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https://github.com/ch11ng/exwm.git
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5184f0d7c1
Some subrs (e.g. x-file-dialog) create X windows and block the execution of EXWM, so they won't work normally. This commit partly fixes this issue by invoking them in a subordinate Emacs instance and trying to fetch the result back. * exwm.el (exwm-blocking-subrs): New variable for specify such subrs. * exwm.el (exwm-enable, exwm--server-name, exwm--server-stop) (exwm--server-eval-at): The implementation. * exwm-core.el: * exwm-floating.el: * exwm-layout.el: * exwm-manage.el: * exwm-randr.el: Evaluate constants at compile-time. * README.md: Renamed from README.org to make the 'Commentary:' section used by GNU ELPA instead. * exwm.el: Depends on XELB version 0.3.
154 lines
7 KiB
EmacsLisp
154 lines
7 KiB
EmacsLisp
;;; exwm-randr.el --- RandR Module for EXWM -*- lexical-binding: t -*-
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;; Copyright (C) 2015 Free Software Foundation, Inc.
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;; Author: Chris Feng <chris.w.feng@gmail.com>
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;; This file is part of GNU Emacs.
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;; GNU Emacs is free software: you can redistribute it and/or modify
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;; it under the terms of the GNU General Public License as published by
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;; the Free Software Foundation, either version 3 of the License, or
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;; (at your option) any later version.
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;; GNU Emacs is distributed in the hope that it will be useful,
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;; but WITHOUT ANY WARRANTY; without even the implied warranty of
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;; MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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;; GNU General Public License for more details.
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;; You should have received a copy of the GNU General Public License
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;; along with GNU Emacs. If not, see <http://www.gnu.org/licenses/>.
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;;; Commentary:
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;; This module adds RandR support for EXWM. Currently it requires external
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;; tools such as xrandr(1) to properly configure RandR first. This dependency
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;; may be removed in the future, but more work is needed before that.
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;; To use this module, first load/enable it and properly configure the variable
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;; `exwm-randr-workspace-output-plist':
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;; (require 'exwm-randr)
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;; (setq exwm-randr-workspace-output-plist '(0 "VGA1"))
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;; (exwm-randr-enable)
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;; Then configure RandR with 'xrandr':
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;; $ xrandr --output VGA1 --left-of LVDS1 --auto
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;; With above lines, workspace 0 should be assigned to the output named "VGA1",
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;; staying at the left of other workspaces on the output "LVDS1".
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;; References:
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;; + RandR (http://www.x.org/archive/X11R7.7/doc/randrproto/randrproto.txt)
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;;; Code:
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(require 'xcb-randr)
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(require 'exwm-core)
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(eval-when-compile (require 'exwm-workspace))
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(defvar exwm-randr-workspace-output-plist nil)
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(defun exwm-randr--refresh ()
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"Refresh workspaces according to the updated RandR info."
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(let (output-name geometry output-plist default-geometry workareas viewports)
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;; Query all outputs
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(with-slots (config-timestamp outputs)
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(xcb:+request-unchecked+reply exwm--connection
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(make-instance 'xcb:randr:GetScreenResources
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:window exwm--root))
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(dolist (output outputs)
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(with-slots (crtc connection name)
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(xcb:+request-unchecked+reply exwm--connection
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(make-instance 'xcb:randr:GetOutputInfo
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:output output
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:config-timestamp config-timestamp))
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(setf output-name ;UTF-8 encoded
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(decode-coding-string (apply #'unibyte-string name) 'utf-8))
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(if (or (/= connection xcb:randr:Connection:Connected)
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(= 0 crtc)) ;FIXME
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(plist-put output-plist output-name nil)
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(with-slots (x y width height)
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(xcb:+request-unchecked+reply exwm--connection
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(make-instance 'xcb:randr:GetCrtcInfo
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:crtc crtc
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:config-timestamp config-timestamp))
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(setq geometry (make-instance 'xcb:RECTANGLE
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:x x :y y
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:width width :height height)
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output-plist (plist-put output-plist output-name geometry))
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(unless default-geometry ;assume the first output as primary
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(setq default-geometry geometry)))))))
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(cl-assert (<= 2 (length output-plist)))
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(dotimes (i exwm-workspace-number)
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(let* ((output (plist-get exwm-randr-workspace-output-plist i))
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(geometry (lax-plist-get output-plist output))
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(frame (elt exwm-workspace--list i)))
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(unless geometry
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(setq geometry default-geometry
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output nil))
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(set-frame-parameter frame 'exwm-randr-output output)
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(set-frame-parameter frame 'exwm-geometry geometry)
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(with-slots (x y width height) geometry
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(xcb:+request exwm--connection
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(make-instance 'xcb:ConfigureWindow
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:window (frame-parameter frame 'exwm-outer-id)
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:value-mask (eval-when-compile
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(logior xcb:ConfigWindow:X
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xcb:ConfigWindow:Y
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xcb:ConfigWindow:Width
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xcb:ConfigWindow:Height))
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:x x :y y :width width :height height))
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(setq workareas (nconc workareas (list x y width height))
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viewports (nconc viewports (list x y))))))
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;; Update _NET_WORKAREA
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(xcb:+request exwm--connection
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(make-instance 'xcb:ewmh:set-_NET_WORKAREA
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:window exwm--root :data (vconcat workareas)))
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;; Update _NET_DESKTOP_VIEWPORT
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(xcb:+request exwm--connection
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(make-instance 'xcb:ewmh:set-_NET_DESKTOP_VIEWPORT
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:window exwm--root
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:data (vconcat viewports)))
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(xcb:flush exwm--connection)))
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(defun exwm-randr--init ()
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"Initialize RandR extension and EXWM RandR module."
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(if (= 0 (slot-value (xcb:get-extension-data exwm--connection 'xcb:randr)
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'present))
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(error "[EXWM] RandR extension is not supported by the server")
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(with-slots (major-version minor-version)
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(xcb:+request-unchecked+reply exwm--connection
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(make-instance 'xcb:randr:QueryVersion
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:major-version 1 :minor-version 2))
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(if (or (/= major-version 1) (< minor-version 2))
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(error "[EXWM] The server only support RandR version up to %d.%d"
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major-version minor-version)
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(exwm-randr--refresh)
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(xcb:+event exwm--connection 'xcb:randr:ScreenChangeNotify
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(lambda (_data _synthetic)
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(exwm--log "(RandR) ScreenChangeNotify")
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(exwm-randr--refresh)))
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;; (xcb:+event exwm--connection 'xcb:randr:Notify
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;; (lambda (_data _synthetic)
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;; (exwm--log "(RandR) Notify")
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;; (exwm-randr--refresh)))
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(xcb:+request exwm--connection
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(make-instance 'xcb:randr:SelectInput
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:window exwm--root
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:enable xcb:randr:NotifyMask:ScreenChange
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;; :enable (eval-when-compile
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;; (logior
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;; xcb:randr:NotifyMask:ScreenChange
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;; xcb:randr:NotifyMask:OutputChange
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;; xcb:randr:NotifyMask:OutputProperty
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;; xcb:randr:NotifyMask:CrtcChange))
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))
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(xcb:flush exwm--connection)))))
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(defun exwm-randr-enable ()
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"Enable RandR support for EXWM."
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(add-hook 'exwm-init-hook #'exwm-randr--init))
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(provide 'exwm-randr)
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;;; exwm-randr.el ends here
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