;;; type-break.el --- encourage rests from typing at appropriate intervals
-;;; Copyright (C) 1994 Noah S. Friedman
+;; Copyright (C) 1994, 1995, 1997, 2000, 2002, 2003,
+;; 2004, 2005, 2006 Free Software Foundation, Inc.
-;;; Author: Noah Friedman <friedman@prep.ai.mit.edu>
-;;; Maintainer: friedman@prep.ai.mit.edu
-;;; Keywords: extensions, timers
-;;; Status: known to work in GNU Emacs 19.25 or later.
-;;; Created: 1994-07-13
+;; Author: Noah Friedman
+;; Maintainer: Noah Friedman <friedman@splode.com>
+;; Keywords: extensions, timers
+;; Status: Works in GNU Emacs 19.25 or later, some versions of XEmacs
+;; Created: 1994-07-13
-;;; LCD Archive Entry:
-;;; type-break|Noah Friedman|friedman@prep.ai.mit.edu|
-;;; encourage rests from typing at appropriate intervals|
-;;; $Date$|$Revision$||
+;; This file is part of GNU Emacs.
-;;; $Id$
+;; 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 2, or (at your option)
+;; any later version.
-;;; This program 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 2, or (at your option)
-;;; any later version.
-;;;
-;;; This program 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 this program; if not, you can either send email to this
-;;; program's maintainer or write to: The Free Software Foundation,
-;;; Inc.; 675 Massachusetts Avenue; Cambridge, MA 02139, USA.
-
-;;; Commentary:
+;; 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.
-;;; The docstring for the function `type-break-mode' summarizes most of the
-;;; details of the interface.
+;; You should have received a copy of the GNU General Public License
+;; along with GNU Emacs; see the file COPYING. If not, write to the
+;; Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
+;; Boston, MA 02110-1301, USA.
-;;; This package relies on the assumption that you live entirely in emacs,
-;;; as the author does. If that's not the case for you (e.g. you often
-;;; suspend emacs or work in other windows) then this won't help very much;
-;;; it will depend on just how often you switch back to emacs. At the very
-;;; least, you will want to turn off the keystroke thresholds and rest
-;;; interval tracking.
+;;; Commentary:
-;;; This package was inspired by Roland McGrath's hanoi-break.el.
-;;; Thanks to both Roland McGrath <roland@gnu.ai.mit.edu> and Mark Ashton
-;;; <mpashton@gnu.ai.mit.edu> for feedback and ideas.
+;; The docstring for the function `type-break-mode' summarizes most of the
+;; details of the interface.
+
+;; This package relies on the assumption that you live entirely in Emacs,
+;; as the author does. If that's not the case for you (e.g. you often
+;; suspend Emacs or work in other windows) then this won't help very much;
+;; it will depend on just how often you switch back to Emacs. At the very
+;; least, you will want to turn off the keystroke thresholds and rest
+;; interval tracking.
+
+;; If you prefer not to be queried about taking breaks, but instead just
+;; want to be reminded, do the following:
+;;
+;; (setq type-break-query-mode nil)
+;;
+;; Or call the command `type-break-query-mode' with a negative prefix
+;; argument.
+
+;; If you find echo area messages annoying and would prefer to see messages
+;; in the mode line instead, do M-x type-break-mode-line-message-mode
+;; or set the variable of the same name to `t'.
+
+;; This program can truly cons up a storm because of all the calls to
+;; `current-time' (which always returns 3 fresh conses). I'm dismayed by
+;; this, but I think the health of my hands is far more important than a
+;; few pages of virtual memory.
+
+;; This program has no hope of working in Emacs 18.
+
+;; This package was inspired by Roland McGrath's hanoi-break.el.
+;; Several people contributed feedback and ideas, including
+;; Roland McGrath <roland@gnu.org>
+;; Kleanthes Koniaris <kgk@koniaris.com>
+;; Mark Ashton <mpashton@gnu.org>
+;; Matt Wilding <wilding@cli.com>
+;; Robert S. Boyer <boyer@cs.utexas.edu>
;;; Code:
\f
-(require 'timer)
+(defgroup type-break nil
+ "Encourage the user to take a rest from typing at suitable intervals."
+ :prefix "type-break"
+ :group 'keyboard)
-;; Make this nil initially so that the call to type-break-mode at the end
-;; will cause scheduling and so forth to happen.
;;;###autoload
-(defvar type-break-mode nil
- "*Non-`nil' means typing break mode is enabled.
-See the docstring for the `type-break-mode' command for more information.")
+(defcustom type-break-mode nil
+ "Toggle typing break mode.
+See the docstring for the `type-break-mode' command for more information.
+Setting this variable directly does not take effect;
+use either \\[customize] or the function `type-break-mode'."
+ :set (lambda (symbol value)
+ (type-break-mode (if value 1 -1)))
+ :initialize 'custom-initialize-default
+ :type 'boolean
+ :group 'type-break
+ :require 'type-break)
;;;###autoload
-(defvar type-break-interval (* 60 60)
- "*Number of seconds between scheduled typing breaks.")
+(defcustom type-break-interval (* 60 60)
+ "*Number of seconds between scheduled typing breaks."
+ :type 'integer
+ :group 'type-break)
;;;###autoload
-(defvar type-break-good-rest-interval (/ type-break-interval 6)
+(defcustom type-break-good-rest-interval (/ type-break-interval 6)
"*Number of seconds of idle time considered to be an adequate typing rest.
-When this variable is non-`nil', emacs checks the idle time between
+When this variable is non-nil, Emacs checks the idle time between
keystrokes. If this idle time is long enough to be considered a \"good\"
rest from typing, then the next typing break is simply rescheduled for later.
If a break is interrupted before this much time elapses, the user will be
-asked whether or not really to interrupt the break.")
+asked whether or not really to interrupt the break."
+ :type 'integer
+ :group 'type-break)
+
+;;;###autoload
+(defcustom type-break-good-break-interval nil
+ "*Number of seconds considered to be an adequate explicit typing rest.
+
+When this variable is non-nil, its value is considered to be a \"good\"
+length (in seconds) for a break initiated by the command `type-break',
+overriding `type-break-good-rest-interval'. This provides querying of
+break interruptions when `type-break-good-rest-interval' is nil."
+ :type 'integer
+ :group 'type-break)
;;;###autoload
-(defvar type-break-keystroke-threshold
+(defcustom type-break-keystroke-threshold
;; Assuming typing speed is 35wpm (on the average, do you really
;; type more than that in a minute? I spend a lot of time reading mail
;; and simply studying code in buffers) and average word length is
(lower (/ upper 5)))
(cons lower upper))
"*Upper and lower bound on number of keystrokes for considering typing break.
-This structure is a pair of numbers.
+This structure is a pair of numbers (MIN . MAX).
The first number is the minimum number of keystrokes that must have been
entered since the last typing break before considering another one, even if
will occur; only scheduled ones will.
Keys with bucky bits (shift, control, meta, etc) are counted as only one
-keystroke even though they really require multiple keys to generate them.")
+keystroke even though they really require multiple keys to generate them.
+
+The command `type-break-guesstimate-keystroke-threshold' can be used to
+guess a reasonably good pair of values for this variable."
+ :type 'sexp
+ :group 'type-break)
+
+(defcustom type-break-query-mode t
+ "*Non-nil means ask whether or not to prompt user for breaks.
+If so, call the function specified in the value of the variable
+`type-break-query-function' to do the asking."
+ :type 'boolean
+ :group 'type-break)
+
+(defcustom type-break-query-function 'yes-or-no-p
+ "*Function to use for making query for a typing break.
+It should take a string as an argument, the prompt.
+Usually this should be set to `yes-or-no-p' or `y-or-n-p'.
+
+To avoid being queried at all, set `type-break-query-mode' to nil."
+ :type '(radio function
+ (function-item yes-or-no-p)
+ (function-item y-or-n-p))
+ :group 'type-break)
+
+(defcustom type-break-query-interval 60
+ "*Number of seconds between queries to take a break, if put off.
+The user will continue to be prompted at this interval until he or she
+finally submits to taking a typing break."
+ :type 'integer
+ :group 'type-break)
-(defvar type-break-time-warning-intervals '(300 120 60 30)
+(defcustom type-break-time-warning-intervals '(300 120 60 30)
"*List of time intervals for warnings about upcoming typing break.
At each of the intervals (specified in seconds) away from a scheduled
-typing break, print a warning in the echo area.")
+typing break, print a warning in the echo area."
+ :type '(repeat integer)
+ :group 'type-break)
-(defvar type-break-keystroke-warning-intervals '(300 200 100 50)
+(defcustom type-break-keystroke-warning-intervals '(300 200 100 50)
"*List of keystroke measurements for warnings about upcoming typing break.
At each of the intervals (specified in keystrokes) away from the upper
keystroke threshold, print a warning in the echo area.
If either this variable or the upper threshold is set, then no warnings
-Will occur.")
-
-(defvar type-break-query-interval 60
- "*Number of seconds between queries to take a break, if put off.
-The user will continue to be prompted at this interval until he or she
-finally submits to taking a typing break.")
+will occur."
+ :type '(repeat integer)
+ :group 'type-break)
-(defvar type-break-warning-repeat 40
+(defcustom type-break-warning-repeat 40
"*Number of keystrokes for which warnings should be repeated.
That is, for each of this many keystrokes the warning is redisplayed
-in the echo area to make sure it's really seen.")
+in the echo area to make sure it's really seen."
+ :type 'integer
+ :group 'type-break)
-(defvar type-break-query-function 'yes-or-no-p
- "Function to use for making query for a typing break.
-It should take a string as an argument, the prompt.
-Usually this should be set to `yes-or-no-p' or `y-or-n-p'.")
+(defcustom type-break-time-stamp-format "[%H:%M] "
+ "*Timestamp format used to prefix messages.
+Format specifiers are as used by `format-time-string'."
+ :type 'string
+ :group 'type-break)
-(defvar type-break-demo-functions
+(defcustom type-break-demo-functions
'(type-break-demo-boring type-break-demo-life type-break-demo-hanoi)
"*List of functions to consider running as demos during typing breaks.
When a typing break begins, one of these functions is selected randomly
-to have emacs do something interesting.
+to have Emacs do something interesting.
Any function in this list should start a demo which ceases as soon as a
-key is pressed.")
+key is pressed."
+ :type '(repeat function)
+ :group 'type-break)
+
+(defcustom type-break-demo-boring-stats nil
+ "*Show word per minute and keystroke figures in the Boring demo."
+ :type 'boolean
+ :group 'type-break)
+
+(defcustom type-break-terse-messages nil
+ "*Use slightly terser messages."
+ :type 'boolean
+ :group 'type-break)
+
+(defcustom type-break-file-name (convert-standard-filename "~/.type-break")
+ "*Name of file used to save state across sessions.
+If this is nil, no data will be saved across sessions."
+ :type 'file
+ :group 'type-break)
+
+(defvar type-break-post-command-hook '(type-break-check)
+ "Hook run indirectly by `post-command-hook' for typing break functions.
+This is not really intended to be set by the user, but it's probably
+harmless to do so. Mainly it is used by various parts of the typing break
+program to delay actions until after the user has completed some command.
+It exists because `post-command-hook' itself is inaccessible while its
+functions are being run, and some type-break--related functions want to
+remove themselves after running.")
-(defvar type-break-post-command-hook nil
- "Hook run indirectly by post-command-hook for typing break functions.")
+\f
+;; Mode line frobs
+
+(defcustom type-break-mode-line-message-mode nil
+ "*Non-nil means put type-break related messages in the mode line.
+Otherwise, messages typically go in the echo area.
+
+See also `type-break-mode-line-format' and its members."
+ :type 'boolean
+ :group 'type-break)
+
+(defvar type-break-mode-line-format
+ '(type-break-mode-line-message-mode
+ (""
+ type-break-mode-line-break-message
+ type-break-mode-line-warning))
+ "*Format of messages in the mode line concerning typing breaks.")
+
+(defvar type-break-mode-line-break-message
+ '(type-break-mode-line-break-message-p
+ type-break-mode-line-break-string))
+
+(defvar type-break-mode-line-break-message-p nil)
+(defvar type-break-mode-line-break-string " *** TAKE A TYPING BREAK NOW ***")
+
+(defvar type-break-mode-line-warning
+ '(type-break-mode-line-break-message-p
+ ("")
+ (type-break-warning-countdown-string
+ (" *** "
+ "Break in "
+ type-break-warning-countdown-string
+ " "
+ type-break-warning-countdown-string-type
+ "***"))))
+
+(defvar type-break-warning-countdown-string nil
+ "If non-nil, this is a countdown for the next typing break.
+
+This variable, in conjunction with `type-break-warning-countdown-string-type'
+\(which indicates whether this value is a number of keystrokes or seconds)
+is installed in `mode-line-format' to notify of imminent typing breaks.")
+
+(defvar type-break-warning-countdown-string-type nil
+ "Indicates the unit type of `type-break-warning-countdown-string'.
+It will be either \"seconds\" or \"keystrokes\".")
+\f
;; These are internal variables. Do not set them yourself.
-(defvar type-break-alarm-p nil) ; Non-nil when a scheduled typing break is due.
+(defvar type-break-alarm-p nil)
(defvar type-break-keystroke-count 0)
(defvar type-break-time-last-break nil)
(defvar type-break-time-next-break nil)
(defvar type-break-current-keystroke-warning-interval nil)
(defvar type-break-time-warning-count 0)
(defvar type-break-keystroke-warning-count 0)
+(defvar type-break-interval-start nil)
\f
;;;###autoload
When this mode is enabled, the user is encouraged to take typing breaks at
appropriate intervals; either after a specified amount of time or when the
user has exceeded a keystroke threshold. When the time arrives, the user
-is asked to take a break. If the user refuses at that time, emacs will ask
+is asked to take a break. If the user refuses at that time, Emacs will ask
again in a short period of time. The idea is to give the user enough time
to find a good breaking point in his or her work, but be sufficiently
annoying to discourage putting typing breaks off indefinitely.
If set, the variable `type-break-good-rest-interval' specifies the minimum
amount of time which is considered a reasonable typing break. Whenever
that time has elapsed, typing breaks are automatically rescheduled for
-later even if emacs didn't prompt you to take one first. Also, if a break
+later even if Emacs didn't prompt you to take one first. Also, if a break
is ended before this much time has elapsed, the user will be asked whether
-or not to continue.
+or not to continue. A nil value for this variable prevents automatic
+break rescheduling, making `type-break-interval' an upper bound on the time
+between breaks. In this case breaks will be prompted for as usual before
+the upper bound if the keystroke threshold is reached.
+
+If `type-break-good-rest-interval' is nil and
+`type-break-good-break-interval' is set, then confirmation is required to
+interrupt a break before `type-break-good-break-interval' seconds
+have passed. This provides for an upper bound on the time between breaks
+together with confirmation of interruptions to these breaks.
The variable `type-break-keystroke-threshold' is used to determine the
thresholds at which typing breaks should be considered. You can use
-the command `type-break-guestimate-keystroke-threshold' to try to
+the command `type-break-guesstimate-keystroke-threshold' to try to
approximate good values for this.
-Finally, the command `type-break-statistics' prints interesting things."
+There are several variables that affect how or when warning messages about
+imminent typing breaks are displayed. They include:
+
+ `type-break-mode-line-message-mode'
+ `type-break-time-warning-intervals'
+ `type-break-keystroke-warning-intervals'
+ `type-break-warning-repeat'
+ `type-break-warning-countdown-string'
+ `type-break-warning-countdown-string-type'
+
+There are several variables that affect if, how, and when queries to begin
+a typing break occur. They include:
+
+ `type-break-query-mode'
+ `type-break-query-function'
+ `type-break-query-interval'
+
+The command `type-break-statistics' prints interesting things.
+
+Finally, a file (named `type-break-file-name') is used to store information
+across Emacs sessions. This provides recovery of the break status between
+sessions and after a crash. Manual changes to the file may result in
+problems."
(interactive "P")
- ;; make sure it's there.
- (add-hook 'post-command-hook 'type-break-run-tb-post-command-hook 'append)
- (add-hook 'type-break-post-command-hook 'type-break-check)
+ (type-break-check-post-command-hook)
(let ((already-enabled type-break-mode))
(setq type-break-mode (>= (prefix-numeric-value prefix) 0))
(cond
((and already-enabled type-break-mode)
(and (interactive-p)
- (message "type-break-mode is enabled")))
+ (message "Type Break mode is already enabled")))
(type-break-mode
+ (when type-break-file-name
+ (with-current-buffer (find-file-noselect type-break-file-name 'nowarn)
+ (setq buffer-save-without-query t)))
+
+ (or global-mode-string
+ (setq global-mode-string '("")))
+ (or (assq 'type-break-mode-line-message-mode
+ minor-mode-alist)
+ (setq minor-mode-alist
+ (cons type-break-mode-line-format
+ minor-mode-alist)))
+ (type-break-keystroke-reset)
+ (type-break-mode-line-countdown-or-break nil)
+
+ (setq type-break-time-last-break
+ (or (type-break-get-previous-time)
+ (current-time)))
+
+ ;; schedule according to break time from session file
+ (type-break-schedule
+ (let (diff)
+ (if (and type-break-time-last-break
+ (< (setq diff (type-break-time-difference
+ type-break-time-last-break
+ (current-time)))
+ type-break-interval))
+ ;; use the file's value
+ (progn
+ (setq type-break-keystroke-count
+ (type-break-get-previous-count))
+ ;; file the time, in case it was read from the auto-save file
+ (type-break-file-time type-break-interval-start)
+ (setq type-break-interval-start type-break-time-last-break)
+ (- type-break-interval diff))
+ ;; schedule from now
+ (setq type-break-interval-start (current-time))
+ (type-break-file-time type-break-interval-start)
+ type-break-interval))
+ type-break-interval-start
+ type-break-interval)
+
+ (and (interactive-p)
+ (message "Type Break mode is enabled and set")))
+ (t
(type-break-keystroke-reset)
- (type-break-schedule)
+ (type-break-mode-line-countdown-or-break nil)
+ (type-break-cancel-schedule)
+ (do-auto-save)
+ (when type-break-file-name
+ (with-current-buffer (find-file-noselect type-break-file-name
+ 'nowarn)
+ (set-buffer-modified-p nil)
+ (unlock-buffer)
+ (kill-this-buffer)))
(and (interactive-p)
- (message "type-break-mode is enabled and reset")))
- ((interactive-p)
- (message "type-break-mode is disabled"))))
+ (message "Type Break mode is disabled")))))
type-break-mode)
+(defun type-break-mode-line-message-mode (&optional prefix)
+ "Enable or disable warnings in the mode line about typing breaks.
+
+A negative PREFIX argument disables this mode.
+No argument or any non-negative argument enables it.
+
+The user may also enable or disable this mode simply by setting the
+variable of the same name.
+
+Variables controlling the display of messages in the mode line include:
+
+ `mode-line-format'
+ `global-mode-string'
+ `type-break-mode-line-break-message'
+ `type-break-mode-line-warning'"
+ (interactive "P")
+ (setq type-break-mode-line-message-mode
+ (>= (prefix-numeric-value prefix) 0))
+ (and (interactive-p)
+ (if type-break-mode-line-message-mode
+ (message "type-break-mode-line-message-mode is enabled")
+ (message "type-break-mode-line-message-mode is disabled")))
+ type-break-mode-line-message-mode)
+
+(defun type-break-query-mode (&optional prefix)
+ "Enable or disable warnings in the mode line about typing breaks.
+
+When enabled, the user is periodically queried about whether to take a
+typing break at that moment. The function which does this query is
+specified by the variable `type-break-query-function'.
+
+A negative PREFIX argument disables this mode.
+No argument or any non-negative argument enables it.
+
+The user may also enable or disable this mode simply by setting the
+variable of the same name."
+ (interactive "P")
+ (setq type-break-query-mode
+ (>= (prefix-numeric-value prefix) 0))
+ (and (interactive-p)
+ (if type-break-query-mode
+ (message "type-break-query-mode is enabled")
+ (message "type-break-query-mode is disabled")))
+ type-break-query-mode)
+
+\f
+;;; session file functions
+
+(defvar type-break-auto-save-file-name
+ (let ((buffer-file-name type-break-file-name))
+ (make-auto-save-file-name))
+ "Auto-save name of `type-break-file-name'.")
+
+(defun type-break-file-time (&optional time)
+ "File break time in `type-break-file-name', unless the file is locked."
+ (if (and type-break-file-name
+ (not (stringp (file-locked-p type-break-file-name))))
+ (with-current-buffer (find-file-noselect type-break-file-name
+ 'nowarn)
+ (let ((inhibit-read-only t))
+ (erase-buffer)
+ (insert (format "%s\n\n" (or time type-break-interval-start)))
+ ;; file saving is left to auto-save
+ ))))
+
+(defun type-break-file-keystroke-count ()
+ "File keystroke count in `type-break-file-name', unless the file is locked."
+ (if (and type-break-file-name
+ (not (stringp (file-locked-p type-break-file-name))))
+ ;; Prevent deactivation of the mark in some other buffer.
+ (let (deactivate-mark)
+ (with-current-buffer (find-file-noselect type-break-file-name
+ 'nowarn)
+ (save-excursion
+ (let ((inhibit-read-only t))
+ (goto-char (point-min))
+ (forward-line)
+ (delete-region (point) (save-excursion (end-of-line) (point)))
+ (insert (format "%s" type-break-keystroke-count))
+ ;; file saving is left to auto-save
+ ))))))
+
+(defun timep (time)
+ "If TIME is in the format returned by `current-time' then
+return TIME, else return nil."
+ (and (listp time)
+ (eq (length time) 3)
+ (integerp (car time))
+ (integerp (nth 1 time))
+ (integerp (nth 2 time))
+ time))
+
+(defun type-break-choose-file ()
+ "Return file to read from."
+ (cond
+ ((not type-break-file-name)
+ nil)
+ ((and (file-exists-p type-break-auto-save-file-name)
+ (file-readable-p type-break-auto-save-file-name))
+ type-break-auto-save-file-name)
+ ((and (file-exists-p type-break-file-name)
+ (file-readable-p type-break-file-name))
+ type-break-file-name)
+ (t nil)))
+
+(defun type-break-get-previous-time ()
+ "Get previous break time from `type-break-file-name'.
+Returns nil if the file is missing or if the time breaks with the
+`current-time' format."
+ (let ((file (type-break-choose-file)))
+ (if file
+ (timep ;; returns expected format, else nil
+ (with-current-buffer (find-file-noselect file 'nowarn)
+ (save-excursion
+ (goto-char (point-min))
+ (read (current-buffer))))))))
+
+(defun type-break-get-previous-count ()
+ "Get previous keystroke count from `type-break-file-name'.
+Return 0 if the file is missing or if the form read is not an
+integer."
+ (let ((file (type-break-choose-file)))
+ (if (and file
+ (integerp
+ (setq file
+ (with-current-buffer
+ (find-file-noselect file 'nowarn)
+ (save-excursion
+ (goto-char (point-min))
+ (forward-line 1)
+ (read (current-buffer)))))))
+ file
+ 0)))
+
+\f
;;;###autoload
(defun type-break ()
"Take a typing break.
After the typing break is finished, the next break is scheduled
as per the function `type-break-schedule'."
(interactive)
+ (do-auto-save)
(type-break-cancel-schedule)
+ ;; remove any query scheduled during interactive invocation
+ (remove-hook 'type-break-post-command-hook 'type-break-do-query)
(let ((continue t)
(start-time (current-time)))
(setq type-break-time-last-break start-time)
(other-window 1))
(delete-other-windows)
(scroll-right (window-width))
- (message "Press any key to resume from typing break.")
+ (unless type-break-terse-messages
+ (message "Press any key to resume from typing break."))
(random t)
(let* ((len (length type-break-demo-functions))
(funcall fn)
(error nil))))
- (cond
- (type-break-good-rest-interval
- (let ((break-secs (type-break-time-difference
- start-time (current-time))))
- (cond
- ((>= break-secs type-break-good-rest-interval)
- (setq continue nil))
- ;; Don't be pedantic; if user's rest was only a minute short,
- ;; why bother?
- ((> 60 (abs (- break-secs type-break-good-rest-interval)))
- (setq continue nil))
- ((funcall
- type-break-query-function
- (format "You really ought to rest %s more. Continue break? "
- (type-break-format-time (- type-break-good-rest-interval
- break-secs)))))
- (t
- (setq continue nil)))))
- (t (setq continue nil)))))
+ (let ((good-interval (or type-break-good-rest-interval
+ type-break-good-break-interval)))
+ (cond
+ (good-interval
+ (let ((break-secs (type-break-time-difference
+ start-time (current-time))))
+ (cond
+ ((>= break-secs good-interval)
+ (setq continue nil))
+ ;; 60 seconds may be too much leeway if the break is only 3
+ ;; minutes to begin with. You can just say "no" to the query
+ ;; below if you're in that much of a hurry.
+ ;;((> 60 (abs (- break-secs good-interval)))
+ ;; (setq continue nil))
+ ((funcall
+ type-break-query-function
+ (format
+ (if type-break-terse-messages
+ "%s%s remaining. Continue break? "
+ "%sYou really ought to rest %s more. Continue break? ")
+ (type-break-time-stamp)
+ (type-break-format-time (- good-interval
+ break-secs)))))
+ (t
+ (setq continue nil)))))
+ (t (setq continue nil))))))
(type-break-keystroke-reset)
+ (type-break-file-time)
+ (type-break-mode-line-countdown-or-break nil)
(type-break-schedule))
\f
-(defun type-break-schedule (&optional time)
+(defun type-break-schedule (&optional time start interval)
+ "Schedule a typing break for TIME seconds from now.
+If time is not specified it defaults to `type-break-interval'.
+START and INTERVAL are used when recovering a break.
+START is the start of the break (defaults to now).
+INTERVAL is the full length of an interval (defaults to TIME)."
+ (interactive (list (and current-prefix-arg
+ (prefix-numeric-value current-prefix-arg))))
(or time (setq time type-break-interval))
+ (type-break-check-post-command-hook)
(type-break-cancel-schedule)
(type-break-time-warning-schedule time 'reset)
- (run-at-time time nil 'type-break-alarm)
- (setq type-break-time-next-break (current-time))
- (setcar (cdr type-break-time-next-break)
- (+ time (car (cdr type-break-time-next-break)))))
+ (type-break-run-at-time (max 1 time) nil 'type-break-alarm)
+ (setq type-break-time-next-break
+ (type-break-time-sum (or start (current-time))
+ (or interval time))))
(defun type-break-cancel-schedule ()
(type-break-cancel-time-warning-schedule)
- (let ((timer-dont-exit t))
- (cancel-function-timers 'type-break-alarm))
+ (type-break-cancel-function-timers 'type-break-alarm)
(setq type-break-alarm-p nil)
(setq type-break-time-next-break nil))
(defun type-break-time-warning-schedule (&optional time resetp)
- (let (type-break-current-time-warning-interval)
+ (let ((type-break-current-time-warning-interval nil))
(type-break-cancel-time-warning-schedule))
+ (add-hook 'type-break-post-command-hook 'type-break-time-warning 'append)
(cond
(type-break-time-warning-intervals
(and resetp
(setq type-break-current-time-warning-interval
(cdr type-break-current-time-warning-interval))
- (let (type-break-current-time-warning-interval)
- (type-break-cancel-time-warning-schedule))
- (run-at-time time nil 'type-break-time-warning-alarm))))))
+ ;(let (type-break-current-time-warning-interval)
+ ; (type-break-cancel-time-warning-schedule))
+ (type-break-run-at-time (max 1 time) nil 'type-break-time-warning-alarm)
+
+ (cond
+ (resetp
+ (setq type-break-warning-countdown-string nil))
+ (t
+ (setq type-break-warning-countdown-string (number-to-string time))
+ (setq type-break-warning-countdown-string-type "seconds"))))))))
(defun type-break-cancel-time-warning-schedule ()
- (let ((timer-dont-exit t))
- (cancel-function-timers 'type-break-time-warning-alarm))
+ (type-break-cancel-function-timers 'type-break-time-warning-alarm)
(remove-hook 'type-break-post-command-hook 'type-break-time-warning)
(setq type-break-current-time-warning-interval
- type-break-time-warning-intervals))
+ type-break-time-warning-intervals)
+ (setq type-break-time-warning-count 0) ; avoid warnings after break
+ (setq type-break-warning-countdown-string nil))
(defun type-break-alarm ()
- (setq type-break-alarm-p t))
+ (type-break-check-post-command-hook)
+ (setq type-break-alarm-p t)
+ (type-break-mode-line-countdown-or-break 'break))
(defun type-break-time-warning-alarm ()
+ (type-break-check-post-command-hook)
(type-break-time-warning-schedule)
(setq type-break-time-warning-count type-break-warning-repeat)
- (add-hook 'type-break-post-command-hook 'type-break-time-warning 'append))
+ (type-break-time-warning)
+ (type-break-mode-line-countdown-or-break 'countdown))
\f
(defun type-break-run-tb-post-command-hook ()
This may be the case either because the scheduled time has come \(and the
minimum keystroke threshold has been reached\) or because the maximum
keystroke threshold has been exceeded."
+ (type-break-file-keystroke-count)
(let* ((min-threshold (car type-break-keystroke-threshold))
(max-threshold (cdr type-break-keystroke-threshold)))
(and type-break-good-rest-interval
type-break-good-rest-interval)
(progn
(type-break-keystroke-reset)
+ (type-break-mode-line-countdown-or-break nil)
(setq type-break-time-last-break (current-time))
(type-break-schedule)))
(setq type-break-time-last-command (current-time))))
(and type-break-keystroke-threshold
- (setq type-break-keystroke-count
- (+ type-break-keystroke-count (length (this-command-keys)))))
+ (let ((keys (this-command-keys)))
+ (cond
+ ;; Ignore mouse motion
+ ((and (vectorp keys)
+ (consp (aref keys 0))
+ (memq (car (aref keys 0)) '(mouse-movement))))
+ (t
+ (setq type-break-keystroke-count
+ (+ type-break-keystroke-count (length keys)))))))
- ;; This has been optimized for speed; calls to input-pending-p and
- ;; checking for the minibuffer window are only done if it would
- ;; matter for the sake of querying user.
(cond
(type-break-alarm-p
(cond
(type-break-schedule))
(t
;; If keystroke count is within min-threshold of
- ;; max-threshold, lower it to reduce the liklihood of an
+ ;; max-threshold, lower it to reduce the likelihood of an
;; immediate subsequent query.
(and max-threshold
min-threshold
(type-break-query)))))
;; This should return t if warnings were enabled, nil otherwise.
-(defsubst type-break-check-keystroke-warning ()
+(defun type-break-check-keystroke-warning ()
+ ;; This is safe because the caller should have checked that the cdr was
+ ;; non-nil already.
(let ((left (- (cdr type-break-keystroke-threshold)
type-break-keystroke-count)))
(cond
(cdr type-break-current-keystroke-warning-interval)))
(setq type-break-keystroke-warning-count type-break-warning-repeat)
(add-hook 'type-break-post-command-hook 'type-break-keystroke-warning)
+ (setq type-break-warning-countdown-string (number-to-string left))
+ (setq type-break-warning-countdown-string-type "keystrokes")
+ (type-break-mode-line-countdown-or-break 'countdown)
t))))
+;; Arrange for a break query to be made, when the user stops typing furiously.
(defun type-break-query ()
- (condition-case ()
- (cond
- ((let ((type-break-mode nil))
- (funcall type-break-query-function "Take a break from typing now? "))
- (type-break))
- (t
- (type-break-schedule type-break-query-interval)))
- (quit
- (type-break-schedule type-break-query-interval))))
+ (add-hook 'type-break-post-command-hook 'type-break-do-query))
+
+(defun type-break-do-query ()
+ (cond
+ ((not type-break-query-mode)
+ (type-break-noninteractive-query)
+ (type-break-schedule type-break-query-interval)
+ (remove-hook 'type-break-post-command-hook 'type-break-do-query))
+ ((sit-for 2)
+ (condition-case ()
+ (cond
+ ((let ((type-break-mode nil)
+ ;; yes-or-no-p sets this-command to exit-minibuffer,
+ ;; which hoses undo or yank-pop (if you happened to be
+ ;; yanking just when the query occurred).
+ (this-command this-command))
+ ;; Cancel schedule to prevent possibility of a second query
+ ;; from taking place before this one has even returned.
+ ;; The condition-case wrapper will reschedule on quit.
+ (type-break-cancel-schedule)
+ ;; Also prevent a second query when the break is interrupted.
+ (remove-hook 'type-break-post-command-hook 'type-break-do-query)
+ (funcall type-break-query-function
+ (format "%s%s"
+ (type-break-time-stamp)
+ (if type-break-terse-messages
+ "Break now? "
+ "Take a break from typing now? "))))
+ (type-break))
+ (t
+ (type-break-schedule type-break-query-interval)))
+ (quit
+ (type-break-schedule type-break-query-interval))))))
+
+(defun type-break-noninteractive-query (&optional ignored-args)
+ "Null query function which doesn't interrupt user and assumes `no'.
+It prints a reminder in the echo area to take a break, but doesn't enforce
+this or ask the user to start one right now."
+ (cond
+ (type-break-mode-line-message-mode)
+ (t
+ (beep t)
+ (message "%sYou should take a typing break now. Do `M-x type-break'."
+ (type-break-time-stamp))
+ (sit-for 1)
+ (beep t)
+ ;; return nil so query caller knows to reset reminder, as if user
+ ;; said "no" in response to yes-or-no-p.
+ nil)))
(defun type-break-time-warning ()
(cond
((and (car type-break-keystroke-threshold)
(< type-break-keystroke-count (car type-break-keystroke-threshold))))
((> type-break-time-warning-count 0)
- (cond
- ((eq (selected-window) (minibuffer-window)))
- (t
- ;; Pause for a moment so previous messages can be seen.
- (sit-for 2)
- (message "Warning: typing break due in %s."
- (type-break-format-time
- (type-break-time-difference (current-time)
- type-break-time-next-break)))
- (setq type-break-time-warning-count
- (1- type-break-time-warning-count)))))
+ (let ((timeleft (type-break-time-difference (current-time)
+ type-break-time-next-break)))
+ (setq type-break-warning-countdown-string (number-to-string timeleft))
+ (cond
+ ((eq (selected-window) (minibuffer-window)))
+ ;; Do nothing if the command was just a prefix arg, since that will
+ ;; immediately be followed by some other interactive command.
+ ;; Otherwise, it is particularly annoying for the sit-for below to
+ ;; delay redisplay when one types sequences like `C-u -1 C-l'.
+ ((memq this-command '(digit-argument universal-argument)))
+ ((not type-break-mode-line-message-mode)
+ ;; Pause for a moment so any previous message can be seen.
+ (sit-for 2)
+ (message "%sWarning: typing break due in %s."
+ (type-break-time-stamp)
+ (type-break-format-time timeleft))
+ (setq type-break-time-warning-count
+ (1- type-break-time-warning-count))))))
(t
- (remove-hook 'type-break-post-command-hook 'type-break-time-warning))))
+ (remove-hook 'type-break-post-command-hook 'type-break-time-warning)
+ (setq type-break-warning-countdown-string nil))))
(defun type-break-keystroke-warning ()
(cond
((> type-break-keystroke-warning-count 0)
+ (setq type-break-warning-countdown-string
+ (number-to-string (- (cdr type-break-keystroke-threshold)
+ type-break-keystroke-count)))
(cond
((eq (selected-window) (minibuffer-window)))
- (t
+ ;; Do nothing if the command was just a prefix arg, since that will
+ ;; immediately be followed by some other interactive command.
+ ;; Otherwise, it is particularly annoying for the sit-for below to
+ ;; delay redisplay when one types sequences like `C-u -1 C-l'.
+ ((memq this-command '(digit-argument universal-argument)))
+ ((not type-break-mode-line-message-mode)
(sit-for 2)
- (message "Warning: typing break due in %s keystrokes."
+ (message "%sWarning: typing break due in %s keystrokes."
+ (type-break-time-stamp)
(- (cdr type-break-keystroke-threshold)
type-break-keystroke-count))
(setq type-break-keystroke-warning-count
(1- type-break-keystroke-warning-count)))))
(t
(remove-hook 'type-break-post-command-hook
- 'type-break-keystroke-warning))))
+ 'type-break-keystroke-warning)
+ (setq type-break-warning-countdown-string nil))))
+
+(defun type-break-mode-line-countdown-or-break (&optional type)
+ (cond
+ ((not type-break-mode-line-message-mode))
+ ((eq type 'countdown)
+ ;(setq type-break-mode-line-break-message-p nil)
+ (add-hook 'type-break-post-command-hook
+ 'type-break-force-mode-line-update 'append))
+ ((eq type 'break)
+ ;; Alternate
+ (setq type-break-mode-line-break-message-p
+ (not type-break-mode-line-break-message-p))
+ (remove-hook 'type-break-post-command-hook
+ 'type-break-force-mode-line-update))
+ (t
+ (setq type-break-mode-line-break-message-p nil)
+ (setq type-break-warning-countdown-string nil)
+ (remove-hook 'type-break-post-command-hook
+ 'type-break-force-mode-line-update)))
+ (type-break-force-mode-line-update))
\f
;;;###autoload
(interactive)
(with-output-to-temp-buffer "*Typing Break Statistics*"
(princ (format "Typing break statistics\n-----------------------\n
-Last typing break : %s
+Typing break mode is currently %s.
+Interactive query for breaks is %s.
+Warnings of imminent typing breaks in mode line is %s.
+
+Last typing break ended : %s
Next scheduled typing break : %s\n
Minimum keystroke threshold : %s
Maximum keystroke threshold : %s
Current keystroke count : %s"
+ (if type-break-mode "enabled" "disabled")
+ (if type-break-query-mode "enabled" "disabled")
+ (if type-break-mode-line-message-mode "enabled" "disabled")
(if type-break-time-last-break
(current-time-string type-break-time-last-break)
"never")
type-break-keystroke-count))))
;;;###autoload
-(defun type-break-guestimate-keystroke-threshold (wpm &optional wordlen frac)
+(defun type-break-guesstimate-keystroke-threshold (wpm &optional wordlen frac)
"Guess values for the minimum/maximum keystroke threshold for typing breaks.
-If called interactively, the user is prompted for their guess as to how
-many words per minute they usually type. From that, the command sets the
-values in `type-break-keystroke-threshold' based on a fairly simple
-algorithm involving assumptions about the average length of words (5).
-For the minimum threshold, it uses about a quarter of the computed maximum
-threshold.
-When called from lisp programs, the optional args WORDLEN and FRAC can be
+If called interactively, the user is prompted for their guess as to how
+many words per minute they usually type. This value should not be your
+maximum WPM, but your average. Of course, this is harder to gauge since it
+can vary considerably depending on what you are doing. For example, one
+tends to type less when debugging a program as opposed to writing
+documentation. (Perhaps a separate program should be written to estimate
+average typing speed.)
+
+From that, this command sets the values in `type-break-keystroke-threshold'
+based on a fairly simple algorithm involving assumptions about the average
+length of words (5). For the minimum threshold, it uses about a fifth of
+the computed maximum threshold.
+
+When called from Lisp programs, the optional args WORDLEN and FRAC can be
used to override the default assumption about average word length and the
fraction of the maximum threshold to which to set the minimum threshold.
FRAC should be the inverse of the fractional value; for example, a value of
2 would mean to use one half, a value of 4 would mean to use one quarter, etc."
- (interactive "nHow many words per minute do you type? ")
+ (interactive "NOn average, how many words per minute do you type? ")
(let* ((upper (* wpm (or wordlen 5) (/ type-break-interval 60)))
(lower (/ upper (or frac 5))))
(or type-break-keystroke-threshold
(setcar type-break-keystroke-threshold lower)
(setcdr type-break-keystroke-threshold upper)
(if (interactive-p)
- (message "min threshold: %d\tmax threshold: %d" lower upper)
- type-break-keystroke-threshold)))
+ (message "min threshold: %d\tmax threshold: %d" lower upper))
+ type-break-keystroke-threshold))
\f
;;; misc functions
;; Compute the difference, in seconds, between a and b, two structures
;; similar to those returned by `current-time'.
-;; Use addition rather than logand since I found it convenient to add
-;; seconds to the cdr of some of my stored time values, which may throw off
-;; the number of bits in the cdr.
-(defsubst type-break-time-difference (a b)
+;; Use addition rather than logand since that is more robust; the low 16
+;; bits of the seconds might have been incremented, making it more than 16
+;; bits wide.
+(defun type-break-time-difference (a b)
(+ (lsh (- (car b) (car a)) 16)
(- (car (cdr b)) (car (cdr a)))))
-(defsubst type-break-format-time (secs)
+;; Return (in a new list the same in structure to that returned by
+;; `current-time') the sum of the arguments. Each argument may be a time
+;; list or a single integer, a number of seconds.
+;; This function keeps the high and low 16 bits of the seconds properly
+;; balanced so that the lower value never exceeds 16 bits. Otherwise, when
+;; the result is passed to `current-time-string' it will toss some of the
+;; "low" bits and format the time incorrectly.
+(defun type-break-time-sum (&rest tmlist)
+ (let ((high 0)
+ (low 0)
+ (micro 0)
+ tem)
+ (while tmlist
+ (setq tem (car tmlist))
+ (setq tmlist (cdr tmlist))
+ (cond
+ ((numberp tem)
+ (setq low (+ low tem)))
+ (t
+ (setq high (+ high (or (car tem) 0)))
+ (setq low (+ low (or (car (cdr tem)) 0)))
+ (setq micro (+ micro (or (car (cdr (cdr tem))) 0))))))
+
+ (and (>= micro 1000000)
+ (progn
+ (setq tem (/ micro 1000000))
+ (setq low (+ low tem))
+ (setq micro (- micro (* tem 1000000)))))
+
+ (setq tem (lsh low -16))
+ (and (> tem 0)
+ (progn
+ (setq low (logand low 65535))
+ (setq high (+ high tem))))
+
+ (list high low micro)))
+
+(defun type-break-time-stamp (&optional when)
+ (if (fboundp 'format-time-string)
+ (format-time-string type-break-time-stamp-format when)
+ ;; Emacs 19.28 and prior do not have format-time-string.
+ ;; In that case, result is not customizable. Upgrade today!
+ (format "[%s] " (substring (current-time-string when) 11 16))))
+
+(defun type-break-format-time (secs)
(let ((mins (/ secs 60)))
(cond
((= mins 1) (format "%d minute" mins))
(t (format "%d seconds" secs)))))
(defun type-break-keystroke-reset ()
+ (setq type-break-interval-start (current-time)) ; not a keystroke
(setq type-break-keystroke-count 0)
(setq type-break-keystroke-warning-count 0)
(setq type-break-current-keystroke-warning-interval
type-break-keystroke-warning-intervals)
(remove-hook 'type-break-post-command-hook 'type-break-keystroke-warning))
+(defun type-break-force-mode-line-update (&optional all)
+ "Force the mode-line of the current buffer to be redisplayed.
+With optional non-nil ALL, force redisplay of all mode-lines."
+ (and all (save-excursion (set-buffer (other-buffer))))
+ (set-buffer-modified-p (buffer-modified-p)))
+
+;; If an exception occurs in Emacs while running the post command hook, the
+;; value of that hook is clobbered. This is because the value of the
+;; variable is temporarily set to nil while it's running to prevent
+;; recursive application, but it also means an exception aborts the routine
+;; of restoring it. This function is called from the timers to restore it,
+;; just in case.
+(defun type-break-check-post-command-hook ()
+ (add-hook 'post-command-hook 'type-break-run-tb-post-command-hook 'append))
+
+\f
+;;; Timer wrapper functions
+;;;
+;;; These shield type-break from variations in the interval timer packages
+;;; for different versions of Emacs.
+
+(defun type-break-run-at-time (time repeat function)
+ (condition-case nil (or (require 'timer) (require 'itimer)) (error nil))
+ (run-at-time time repeat function))
+
+(defvar timer-dont-exit)
+(defun type-break-cancel-function-timers (function)
+ (let ((timer-dont-exit t))
+ (cancel-function-timers function)))
+
\f
;;; Demo wrappers
(read-char)
(kill-buffer "*Life*"))
(life-extinct
- (message (get 'life-extinct 'error-message))
+ (message "%s" (get 'life-extinct 'error-message))
(sit-for 3)
;; restart demo
(setq continue t))
(and (get-buffer "*Life*")
(kill-buffer "*Life*")))))))
-;; Boring demo, but doesn't use any cycles
+;; Boring demo, but doesn't use many cycles
(defun type-break-demo-boring ()
"Boring typing break demo."
- (let ((msg "Press any key to resume from typing break")
+ (let ((rmsg (if type-break-terse-messages
+ ""
+ "Press any key to resume from typing break"))
(buffer-name "*Typing Break Buffer*")
- line col)
+ lines elapsed timeleft tmsg)
(condition-case ()
(progn
(switch-to-buffer (get-buffer-create buffer-name))
(buffer-disable-undo (current-buffer))
- (erase-buffer)
- (setq line (/ (window-height) 2))
- (setq col (/ (- (window-width) (length msg)) 2))
- (insert (make-string line ?\C-j)
- (make-string col ?\ )
- msg)
- (goto-char (point-min))
+ (setq lines (/ (window-body-height) 2))
+ (unless type-break-terse-messages (setq lines (1- lines)))
+ (if type-break-demo-boring-stats
+ (setq lines (- lines 2)))
+ (setq lines (make-string lines ?\C-j))
+ (while (not (input-pending-p))
+ (erase-buffer)
+ (setq elapsed (type-break-time-difference
+ type-break-time-last-break
+ (current-time)))
+ (let ((good-interval (or type-break-good-rest-interval
+ type-break-good-break-interval)))
+ (cond
+ (good-interval
+ (setq timeleft (- good-interval elapsed))
+ (if (> timeleft 0)
+ (setq tmsg
+ (format (if type-break-terse-messages
+ "Break remaining: %s"
+ "You should rest for %s more")
+ (type-break-format-time timeleft)))
+ (setq tmsg
+ (format (if type-break-terse-messages
+ "Break complete (%s elapsed in total)"
+ "Typing break has lasted %s")
+ (type-break-format-time elapsed)))))
+ (t
+ (setq tmsg
+ (format (if type-break-terse-messages
+ "Break has lasted %s"
+ "Typing break has lasted %s")
+ (type-break-format-time elapsed))))))
+ (insert lines
+ (make-string (/ (- (window-width) (length tmsg)) 2) ?\ )
+ tmsg)
+ (if (> (length rmsg) 0)
+ (insert "\n"
+ (make-string (/ (- (window-width) (length rmsg)) 2)
+ ?\ )
+ rmsg))
+ (if type-break-demo-boring-stats
+ (let*
+ ((message
+ (format
+ (if type-break-terse-messages
+ "Since last break: %s keystrokes\n"
+ "Since your last break you've typed %s keystrokes\n")
+ type-break-keystroke-count))
+ (column-spaces
+ (make-string (/ (- (window-width) (length message)) 2)
+ ?\ ))
+ (wpm (/ (/ (float type-break-keystroke-count) 5)
+ (/ (type-break-time-difference
+ type-break-interval-start
+ type-break-time-last-break)
+ 60.0))))
+ (insert "\n\n" column-spaces message)
+ (if type-break-terse-messages
+ (insert (format " %s%.2f wpm"
+ column-spaces
+ wpm))
+ (setq message
+ (format "at an average of %.2f words per minute"
+ wpm))
+ (insert
+ (make-string (/ (- (window-width) (length message)) 2)
+ ?\ )
+ message))))
+ (goto-char (point-min))
+ (sit-for 60))
(read-char)
(kill-buffer buffer-name))
(quit
\f
(provide 'type-break)
-(type-break-mode t)
-
-;; local variables:
-;; vc-make-backup-files: t
-;; end:
+(if type-break-mode
+ (type-break-mode 1))
+;;; arch-tag: 943a2eb3-07e6-420b-993f-96e4796f5fd0
;;; type-break.el ends here
HCoop / bpt / emacs.git / blobdiff