2003-04-01 18:03:13 +00:00
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;;; time.el --- display time, load and mail indicator in mode line of Emacs -*-coding: utf-8 -*-
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2000-06-17 15:36:33 +00:00
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2003-04-01 18:03:13 +00:00
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;; Copyright (C) 1985, 86, 87, 93, 94, 96, 2000, 2001, 2002, 2003
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2001-04-17 12:19:55 +00:00
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;; Free Software Foundation, Inc.
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2000-06-17 15:36:33 +00:00
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;; Maintainer: FSF
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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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;; Facilities to display current time/date and a new-mail indicator
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;; in the Emacs mode line. The single entry point is `display-time'.
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;;; Code:
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(defgroup display-time nil
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"Display time and load in mode line of Emacs."
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:group 'modeline
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:group 'mail)
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(defcustom display-time-mail-file nil
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"*File name of mail inbox file, for indicating existence of new mail.
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Non-nil and not a string means don't check for mail. nil means use
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default, which is system-dependent, and is the same as used by Rmail."
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2002-09-15 01:51:49 +00:00
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:type '(choice (const :tag "None" none)
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2000-06-17 15:36:33 +00:00
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(const :tag "Default" nil)
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(file :format "%v"))
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:group 'display-time)
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2002-01-27 18:14:55 +00:00
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(defcustom display-time-mail-directory nil
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"*Name of mail inbox directory, for indicating existence of new mail.
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2002-04-30 17:56:19 +00:00
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Any nonempty regular file in the directory is regarded as newly arrived mail.
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If nil, do not check a directory for arriving mail."
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2002-01-27 18:14:55 +00:00
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:type '(choice (const :tag "None" nil)
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(directory :format "%v"))
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:group 'display-time)
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2000-06-17 15:36:33 +00:00
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(defcustom display-time-mail-function nil
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"*Function to call, for indicating existence of new mail.
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2002-04-30 17:56:19 +00:00
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If nil, that means use the default method: check that the file
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specified by `display-time-mail-file' is nonempty or that the
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directory `display-time-mail-directory' contains nonempty files."
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2000-06-17 15:36:33 +00:00
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:type '(choice (const :tag "Default" nil)
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(function))
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:group 'display-time)
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2001-12-22 09:18:01 +00:00
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(defcustom display-time-default-load-average 0
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2003-04-01 18:03:13 +00:00
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"*Which load average value will be shown in the mode line.
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2001-12-22 09:18:01 +00:00
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Almost every system can provide values of load for past 1 minute, past 5 or
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past 15 minutes. The default is to display 1 minute load average."
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:type '(choice (const :tag "1 minute load" 0)
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(const :tag "5 minutes load" 1)
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2002-09-15 01:51:49 +00:00
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(const :tag "15 minutes load" 2)
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(const :tag "None" nil))
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2001-12-22 09:18:01 +00:00
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:group 'display-time)
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2002-09-15 01:51:49 +00:00
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(defvar display-time-load-average nil
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2003-04-01 18:03:13 +00:00
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"Load average currently being shown in mode line.")
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2001-12-22 09:18:01 +00:00
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(defcustom display-time-load-average-threshold 0.1
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2002-01-03 08:37:40 +00:00
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"*Load-average values below this value won't be shown in the mode line."
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:type 'number
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:group 'display-time)
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2001-12-22 09:18:01 +00:00
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2000-06-17 15:36:33 +00:00
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;;;###autoload
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(defcustom display-time-day-and-date nil "\
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*Non-nil means \\[display-time] should display day and date as well as time."
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:type 'boolean
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:group 'display-time)
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(defvar display-time-timer nil)
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(defcustom display-time-interval 60
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"*Seconds between updates of time in the mode line."
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:type 'integer
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:group 'display-time)
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(defcustom display-time-24hr-format nil
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"*Non-nil indicates time should be displayed as hh:mm, 0 <= hh <= 23.
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2001-12-22 09:18:01 +00:00
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nil means 1 <= hh <= 12, and an AM/PM suffix is used."
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2000-06-17 15:36:33 +00:00
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:type 'boolean
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:group 'display-time)
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(defvar display-time-string nil)
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(defcustom display-time-hook nil
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"*List of functions to be called when the time is updated on the mode line."
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:type 'hook
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:group 'display-time)
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(defvar display-time-server-down-time nil
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"Time when mail file's file system was recorded to be down.
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If that file system seems to be up, the value is nil.")
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;;;###autoload
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(defun display-time ()
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"Enable display of time, load level, and mail flag in mode lines.
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This display updates automatically every minute.
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If `display-time-day-and-date' is non-nil, the current day and date
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are displayed as well.
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This runs the normal hook `display-time-hook' after each update."
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(interactive)
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(display-time-mode 1))
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2003-04-01 18:03:13 +00:00
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;; This business used to be simpler when all mode lines had the same
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;; face and the image could just be pbm. Now we try to rely on an xpm
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;; image with a transparent background. Otherwise, set the background
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;; for pbm.
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(defcustom display-time-mail-face nil
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2000-06-17 15:36:33 +00:00
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"Face to use for `display-time-mail-string'.
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2003-04-01 18:03:13 +00:00
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If `display-time-use-mail-icon' is non-nil, the image's
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2005-06-10 14:08:19 +00:00
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background color is the background of this face. Set this to
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make the mail indicator stand out on a color display."
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2000-06-17 15:36:33 +00:00
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:group 'faces
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:group 'display-time
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2005-02-09 15:50:47 +00:00
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:version "22.1"
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2003-04-01 18:03:13 +00:00
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:type '(choice (const :tag "None" nil) face))
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2000-06-17 15:36:33 +00:00
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(defvar display-time-mail-icon
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2002-01-27 18:14:55 +00:00
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(find-image '((:type xpm :file "letter.xpm" :ascent center)
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2003-04-01 18:03:13 +00:00
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(:type pbm :file "letter.pbm" :ascent center)))
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"Image specification to offer as the mail indicator on a graphic display.
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See `display-time-use-mail-icon' and `display-time-mail-face'.")
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2000-06-17 15:36:33 +00:00
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2003-04-01 18:03:13 +00:00
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;; Fixme: Default to icon on graphical display?
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2000-06-17 15:36:33 +00:00
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(defcustom display-time-use-mail-icon nil
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"Non-nil means use an icon as the mail indicator on a graphic display.
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2003-04-01 18:03:13 +00:00
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Otherwise use `display-time-mail-string'. The icon may consume less
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of the mode line. It is specified by `display-time-mail-icon'."
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2000-06-17 15:36:33 +00:00
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:group 'display-time
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:type 'boolean)
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2003-04-01 18:03:13 +00:00
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;; Fixme: maybe default to the character if we can display Unicode.
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(defcustom display-time-mail-string "Mail"
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"String to use as the mail indicator in `display-time-string-forms'.
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This can use the Unicode letter character if you can display it."
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:group 'display-time
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2005-02-09 15:50:47 +00:00
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:version "22.1"
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2003-04-01 18:03:13 +00:00
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:type '(choice (const "Mail")
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;; Use :tag here because the Lucid menu won't display
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;; multibyte text.
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(const :tag "Unicode letter character" "✉")
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string))
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2000-06-17 15:36:33 +00:00
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(defcustom display-time-format nil
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"*A string specifying the format for displaying the time in the mode line.
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See the function `format-time-string' for an explanation of
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how to write this string. If this is nil, the defaults
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depend on `display-time-day-and-date' and `display-time-24hr-format'."
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:type '(choice (const :tag "Default" nil)
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string)
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:group 'display-time)
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(defcustom display-time-string-forms
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'((if (and (not display-time-format) display-time-day-and-date)
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(format-time-string "%a %b %e " now)
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"")
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2004-03-19 02:34:39 +00:00
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(propertize
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(format-time-string (or display-time-format
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(if display-time-24hr-format "%H:%M" "%-I:%M%p"))
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now)
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2004-03-23 07:43:10 +00:00
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'help-echo (format-time-string "%a %b %e, %Y" now))
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2000-06-17 15:36:33 +00:00
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load
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(if mail
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;; Build the string every time to act on customization.
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2003-04-01 18:03:13 +00:00
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;; :set-after doesn't help for `customize-option'. I think it
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;; should.
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(concat
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" "
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(propertize
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display-time-mail-string
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'display `(when (and display-time-use-mail-icon
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(display-graphic-p))
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,@display-time-mail-icon
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,@(if (and display-time-mail-face
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(memq (plist-get (cdr display-time-mail-icon)
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:type)
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'(pbm xbm)))
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(let ((bg (face-attribute display-time-mail-face
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:background)))
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(if (stringp bg)
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(list :background bg)))))
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'face display-time-mail-face
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'help-echo "You have new mail; mouse-2: Read mail"
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2005-05-26 20:43:39 +00:00
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'mouse-face 'mode-line-highlight
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2003-04-01 18:03:13 +00:00
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'local-map (make-mode-line-mouse-map 'mouse-2
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read-mail-command)))
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2000-06-17 15:36:33 +00:00
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""))
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"*A list of expressions governing display of the time in the mode line.
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For most purposes, you can control the time format using `display-time-format'
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which is a more standard interface.
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This expression is a list of expressions that can involve the keywords
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`load', `day', `month', and `year', `12-hours', `24-hours', `minutes',
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`seconds', all numbers in string form, and `monthname', `dayname', `am-pm',
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and `time-zone' all alphabetic strings, and `mail' a true/nil value.
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For example, the form
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'((substring year -2) \"/\" month \"/\" day
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\" \" 24-hours \":\" minutes \":\" seconds
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(if time-zone \" (\") time-zone (if time-zone \")\")
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(if mail \" Mail\" \"\"))
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would give mode line times like `94/12/30 21:07:48 (UTC)'."
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:type 'sexp
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:group 'display-time)
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(defun display-time-event-handler ()
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(display-time-update)
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;; Do redisplay right now, if no input pending.
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(sit-for 0)
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(let* ((current (current-time))
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(timer display-time-timer)
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;; Compute the time when this timer will run again, next.
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(next-time (timer-relative-time
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(list (aref timer 1) (aref timer 2) (aref timer 3))
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(* 5 (aref timer 4)) 0)))
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;; If the activation time is far in the past,
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;; skip executions until we reach a time in the future.
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;; This avoids a long pause if Emacs has been suspended for hours.
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(or (> (nth 0 next-time) (nth 0 current))
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(and (= (nth 0 next-time) (nth 0 current))
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(> (nth 1 next-time) (nth 1 current)))
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(and (= (nth 0 next-time) (nth 0 current))
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(= (nth 1 next-time) (nth 1 current))
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(> (nth 2 next-time) (nth 2 current)))
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(progn
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(timer-set-time timer (timer-next-integral-multiple-of-time
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current display-time-interval)
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display-time-interval)
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(timer-activate timer)))))
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2001-12-22 09:18:01 +00:00
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(defun display-time-next-load-average ()
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(interactive)
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(if (= 3 (setq display-time-load-average (1+ display-time-load-average)))
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(setq display-time-load-average 0))
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(display-time-update)
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(sit-for 0))
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2002-01-27 18:14:55 +00:00
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(defun display-time-mail-check-directory ()
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(let ((mail-files (directory-files display-time-mail-directory t))
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(size 0))
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(while (and mail-files (= size 0))
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;; Count size of regular files only.
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(setq size (+ size (or (and (file-regular-p (car mail-files))
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(nth 7 (file-attributes (car mail-files))))
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0)))
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(setq mail-files (cdr mail-files)))
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(if (> size 0)
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size
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nil)))
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2000-06-17 15:36:33 +00:00
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(defun display-time-update ()
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2003-04-01 18:03:13 +00:00
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"Update the display-time info for the mode line.
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However, don't redisplay right now.
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This is used for things like Rmail `g' that want to force an
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update which can wait for the next redisplay."
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2000-06-17 15:36:33 +00:00
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(let* ((now (current-time))
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(time (current-time-string now))
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2002-09-15 01:51:49 +00:00
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(load (if (null display-time-load-average)
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""
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(condition-case ()
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;; Do not show values less than
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;; `display-time-load-average-threshold'.
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(if (> (* display-time-load-average-threshold 100)
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(nth display-time-load-average (load-average)))
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""
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;; The load average number is mysterious, so
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;; provide some help.
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2003-04-01 18:03:13 +00:00
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(let ((str (format " %03d"
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(nth display-time-load-average
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(load-average)))))
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2002-09-15 01:51:49 +00:00
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(propertize
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(concat (substring str 0 -2) "." (substring str -2))
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2003-04-01 18:03:13 +00:00
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'local-map (make-mode-line-mouse-map
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'mouse-2 'display-time-next-load-average)
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2005-05-26 20:43:39 +00:00
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'mouse-face 'mode-line-highlight
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2003-04-01 18:03:13 +00:00
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'help-echo (concat
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"System load average for past "
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(if (= 0 display-time-load-average)
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"1 minute"
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(if (= 1 display-time-load-average)
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"5 minutes"
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"15 minutes"))
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"; mouse-2: next"))))
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2002-09-15 01:51:49 +00:00
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(error ""))))
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2000-06-17 15:36:33 +00:00
|
|
|
(mail-spool-file (or display-time-mail-file
|
|
|
|
(getenv "MAIL")
|
|
|
|
(concat rmail-spool-directory
|
|
|
|
(user-login-name))))
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|
|
|
(mail (or (and display-time-mail-function
|
|
|
|
(funcall display-time-mail-function))
|
2002-01-27 18:14:55 +00:00
|
|
|
(and display-time-mail-directory
|
|
|
|
(display-time-mail-check-directory))
|
2000-06-17 15:36:33 +00:00
|
|
|
(and (stringp mail-spool-file)
|
|
|
|
(or (null display-time-server-down-time)
|
|
|
|
;; If have been down for 20 min, try again.
|
|
|
|
(> (- (nth 1 now) display-time-server-down-time)
|
|
|
|
1200)
|
|
|
|
(and (< (nth 1 now) display-time-server-down-time)
|
2003-04-01 18:03:13 +00:00
|
|
|
(> (- (nth 1 now)
|
|
|
|
display-time-server-down-time)
|
2000-06-17 15:36:33 +00:00
|
|
|
-64336)))
|
|
|
|
(let ((start-time (current-time)))
|
|
|
|
(prog1
|
|
|
|
(display-time-file-nonempty-p mail-spool-file)
|
2003-04-01 18:03:13 +00:00
|
|
|
(if (> (- (nth 1 (current-time))
|
|
|
|
(nth 1 start-time))
|
2000-06-17 15:36:33 +00:00
|
|
|
20)
|
|
|
|
;; Record that mail file is not accessible.
|
|
|
|
(setq display-time-server-down-time
|
|
|
|
(nth 1 (current-time)))
|
|
|
|
;; Record that mail file is accessible.
|
|
|
|
(setq display-time-server-down-time nil)))))))
|
|
|
|
(24-hours (substring time 11 13))
|
2005-05-16 11:34:49 +00:00
|
|
|
(hour (string-to-number 24-hours))
|
2000-06-17 15:36:33 +00:00
|
|
|
(12-hours (int-to-string (1+ (% (+ hour 11) 12))))
|
|
|
|
(am-pm (if (>= hour 12) "pm" "am"))
|
|
|
|
(minutes (substring time 14 16))
|
|
|
|
(seconds (substring time 17 19))
|
|
|
|
(time-zone (car (cdr (current-time-zone now))))
|
|
|
|
(day (substring time 8 10))
|
|
|
|
(year (substring time 20 24))
|
|
|
|
(monthname (substring time 4 7))
|
|
|
|
(month
|
|
|
|
(cdr
|
|
|
|
(assoc
|
|
|
|
monthname
|
|
|
|
'(("Jan" . "1") ("Feb" . "2") ("Mar" . "3") ("Apr" . "4")
|
|
|
|
("May" . "5") ("Jun" . "6") ("Jul" . "7") ("Aug" . "8")
|
|
|
|
("Sep" . "9") ("Oct" . "10") ("Nov" . "11") ("Dec" . "12")))))
|
|
|
|
(dayname (substring time 0 3)))
|
|
|
|
(setq display-time-string
|
|
|
|
(mapconcat 'eval display-time-string-forms ""))
|
|
|
|
;; This is inside the let binding, but we are not going to document
|
|
|
|
;; what variables are available.
|
|
|
|
(run-hooks 'display-time-hook))
|
|
|
|
(force-mode-line-update))
|
|
|
|
|
|
|
|
(defun display-time-file-nonempty-p (file)
|
|
|
|
(and (file-exists-p file)
|
|
|
|
(< 0 (nth 7 (file-attributes (file-chase-links file))))))
|
|
|
|
|
2000-09-29 03:26:00 +00:00
|
|
|
;;;###autoload
|
|
|
|
(define-minor-mode display-time-mode
|
|
|
|
"Toggle display of time, load level, and mail flag in mode lines.
|
|
|
|
With a numeric arg, enable this display if arg is positive.
|
|
|
|
|
|
|
|
When this display is enabled, it updates automatically every minute.
|
|
|
|
If `display-time-day-and-date' is non-nil, the current day and date
|
|
|
|
are displayed as well.
|
|
|
|
This runs the normal hook `display-time-hook' after each update."
|
2000-11-03 22:36:12 +00:00
|
|
|
:global t :group 'display-time
|
2002-09-15 01:51:49 +00:00
|
|
|
(and display-time-timer (cancel-timer display-time-timer))
|
|
|
|
(setq display-time-timer nil)
|
|
|
|
(setq display-time-string "")
|
|
|
|
(or global-mode-string (setq global-mode-string '("")))
|
|
|
|
(setq display-time-load-average display-time-default-load-average)
|
|
|
|
(if display-time-mode
|
|
|
|
(progn
|
|
|
|
(or (memq 'display-time-string global-mode-string)
|
|
|
|
(setq global-mode-string
|
|
|
|
(append global-mode-string '(display-time-string))))
|
|
|
|
;; Set up the time timer.
|
|
|
|
(setq display-time-timer
|
|
|
|
(run-at-time t display-time-interval
|
|
|
|
'display-time-event-handler))
|
|
|
|
;; Make the time appear right away.
|
|
|
|
(display-time-update)
|
|
|
|
;; When you get new mail, clear "Mail" from the mode line.
|
|
|
|
(add-hook 'rmail-after-get-new-mail-hook
|
|
|
|
'display-time-event-handler))
|
|
|
|
(remove-hook 'rmail-after-get-new-mail-hook
|
|
|
|
'display-time-event-handler)))
|
2000-06-17 15:36:33 +00:00
|
|
|
|
|
|
|
(provide 'time)
|
|
|
|
|
2003-09-01 15:45:59 +00:00
|
|
|
;;; arch-tag: b9c1623f-b5cb-48e4-b650-482a4d23c5a6
|
2000-06-17 15:36:33 +00:00
|
|
|
;;; time.el ends here
|