From b4a151918917de2be8b3958d5b59d16c8e3f457e Mon Sep 17 00:00:00 2001 From: Stefan Kangas Date: Sat, 23 May 2020 07:32:10 +0200 Subject: [PATCH] Delete another library obsolete since 23.2 This was missed in a previous commit to remove obsolete libraries. Its deletion was already announced in NEWS. * lisp/obsolete/levents.el: Delete file. This library has been obsolete since 23.2. --- lisp/obsolete/levents.el | 292 --------------------------------------- 1 file changed, 292 deletions(-) delete mode 100644 lisp/obsolete/levents.el diff --git a/lisp/obsolete/levents.el b/lisp/obsolete/levents.el deleted file mode 100644 index 2ae1ca48d16..00000000000 --- a/lisp/obsolete/levents.el +++ /dev/null @@ -1,292 +0,0 @@ -;;; levents.el --- emulate the Lucid event data type and associated functions - -;; Copyright (C) 1993, 2001-2020 Free Software Foundation, Inc. - -;; Maintainer: emacs-devel@gnu.org -;; Keywords: emulations -;; Obsolete-since: 23.2 - -;; This file is part of GNU Emacs. - -;; GNU Emacs is free software: you can redistribute it and/or modify -;; it under the terms of the GNU General Public License as published by -;; the Free Software Foundation, either version 3 of the License, or -;; (at your option) any later version. - -;; GNU Emacs is distributed in the hope that it will be useful, -;; but WITHOUT ANY WARRANTY; without even the implied warranty of -;; MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the -;; GNU General Public License for more details. - -;; You should have received a copy of the GNU General Public License -;; along with GNU Emacs. If not, see . - -;;; Commentary: - -;; Things we cannot emulate in Lisp: -;; It is not possible to emulate current-mouse-event as a variable, -;; though it is not hard to obtain the data from (this-command-keys). - -;; We do not have a variable unread-command-event; -;; instead, we have the more general unread-command-events. - -;; Our read-key-sequence and read-char are not precisely -;; compatible with those in Lucid Emacs, but they should work ok. - -;;; Code: - -(defun next-command-event (event) - (error "You must rewrite to use `read-command-event' instead of `next-command-event'")) - -(defun next-event (event) - (error "You must rewrite to use `read-event' instead of `next-event'")) - -(defun dispatch-event (event) - (error "`dispatch-event' not supported")) - -;; Make events of type eval, menu and timeout -;; execute properly. - -(define-key global-map [menu] 'execute-eval-event) -(define-key global-map [timeout] 'execute-eval-event) -(define-key global-map [eval] 'execute-eval-event) - -(defun execute-eval-event (event) - (interactive "e") - (funcall (nth 1 event) (nth 2 event))) - -(put 'eval 'event-symbol-elements '(eval)) -(put 'menu 'event-symbol-elements '(eval)) -(put 'timeout 'event-symbol-elements '(eval)) - -(defun allocate-event () - "Return an empty event structure. -In this emulation, it returns nil." - nil) - -(defun button-press-event-p (obj) - "True if the argument is a mouse-button-press event object." - (and (consp obj) (symbolp (car obj)) - (memq 'down (get (car obj) 'event-symbol-elements)))) - -(defun button-release-event-p (obj) - "True if the argument is a mouse-button-release event object." - (and (consp obj) (symbolp (car obj)) - (or (memq 'click (get (car obj) 'event-symbol-elements)) - (memq 'drag (get (car obj) 'event-symbol-elements))))) - -(defun button-event-p (obj) - "True if the argument is a mouse-button press or release event object." - (and (consp obj) (symbolp (car obj)) - (or (memq 'click (get (car obj) 'event-symbol-elements)) - (memq 'down (get (car obj) 'event-symbol-elements)) - (memq 'drag (get (car obj) 'event-symbol-elements))))) - -(defun mouse-event-p (obj) - "True if the argument is a mouse-button press or release event object." - (and (consp obj) (symbolp (car obj)) - (or (eq (car obj) 'mouse-movement) - (memq 'click (get (car obj) 'event-symbol-elements)) - (memq 'down (get (car obj) 'event-symbol-elements)) - (memq 'drag (get (car obj) 'event-symbol-elements))))) - -(defun character-to-event (ch &optional event) - "Converts a numeric ASCII value to an event structure, replete with -bucky bits. The character is the first argument, and the event to fill -in is the second. This function contains knowledge about what the codes -mean -- for example, the number 9 is converted to the character Tab, -not the distinct character Control-I. - -Beware that character-to-event and event-to-character are not strictly -inverse functions, since events contain much more information than the -ASCII character set can encode." - ch) - -(defun copy-event (event1 &optional event2) - "Make a copy of the given event object. -In this emulation, `copy-event' just returns its argument." - event1) - -(defun deallocate-event (event) - "Allow the given event structure to be reused. -In actual Lucid Emacs, you MUST NOT use this event object after -calling this function with it. You will lose. It is not necessary to -call this function, as event objects are garbage- collected like all -other objects; however, it may be more efficient to explicitly -deallocate events when you are sure that this is safe. - -This emulation does not actually deallocate or reuse events -except via garbage collection and `cons'." - nil) - -(defun enqueue-eval-event: (function object) - "Add an eval event to the back of the queue. -It will be the next event read after all pending events." - (setq unread-command-events - (nconc unread-command-events - (list (list 'eval function object))))) - -(defun eval-event-p (obj) - "True if the argument is an eval or menu event object." - (eq (car-safe obj) 'eval)) - -(defun event-button (event) - "Return the button-number of the given mouse-button-press event." - (let ((sym (car (get (car event) 'event-symbol-elements)))) - (cdr (assq sym '((mouse-1 . 1) (mouse-2 . 2) (mouse-3 . 3) - (mouse-4 . 4) (mouse-5 . 5)))))) - -(defun event-function (event) - "Return the callback function of the given timeout, menu, or eval event." - (nth 1 event)) - -(defun event-key (event) - "Return the KeySym of the given key-press event. -The value is an ASCII printing character (not upper case) or a symbol." - (if (symbolp event) - (car (get event 'event-symbol-elements)) - (let ((base (logand event (1- (ash 1 18))))) - (downcase (if (< base 32) (logior base 64) base))))) - -(defun event-object (event) - "Return the function argument of the given timeout, menu, or eval event." - (nth 2 event)) - -(defun event-point (event) - "Return the character position of the given mouse-related event. -If the event did not occur over a window, or did -not occur over text, then this returns nil. Otherwise, it returns an index -into the buffer visible in the event's window." - (posn-point (event-end event))) - -;; Return position of start of line LINE in WINDOW. -;; If LINE is nil, return the last position -;; visible in WINDOW. -(defun event-closest-point-1 (window &optional line) - (let* ((total (- (window-height window) - (if (window-minibuffer-p window) - 0 1))) - (distance (or line total))) - (save-excursion - (goto-char (window-start window)) - (if (= (vertical-motion distance) distance) - (if (not line) - (forward-char -1))) - (point)))) - -(defun event-closest-point (event &optional start-window) - "Return the nearest position to where EVENT ended its motion. -This is computed for the window where EVENT's motion started, -or for window WINDOW if that is specified." - (or start-window (setq start-window (posn-window (event-start event)))) - (if (eq start-window (posn-window (event-end event))) - (if (eq (event-point event) 'vertical-line) - (event-closest-point-1 start-window - (cdr (posn-col-row (event-end event)))) - (if (eq (event-point event) 'mode-line) - (event-closest-point-1 start-window) - (event-point event))) - ;; EVENT ended in some other window. - (let* ((end-w (posn-window (event-end event))) - (end-w-top) - (w-top (nth 1 (window-edges start-window)))) - (setq end-w-top - (if (windowp end-w) - (nth 1 (window-edges end-w)) - (/ (cdr (posn-x-y (event-end event))) - (frame-char-height end-w)))) - (if (>= end-w-top w-top) - (event-closest-point-1 start-window) - (window-start start-window))))) - -(defun event-process (event) - "Return the process of the given process-output event." - (nth 1 event)) - -(defun event-timestamp (event) - "Return the timestamp of the given event object. -In Lucid Emacs, this works for any kind of event. -In this emulation, it returns nil for non-mouse-related events." - (and (listp event) - (posn-timestamp (event-end event)))) - -(defun event-to-character (event &optional lenient) - "Return the closest ASCII approximation to the given event object. -If the event isn't a keypress, this returns nil. -If the second argument is non-nil, then this is lenient in its -translation; it will ignore modifier keys other than control and meta, -and will ignore the shift modifier on those characters which have no -shifted ASCII equivalent (Control-Shift-A for example, will be mapped to -the same ASCII code as Control-A.) If the second arg is nil, then nil -will be returned for events which have no direct ASCII equivalent." - (if (symbolp event) - (and lenient - (cdr (assq event '((backspace . 8) (delete . 127) (tab . 9) - (return . 10) (enter . 10))))) - ;; Our interpretation is, ASCII means anything a number can represent. - (if (integerp event) - event nil))) - -(defun event-window (event) - "Return the window of the given mouse-related event object." - (posn-window (event-end event))) - -(defun event-x (event) - "Return the X position in characters of the given mouse-related event." - (/ (car (posn-col-row (event-end event))) - (frame-char-width (window-frame (event-window event))))) - -(defun event-x-pixel (event) - "Return the X position in pixels of the given mouse-related event." - (car (posn-col-row (event-end event)))) - -(defun event-y (event) - "Return the Y position in characters of the given mouse-related event." - (/ (cdr (posn-col-row (event-end event))) - (frame-char-height (window-frame (event-window event))))) - -(defun event-y-pixel (event) - "Return the Y position in pixels of the given mouse-related event." - (cdr (posn-col-row (event-end event)))) - -(defun key-press-event-p (obj) - "True if the argument is a keyboard event object." - (or (integerp obj) - (and (symbolp obj) - (get obj 'event-symbol-elements)))) - -(defun menu-event-p (obj) - "True if the argument is a menu event object." - (eq (car-safe obj) 'menu)) - -(defun motion-event-p (obj) - "True if the argument is a mouse-motion event object." - (eq (car-safe obj) 'mouse-movement)) - -(defun read-command-event () - "Return the next keyboard or mouse event; execute other events. -This is similar to the function `next-command-event' of Lucid Emacs, -but different in that it returns the event rather than filling in -an existing event object." - (let (event) - (while (progn - (setq event (read-event)) - (not (or (key-press-event-p event) - (button-press-event-p event) - (button-release-event-p event) - (menu-event-p event)))) - (let ((type (car-safe event))) - (cond ((eq type 'eval) - (funcall (nth 1 event) (nth 2 event))) - ((eq type 'switch-frame) - (select-frame (nth 1 event)))))) - event)) - -(defun process-event-p (obj) - "True if the argument is a process-output event object. -GNU Emacs 19 does not currently generate process-output events." - (eq (car-safe obj) 'process)) - -(provide 'levents) - -;;; levents.el ends here -- 2.39.5