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exwm-workspace.el
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;;; exwm-workspace.el --- Workspace Module for EXWM -*- lexical-binding: t -*-
;; Copyright (C) 1015-2024 Free Software Foundation, Inc.
;; Author: Chris Feng <chris.w.feng@gmail.com>
;; This file is part of GNU Emacs.
;; GNU Emacs 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.
;; GNU Emacs 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 GNU Emacs. If not, see <http://www.gnu.org/licenses/>.
;;; Commentary:
;; This module adds workspace support for EXWM.
;;; Code:
(require 'server)
(require 'exwm-core)
(defgroup exwm-workspace nil
"Workspace."
:group 'exwm)
(defcustom exwm-workspace-switch-hook nil
"Normal hook run after switching workspace."
:type 'hook)
(defcustom exwm-workspace-list-change-hook nil
"Normal hook run when the workspace list is changed.
This happens when a workspace is added, deleted, moved, etc."
:type 'hook)
(defcustom exwm-workspace-show-all-buffers nil
"Non-nil to show buffers on other workspaces."
:type 'boolean)
(defcustom exwm-workspace-warp-cursor nil
"Non-nil to warp cursor automatically after workspace switch."
:type 'boolean)
(defcustom exwm-workspace-number 1
"Initial number of workspaces."
:type 'integer)
(defcustom exwm-workspace-index-map #'number-to-string
"Function for mapping a workspace index to a string for display.
By default `number-to-string' is applied which yields 0 1 2 ... ."
:type 'function)
(defcustom exwm-workspace-minibuffer-position nil
"Position of the minibuffer frame.
A restart is required for this change to take effect."
:type '(choice (const :tag "Bottom (fixed)" nil)
(const :tag "Bottom (auto-hide)" bottom)
(const :tag "Top (auto-hide)" top)))
(defcustom exwm-workspace-display-echo-area-timeout 1
"Timeout for displaying echo area."
:type 'integer)
(defcustom exwm-workspace-switch-create-limit 10
"Number of workspaces `exwm-workspace-switch-create' is allowed to create."
:type 'integer)
(defvar exwm-workspace-current-index 0 "Index of current active workspace.")
(defvar exwm-workspace--attached-minibuffer-height 0
"Height (in pixel) of the attached minibuffer.
If the minibuffer is detached, this value is 0.")
(defvar exwm-workspace--create-silently nil
"When non-nil workspaces are created in the background (not switched to).
Please manually run the hook `exwm-workspace-list-change-hook' afterwards.")
(defvar exwm-workspace--current nil "Current active workspace.")
(defvar exwm-workspace--display-echo-area-timer nil
"Timer for auto-hiding echo area.")
(defvar exwm-workspace--id-struts-alist nil "Alist of X window and struts.")
(defvar exwm-workspace--fullscreen-frame-count 0
"Count the fullscreen workspace frames.")
(defvar exwm-workspace--list nil "List of all workspaces (Emacs frames).")
(defvar exwm-workspace--minibuffer nil
"The minibuffer frame shared among all frames.")
(defvar exwm-workspace--original-handle-focus-in
(symbol-function #'handle-focus-in))
(defvar exwm-workspace--original-handle-focus-out
(symbol-function #'handle-focus-out))
(defvar exwm-workspace--prompt-add-allowed nil
"Non-nil to allow adding workspace from the prompt.")
(defvar exwm-workspace--prompt-delete-allowed nil
"Non-nil to allow deleting workspace from the prompt.")
(defvar exwm-workspace--struts nil "Areas occupied by struts.")
(defvar exwm-workspace--switch-history nil
"History for `read-from-minibuffer' to interactively switch workspace.")
(defvar exwm-workspace--switch-history-outdated nil
"Non-nil to indicate `exwm-workspace--switch-history' is outdated.")
(defvar exwm-workspace--timer nil "Timer used to track echo area changes.")
(defvar exwm-workspace--update-workareas-hook nil
"Normal hook run when workareas get updated.")
(defvar exwm-workspace--workareas nil "Workareas (struts excluded).")
(defvar exwm-workspace--frame-y-offset 0
"Offset between Emacs inner & outer frame in Y.")
(defvar exwm-workspace--window-y-offset 0
"Offset between Emacs first window & outer frame in Y.")
(defvar exwm-input--during-command)
(defvar exwm-input--event-hook)
(defvar exwm-layout-show-all-buffers)
(defvar exwm-manage--desktop)
(declare-function exwm-input--on-buffer-list-update "exwm-input.el" ())
(declare-function exwm-layout--fullscreen-p "exwm-layout.el" ())
(declare-function exwm-layout--hide "exwm-layout.el" (id))
(declare-function exwm-layout--other-buffer-predicate "exwm-layout.el"
(buffer))
(declare-function exwm-layout--refresh "exwm-layout.el")
(declare-function exwm-layout--show "exwm-layout.el" (id &optional window))
(defsubst exwm-workspace--position (frame)
"Retrieve index of given FRAME in workspace list.
NIL if FRAME is not a workspace."
(declare (indent defun))
(cl-position frame exwm-workspace--list))
(defsubst exwm-workspace--count ()
"Retrieve total number of workspaces."
(length exwm-workspace--list))
(defsubst exwm-workspace--workspace-p (frame)
"Return t if FRAME is a workspace."
(declare (indent defun))
(memq frame exwm-workspace--list))
(defsubst exwm-workspace--workarea (frame)
"Return workarea corresponding to FRAME.
FRAME may be either a workspace frame or a workspace position."
(declare (indent defun))
(elt exwm-workspace--workareas
(if (integerp frame)
frame
(exwm-workspace--position frame))))
(defvar exwm-workspace--switch-map nil
"Keymap used for interactively selecting workspace.")
(defun exwm-workspace--init-switch-map ()
"Initialize variable `exwm-workspace--switch-map'."
(let ((map (make-sparse-keymap)))
(define-key map [t] (lambda () (interactive)))
(define-key map "+" #'exwm-workspace--prompt-add)
(define-key map "-" #'exwm-workspace--prompt-delete)
(dotimes (i 10)
(define-key map (int-to-string i)
#'exwm-workspace--switch-map-nth-prefix))
(unless (eq exwm-workspace-index-map #'number-to-string)
;; Add extra (and possibly override) keys for selecting workspace.
(dotimes (i 10)
(let ((key (funcall exwm-workspace-index-map i)))
(when (and (stringp key)
(= (length key) 1)
(<= 0 (elt key 0) 127))
(define-key map key
(lambda ()
(interactive)
(exwm-workspace--switch-map-select-nth i)))))))
(define-key map "\C-a" (lambda () (interactive) (goto-history-element 1)))
(define-key map "\C-e" (lambda ()
(interactive)
(goto-history-element (exwm-workspace--count))))
(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)
(setq exwm-workspace--switch-map map)))
(defun exwm-workspace--workspace-from-frame-or-index (frame-or-index)
"Retrieve the workspace frame from FRAME-OR-INDEX."
(cond
((framep frame-or-index)
(unless (exwm-workspace--position frame-or-index)
(user-error "[EXWM] Frame is not a workspace %S" frame-or-index))
frame-or-index)
((integerp frame-or-index)
(unless (and (<= 0 frame-or-index)
(< frame-or-index (exwm-workspace--count)))
(user-error "[EXWM] Workspace index out of range: %d" frame-or-index))
(elt exwm-workspace--list frame-or-index))
(t (user-error "[EXWM] Invalid workspace: %s" frame-or-index))))
(defun exwm-workspace--prompt-for-workspace (&optional prompt)
"Prompt for a workspace, returning the workspace frame.
Show PROMPT to the user if non-nil."
(exwm-workspace--update-switch-history)
(let* ((current-idx (exwm-workspace--position exwm-workspace--current))
(history-add-new-input nil) ;prevent modifying history
(history-idx (read-from-minibuffer
(or prompt "Workspace: ")
(elt exwm-workspace--switch-history current-idx)
exwm-workspace--switch-map nil
`(exwm-workspace--switch-history . ,(1+ current-idx))))
(workspace-idx (cl-position history-idx exwm-workspace--switch-history
:test #'equal)))
(elt exwm-workspace--list workspace-idx)))
(defun exwm-workspace--prompt-add ()
"Add workspace from the prompt."
(interactive)
(when exwm-workspace--prompt-add-allowed
(let ((exwm-workspace--create-silently t))
(make-frame)
(run-hooks 'exwm-workspace-list-change-hook))
(exwm-workspace--update-switch-history)
(goto-history-element minibuffer-history-position)))
(defun exwm-workspace--prompt-delete ()
"Delete workspace from the prompt."
(interactive)
(when (and exwm-workspace--prompt-delete-allowed
(< 1 (exwm-workspace--count)))
(let ((frame (elt exwm-workspace--list (1- minibuffer-history-position))))
(if (eq frame exwm-workspace--current)
;; Abort the recursive minibuffer if deleting the current workspace.
(progn
(exwm--defer 0 #'delete-frame frame)
(abort-recursive-edit))
(delete-frame frame)
(exwm-workspace--update-switch-history)
(goto-history-element (min minibuffer-history-position
(exwm-workspace--count)))))))
(defun exwm-workspace--update-switch-history ()
"Update the history for switching workspace to reflect the latest status."
(when exwm-workspace--switch-history-outdated
(setq exwm-workspace--switch-history-outdated nil)
(let* ((num (exwm-workspace--count))
(sequence (number-sequence 0 (1- num)))
(not-empty (make-vector num nil)))
(dolist (i exwm--id-buffer-alist)
(with-current-buffer (cdr i)
(when exwm--frame
(setf (aref not-empty
(exwm-workspace--position exwm--frame))
t))))
(setq exwm-workspace--switch-history
(mapcar
(lambda (i)
(mapconcat
(lambda (j)
(format (if (= i j) "[%s]" " %s ")
(propertize
(apply exwm-workspace-index-map (list j))
'face
(cond ((frame-parameter (elt exwm-workspace--list j)
'exwm-urgency)
'(:foreground "orange"))
((aref not-empty j) '(:foreground "green"))
(t nil)))))
sequence ""))
sequence)))))
;;;###autoload
(defun exwm-workspace--get-geometry (frame)
"Return the geometry of frame FRAME."
(or (frame-parameter frame 'exwm-geometry)
(make-instance 'xcb:RECTANGLE
:x 0
:y 0
:width (x-display-pixel-width)
:height (x-display-pixel-height))))
;;;###autoload
(defun exwm-workspace--current-height ()
"Return the height of current workspace."
(let ((geometry (frame-parameter exwm-workspace--current 'exwm-geometry)))
(if geometry
(slot-value geometry 'height)
(x-display-pixel-height))))
;;;###autoload
(defun exwm-workspace--minibuffer-own-frame-p ()
"Reports whether the minibuffer is displayed in its own frame."
(memq exwm-workspace-minibuffer-position '(top bottom)))
(defun exwm-workspace--update-struts ()
"Update `exwm-workspace--struts'."
(setq exwm-workspace--struts nil)
(let (struts struts*)
(dolist (pair exwm-workspace--id-struts-alist)
(setq struts (cdr pair))
(when struts
(dotimes (i 4)
(when (/= 0 (aref struts i))
(setq struts*
(vector (aref [left right top bottom] i)
(aref struts i)
(when (= 12 (length struts))
(substring struts (+ 4 (* i 2)) (+ 6 (* i 2))))))
(if (= 0 (mod i 2))
;; Make left/top processed first.
(push struts* exwm-workspace--struts)
(setq exwm-workspace--struts
(append exwm-workspace--struts (list struts*))))))))
(exwm--log "%s" exwm-workspace--struts)))
(defun exwm-workspace--update-workareas ()
"Update `exwm-workspace--workareas'."
(let* ((root-width (x-display-pixel-width))
(root-height (x-display-pixel-height))
;; Get workareas prior to struts.
(workareas (mapcar
(lambda (frame)
(if-let (rect (frame-parameter frame 'exwm-geometry))
;; Use the 'exwm-geometry' frame parameter if it
;; exists. Make sure to clone it, will be modified
;; below!
(clone rect)
;; Fall back to use the screen size.
(make-instance 'xcb:RECTANGLE
:x 0
:y 0
:width root-width
:height root-height)))
exwm-workspace--list)))
;; Exclude areas occupied by struts.
(dolist (struts exwm-workspace--struts)
(let* ((edge (aref struts 0))
(size (aref struts 1))
(position (aref struts 2))
(beg (and position (aref position 0)))
(end (and position (aref position 1)))
delta)
(dolist (w workareas)
(with-slots (x y width height) w
(pcase edge
;; Left and top are always processed first.
('left
(setq delta (- size x))
(when (and (< 0 delta)
(< delta width)
(or (not position)
(< (max beg y)
(min end (+ y height)))))
(cl-decf width delta)
(setf x size)))
('right
(setq delta (- size (- root-width x width)))
(when (and (< 0 delta)
(< delta width)
(or (not position)
(< (max beg y)
(min end (+ y height)))))
(cl-decf width delta)))
('top
(setq delta (- size y))
(when (and (< 0 delta)
(< delta height)
(or (not position)
(< (max beg x)
(min end (+ x width)))))
(cl-decf height delta)
(setf y size)))
('bottom
(setq delta (- size (- root-height y height)))
(when (and (< 0 delta)
(< delta height)
(or (not position)
(< (max beg x)
(min end (+ x width)))))
(cl-decf height delta))))))))
;; Save the result.
(setq exwm-workspace--workareas workareas)
(xcb:flush exwm--connection))
(exwm--log "%s" exwm-workspace--workareas)
(run-hooks 'exwm-workspace--update-workareas-hook))
(defun exwm-workspace--update-offsets ()
"Update `exwm-workspace--frame-y-offset'/`exwm-workspace--window-y-offset'."
(exwm--log)
(if (not (and exwm-workspace--list
(or menu-bar-mode tool-bar-mode)))
(setq exwm-workspace--frame-y-offset 0
exwm-workspace--window-y-offset 0)
(redisplay t)
(let* ((frame (elt exwm-workspace--list 0))
(edges (window-inside-absolute-pixel-edges (frame-first-window
frame))))
(with-slots (y)
(xcb:+request-unchecked+reply exwm--connection
(make-instance 'xcb:GetGeometry
:drawable (frame-parameter frame
'exwm-container)))
(with-slots ((y* y))
(xcb:+request-unchecked+reply exwm--connection
(make-instance 'xcb:GetGeometry
:drawable (frame-parameter frame
'exwm-outer-id)))
(with-slots ((y** y))
(xcb:+request-unchecked+reply exwm--connection
(make-instance 'xcb:GetGeometry
:drawable (frame-parameter frame 'exwm-id)))
(setq exwm-workspace--frame-y-offset (- y** y*)
exwm-workspace--window-y-offset (- (elt edges 1) y))))))))
(defun exwm-workspace--set-active (frame active)
"Make frame FRAME active on its monitor.
ACTIVE indicates whether to set the frame active or inactive."
(exwm--log "active=%s; frame=%s" active frame)
(set-frame-parameter frame 'exwm-active active)
(if active
(exwm-workspace--set-fullscreen frame)
(exwm--set-geometry (frame-parameter frame 'exwm-container) nil nil 1 1))
(exwm-layout--refresh frame)
(xcb:flush exwm--connection))
(defun exwm-workspace--active-p (frame)
"Return non-nil if FRAME is active."
(frame-parameter frame 'exwm-active))
(defun exwm-workspace--set-fullscreen (frame)
"Make frame FRAME fullscreen according to `exwm-workspace--workareas'."
(exwm--log "frame=%s" frame)
(let ((id (frame-parameter frame 'exwm-outer-id))
(container (frame-parameter frame 'exwm-container)))
(with-slots (x y width height)
(exwm-workspace--workarea frame)
(exwm--log "x=%s; y=%s; w=%s; h=%s" x y width height)
(when (and (eq frame exwm-workspace--current)
(exwm-workspace--minibuffer-own-frame-p))
(exwm-workspace--resize-minibuffer-frame))
(if (exwm-workspace--active-p frame)
(exwm--set-geometry container x y width height)
(exwm--set-geometry container x y 1 1))
(exwm--set-geometry id nil nil width height)
(xcb:flush exwm--connection)))
;; This is only used for workspace initialization.
(when exwm-workspace--fullscreen-frame-count
(cl-incf exwm-workspace--fullscreen-frame-count)))
(defun exwm-workspace--resize-minibuffer-frame ()
"Resize minibuffer (and its container) to fit the size of workspace."
(cl-assert (exwm-workspace--minibuffer-own-frame-p))
(let ((workarea (exwm-workspace--workarea exwm-workspace-current-index))
(container (frame-parameter exwm-workspace--minibuffer
'exwm-container))
y width)
(setq y (if (eq exwm-workspace-minibuffer-position 'top)
(- (slot-value workarea 'y)
exwm-workspace--attached-minibuffer-height)
;; Reset the frame size.
(set-frame-height exwm-workspace--minibuffer 1)
(redisplay) ;FIXME.
(+ (slot-value workarea 'y) (slot-value workarea 'height)
(- (frame-pixel-height exwm-workspace--minibuffer))
exwm-workspace--attached-minibuffer-height))
width (slot-value workarea 'width))
(xcb:+request exwm--connection
(make-instance 'xcb:ConfigureWindow
:window container
:value-mask (logior xcb:ConfigWindow:X
xcb:ConfigWindow:Y
xcb:ConfigWindow:Width
(if exwm-manage--desktop
xcb:ConfigWindow:Sibling
0)
xcb:ConfigWindow:StackMode)
:x (slot-value workarea 'x)
:y y
:width width
:sibling exwm-manage--desktop
:stack-mode (if exwm-manage--desktop
xcb:StackMode:Above
xcb:StackMode:Below)))
(xcb:+request exwm--connection
(make-instance 'xcb:ConfigureWindow
:window (frame-parameter exwm-workspace--minibuffer
'exwm-outer-id)
:value-mask xcb:ConfigWindow:Width
:width width))
(exwm--log "y: %s, width: %s" y width)))
(defun exwm-workspace--switch-map-nth-prefix (&optional prefix-digits)
"Allow selecting a workspace by number.
PREFIX-DIGITS is a list of the digits introduced so far."
(interactive)
(let* ((k (aref (substring (this-command-keys-vector) -1) 0))
(d (- k ?0))
;; Convert prefix-digits to number. For example, '(2 1) to 120.
(o 1)
(pn (apply #'+ (mapcar (lambda (x)
(setq o (* 10 o))
(* o x))
prefix-digits)))
(n (+ pn d))
prefix-length index-max index-length)
(if (or (= n 0)
(> n
(setq index-max (1- (exwm-workspace--count))))
(>= (setq prefix-length (length prefix-digits))
(setq index-length (floor (log index-max 10))))
;; Check if it's still possible to do a match.
(> (* n (expt 10 (- index-length prefix-length)))
index-max))
(exwm-workspace--switch-map-select-nth n)
;; Go ahead if there are enough digits to select any workspace.
(set-transient-map
(let ((map (make-sparse-keymap))
(cmd (let ((digits (cons d prefix-digits)))
(lambda ()
(interactive)
(exwm-workspace--switch-map-nth-prefix digits)))))
(dotimes (i 10)
(define-key map (int-to-string i) cmd))
;; Accept
(define-key map [return]
(lambda ()
(interactive)
(exwm-workspace--switch-map-select-nth n)))
map)))))
(defun exwm-workspace--switch-map-select-nth (n)
"Select Nth workspace."
(interactive)
(goto-history-element (1+ n))
(exit-minibuffer))
;;;###autoload
(defun exwm-workspace-switch (frame-or-index &optional force)
"Switch to workspace FRAME-OR-INDEX (0-based).
Query for the index if not specified when called interactively. Passing a
workspace frame as the first option or making use of the rest options are
for internal use only.
When FORCE is true, allow switching to current workspace."
(interactive
(list
(cond
((null current-prefix-arg)
(unless (and (derived-mode-p 'exwm-mode)
;; The prompt is invisible in fullscreen mode.
(exwm-layout--fullscreen-p))
(let ((exwm-workspace--prompt-add-allowed t)
(exwm-workspace--prompt-delete-allowed t))
(exwm-workspace--prompt-for-workspace "Switch to [+/-]: "))))
((and (integerp current-prefix-arg)
(<= 0 current-prefix-arg (exwm-workspace--count)))
current-prefix-arg)
(t 0))))
(exwm--log)
(let* ((frame (exwm-workspace--workspace-from-frame-or-index frame-or-index))
(old-frame exwm-workspace--current)
(index (exwm-workspace--position frame))
(window (frame-parameter frame 'exwm-selected-window)))
(when (or force (not (eq frame exwm-workspace--current)))
(unless (window-live-p window)
(setq window (frame-selected-window frame)))
(when (and (not (eq frame old-frame))
(frame-live-p old-frame))
(with-selected-frame old-frame
(funcall exwm-workspace--original-handle-focus-out
(list 'focus-out frame))))
;; Raise this frame.
(xcb:+request exwm--connection
(make-instance 'xcb:ConfigureWindow
:window (frame-parameter frame 'exwm-container)
:value-mask (logior xcb:ConfigWindow:Sibling
xcb:ConfigWindow:StackMode)
:sibling exwm--guide-window
:stack-mode xcb:StackMode:Below))
(setq exwm-workspace--current frame
exwm-workspace-current-index index)
(unless (exwm-workspace--workspace-p (selected-frame))
;; Save the floating frame window selected on the previous workspace.
(set-frame-parameter (buffer-local-value 'exwm--frame (window-buffer))
'exwm-selected-window (selected-window)))
;; Show/Hide X windows.
(let ((monitor-old (frame-parameter old-frame 'exwm-randr-monitor))
(monitor-new (frame-parameter frame 'exwm-randr-monitor))
(active-old (exwm-workspace--active-p old-frame))
(active-new (exwm-workspace--active-p frame))
workspaces-to-hide)
(cond
((not active-old)
(exwm-workspace--set-active frame t))
((equal monitor-old monitor-new)
(exwm-workspace--set-active frame t)
(unless (eq frame old-frame)
(exwm-workspace--set-active old-frame nil)
(setq workspaces-to-hide (list old-frame))))
(active-new)
(t
(dolist (w exwm-workspace--list)
(when (and (exwm-workspace--active-p w)
(equal monitor-new
(frame-parameter w 'exwm-randr-monitor)))
(exwm-workspace--set-active w nil)
(setq workspaces-to-hide (append workspaces-to-hide (list w)))))
(exwm-workspace--set-active frame t)))
(dolist (i exwm--id-buffer-alist)
(with-current-buffer (cdr i)
(if (memq exwm--frame workspaces-to-hide)
(exwm-layout--hide exwm--id)
(when (eq frame exwm--frame)
(let ((window (get-buffer-window nil t)))
(when window
(exwm-layout--show exwm--id window))))))))
(select-window window)
(x-focus-frame (window-frame window)) ;The real input focus.
(set-frame-parameter frame 'exwm-selected-window nil)
(if (exwm-workspace--minibuffer-own-frame-p)
;; Resize the minibuffer frame.
(exwm-workspace--resize-minibuffer-frame)
;; Set a default minibuffer frame.
(setq default-minibuffer-frame frame))
;; Hide windows in other workspaces by preprending a space
(unless exwm-workspace-show-all-buffers
(dolist (i exwm--id-buffer-alist)
(with-current-buffer (cdr i)
(let ((name (replace-regexp-in-string "^\\s-*" ""
(buffer-name))))
(exwm-workspace-rename-buffer (if (eq frame exwm--frame)
name
(concat " " name)))))))
;; Update demands attention flag
(set-frame-parameter frame 'exwm-urgency nil)
;; Update switch workspace history
(setq exwm-workspace--switch-history-outdated t)
;; Set _NET_CURRENT_DESKTOP
(xcb:+request exwm--connection
(make-instance 'xcb:ewmh:set-_NET_CURRENT_DESKTOP
:window exwm--root :data index))
(xcb:flush exwm--connection))
(when exwm-workspace-warp-cursor
(with-slots (win-x win-y)
(xcb:+request-unchecked+reply exwm--connection
(make-instance 'xcb:QueryPointer
:window (frame-parameter frame
'exwm-outer-id)))
(when (or (< win-x 0)
(< win-y 0)
(> win-x (frame-pixel-width frame))
(> win-y (frame-pixel-height frame)))
(xcb:+request exwm--connection
(make-instance 'xcb:WarpPointer
:src-window xcb:Window:None
:dst-window (frame-parameter frame
'exwm-outer-id)
:src-x 0
:src-y 0
:src-width 0
:src-height 0
:dst-x (/ (frame-pixel-width frame) 2)
:dst-y (/ (frame-pixel-height frame) 2)))
(xcb:flush exwm--connection))))
(funcall exwm-workspace--original-handle-focus-in (list 'focus-in frame))
(run-hooks 'exwm-workspace-switch-hook)))
;;;###autoload
(defun exwm-workspace-switch-create (frame-or-index)
"Switch to workspace FRAME-OR-INDEX creating it first non-existent.
Passing a workspace frame as the first option is for internal use only."
(interactive
(list
(cond
((integerp current-prefix-arg)
current-prefix-arg)
(t 0))))
(unless frame-or-index
(setq frame-or-index 0))
(exwm--log "%s" frame-or-index)
(if (or (framep frame-or-index)
(< frame-or-index (exwm-workspace--count)))
(exwm-workspace-switch frame-or-index)
(let ((exwm-workspace--create-silently t))
(dotimes (_ (min exwm-workspace-switch-create-limit
(1+ (- frame-or-index
(exwm-workspace--count)))))
(make-frame))
(run-hooks 'exwm-workspace-list-change-hook))
(exwm-workspace-switch frame-or-index)))
;;;###autoload
(defun exwm-workspace-swap (workspace1 workspace2)
"Interchange position of WORKSPACE1 with that of WORKSPACE2."
(interactive
(unless (and (derived-mode-p 'exwm-mode)
;; The prompt is invisible in fullscreen mode.
(exwm-layout--fullscreen-p))
(let (w1 w2)
(let ((exwm-workspace--prompt-add-allowed t)
(exwm-workspace--prompt-delete-allowed t))
(setq w1 (exwm-workspace--prompt-for-workspace
"Pick a workspace [+/-]: ")))
(setq w2 (exwm-workspace--prompt-for-workspace
(format "Swap workspace %d with: "
(exwm-workspace--position w1))))
(list w1 w2))))
(exwm--log)
(let ((pos1 (exwm-workspace--position workspace1))
(pos2 (exwm-workspace--position workspace2)))
(if (or (not pos1) (not pos2) (= pos1 pos2))
(user-error "[EXWM] Cannot swap %s and %s" workspace1 workspace2)
(setf (elt exwm-workspace--list pos1) workspace2)
(setf (elt exwm-workspace--list pos2) workspace1)
;; Update the _NET_WM_DESKTOP property of each X window affected.
(dolist (pair exwm--id-buffer-alist)
(when (memq (buffer-local-value 'exwm--frame (cdr pair))
(list workspace1 workspace2))
(exwm-workspace--set-desktop (car pair))))
(xcb:flush exwm--connection)
(when (memq exwm-workspace--current (list workspace1 workspace2))
;; With the current workspace involved, lots of stuffs need refresh.
(set-frame-parameter exwm-workspace--current 'exwm-selected-window
(selected-window))
(exwm-workspace-switch exwm-workspace--current t))
(run-hooks 'exwm-workspace-list-change-hook))))
;;;###autoload
(defun exwm-workspace-move (workspace nth)
"Move WORKSPACE to the NTH position.
When called interactively, prompt for a workspace and move current one just
before it."
(interactive
(cond
((null current-prefix-arg)
(unless (and (derived-mode-p 'exwm-mode)
;; The prompt is invisible in fullscreen mode.
(exwm-layout--fullscreen-p))
(list exwm-workspace--current
(exwm-workspace--position
(exwm-workspace--prompt-for-workspace "Move workspace to: ")))))
((and (integerp current-prefix-arg)
(<= 0 current-prefix-arg (exwm-workspace--count)))
(list exwm-workspace--current current-prefix-arg))
(t (list exwm-workspace--current 0))))
(exwm--log)
(let ((pos (exwm-workspace--position workspace))
flag start end index)
(if (= nth pos)
(user-error "[EXWM] Cannot move to same position")
;; Set if the current workspace is involved.
(setq flag (or (eq workspace exwm-workspace--current)
(eq (elt exwm-workspace--list nth)
exwm-workspace--current)))
;; Do the move.
(with-no-warnings ;For Emacs 24.
(pop (nthcdr pos exwm-workspace--list)))
(push workspace (nthcdr nth exwm-workspace--list))
;; Update the _NET_WM_DESKTOP property of each X window affected.
(setq start (min pos nth)
end (max pos nth))
(dolist (pair exwm--id-buffer-alist)
(setq index (exwm-workspace--position
(buffer-local-value 'exwm--frame (cdr pair))))
(unless (or (< index start) (> index end))
(exwm-workspace--set-desktop (car pair))))
(when flag
;; With the current workspace involved, lots of stuffs need refresh.
(set-frame-parameter exwm-workspace--current 'exwm-selected-window
(selected-window))
(exwm-workspace-switch exwm-workspace--current t))
(run-hooks 'exwm-workspace-list-change-hook))))
;;;###autoload
(defun exwm-workspace-add (&optional index)
"Add a workspace as the INDEX-th workspace, or the last one if INDEX is nil.
INDEX must not exceed the current number of workspaces."
(interactive)
(exwm--log "%s" index)
(if (and index
;; No need to move if it's the last one.
(< index (exwm-workspace--count)))
(exwm-workspace-move (make-frame) index)
(make-frame)))
;;;###autoload
(defun exwm-workspace-delete (&optional frame-or-index)
"Delete the workspace FRAME-OR-INDEX."
(interactive)
(exwm--log "%s" frame-or-index)
(when (< 1 (exwm-workspace--count))
(let ((frame (if frame-or-index
(exwm-workspace--workspace-from-frame-or-index
frame-or-index)
exwm-workspace--current)))
(delete-frame frame))))
(defun exwm-workspace--set-desktop (id)
"Set _NET_WM_DESKTOP for X window ID."
(exwm--log "#x%x" id)
(with-current-buffer (exwm--id->buffer id)
(let ((desktop (exwm-workspace--position exwm--frame)))
(setq exwm--desktop desktop)
(xcb:+request exwm--connection
(make-instance 'xcb:ewmh:set-_NET_WM_DESKTOP
:window id
:data desktop)))))
;;;###autoload
(cl-defun exwm-workspace-move-window (frame-or-index &optional id)
"Move window ID to workspace FRAME-OR-INDEX."
(interactive (list
(cond
((null current-prefix-arg)
(let ((exwm-workspace--prompt-add-allowed t)
(exwm-workspace--prompt-delete-allowed t))
(exwm-workspace--prompt-for-workspace "Move to [+/-]: ")))
((and (integerp current-prefix-arg)
(<= 0 current-prefix-arg (exwm-workspace--count)))
current-prefix-arg)
(t 0))))
(let ((frame (exwm-workspace--workspace-from-frame-or-index frame-or-index))
old-frame container)
(unless id (setq id (exwm--buffer->id (window-buffer))))
(unless id
(cl-return-from exwm-workspace-move-window))
(exwm--log "Moving #x%x to %s" id frame-or-index)
(with-current-buffer (exwm--id->buffer id)
(unless (eq exwm--frame frame)
(unless exwm-workspace-show-all-buffers
(let ((name (replace-regexp-in-string "^\\s-*" "" (buffer-name))))
(exwm-workspace-rename-buffer
(if (eq frame exwm-workspace--current)
name
(concat " " name)))))
(setq old-frame exwm--frame
exwm--frame frame)
(if (not exwm--floating-frame)
;; Tiling.
(if (get-buffer-window nil frame)
(when (eq frame exwm-workspace--current)
(exwm-layout--refresh frame))
(set-window-buffer (get-buffer-window nil t)
(other-buffer nil t))
(unless (eq frame exwm-workspace--current)
;; Clear the 'exwm-selected-window' frame parameter.
(set-frame-parameter frame 'exwm-selected-window nil))
(set-window-buffer (frame-selected-window frame)
(exwm--id->buffer id))
(if (eq frame exwm-workspace--current)
(select-window (frame-selected-window frame))
(unless (exwm-workspace--active-p frame)
(exwm-layout--hide id))))
;; Floating.
(setq container (frame-parameter exwm--floating-frame
'exwm-container))
(unless (equal (frame-parameter old-frame 'exwm-randr-monitor)
(frame-parameter frame 'exwm-randr-monitor))
(with-slots (x y)
(xcb:+request-unchecked+reply exwm--connection
(make-instance 'xcb:GetGeometry
:drawable container))
(with-slots ((x1 x)
(y1 y))
(exwm-workspace--get-geometry old-frame)
(with-slots ((x2 x)
(y2 y))
(exwm-workspace--get-geometry frame)
(setq x (+ x (- x2 x1))
y (+ y (- y2 y1)))))
(exwm--set-geometry id x y nil nil)
(exwm--set-geometry container x y nil nil)))
(if (exwm-workspace--minibuffer-own-frame-p)
(if (eq frame exwm-workspace--current)
(select-window (frame-root-window exwm--floating-frame))
(select-window (frame-selected-window exwm-workspace--current))
(unless (exwm-workspace--active-p frame)
(exwm-layout--hide id)))
;; The frame needs to be recreated since it won't use the
;; minibuffer on the new workspace.
;; The code is mostly copied from `exwm-floating--set-floating'.
(let* ((old-frame exwm--floating-frame)
(new-frame
(with-current-buffer
(or (get-buffer "*scratch*")
(progn
(set-buffer-major-mode
(get-buffer-create "*scratch*"))
(get-buffer "*scratch*")))
(make-frame
`((minibuffer . ,(minibuffer-window frame))
(left . ,(* window-min-width -100))
(top . ,(* window-min-height -100))
(width . ,window-min-width)
(height . ,window-min-height)
(unsplittable . t)))))
(outer-id (string-to-number
(frame-parameter new-frame
'outer-window-id)))
(window-id (string-to-number
(frame-parameter new-frame 'window-id)))
(window (frame-root-window new-frame)))
(set-frame-parameter new-frame 'exwm-outer-id outer-id)
(set-frame-parameter new-frame 'exwm-id window-id)
(set-frame-parameter new-frame 'exwm-container container)
(make-frame-invisible new-frame)
(set-frame-size new-frame
(frame-pixel-width old-frame)
(frame-pixel-height old-frame)
t)
(xcb:+request exwm--connection
(make-instance 'xcb:ReparentWindow
:window outer-id
:parent container
:x 0 :y 0))
(xcb:flush exwm--connection)
(with-current-buffer (exwm--id->buffer id)
(setq window-size-fixed nil
exwm--floating-frame new-frame)
(set-window-dedicated-p (frame-root-window old-frame) nil)
(remove-hook 'window-configuration-change-hook
#'exwm-layout--refresh)
(set-window-buffer window (current-buffer))
(add-hook 'window-configuration-change-hook
#'exwm-layout--refresh)
(set-window-dedicated-p window t))
;; Select a tiling window and delete the old frame.
(select-window (frame-selected-window exwm-workspace--current))
(delete-frame old-frame)
;; The rest is the same.
(make-frame-visible new-frame)
(exwm--set-geometry outer-id 0 0 nil nil)
(xcb:flush exwm--connection)
(redisplay)
(if (eq frame exwm-workspace--current)
(with-current-buffer (exwm--id->buffer id)
(select-window (frame-root-window exwm--floating-frame)))
(unless (exwm-workspace--active-p frame)
(exwm-layout--hide id)))))
;; Update the 'exwm-selected-window' frame parameter.
(when (not (eq frame exwm-workspace--current))
(with-current-buffer (exwm--id->buffer id)
(set-frame-parameter frame 'exwm-selected-window
(frame-root-window
exwm--floating-frame)))))
;; Set _NET_WM_DESKTOP.
(exwm-workspace--set-desktop id)
(xcb:flush exwm--connection)))
(setq exwm-workspace--switch-history-outdated t)))
;;;###autoload
(defun exwm-workspace-switch-to-buffer (buffer-or-name)
"Make selected window display BUFFER-OR-NAME."
(interactive
(let ((inhibit-quit t))
;; Show all buffers
(unless exwm-workspace-show-all-buffers
(dolist (pair exwm--id-buffer-alist)
(with-current-buffer (cdr pair)
(when (= ?\s (aref (buffer-name) 0))
(let ((buffer-list-update-hook
(remq #'exwm-input--on-buffer-list-update
buffer-list-update-hook)))
(rename-buffer (substring (buffer-name) 1)))))))
(prog1
(with-local-quit
(list (get-buffer (read-buffer-to-switch "Switch to buffer: "))))
;; Hide buffers on other workspaces
(unless exwm-workspace-show-all-buffers