb:ConfigureWindow
:window id
:value-mask (logior xcb:ConfigWindow:X
xcb:ConfigWindow:Y
xcb:ConfigWindow:Width
xcb:ConfigWindow:Height
xcb:ConfigWindow:StackMode)
:x x :y y :width width :height height
;; In order to put non-floating window at bottom
:stack-mode xcb:StackMode:Below))
(xcb:+request exwm--connection
(make-instance 'xcb:SendEvent
:propagate 0 :destination id
:event-mask xcb:EventMask:StructureNotify
:event (xcb:marshal
(make-instance 'xcb:ConfigureNotify
:event id :window id
:above-sibling xcb:Window:None
:x x :y y
:width width :height height
:border-width 0
:override-redirect 0)
exwm--connection))))
(xcb:flush exwm--connection))
(defun exwm-layout--hide (id)
"Hide window ID."
(unless (eq xcb:icccm:WM_STATE:IconicState ;already hidden
(with-current-buffer (exwm--id->buffer id) exwm-state))
(xcb:+request exwm--connection
(make-instance 'xcb:ChangeWindowAttributes
:window id :value-mask xcb:CW:EventMask
:event-mask xcb:EventMask:NoEvent))
(xcb:+request exwm--connection (make-instance 'xcb:UnmapWindow :window id))
(xcb:+request exwm--connection
(make-instance 'xcb:ChangeWindowAttributes
:window id :value-mask xcb:CW:EventMask
:event-mask exwm--client-event-mask))
(xcb:+request exwm--connection
(make-instance 'xcb:icccm:set-WM_STATE
:window id
:state xcb:icccm:WM_STATE:IconicState
:icon xcb:Window:None))
(xcb:flush exwm--connection)))
(defun exwm-layout-set-fullscreen (&optional id)
"Make window ID fullscreen."
(interactive)
(with-current-buffer (if id (exwm--id->buffer id) (window-buffer))
;; Set the floating frame fullscreen first when the client is floating
(when exwm--floating-frame
(let* ((outer-id (frame-parameter exwm--floating-frame 'exwm-outer-id))
(geometry (xcb:+request-unchecked+reply exwm--connection
(make-instance 'xcb:GetGeometry
:drawable outer-id))))
(setq exwm--floating-frame-geometry
(vector (slot-value geometry 'x) (slot-value geometry 'y)
(slot-value geometry 'width)
(slot-value geometry 'height)))
(xcb:+request exwm--connection
(make-instance 'xcb:ConfigureWindow
:window outer-id
:value-mask (logior xcb:ConfigWindow:X
xcb:ConfigWindow:Y
xcb:ConfigWindow:Width
xcb:ConfigWindow:Height)
:x 0 :y 0
:width (x-display-pixel-width)
:height (x-display-pixel-height))))
(xcb:flush exwm--connection))
(xcb:+request exwm--connection
(make-instance 'xcb:ConfigureWindow
:window exwm--id
:value-mask (logior xcb:ConfigWindow:X
xcb:ConfigWindow:Y
xcb:ConfigWindow:Width
xcb:ConfigWindow:Height)
:x 0 :y 0
:width (x-display-pixel-width)
:height (x-display-pixel-height)))
(xcb:+request exwm--connection
(make-instance 'xcb:ewmh:set-_NET_WM_STATE
:window exwm--id
:data (vector xcb:Atom:_NET_WM_STATE_FULLSCREEN)))
(xcb:flush exwm--connection)
(cl-assert (not exwm--fullscreen))
(setq exwm--fullscreen t)
(exwm-input-release-keyboard)))
(defun exwm-layout-unset-fullscreen (&optional id)
"Restore window from fullscreen state."
(interactive)
(with-current-buffer (if id (exwm--id->buffer id) (window-buffer))
;; Restore the floating frame if the client is floating
(when exwm--floating-frame
(xcb:+request exwm--connection
(make-instance 'xcb:ConfigureWindow
:window (frame-parameter exwm--floating-frame
'exwm-outer-id)
:value-mask (logior xcb:ConfigWindow:X
xcb:ConfigWindow:Y
xcb:ConfigWindow:Width
xcb:ConfigWindow:Height)
:x (elt exwm--floating-frame-geometry 0)
:y (elt exwm--floating-frame-geometry 1)
:width (elt exwm--floating-frame-geometry 2)
:height (elt exwm--floating-frame-geometry 3))))
(exwm-layout--show exwm--id)
(xcb:+request exwm--connection
(make-instance 'xcb:ewmh:set-_NET_WM_STATE :window exwm--id :data []))
(xcb:flush exwm--connection)
(cl-assert exwm--fullscreen)
(setq exwm--fullscreen nil)
(exwm-input-grab-keyboard)))
(defvar exwm-layout--window-configuration (current-window-configuration)
"Last saved window configuration, for avoiding unnecessary refreshes.")
(defun exwm-layout--refresh ()
"Refresh layout."
(unless (compare-window-configurations exwm-layout--window-configuration
(current-window-configuration))
(setq exwm-layout--window-configuration (current-window-configuration))
(let ((frame (selected-frame))
windows)
(if (not (memq frame exwm-workspace--list))
;; Refresh a floating frame
(when (eq major-mode 'exwm-mode)
(with-current-buffer (window-buffer (frame-first-window frame))
(exwm-layout--show exwm--id (frame-first-window frame))))
;; Refresh the whole workspace
(dolist (pair exwm--id-buffer-alist)
(with-current-buffer (cdr pair)
;; Exclude windows on other workspaces and floating frames
(when (and (eq frame exwm--frame) (not exwm--floating-frame))
(setq windows (get-buffer-window-list (current-buffer) 0))
(if (not windows)
(exwm-layout--hide exwm--id)
(exwm-layout--show exwm--id (car windows))
(dolist (i (cdr windows))
(set-window-buffer i "*scratch*"))))))))))
(defun exwm-layout--init ()
"Initialize layout module."
;; Auto refresh layout
(add-hook 'window-configuration-change-hook 'exwm-layout--refresh))
(provide 'exwm-layout)
;;; exwm-layout.el ends here

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;;; exwm-manage.el --- Window Management Module for -*- lexical-binding: t -*-
;;; EXWM
;; Copyright (C) 2015 Chris Feng
;; Author: Chris Feng <chris.w.feng@gmail.com>
;; Keywords: unix
;; This file is not part of GNU Emacs.
;; This file 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 file 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 file. If not, see <http://www.gnu.org/licenses/>.
;;; Commentary:
;; This is the fundamental module of EXWM that deals with window management.
;;; Code:
(require 'exwm-input)
(defvar exwm-manage-finish-hook nil
"Normal hook run after a window is just managed, in the context of the
corresponding buffer.")
(defun exwm-manage--update-geometry (id &optional force)
"Update window geometry."
(exwm--with-current-id id
(unless (and exwm--geometry (not force))
(let ((reply (xcb:+request-unchecked+reply exwm--connection
(make-instance 'xcb:GetGeometry :drawable id))))
(when reply ;nil when destroyed
(setq exwm--geometry reply))))))
(defun exwm-manage--manage-window (id)
"Manage window ID."
(setq exwm-input--focus-lock t)
(catch 'return
;; Ensure it's not managed
(when (assoc id exwm--id-buffer-alist)
(throw 'return 'managed))
;; Ensure it's alive
(when (xcb:+request-checked+request-check exwm--connection
(make-instance 'xcb:ChangeWindowAttributes
:window id :value-mask xcb:CW:EventMask
:event-mask exwm--client-event-mask))
(throw 'return 'dead))
(with-current-buffer (generate-new-buffer "*EXWM*")
(push `(,id . ,(current-buffer)) exwm--id-buffer-alist)
(exwm-mode)
(setq exwm--id id)
(exwm--update-window-type id)
(exwm--update-class id)
(exwm-manage--update-geometry id)
;; No need to manage (please check OverrideRedirect outside)
(when (or
(not
(or (not exwm-window-type)
(memq xcb:Atom:_NET_WM_WINDOW_TYPE_UTILITY exwm-window-type)
(memq xcb:Atom:_NET_WM_WINDOW_TYPE_DIALOG exwm-window-type)
(memq xcb:Atom:_NET_WM_WINDOW_TYPE_NORMAL exwm-window-type)))
;; For Java applications
(and exwm-instance-name
(string-prefix-p "sun-awt-X11-" exwm-instance-name)
(not (string-suffix-p "XFramePeer" exwm-instance-name))))
;; Remove all events
(xcb:+request-checked+request-check exwm--connection
(make-instance 'xcb:ChangeWindowAttributes
:window id :value-mask xcb:CW:EventMask
:event-mask xcb:EventMask:NoEvent))
;; The window needs to be mapped
(xcb:+request exwm--connection
(make-instance xcb:MapWindow :window id))
(with-slots (x y width height) exwm--geometry
;; Reparent to virtual root (essential)
(xcb:+request exwm--connection
(make-instance 'xcb:ReparentWindow
:window id
:parent (frame-parameter exwm-workspace--current
'exwm-window-id)
:x x :y y))
;; Center window of type _NET_WM_WINDOW_TYPE_SPLASH
(when (memq xcb:Atom:_NET_WM_WINDOW_TYPE_SPLASH exwm-window-type)
(xcb:+request exwm--connection
(make-instance 'xcb:ConfigureWindow
:window id
:value-mask (logior xcb:ConfigWindow:X
xcb:ConfigWindow:Y)
:x (/ (- (x-display-pixel-width) width) 2)
:y (/ (- (x-display-pixel-height) height) 2)))))
(xcb:flush exwm--connection)
(setq kill-buffer-query-functions nil)
(setq exwm--id-buffer-alist (assq-delete-all id exwm--id-buffer-alist))
(kill-buffer (current-buffer))
(throw 'return 'ignored))
;; Manage the window
(xcb:+request exwm--connection ;remove border
(make-instance 'xcb:ConfigureWindow
:window id :value-mask xcb:ConfigWindow:BorderWidth
:border-width 0))
(xcb:+request exwm--connection ;grab buttons for set focus/move/resize
(make-instance 'xcb:GrabButton
:owner-events 0 :grab-window id
:event-mask xcb:EventMask:ButtonPress
:pointer-mode xcb:GrabMode:Sync
:keyboard-mode xcb:GrabMode:Async
:confine-to xcb:Window:None
:cursor xcb:Cursor:None
:button xcb:ButtonIndex:Any
:modifiers xcb:ModMask:Any))
(xcb:flush exwm--connection)
(exwm--update-title id)
(exwm--update-transient-for id)
(exwm--update-normal-hints id)
(exwm--update-hints id)
(exwm--update-protocols id)
(exwm--update-state id)
(if (or exwm-transient-for exwm--fixed-size
(memq xcb:Atom:_NET_WM_WINDOW_TYPE_UTILITY exwm-window-type)
(memq xcb:Atom:_NET_WM_WINDOW_TYPE_DIALOG exwm-window-type))
(exwm-floating--set-floating id)
(exwm-floating--unset-floating id))
(exwm-input-grab-keyboard id)
(exwm-workspace--update-switch-history)
(setq exwm-input--focus-lock nil) ;unlocked in advance
(with-current-buffer (exwm--id->buffer id)
(run-hooks 'exwm-manage-finish-hook))))
(setq exwm-input--focus-lock nil))
(defun exwm-manage--unmanage-window (id &optional withdraw-only)
"Unmanage window ID."
(let ((buffer (exwm--id->buffer id)))
(setq exwm--id-buffer-alist (assq-delete-all id exwm--id-buffer-alist))
(when (buffer-live-p buffer)
(with-current-buffer buffer
(exwm-workspace--update-switch-history)
;;
(when withdraw-only
;; Reparent back to root
(xcb:+request exwm--connection
(make-instance 'xcb:ChangeWindowAttributes
:window id :value-mask xcb:CW:EventMask
:event-mask xcb:EventMask:NoEvent))
(let (x y geometry geometry-parent)
(if (not exwm--floating-frame)
(setq x 0 y 0) ;the position does not matter
(setq geometry-parent
(xcb:+request-unchecked+reply exwm--connection
(make-instance 'xcb:GetGeometry
:drawable
(frame-parameter exwm--floating-frame
'exwm-outer-id)))
geometry (xcb:+request-unchecked+reply exwm--connection
(make-instance 'xcb:GetGeometry
:drawable id)))
(if (not (and geometry-parent geometry))
(setq x 0 y 0) ;e.g. have been destroyed
(setq x (+ (slot-value geometry-parent 'x)
(slot-value geometry 'x))
y (+ (slot-value geometry-parent 'y)
(slot-value geometry 'y)))))
(xcb:+request exwm--connection
(make-instance 'xcb:ReparentWindow
:window id :parent exwm--root :x x :y y)))
;; Delete WM_STATE property
(xcb:+request exwm--connection
(make-instance 'xcb:DeleteProperty
:window id :property xcb:Atom:WM_STATE))
(xcb:flush exwm--connection))
(setq kill-buffer-query-functions nil)
(kill-buffer)
(select-frame-set-input-focus exwm-workspace--current)))))
(defun exwm-manage--scan ()
"Search for existing windows and try to manage them."
(let* ((tree (xcb:+request-unchecked+reply exwm--connection
(make-instance 'xcb:QueryTree :window exwm--root))))
(dolist (i (slot-value tree 'children))
(with-slots (override-redirect map-state)
(xcb:+request-unchecked+reply exwm--connection
(make-instance 'xcb:GetWindowAttributes :window i))
(when (and (= 0 override-redirect) (= xcb:MapState:Viewable map-state))
(exwm-manage--manage-window i))))))
(defvar exwm-manage--ping-lock nil
"Non-nil indicates EXWM is pinging a window.")
(defvar exwm-manage-ping-timeout 3 "Seconds to wait before killing a client.")
(defun exwm-manage--close-window (id &optional buffer)
"Close window ID in a proper way."
(catch 'return
(unless buffer (setq buffer (exwm--id->buffer id)))
;; Destroy the client window if it does not support WM_DELETE_WINDOW
(unless (and (buffer-live-p buffer)
(with-current-buffer buffer
(memq xcb:Atom:WM_DELETE_WINDOW exwm--protocols)))
(xcb:+request exwm--connection
(make-instance 'xcb:DestroyWindow :window id))
(xcb:flush exwm--connection)
(throw 'return nil))
;; Try to close the window with WM_DELETE_WINDOW client message
(xcb:+request exwm--connection
(make-instance 'xcb:icccm:SendEvent
:destination id
:event (xcb:marshal
(make-instance 'xcb:icccm:WM_DELETE_WINDOW
:window id)
exwm--connection)))
(xcb:flush exwm--connection)
;; Try to determine if the client stop responding
;; FIXME: check
(with-current-buffer buffer
(when (memq xcb:Atom:_NET_WM_PING exwm--protocols)
(setq exwm-manage--ping-lock t)
(xcb:+request exwm--connection
(make-instance 'xcb:SendEvent
:propagate 0 :destination id
:event-mask xcb:EventMask:NoEvent
:event (xcb:marshal
(make-instance 'xcb:ewmh:_NET_WM_PING
:window id :timestamp 0
:client-window id)
exwm--connection)))
(xcb:flush exwm--connection)
(with-timeout (exwm-manage-ping-timeout
(if (yes-or-no-p (format "\
`%s' is not responding. Would you like to kill it? " (buffer-name buffer)))
(progn (exwm-manage--kill-client id)
(throw 'return nil))
(throw 'return nil)))
(while (and exwm-manage--ping-lock
(exwm--id->buffer id)) ;may have be destroyed
(accept-process-output nil 0.1)))
(throw 'return nil)))
(throw 'return nil)))
(defun exwm-manage--kill-client (&optional id)
"Kill an X client."
(interactive)
(unless id (setq id (exwm--buffer->id (current-buffer))))
(let ((pid (slot-value
(xcb:+request-unchecked+reply exwm--connection
(make-instance 'xcb:ewmh:get-_NET_WM_PID :window id))
'value)))
(if pid
(signal-process pid 'SIGKILL)
(xcb:+request exwm--connection
(make-instance 'xcb:KillClient :resource id))
(xcb:flush exwm--connection))))
(defun exwm-manage--on-ConfigureRequest (data synthetic)
"Handle ConfigureRequest event."
(let ((obj (make-instance 'xcb:ConfigureRequest))
buffer edges)
(xcb:unmarshal obj data)
(with-slots (window x y width height border-width) obj
(if (setq buffer (exwm--id->buffer window))
;; Send client message for managed windows
(progn
(setq edges (or (with-current-buffer buffer exwm--floating-edges)
(window-inside-absolute-pixel-edges
(get-buffer-window buffer))))
(xcb:+request exwm--connection
(make-instance 'xcb:SendEvent
:propagate 0 :destination window
:event-mask xcb:EventMask:StructureNotify
:event (xcb:marshal
(make-instance
'xcb:ConfigureNotify
:event window :window window
:above-sibling xcb:Window:None
:x (elt edges 0) :y (elt edges 1)
:width (- (elt edges 2) (elt edges 0))
:height (- (elt edges 3) (elt edges 1))
:border-width 0 :override-redirect 0)
exwm--connection))))
;; Configure unmanaged windows
(xcb:+request exwm--connection
(make-instance 'xcb:ConfigureWindow
:window window
:value-mask (logior xcb:ConfigWindow:X
xcb:ConfigWindow:Y
xcb:ConfigWindow:Width
xcb:ConfigWindow:Height
xcb:ConfigWindow:BorderWidth)
:x x :y y :width width :height height
:border-width border-width)))))
(xcb:flush exwm--connection))
(defun exwm-manage--on-MapRequest (data synthetic)
"Handle MapRequest event."
(let ((obj (make-instance 'xcb:MapRequest)))
(xcb:unmarshal obj data)
(exwm-manage--manage-window (slot-value obj 'window))))
(defun exwm-manage--on-UnmapNotify (data synthetic)
"Handle UnmapNotify event."
(unless synthetic
(let ((obj (make-instance 'xcb:UnmapNotify)))
(xcb:unmarshal obj data)
(exwm-manage--unmanage-window (slot-value obj 'window) t))))
(defun exwm-manage--on-DestroyNotify (data synthetic)
"Handle DestroyNotify event."
(unless synthetic
(let ((obj (make-instance 'xcb:DestroyNotify)))
(xcb:unmarshal obj data)
(exwm-manage--unmanage-window (slot-value obj 'window)))))
(defun exwm-manage--init ()
"Initialize manage module."
(xcb:+event exwm--connection 'xcb:ConfigureRequest
'exwm-manage--on-ConfigureRequest)
(xcb:+event exwm--connection 'xcb:MapRequest 'exwm-manage--on-MapRequest)
(xcb:+event exwm--connection 'xcb:UnmapNotify 'exwm-manage--on-UnmapNotify)
(xcb:+event exwm--connection 'xcb:DestroyNotify
'exwm-manage--on-DestroyNotify))
(provide 'exwm-manage)
;;; exwm-manage.el ends here

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;;; exwm-workspace.el --- Workspace Module for EXWM -*- lexical-binding: t -*-
;; Copyright (C) 2015 Chris Feng
;; Author: Chris Feng <chris.w.feng@gmail.com>
;; Keywords: unix
;; This file is not part of GNU Emacs.
;; This file 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 file 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 file. If not, see <http://www.gnu.org/licenses/>.
;;; Commentary:
;; This module adds workspace support for EXWM.
;; Todo:
;; + prevent from deleting frames of Emacs client (`frame-delete-functions')
;;; Code:
(defvar exwm-workspace-number 4 "Number of workspaces (1 ~ 10).")
(defvar exwm-workspace--list nil "List of all workspaces (Emacs frames).")
(defvar exwm-workspace--switch-map
(let ((map (make-sparse-keymap)))
(define-key map [t] (lambda () (interactive)))
(dotimes (i 10)
(define-key map (int-to-string i)
`(lambda ()
(interactive)
(when (< ,i exwm-workspace-number)
(goto-history-element ,(1+ i))
(exit-minibuffer)))))
(define-key map "\C-a" (lambda () (interactive) (goto-history-element 1)))
(define-key map "\C-e" (lambda ()
(interactive)
(goto-history-element exwm-workspace-number)))
(define-key map "\C-g" 'abort-recursive-edit)
(define-key map "\C-]" 'abort-recursive-edit)
(define-key map "\C-j" 'exit-minibuffer)
;; (define-key map "\C-m" 'exit-minibuffer) ;not working
(define-key map [return] 'exit-minibuffer)
(define-key map " " 'exit-minibuffer)
(define-key map "\C-f" 'previous-history-element)
(define-key map "\C-b" 'next-history-element)
;; Alternative keys
(define-key map [right] 'previous-history-element)
(define-key map [left] 'next-history-element)
map)
"Keymap used for interactively switch workspace.")
(defvar exwm-workspace--switch-history nil
"History for `read-from-minibuffer' to interactively switch workspace.")
(defun exwm-workspace--update-switch-history ()
"Update the history for switching workspace to reflect the latest status."
(let ((sequence (number-sequence 0 (1- exwm-workspace-number)))
(not-empty (make-vector exwm-workspace-number nil)))
(dolist (i exwm--id-buffer-alist)
(with-current-buffer (cdr i)
(setf (elt not-empty (cl-position exwm--frame exwm-workspace--list))
t)))
(setq exwm-workspace--switch-history
(mapcar
(lambda (i)
(mapconcat
(lambda (j)
(format (if (= i j) "[%s]" " %s ")
(propertize
(int-to-string j)
'face
(cond ((frame-parameter (elt exwm-workspace--list j)
'exwm--urgency)
'(:foreground "orange"))
((elt not-empty j) '(:foreground "green"))
(t nil)))))
sequence ""))
sequence))))
(defvar exwm-workspace--current nil "Current active workspace.")
(defvar exwm-workspace-current-index 0 "Index of current active workspace.")
(defun exwm-workspace-switch (index &optional force)
"Switch to workspace INDEX. Query for INDEX if it's not specified.
The optional FORCE option is for internal use only "
(interactive
(list
(let* ((history-add-new-input nil) ;prevent modifying history
(idx (read-from-minibuffer
"Workspace: " (elt exwm-workspace--switch-history
exwm-workspace-current-index)
exwm-workspace--switch-map nil
`(exwm-workspace--switch-history
. ,(1+ exwm-workspace-current-index)))))
(cl-position idx exwm-workspace--switch-history :test 'equal))))
(unless (and (<= 0 index) (< index exwm-workspace-number))
(user-error "[EXWM] Workspace index out of range: %d" index))
(when (or force (/= exwm-workspace-current-index index))
(select-frame-set-input-focus (elt exwm-workspace--list index))
;; Hide all workspaces but the selected one
(dotimes (i exwm-workspace-number)
(unless (= i index) (make-frame-invisible (elt exwm-workspace--list i))))
(setq exwm-workspace--current (elt exwm-workspace--list index)
exwm-workspace-current-index index)
(setq default-minibuffer-frame (selected-frame))
;; Hide windows in other workspaces by preprending a space
(dolist (i exwm--id-buffer-alist)
(with-current-buffer (cdr i)
(let ((name (replace-regexp-in-string "^\\s-*" "" (buffer-name))))
(rename-buffer (if (eq (selected-frame) exwm--frame)
name
(concat " " name))))))
;; Update demands attention flag
(set-frame-parameter (selected-frame) 'exwm--urgency nil)
;; Update switch workspace history
(exwm-workspace--update-switch-history)
;; Update _NET_CURRENT_DESKTOP
(xcb:+request exwm--connection
(make-instance 'xcb:ewmh:set-_NET_CURRENT_DESKTOP
:window exwm--root :data index))
(xcb:flush exwm--connection)))
(defun exwm-workspace-move-window (index &optional id)
"Move window ID to workspace INDEX."
(interactive
(list
(let* ((history-add-new-input nil) ;prevent modifying history
(idx (read-from-minibuffer
"Workspace: " (elt exwm-workspace--switch-history
exwm-workspace-current-index)
exwm-workspace--switch-map nil
`(exwm-workspace--switch-history
. ,(1+ exwm-workspace-current-index)))))
(cl-position idx exwm-workspace--switch-history :test 'equal))))
(unless id (setq id (exwm--buffer->id (window-buffer))))
(unless (and (<= 0 index) (< index exwm-workspace-number))
(user-error "[EXWM] Workspace index out of range: %d" index))
(when (/= exwm-workspace-current-index index)
(set-window-buffer (get-buffer-window (exwm--id->buffer id))
(other-buffer))
(let ((frame (elt exwm-workspace--list index)))
(with-current-buffer (exwm--id->buffer id)
(setq exwm--frame frame)
(rename-buffer
(concat " " (replace-regexp-in-string "^\\s-*" "" (buffer-name))))
(if exwm--floating-frame
;; Move the floating frame is enough
(xcb:+request exwm--connection
(make-instance 'xcb:ReparentWindow
:window (frame-parameter exwm--floating-frame
'exwm-outer-id)
:parent (frame-parameter frame 'exwm-window-id)
:x 0 :y 0))
;; Move the window itself
(xcb:+request exwm--connection
(make-instance 'xcb:ChangeWindowAttributes
:window id :value-mask xcb:CW:EventMask
:event-mask xcb:EventMask:NoEvent))
(xcb:+request exwm--connection
(make-instance 'xcb:ReparentWindow
:window id
:parent (frame-parameter frame 'exwm-window-id)
:x 0 :y 0))
(xcb:+request exwm--connection
(make-instance 'xcb:ChangeWindowAttributes
:window id :value-mask xcb:CW:EventMask
:event-mask exwm--client-event-mask)))))
(xcb:flush exwm--connection)
(exwm-workspace--update-switch-history)))
(defun exwm-workspace--init ()
"Initialize workspace module."
(cl-assert (and (< 0 exwm-workspace-number) (>= 10 exwm-workspace-number)))
;; Prevent unexpected exit
(setq confirm-kill-emacs
(lambda (prompt)
(pcase (length exwm--id-buffer-alist)
(0 (y-or-n-p prompt))
(x (yes-or-no-p (format "[EXWM] %d window%s currently alive. %s"
x (if (= x 1) "" "s") prompt))))))
;; Initialize workspaces
(setq exwm-workspace--list (frame-list))
(when (< 1 (length exwm-workspace--list))
;; Emacs client creates an extra (but unusable) frame
(dolist (i exwm-workspace--list)
(unless (frame-parameter i 'window-id)
(setq exwm-workspace--list (delq i exwm-workspace--list)))))
(cl-assert (= 1 (length exwm-workspace--list)))
;; Configure the existing frame
(set-frame-parameter (car exwm-workspace--list) 'fullscreen 'fullboth)
;; Create remaining frames
(dotimes (i (1- exwm-workspace-number))
(nconc exwm-workspace--list
(list (make-frame '((window-system . x) (fullscreen . fullboth))))))
;; Configure workspaces
(dolist (i exwm-workspace--list)
(let ((window-id (string-to-int (frame-parameter i 'window-id)))
(outer-id (string-to-int (frame-parameter i 'outer-window-id))))
;; Save window IDs
(set-frame-parameter i 'exwm-window-id window-id)
(set-frame-parameter i 'exwm-outer-id outer-id)
;; Set OverrideRedirect on all frames
(xcb:+request exwm--connection
(make-instance 'xcb:ChangeWindowAttributes
:window outer-id :value-mask xcb:CW:OverrideRedirect
:override-redirect 1))
;; Select events on all virtual roots
(xcb:+request exwm--connection
(make-instance 'xcb:ChangeWindowAttributes
:window window-id :value-mask xcb:CW:EventMask
:event-mask xcb:EventMask:SubstructureRedirect))))
;; Switch to the first workspace
(exwm-workspace-switch 0 t))
(provide 'exwm-workspace)
;;; exwm-workspace.el ends here

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;;; exwm.el --- Emacs X Window Manager -*- lexical-binding: t -*-
;; Copyright (C) 2015 Chris Feng
;; Author: Chris Feng <chris.w.feng@gmail.com>
;; Keywords: unix
;; This file is not part of GNU Emacs.
;; This file 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 file 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 file. If not, see <http://www.gnu.org/licenses/>.
;;; Commentary:
;; Overview
;; --------
;; EXWM (Emacs X Window Manager) turns Emacs into a full-featured tiling X
;; window manager. It's built on top of XELB, thus purely consists of Elisp
;; codes. Some features include:
;; + It's fully keyboard-driven.
;; - You have full access to all key bindings in Emacs.
;; - It allows you to bind additional key sequences with `exwm-input-set-key'
;; (just like `global-set-key').
;; - It supports simulation keys (i.e., map one key sequence to another).
;; + Workspace support.
;; - EXWM support up to 10 workspaces.
;; + ICCCM/EWMH compliance.
;; - Note that the support for EWMH can never be complete since EXWM is not a
;; conventional window manager.
;; How it works
;; ------------
;; Emacs itself is an tiling window manager, though unfortunately not for
;; managing X things. EXWM is therefore created to overcome this limitation by
;; relating X concepts to Emacs ones as shown in the following table.
;;
;; +=============+=========+
;; | X Window | Emacs |
;; +=============+=========+
;; | window | buffer |
;; +-------------+---------+
;; | container* | window |
;; +-------------+---------+
;; | workspace / | frame** |
;; | decoration | |
;; +=============+=========+
;; * Here a container means the parent of an X client window created by window
;; manager for layout management.
;; ** In EXWM, A frame usually acts as a workspace. But for a floating window,
;; it's the decoration around the top-level window.
;;
;; Each X client window corresponds to a dedicated buffer in EXWM mode. When
;; such a buffer is buried or unburied, the attached X client window is hide or
;; shown accordingly. The position and size of the X client window is then
;; determined by the Emacs window its corresponding buffer displayed in.
;;
;; A buffer in EXWM mode also records which workspace it belongs to, and its
;; attached X client window is made a child (in the sense of X) of the
;; workspace frame. The switch between workspaces is simply done by switching
;; corresponding Emacs frames.
;; Installation & configuration
;; ----------------------------
;; Here are the minimal steps to get EXWM working:
;; 0. Install xelb and xelb-util first.
;; 1. Put EXWM somewhere on your disk and make sure it's in `load-path'.
;; 2. In your Emacs init file, add following lines (modify accordingly):
;;
;; (require 'exwm)
;; ;; We always need a way to go back from char-mode to line-mode
;; (exwm-input-set-key (kbd "s-r") 'exwm-reset)
;; ;; Bind a key to switch workspace interactively
;; (exwm-input-set-key (kbd "s-w") 'exwm-workspace-switch)
;; ;; Use class name to name an EXWM buffer
;; (add-hook 'exwm-update-class-hook
;; (lambda () (rename-buffer exwm-class-name t)))
;; ;; Enable EXWM
;; (exwm-enable)
;;
;; 3. Make a file '~/.xinitrc' with the content
;;
;; exec emacs
;;
;; 4. Launch EXWM in a console with
;;
;; xinit
;;
;; You should refer to other resources on how to further configure '~/.xinitrc'
;; and other init scripts to improve the working experience. Besides, you
;; should hide the menu-bar, tool-bar, etc to increase the usable space.
;; Interactive modes
;; -----------------
;; There are two modes in EXWM to interact with an X client window: line mode
;; and char mode. They are analogous to those concepts in `ansi-term'. EXWM
;; buffers are created in line mode by default.
;;
;; In line mode, all key events are intercepted and then forwarded to the X
;; client window except
;; + it forms a mode-specific key sequence (which begins with 'C-c'), or
;; + it forms a key sequence bound with `exwm-input-set-key', or
;; + it forms a key sequence starting with a line mode prefix key, or
;; + it forms a key sequence in line mode simulation keys.
;; You can use 'C-c q' (bound to `exwm-input-send-next-key', can be 'C-u'
;; prefixed) to send these keys to the client.
;;
;; In char mode however, no key event is intercepted except those bound with
;; `exwm-input-set-key'. Therefore you will almost always need to
;; 'exwm-input-set-key' a key sequence to go from char mode to line mode.
;; Related projects
;; ----------------
;; EXWM is not the first attempt to make Emacs an X window manger; there is
;; another ancient project called XWEM (http://www.nongnu.org/xwem/) for
;; XEmacs, though it seems nobody have ever got it working on GNU Emacs.
;; Todo:
;; + Add RandR support.
;; + Investigate DnD support (e.g. drag a chromium tab to another window).
;; + Auto hide minibuffer, or allow users to place it elsewhere.
;; + Add system tray support.
;; References:
;; + dwm (http://dwm.suckless.org/)
;; + i3 wm (https://i3wm.org/)
;; + Also see references within each required library.
;;; Code:
(require 'xcb)
(require 'xcb-icccm)
(require 'xcb-ewmh)
(require 'exwm-workspace)
(require 'exwm-layout)
(require 'exwm-floating)
(require 'exwm-manage)
(require 'exwm-input)
(defvar exwm-debug-on nil "Non-nil to turn on debug for EXWM.")
(defmacro exwm--log (format-string &rest args)
"Print debug message."
(when exwm-debug-on
`(message (concat "[EXWM] " ,format-string) ,@args)))
(defconst exwm--client-event-mask
(logior xcb:EventMask:StructureNotify xcb:EventMask:PropertyChange)
"Event mask set on all managed windows.")
(defvar exwm--connection nil "X connection.")
(defvar exwm--root nil "Root window.")
(defvar exwm--id-buffer-alist nil "Alist of (<X window ID> . <Emacs buffer>)")
(defsubst exwm--id->buffer (id)
"X window ID => Emacs buffer."
(cdr (assoc id exwm--id-buffer-alist)))
(defsubst exwm--buffer->id (buffer)
"Emacs buffer => X window ID."
(car (rassoc buffer exwm--id-buffer-alist)))
(defun exwm--lock (&rest args) ;args are for abnormal hook
"Lock (disable all events)."
(xcb:+request exwm--connection
(make-instance 'xcb:ChangeWindowAttributes
:window exwm--root
:value-mask xcb:CW:EventMask
:event-mask xcb:EventMask:NoEvent))
(xcb:flush exwm--connection))
(defun exwm--unlock (&rest args) ;args are for abnormal hook
"Unlock (enable all events)."
(xcb:+request exwm--connection
(make-instance 'xcb:ChangeWindowAttributes
:window exwm--root
:value-mask xcb:CW:EventMask
:event-mask (logior xcb:EventMask:StructureNotify
xcb:EventMask:SubstructureRedirect)))
(xcb:flush exwm--connection))
(defun exwm-reset ()
"Reset window to standard state: non-fullscreen, line-mode."
(interactive)
(with-current-buffer (window-buffer (selected-window))
(when exwm--fullscreen (exwm-layout-unset-fullscreen))
(exwm-input-grab-keyboard)))
(defmacro exwm--with-current-id (id &rest body)
"Evaluate BODY in the context of the buffer corresponding to window ID."
(declare (indent 1))
`(when ,id
(let ((buffer (exwm--id->buffer ,id)))
(when buffer
(with-current-buffer buffer ,@body)))))
(defun exwm--update-window-type (id &optional force)
"Update _NET_WM_WINDOW_TYPE."
(exwm--with-current-id id
(unless (and exwm-window-type (not force))
(let ((reply (xcb:+request-unchecked+reply exwm--connection
(make-instance 'xcb:ewmh:get-_NET_WM_WINDOW_TYPE
:window id))))
(when reply ;nil when destroyed
(setq exwm-window-type (append (slot-value reply 'value) nil)))))))
(defvar exwm-update-class-hook nil
"Normal hook run when window class is updated.")
(defun exwm--update-class (id &optional force)
"Update WM_CLASS."
(exwm--with-current-id id
(unless (and exwm-instance-name exwm-class-name (not force))
(let ((reply (xcb:+request-unchecked+reply exwm--connection
(make-instance 'xcb:icccm:get-WM_CLASS :window id))))
(when reply ;nil when destroyed
(setq exwm-instance-name (slot-value reply 'instance-name)
exwm-class-name (slot-value reply 'class-name))
(when (and exwm-instance-name exwm-class-name)
(run-hooks 'exwm-update-class-hook)))))))
(defvar exwm-update-title-hook nil
"Normal hook run when window title is updated.")
(defun exwm--update-utf8-title (id &optional force)
"Update _NET_WM_NAME."
(exwm--with-current-id id
(when (or force (not exwm-title))
(let ((reply (xcb:+request-unchecked+reply exwm--connection
(make-instance 'xcb:ewmh:get-_NET_WM_NAME :window id))))
(when reply ;nil when destroyed
(setq exwm-title (slot-value reply 'value))
(when exwm-title
(setq exwm--title-is-utf8 t)
(run-hooks 'exwm-update-title-hook)))))))
(defun exwm--update-ctext-title (id &optional force)
"Update WM_NAME."
(exwm--with-current-id id
(unless (or exwm--title-is-utf8
(and exwm-title (not force)))
(let ((reply (xcb:+request-unchecked+reply exwm--connection
(make-instance 'xcb:icccm:get-WM_NAME :window id))))
(when reply ;nil when destroyed
(setq exwm-title (slot-value reply 'value))
(when exwm-title
(run-hooks 'exwm-update-title-hook)))))))
(defun exwm--update-title (id)
"Update _NET_WM_NAME or WM_NAME."
(exwm--update-utf8-title id)
(exwm--update-ctext-title id))
(defun exwm--update-transient-for (id &optional force)
"Update WM_TRANSIENT_FOR."
(exwm--with-current-id id
(unless (and exwm-transient-for (not force))
(let ((reply (xcb:+request-unchecked+reply exwm--connection
(make-instance 'xcb:icccm:get-WM_TRANSIENT_FOR
:window id))))
(when reply ;nil when destroyed
(setq exwm-transient-for (slot-value reply 'value)))))))
(defun exwm--update-normal-hints (id &optional force)
"Update WM_NORMAL_HINTS."
(exwm--with-current-id id
(unless (and (not force)
(or exwm--normal-hints-x exwm--normal-hints-y
exwm--normal-hints-width exwm--normal-hints-height
exwm--normal-hints-min-width exwm--normal-hints-min-height
exwm--normal-hints-max-width exwm--normal-hints-max-height
;; FIXME: other fields
))
(let ((reply (xcb:+request-unchecked+reply exwm--connection
(make-instance 'xcb:icccm:get-WM_NORMAL_HINTS
:window id))))
(when (and reply (slot-value reply 'flags)) ;nil when destroyed
(with-slots (flags x y width height min-width min-height max-width
max-height base-width base-height ;; win-gravity
)
reply
(unless (= 0 (logand flags xcb:icccm:WM_SIZE_HINTS:USPosition))
(setq exwm--normal-hints-x x exwm--normal-hints-y y))
(unless (= 0 (logand flags xcb:icccm:WM_SIZE_HINTS:USSize))
(setq exwm--normal-hints-width width
exwm--normal-hints-height height))
(unless (= 0 (logand flags xcb:icccm:WM_SIZE_HINTS:PMinSize))
(setq exwm--normal-hints-min-width min-width
exwm--normal-hints-min-height min-height))
(unless (= 0 (logand flags xcb:icccm:WM_SIZE_HINTS:PMaxSize))
(setq exwm--normal-hints-max-width max-width
exwm--normal-hints-max-height max-height))
(unless (or exwm--normal-hints-min-width
(= 0 (logand flags xcb:icccm:WM_SIZE_HINTS:PBaseSize)))
(setq exwm--normal-hints-min-width base-width
exwm--normal-hints-min-height base-height))
;; (unless (= 0 (logand flags xcb:icccm:WM_SIZE_HINTS:PWinGravity))
;; (setq exwm--normal-hints-win-gravity win-gravity))
(setq exwm--fixed-size
(and exwm--normal-hints-min-width
exwm--normal-hints-min-height
exwm--normal-hints-max-width
exwm--normal-hints-max-height
(/= 0 exwm--normal-hints-min-width)
(/= 0 exwm--normal-hints-min-height)
(= exwm--normal-hints-min-width
exwm--normal-hints-max-width)
(= exwm--normal-hints-min-height
exwm--normal-hints-max-height)))))))))
(defun exwm--update-hints (id &optional force)
"Update WM_HINTS."
(exwm--with-current-id id
(unless (and (not force) exwm--hints-input exwm--hints-urgency)
(let ((reply (xcb:+request-unchecked+reply exwm--connection
(make-instance 'xcb:icccm:get-WM_HINTS :window id))))
(when (and reply (slot-value reply 'flags)) ;nil when destroyed
(with-slots (flags input) reply
(when flags
(unless (= 0 (logand flags xcb:icccm:WM_HINTS:InputHint))
(setq exwm--hints-input (when input (= 1 input))))
(unless (= 0 (logand flags xcb:icccm:WM_HINTS:UrgencyHint))
(setq exwm--hints-urgency t))))
(when (and exwm--hints-urgency
(not (eq exwm--frame exwm-workspace--current)))
(unless (frame-parameter exwm--frame 'exwm--urgency)
(set-frame-parameter exwm--frame 'exwm--urgency t)
(exwm-workspace--update-switch-history))))))))
(defun exwm--update-protocols (id &optional force)
"Update WM_PROTOCOLS."
(exwm--with-current-id id
(unless (and exwm--protocols (not force))
(let ((reply (xcb:+request-unchecked+reply exwm--connection
(make-instance 'xcb:icccm:get-WM_PROTOCOLS
:window id))))
(when reply ;nil when destroyed
(setq exwm--protocols (append (slot-value reply 'value) nil)))))))
(defun exwm--update-state (id &optional force)
"Update WM_STATE."
(exwm--with-current-id id
(unless (and exwm-state (not force))
(let ((reply (xcb:+request-unchecked+reply exwm--connection
(make-instance 'xcb:icccm:get-WM_STATE :window id))))
(when reply ;nil when destroyed
(setq exwm-state (or (slot-value reply 'state)
;; Default to normal state
xcb:icccm:WM_STATE:NormalState)))))))
(defun exwm--on-PropertyNotify (data synthetic)
"Handle PropertyNotify event."
(let ((obj (make-instance 'xcb:PropertyNotify))
atom window state
buffer)
(xcb:unmarshal obj data)
(setq id (slot-value obj 'window)
atom (slot-value obj 'atom)
exwm-input--timestamp (slot-value obj 'time)
state (slot-value obj 'state))
(setq buffer (exwm--id->buffer id))
(when (buffer-live-p buffer)
(with-current-buffer buffer
(cond ((= atom xcb:Atom:_NET_WM_WINDOW_TYPE)
(exwm--update-window-type id t))
((= atom xcb:Atom:WM_CLASS)
(exwm--update-class id t))
((= atom xcb:Atom:_NET_WM_NAME)
(exwm--update-utf8-title id t))
((= atom xcb:Atom:WM_NAME)
(exwm--update-ctext-title id t))
((= atom xcb:Atom:WM_TRANSIENT_FOR)
(exwm--update-transient-for id t))
((= atom xcb:Atom:WM_NORMAL_HINTS)
(exwm--update-normal-hints id t))
((= atom xcb:Atom:WM_HINTS)
(exwm--update-hints id t))
((= atom xcb:Atom:WM_PROTOCOLS)
(exwm--update-protocols id t))
((= atom xcb:Atom:WM_STATE)
(exwm--update-state id t))
(t (exwm--log "Unhandled PropertyNotify: %s(%d)"
(x-get-atom-name atom) atom)))))))
(defun exwm--on-ClientMessage (raw-data synthetic)
"Handle ClientMessage event."
(let ((obj (make-instance 'xcb:ClientMessage))
type id data)
(xcb:unmarshal obj raw-data)
(setq type (slot-value obj 'type)
id (slot-value obj 'window)
data (slot-value (slot-value obj 'data) 'data32))
(cond
;; _NET_WM_MOVERESIZE
((= type xcb:Atom:_NET_WM_MOVERESIZE)
(let ((direction (elt data 2))
(buffer (exwm--id->buffer id)))
(unless (and buffer (with-current-buffer buffer
(not exwm--floating-frame)))
(cond ((= direction
xcb:ewmh:_NET_WM_MOVERESIZE_SIZE_KEYBOARD)
;; FIXME
)
((= direction
xcb:ewmh:_NET_WM_MOVERESIZE_MOVE_KEYBOARD)
;; FIXME
)
((= direction xcb:ewmh:_NET_WM_MOVERESIZE_CANCEL)
(exwm-floating--stop-moveresize))
(t (exwm-floating--start-moveresize id direction))))))
;; _NET_REQUEST_FRAME_EXTENTS
((= type xcb:Atom:_NET_REQUEST_FRAME_EXTENTS)
(let ((buffer (exwm--id->buffer id))
left right top bottom)
(if (or (not buffer)
(with-current-buffer buffer
(not exwm--floating-frame)))
(setq left 0 right 0 top 0 bottom 0)
(setq left exwm-floating-border-width
right exwm-floating-border-width
top (+ exwm-floating-border-width (window-header-line-height))
bottom (+ exwm-floating-border-width
(window-mode-line-height))))
(xcb:+request exwm--connection
(make-instance 'xcb:ewmh:set-_NET_FRAME_EXTENTS
:window id :left left :right right
:top top :bottom bottom)))
(xcb:flush exwm--connection))
;; _NET_WM_STATE
((= type xcb:Atom:_NET_WM_STATE)
(let ((action (elt data 0))
(props (list (elt data 1) (elt data 2)))
(buffer (exwm--id->buffer id))
props-new)
(when buffer ;ensure it's managed
(with-current-buffer buffer
;; _NET_WM_STATE_MODAL
(when (memq xcb:Atom:_NET_WM_STATE_MODAL props)
(cond ((= action xcb:ewmh:_NET_WM_STATE_ADD)
(unless exwm--floating-frame
(exwm-floating--set-floating id))
(push xcb:Atom:_NET_WM_STATE_MODAL props-new))
((= action xcb:ewmh:_NET_WM_STATE_REMOVE)
(when exwm--floating-frame
(exwm-floating--unset-floating id)))
((= action xcb:ewmh:_NET_WM_STATE_TOGGLE)
(if exwm--floating-frame
(exwm-floating--unset-floating id)
(exwm-floating--set-floating id)
(push xcb:Atom:_NET_WM_STATE_MODAL props-new)))))
;; _NET_WM_STATE_FULLSCREEN
(when (memq xcb:Atom:_NET_WM_STATE_FULLSCREEN props)
(cond ((= action xcb:ewmh:_NET_WM_STATE_ADD)
(unless exwm--fullscreen (exwm-layout-set-fullscreen id))
(push xcb:Atom:_NET_WM_STATE_FULLSCREEN props-new))
((= action xcb:ewmh:_NET_WM_STATE_REMOVE)
(when exwm--fullscreen (exwm-layout-unset-fullscreen id)))
((= action xcb:ewmh:_NET_WM_STATE_TOGGLE)
(if exwm--fullscreen
(exwm-layout-unset-fullscreen id)
(exwm-layout-set-fullscreen id)
(push xcb:Atom:_NET_WM_STATE_FULLSCREEN props-new)))))
;; _NET_WM_STATE_DEMANDS_ATTENTION
;; FIXME: check (may require other properties set)
(when (memq xcb:Atom:_NET_WM_STATE_DEMANDS_ATTENTION props)
(when (= action xcb:ewmh:_NET_WM_STATE_ADD)
(let ((idx (cl-position exwm--frame exwm-workspace--list)))
(unless (= idx exwm-workspace-current-index)
(set-frame-parameter exwm--frame 'exwm--urgency t)
(exwm-workspace--update-switch-history))))
;; xcb:ewmh:_NET_WM_STATE_REMOVE?
;; xcb:ewmh:_NET_WM_STATE_TOGGLE?
)
(xcb:+request exwm--connection
(make-instance 'xcb:ewmh:set-_NET_WM_STATE
:window id :data (vconcat props-new)))
(xcb:flush exwm--connection)))))
((= type xcb:Atom:WM_PROTOCOLS)
(let ((type (elt data 0)))
(cond ((= type xcb:Atom:_NET_WM_PING)
(setq exwm--ping-lock nil))
(t (exwm--log "Unhandled WM_PROTOCOLS of type: %d" type)))))
(t (exwm--log "Unhandled client message: %s" obj)))))
(defun exwm--init-icccm-ewmh ()
"Initialize ICCCM/EWMH support."
;; Handle PropertyNotify event
(xcb:+event exwm--connection 'xcb:PropertyNotify 'exwm--on-PropertyNotify)
;; Handle relevant client messages
;; FIXME: WM_STATE client messages (normal => iconic)
;; WM_COLORMAP_NOTIFY
(xcb:+event exwm--connection 'xcb:ClientMessage 'exwm--on-ClientMessage)
;; Set _NET_SUPPORTED
(xcb:+request exwm--connection
(make-instance 'xcb:ewmh:set-_NET_SUPPORTED
:window exwm--root
:data (vector xcb:Atom:_NET_SUPPORTED
xcb:Atom:_NET_NUMBER_OF_DESKTOPS
xcb:Atom:_NET_DESKTOP_VIEWPORT
xcb:Atom:_NET_CURRENT_DESKTOP
xcb:Atom:_NET_WORKAREA
xcb:Atom:_NET_SUPPORTING_WM_CHECK
xcb:Atom:_NET_VIRTUAL_ROOTS
xcb:Atom:_NET_WM_MOVERESIZE
xcb:Atom:_NET_REQUEST_FRAME_EXTENTS
xcb:Atom:_NET_FRAME_EXTENTS
xcb:Atom:_NET_WM_NAME
;;
xcb:Atom:_NET_WM_WINDOW_TYPE
xcb:Atom:_NET_WM_WINDOW_TYPE_TOOLBAR
xcb:Atom:_NET_WM_WINDOW_TYPE_MENU
xcb:Atom:_NET_WM_WINDOW_TYPE_UTILITY
xcb:Atom:_NET_WM_WINDOW_TYPE_SPLASH
xcb:Atom:_NET_WM_WINDOW_TYPE_DIALOG
xcb:Atom:_NET_WM_WINDOW_TYPE_DROPDOWN_MENU
xcb:Atom:_NET_WM_WINDOW_TYPE_POPUP_MENU
xcb:Atom:_NET_WM_WINDOW_TYPE_TOOLTIP
xcb:Atom:_NET_WM_WINDOW_TYPE_NOTIFICATION
xcb:Atom:_NET_WM_WINDOW_TYPE_COMBO
xcb:Atom:_NET_WM_WINDOW_TYPE_DND
xcb:Atom:_NET_WM_WINDOW_TYPE_NORMAL
;;
xcb:Atom:_NET_WM_STATE
xcb:Atom:_NET_WM_STATE_MODAL
xcb:Atom:_NET_WM_STATE_FULLSCREEN
xcb:Atom:_NET_WM_STATE_DEMANDS_ATTENTION
;; FIXME: more?
)))
;; Create a child window for setting _NET_SUPPORTING_WM_CHECK
(let ((new-id (xcb:generate-id exwm--connection)))
(xcb:+request exwm--connection
(make-instance 'xcb:CreateWindow
:depth 0 :wid new-id :parent exwm--root
:x -1 :y -1 :width 1 :height 1
:border-width 0 :class xcb:WindowClass:CopyFromParent
:visual 0 :value-mask xcb:CW:OverrideRedirect
:override-redirect 1))
(dolist (i (list exwm--root new-id))
;; Set _NET_SUPPORTING_WM_CHECK
(xcb:+request exwm--connection
(make-instance 'xcb:ewmh:set-_NET_SUPPORTING_WM_CHECK
:window i :data new-id))
;; Set _NET_WM_NAME
(xcb:+request exwm--connection
(make-instance 'xcb:ewmh:set-_NET_WM_NAME
:window i :data "EXWM"))))
;; Set _NET_NUMBER_OF_DESKTOPS
(xcb:+request exwm--connection
(make-instance 'xcb:ewmh:set-_NET_NUMBER_OF_DESKTOPS
:window exwm--root :data exwm-workspace-number))
;; Set _NET_DESKTOP_VIEWPORT
(xcb:+request exwm--connection
(make-instance 'xcb:ewmh:set-_NET_DESKTOP_VIEWPORT
:window exwm--root
:data (make-vector (* 2 exwm-workspace-number) 0)))
;; Set _NET_WORKAREA (with minibuffer and bottom mode-line excluded)
(let* ((workareas
(vconcat (window-absolute-pixel-edges (get-largest-window t))))
(workareas (mapconcat (lambda (i) workareas)
(make-list exwm-workspace-number 0) [])))
(xcb:+request exwm--connection
(make-instance 'xcb:ewmh:set-_NET_WORKAREA
:window exwm--root :data workareas)))
;; Set _NET_VIRTUAL_ROOTS
(xcb:+request exwm--connection
(make-instance 'xcb:ewmh:set-_NET_VIRTUAL_ROOTS
:window exwm--root
:data (vconcat (mapcar
(lambda (i)
(frame-parameter i 'exwm-window-id))
exwm-workspace--list))))
(xcb:flush exwm--connection))
(defvar exwm-init-hook nil
"Normal hook run when EXWM has just finished initialization.")
(defun exwm-init (&optional frame)
"Initialize EXWM."
(if (not (eq 'x (framep (or frame (selected-frame)))))
(exwm--log "Not running under X environment")
(unless exwm--connection
(setq exwm--connection (xcb:connect-to-socket))
(set-process-query-on-exit-flag (slot-value exwm--connection 'process)
nil) ;prevent query message on exit
(setq exwm--root
(slot-value (car (slot-value
(xcb:get-setup exwm--connection) 'roots))
'root))
(if (xcb:+request-checked+request-check exwm--connection
(make-instance 'xcb:ChangeWindowAttributes
:window exwm--root :value-mask xcb:CW:EventMask
:event-mask xcb:EventMask:SubstructureRedirect))
;; Other window manager is running
(progn (xcb:disconnect exwm--connection)
(setq exwm--connection nil)
(exwm-enable 'undo)
(exwm--log "Other window manager detected"))
;; Initialize ICCCM/EWMH support
;; (xcb:icccm:init exwm--connection)
(xcb:ewmh:init exwm--connection)
(exwm--lock)
(exwm-workspace--init)
(exwm--init-icccm-ewmh)
(exwm-layout--init)
(exwm-floating--init)
(exwm-manage--init)
(exwm-input--init)
(exwm--unlock)
;; Disable events during new frame creation
(add-hook 'before-make-frame-hook 'exwm--lock)
(add-hook 'after-make-frame-functions 'exwm--unlock)
;; Manage exiting windows
(exwm-manage--scan)
(run-hooks 'exwm-init-hook)))))
(defvar exwm-mode-map
(let ((map (make-sparse-keymap)))
(define-key map "\C-ck" 'exwm-input-release-keyboard)
(define-key map "\C-cf" 'exwm-layout-set-fullscreen)
(define-key map "\C-cm" 'exwm-floating-toggle-floating)
(define-key map "\C-cq" 'exwm-input-send-next-key)
(define-key map "\C-cv" 'exwm-workspace-move-window)
map)
"Keymap for `exwm-mode'.")
(define-derived-mode exwm-mode nil "EXWM"
"Major mode for managing X windows.
\\{exwm-mode-map}"
;; Internal variables
(make-local-variable 'exwm--id) ;window id
(set (make-local-variable 'exwm--frame) nil) ;workspace frame
(set (make-local-variable 'exwm--floating-frame) nil) ;floating frame
(set (make-local-variable 'exwm--floating-edges) nil) ;four edges
(set (make-local-variable 'exwm--fullscreen) nil) ;used in fullscreen
(set (make-local-variable 'exwm--floating-frame-geometry) nil) ;in fullscreen
(set (make-local-variable 'exwm--fixed-size) nil) ;fixed size
;; Properties
(set (make-local-variable 'exwm-window-type) nil)
(set (make-local-variable 'exwm--geometry) nil)
(set (make-local-variable 'exwm-class-name) nil)
(set (make-local-variable 'exwm-instance-name) nil)
(set (make-local-variable 'exwm-title) nil)
(set (make-local-variable 'exwm--title-is-utf8) nil)
(set (make-local-variable 'exwm-transient-for) nil)
;; _NET_WM_NORMAL_HINTS
(set (make-local-variable 'exwm--normal-hints-x) nil)
(set (make-local-variable 'exwm--normal-hints-y) nil)
(set (make-local-variable 'exwm--normal-hints-width) nil)
(set (make-local-variable 'exwm--normal-hints-height) nil)
(set (make-local-variable 'exwm--normal-hints-min-width) nil)
(set (make-local-variable 'exwm--normal-hints-min-height) nil)
(set (make-local-variable 'exwm--normal-hints-max-width) nil)
(set (make-local-variable 'exwm--normal-hints-max-height) nil)
;; (set (make-local-variable 'exwm--normal-hints-win-gravity) nil)
;; WM_HINTS
(set (make-local-variable 'exwm--hints-input) nil) ;FIXME
(set (make-local-variable 'exwm--hints-urgency) nil)
;;
(set (make-local-variable 'exwm--protocols) nil)
(set (make-local-variable 'exwm-state) nil)
;; Change major-mode is not allowed
(set (make-local-variable 'change-major-mode-hook) 'kill-buffer)
;;
(setq mode-name
'(:eval (propertize "EXWM" 'face
(when (cl-some (lambda (i)
(frame-parameter i
'exwm--urgency))
exwm-workspace--list)
'font-lock-warning-face))))
;; Kill buffer -> close window
(set (make-local-variable 'kill-buffer-query-functions)
(list (lambda ()
(exwm-manage--close-window exwm--id (current-buffer))
nil)))
(setq buffer-read-only t
left-margin-width nil
right-margin-width nil
left-fringe-width 0
right-fringe-width 0
vertical-scroll-bar nil))
(defun exwm-enable (&optional undo)
"Enable/Disable EXWM"
(setq frame-resize-pixelwise t) ;mandatory; before init
(if (eq undo 'undo)
(progn (remove-hook 'window-setup-hook 'exwm-init)
(remove-hook 'after-make-frame-functions 'exwm-init))
(add-hook 'window-setup-hook 'exwm-init t) ;for Emacs
(add-hook 'after-make-frame-functions 'exwm-init t))) ;for Emacs Client
(provide 'exwm)
;;; exwm.el ends here