mirror of
https://github.com/emacs-exwm/exwm.git
synced 2024-11-23 21:17:59 +01:00
07e59e0429
* RandR module is now made optional; users can enable it with `exwm-randr-enable`. * Correct the calculation of sizes/coordinates at various places. * Input focus is now tracked with (Emacs) window instead of buffer since the latter can be ambiguous in multi-screen settings.
142 lines
6.2 KiB
EmacsLisp
142 lines
6.2 KiB
EmacsLisp
;;; exwm-randr.el --- RandR 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 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, first load/enable it and properly configure the variable
|
||
;; `exwm-randr-workspace-output-plist':
|
||
;; (require 'exwm-randr)
|
||
;; (setq exwm-randr-workspace-output-plist '(0 "VGA1"))
|
||
;; (exwm-randr-enable)
|
||
;; Then configure RandR with 'xrandr':
|
||
;; $ xrandr --output VGA1 --left-of LVDS1 --auto
|
||
;; With above lines, workspace 0 should be assigned to the output named "VGA1",
|
||
;; staying at the left of other workspaces on the output "LVDS1".
|
||
|
||
;; Todo:
|
||
;; + Update EWMH hints.
|
||
|
||
;; References:
|
||
;; + RandR (http://www.x.org/archive/X11R7.7/doc/randrproto/randrproto.txt)
|
||
|
||
;;; Code:
|
||
|
||
(require 'xcb-randr)
|
||
|
||
(defvar exwm-randr-workspace-output-plist nil)
|
||
|
||
(defun exwm-randr--refresh ()
|
||
"Refresh workspaces according to the updated RandR info."
|
||
(let (output-plist default-geometry)
|
||
;; Query all outputs
|
||
(with-slots (config-timestamp outputs)
|
||
(xcb:+request-unchecked+reply exwm--connection
|
||
(make-instance 'xcb:randr:GetScreenResources
|
||
: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))
|
||
(setq 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 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 output-plist (plist-put output-plist name
|
||
(vector x y width height)))
|
||
(unless default-geometry ;assume the first output as primary
|
||
(setq default-geometry (vector x y width height))))))))
|
||
(cl-assert (<= 2 (length output-plist)))
|
||
(dotimes (i exwm-workspace-number)
|
||
(let* ((output (plist-get exwm-randr-workspace-output-plist i))
|
||
(geometry (lax-plist-get output-plist output))
|
||
(frame (elt exwm-workspace--list i)))
|
||
(unless geometry
|
||
(setq geometry default-geometry
|
||
output nil))
|
||
(set-frame-parameter frame 'exwm-randr-output output)
|
||
(set-frame-parameter frame 'exwm-x (elt geometry 0))
|
||
(set-frame-parameter frame 'exwm-y (elt geometry 1))
|
||
(xcb:+request exwm--connection
|
||
(make-instance 'xcb:ConfigureWindow
|
||
:window (frame-parameter frame 'exwm-outer-id)
|
||
:value-mask (logior xcb:ConfigWindow:X
|
||
xcb:ConfigWindow:Y
|
||
xcb:ConfigWindow:Width
|
||
xcb:ConfigWindow:Height)
|
||
:x (elt geometry 0) :y (elt geometry 1)
|
||
:width (elt geometry 2) :height (elt geometry 3)))))
|
||
(xcb:flush exwm--connection)))
|
||
|
||
(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 2))
|
||
(if (or (/= major-version 1) (< minor-version 2))
|
||
(error "[EXWM] The server only support RandR version up to %d.%d"
|
||
major-version minor-version)
|
||
(exwm-randr--refresh)
|
||
(xcb:+event exwm--connection 'xcb:randr:ScreenChangeNotify
|
||
(lambda (data synthetic)
|
||
(exwm--log "(RandR) ScreenChangeNotify")
|
||
(exwm-randr--refresh)))
|
||
;; (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 (logior
|
||
;; xcb:randr:NotifyMask:ScreenChange
|
||
;; xcb:randr:NotifyMask:OutputChange
|
||
;; xcb:randr:NotifyMask:OutputProperty
|
||
;; xcb:randr:NotifyMask:CrtcChange)
|
||
))
|
||
(xcb:flush exwm--connection)))))
|
||
|
||
(defun exwm-randr-enable ()
|
||
"Enable RandR support for EXWM."
|
||
(add-hook 'exwm-init-hook 'exwm-randr--init))
|
||
|
||
|
||
|
||
(provide 'exwm-randr)
|
||
|
||
;;; exwm-randr.el ends here
|