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1065 lines
42 KiB
EmacsLisp
1065 lines
42 KiB
EmacsLisp
;;; type-break.el --- encourage rests from typing at appropriate intervals
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;; Copyright (C) 1994, 1995, 1997 Free Software Foundation, Inc.
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;; Author: Noah Friedman <friedman@prep.ai.mit.edu>
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;; Maintainer: friedman@prep.ai.mit.edu
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;; Keywords: extensions, timers
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;; Status: Works in GNU Emacs 19.25 or later, some versions of XEmacs
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;; Created: 1994-07-13
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;; $Id: type-break.el,v 1.12 1997/06/23 05:28:51 friedman Exp stephen $
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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 2, or (at your option)
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;; 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; see the file COPYING. If not, write to the
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;; Free Software Foundation, Inc., 59 Temple Place - Suite 330,
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;; Boston, MA 02111-1307, USA.
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;;; Commentary:
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;; The docstring for the function `type-break-mode' summarizes most of the
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;; details of the interface.
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;; This package relies on the assumption that you live entirely in emacs,
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;; as the author does. If that's not the case for you (e.g. you often
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;; suspend emacs or work in other windows) then this won't help very much;
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;; it will depend on just how often you switch back to emacs. At the very
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;; least, you will want to turn off the keystroke thresholds and rest
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;; interval tracking.
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;; If you prefer not to be queried about taking breaks, but instead just
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;; want to be reminded, do the following:
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;;
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;; (setq type-break-query-mode nil)
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;;
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;; Or call the command `type-break-query-mode' with a negative prefix
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;; argument.
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;; If you find echo area messages annoying and would prefer to see messages
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;; in the mode line instead, do M-x type-break-mode-line-message-mode
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;; or set the variable of the same name to `t'.
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;; This program can truly cons up a storm because of all the calls to
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;; `current-time' (which always returns 3 fresh conses). I'm dismayed by
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;; this, but I think the health of my hands is far more important than a
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;; few pages of virtual memory.
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;; This program has no hope of working in Emacs 18.
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;; This package was inspired by Roland McGrath's hanoi-break.el.
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;; Several people contributed feedback and ideas, including
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;; Roland McGrath <roland@gnu.ai.mit.edu>
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;; Kleanthes Koniaris <kgk@martigny.ai.mit.edu>
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;; Mark Ashton <mpashton@gnu.ai.mit.edu>
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;; Matt Wilding <wilding@cli.com>
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;; Robert S. Boyer <boyer@cs.utexas.edu>
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;;; Code:
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(defgroup type-break nil
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"Encourage the user to take a rest from typing at suitable intervals."
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:prefix "type-break"
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:group 'keyboard)
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;;;###autoload
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(defcustom type-break-mode nil
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"*Non-`nil' means typing break mode is enabled.
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See the docstring for the `type-break-mode' command for more information.
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You must modify via \\[customize] for this variable to have an effect."
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:set (lambda (symbol value)
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(type-break-mode (if value 1 -1)))
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:initialize 'custom-initialize-default
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:type 'boolean
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:group 'type-break
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:require 'type-break)
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;;;###autoload
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(defcustom type-break-interval (* 60 60)
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"*Number of seconds between scheduled typing breaks."
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:type 'integer
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:group 'type-break)
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;;;###autoload
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(defcustom type-break-good-rest-interval (/ type-break-interval 6)
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"*Number of seconds of idle time considered to be an adequate typing rest.
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When this variable is non-`nil', emacs checks the idle time between
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keystrokes. If this idle time is long enough to be considered a \"good\"
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rest from typing, then the next typing break is simply rescheduled for later.
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If a break is interrupted before this much time elapses, the user will be
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asked whether or not really to interrupt the break."
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:type 'integer
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:group 'type-break)
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;;;###autoload
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(defcustom type-break-keystroke-threshold
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;; Assuming typing speed is 35wpm (on the average, do you really
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;; type more than that in a minute? I spend a lot of time reading mail
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;; and simply studying code in buffers) and average word length is
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;; about 5 letters, default upper threshold to the average number of
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;; keystrokes one is likely to type in a break interval. That way if the
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;; user goes through a furious burst of typing activity, cause a typing
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;; break to be required sooner than originally scheduled.
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;; Conversely, the minimum threshold should be about a fifth of this.
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(let* ((wpm 35)
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(avg-word-length 5)
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(upper (* wpm avg-word-length (/ type-break-interval 60)))
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(lower (/ upper 5)))
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(cons lower upper))
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"*Upper and lower bound on number of keystrokes for considering typing break.
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This structure is a pair of numbers (MIN . MAX).
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The first number is the minimum number of keystrokes that must have been
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entered since the last typing break before considering another one, even if
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the scheduled time has elapsed; the break is simply rescheduled until later
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if the minimum threshold hasn't been reached. If this first value is nil,
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then there is no minimum threshold; as soon as the scheduled time has
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elapsed, the user will always be queried.
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The second number is the maximum number of keystrokes that can be entered
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before a typing break is requested immediately, pre-empting the originally
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scheduled break. If this second value is nil, then no pre-emptive breaks
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will occur; only scheduled ones will.
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Keys with bucky bits (shift, control, meta, etc) are counted as only one
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keystroke even though they really require multiple keys to generate them.
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The command `type-break-guesstimate-keystroke-threshold' can be used to
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guess a reasonably good pair of values for this variable."
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:type 'sexp
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:group 'type-break)
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(defcustom type-break-query-mode t
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"*Non-`nil' means ask whether or not to prompt user for breaks.
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If so, call the function specified in the value of the variable
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`type-break-query-function' to do the asking."
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:type 'boolean
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:group 'type-break)
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(defvar type-break-query-function 'yes-or-no-p
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"Function to use for making query for a typing break.
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It should take a string as an argument, the prompt.
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Usually this should be set to `yes-or-no-p' or `y-or-n-p'.
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To avoid being queried at all, set `type-break-query-mode' to `nil'.")
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(defcustom type-break-query-interval 60
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"*Number of seconds between queries to take a break, if put off.
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The user will continue to be prompted at this interval until he or she
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finally submits to taking a typing break."
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:type 'integer
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:group 'type-break)
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(defcustom type-break-time-warning-intervals '(300 120 60 30)
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"*List of time intervals for warnings about upcoming typing break.
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At each of the intervals (specified in seconds) away from a scheduled
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typing break, print a warning in the echo area."
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:type '(repeat integer)
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:group 'type-break)
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(defcustom type-break-keystroke-warning-intervals '(300 200 100 50)
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"*List of keystroke measurements for warnings about upcoming typing break.
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At each of the intervals (specified in keystrokes) away from the upper
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keystroke threshold, print a warning in the echo area.
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If either this variable or the upper threshold is set, then no warnings
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will occur."
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:type '(repeat integer)
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:group 'type-break)
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(defcustom type-break-warning-repeat 40
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"*Number of keystrokes for which warnings should be repeated.
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That is, for each of this many keystrokes the warning is redisplayed
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in the echo area to make sure it's really seen."
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:type 'integer
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:group 'type-break)
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(defcustom type-break-demo-functions
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'(type-break-demo-boring type-break-demo-life type-break-demo-hanoi)
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"*List of functions to consider running as demos during typing breaks.
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When a typing break begins, one of these functions is selected randomly
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to have emacs do something interesting.
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Any function in this list should start a demo which ceases as soon as a
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key is pressed."
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:type '(repeat function)
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:group 'type-break)
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(defvar type-break-post-command-hook '(type-break-check)
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"Hook run indirectly by post-command-hook for typing break functions.
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This is not really intended to be set by the user, but it's probably
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harmless to do so. Mainly it is used by various parts of the typing break
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program to delay actions until after the user has completed some command.
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It exists because `post-command-hook' itself is inaccessible while its
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functions are being run, and some type-break--related functions want to
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remove themselves after running.")
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;; Mode line frobs
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(defcustom type-break-mode-line-message-mode nil
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"*Non-`nil' means put type-break related messages in the mode line.
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Otherwise, messages typically go in the echo area.
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See also `type-break-mode-line-format' and its members."
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:type 'boolean
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:group 'type-break)
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(defvar type-break-mode-line-format
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'(type-break-mode-line-message-mode
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(""
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type-break-mode-line-break-message
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type-break-mode-line-warning))
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"*Format of messages in the mode line concerning typing breaks.")
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(defvar type-break-mode-line-break-message
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'(type-break-mode-line-break-message-p
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type-break-mode-line-break-string))
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(defvar type-break-mode-line-break-message-p nil)
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(defvar type-break-mode-line-break-string " *** TAKE A TYPING BREAK ***")
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(defvar type-break-mode-line-warning
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'(type-break-mode-line-break-message-p
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("")
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(type-break-warning-countdown-string
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(" ***Break in "
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type-break-warning-countdown-string
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" "
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type-break-warning-countdown-string-type
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"***"))))
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(defvar type-break-warning-countdown-string nil
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"If non-nil, this is a countdown for the next typing break.
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This variable, in conjunction with `type-break-warning-countdown-string-type'
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(which indicates whether this value is a number of keystrokes or seconds)
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is installed in mode-line-format to notify of imminent typing breaks.")
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(defvar type-break-warning-countdown-string-type nil
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"Indicates the unit type of `type-break-warning-countdown-string'.
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It will be either \"seconds\" or \"keystrokes\".")
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;; These are internal variables. Do not set them yourself.
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(defvar type-break-alarm-p nil)
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(defvar type-break-keystroke-count 0)
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(defvar type-break-time-last-break nil)
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(defvar type-break-time-next-break nil)
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(defvar type-break-time-last-command (current-time))
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(defvar type-break-current-time-warning-interval nil)
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(defvar type-break-current-keystroke-warning-interval nil)
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(defvar type-break-time-warning-count 0)
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(defvar type-break-keystroke-warning-count 0)
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;; Constant indicating emacs variant.
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;; This can be one of `xemacs', `lucid', `epoch', `mule', etc.
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(defconst type-break-emacs-variant
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(let ((data (match-data))
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(version (cond
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((fboundp 'nemacs-version)
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(nemacs-version))
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(t
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(emacs-version))))
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(alist '(("\\bXEmacs\\b" . xemacs)
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("\\bLucid\\b" . lucid)
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("^Nemacs\\b" . nemacs)
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("^GNU Emacs 19" . standard19)
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("^GNU Emacs 20" . standard19)
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("^GNU Emacs 18" . emacs18)))
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result)
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(while alist
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(cond
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((string-match (car (car alist)) version)
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(setq result (cdr (car alist)))
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(setq alist nil))
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(t
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(setq alist (cdr alist)))))
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(store-match-data data)
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(cond ((eq result 'lucid)
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(and (string= emacs-version "19.8 Lucid")
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(setq result 'lucid-19-8)))
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((memq result '(nemacs emacs18))
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(signal 'error
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"type-break not supported in this version of emacs.")))
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result))
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;;;###autoload
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(defun type-break-mode (&optional prefix)
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"Enable or disable typing-break mode.
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This is a minor mode, but it is global to all buffers by default.
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When this mode is enabled, the user is encouraged to take typing breaks at
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appropriate intervals; either after a specified amount of time or when the
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user has exceeded a keystroke threshold. When the time arrives, the user
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is asked to take a break. If the user refuses at that time, emacs will ask
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again in a short period of time. The idea is to give the user enough time
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to find a good breaking point in his or her work, but be sufficiently
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annoying to discourage putting typing breaks off indefinitely.
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A negative prefix argument disables this mode.
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No argument or any non-negative argument enables it.
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The user may enable or disable this mode by setting the variable of the
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same name, though setting it in that way doesn't reschedule a break or
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reset the keystroke counter.
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If the mode was previously disabled and is enabled as a consequence of
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calling this function, it schedules a break with `type-break-schedule' to
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make sure one occurs (the user can call that command to reschedule the
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break at any time). It also initializes the keystroke counter.
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The variable `type-break-interval' specifies the number of seconds to
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schedule between regular typing breaks. This variable doesn't directly
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affect the time schedule; it simply provides a default for the
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`type-break-schedule' command.
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If set, the variable `type-break-good-rest-interval' specifies the minimum
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amount of time which is considered a reasonable typing break. Whenever
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that time has elapsed, typing breaks are automatically rescheduled for
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later even if emacs didn't prompt you to take one first. Also, if a break
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is ended before this much time has elapsed, the user will be asked whether
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or not to continue.
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The variable `type-break-keystroke-threshold' is used to determine the
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thresholds at which typing breaks should be considered. You can use
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the command `type-break-guesstimate-keystroke-threshold' to try to
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approximate good values for this.
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There are several variables that affect how or when warning messages about
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imminent typing breaks are displayed. They include:
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type-break-mode-line-message-mode
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type-break-time-warning-intervals
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type-break-keystroke-warning-intervals
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type-break-warning-repeat
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type-break-warning-countdown-string
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type-break-warning-countdown-string-type
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There are several variables that affect if, how, and when queries to begin
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a typing break occur. They include:
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type-break-query-mode
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type-break-query-function
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type-break-query-interval
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Finally, the command `type-break-statistics' prints interesting things."
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(interactive "P")
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(type-break-check-post-command-hook)
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(let ((already-enabled type-break-mode))
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(setq type-break-mode (>= (prefix-numeric-value prefix) 0))
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(cond
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((and already-enabled type-break-mode)
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(and (interactive-p)
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(message "type-break-mode is already enabled")))
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(type-break-mode
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(or global-mode-string
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(setq global-mode-string '("")))
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(or (memq 'type-break-mode-line-format
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(default-value 'global-mode-string))
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(setq-default global-mode-string
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(nconc (default-value 'global-mode-string)
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'(type-break-mode-line-format))))
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(type-break-keystroke-reset)
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(type-break-mode-line-countdown-or-break nil)
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(type-break-schedule)
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(and (interactive-p)
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(message "type-break-mode is enabled and reset")))
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(t
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(type-break-keystroke-reset)
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(type-break-mode-line-countdown-or-break nil)
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(type-break-cancel-schedule)
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(and (interactive-p)
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(message "type-break-mode is disabled")))))
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type-break-mode)
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(defun type-break-mode-line-message-mode (&optional prefix)
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"Enable or disable warnings in the mode line about typing breaks.
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A negative prefix argument disables this mode.
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No argument or any non-negative argument enables it.
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The user may also enable or disable this mode simply by setting the
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variable of the same name.
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Variables controlling the display of messages in the mode line include:
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mode-line-format
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global-mode-string
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type-break-mode-line-break-message
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type-break-mode-line-warning"
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(interactive "P")
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(setq type-break-mode-line-message-mode
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(>= (prefix-numeric-value prefix) 0))
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(and (interactive-p)
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(if type-break-mode-line-message-mode
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(message "type-break-mode-line-message-mode is enabled")
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(message "type-break-mode-line-message-mode is disabled")))
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type-break-mode-line-message-mode)
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(defun type-break-query-mode (&optional prefix)
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"Enable or disable warnings in the mode line about typing breaks.
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When enabled, the user is periodically queried about whether to take a
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typing break at that moment. The function which does this query is
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specified by the variable `type-break-query-function'.
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A negative prefix argument disables this mode.
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No argument or any non-negative argument enables it.
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The user may also enable or disable this mode simply by setting the
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variable of the same name."
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(interactive "P")
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(setq type-break-query-mode
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(>= (prefix-numeric-value prefix) 0))
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(and (interactive-p)
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(if type-break-query-mode
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(message "type-break-query-mode is enabled")
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(message "type-break-query-mode is disabled")))
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type-break-query-mode)
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;;;###autoload
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(defun type-break ()
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"Take a typing break.
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During the break, a demo selected from the functions listed in
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`type-break-demo-functions' is run.
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After the typing break is finished, the next break is scheduled
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as per the function `type-break-schedule'."
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(interactive)
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(type-break-cancel-schedule)
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(let ((continue t)
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(start-time (current-time)))
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(setq type-break-time-last-break start-time)
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(while continue
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(save-window-excursion
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;; Eat the screen.
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(and (eq (selected-window) (minibuffer-window))
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(other-window 1))
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(delete-other-windows)
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(scroll-right (window-width))
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(message "Press any key to resume from typing break.")
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(random t)
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(let* ((len (length type-break-demo-functions))
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(idx (random len))
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(fn (nth idx type-break-demo-functions)))
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(condition-case ()
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(funcall fn)
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(error nil))))
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(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))
|
||
;; 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 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)))))
|
||
|
||
(type-break-keystroke-reset)
|
||
(type-break-mode-line-countdown-or-break nil)
|
||
(type-break-schedule))
|
||
|
||
|
||
(defun type-break-schedule (&optional time)
|
||
"Schedule a typing break for TIME seconds from now.
|
||
If time is not specified, default to `type-break-interval'."
|
||
(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)
|
||
(type-break-run-at-time (max 1 time) nil 'type-break-alarm)
|
||
(setq type-break-time-next-break
|
||
(type-break-time-sum (current-time) time)))
|
||
|
||
(defun type-break-cancel-schedule ()
|
||
(type-break-cancel-time-warning-schedule)
|
||
(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 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
|
||
type-break-time-warning-intervals))
|
||
|
||
(or time
|
||
(setq time (type-break-time-difference (current-time)
|
||
type-break-time-next-break)))
|
||
|
||
(while (and type-break-current-time-warning-interval
|
||
(> (car type-break-current-time-warning-interval) time))
|
||
(setq type-break-current-time-warning-interval
|
||
(cdr type-break-current-time-warning-interval)))
|
||
|
||
(cond
|
||
(type-break-current-time-warning-interval
|
||
(setq time (- time (car type-break-current-time-warning-interval)))
|
||
(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))
|
||
(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 ()
|
||
(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)
|
||
(setq type-break-warning-countdown-string nil))
|
||
|
||
(defun type-break-alarm ()
|
||
(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)
|
||
(type-break-time-warning)
|
||
(type-break-mode-line-countdown-or-break 'countdown))
|
||
|
||
|
||
(defun type-break-run-tb-post-command-hook ()
|
||
(and type-break-mode
|
||
(run-hooks 'type-break-post-command-hook)))
|
||
|
||
(defun type-break-check ()
|
||
"Ask to take a typing break if appropriate.
|
||
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."
|
||
(let* ((min-threshold (car type-break-keystroke-threshold))
|
||
(max-threshold (cdr type-break-keystroke-threshold)))
|
||
(and type-break-good-rest-interval
|
||
(progn
|
||
(and (> (type-break-time-difference
|
||
type-break-time-last-command (current-time))
|
||
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
|
||
;; next line is test for 20.2 that can be deleted
|
||
;;(setq type-break-keystroke-count (1+ type-break-keystroke-count))
|
||
(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)))))))
|
||
|
||
(cond
|
||
(type-break-alarm-p
|
||
(cond
|
||
((input-pending-p))
|
||
((eq (selected-window) (minibuffer-window)))
|
||
((and min-threshold
|
||
(< type-break-keystroke-count min-threshold))
|
||
(type-break-schedule))
|
||
(t
|
||
;; If keystroke count is within min-threshold of
|
||
;; max-threshold, lower it to reduce the likelihood of an
|
||
;; immediate subsequent query.
|
||
(and max-threshold
|
||
min-threshold
|
||
(< (- max-threshold type-break-keystroke-count) min-threshold)
|
||
(progn
|
||
(type-break-keystroke-reset)
|
||
(setq type-break-keystroke-count min-threshold)))
|
||
(type-break-query))))
|
||
((and type-break-keystroke-warning-intervals
|
||
max-threshold
|
||
(= type-break-keystroke-warning-count 0)
|
||
(type-break-check-keystroke-warning)))
|
||
((and max-threshold
|
||
(> type-break-keystroke-count max-threshold)
|
||
(not (input-pending-p))
|
||
(not (eq (selected-window) (minibuffer-window))))
|
||
(type-break-keystroke-reset)
|
||
(setq type-break-keystroke-count (or min-threshold 0))
|
||
(type-break-query)))))
|
||
|
||
;; This should return t if warnings were enabled, nil otherwise.
|
||
(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
|
||
((null (car type-break-current-keystroke-warning-interval))
|
||
nil)
|
||
((> left (car type-break-current-keystroke-warning-interval))
|
||
nil)
|
||
(t
|
||
(while (and (car type-break-current-keystroke-warning-interval)
|
||
(< left (car type-break-current-keystroke-warning-interval)))
|
||
(setq type-break-current-keystroke-warning-interval
|
||
(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 ()
|
||
(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))
|
||
(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)))
|
||
(remove-hook 'type-break-post-command-hook 'type-break-do-query))))
|
||
|
||
(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 "You should take a typing break now. Do `M-x type-break'.")
|
||
(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)
|
||
(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 "Warning: typing break due in %s."
|
||
(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)
|
||
(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)))
|
||
;; 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."
|
||
(- (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)
|
||
(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))
|
||
|
||
|
||
;;;###autoload
|
||
(defun type-break-statistics ()
|
||
"Print statistics about typing breaks in a temporary buffer.
|
||
This includes the last time a typing break was taken, when the next one is
|
||
scheduled, the keystroke thresholds and the current keystroke count, etc."
|
||
(interactive)
|
||
(with-output-to-temp-buffer "*Typing Break Statistics*"
|
||
(princ (format "Typing break statistics\n-----------------------\n
|
||
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")
|
||
(if (and type-break-mode type-break-time-next-break)
|
||
(format "%s\t(%s from now)"
|
||
(current-time-string type-break-time-next-break)
|
||
(type-break-format-time
|
||
(type-break-time-difference
|
||
(current-time)
|
||
type-break-time-next-break)))
|
||
"none scheduled")
|
||
(or (car type-break-keystroke-threshold) "none")
|
||
(or (cdr type-break-keystroke-threshold) "none")
|
||
type-break-keystroke-count))))
|
||
|
||
;;;###autoload
|
||
(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. 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 "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
|
||
(setq type-break-keystroke-threshold (cons nil nil)))
|
||
(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)))
|
||
|
||
|
||
;;; 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 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)))))
|
||
|
||
;; 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-format-time (secs)
|
||
(let ((mins (/ secs 60)))
|
||
(cond
|
||
((= mins 1) (format "%d minute" mins))
|
||
((> mins 0) (format "%d minutes" mins))
|
||
((= secs 1) (format "%d second" secs))
|
||
(t (format "%d seconds" secs)))))
|
||
|
||
(defun type-break-keystroke-reset ()
|
||
(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))
|
||
|
||
|
||
;;; 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)
|
||
(cond ((eq type-break-emacs-variant 'standard19)
|
||
(require 'timer)
|
||
(funcall 'run-at-time time repeat function))
|
||
((eq type-break-emacs-variant 'lucid-19-8)
|
||
(let ((name (if (symbolp function)
|
||
(symbol-name function)
|
||
"type-break")))
|
||
(require 'timer)
|
||
(funcall 'start-timer name function time repeat)))
|
||
((memq type-break-emacs-variant '(xemacs lucid))
|
||
(let ((name (if (symbolp function)
|
||
(symbol-name function)
|
||
"type-break")))
|
||
(require 'itimer)
|
||
(funcall 'start-itimer name function time repeat)))))
|
||
|
||
(defun type-break-cancel-function-timers (function)
|
||
(cond ((eq type-break-emacs-variant 'standard19)
|
||
(let ((timer-dont-exit t))
|
||
(funcall 'cancel-function-timers function)))
|
||
((eq type-break-emacs-variant 'lucid-19-8)
|
||
(let ((list timer-list))
|
||
(while list
|
||
(and (eq (funcall 'timer-function (car list)) function)
|
||
(funcall 'delete-timer (car list)))
|
||
(setq list (cdr list)))))
|
||
((memq type-break-emacs-variant '(xemacs lucid))
|
||
(let ((list itimer-list))
|
||
(while list
|
||
(and (eq (funcall 'itimer-function (car list)) function)
|
||
(funcall 'delete-itimer (car list)))
|
||
(setq list (cdr list)))))))
|
||
|
||
|
||
;;; Demo wrappers
|
||
|
||
;; This is a wrapper around hanoi that calls it with an arg large enough to
|
||
;; make the largest discs possible that will fit in the window.
|
||
;; Also, clean up the *Hanoi* buffer after we're done.
|
||
(defun type-break-demo-hanoi ()
|
||
"Take a hanoiing typing break."
|
||
(and (get-buffer "*Hanoi*")
|
||
(kill-buffer "*Hanoi*"))
|
||
(condition-case ()
|
||
(progn
|
||
(hanoi (/ (window-width) 8))
|
||
;; Wait for user to come back.
|
||
(read-char)
|
||
(kill-buffer "*Hanoi*"))
|
||
(quit
|
||
;; eat char
|
||
(read-char)
|
||
(and (get-buffer "*Hanoi*")
|
||
(kill-buffer "*Hanoi*")))))
|
||
|
||
;; This is a wrapper around life that calls it with a `sleep' arg to make
|
||
;; it run a little more leisurely.
|
||
;; Also, clean up the *Life* buffer after we're done.
|
||
(defun type-break-demo-life ()
|
||
"Take a typing break and get a life."
|
||
(let ((continue t))
|
||
(while continue
|
||
(setq continue nil)
|
||
(and (get-buffer "*Life*")
|
||
(kill-buffer "*Life*"))
|
||
(condition-case ()
|
||
(progn
|
||
(life 3)
|
||
;; wait for user to return
|
||
(read-char)
|
||
(kill-buffer "*Life*"))
|
||
(life-extinct
|
||
(message "%s" (get 'life-extinct 'error-message))
|
||
(sit-for 3)
|
||
;; restart demo
|
||
(setq continue t))
|
||
(quit
|
||
(and (get-buffer "*Life*")
|
||
(kill-buffer "*Life*")))))))
|
||
|
||
;; Boring demo, but doesn't use many cycles
|
||
(defun type-break-demo-boring ()
|
||
"Boring typing break demo."
|
||
(let ((rmsg "Press any key to resume from typing break")
|
||
(buffer-name "*Typing Break Buffer*")
|
||
line col pos
|
||
elapsed timeleft tmsg)
|
||
(condition-case ()
|
||
(progn
|
||
(switch-to-buffer (get-buffer-create buffer-name))
|
||
(buffer-disable-undo (current-buffer))
|
||
(erase-buffer)
|
||
(setq line (1+ (/ (window-height) 2)))
|
||
(setq col (/ (- (window-width) (length rmsg)) 2))
|
||
(insert (make-string line ?\C-j)
|
||
(make-string col ?\ )
|
||
rmsg)
|
||
(forward-line -1)
|
||
(beginning-of-line)
|
||
(setq pos (point))
|
||
(while (not (input-pending-p))
|
||
(delete-region pos (progn
|
||
(goto-char pos)
|
||
(end-of-line)
|
||
(point)))
|
||
(setq elapsed (type-break-time-difference
|
||
type-break-time-last-break
|
||
(current-time)))
|
||
(cond
|
||
(type-break-good-rest-interval
|
||
(setq timeleft (- type-break-good-rest-interval elapsed))
|
||
(if (> timeleft 0)
|
||
(setq tmsg (format "You should rest for %s more"
|
||
(type-break-format-time timeleft)))
|
||
(setq tmsg (format "Typing break has lasted %s"
|
||
(type-break-format-time elapsed)))))
|
||
(t
|
||
(setq tmsg (format "Typing break has lasted %s"
|
||
(type-break-format-time elapsed)))))
|
||
(setq col (/ (- (window-width) (length tmsg)) 2))
|
||
(insert (make-string col ?\ ) tmsg)
|
||
(goto-char (point-min))
|
||
(sit-for 60))
|
||
(read-char)
|
||
(kill-buffer buffer-name))
|
||
(quit
|
||
(and (get-buffer buffer-name)
|
||
(kill-buffer buffer-name))))))
|
||
|
||
|
||
(provide 'type-break)
|
||
|
||
(if type-break-mode
|
||
(type-break-mode 1))
|
||
;;; type-break.el ends here
|