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GNU GENERAL PUBLIC LICENSE
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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