mirror of
https://github.com/emacs-exwm/exwm.git
synced 2024-11-30 16:07:59 +01:00
d3be64e743
* exwm-randr.el (exwm-randr--on-ScreenChangeNotify) (exwm-randr--init): Factor ScreenChangeNotify event callback into a function.
231 lines
10 KiB
EmacsLisp
231 lines
10 KiB
EmacsLisp
;;; exwm-randr.el --- RandR Module for EXWM -*- lexical-binding: t -*-
|
||
|
||
;; Copyright (C) 2015-2018 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 RandR support for EXWM. Currently it requires external
|
||
;; tools such as xrandr(1) to properly configure RandR first. This
|
||
;; dependency may be removed in the future, but more work is needed before
|
||
;; that.
|
||
|
||
;; To use this module, load, enable it and configure
|
||
;; `exwm-randr-workspace-output-plist' and `exwm-randr-screen-change-hook'
|
||
;; as follows:
|
||
;;
|
||
;; (require 'exwm-randr)
|
||
;; (setq exwm-randr-workspace-output-plist '(0 "VGA1"))
|
||
;; (add-hook 'exwm-randr-screen-change-hook
|
||
;; (lambda ()
|
||
;; (start-process-shell-command
|
||
;; "xrandr" nil "xrandr --output VGA1 --left-of LVDS1 --auto")))
|
||
;; (exwm-randr-enable)
|
||
;;
|
||
;; With above lines, workspace 0 should be assigned to the output named "VGA1",
|
||
;; staying at the left of other workspaces on the output "LVDS1". Please refer
|
||
;; to xrandr(1) for the configuration of RandR.
|
||
|
||
;; References:
|
||
;; + RandR (http://www.x.org/archive/X11R7.7/doc/randrproto/randrproto.txt)
|
||
|
||
;;; Code:
|
||
|
||
(require 'xcb-randr)
|
||
(require 'exwm-core)
|
||
|
||
(defgroup exwm-randr nil
|
||
"RandR."
|
||
:version "25.3"
|
||
:group 'exwm)
|
||
|
||
(defcustom exwm-randr-refresh-hook nil
|
||
"Normal hook run when the RandR module just refreshed."
|
||
:type 'hook)
|
||
|
||
(defcustom exwm-randr-screen-change-hook nil
|
||
"Normal hook run when screen changes."
|
||
:type 'hook)
|
||
|
||
(defcustom exwm-randr-workspace-output-plist nil
|
||
"Plist mapping workspace to output.
|
||
|
||
If an output is not available, the workspaces mapped to it are displayed on
|
||
the primary output until it becomes available. Unspecified workspaces are
|
||
all mapped to the primary output. For example, with the following value
|
||
workspace other than 1 and 3 would always be displayed on the primary output
|
||
where workspace 1 and 3 would be displayed on their corresponding output
|
||
whenever the outputs are available.
|
||
|
||
'(1 \"HDMI-1\" 3 \"DP-1\")
|
||
|
||
The outputs available can be identified by running the 'xrandr' utility with
|
||
the first one in result being the primary output."
|
||
:type '(plist :key-type integer :value-type string))
|
||
|
||
(defvar exwm-workspace--fullscreen-frame-count)
|
||
(defvar exwm-workspace--list)
|
||
(declare-function exwm-workspace--active-p "exwm-workspace.el" (frame))
|
||
(declare-function exwm-workspace--count "exwm-workspace.el")
|
||
(declare-function exwm-workspace--set-active "exwm-workspace.el"
|
||
(frame active))
|
||
(declare-function exwm-workspace--set-desktop-geometry "exwm-workspace.el" ())
|
||
(declare-function exwm-workspace--set-fullscreen "exwm-workspace.el" (frame))
|
||
(declare-function exwm-workspace--show-minibuffer "exwm-workspace.el" ())
|
||
(declare-function exwm-workspace--update-workareas "exwm-workspace.el" ())
|
||
|
||
(defun exwm-randr--refresh ()
|
||
"Refresh workspaces according to the updated RandR info."
|
||
(let (output-name geometry output-plist primary-output default-geometry
|
||
container-output-alist container-frame-alist)
|
||
;; Query all outputs
|
||
(with-slots (config-timestamp outputs)
|
||
(xcb:+request-unchecked+reply exwm--connection
|
||
(make-instance 'xcb:randr:GetScreenResourcesCurrent
|
||
:window exwm--root))
|
||
(dolist (output outputs)
|
||
(with-slots (crtc connection name)
|
||
(xcb:+request-unchecked+reply exwm--connection
|
||
(make-instance 'xcb:randr:GetOutputInfo
|
||
:output output
|
||
:config-timestamp config-timestamp))
|
||
(setf output-name ;UTF-8 encoded
|
||
(decode-coding-string (apply #'unibyte-string name) 'utf-8))
|
||
(if (or (/= connection xcb:randr:Connection:Connected)
|
||
(= 0 crtc)) ;FIXME
|
||
(plist-put output-plist output-name nil)
|
||
(with-slots (x y width height)
|
||
(xcb:+request-unchecked+reply exwm--connection
|
||
(make-instance 'xcb:randr:GetCrtcInfo
|
||
:crtc crtc
|
||
:config-timestamp config-timestamp))
|
||
(setq geometry (make-instance 'xcb:RECTANGLE
|
||
:x x :y y
|
||
:width width :height height)
|
||
output-plist (plist-put output-plist output-name geometry))
|
||
(unless primary-output
|
||
(setq primary-output output-name
|
||
default-geometry geometry)))))))
|
||
(exwm--log "(randr) outputs: %s" output-plist)
|
||
(when output-plist
|
||
(when exwm-workspace--fullscreen-frame-count
|
||
;; Not all workspaces are fullscreen; reset this counter.
|
||
(setq exwm-workspace--fullscreen-frame-count 0))
|
||
(dotimes (i (exwm-workspace--count))
|
||
(let* ((output (plist-get exwm-randr-workspace-output-plist i))
|
||
(geometry (lax-plist-get output-plist output))
|
||
(frame (elt exwm-workspace--list i))
|
||
(container (frame-parameter frame 'exwm-container)))
|
||
(unless geometry
|
||
(setq geometry default-geometry
|
||
output primary-output))
|
||
(setq container-output-alist (nconc `((,container . ,output))
|
||
container-output-alist)
|
||
container-frame-alist (nconc `((,container . ,frame))
|
||
container-frame-alist))
|
||
(set-frame-parameter frame 'exwm-randr-output output)
|
||
(set-frame-parameter frame 'exwm-geometry geometry)))
|
||
;; Update active/inactive workspaces.
|
||
(dolist (w exwm-workspace--list)
|
||
(exwm-workspace--set-active w nil))
|
||
(dolist (xwin
|
||
(reverse
|
||
(slot-value (xcb:+request-unchecked+reply exwm--connection
|
||
(make-instance 'xcb:QueryTree
|
||
:window exwm--root))
|
||
'children)))
|
||
(let ((output (cdr (assq xwin container-output-alist))))
|
||
(when output
|
||
(setq container-output-alist
|
||
(rassq-delete-all output container-output-alist))
|
||
(exwm-workspace--set-active (cdr (assq xwin container-frame-alist))
|
||
t))))
|
||
;; Update workareas.
|
||
(exwm-workspace--update-workareas)
|
||
;; Resize workspace.
|
||
(dolist (f exwm-workspace--list)
|
||
(exwm-workspace--set-fullscreen f))
|
||
;; Raise the minibuffer if it's active.
|
||
(when (and (active-minibuffer-window)
|
||
(exwm-workspace--minibuffer-own-frame-p))
|
||
(exwm-workspace--show-minibuffer))
|
||
;; Set _NET_DESKTOP_GEOMETRY.
|
||
(exwm-workspace--set-desktop-geometry)
|
||
(xcb:flush exwm--connection)
|
||
(run-hooks 'exwm-randr-refresh-hook))))
|
||
|
||
(defun exwm-randr--on-ScreenChangeNotify (_data _synthetic)
|
||
(exwm--log "(RandR) ScreenChangeNotify")
|
||
(run-hooks 'exwm-randr-screen-change-hook)
|
||
(exwm-randr--refresh))
|
||
|
||
(defun exwm-randr--init ()
|
||
"Initialize RandR extension and EXWM RandR module."
|
||
(if (= 0 (slot-value (xcb:get-extension-data exwm--connection 'xcb:randr)
|
||
'present))
|
||
(error "[EXWM] RandR extension is not supported by the server")
|
||
(with-slots (major-version minor-version)
|
||
(xcb:+request-unchecked+reply exwm--connection
|
||
(make-instance 'xcb:randr:QueryVersion
|
||
:major-version 1 :minor-version 3))
|
||
(if (or (/= major-version 1) (< minor-version 3))
|
||
(error "[EXWM] The server only support RandR version up to %d.%d"
|
||
major-version minor-version)
|
||
;; External monitor(s) may already be connected.
|
||
(run-hooks 'exwm-randr-screen-change-hook)
|
||
(exwm-randr--refresh)
|
||
(xcb:+event exwm--connection 'xcb:randr:ScreenChangeNotify
|
||
#'exwm-randr--on-ScreenChangeNotify)
|
||
;; (xcb:+event exwm--connection 'xcb:randr:Notify
|
||
;; (lambda (_data _synthetic)
|
||
;; (exwm--log "(RandR) Notify")
|
||
;; (exwm-randr--refresh)))
|
||
(xcb:+request exwm--connection
|
||
(make-instance 'xcb:randr:SelectInput
|
||
:window exwm--root
|
||
:enable xcb:randr:NotifyMask:ScreenChange
|
||
;; :enable (eval-when-compile
|
||
;; (logior
|
||
;; xcb:randr:NotifyMask:ScreenChange
|
||
;; xcb:randr:NotifyMask:OutputChange
|
||
;; xcb:randr:NotifyMask:OutputProperty
|
||
;; xcb:randr:NotifyMask:CrtcChange))
|
||
))
|
||
(xcb:flush exwm--connection)
|
||
(add-hook 'exwm-workspace-list-change-hook #'exwm-randr--refresh))))
|
||
;; Prevent frame parameters introduced by this module from being
|
||
;; saved/restored.
|
||
(dolist (i '(exwm-randr-output))
|
||
(unless (assq i frameset-filter-alist)
|
||
(push (cons i :never) frameset-filter-alist))))
|
||
|
||
(defun exwm-randr--exit ()
|
||
"Exit the RandR module."
|
||
(remove-hook 'exwm-workspace-list-change-hook #'exwm-randr--refresh))
|
||
|
||
(defun exwm-randr-enable ()
|
||
"Enable RandR support for EXWM."
|
||
(add-hook 'exwm-init-hook #'exwm-randr--init)
|
||
(add-hook 'exwm-exit-hook #'exwm-randr--exit))
|
||
|
||
|
||
|
||
(provide 'exwm-randr)
|
||
|
||
;;; exwm-randr.el ends here
|