776 lines
34 KiB
EmacsLisp
776 lines
34 KiB
EmacsLisp
;;; exwm-input.el --- Input Module for EXWM -*- lexical-binding: t -*-
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;; Copyright (C) 2015-2018 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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(defvar exwm-input-move-event 's-down-mouse-1
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"Emacs event to start moving a window.")
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(defvar exwm-input-resize-event 's-down-mouse-3
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"Emacs event to start resizing a window.")
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(defvar exwm-input--timestamp-window nil)
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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-workspace--current)
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(defvar exwm-workspace--switch-history-outdated)
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(defvar exwm-workspace-current-index)
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(defvar exwm-workspace--minibuffer)
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(defvar exwm-workspace--list)
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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-prefix-keys
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'(?\C-c ?\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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(defvar exwm-input--simulation-keys nil "Simulation keys in line-mode.")
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(defvar exwm-input--simulation-prefix-keys nil
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"List of prefix keys of simulation keys in line-mode.")
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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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(with-current-buffer (exwm--id->buffer id)
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(cond
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((and (not exwm--hints-input)
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(memq xcb:Atom:WM_TAKE_FOCUS exwm--protocols))
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(when (= (frame-parameter nil 'exwm-id)
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(slot-value (xcb:+request-unchecked+reply exwm--connection
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(make-instance 'xcb:GetInputFocus))
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'focus))
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(exwm--log "Focus on #x%x with WM_TAKE_FOCUS" id)
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(exwm-input--update-timestamp
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(lambda (timestamp id)
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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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(t
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(exwm--log "Focus on #x%x with SetInputFocus" id)
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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 xcb:Time:CurrentTime))
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(exwm-input--set-active-window id)
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(xcb:flush exwm--connection))))))
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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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(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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(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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(defun exwm-input--on-FocusIn (data _synthetic)
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"Handle FocusIn events."
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(let ((obj (make-instance 'xcb:FocusIn)))
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(xcb:unmarshal obj data)
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(with-slots (mode) obj
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;; Revert input focus back to Emacs frame / X window when it's set on
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;; the root window or some workspace container.
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(when (eq mode xcb:NotifyMode:Normal)
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(x-focus-frame (selected-frame))
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(select-window (selected-window))))))
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(defun exwm-input--on-keysyms-update ()
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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-workspace-list-change ()
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"Run in `exwm-input--update-global-prefix-keys'."
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(dolist (f exwm-workspace--list)
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;; Reuse the 'exwm-grabbed' frame parameter set in
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;; `exwm-input--update-global-prefix-keys'.
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(unless (frame-parameter f 'exwm-grabbed)
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(xcb:+request exwm--connection
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(make-instance 'xcb:ChangeWindowAttributes
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:window (frame-parameter f 'exwm-workspace)
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:value-mask xcb:CW:EventMask
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:event-mask xcb:EventMask:FocusChange))))
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(exwm-input--update-global-prefix-keys)
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(xcb:flush exwm--connection))
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(declare-function exwm-workspace--client-p "exwm-workspace.el"
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(&optional frame))
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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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(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-workspace--client-p))
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;; The following conditions filter out events relating to temp
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;; buffers.
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(eq (current-buffer) (window-buffer))
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(not (string-prefix-p " *temp*"
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(buffer-name (car (last (buffer-list)))))))
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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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;; 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--update-focus-lock nil
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"Lock for solving input focus update contention.")
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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-timer nil
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"Timer for deferring the update of input focus.")
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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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(declare-function exwm-layout--iconic-state-p "exwm-layout.el" (&optional id))
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(declare-function exwm-layout--set-state "exwm-layout.el" (id state))
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(declare-function exwm-workspace--minibuffer-own-frame-p "exwm-workspace.el")
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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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(declare-function exwm-workspace--workspace-p "exwm-workspace.el" (workspace))
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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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(with-current-buffer (window-buffer window)
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(if (eq major-mode '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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(exwm-input--set-focus exwm--id)
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(when exwm--floating-frame
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;; Adjust stacking orders of the floating container.
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(xcb:+request exwm--connection
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(make-instance 'xcb:ConfigureWindow
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:window exwm--container
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:value-mask xcb:ConfigWindow:StackMode
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:stack-mode xcb:StackMode:Above))
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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--set-state exwm--id
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xcb:icccm:WM_STATE:NormalState))
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(xcb:flush exwm--connection)))
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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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(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-selected-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--on-minibuffer-setup ()
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"Run in `minibuffer-setup-hook' to set input focus."
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(unless (exwm-workspace--client-p)
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;; Set input focus on the Emacs frame
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(x-focus-frame (window-frame (minibuffer-selected-window)))))
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(defun exwm-input--set-active-window (&optional id)
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"Set _NET_ACTIVE_WINDOW."
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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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(declare-function exwm-floating--start-moveresize "exwm-floating.el"
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(id &optional type))
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(declare-function exwm-workspace--position "exwm-workspace.el" (frame))
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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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(with-slots (detail time 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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window (get-buffer-window (exwm--id->buffer event) t)
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buffer (window-buffer window))
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(cond ((and (eq button-event exwm-input-move-event)
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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 (eq major-mode '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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(with-current-buffer buffer
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(or (not (eq major-mode '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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(t
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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 (eq major-mode '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
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(if (window-live-p window)
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(select-window window)
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(setq window
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(get-buffer-window (exwm--id->buffer event) t))
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(when window (select-window window))))
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;; The event should be replayed
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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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(defun exwm-input--on-KeyPress (data _synthetic)
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"Handle KeyPress event."
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(let ((obj (make-instance 'xcb:KeyPress)))
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(xcb:unmarshal obj data)
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(if (eq major-mode 'exwm-mode)
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(funcall exwm--on-KeyPress obj data)
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(exwm-input--on-KeyPress-char-mode obj))))
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(defun exwm-input--update-global-prefix-keys ()
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"Update `exwm-input--global-prefix-keys'."
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(when exwm--connection
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(let ((original exwm-input--global-prefix-keys)
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keysym keycode ungrab-key grab-key workspace)
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(setq exwm-input--global-prefix-keys nil)
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(dolist (i exwm-input--global-keys)
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(cl-pushnew (elt i 0) exwm-input--global-prefix-keys))
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;; Stop here if the global prefix keys are update-to-date and
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;; there's no new workspace.
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(unless (and (equal original exwm-input--global-prefix-keys)
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(cl-every (lambda (w) (frame-parameter w 'exwm-grabbed))
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exwm-workspace--list))
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(setq ungrab-key (make-instance 'xcb:UngrabKey
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:key xcb:Grab:Any :grab-window nil
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:modifiers xcb:ModMask:Any)
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grab-key (make-instance 'xcb:GrabKey
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:owner-events 0
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:grab-window nil
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:modifiers nil
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:key nil
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:pointer-mode xcb:GrabMode:Async
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:keyboard-mode xcb:GrabMode:Async))
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(dolist (w exwm-workspace--list)
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(setq workspace (frame-parameter w 'exwm-workspace))
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(setf (slot-value ungrab-key 'grab-window) workspace)
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(if (xcb:+request-checked+request-check exwm--connection ungrab-key)
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(exwm--log "Failed to ungrab keys")
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;; Label this frame.
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(set-frame-parameter w 'exwm-grabbed t)
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(dolist (k exwm-input--global-prefix-keys)
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(setq keysym (xcb:keysyms:event->keysym exwm--connection k)
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keycode (xcb:keysyms:keysym->keycode exwm--connection
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(car keysym)))
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(setf (slot-value grab-key 'grab-window) workspace
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(slot-value grab-key 'modifiers) (cdr keysym)
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(slot-value grab-key 'key) keycode)
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(when (or (= 0 keycode)
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(xcb:+request-checked+request-check exwm--connection
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grab-key)
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;; Also grab this key with num-lock mask set.
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(when (/= 0 xcb:keysyms:num-lock-mask)
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(setf (slot-value grab-key 'modifiers)
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(logior (cdr keysym)
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xcb:keysyms:num-lock-mask))
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(xcb:+request-checked+request-check exwm--connection
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grab-key)))
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(user-error "[EXWM] Failed to grab key: %s"
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(single-key-description k))))))))))
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(defun exwm-input-set-key (key command)
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"Set a global key binding."
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(interactive "KSet key globally: \nCSet key %s to command: ")
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(global-set-key key command)
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(cl-pushnew key exwm-input--global-keys)
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(when (called-interactively-p 'any)
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(exwm-input--update-global-prefix-keys)))
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;; Putting (t . EVENT) into `unread-command-events' does not really work
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;; as documented for Emacs < 27.
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(eval-and-compile
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(if (< emacs-major-version 27)
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(defsubst exwm-input--unread-event (event)
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(setq unread-command-events
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(append unread-command-events (list event))))
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(defsubst exwm-input--unread-event (event)
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(setq unread-command-events
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(append unread-command-events `((t . ,event)))))))
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(defvar exwm-input-command-whitelist nil
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"A list of commands that when active all keys should be forwarded to Emacs.")
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(make-obsolete-variable 'exwm-input-command-whitelist
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"This variable can be safely removed." "25.1")
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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-line-mode-passthrough nil
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"Non-nil makes 'line-mode' forwards all events to Emacs.")
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(defvar exwm-input--line-mode-cache nil "Cache for incomplete key sequence.")
|
||
|
||
(defvar exwm-input--temp-line-mode nil
|
||
"Non-nil indicates it's in temporary line-mode for char-mode.")
|
||
|
||
(defun exwm-input--cache-event (event)
|
||
"Cache EVENT."
|
||
(setq exwm-input--line-mode-cache
|
||
(vconcat exwm-input--line-mode-cache (vector event)))
|
||
;; When the key sequence is complete.
|
||
(unless (keymapp (key-binding exwm-input--line-mode-cache))
|
||
(setq exwm-input--line-mode-cache nil)
|
||
(when exwm-input--temp-line-mode
|
||
(setq exwm-input--temp-line-mode nil)
|
||
(exwm-input--release-keyboard)))
|
||
(exwm-input--unread-event event))
|
||
|
||
(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 mode)
|
||
(when (and (/= 0 (car keysym))
|
||
(setq event (xcb:keysyms:keysym->event
|
||
exwm--connection (car keysym)
|
||
(logand state (lognot (cdr keysym)))))
|
||
(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)
|
||
(memq event exwm-input--simulation-prefix-keys)))
|
||
(setq mode xcb:Allow:AsyncKeyboard)
|
||
(exwm-input--cache-event 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)
|
||
(when (and (/= 0 (car keysym))
|
||
(setq event (xcb:keysyms:keysym->event
|
||
exwm--connection (car keysym)
|
||
(logand state (lognot (cdr keysym))))))
|
||
(if (not (eq major-mode 'exwm-mode))
|
||
(exwm-input--unread-event event)
|
||
;; Grab keyboard temporarily.
|
||
(setq exwm-input--temp-line-mode t)
|
||
(exwm-input--grab-keyboard)
|
||
(exwm-input--cache-event event)))))
|
||
(xcb:+request exwm--connection
|
||
(make-instance 'xcb:AllowEvents
|
||
:mode xcb:Allow:AsyncKeyboard
|
||
:time xcb:Time:CurrentTime))
|
||
(xcb:flush exwm--connection))
|
||
|
||
(defun exwm-input--update-mode-line (id)
|
||
"Update the propertized `mode-line-process' for window ID."
|
||
(let (help-echo cmd mode)
|
||
(cl-case exwm--on-KeyPress
|
||
((exwm-input--on-KeyPress-line-mode)
|
||
(setq mode "line"
|
||
help-echo "mouse-1: Switch to char-mode"
|
||
cmd `(lambda ()
|
||
(interactive)
|
||
(exwm-input-release-keyboard ,id))))
|
||
((exwm-input--on-KeyPress-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)))))))))
|
||
|
||
(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
|
||
(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--on-KeyPress #'exwm-input--on-KeyPress-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
|
||
(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))
|
||
(with-current-buffer (exwm--id->buffer id)
|
||
(setq exwm--on-KeyPress #'exwm-input--on-KeyPress-char-mode))))
|
||
|
||
;;;###autoload
|
||
(defun exwm-input-grab-keyboard (&optional id)
|
||
"Switch to line-mode."
|
||
(interactive (list (exwm--buffer->id (window-buffer))))
|
||
(when id
|
||
(with-current-buffer (exwm--id->buffer id)
|
||
(exwm-input--grab-keyboard id)
|
||
(setq exwm--keyboard-grabbed t)
|
||
(exwm-input--update-mode-line id)
|
||
(force-mode-line-update))))
|
||
|
||
;;;###autoload
|
||
(defun exwm-input-release-keyboard (&optional id)
|
||
"Switch to char-mode."
|
||
(interactive (list (exwm--buffer->id (window-buffer))))
|
||
(when id
|
||
(with-current-buffer (exwm--id->buffer id)
|
||
(exwm-input--release-keyboard id)
|
||
(setq exwm--keyboard-grabbed nil)
|
||
(exwm-input--update-mode-line id)
|
||
(force-mode-line-update))))
|
||
|
||
;;;###autoload
|
||
(defun exwm-input-toggle-keyboard (&optional id)
|
||
"Toggle between 'line-mode' and 'char-mode'."
|
||
(interactive (list (exwm--buffer->id (window-buffer))))
|
||
(when id
|
||
(with-current-buffer (exwm--id->buffer id)
|
||
(if exwm--keyboard-grabbed
|
||
(exwm-input-release-keyboard id)
|
||
(exwm-reset)))))
|
||
|
||
(defun exwm-input--fake-key (event)
|
||
"Fake a key event equivalent to Emacs event EVENT."
|
||
(let* ((keysym (xcb:keysyms:event->keysym exwm--connection event))
|
||
keycode id)
|
||
(when (= 0 (car keysym))
|
||
(user-error "[EXWM] Invalid key: %s" (single-key-description event)))
|
||
(setq keycode (xcb:keysyms:keysym->keycode exwm--connection
|
||
(car keysym)))
|
||
(when (/= 0 keycode)
|
||
(setq id (exwm--buffer->id (window-buffer (selected-window))))
|
||
(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 (cdr keysym)
|
||
:same-screen 1)
|
||
exwm--connection)))))
|
||
(xcb:flush exwm--connection)))
|
||
|
||
;;;###autoload
|
||
(defun exwm-input-send-next-key (times)
|
||
"Send next key to client window."
|
||
(interactive "p")
|
||
(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)"
|
||
(key-description keys)
|
||
(1+ i) times)))
|
||
(unless (listp key) (throw 'break nil)))))
|
||
(setq keys (vconcat keys (vector key)))
|
||
(exwm-input--fake-key key))))
|
||
|
||
;; (defun exwm-input-send-last-key ()
|
||
;; (interactive)
|
||
;; (unless (listp last-input-event) ;not a key event
|
||
;; (exwm-input--fake-key last-input-event)))
|
||
|
||
(defvar exwm-input--local-simulation-keys nil
|
||
"Whether simulation keys are local.")
|
||
|
||
(defun exwm-input--update-simulation-prefix-keys ()
|
||
"Update the list of prefix keys of simulation keys."
|
||
(setq exwm-input--simulation-prefix-keys nil)
|
||
(dolist (i exwm-input--simulation-keys)
|
||
(if exwm-input--local-simulation-keys
|
||
(local-set-key (car i) #'exwm-input-send-simulation-key)
|
||
(define-key exwm-mode-map (car i) #'exwm-input-send-simulation-key))
|
||
(cl-pushnew (elt (car i) 0) exwm-input--simulation-prefix-keys)))
|
||
|
||
(defun exwm-input-set-simulation-keys (simulation-keys)
|
||
"Set simulation keys.
|
||
|
||
SIMULATION-KEYS is an alist of the form (original-key . simulated-key)."
|
||
(setq exwm-input--simulation-keys nil)
|
||
(dolist (i simulation-keys)
|
||
(cl-pushnew `(,(vconcat (car i)) . ,(cdr i)) exwm-input--simulation-keys))
|
||
(exwm-input--update-simulation-prefix-keys))
|
||
|
||
(defun exwm-input-set-local-simulation-keys (simulation-keys)
|
||
"Set buffer-local simulation keys.
|
||
|
||
Its usage is the same with `exwm-input-set-simulation-keys'."
|
||
(make-local-variable 'exwm-input--simulation-keys)
|
||
(make-local-variable 'exwm-input--simulation-prefix-keys)
|
||
(use-local-map (copy-keymap exwm-mode-map))
|
||
(let ((exwm-input--local-simulation-keys t))
|
||
(exwm-input-set-simulation-keys simulation-keys)))
|
||
|
||
;;;###autoload
|
||
(defun exwm-input-send-simulation-key (times)
|
||
"Fake a key event according to last input key sequence."
|
||
(interactive "p")
|
||
(let ((pair (assoc (this-single-command-keys) exwm-input--simulation-keys)))
|
||
(when pair
|
||
(setq pair (cdr pair))
|
||
(unless (listp pair)
|
||
(setq pair (list pair)))
|
||
(dotimes (_ times)
|
||
(dolist (j pair)
|
||
(exwm-input--fake-key j))))))
|
||
|
||
(defun exwm-input--on-pre-command ()
|
||
"Run in `pre-command-hook'."
|
||
(setq exwm-input--during-command t))
|
||
|
||
(defun exwm-input--on-post-command ()
|
||
"Run in `post-command-hook'."
|
||
(setq exwm-input--during-command nil))
|
||
|
||
(declare-function exwm-floating--stop-moveresize "exwm-floating.el"
|
||
(&rest _args))
|
||
(declare-function exwm-floating--do-moveresize "exwm-floating.el"
|
||
(data _synthetic))
|
||
|
||
(defun exwm-input--init ()
|
||
"Initialize the keyboard module."
|
||
;; 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))
|
||
(let ((atom "_TIME"))
|
||
(setq exwm-input--timestamp-atom
|
||
(slot-value (xcb:+request-unchecked+reply exwm--connection
|
||
(make-instance 'xcb:InternAtom
|
||
:only-if-exists 0
|
||
:name-len (length atom)
|
||
:name atom))
|
||
'atom)))
|
||
;; Attach event listeners
|
||
(xcb:+event exwm--connection 'xcb:PropertyNotify
|
||
#'exwm-input--on-PropertyNotify)
|
||
(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)
|
||
(xcb:+event exwm--connection 'xcb:FocusIn #'exwm-input--on-FocusIn)
|
||
;; The input focus should be set on the frame when minibuffer is active.
|
||
(add-hook 'minibuffer-setup-hook #'exwm-input--on-minibuffer-setup)
|
||
;; 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)
|
||
;; Re-grab global keys.
|
||
(add-hook 'exwm-workspace-list-change-hook
|
||
#'exwm-input--on-workspace-list-change)
|
||
(exwm-input--on-workspace-list-change)
|
||
;; Prevent frame parameters introduced by this module from being
|
||
;; saved/restored.
|
||
(dolist (i '(exwm-grabbed))
|
||
(push (cons i :never) frameset-filter-alist)))
|
||
|
||
(defun exwm-input--exit ()
|
||
"Exit the input module."
|
||
(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)
|
||
(remove-hook 'exwm-workspace-list-change-hook
|
||
#'exwm-input--on-workspace-list-change)
|
||
(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
|