diff options
Diffstat (limited to 'third_party/exwm/exwm-input.el')
| -rw-r--r-- | third_party/exwm/exwm-input.el | 245 |
1 files changed, 125 insertions, 120 deletions
diff --git a/third_party/exwm/exwm-input.el b/third_party/exwm/exwm-input.el index 50676217f1..f1f035c91a 100644 --- a/third_party/exwm/exwm-input.el +++ b/third_party/exwm/exwm-input.el @@ -1,6 +1,6 @@ ;;; exwm-input.el --- Input Module for EXWM -*- lexical-binding: t -*- -;; Copyright (C) 2015-2021 Free Software Foundation, Inc. +;; Copyright (C) 2015-2024 Free Software Foundation, Inc. ;; Author: Chris Feng <chris.w.feng@gmail.com> @@ -40,14 +40,13 @@ (defgroup exwm-input nil "Input." - :version "25.3" :group 'exwm) (defcustom exwm-input-prefix-keys '(?\C-x ?\C-u ?\C-h ?\M-x ?\M-` ?\M-& ?\M-:) - "List of prefix keys EXWM should forward to Emacs when in line-mode. + "List of prefix keys EXWM should forward to Emacs when in `line-mode'. -The point is to make keys like 'C-x C-f' forwarded to Emacs in line-mode. +The point is to make keys like 'C-x C-f' forwarded to Emacs in `line-mode'. There is no need to add prefix keys for global/simulation keys or those defined in `exwm-mode-map' here." :type '(repeat key-sequence) @@ -87,7 +86,7 @@ defined in `exwm-mode-map' here." value)))) (defcustom exwm-input-line-mode-passthrough nil - "Non-nil makes 'line-mode' forward all events to Emacs." + "Non-nil makes `line-mode' forward all events to Emacs." :type 'boolean) ;; Input focus update requests should be accumulated for a short time @@ -102,6 +101,13 @@ defined in `exwm-mode-map' here." (defconst exwm-input--update-focus-interval 0.01 "Time interval (in seconds) for accumulating input focus update requests.") +(defconst exwm-input--passthrough-functions '(read-char + read-char-exclusive + read-key-sequence-vector + read-key-sequence + read-event) + "Low-level read functions that must be exempted from EXWM input handling.") + (defvar exwm-input--during-command nil "Indicate whether between `pre-command-hook' and `post-command-hook'.") @@ -115,10 +121,13 @@ defined in `exwm-mode-map' here." (defvar exwm-input--local-simulation-keys nil "Whether simulation keys are local.") -(defvar exwm-input--simulation-keys nil "Simulation keys in line-mode.") +(defvar exwm-input--simulation-keys nil "Simulation keys in `line-mode'.") + +(defvar exwm-input--skip-buffer-list-update nil + "Skip the upcoming `buffer-list-update'.") (defvar exwm-input--temp-line-mode nil - "Non-nil indicates it's in temporary line-mode for char-mode.") + "Non-nil indicates it's in temporary line-mode for `char-mode'.") (defvar exwm-input--timestamp-atom nil) @@ -126,25 +135,15 @@ defined in `exwm-mode-map' here." (defvar exwm-input--timestamp-window nil) -(defvar exwm-input--update-focus-defer-timer nil "Timer for polling the lock.") +(defvar exwm-input--update-focus-timer nil + "Timer for deferring the update of input focus.") (defvar exwm-input--update-focus-lock nil "Lock for solving input focus update contention.") -(defvar exwm-input--update-focus-timer nil - "Timer for deferring the update of input focus.") - (defvar exwm-input--update-focus-window nil "The (Emacs) window to be focused. -It also helps us discern whether a `buffer-list-update-hook' was caused by a -different window having been selected. - This value should always be overwritten.") -(defvar exwm-input--update-focus-window-buffer nil - "Buffer displayed in `exwm-input--update-focus-window'. -Helps us discern whether a `buffer-list-update-hook' was caused by the selected -window switching to a different buffer.") - (defvar exwm-input--echo-area-timer nil "Timer for detecting echo area dirty.") (defvar exwm-input--event-hook nil @@ -164,8 +163,6 @@ Current buffer will be the `exwm-mode' buffer when this hook runs.") (declare-function exwm-layout--iconic-state-p "exwm-layout.el" (&optional id)) (declare-function exwm-layout--show "exwm-layout.el" (id &optional window)) (declare-function exwm-reset "exwm.el" ()) -(declare-function exwm-workspace--client-p "exwm-workspace.el" - (&optional frame)) (declare-function exwm-workspace--minibuffer-own-frame-p "exwm-workspace.el") (declare-function exwm-workspace--workspace-p "exwm-workspace.el" (workspace)) (declare-function exwm-workspace-switch "exwm-workspace.el" @@ -301,51 +298,39 @@ ARGS are additional arguments to CALLBACK." (defun exwm-input--on-buffer-list-update () "Run in `buffer-list-update-hook' to track input focus." - ;; `buffer-list-update-hook' is invoked by several functions - ;; (`get-buffer-create', `select-window', `with-temp-buffer', etc.), but we - ;; just want to notice when a different window has been selected, or when the - ;; selected window displays a different buffer, so that we can set the focus - ;; to the associated X window (in case of an `exwm-mode' buffer). In order to - ;; differentiate, we keep track of the last selected window and buffer in the - ;; `exwm-input--update-focus-window' and - ;; `exwm-input--update-focus-window-buffer' variables. - (let* ((win (selected-window)) - (buf (window-buffer win))) - (when (and (not (exwm-workspace--client-p)) - (not (and (eq exwm-input--update-focus-window win) - (eq exwm-input--update-focus-window-buffer buf)))) - (exwm--log "selected-window=%S current-buffer=%S" win buf) - (setq exwm-input--update-focus-window win) - (setq exwm-input--update-focus-window-buffer buf) - (redirect-frame-focus (selected-frame) nil) - (exwm-input--update-focus-defer)))) + (when (and ; this hook is called incesantly; place cheap tests on top + (not exwm-input--skip-buffer-list-update) + (exwm--terminal-p) ; skip other terminals, e.g. TTY client frames + (not (frame-parameter nil 'no-accept-focus))) + (exwm--log "current-buffer=%S selected-window=%S" + (current-buffer) (selected-window)) + (redirect-frame-focus (selected-frame) nil) + (setq exwm-input--update-focus-window (selected-window)) + (exwm-input--update-focus-defer))) (defun exwm-input--update-focus-defer () - "Defer updating input focus." - (when exwm-input--update-focus-defer-timer - (cancel-timer exwm-input--update-focus-defer-timer)) + "Schedule a deferred update to input focus. +Instead of immediately focusing the current window, it defers the focus change +until the selected window stops changing (debouncing input focus updates)." + (when exwm-input--update-focus-timer + (cancel-timer exwm-input--update-focus-timer)) + (setq exwm-input--update-focus-timer + ;; Attempt to accumulate successive events close enough. + (run-with-timer exwm-input--update-focus-interval + nil + #'exwm-input--update-focus-commit))) + +(defun exwm-input--update-focus-commit () + "Attempt to update the window focus. +If we're currently updating the window focus, re-schedule a focus update +attempt later." (if exwm-input--update-focus-lock - (setq exwm-input--update-focus-defer-timer - (exwm--defer 0 #'exwm-input--update-focus-defer)) - (setq exwm-input--update-focus-defer-timer nil) - (when exwm-input--update-focus-timer - (cancel-timer exwm-input--update-focus-timer)) - (setq exwm-input--update-focus-timer - ;; Attempt to accumulate successive events close enough. - (run-with-timer exwm-input--update-focus-interval - nil - #'exwm-input--update-focus-commit - exwm-input--update-focus-window)))) - -(defun exwm-input--update-focus-commit (window) - "Commit updating input focus." - (setq exwm-input--update-focus-lock t) - (unwind-protect - (exwm-input--update-focus window) - (setq exwm-input--update-focus-lock nil))) + (exwm-input--update-focus-defer) + (let ((exwm-input--update-focus-lock t)) + (exwm-input--update-focus exwm-input--update-focus-window)))) (defun exwm-input--update-focus (window) - "Update input focus." + "Update input focus to WINDOW." (when (window-live-p window) (exwm--log "focus-window=%s focus-buffer=%s" window (window-buffer window)) (with-current-buffer (window-buffer window) @@ -469,9 +454,12 @@ ARGS are additional arguments to CALLBACK." (t ;; Replay this event by default. (setq fake-last-command t) - (setq mode xcb:Allow:ReplayPointer)))) - (when fake-last-command - (exwm-input--fake-last-command)) + (setq mode xcb:Allow:ReplayPointer))) + (when fake-last-command + (if buffer + (with-current-buffer buffer + (exwm-input--fake-last-command)) + (exwm-input--fake-last-command)))) (xcb:+request exwm--connection (make-instance 'xcb:AllowEvents :mode mode :time xcb:Time:CurrentTime)) (xcb:flush exwm--connection)) @@ -594,18 +582,10 @@ instead." (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))))))) +(defsubst exwm-input--unread-event (event) + (declare (indent defun)) + (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'." @@ -680,8 +660,26 @@ Current buffer must be an `exwm-mode' buffer." (defun exwm-input--fake-last-command () "Fool some packages into thinking there is a change in the buffer." (setq last-command #'exwm-input--noop) - (run-hooks 'pre-command-hook) - (run-hooks 'post-command-hook)) + ;; The Emacs manual says: + ;; > Quitting is suppressed while running pre-command-hook and + ;; > post-command-hook. If an error happens while executing one of these + ;; > hooks, it does not terminate execution of the hook; instead the error is + ;; > silenced and the function in which the error occurred is removed from the + ;; > hook. + ;; We supress errors but neither continue execution nor we remove from the + ;; hook. + (condition-case err + (run-hooks 'pre-command-hook) + ((error) + (exwm--log "Error occurred while running pre-command-hook: %s" + (error-message-string err)) + (xcb-debug:backtrace))) + (condition-case err + (run-hooks 'post-command-hook) + ((error) + (exwm--log "Error occurred while running post-command-hook: %s" + (error-message-string err)) + (xcb-debug:backtrace)))) (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." @@ -725,7 +723,7 @@ Current buffer must be an `exwm-mode' buffer." (xcb:flush exwm--connection)))) (defun exwm-input--on-KeyPress-char-mode (key-press &optional _raw-data) - "Handle KeyPress event in char-mode." + "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) @@ -748,7 +746,7 @@ Current buffer must be an `exwm-mode' buffer." (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. +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." @@ -766,7 +764,7 @@ button event." xcb:Allow:ReplayPointer)))) (defun exwm-input--on-ButtonPress-char-mode () - "Handle button events in char-mode. + "Handle button events in `char-mode'. The return value is used as event_mode to release the original button event." (exwm--log) @@ -842,7 +840,7 @@ button event." ;;;###autoload (defun exwm-input-grab-keyboard (&optional id) - "Switch to line-mode." + "Switch to `line-mode'." (interactive (list (when (derived-mode-p 'exwm-mode) (exwm--buffer->id (window-buffer))))) (when id @@ -853,7 +851,7 @@ button event." ;;;###autoload (defun exwm-input-release-keyboard (&optional id) - "Switch to char-mode." + "Switch to `char-mode`." (interactive (list (when (derived-mode-p 'exwm-mode) (exwm--buffer->id (window-buffer))))) (when id @@ -864,7 +862,7 @@ button event." ;;;###autoload (defun exwm-input-toggle-keyboard (&optional id) - "Toggle between 'line-mode' and 'char-mode'." + "Toggle between `line-mode' and `char-mode'." (interactive (list (when (derived-mode-p 'exwm-mode) (exwm--buffer->id (window-buffer))))) (when id @@ -971,17 +969,12 @@ multiple keys. If END-KEY is non-nil, stop sending keys if it's pressed." #'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 +type to an X window in `line-mode' which then gets translated to simulated-key by EXWM and forwarded to the X window. Notes: @@ -1092,7 +1085,7 @@ where both ORIGINAL-KEY and SIMULATED-KEY are key sequences." (defmacro exwm-input-invoke-factory (keys) "Make a command that invokes KEYS when called. -One use is to access the keymap bound to KEYS (as prefix keys) in char-mode." +One use is to access the keymap bound to KEYS (as prefix keys) in `char-mode'." (let* ((keys (kbd keys)) (description (key-description keys))) `(defun ,(intern (concat "exwm-input--invoke--" description)) () @@ -1116,39 +1109,47 @@ One use is to access the keymap bound to KEYS (as prefix keys) in char-mode." (defun exwm-input--on-minibuffer-setup () "Run in `minibuffer-setup-hook' to grab keyboard if necessary." - (exwm--log) - (with-current-buffer - (window-buffer (frame-selected-window exwm-workspace--current)) - (when (and (derived-mode-p 'exwm-mode) - (not (exwm-workspace--client-p)) - (eq exwm--selected-input-mode 'char-mode)) - (exwm-input--grab-keyboard exwm--id)))) + (let* ((window (or (minibuffer-selected-window) ; minibuffer-setup-hook + (selected-window))) ; echo-area-clear-hook + (frame (window-frame window))) + (when (exwm--terminal-p frame) + (with-current-buffer (window-buffer window) + (when (and (derived-mode-p 'exwm-mode) + (eq exwm--selected-input-mode 'char-mode)) + (exwm--log "Grab #x%x window=%s frame=%s" exwm--id window frame) + (exwm-input--grab-keyboard exwm--id)))))) (defun exwm-input--on-minibuffer-exit () "Run in `minibuffer-exit-hook' to release keyboard if necessary." - (exwm--log) - (with-current-buffer - (window-buffer (frame-selected-window exwm-workspace--current)) - (when (and (derived-mode-p 'exwm-mode) - (not (exwm-workspace--client-p)) - (eq exwm--selected-input-mode 'char-mode) - (eq exwm--input-mode 'line-mode)) - (exwm-input--release-keyboard exwm--id)))) + (let* ((window (or (minibuffer-selected-window) ; minibuffer-setup-hook + (selected-window))) ; echo-area-clear-hook + (frame (window-frame window))) + (when (exwm--terminal-p frame) + (with-current-buffer (window-buffer window) + (when (and (derived-mode-p 'exwm-mode) + (eq exwm--selected-input-mode 'char-mode) + (eq exwm--input-mode 'line-mode)) + (exwm--log "Release #x%x window=%s frame=%s" exwm--id window frame) + (exwm-input--release-keyboard exwm--id)))))) (defun exwm-input--on-echo-area-dirty () "Run when new message arrives to grab keyboard if necessary." - (exwm--log) - (when (and (not (active-minibuffer-window)) - (not (exwm-workspace--client-p)) - cursor-in-echo-area) + (when (and cursor-in-echo-area + (not (active-minibuffer-window))) + (exwm--log) (exwm-input--on-minibuffer-setup))) (defun exwm-input--on-echo-area-clear () "Run in `echo-area-clear-hook' to release keyboard if necessary." - (exwm--log) (unless (current-message) + (exwm--log) (exwm-input--on-minibuffer-exit))) +(defun exwm-input--call-with-passthrough (function &rest args) + "Bind `exwm-input-line-mode-passthrough' and call FUNCTION with ARGS." + (let ((exwm-input-line-mode-passthrough t)) + (apply function args))) + (defun exwm-input--init () "Initialize the keyboard module." (exwm--log) @@ -1204,7 +1205,10 @@ One use is to access the keymap bound to KEYS (as prefix keys) in char-mode." (run-with-idle-timer 0 t #'exwm-input--on-echo-area-dirty)) (add-hook 'echo-area-clear-hook #'exwm-input--on-echo-area-clear) ;; Update focus when buffer list updates - (add-hook 'buffer-list-update-hook #'exwm-input--on-buffer-list-update)) + (add-hook 'buffer-list-update-hook #'exwm-input--on-buffer-list-update) + + (dolist (fun exwm-input--passthrough-functions) + (advice-add fun :around #'exwm-input--call-with-passthrough))) (defun exwm-input--post-init () "The second stage in the initialization of the input module." @@ -1214,6 +1218,8 @@ One use is to access the keymap bound to KEYS (as prefix keys) in char-mode." (defun exwm-input--exit () "Exit the input module." (exwm--log) + (dolist (fun exwm-input--passthrough-functions) + (advice-remove fun #'exwm-input--call-with-passthrough)) (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) @@ -1224,17 +1230,16 @@ One use is to access the keymap bound to KEYS (as prefix keys) in char-mode." (setq exwm-input--echo-area-timer nil)) (remove-hook 'echo-area-clear-hook #'exwm-input--on-echo-area-clear) (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)) ;; Make input focus working even without a WM. - (xcb:+request exwm--connection - (make-instance 'xcb:SetInputFocus - :revert-to xcb:InputFocus:PointerRoot - :focus exwm--root - :time xcb:Time:CurrentTime)) - (xcb:flush exwm--connection)) + (when (slot-value exwm--connection 'connected) + (xcb:+request exwm--connection + (make-instance 'xcb:SetInputFocus + :revert-to xcb:InputFocus:PointerRoot + :focus exwm--root + :time xcb:Time:CurrentTime)) + (xcb:flush exwm--connection))) |