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exwm-workspace.el
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;;; exwm-workspace.el --- Workspace Module for EXWM -*- lexical-binding: t -*-
;; Copyright (C) 2015-2020 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."
:version "25.3"
: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 (workspace 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' allowed to create
each time."
: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--client nil
"The 'client' frame parameter of emacsclient frames.")
(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"
(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."
(memq frame exwm-workspace--list))
(defsubst exwm-workspace--client-p (&optional frame)
"Return non-nil if FRAME is an emacsclient frame."
(or (frame-parameter frame 'client)
(not (display-graphic-p frame))))
(defvar exwm-workspace--switch-map nil
"Keymap used for interactively selecting workspace.")
(defun exwm-workspace--init-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."
(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))))
(exwm-workspace--get-remove-frame-next-workspace frame)
(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))
workareas
edge width position
delta)
;; Calculate workareas with no struts.
(if (frame-parameter (car exwm-workspace--list) 'exwm-geometry)
;; Use the 'exwm-geometry' frame parameter if possible.
(dolist (f exwm-workspace--list)
(with-slots (x y width height) (frame-parameter f 'exwm-geometry)
(setq workareas (append workareas
(list (vector x y width height))))))
;; Fall back to use the screen size.
(let ((workarea (vector 0 0 root-width root-height)))
(setq workareas (make-list (exwm-workspace--count) workarea))))
;; Exclude areas occupied by struts.
(dolist (struts exwm-workspace--struts)
(setq edge (aref struts 0)
width (aref struts 1)
position (aref struts 2))
(dolist (w workareas)
(pcase edge
;; Left and top are always processed first.
(`left
(setq delta (- (aref w 0) width))
(when (and (< delta 0)
(or (not position)
(< (max (aref position 0) (aref w 1))
(min (aref position 1)
(+ (aref w 1) (aref w 3))))))
(cl-incf (aref w 2) delta)
(setf (aref w 0) width)))
(`right
(setq delta (- root-width (aref w 0) (aref w 2) width))
(when (and (< delta 0)
(or (not position)
(< (max (aref position 0) (aref w 1))
(min (aref position 1)
(+ (aref w 1) (aref w 3))))))
(cl-incf (aref w 2) delta)))
(`top
(setq delta (- (aref w 1) width))
(when (and (< delta 0)
(or (not position)
(< (max (aref position 0) (aref w 0))
(min (aref position 1)
(+ (aref w 0) (aref w 2))))))
(cl-incf (aref w 3) delta)
(setf (aref w 1) width)))
(`bottom
(setq delta (- root-height (aref w 1) (aref w 3) width))
(when (and (< delta 0)
(or (not position)
(< (max (aref position 0) (aref w 0))
(min (aref position 1)
(+ (aref w 0) (aref w 2))))))
(cl-incf (aref w 3) 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."
(exwm--log "active=%s; frame=%s" frame active)
(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 ((workarea (elt exwm-workspace--workareas
(exwm-workspace--position frame)))
(id (frame-parameter frame 'exwm-outer-id))
(container (frame-parameter frame 'exwm-container))
x y width height)
(setq x (aref workarea 0)
y (aref workarea 1)
width (aref workarea 2)
height (aref workarea 3))
(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 (elt exwm-workspace--workareas exwm-workspace-current-index))
(container (frame-parameter exwm-workspace--minibuffer
'exwm-container))
y width)
(setq y (if (eq exwm-workspace-minibuffer-position 'top)
(- (aref workarea 1)
exwm-workspace--attached-minibuffer-height)
;; Reset the frame size.
(set-frame-height exwm-workspace--minibuffer 1)
(redisplay) ;FIXME.
(+ (aref workarea 1) (aref workarea 3)
(- (frame-pixel-height exwm-workspace--minibuffer))
exwm-workspace--attached-minibuffer-height))
width (aref workarea 2))
(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 (aref workarea 0)
: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 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."
(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 INDEX or creating it first if it does not exist yet.
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)))
(exwm-workspace--get-remove-frame-next-workspace frame)
(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 the current Emacs window display another buffer."
(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
(dolist (pair exwm--id-buffer-alist)
(with-current-buffer (cdr pair)
(unless (or (eq exwm--frame exwm-workspace--current)
(= ?\s (aref (buffer-name) 0)))