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Diffstat (limited to 'third_party/emacs/exwm/exwm-systemtray.el')
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diff --git a/third_party/emacs/exwm/exwm-systemtray.el b/third_party/emacs/exwm/exwm-systemtray.el deleted file mode 100644 index 20dc5226cf..0000000000 --- a/third_party/emacs/exwm/exwm-systemtray.el +++ /dev/null @@ -1,587 +0,0 @@ -;;; exwm-systemtray.el --- System Tray Module for -*- lexical-binding: t -*- -;;; EXWM - -;; Copyright (C) 2016-2020 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 system tray support for EXWM. - -;; To use this module, load and enable it as follows: -;; (require 'exwm-systemtray) -;; (exwm-systemtray-enable) - -;;; Code: - -(require 'xcb-icccm) -(require 'xcb-xembed) -(require 'xcb-systemtray) - -(require 'exwm-core) -(require 'exwm-workspace) - -(defclass exwm-systemtray--icon () - ((width :initarg :width) - (height :initarg :height) - (visible :initarg :visible)) - :documentation "Attributes of a system tray icon.") - -(defclass xcb:systemtray:-ClientMessage - (xcb:icccm:--ClientMessage xcb:ClientMessage) - ((format :initform 32) - (type :initform xcb:Atom:MANAGER) - (time :initarg :time :type xcb:TIMESTAMP) ;new slot - (selection :initarg :selection :type xcb:ATOM) ;new slot - (owner :initarg :owner :type xcb:WINDOW)) ;new slot - :documentation "A systemtray client message.") - -(defgroup exwm-systemtray nil - "System tray." - :version "25.3" - :group 'exwm) - -(defcustom exwm-systemtray-height nil - "System tray height. - -You shall use the default value if using auto-hide minibuffer." - :type 'integer) - -(defcustom exwm-systemtray-icon-gap 2 - "Gap between icons." - :type 'integer) - -(defvar exwm-systemtray--embedder-window nil "The embedder window.") - -(defcustom exwm-systemtray-background-color nil - "Background color of systemtray. - -This should be a color, or nil for transparent background." - :type '(choice (const :tag "Transparent" nil) - (color)) - :initialize #'custom-initialize-default - :set (lambda (symbol value) - (set-default symbol value) - ;; Change the background color for embedder. - (when (and exwm--connection - exwm-systemtray--embedder-window) - (let ((background-pixel (exwm--color->pixel value))) - (xcb:+request exwm--connection - (make-instance 'xcb:ChangeWindowAttributes - :window exwm-systemtray--embedder-window - :value-mask (logior xcb:CW:BackPixmap - (if background-pixel - xcb:CW:BackPixel 0)) - :background-pixmap - xcb:BackPixmap:ParentRelative - :background-pixel background-pixel)) - ;; Unmap & map to take effect immediately. - (xcb:+request exwm--connection - (make-instance 'xcb:UnmapWindow - :window exwm-systemtray--embedder-window)) - (xcb:+request exwm--connection - (make-instance 'xcb:MapWindow - :window exwm-systemtray--embedder-window)) - (xcb:flush exwm--connection))))) - -;; GTK icons require at least 16 pixels to show normally. -(defconst exwm-systemtray--icon-min-size 16 "Minimum icon size.") - -(defvar exwm-systemtray--connection nil "The X connection.") - -(defvar exwm-systemtray--list nil "The icon list.") - -(defvar exwm-systemtray--selection-owner-window nil - "The selection owner window.") - -(defvar xcb:Atom:_NET_SYSTEM_TRAY_S0) - -(defun exwm-systemtray--embed (icon) - "Embed an icon." - (exwm--log "Try to embed #x%x" icon) - (let ((info (xcb:+request-unchecked+reply exwm-systemtray--connection - (make-instance 'xcb:xembed:get-_XEMBED_INFO - :window icon))) - width* height* visible) - (when info - (exwm--log "Embed #x%x" icon) - (with-slots (width height) - (xcb:+request-unchecked+reply exwm-systemtray--connection - (make-instance 'xcb:GetGeometry :drawable icon)) - (setq height* exwm-systemtray-height - width* (round (* width (/ (float height*) height)))) - (when (< width* exwm-systemtray--icon-min-size) - (setq width* exwm-systemtray--icon-min-size - height* (round (* height (/ (float width*) width))))) - (exwm--log "Resize from %dx%d to %dx%d" - width height width* height*)) - ;; Add this icon to save-set. - (xcb:+request exwm-systemtray--connection - (make-instance 'xcb:ChangeSaveSet - :mode xcb:SetMode:Insert - :window icon)) - ;; Reparent to the embedder. - (xcb:+request exwm-systemtray--connection - (make-instance 'xcb:ReparentWindow - :window icon - :parent exwm-systemtray--embedder-window - :x 0 - ;; Vertically centered. - :y (/ (- exwm-systemtray-height height*) 2))) - ;; Resize the icon. - (xcb:+request exwm-systemtray--connection - (make-instance 'xcb:ConfigureWindow - :window icon - :value-mask (logior xcb:ConfigWindow:Width - xcb:ConfigWindow:Height - xcb:ConfigWindow:BorderWidth) - :width width* - :height height* - :border-width 0)) - ;; Set event mask. - (xcb:+request exwm-systemtray--connection - (make-instance 'xcb:ChangeWindowAttributes - :window icon - :value-mask xcb:CW:EventMask - :event-mask (logior xcb:EventMask:ResizeRedirect - xcb:EventMask:KeyPress - xcb:EventMask:PropertyChange))) - ;; Grab all keys and forward them to Emacs frame. - (unless (exwm-workspace--minibuffer-own-frame-p) - (xcb:+request exwm-systemtray--connection - (make-instance 'xcb:GrabKey - :owner-events 0 - :grab-window icon - :modifiers xcb:ModMask:Any - :key xcb:Grab:Any - :pointer-mode xcb:GrabMode:Async - :keyboard-mode xcb:GrabMode:Async))) - (setq visible (slot-value info 'flags)) - (if visible - (setq visible - (/= 0 (logand (slot-value info 'flags) xcb:xembed:MAPPED))) - ;; Default to visible. - (setq visible t)) - (when visible - (exwm--log "Map the window") - (xcb:+request exwm-systemtray--connection - (make-instance 'xcb:MapWindow :window icon))) - (xcb:+request exwm-systemtray--connection - (make-instance 'xcb:xembed:SendEvent - :destination icon - :event - (xcb:marshal - (make-instance 'xcb:xembed:EMBEDDED-NOTIFY - :window icon - :time xcb:Time:CurrentTime - :embedder - exwm-systemtray--embedder-window - :version 0) - exwm-systemtray--connection))) - (push `(,icon . ,(make-instance 'exwm-systemtray--icon - :width width* - :height height* - :visible visible)) - exwm-systemtray--list) - (exwm-systemtray--refresh)))) - -(defun exwm-systemtray--unembed (icon) - "Unembed an icon." - (exwm--log "Unembed #x%x" icon) - (xcb:+request exwm-systemtray--connection - (make-instance 'xcb:UnmapWindow :window icon)) - (xcb:+request exwm-systemtray--connection - (make-instance 'xcb:ReparentWindow - :window icon - :parent exwm--root - :x 0 :y 0)) - (setq exwm-systemtray--list - (assq-delete-all icon exwm-systemtray--list)) - (exwm-systemtray--refresh)) - -(defun exwm-systemtray--refresh () - "Refresh the system tray." - (exwm--log) - ;; Make sure to redraw the embedder. - (xcb:+request exwm-systemtray--connection - (make-instance 'xcb:UnmapWindow - :window exwm-systemtray--embedder-window)) - (let ((x exwm-systemtray-icon-gap) - map) - (dolist (pair exwm-systemtray--list) - (when (slot-value (cdr pair) 'visible) - (xcb:+request exwm-systemtray--connection - (make-instance 'xcb:ConfigureWindow - :window (car pair) - :value-mask xcb:ConfigWindow:X - :x x)) - (setq x (+ x (slot-value (cdr pair) 'width) - exwm-systemtray-icon-gap)) - (setq map t))) - (let ((workarea (elt exwm-workspace--workareas - exwm-workspace-current-index))) - (xcb:+request exwm-systemtray--connection - (make-instance 'xcb:ConfigureWindow - :window exwm-systemtray--embedder-window - :value-mask (logior xcb:ConfigWindow:X - xcb:ConfigWindow:Width) - :x (- (aref workarea 2) x) - :width x))) - (when map - (xcb:+request exwm-systemtray--connection - (make-instance 'xcb:MapWindow - :window exwm-systemtray--embedder-window)))) - (xcb:flush exwm-systemtray--connection)) - -(defun exwm-systemtray--on-DestroyNotify (data _synthetic) - "Unembed icons on DestroyNotify." - (exwm--log) - (let ((obj (make-instance 'xcb:DestroyNotify))) - (xcb:unmarshal obj data) - (with-slots (window) obj - (when (assoc window exwm-systemtray--list) - (exwm-systemtray--unembed window))))) - -(defun exwm-systemtray--on-ReparentNotify (data _synthetic) - "Unembed icons on ReparentNotify." - (exwm--log) - (let ((obj (make-instance 'xcb:ReparentNotify))) - (xcb:unmarshal obj data) - (with-slots (window parent) obj - (when (and (/= parent exwm-systemtray--embedder-window) - (assoc window exwm-systemtray--list)) - (exwm-systemtray--unembed window))))) - -(defun exwm-systemtray--on-ResizeRequest (data _synthetic) - "Resize the tray icon on ResizeRequest." - (exwm--log) - (let ((obj (make-instance 'xcb:ResizeRequest)) - attr) - (xcb:unmarshal obj data) - (with-slots (window width height) obj - (when (setq attr (cdr (assoc window exwm-systemtray--list))) - (with-slots ((width* width) - (height* height)) - attr - (setq height* exwm-systemtray-height - width* (round (* width (/ (float height*) height)))) - (when (< width* exwm-systemtray--icon-min-size) - (setq width* exwm-systemtray--icon-min-size - height* (round (* height (/ (float width*) width))))) - (xcb:+request exwm-systemtray--connection - (make-instance 'xcb:ConfigureWindow - :window window - :value-mask (logior xcb:ConfigWindow:Y - xcb:ConfigWindow:Width - xcb:ConfigWindow:Height) - ;; Vertically centered. - :y (/ (- exwm-systemtray-height height*) 2) - :width width* - :height height*))) - (exwm-systemtray--refresh))))) - -(defun exwm-systemtray--on-PropertyNotify (data _synthetic) - "Map/Unmap the tray icon on PropertyNotify." - (exwm--log) - (let ((obj (make-instance 'xcb:PropertyNotify)) - attr info visible) - (xcb:unmarshal obj data) - (with-slots (window atom state) obj - (when (and (eq state xcb:Property:NewValue) - (eq atom xcb:Atom:_XEMBED_INFO) - (setq attr (cdr (assoc window exwm-systemtray--list)))) - (setq info (xcb:+request-unchecked+reply exwm-systemtray--connection - (make-instance 'xcb:xembed:get-_XEMBED_INFO - :window window))) - (when info - (setq visible (/= 0 (logand (slot-value info 'flags) - xcb:xembed:MAPPED))) - (exwm--log "#x%x visible? %s" window visible) - (if visible - (xcb:+request exwm-systemtray--connection - (make-instance 'xcb:MapWindow :window window)) - (xcb:+request exwm-systemtray--connection - (make-instance 'xcb:UnmapWindow :window window))) - (setf (slot-value attr 'visible) visible) - (exwm-systemtray--refresh)))))) - -(defun exwm-systemtray--on-ClientMessage (data _synthetic) - "Handle client messages." - (let ((obj (make-instance 'xcb:ClientMessage)) - opcode data32) - (xcb:unmarshal obj data) - (with-slots (window type data) obj - (when (eq type xcb:Atom:_NET_SYSTEM_TRAY_OPCODE) - (setq data32 (slot-value data 'data32) - opcode (elt data32 1)) - (exwm--log "opcode: %s" opcode) - (cond ((= opcode xcb:systemtray:opcode:REQUEST-DOCK) - (unless (assoc (elt data32 2) exwm-systemtray--list) - (exwm-systemtray--embed (elt data32 2)))) - ;; Not implemented (rarely used nowadays). - ((or (= opcode xcb:systemtray:opcode:BEGIN-MESSAGE) - (= opcode xcb:systemtray:opcode:CANCEL-MESSAGE))) - (t - (exwm--log "Unknown opcode message: %s" obj))))))) - -(defun exwm-systemtray--on-KeyPress (data _synthetic) - "Forward all KeyPress events to Emacs frame." - (exwm--log) - ;; This function is only executed when there's no autohide minibuffer, - ;; a workspace frame has the input focus and the pointer is over a - ;; tray icon. - (let ((dest (frame-parameter (selected-frame) 'exwm-outer-id)) - (obj (make-instance 'xcb:KeyPress))) - (xcb:unmarshal obj data) - (setf (slot-value obj 'event) dest) - (xcb:+request exwm-systemtray--connection - (make-instance 'xcb:SendEvent - :propagate 0 - :destination dest - :event-mask xcb:EventMask:NoEvent - :event (xcb:marshal obj exwm-systemtray--connection)))) - (xcb:flush exwm-systemtray--connection)) - -(defun exwm-systemtray--on-workspace-switch () - "Reparent/Refresh the system tray in `exwm-workspace-switch-hook'." - (exwm--log) - (unless (exwm-workspace--minibuffer-own-frame-p) - (exwm-workspace--update-offsets) - (xcb:+request exwm-systemtray--connection - (make-instance 'xcb:ReparentWindow - :window exwm-systemtray--embedder-window - :parent (string-to-number - (frame-parameter exwm-workspace--current - 'window-id)) - :x 0 - :y (- (elt (elt exwm-workspace--workareas - exwm-workspace-current-index) - 3) - exwm-workspace--frame-y-offset - exwm-systemtray-height)))) - (exwm-systemtray--refresh)) - -(defun exwm-systemtray--refresh-all () - "Reposition/Refresh the system tray." - (exwm--log) - (unless (exwm-workspace--minibuffer-own-frame-p) - (exwm-workspace--update-offsets) - (xcb:+request exwm-systemtray--connection - (make-instance 'xcb:ConfigureWindow - :window exwm-systemtray--embedder-window - :value-mask xcb:ConfigWindow:Y - :y (- (elt (elt exwm-workspace--workareas - exwm-workspace-current-index) - 3) - exwm-workspace--frame-y-offset - exwm-systemtray-height)))) - (exwm-systemtray--refresh)) - -(cl-defun exwm-systemtray--init () - "Initialize system tray module." - (exwm--log) - (cl-assert (not exwm-systemtray--connection)) - (cl-assert (not exwm-systemtray--list)) - (cl-assert (not exwm-systemtray--selection-owner-window)) - (cl-assert (not exwm-systemtray--embedder-window)) - (unless exwm-systemtray-height - (setq exwm-systemtray-height (max exwm-systemtray--icon-min-size - (line-pixel-height)))) - ;; Create a new connection. - (setq exwm-systemtray--connection (xcb:connect)) - (set-process-query-on-exit-flag (slot-value exwm-systemtray--connection - 'process) - nil) - ;; Initialize XELB modules. - (xcb:xembed:init exwm-systemtray--connection t) - (xcb:systemtray:init exwm-systemtray--connection t) - ;; Acquire the manager selection _NET_SYSTEM_TRAY_S0. - (with-slots (owner) - (xcb:+request-unchecked+reply exwm-systemtray--connection - (make-instance 'xcb:GetSelectionOwner - :selection xcb:Atom:_NET_SYSTEM_TRAY_S0)) - (when (/= owner xcb:Window:None) - (xcb:disconnect exwm-systemtray--connection) - (setq exwm-systemtray--connection nil) - (warn "[EXWM] Other system tray detected") - (cl-return-from exwm-systemtray--init))) - (let ((id (xcb:generate-id exwm-systemtray--connection))) - (setq exwm-systemtray--selection-owner-window id) - (xcb:+request exwm-systemtray--connection - (make-instance 'xcb:CreateWindow - :depth 0 - :wid id - :parent exwm--root - :x 0 - :y 0 - :width 1 - :height 1 - :border-width 0 - :class xcb:WindowClass:InputOnly - :visual 0 - :value-mask xcb:CW:OverrideRedirect - :override-redirect 1)) - ;; Get the selection ownership. - (xcb:+request exwm-systemtray--connection - (make-instance 'xcb:SetSelectionOwner - :owner id - :selection xcb:Atom:_NET_SYSTEM_TRAY_S0 - :time xcb:Time:CurrentTime)) - ;; Send a client message to announce the selection. - (xcb:+request exwm-systemtray--connection - (make-instance 'xcb:SendEvent - :propagate 0 - :destination exwm--root - :event-mask xcb:EventMask:StructureNotify - :event (xcb:marshal - (make-instance 'xcb:systemtray:-ClientMessage - :window exwm--root - :time xcb:Time:CurrentTime - :selection - xcb:Atom:_NET_SYSTEM_TRAY_S0 - :owner id) - exwm-systemtray--connection))) - ;; Set _NET_WM_NAME. - (xcb:+request exwm-systemtray--connection - (make-instance 'xcb:ewmh:set-_NET_WM_NAME - :window id - :data "EXWM: exwm-systemtray--selection-owner-window")) - ;; Set the _NET_SYSTEM_TRAY_ORIENTATION property. - (xcb:+request exwm-systemtray--connection - (make-instance 'xcb:xembed:set-_NET_SYSTEM_TRAY_ORIENTATION - :window id - :data xcb:systemtray:ORIENTATION:HORZ))) - ;; Create the embedder. - (let ((id (xcb:generate-id exwm-systemtray--connection)) - (background-pixel (exwm--color->pixel exwm-systemtray-background-color)) - frame parent depth y) - (setq exwm-systemtray--embedder-window id) - (if (exwm-workspace--minibuffer-own-frame-p) - (setq frame exwm-workspace--minibuffer - y (if (>= (line-pixel-height) exwm-systemtray-height) - ;; Bottom aligned. - (- (line-pixel-height) exwm-systemtray-height) - ;; Vertically centered. - (/ (- (line-pixel-height) exwm-systemtray-height) 2))) - (exwm-workspace--update-offsets) - (setq frame exwm-workspace--current - ;; Bottom aligned. - y (- (elt (elt exwm-workspace--workareas - exwm-workspace-current-index) - 3) - exwm-workspace--frame-y-offset - exwm-systemtray-height))) - (setq parent (string-to-number (frame-parameter frame 'window-id)) - depth (slot-value (xcb:+request-unchecked+reply - exwm-systemtray--connection - (make-instance 'xcb:GetGeometry - :drawable parent)) - 'depth)) - (xcb:+request exwm-systemtray--connection - (make-instance 'xcb:CreateWindow - :depth depth - :wid id - :parent parent - :x 0 - :y y - :width 1 - :height exwm-systemtray-height - :border-width 0 - :class xcb:WindowClass:InputOutput - :visual 0 - :value-mask (logior xcb:CW:BackPixmap - (if background-pixel - xcb:CW:BackPixel 0) - xcb:CW:EventMask) - :background-pixmap xcb:BackPixmap:ParentRelative - :background-pixel background-pixel - :event-mask xcb:EventMask:SubstructureNotify)) - ;; Set _NET_WM_NAME. - (xcb:+request exwm-systemtray--connection - (make-instance 'xcb:ewmh:set-_NET_WM_NAME - :window id - :data "EXWM: exwm-systemtray--embedder-window"))) - (xcb:flush exwm-systemtray--connection) - ;; Attach event listeners. - (xcb:+event exwm-systemtray--connection 'xcb:DestroyNotify - #'exwm-systemtray--on-DestroyNotify) - (xcb:+event exwm-systemtray--connection 'xcb:ReparentNotify - #'exwm-systemtray--on-ReparentNotify) - (xcb:+event exwm-systemtray--connection 'xcb:ResizeRequest - #'exwm-systemtray--on-ResizeRequest) - (xcb:+event exwm-systemtray--connection 'xcb:PropertyNotify - #'exwm-systemtray--on-PropertyNotify) - (xcb:+event exwm-systemtray--connection 'xcb:ClientMessage - #'exwm-systemtray--on-ClientMessage) - (unless (exwm-workspace--minibuffer-own-frame-p) - (xcb:+event exwm-systemtray--connection 'xcb:KeyPress - #'exwm-systemtray--on-KeyPress)) - ;; Add hook to move/reparent the embedder. - (add-hook 'exwm-workspace-switch-hook #'exwm-systemtray--on-workspace-switch) - (add-hook 'exwm-workspace--update-workareas-hook - #'exwm-systemtray--refresh-all) - (add-hook 'menu-bar-mode-hook #'exwm-systemtray--refresh-all) - (add-hook 'tool-bar-mode-hook #'exwm-systemtray--refresh-all) - (when (boundp 'exwm-randr-refresh-hook) - (add-hook 'exwm-randr-refresh-hook #'exwm-systemtray--refresh-all)) - ;; The struts can be updated already. - (when exwm-workspace--workareas - (exwm-systemtray--refresh-all))) - -(defun exwm-systemtray--exit () - "Exit the systemtray module." - (exwm--log) - (when exwm-systemtray--connection - ;; Hide & reparent out the embedder before disconnection to prevent - ;; embedded icons from being reparented to an Emacs frame (which is the - ;; parent of the embedder). - (xcb:+request exwm-systemtray--connection - (make-instance 'xcb:UnmapWindow - :window exwm-systemtray--embedder-window)) - (xcb:+request exwm-systemtray--connection - (make-instance 'xcb:ReparentWindow - :window exwm-systemtray--embedder-window - :parent exwm--root - :x 0 - :y 0)) - (xcb:disconnect exwm-systemtray--connection) - (setq exwm-systemtray--connection nil - exwm-systemtray--list nil - exwm-systemtray--selection-owner-window nil - exwm-systemtray--embedder-window nil) - (remove-hook 'exwm-workspace-switch-hook - #'exwm-systemtray--on-workspace-switch) - (remove-hook 'exwm-workspace--update-workareas-hook - #'exwm-systemtray--refresh-all) - (remove-hook 'menu-bar-mode-hook #'exwm-systemtray--refresh-all) - (remove-hook 'tool-bar-mode-hook #'exwm-systemtray--refresh-all) - (when (boundp 'exwm-randr-refresh-hook) - (remove-hook 'exwm-randr-refresh-hook #'exwm-systemtray--refresh-all)))) - -(defun exwm-systemtray-enable () - "Enable system tray support for EXWM." - (exwm--log) - (add-hook 'exwm-init-hook #'exwm-systemtray--init) - (add-hook 'exwm-exit-hook #'exwm-systemtray--exit)) - - - -(provide 'exwm-systemtray) - -;;; exwm-systemtray.el ends here |