blob: d14e0974c7ad00bd37f8bc3dd47ff94111f0fd4d (
plain) (
blame)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
|
;;; exwm-randr.el --- RandR Module for EXWM -*- lexical-binding: t -*-
;; Copyright (C) 2015 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, 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".
;; References:
;; + RandR (http://www.x.org/archive/X11R7.7/doc/randrproto/randrproto.txt)
;;; Code:
(require 'xcb-randr)
(require 'exwm-core)
(eval-when-compile (require 'exwm-workspace))
(defvar exwm-randr-workspace-output-plist nil)
(defun exwm-randr--refresh ()
"Refresh workspaces according to the updated RandR info."
(let (geometry output-plist default-geometry workareas viewports)
;; 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 geometry (make-instance 'xcb:RECTANGLE
:x x :y y
:width width :height height)
output-plist (plist-put output-plist name geometry))
(unless default-geometry ;assume the first output as primary
(setq default-geometry geometry)))))))
(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-geometry geometry)
(with-slots (x y width height) geometry
(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 x :y y :width width :height height))
(setq workareas (nconc workareas (list x y width height))
viewports (nconc viewports (list x y))))))
;; Update _NET_WORKAREA
(xcb:+request exwm--connection
(make-instance 'xcb:ewmh:set-_NET_WORKAREA
:window exwm--root :data (vconcat workareas)))
;; Update _NET_DESKTOP_VIEWPORT
(xcb:+request exwm--connection
(make-instance 'xcb:ewmh:set-_NET_DESKTOP_VIEWPORT
:window exwm--root
:data (vconcat viewports)))
(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
|
