a1cf0d9b85
* exwm-input.el (exwm-input--on-buffer-list-update): The way of detecting a switch from a `*temp*' buffer does not always work. Disable it until we find a better way.
1102 lines
46 KiB
EmacsLisp
1102 lines
46 KiB
EmacsLisp
;;; exwm-input.el --- Input Module for EXWM -*- lexical-binding: t -*-
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;; Copyright (C) 2015-2019 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 deals with key/mouse matters, including:
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;; + Input focus,
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;; + Key/Button event handling,
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;; + Key events filtering and simulation.
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;; Todo:
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;; + Pointer simulation mode (e.g. 'C-c 1'/'C-c 2' for single/double click,
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;; move with arrow keys).
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;; + Simulation keys to mimic Emacs key bindings for text edit (redo, select,
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;; cancel, clear, etc). Some of them are not present on common keyboard
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;; (keycode = 0). May need to use XKB extension.
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;;; Code:
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(require 'xcb-keysyms)
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(require 'exwm-core)
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(defgroup exwm-input nil
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"Input."
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:version "25.3"
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:group 'exwm)
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(defcustom exwm-input-prefix-keys
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'(?\C-x ?\C-u ?\C-h ?\M-x ?\M-` ?\M-& ?\M-:)
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"List of prefix keys EXWM should forward to Emacs when in line-mode.
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The point is to make keys like 'C-x C-f' forwarded to Emacs in line-mode.
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There is no need to add prefix keys for global/simulation keys or those
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defined in `exwm-mode-map' here."
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:type '(repeat key-sequence)
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:get (lambda (symbol)
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(mapcar #'vector (default-value symbol)))
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:set (lambda (symbol value)
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(set symbol (mapcar (lambda (i)
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(if (sequencep i)
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(aref i 0)
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i))
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value))))
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(defcustom exwm-input-move-event 's-down-mouse-1
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"Emacs event to start moving a window."
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:type 'key-sequence
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:get (lambda (symbol)
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(let ((value (default-value symbol)))
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(if (mouse-event-p value)
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value
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(vector value))))
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:set (lambda (symbol value)
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(set symbol (if (sequencep value)
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(aref value 0)
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value))))
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(defcustom exwm-input-resize-event 's-down-mouse-3
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"Emacs event to start resizing a window."
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:type 'key-sequence
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:get (lambda (symbol)
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(let ((value (default-value symbol)))
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(if (mouse-event-p value)
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value
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(vector value))))
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:set (lambda (symbol value)
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(set symbol (if (sequencep value)
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(aref value 0)
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value))))
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(defcustom exwm-input-line-mode-passthrough nil
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"Non-nil makes 'line-mode' forward all events to Emacs."
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:type 'boolean)
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;; Input focus update requests should be accumulated for a short time
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;; interval so that only the last one need to be processed. This not
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;; improves the overall performance, but avoids the problem of input
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;; focus loop, which is a result of the interaction with Emacs frames.
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;;
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;; FIXME: The time interval is hard to decide and perhaps machine-dependent.
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;; A value too small can cause redundant updates of input focus,
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;; and even worse, dead loops. OTOH a large value would bring
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;; laggy experience.
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(defconst exwm-input--update-focus-interval 0.01
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"Time interval (in seconds) for accumulating input focus update requests.")
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(defvar exwm-input--during-command nil
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"Indicate whether between `pre-command-hook' and `post-command-hook'.")
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(defvar exwm-input--global-keys nil "Global key bindings.")
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(defvar exwm-input--global-prefix-keys nil
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"List of prefix keys of global key bindings.")
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(defvar exwm-input--line-mode-cache nil "Cache for incomplete key sequence.")
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(defvar exwm-input--local-simulation-keys nil
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"Whether simulation keys are local.")
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(defvar exwm-input--simulation-keys nil "Simulation keys in line-mode.")
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(defvar exwm-input--skip-buffer-list-update nil
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"Skip the upcoming 'buffer-list-update'.")
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(defvar exwm-input--temp-line-mode nil
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"Non-nil indicates it's in temporary line-mode for char-mode.")
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(defvar exwm-input--timestamp-atom nil)
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(defvar exwm-input--timestamp-callback nil)
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(defvar exwm-input--timestamp-window nil)
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(defvar exwm-input--update-focus-defer-timer nil "Timer for polling the lock.")
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(defvar exwm-input--update-focus-lock nil
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"Lock for solving input focus update contention.")
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(defvar exwm-input--update-focus-timer nil
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"Timer for deferring the update of input focus.")
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(defvar exwm-input--update-focus-window nil "The (Emacs) window to be focused.
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This value should always be overwritten.")
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(defvar exwm-input--event-hook nil
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"Hook to run when EXWM receives an event.")
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(defvar exwm-workspace--current)
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(declare-function exwm-floating--do-moveresize "exwm-floating.el"
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(data _synthetic))
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(declare-function exwm-floating--start-moveresize "exwm-floating.el"
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(id &optional type))
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(declare-function exwm-floating--stop-moveresize "exwm-floating.el"
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(&rest _args))
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(declare-function exwm-layout--iconic-state-p "exwm-layout.el" (&optional id))
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(declare-function exwm-layout--show "exwm-layout.el" (id &optional window))
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(declare-function exwm-reset "exwm.el" ())
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(declare-function exwm-workspace--client-p "exwm-workspace.el"
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(&optional frame))
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(declare-function exwm-workspace--minibuffer-own-frame-p "exwm-workspace.el")
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(declare-function exwm-workspace--workspace-p "exwm-workspace.el" (workspace))
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(declare-function exwm-workspace-switch "exwm-workspace.el"
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(frame-or-index &optional force))
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(defun exwm-input--set-focus (id)
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"Set input focus to window ID in a proper way."
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(when (exwm--id->buffer id)
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(exwm--log "id=#x%x" id)
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(with-current-buffer (exwm--id->buffer id)
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(exwm-input--update-timestamp
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(lambda (timestamp id send-input-focus wm-take-focus)
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(when send-input-focus
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(xcb:+request exwm--connection
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(make-instance 'xcb:SetInputFocus
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:revert-to xcb:InputFocus:Parent
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:focus id
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:time timestamp)))
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(when wm-take-focus
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(let ((event (make-instance 'xcb:icccm:WM_TAKE_FOCUS
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:window id
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:time timestamp)))
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(setq event (xcb:marshal event exwm--connection))
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(xcb:+request exwm--connection
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(make-instance 'xcb:icccm:SendEvent
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:destination id
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:event event))))
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(exwm-input--set-active-window id)
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(xcb:flush exwm--connection))
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id
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(or exwm--hints-input
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(not (memq xcb:Atom:WM_TAKE_FOCUS exwm--protocols)))
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(memq xcb:Atom:WM_TAKE_FOCUS exwm--protocols)))))
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(defun exwm-input--update-timestamp (callback &rest args)
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"Fetch the latest timestamp from the server and feed it to CALLBACK.
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ARGS are additional arguments to CALLBACK."
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(setq exwm-input--timestamp-callback (cons callback args))
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(exwm--log)
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(xcb:+request exwm--connection
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(make-instance 'xcb:ChangeProperty
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:mode xcb:PropMode:Replace
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:window exwm-input--timestamp-window
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:property exwm-input--timestamp-atom
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:type xcb:Atom:CARDINAL
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:format 32
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:data-len 0
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:data nil))
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(xcb:flush exwm--connection))
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(defun exwm-input--on-PropertyNotify (data _synthetic)
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"Handle PropertyNotify events."
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(exwm--log)
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(when exwm-input--timestamp-callback
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(let ((obj (make-instance 'xcb:PropertyNotify)))
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(xcb:unmarshal obj data)
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(when (= exwm-input--timestamp-window
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(slot-value obj 'window))
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(apply (car exwm-input--timestamp-callback)
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(slot-value obj 'time)
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(cdr exwm-input--timestamp-callback))
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(setq exwm-input--timestamp-callback nil)))))
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(defvar exwm-input--last-enter-notify-position nil)
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(defun exwm-input--on-EnterNotify (data _synthetic)
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"Handle EnterNotify events."
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(let ((evt (make-instance 'xcb:EnterNotify))
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buffer window frame frame-xid edges fake-evt)
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(xcb:unmarshal evt data)
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(with-slots (time root event root-x root-y event-x event-y state) evt
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(setq buffer (exwm--id->buffer event)
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window (get-buffer-window buffer t))
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(exwm--log "buffer=%s; window=%s" buffer window)
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(when (and buffer window (not (eq window (selected-window)))
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(not (equal exwm-input--last-enter-notify-position
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(vector root-x root-y))))
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(setq frame (window-frame window)
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frame-xid (frame-parameter frame 'exwm-id))
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(unless (eq frame exwm-workspace--current)
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(if (exwm-workspace--workspace-p frame)
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;; The X window is on another workspace.
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(exwm-workspace-switch frame)
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(with-current-buffer buffer
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(when (and (derived-mode-p 'exwm-mode)
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(not (eq exwm--frame exwm-workspace--current)))
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;; The floating X window is on another workspace.
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(exwm-workspace-switch exwm--frame)))))
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;; Send a fake MotionNotify event to Emacs.
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(setq edges (window-inside-pixel-edges window)
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fake-evt (make-instance 'xcb:MotionNotify
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:detail 0
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:time time
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:root root
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:event frame-xid
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:child xcb:Window:None
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:root-x root-x
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:root-y root-y
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:event-x (+ event-x (elt edges 0))
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:event-y (+ event-y (elt edges 1))
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:state state
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:same-screen 1))
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(xcb:+request exwm--connection
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(make-instance 'xcb:SendEvent
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:propagate 0
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:destination frame-xid
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:event-mask xcb:EventMask:NoEvent
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:event (xcb:marshal fake-evt exwm--connection)))
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(xcb:flush exwm--connection))
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(setq exwm-input--last-enter-notify-position (vector root-x root-y)))))
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(defun exwm-input--on-keysyms-update ()
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(exwm--log)
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(let ((exwm-input--global-prefix-keys nil))
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(exwm-input--update-global-prefix-keys)))
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(defun exwm-input--on-buffer-list-update ()
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"Run in `buffer-list-update-hook' to track input focus."
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(when (and (not (eq this-command #'handle-switch-frame))
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(not exwm-input--skip-buffer-list-update)
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(not (exwm-workspace--client-p))
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(eq (current-buffer) (window-buffer)))
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(exwm--log "current-buffer=%S selected-window=%S"
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(current-buffer) (selected-window))
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(redirect-frame-focus (selected-frame) nil)
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(setq exwm-input--update-focus-window (selected-window))
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(exwm-input--update-focus-defer)))
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(defun exwm-input--update-focus-defer ()
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"Defer updating input focus."
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(when exwm-input--update-focus-defer-timer
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(cancel-timer exwm-input--update-focus-defer-timer))
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(if exwm-input--update-focus-lock
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(setq exwm-input--update-focus-defer-timer
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(exwm--defer 0 #'exwm-input--update-focus-defer))
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(setq exwm-input--update-focus-defer-timer nil)
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(when exwm-input--update-focus-timer
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(cancel-timer exwm-input--update-focus-timer))
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(setq exwm-input--update-focus-timer
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;; Attempt to accumulate successive events close enough.
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(run-with-timer exwm-input--update-focus-interval
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nil
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#'exwm-input--update-focus-commit
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exwm-input--update-focus-window))))
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(defun exwm-input--update-focus-commit (window)
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"Commit updating input focus."
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(setq exwm-input--update-focus-lock t)
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(unwind-protect
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(exwm-input--update-focus window)
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(setq exwm-input--update-focus-lock nil)))
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(defun exwm-input--update-focus (window)
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"Update input focus."
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(when (window-live-p window)
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(exwm--log "focus-window=%s focus-buffer=%s" window (window-buffer window))
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(with-current-buffer (window-buffer window)
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(if (derived-mode-p 'exwm-mode)
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(if (not (eq exwm--frame exwm-workspace--current))
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(progn
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(set-frame-parameter exwm--frame 'exwm-selected-window window)
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(exwm--defer 0 #'exwm-workspace-switch exwm--frame))
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(exwm--log "Set focus on #x%x" exwm--id)
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(when exwm--floating-frame
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;; Adjust stacking orders of the floating X window.
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(xcb:+request exwm--connection
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(make-instance 'xcb:ConfigureWindow
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:window exwm--id
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:value-mask xcb:ConfigWindow:StackMode
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:stack-mode xcb:StackMode:TopIf))
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(xcb:+request exwm--connection
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(make-instance 'xcb:ConfigureWindow
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:window (frame-parameter exwm--floating-frame
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'exwm-container)
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:value-mask (logior
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xcb:ConfigWindow:Sibling
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xcb:ConfigWindow:StackMode)
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:sibling exwm--id
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:stack-mode xcb:StackMode:Below))
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;; This floating X window might be hide by `exwm-floating-hide'.
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(when (exwm-layout--iconic-state-p)
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(exwm-layout--show exwm--id window))
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(xcb:flush exwm--connection))
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(exwm-input--set-focus exwm--id))
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(when (eq (selected-window) window)
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(exwm--log "Focus on %s" window)
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(if (and (exwm-workspace--workspace-p (selected-frame))
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(not (eq (selected-frame) exwm-workspace--current)))
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;; The focus is on another workspace (e.g. it got clicked)
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;; so switch to it.
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(progn
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(exwm--log "Switching to %s's workspace %s (%s)"
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window
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(window-frame window)
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(selected-frame))
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(set-frame-parameter (selected-frame) 'exwm-selected-window
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window)
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(exwm--defer 0 #'exwm-workspace-switch (selected-frame)))
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;; The focus is still on the current workspace.
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(if (not (and (exwm-workspace--minibuffer-own-frame-p)
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(minibufferp)))
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(x-focus-frame (window-frame window))
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;; X input focus should be set on the previously selected
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;; frame.
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(x-focus-frame (window-frame (minibuffer-window))))
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(exwm-input--set-active-window)
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(xcb:flush exwm--connection)))))))
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(defun exwm-input--set-active-window (&optional id)
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"Set _NET_ACTIVE_WINDOW."
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(exwm--log)
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(xcb:+request exwm--connection
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(make-instance 'xcb:ewmh:set-_NET_ACTIVE_WINDOW
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:window exwm--root
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:data (or id xcb:Window:None))))
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(defun exwm-input--on-ButtonPress (data _synthetic)
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"Handle ButtonPress event."
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(let ((obj (make-instance 'xcb:ButtonPress))
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(mode xcb:Allow:SyncPointer)
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button-event window buffer frame)
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(xcb:unmarshal obj data)
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(exwm--log "major-mode=%s buffer=%s"
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major-mode (buffer-name (current-buffer)))
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(with-slots (detail event state) obj
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(setq button-event (xcb:keysyms:keysym->event exwm--connection
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detail state)
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buffer (exwm--id->buffer event)
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window (get-buffer-window buffer t))
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(cond ((and (eq button-event exwm-input-move-event)
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buffer
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;; Either an undecorated or a floating X window.
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(with-current-buffer buffer
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(or (not (derived-mode-p 'exwm-mode))
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exwm--floating-frame)))
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;; Move
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(exwm-floating--start-moveresize
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event xcb:ewmh:_NET_WM_MOVERESIZE_MOVE))
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((and (eq button-event exwm-input-resize-event)
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buffer
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(with-current-buffer buffer
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(or (not (derived-mode-p 'exwm-mode))
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exwm--floating-frame)))
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;; Resize
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(exwm-floating--start-moveresize event))
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(buffer
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;; Click to focus
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(unless (eq window (selected-window))
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(setq frame (window-frame window))
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(unless (eq frame exwm-workspace--current)
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(if (exwm-workspace--workspace-p frame)
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;; The X window is on another workspace
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(exwm-workspace-switch frame)
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(with-current-buffer buffer
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(when (and (derived-mode-p 'exwm-mode)
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(not (eq exwm--frame
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exwm-workspace--current)))
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;; The floating X window is on another workspace
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(exwm-workspace-switch exwm--frame)))))
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;; It has been reported that the `window' may have be deleted
|
||
(if (window-live-p window)
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(select-window window)
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(setq window (get-buffer-window buffer t))
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(when window (select-window window))))
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;; Also process keybindings.
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(with-current-buffer buffer
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(when (derived-mode-p 'exwm-mode)
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(cl-case exwm--input-mode
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(line-mode
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(setq mode (exwm-input--on-ButtonPress-line-mode
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buffer button-event)))
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(char-mode
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(setq mode (exwm-input--on-ButtonPress-char-mode)))))))
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(t
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;; Replay this event by default.
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(setq mode xcb:Allow:ReplayPointer))))
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(xcb:+request exwm--connection
|
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(make-instance 'xcb:AllowEvents :mode mode :time xcb:Time:CurrentTime))
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(xcb:flush exwm--connection))
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||
(run-hooks 'exwm-input--event-hook))
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|
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(defun exwm-input--on-KeyPress (data _synthetic)
|
||
"Handle KeyPress event."
|
||
(let ((obj (make-instance 'xcb:KeyPress)))
|
||
(xcb:unmarshal obj data)
|
||
(exwm--log "major-mode=%s buffer=%s"
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major-mode (buffer-name (current-buffer)))
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(if (derived-mode-p 'exwm-mode)
|
||
(cl-case exwm--input-mode
|
||
(line-mode
|
||
(exwm-input--on-KeyPress-line-mode obj data))
|
||
(char-mode
|
||
(exwm-input--on-KeyPress-char-mode obj data)))
|
||
(exwm-input--on-KeyPress-char-mode obj)))
|
||
(run-hooks 'exwm-input--event-hook))
|
||
|
||
(defun exwm-input--on-CreateNotify (data _synthetic)
|
||
"Handle CreateNotify events."
|
||
(exwm--log)
|
||
(let ((evt (make-instance 'xcb:CreateNotify)))
|
||
(xcb:unmarshal evt data)
|
||
(with-slots (window) evt
|
||
(exwm-input--grab-global-prefix-keys window))))
|
||
|
||
(defun exwm-input--update-global-prefix-keys ()
|
||
"Update `exwm-input--global-prefix-keys'."
|
||
(exwm--log)
|
||
(when exwm--connection
|
||
(let ((original exwm-input--global-prefix-keys))
|
||
(setq exwm-input--global-prefix-keys nil)
|
||
(dolist (i exwm-input--global-keys)
|
||
(cl-pushnew (elt i 0) exwm-input--global-prefix-keys))
|
||
(unless (equal original exwm-input--global-prefix-keys)
|
||
(apply #'exwm-input--grab-global-prefix-keys
|
||
(slot-value (xcb:+request-unchecked+reply exwm--connection
|
||
(make-instance 'xcb:QueryTree
|
||
:window exwm--root))
|
||
'children))))))
|
||
|
||
(defun exwm-input--grab-global-prefix-keys (&rest xwins)
|
||
(exwm--log)
|
||
(let ((req (make-instance 'xcb:GrabKey
|
||
:owner-events 0
|
||
:grab-window nil
|
||
:modifiers nil
|
||
:key nil
|
||
:pointer-mode xcb:GrabMode:Async
|
||
:keyboard-mode xcb:GrabMode:Async))
|
||
keysyms keycode alt-modifier)
|
||
(dolist (k exwm-input--global-prefix-keys)
|
||
(setq keysyms (xcb:keysyms:event->keysyms exwm--connection k)
|
||
keycode (xcb:keysyms:keysym->keycode exwm--connection
|
||
(caar keysyms)))
|
||
(exwm--log "Grabbing key=%s (keysyms=%s keycode=%s)"
|
||
(single-key-description k) keysyms keycode)
|
||
(dolist (keysym keysyms)
|
||
(setf (slot-value req 'modifiers) (cdr keysym)
|
||
(slot-value req 'key) keycode)
|
||
;; Also grab this key with num-lock mask set.
|
||
(when (and (/= 0 xcb:keysyms:num-lock-mask)
|
||
(= 0 (logand (cdr keysym) xcb:keysyms:num-lock-mask)))
|
||
(setf alt-modifier (logior (cdr keysym) xcb:keysyms:num-lock-mask)))
|
||
(dolist (xwin xwins)
|
||
(setf (slot-value req 'grab-window) xwin)
|
||
(xcb:+request exwm--connection req)
|
||
(when alt-modifier
|
||
(setf (slot-value req 'modifiers) alt-modifier)
|
||
(xcb:+request exwm--connection req)))))
|
||
(xcb:flush exwm--connection)))
|
||
|
||
(defun exwm-input--set-key (key command)
|
||
(exwm--log "key: %s, command: %s" key command)
|
||
(global-set-key key command)
|
||
(cl-pushnew key exwm-input--global-keys))
|
||
|
||
(defcustom exwm-input-global-keys nil
|
||
"Global keys.
|
||
|
||
It is an alist of the form (key . command), meaning giving KEY (a key
|
||
sequence) a global binding as COMMAND.
|
||
|
||
Notes:
|
||
* Setting the value directly (rather than customizing it) after EXWM
|
||
finishes initialization has no effect."
|
||
:type '(alist :key-type key-sequence :value-type function)
|
||
:set (lambda (symbol value)
|
||
(when (boundp symbol)
|
||
(dolist (i (symbol-value symbol))
|
||
(global-unset-key (car i))))
|
||
(set symbol value)
|
||
(setq exwm-input--global-keys nil)
|
||
(dolist (i value)
|
||
(exwm-input--set-key (car i) (cdr i)))
|
||
(when exwm--connection
|
||
(exwm-input--update-global-prefix-keys))))
|
||
|
||
;;;###autoload
|
||
(defun exwm-input-set-key (key command)
|
||
"Set a global key binding.
|
||
|
||
The new key binding only takes effect in real time when this command is
|
||
called interactively, and is lost when this session ends unless it's
|
||
specifically saved in the Customize interface for `exwm-input-global-keys'.
|
||
|
||
In configuration you should customize or set `exwm-input-global-keys'
|
||
instead."
|
||
(interactive "KSet key globally: \nCSet key %s to command: ")
|
||
(exwm--log)
|
||
(setq exwm-input-global-keys (append exwm-input-global-keys
|
||
(list (cons key command))))
|
||
(exwm-input--set-key key command)
|
||
(when (called-interactively-p 'any)
|
||
(exwm-input--update-global-prefix-keys)))
|
||
|
||
;; Putting (t . EVENT) into `unread-command-events' does not really work
|
||
;; as documented for Emacs < 26.2.
|
||
(eval-and-compile
|
||
(if (or (< emacs-major-version 26)
|
||
(and (= emacs-major-version 26)
|
||
(< emacs-minor-version 2)))
|
||
(defsubst exwm-input--unread-event (event)
|
||
(setq unread-command-events
|
||
(append unread-command-events (list event))))
|
||
(defsubst exwm-input--unread-event (event)
|
||
(setq unread-command-events
|
||
(append unread-command-events `((t . ,event)))))))
|
||
|
||
(defun exwm-input--mimic-read-event (event)
|
||
"Process EVENT as if it were returned by `read-event'."
|
||
(exwm--log)
|
||
(unless (eq 0 extra-keyboard-modifiers)
|
||
(setq event (event-convert-list (append (event-modifiers
|
||
extra-keyboard-modifiers)
|
||
event))))
|
||
(when (characterp event)
|
||
(let ((event* (when keyboard-translate-table
|
||
(aref keyboard-translate-table event))))
|
||
(when event*
|
||
(setq event event*))))
|
||
event)
|
||
|
||
(cl-defun exwm-input--translate (key)
|
||
(let (translation)
|
||
(dolist (map (list input-decode-map
|
||
local-function-key-map
|
||
key-translation-map))
|
||
(setq translation (lookup-key map key))
|
||
(if (functionp translation)
|
||
(cl-return-from exwm-input--translate (funcall translation nil))
|
||
(when (vectorp translation)
|
||
(cl-return-from exwm-input--translate translation)))))
|
||
key)
|
||
|
||
(defun exwm-input--cache-event (event &optional temp-line-mode)
|
||
"Cache EVENT."
|
||
(exwm--log "%s" event)
|
||
(setq exwm-input--line-mode-cache
|
||
(vconcat exwm-input--line-mode-cache (vector event)))
|
||
;; Attempt to translate this key sequence.
|
||
(setq exwm-input--line-mode-cache
|
||
(exwm-input--translate exwm-input--line-mode-cache))
|
||
;; When the key sequence is complete (not a keymap).
|
||
;; Note that `exwm-input--line-mode-cache' might get translated to nil, for
|
||
;; example 'mouse--down-1-maybe-follows-link' does this.
|
||
(if (and exwm-input--line-mode-cache
|
||
(keymapp (key-binding exwm-input--line-mode-cache)))
|
||
;; Grab keyboard temporarily to intercept the complete key sequence.
|
||
(when temp-line-mode
|
||
(setq exwm-input--temp-line-mode t)
|
||
(exwm-input--grab-keyboard))
|
||
(setq exwm-input--line-mode-cache nil)
|
||
(when exwm-input--temp-line-mode
|
||
(setq exwm-input--temp-line-mode nil)
|
||
(exwm-input--release-keyboard))))
|
||
|
||
(defun exwm-input--event-passthrough-p (event)
|
||
"Whether EVENT should be passed to Emacs.
|
||
Current buffer must be an `exwm-mode' buffer."
|
||
(or exwm-input-line-mode-passthrough
|
||
exwm-input--during-command
|
||
;; Forward the event when there is an incomplete key
|
||
;; sequence or when the minibuffer is active.
|
||
exwm-input--line-mode-cache
|
||
(eq (active-minibuffer-window) (selected-window))
|
||
;;
|
||
(memq event exwm-input--global-prefix-keys)
|
||
(memq event exwm-input-prefix-keys)
|
||
(when overriding-terminal-local-map
|
||
(lookup-key overriding-terminal-local-map
|
||
(vector event)))
|
||
(lookup-key (current-local-map) (vector event))
|
||
(gethash event exwm-input--simulation-keys)))
|
||
|
||
(defun exwm-input--on-KeyPress-line-mode (key-press raw-data)
|
||
"Parse X KeyPress event to Emacs key event and then feed the command loop."
|
||
(with-slots (detail state) key-press
|
||
(let ((keysym (xcb:keysyms:keycode->keysym exwm--connection detail state))
|
||
event raw-event mode)
|
||
(exwm--log "%s" keysym)
|
||
(when (and (/= 0 (car keysym))
|
||
(setq raw-event (xcb:keysyms:keysym->event
|
||
exwm--connection (car keysym)
|
||
(logand state (lognot (cdr keysym)))))
|
||
(setq event (exwm-input--mimic-read-event raw-event))
|
||
(exwm-input--event-passthrough-p event))
|
||
(setq mode xcb:Allow:AsyncKeyboard)
|
||
(exwm-input--cache-event event)
|
||
(exwm-input--unread-event raw-event))
|
||
(unless mode
|
||
(if (= 0 (logand #x6000 state)) ;Check the 13~14 bits.
|
||
;; Not an XKB state; just replay it.
|
||
(setq mode xcb:Allow:ReplayKeyboard)
|
||
;; An XKB state; sent it with SendEvent.
|
||
;; FIXME: Can this also be replayed?
|
||
;; FIXME: KeyRelease events are lost.
|
||
(setq mode xcb:Allow:AsyncKeyboard)
|
||
(xcb:+request exwm--connection
|
||
(make-instance 'xcb:SendEvent
|
||
:propagate 0
|
||
:destination (slot-value key-press 'event)
|
||
:event-mask xcb:EventMask:NoEvent
|
||
:event raw-data)))
|
||
;; Make Emacs aware of this event when defining keyboard macros.
|
||
(when (and defining-kbd-macro event)
|
||
(set-transient-map '(keymap (t . (lambda () (interactive)))))
|
||
(exwm-input--unread-event event)))
|
||
(xcb:+request exwm--connection
|
||
(make-instance 'xcb:AllowEvents
|
||
:mode mode
|
||
:time xcb:Time:CurrentTime))
|
||
(xcb:flush exwm--connection))))
|
||
|
||
(defun exwm-input--on-KeyPress-char-mode (key-press &optional _raw-data)
|
||
"Handle KeyPress event in char-mode."
|
||
(with-slots (detail state) key-press
|
||
(let ((keysym (xcb:keysyms:keycode->keysym exwm--connection detail state))
|
||
event raw-event)
|
||
(exwm--log "%s" keysym)
|
||
(when (and (/= 0 (car keysym))
|
||
(setq raw-event (xcb:keysyms:keysym->event
|
||
exwm--connection (car keysym)
|
||
(logand state (lognot (cdr keysym)))))
|
||
(setq event (exwm-input--mimic-read-event raw-event)))
|
||
(if (not (derived-mode-p 'exwm-mode))
|
||
(exwm-input--unread-event raw-event)
|
||
(exwm-input--cache-event event t)
|
||
(exwm-input--unread-event raw-event)))))
|
||
(xcb:+request exwm--connection
|
||
(make-instance 'xcb:AllowEvents
|
||
:mode xcb:Allow:AsyncKeyboard
|
||
:time xcb:Time:CurrentTime))
|
||
(xcb:flush exwm--connection))
|
||
|
||
(defun exwm-input--on-ButtonPress-line-mode (buffer button-event)
|
||
"Handle button events in line mode.
|
||
BUFFER is the `exwm-mode' buffer the event was generated
|
||
on. BUTTON-EVENT is the X event converted into an Emacs event.
|
||
|
||
The return value is used as event_mode to release the original
|
||
button event."
|
||
(with-current-buffer buffer
|
||
(let ((read-event (exwm-input--mimic-read-event button-event)))
|
||
(exwm--log "%s" read-event)
|
||
(if (and read-event
|
||
(exwm-input--event-passthrough-p read-event))
|
||
;; The event should be forwarded to emacs
|
||
(progn
|
||
(exwm-input--cache-event read-event)
|
||
(exwm-input--unread-event button-event)
|
||
xcb:Allow:SyncPointer)
|
||
;; The event should be replayed
|
||
xcb:Allow:ReplayPointer))))
|
||
|
||
(defun exwm-input--on-ButtonPress-char-mode ()
|
||
"Handle button events in char-mode.
|
||
The return value is used as event_mode to release the original
|
||
button event."
|
||
(exwm--log)
|
||
xcb:Allow:ReplayPointer)
|
||
|
||
(defun exwm-input--update-mode-line (id)
|
||
"Update the propertized `mode-line-process' for window ID."
|
||
(exwm--log "#x%x" id)
|
||
(let (help-echo cmd mode)
|
||
(cl-case exwm--input-mode
|
||
(line-mode
|
||
(setq mode "line"
|
||
help-echo "mouse-1: Switch to char-mode"
|
||
cmd (lambda ()
|
||
(interactive)
|
||
(exwm-input-release-keyboard id))))
|
||
(char-mode
|
||
(setq mode "char"
|
||
help-echo "mouse-1: Switch to line-mode"
|
||
cmd (lambda ()
|
||
(interactive)
|
||
(exwm-input-grab-keyboard id)))))
|
||
(with-current-buffer (exwm--id->buffer id)
|
||
(setq mode-line-process
|
||
`(": "
|
||
(:propertize ,mode
|
||
help-echo ,help-echo
|
||
mouse-face mode-line-highlight
|
||
local-map
|
||
(keymap
|
||
(mode-line
|
||
keymap
|
||
(down-mouse-1 . ,cmd))))))
|
||
(force-mode-line-update))))
|
||
|
||
(defun exwm-input--grab-keyboard (&optional id)
|
||
"Grab all key events on window ID."
|
||
(unless id (setq id (exwm--buffer->id (window-buffer))))
|
||
(when id
|
||
(exwm--log "id=#x%x" id)
|
||
(when (xcb:+request-checked+request-check exwm--connection
|
||
(make-instance 'xcb:GrabKey
|
||
:owner-events 0
|
||
:grab-window id
|
||
:modifiers xcb:ModMask:Any
|
||
:key xcb:Grab:Any
|
||
:pointer-mode xcb:GrabMode:Async
|
||
:keyboard-mode xcb:GrabMode:Sync))
|
||
(exwm--log "Failed to grab keyboard for #x%x" id))
|
||
(with-current-buffer (exwm--id->buffer id)
|
||
(setq exwm--input-mode 'line-mode))))
|
||
|
||
(defun exwm-input--release-keyboard (&optional id)
|
||
"Ungrab all key events on window ID."
|
||
(unless id (setq id (exwm--buffer->id (window-buffer))))
|
||
(when id
|
||
(exwm--log "id=#x%x" id)
|
||
(when (xcb:+request-checked+request-check exwm--connection
|
||
(make-instance 'xcb:UngrabKey
|
||
:key xcb:Grab:Any
|
||
:grab-window id
|
||
:modifiers xcb:ModMask:Any))
|
||
(exwm--log "Failed to release keyboard for #x%x" id))
|
||
(exwm-input--grab-global-prefix-keys id)
|
||
(with-current-buffer (exwm--id->buffer id)
|
||
(setq exwm--input-mode 'char-mode))))
|
||
|
||
;;;###autoload
|
||
(defun exwm-input-grab-keyboard (&optional id)
|
||
"Switch to line-mode."
|
||
(interactive (list (when (derived-mode-p 'exwm-mode)
|
||
(exwm--buffer->id (window-buffer)))))
|
||
(when id
|
||
(exwm--log "id=#x%x" id)
|
||
(setq exwm--selected-input-mode 'line-mode)
|
||
(exwm-input--grab-keyboard id)
|
||
(exwm-input--update-mode-line id)))
|
||
|
||
;;;###autoload
|
||
(defun exwm-input-release-keyboard (&optional id)
|
||
"Switch to char-mode."
|
||
(interactive (list (when (derived-mode-p 'exwm-mode)
|
||
(exwm--buffer->id (window-buffer)))))
|
||
(when id
|
||
(exwm--log "id=#x%x" id)
|
||
(setq exwm--selected-input-mode 'char-mode)
|
||
(exwm-input--release-keyboard id)
|
||
(exwm-input--update-mode-line id)))
|
||
|
||
;;;###autoload
|
||
(defun exwm-input-toggle-keyboard (&optional id)
|
||
"Toggle between 'line-mode' and 'char-mode'."
|
||
(interactive (list (when (derived-mode-p 'exwm-mode)
|
||
(exwm--buffer->id (window-buffer)))))
|
||
(when id
|
||
(exwm--log "id=#x%x" id)
|
||
(with-current-buffer (exwm--id->buffer id)
|
||
(cl-case exwm--input-mode
|
||
(line-mode
|
||
(exwm-input-release-keyboard id))
|
||
(char-mode
|
||
(exwm-reset))))))
|
||
|
||
(defun exwm-input--fake-key (event)
|
||
"Fake a key event equivalent to Emacs event EVENT."
|
||
(let* ((keysyms (xcb:keysyms:event->keysyms exwm--connection event))
|
||
keycode id)
|
||
(when (= 0 (caar keysyms))
|
||
(user-error "[EXWM] Invalid key: %s" (single-key-description event)))
|
||
(setq keycode (xcb:keysyms:keysym->keycode exwm--connection
|
||
(caar keysyms)))
|
||
(when (/= 0 keycode)
|
||
(setq id (exwm--buffer->id (window-buffer (selected-window))))
|
||
(exwm--log "id=#x%x event=%s keycode" id event keycode)
|
||
(dolist (class '(xcb:KeyPress xcb:KeyRelease))
|
||
(xcb:+request exwm--connection
|
||
(make-instance 'xcb:SendEvent
|
||
:propagate 0 :destination id
|
||
:event-mask xcb:EventMask:NoEvent
|
||
:event (xcb:marshal
|
||
(make-instance class
|
||
:detail keycode
|
||
:time xcb:Time:CurrentTime
|
||
:root exwm--root :event id
|
||
:child 0
|
||
:root-x 0 :root-y 0
|
||
:event-x 0 :event-y 0
|
||
:state (cdar keysyms)
|
||
:same-screen 1)
|
||
exwm--connection)))))
|
||
(xcb:flush exwm--connection)))
|
||
|
||
;;;###autoload
|
||
(cl-defun exwm-input-send-next-key (times &optional end-key)
|
||
"Send next key to client window.
|
||
|
||
EXWM will prompt for the key to send. This command can be prefixed to send
|
||
multiple keys. If END-KEY is non-nil, stop sending keys if it's pressed."
|
||
(interactive "p")
|
||
(exwm--log)
|
||
(unless (derived-mode-p 'exwm-mode)
|
||
(cl-return-from exwm-input-send-next-key))
|
||
(when (> times 12) (setq times 12))
|
||
(let (key keys)
|
||
(dotimes (i times)
|
||
;; Skip events not from keyboard
|
||
(let ((exwm-input-line-mode-passthrough t))
|
||
(catch 'break
|
||
(while t
|
||
(setq key (read-key (format "Send key: %s (%d/%d) %s"
|
||
(key-description keys)
|
||
(1+ i) times
|
||
(if end-key
|
||
(concat "To exit, press: "
|
||
(key-description
|
||
(list end-key)))
|
||
""))))
|
||
(unless (listp key) (throw 'break nil)))))
|
||
(setq keys (vconcat keys (vector key)))
|
||
(when (eq key end-key) (cl-return-from exwm-input-send-next-key))
|
||
(exwm-input--fake-key key))))
|
||
|
||
(defun exwm-input--set-simulation-keys (simulation-keys &optional no-refresh)
|
||
"Set simulation keys."
|
||
(exwm--log "%s" simulation-keys)
|
||
(unless no-refresh
|
||
;; Unbind simulation keys.
|
||
(let ((hash (buffer-local-value 'exwm-input--simulation-keys
|
||
(current-buffer))))
|
||
(when (hash-table-p hash)
|
||
(maphash (lambda (key _value)
|
||
(when (sequencep key)
|
||
(if exwm-input--local-simulation-keys
|
||
(local-unset-key key)
|
||
(define-key exwm-mode-map key nil))))
|
||
hash)))
|
||
;; Abandon the old hash table.
|
||
(setq exwm-input--simulation-keys (make-hash-table :test #'equal)))
|
||
(dolist (i simulation-keys)
|
||
(let ((original (vconcat (car i)))
|
||
(simulated (cdr i)))
|
||
(setq simulated (if (sequencep simulated)
|
||
(append simulated nil)
|
||
(list simulated)))
|
||
;; The key stored is a key sequence (vector).
|
||
;; The value stored is a list of key events.
|
||
(puthash original simulated exwm-input--simulation-keys)
|
||
;; Also mark the prefix key as used.
|
||
(puthash (aref original 0) t exwm-input--simulation-keys)))
|
||
;; Update keymaps.
|
||
(maphash (lambda (key _value)
|
||
(when (sequencep key)
|
||
(if exwm-input--local-simulation-keys
|
||
(local-set-key key #'exwm-input-send-simulation-key)
|
||
(define-key exwm-mode-map key
|
||
#'exwm-input-send-simulation-key))))
|
||
exwm-input--simulation-keys))
|
||
|
||
(defun exwm-input-set-simulation-keys (simulation-keys)
|
||
"Please customize or set `exwm-input-simulation-keys' instead."
|
||
(declare (obsolete nil "26"))
|
||
(exwm-input--set-simulation-keys simulation-keys))
|
||
|
||
(defcustom exwm-input-simulation-keys nil
|
||
"Simulation keys.
|
||
|
||
It is an alist of the form (original-key . simulated-key), where both
|
||
original-key and simulated-key are key sequences. Original-key is what you
|
||
type to an X window in line-mode which then gets translated to simulated-key
|
||
by EXWM and forwarded to the X window.
|
||
|
||
Notes:
|
||
* Setting the value directly (rather than customizing it) after EXWM
|
||
finishes initialization has no effect.
|
||
* Original-keys consist of multiple key events are only supported in Emacs
|
||
26.2 and later.
|
||
* A minority of applications do not accept simulated keys by default. It's
|
||
required to customize them to accept events sent by SendEvent.
|
||
* The predefined examples in the Customize interface are not guaranteed to
|
||
work for all applications. This can be tweaked on a per application basis
|
||
with `exwm-input-set-local-simulation-keys'."
|
||
:type '(alist :key-type (key-sequence :tag "Original")
|
||
:value-type (choice (key-sequence :tag "User-defined")
|
||
(key-sequence :tag "Move left" [left])
|
||
(key-sequence :tag "Move right" [right])
|
||
(key-sequence :tag "Move up" [up])
|
||
(key-sequence :tag "Move down" [down])
|
||
(key-sequence :tag "Move to BOL" [home])
|
||
(key-sequence :tag "Move to EOL" [end])
|
||
(key-sequence :tag "Page up" [prior])
|
||
(key-sequence :tag "Page down" [next])
|
||
(key-sequence :tag "Copy" [C-c])
|
||
(key-sequence :tag "Paste" [C-v])
|
||
(key-sequence :tag "Delete" [delete])
|
||
(key-sequence :tag "Delete to EOL"
|
||
[S-end delete])))
|
||
:set (lambda (symbol value)
|
||
(set symbol value)
|
||
(exwm-input--set-simulation-keys value)))
|
||
|
||
(cl-defun exwm-input--read-keys (prompt stop-key)
|
||
(let ((cursor-in-echo-area t)
|
||
keys key)
|
||
(while (not (eq key stop-key))
|
||
(setq key (read-key (format "%s (terminate with %s): %s"
|
||
prompt
|
||
(key-description (vector stop-key))
|
||
(key-description keys)))
|
||
keys (vconcat keys (vector key))))
|
||
(substring keys 0 -1)))
|
||
|
||
;;;###autoload
|
||
(defun exwm-input-set-simulation-key (original-key simulated-key)
|
||
"Set a simulation key.
|
||
|
||
The simulation key takes effect in real time, but is lost when this session
|
||
ends unless it's specifically saved in the Customize interface for
|
||
`exwm-input-simulation-keys'."
|
||
(interactive
|
||
(let (original simulated)
|
||
(setq original (exwm-input--read-keys "Original keys" ?\C-g))
|
||
(when original
|
||
(setq simulated (exwm-input--read-keys
|
||
(format "Simulate %s as" (key-description original))
|
||
?\C-g)))
|
||
(list original simulated)))
|
||
(exwm--log "original: %s, simulated: %s" original-key simulated-key)
|
||
(when (and original-key simulated-key)
|
||
(let ((entry `((,original-key . ,simulated-key))))
|
||
(setq exwm-input-simulation-keys (append exwm-input-simulation-keys
|
||
entry))
|
||
(exwm-input--set-simulation-keys entry t))))
|
||
|
||
(defun exwm-input--unset-simulation-keys ()
|
||
"Clear simulation keys and key bindings defined."
|
||
(exwm--log)
|
||
(when (hash-table-p exwm-input--simulation-keys)
|
||
(maphash (lambda (key _value)
|
||
(when (sequencep key)
|
||
(define-key exwm-mode-map key nil)))
|
||
exwm-input--simulation-keys)
|
||
(clrhash exwm-input--simulation-keys)))
|
||
|
||
(defun exwm-input-set-local-simulation-keys (simulation-keys)
|
||
"Set buffer-local simulation keys.
|
||
|
||
SIMULATION-KEYS is an alist of the form (original-key . simulated-key),
|
||
where both ORIGINAL-KEY and SIMULATED-KEY are key sequences."
|
||
(exwm--log)
|
||
(make-local-variable 'exwm-input--simulation-keys)
|
||
(use-local-map (copy-keymap exwm-mode-map))
|
||
(let ((exwm-input--local-simulation-keys t))
|
||
(exwm-input--set-simulation-keys simulation-keys)))
|
||
|
||
;;;###autoload
|
||
(cl-defun exwm-input-send-simulation-key (times)
|
||
"Fake a key event according to the last input key sequence."
|
||
(interactive "p")
|
||
(exwm--log)
|
||
(unless (derived-mode-p 'exwm-mode)
|
||
(cl-return-from exwm-input-send-simulation-key))
|
||
(let ((keys (gethash (this-single-command-keys)
|
||
exwm-input--simulation-keys)))
|
||
(dotimes (_ times)
|
||
(dolist (key keys)
|
||
(exwm-input--fake-key key)))))
|
||
|
||
(defun exwm-input--on-pre-command ()
|
||
"Run in `pre-command-hook'."
|
||
(unless (eq this-command #'exit-minibuffer)
|
||
(setq exwm-input--during-command t)))
|
||
|
||
(defun exwm-input--on-post-command ()
|
||
"Run in `post-command-hook'."
|
||
(setq exwm-input--during-command nil))
|
||
|
||
(defun exwm-input--init ()
|
||
"Initialize the keyboard module."
|
||
(exwm--log)
|
||
;; Refresh keyboard mapping
|
||
(xcb:keysyms:init exwm--connection #'exwm-input--on-keysyms-update)
|
||
;; Create the X window and intern the atom used to fetch timestamp.
|
||
(setq exwm-input--timestamp-window (xcb:generate-id exwm--connection))
|
||
(xcb:+request exwm--connection
|
||
(make-instance 'xcb:CreateWindow
|
||
:depth 0
|
||
:wid exwm-input--timestamp-window
|
||
:parent exwm--root
|
||
:x -1
|
||
:y -1
|
||
:width 1
|
||
:height 1
|
||
:border-width 0
|
||
:class xcb:WindowClass:CopyFromParent
|
||
:visual 0
|
||
:value-mask xcb:CW:EventMask
|
||
:event-mask xcb:EventMask:PropertyChange))
|
||
(xcb:+request exwm--connection
|
||
(make-instance 'xcb:ewmh:set-_NET_WM_NAME
|
||
:window exwm-input--timestamp-window
|
||
:data "EXWM: exwm-input--timestamp-window"))
|
||
(setq exwm-input--timestamp-atom (exwm--intern-atom "_TIME"))
|
||
;; Initialize global keys.
|
||
(dolist (i exwm-input-global-keys)
|
||
(exwm-input--set-key (car i) (cdr i)))
|
||
;; Initialize simulation keys.
|
||
(when exwm-input-simulation-keys
|
||
(exwm-input--set-simulation-keys exwm-input-simulation-keys))
|
||
;; Attach event listeners
|
||
(xcb:+event exwm--connection 'xcb:PropertyNotify
|
||
#'exwm-input--on-PropertyNotify)
|
||
(xcb:+event exwm--connection 'xcb:CreateNotify #'exwm-input--on-CreateNotify)
|
||
(xcb:+event exwm--connection 'xcb:KeyPress #'exwm-input--on-KeyPress)
|
||
(xcb:+event exwm--connection 'xcb:ButtonPress #'exwm-input--on-ButtonPress)
|
||
(xcb:+event exwm--connection 'xcb:ButtonRelease
|
||
#'exwm-floating--stop-moveresize)
|
||
(xcb:+event exwm--connection 'xcb:MotionNotify
|
||
#'exwm-floating--do-moveresize)
|
||
(when mouse-autoselect-window
|
||
(xcb:+event exwm--connection 'xcb:EnterNotify
|
||
#'exwm-input--on-EnterNotify))
|
||
;; Control `exwm-input--during-command'
|
||
(add-hook 'pre-command-hook #'exwm-input--on-pre-command)
|
||
(add-hook 'post-command-hook #'exwm-input--on-post-command)
|
||
;; Update focus when buffer list updates
|
||
(add-hook 'buffer-list-update-hook #'exwm-input--on-buffer-list-update))
|
||
|
||
(defun exwm-input--post-init ()
|
||
"The second stage in the initialization of the input module."
|
||
(exwm--log)
|
||
(exwm-input--update-global-prefix-keys))
|
||
|
||
(defun exwm-input--exit ()
|
||
"Exit the input module."
|
||
(exwm--log)
|
||
(exwm-input--unset-simulation-keys)
|
||
(remove-hook 'pre-command-hook #'exwm-input--on-pre-command)
|
||
(remove-hook 'post-command-hook #'exwm-input--on-post-command)
|
||
(remove-hook 'buffer-list-update-hook #'exwm-input--on-buffer-list-update)
|
||
(when exwm-input--update-focus-defer-timer
|
||
(cancel-timer exwm-input--update-focus-defer-timer))
|
||
(when exwm-input--update-focus-timer
|
||
(cancel-timer exwm-input--update-focus-timer)))
|
||
|
||
|
||
|
||
(provide 'exwm-input)
|
||
|
||
;;; exwm-input.el ends here
|