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b7eb6e8a | 1 | ;;; time.el --- display time, load and mail indicator in mode line of Emacs -*-coding: utf-8 -*- |
c2acf685 | 2 | |
0d30b337 | 3 | ;; Copyright (C) 1985, 1986, 1987, 1993, 1994, 1996, 2000, 2001, 2002, |
409cc4a3 | 4 | ;; 2003, 2004, 2005, 2006, 2007, 2008 Free Software Foundation, Inc. |
c2acf685 SM |
5 | |
6 | ;; Maintainer: FSF | |
7 | ||
8 | ;; This file is part of GNU Emacs. | |
9 | ||
10 | ;; GNU Emacs is free software; you can redistribute it and/or modify | |
11 | ;; it under the terms of the GNU General Public License as published by | |
b4aa6026 | 12 | ;; the Free Software Foundation; either version 3, or (at your option) |
c2acf685 SM |
13 | ;; any later version. |
14 | ||
15 | ;; GNU Emacs is distributed in the hope that it will be useful, | |
16 | ;; but WITHOUT ANY WARRANTY; without even the implied warranty of | |
17 | ;; MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
18 | ;; GNU General Public License for more details. | |
19 | ||
20 | ;; You should have received a copy of the GNU General Public License | |
21 | ;; along with GNU Emacs; see the file COPYING. If not, write to the | |
086add15 LK |
22 | ;; Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor, |
23 | ;; Boston, MA 02110-1301, USA. | |
c2acf685 SM |
24 | |
25 | ;;; Commentary: | |
26 | ||
27 | ;; Facilities to display current time/date and a new-mail indicator | |
aff2ba04 RS |
28 | ;; in the Emacs mode line. The entry point is `display-time'. |
29 | ||
30 | ;; Display time world in a buffer, the entry point is | |
31 | ;; `display-time-world'. | |
c2acf685 SM |
32 | |
33 | ;;; Code: | |
34 | ||
35 | (defgroup display-time nil | |
36 | "Display time and load in mode line of Emacs." | |
97904e51 | 37 | :group 'mode-line |
c2acf685 SM |
38 | :group 'mail) |
39 | ||
40 | ||
c2acf685 SM |
41 | (defcustom display-time-mail-file nil |
42 | "*File name of mail inbox file, for indicating existence of new mail. | |
cbb7527f | 43 | Non-nil and not a string means don't check for mail; nil means use |
c2acf685 | 44 | default, which is system-dependent, and is the same as used by Rmail." |
fe6456af | 45 | :type '(choice (const :tag "None" none) |
c2acf685 SM |
46 | (const :tag "Default" nil) |
47 | (file :format "%v")) | |
48 | :group 'display-time) | |
49 | ||
cc351ed4 PJ |
50 | (defcustom display-time-mail-directory nil |
51 | "*Name of mail inbox directory, for indicating existence of new mail. | |
ad68bb68 RS |
52 | Any nonempty regular file in the directory is regarded as newly arrived mail. |
53 | If nil, do not check a directory for arriving mail." | |
cc351ed4 PJ |
54 | :type '(choice (const :tag "None" nil) |
55 | (directory :format "%v")) | |
56 | :group 'display-time) | |
57 | ||
c2acf685 SM |
58 | (defcustom display-time-mail-function nil |
59 | "*Function to call, for indicating existence of new mail. | |
ad68bb68 RS |
60 | If nil, that means use the default method: check that the file |
61 | specified by `display-time-mail-file' is nonempty or that the | |
62 | directory `display-time-mail-directory' contains nonempty files." | |
c2acf685 SM |
63 | :type '(choice (const :tag "Default" nil) |
64 | (function)) | |
65 | :group 'display-time) | |
66 | ||
4b05e68d | 67 | (defcustom display-time-default-load-average 0 |
b7eb6e8a | 68 | "*Which load average value will be shown in the mode line. |
4b05e68d PJ |
69 | Almost every system can provide values of load for past 1 minute, past 5 or |
70 | past 15 minutes. The default is to display 1 minute load average." | |
71 | :type '(choice (const :tag "1 minute load" 0) | |
72 | (const :tag "5 minutes load" 1) | |
fe6456af RS |
73 | (const :tag "15 minutes load" 2) |
74 | (const :tag "None" nil)) | |
4b05e68d PJ |
75 | :group 'display-time) |
76 | ||
fe6456af | 77 | (defvar display-time-load-average nil |
b7eb6e8a | 78 | "Load average currently being shown in mode line.") |
4b05e68d PJ |
79 | |
80 | (defcustom display-time-load-average-threshold 0.1 | |
b7b4e4d4 PJ |
81 | "*Load-average values below this value won't be shown in the mode line." |
82 | :type 'number | |
83 | :group 'display-time) | |
4b05e68d | 84 | |
c2acf685 SM |
85 | ;;;###autoload |
86 | (defcustom display-time-day-and-date nil "\ | |
87 | *Non-nil means \\[display-time] should display day and date as well as time." | |
88 | :type 'boolean | |
89 | :group 'display-time) | |
90 | ||
91 | (defvar display-time-timer nil) | |
92 | ||
93 | (defcustom display-time-interval 60 | |
94 | "*Seconds between updates of time in the mode line." | |
95 | :type 'integer | |
96 | :group 'display-time) | |
97 | ||
98 | (defcustom display-time-24hr-format nil | |
99 | "*Non-nil indicates time should be displayed as hh:mm, 0 <= hh <= 23. | |
7d326782 | 100 | A value of nil means 1 <= hh <= 12, and an AM/PM suffix is used." |
c2acf685 SM |
101 | :type 'boolean |
102 | :group 'display-time) | |
103 | ||
104 | (defvar display-time-string nil) | |
105 | ||
106 | (defcustom display-time-hook nil | |
107 | "*List of functions to be called when the time is updated on the mode line." | |
108 | :type 'hook | |
109 | :group 'display-time) | |
110 | ||
111 | (defvar display-time-server-down-time nil | |
112 | "Time when mail file's file system was recorded to be down. | |
113 | If that file system seems to be up, the value is nil.") | |
114 | ||
dca2168c | 115 | (defcustom zoneinfo-style-world-list |
aff2ba04 RS |
116 | '(("America/Los_Angeles" "Seattle") |
117 | ("America/New_York" "New York") | |
118 | ("Europe/London" "London") | |
119 | ("Europe/Paris" "Paris") | |
120 | ("Asia/Calcutta" "Bangalore") | |
121 | ("Asia/Tokyo" "Tokyo")) | |
dca2168c EZ |
122 | "Alist of zoneinfo-style time zones and places for `display-time-world'. |
123 | Each element has the form (TIMEZONE LABEL). | |
124 | TIMEZONE should be a string of the form AREA/LOCATION, where AREA is | |
125 | the name of a region -- a continent or ocean, and LOCATION is the name | |
126 | of a specific location, e.g., a city, within that region. | |
127 | LABEL is a string to display as the label of that TIMEZONE's time." | |
128 | :group 'display-time | |
129 | :type '(repeat (list string string)) | |
130 | :version "23.1") | |
131 | ||
132 | (defcustom legacy-style-world-list | |
133 | '(("PST8PDT" "Seattle") | |
134 | ("EST5EDT" "New York") | |
9db0c29b | 135 | ("GMT0BST" "London") |
dca2168c | 136 | ("CET-1CDT" "Paris") |
9db0c29b EZ |
137 | ("IST-5:30" "Bangalore") |
138 | ("JST-9" "Tokyo")) | |
dca2168c EZ |
139 | "Alist of traditional-style time zones and places for `display-time-world'. |
140 | Each element has the form (TIMEZONE LABEL). | |
141 | TIMEZONE should be a string of the form: | |
142 | ||
143 | std[+|-]offset[dst[offset][,date[/time],date[/time]]] | |
144 | ||
145 | See the documentation of the TZ environment variable on your system, | |
146 | for more details about the format of TIMEZONE. | |
147 | LABEL is a string to display as the label of that TIMEZONE's time." | |
148 | :group 'display-time | |
149 | :type '(repeat (list string string)) | |
150 | :version "23.1") | |
151 | ||
152 | (defcustom display-time-world-list | |
36d4b145 JR |
153 | ;; Determine if zoneinfo style timezones are supported by testing that |
154 | ;; America/New York and Europe/London return different timezones. | |
155 | (let (gmt nyt) | |
156 | (set-time-zone-rule "America/New York") | |
157 | (setq nyt (format-time-string "%z")) | |
158 | (set-time-zone-rule "Europe/London") | |
159 | (setq gmt (format-time-string "%z")) | |
160 | (set-time-zone-rule nil) | |
161 | (if (string-equal nyt gmt) | |
162 | legacy-style-world-list | |
163 | zoneinfo-style-world-list)) | |
dca2168c | 164 | "Alist of time zones and places for `display-time-world' to display. |
aff2ba04 | 165 | Each element has the form (TIMEZONE LABEL). |
dca2168c EZ |
166 | TIMEZONE should be in the format supported by `set-time-zone-rule' on |
167 | your system. See the documentation of `zoneinfo-style-world-list' and | |
168 | \`legacy-style-world-list' for two widely used formats. | |
169 | LABEL is a string to display as the label of that TIMEZONE's time." | |
aff2ba04 RS |
170 | :group 'display-time |
171 | :type '(repeat (list string string)) | |
172 | :version "23.1") | |
173 | ||
658dcd47 | 174 | (defcustom display-time-world-time-format "%A %d %B %R %Z" |
aff2ba04 RS |
175 | "Format of the time displayed, see `format-time-string'." |
176 | :group 'display-time | |
177 | :type 'string | |
178 | :version "23.1") | |
179 | ||
180 | (defcustom display-time-world-buffer-name "*wclock*" | |
181 | "Name of the wclock buffer." | |
182 | :group 'display-time | |
183 | :type 'string | |
184 | :version "23.1") | |
185 | ||
186 | (defcustom display-time-world-timer-enable t | |
187 | "If non-nil, a timer will update the world clock." | |
188 | :group 'display-time | |
189 | :type 'boolean | |
190 | :version "23.1") | |
191 | ||
192 | (defcustom display-time-world-timer-second 60 | |
193 | "Interval in seconds for updating the world clock." | |
194 | :group 'display-time | |
195 | :type 'integer | |
196 | :version "23.1") | |
197 | ||
198 | (defvar display-time-world-mode-map | |
199 | (let ((map (make-sparse-keymap))) | |
200 | (define-key map "q" 'kill-this-buffer) | |
201 | map) | |
202 | "Keymap of Display Time World mode") | |
203 | ||
c2acf685 SM |
204 | ;;;###autoload |
205 | (defun display-time () | |
206 | "Enable display of time, load level, and mail flag in mode lines. | |
207 | This display updates automatically every minute. | |
208 | If `display-time-day-and-date' is non-nil, the current day and date | |
209 | are displayed as well. | |
210 | This runs the normal hook `display-time-hook' after each update." | |
211 | (interactive) | |
212 | (display-time-mode 1)) | |
213 | ||
b7eb6e8a DL |
214 | ;; This business used to be simpler when all mode lines had the same |
215 | ;; face and the image could just be pbm. Now we try to rely on an xpm | |
216 | ;; image with a transparent background. Otherwise, set the background | |
217 | ;; for pbm. | |
218 | ||
219 | (defcustom display-time-mail-face nil | |
c2acf685 | 220 | "Face to use for `display-time-mail-string'. |
b7eb6e8a | 221 | If `display-time-use-mail-icon' is non-nil, the image's |
6bd47b39 JB |
222 | background color is the background of this face. Set this to |
223 | make the mail indicator stand out on a color display." | |
83033a3a | 224 | :group 'mode-line-faces |
c2acf685 | 225 | :group 'display-time |
bf247b6e | 226 | :version "22.1" |
b7eb6e8a | 227 | :type '(choice (const :tag "None" nil) face)) |
c2acf685 SM |
228 | |
229 | (defvar display-time-mail-icon | |
cc351ed4 | 230 | (find-image '((:type xpm :file "letter.xpm" :ascent center) |
b7eb6e8a DL |
231 | (:type pbm :file "letter.pbm" :ascent center))) |
232 | "Image specification to offer as the mail indicator on a graphic display. | |
233 | See `display-time-use-mail-icon' and `display-time-mail-face'.") | |
c2acf685 | 234 | |
b7eb6e8a | 235 | ;; Fixme: Default to icon on graphical display? |
c2acf685 | 236 | (defcustom display-time-use-mail-icon nil |
d7baab9c | 237 | "Non-nil means use an icon as mail indicator on a graphic display. |
b7eb6e8a DL |
238 | Otherwise use `display-time-mail-string'. The icon may consume less |
239 | of the mode line. It is specified by `display-time-mail-icon'." | |
c2acf685 SM |
240 | :group 'display-time |
241 | :type 'boolean) | |
242 | ||
b7eb6e8a DL |
243 | ;; Fixme: maybe default to the character if we can display Unicode. |
244 | (defcustom display-time-mail-string "Mail" | |
245 | "String to use as the mail indicator in `display-time-string-forms'. | |
246 | This can use the Unicode letter character if you can display it." | |
247 | :group 'display-time | |
bf247b6e | 248 | :version "22.1" |
b7eb6e8a DL |
249 | :type '(choice (const "Mail") |
250 | ;; Use :tag here because the Lucid menu won't display | |
251 | ;; multibyte text. | |
252 | (const :tag "Unicode letter character" "✉") | |
253 | string)) | |
254 | ||
c2acf685 | 255 | (defcustom display-time-format nil |
d7baab9c | 256 | "*String specifying format for displaying the time in the mode line. |
c2acf685 SM |
257 | See the function `format-time-string' for an explanation of |
258 | how to write this string. If this is nil, the defaults | |
259 | depend on `display-time-day-and-date' and `display-time-24hr-format'." | |
260 | :type '(choice (const :tag "Default" nil) | |
261 | string) | |
262 | :group 'display-time) | |
263 | ||
264 | (defcustom display-time-string-forms | |
265 | '((if (and (not display-time-format) display-time-day-and-date) | |
266 | (format-time-string "%a %b %e " now) | |
267 | "") | |
e93b2f39 SM |
268 | (propertize |
269 | (format-time-string (or display-time-format | |
270 | (if display-time-24hr-format "%H:%M" "%-I:%M%p")) | |
271 | now) | |
ef3e9175 | 272 | 'help-echo (format-time-string "%a %b %e, %Y" now)) |
c2acf685 SM |
273 | load |
274 | (if mail | |
275 | ;; Build the string every time to act on customization. | |
b7eb6e8a DL |
276 | ;; :set-after doesn't help for `customize-option'. I think it |
277 | ;; should. | |
278 | (concat | |
279 | " " | |
280 | (propertize | |
281 | display-time-mail-string | |
282 | 'display `(when (and display-time-use-mail-icon | |
283 | (display-graphic-p)) | |
284 | ,@display-time-mail-icon | |
285 | ,@(if (and display-time-mail-face | |
286 | (memq (plist-get (cdr display-time-mail-icon) | |
287 | :type) | |
288 | '(pbm xbm))) | |
289 | (let ((bg (face-attribute display-time-mail-face | |
290 | :background))) | |
291 | (if (stringp bg) | |
292 | (list :background bg))))) | |
293 | 'face display-time-mail-face | |
294 | 'help-echo "You have new mail; mouse-2: Read mail" | |
3a02b63e | 295 | 'mouse-face 'mode-line-highlight |
b7eb6e8a DL |
296 | 'local-map (make-mode-line-mouse-map 'mouse-2 |
297 | read-mail-command))) | |
c2acf685 | 298 | "")) |
d7baab9c | 299 | "*List of expressions governing display of the time in the mode line. |
c2acf685 SM |
300 | For most purposes, you can control the time format using `display-time-format' |
301 | which is a more standard interface. | |
302 | ||
303 | This expression is a list of expressions that can involve the keywords | |
304 | `load', `day', `month', and `year', `12-hours', `24-hours', `minutes', | |
305 | `seconds', all numbers in string form, and `monthname', `dayname', `am-pm', | |
306 | and `time-zone' all alphabetic strings, and `mail' a true/nil value. | |
307 | ||
308 | For example, the form | |
309 | ||
310 | '((substring year -2) \"/\" month \"/\" day | |
311 | \" \" 24-hours \":\" minutes \":\" seconds | |
312 | (if time-zone \" (\") time-zone (if time-zone \")\") | |
313 | (if mail \" Mail\" \"\")) | |
314 | ||
315 | would give mode line times like `94/12/30 21:07:48 (UTC)'." | |
316 | :type 'sexp | |
317 | :group 'display-time) | |
318 | ||
319 | (defun display-time-event-handler () | |
320 | (display-time-update) | |
321 | ;; Do redisplay right now, if no input pending. | |
322 | (sit-for 0) | |
323 | (let* ((current (current-time)) | |
324 | (timer display-time-timer) | |
325 | ;; Compute the time when this timer will run again, next. | |
326 | (next-time (timer-relative-time | |
327 | (list (aref timer 1) (aref timer 2) (aref timer 3)) | |
328 | (* 5 (aref timer 4)) 0))) | |
329 | ;; If the activation time is far in the past, | |
330 | ;; skip executions until we reach a time in the future. | |
331 | ;; This avoids a long pause if Emacs has been suspended for hours. | |
332 | (or (> (nth 0 next-time) (nth 0 current)) | |
333 | (and (= (nth 0 next-time) (nth 0 current)) | |
334 | (> (nth 1 next-time) (nth 1 current))) | |
335 | (and (= (nth 0 next-time) (nth 0 current)) | |
336 | (= (nth 1 next-time) (nth 1 current)) | |
337 | (> (nth 2 next-time) (nth 2 current))) | |
338 | (progn | |
339 | (timer-set-time timer (timer-next-integral-multiple-of-time | |
340 | current display-time-interval) | |
341 | display-time-interval) | |
342 | (timer-activate timer))))) | |
343 | ||
4b05e68d PJ |
344 | (defun display-time-next-load-average () |
345 | (interactive) | |
346 | (if (= 3 (setq display-time-load-average (1+ display-time-load-average))) | |
347 | (setq display-time-load-average 0)) | |
348 | (display-time-update) | |
349 | (sit-for 0)) | |
350 | ||
cc351ed4 PJ |
351 | (defun display-time-mail-check-directory () |
352 | (let ((mail-files (directory-files display-time-mail-directory t)) | |
353 | (size 0)) | |
354 | (while (and mail-files (= size 0)) | |
355 | ;; Count size of regular files only. | |
356 | (setq size (+ size (or (and (file-regular-p (car mail-files)) | |
357 | (nth 7 (file-attributes (car mail-files)))) | |
358 | 0))) | |
359 | (setq mail-files (cdr mail-files))) | |
360 | (if (> size 0) | |
361 | size | |
362 | nil))) | |
363 | ||
c2acf685 | 364 | (defun display-time-update () |
b7eb6e8a DL |
365 | "Update the display-time info for the mode line. |
366 | However, don't redisplay right now. | |
367 | ||
368 | This is used for things like Rmail `g' that want to force an | |
369 | update which can wait for the next redisplay." | |
c2acf685 SM |
370 | (let* ((now (current-time)) |
371 | (time (current-time-string now)) | |
fe6456af RS |
372 | (load (if (null display-time-load-average) |
373 | "" | |
374 | (condition-case () | |
375 | ;; Do not show values less than | |
376 | ;; `display-time-load-average-threshold'. | |
377 | (if (> (* display-time-load-average-threshold 100) | |
378 | (nth display-time-load-average (load-average))) | |
379 | "" | |
380 | ;; The load average number is mysterious, so | |
381 | ;; provide some help. | |
b7eb6e8a DL |
382 | (let ((str (format " %03d" |
383 | (nth display-time-load-average | |
384 | (load-average))))) | |
fe6456af RS |
385 | (propertize |
386 | (concat (substring str 0 -2) "." (substring str -2)) | |
b7eb6e8a DL |
387 | 'local-map (make-mode-line-mouse-map |
388 | 'mouse-2 'display-time-next-load-average) | |
3a02b63e | 389 | 'mouse-face 'mode-line-highlight |
b7eb6e8a DL |
390 | 'help-echo (concat |
391 | "System load average for past " | |
392 | (if (= 0 display-time-load-average) | |
393 | "1 minute" | |
394 | (if (= 1 display-time-load-average) | |
395 | "5 minutes" | |
396 | "15 minutes")) | |
397 | "; mouse-2: next")))) | |
fe6456af | 398 | (error "")))) |
c2acf685 SM |
399 | (mail-spool-file (or display-time-mail-file |
400 | (getenv "MAIL") | |
401 | (concat rmail-spool-directory | |
402 | (user-login-name)))) | |
403 | (mail (or (and display-time-mail-function | |
404 | (funcall display-time-mail-function)) | |
cc351ed4 PJ |
405 | (and display-time-mail-directory |
406 | (display-time-mail-check-directory)) | |
c2acf685 SM |
407 | (and (stringp mail-spool-file) |
408 | (or (null display-time-server-down-time) | |
409 | ;; If have been down for 20 min, try again. | |
410 | (> (- (nth 1 now) display-time-server-down-time) | |
411 | 1200) | |
412 | (and (< (nth 1 now) display-time-server-down-time) | |
b7eb6e8a DL |
413 | (> (- (nth 1 now) |
414 | display-time-server-down-time) | |
c2acf685 SM |
415 | -64336))) |
416 | (let ((start-time (current-time))) | |
417 | (prog1 | |
418 | (display-time-file-nonempty-p mail-spool-file) | |
b7eb6e8a DL |
419 | (if (> (- (nth 1 (current-time)) |
420 | (nth 1 start-time)) | |
c2acf685 SM |
421 | 20) |
422 | ;; Record that mail file is not accessible. | |
423 | (setq display-time-server-down-time | |
424 | (nth 1 (current-time))) | |
425 | ;; Record that mail file is accessible. | |
426 | (setq display-time-server-down-time nil))))))) | |
427 | (24-hours (substring time 11 13)) | |
027a4b6b | 428 | (hour (string-to-number 24-hours)) |
c2acf685 SM |
429 | (12-hours (int-to-string (1+ (% (+ hour 11) 12)))) |
430 | (am-pm (if (>= hour 12) "pm" "am")) | |
431 | (minutes (substring time 14 16)) | |
432 | (seconds (substring time 17 19)) | |
433 | (time-zone (car (cdr (current-time-zone now)))) | |
434 | (day (substring time 8 10)) | |
435 | (year (substring time 20 24)) | |
436 | (monthname (substring time 4 7)) | |
437 | (month | |
438 | (cdr | |
439 | (assoc | |
440 | monthname | |
441 | '(("Jan" . "1") ("Feb" . "2") ("Mar" . "3") ("Apr" . "4") | |
442 | ("May" . "5") ("Jun" . "6") ("Jul" . "7") ("Aug" . "8") | |
443 | ("Sep" . "9") ("Oct" . "10") ("Nov" . "11") ("Dec" . "12"))))) | |
444 | (dayname (substring time 0 3))) | |
445 | (setq display-time-string | |
446 | (mapconcat 'eval display-time-string-forms "")) | |
447 | ;; This is inside the let binding, but we are not going to document | |
448 | ;; what variables are available. | |
449 | (run-hooks 'display-time-hook)) | |
450 | (force-mode-line-update)) | |
451 | ||
452 | (defun display-time-file-nonempty-p (file) | |
453 | (and (file-exists-p file) | |
454 | (< 0 (nth 7 (file-attributes (file-chase-links file)))))) | |
455 | ||
57ce63c4 SM |
456 | ;;;###autoload |
457 | (define-minor-mode display-time-mode | |
458 | "Toggle display of time, load level, and mail flag in mode lines. | |
459 | With a numeric arg, enable this display if arg is positive. | |
460 | ||
461 | When this display is enabled, it updates automatically every minute. | |
462 | If `display-time-day-and-date' is non-nil, the current day and date | |
463 | are displayed as well. | |
464 | This runs the normal hook `display-time-hook' after each update." | |
bb7a71c5 | 465 | :global t :group 'display-time |
fe6456af RS |
466 | (and display-time-timer (cancel-timer display-time-timer)) |
467 | (setq display-time-timer nil) | |
468 | (setq display-time-string "") | |
469 | (or global-mode-string (setq global-mode-string '(""))) | |
470 | (setq display-time-load-average display-time-default-load-average) | |
471 | (if display-time-mode | |
472 | (progn | |
473 | (or (memq 'display-time-string global-mode-string) | |
474 | (setq global-mode-string | |
475 | (append global-mode-string '(display-time-string)))) | |
476 | ;; Set up the time timer. | |
477 | (setq display-time-timer | |
478 | (run-at-time t display-time-interval | |
479 | 'display-time-event-handler)) | |
480 | ;; Make the time appear right away. | |
481 | (display-time-update) | |
482 | ;; When you get new mail, clear "Mail" from the mode line. | |
483 | (add-hook 'rmail-after-get-new-mail-hook | |
484 | 'display-time-event-handler)) | |
485 | (remove-hook 'rmail-after-get-new-mail-hook | |
486 | 'display-time-event-handler))) | |
c2acf685 | 487 | |
aff2ba04 RS |
488 | |
489 | (defun display-time-world-mode () | |
490 | "Major mode for buffer that displays times in various time zones. | |
491 | See `display-time-world'." | |
492 | (interactive) | |
493 | (kill-all-local-variables) | |
494 | (setq | |
495 | major-mode 'display-time-world-mode | |
496 | mode-name "World clock") | |
497 | (use-local-map display-time-world-mode-map)) | |
498 | ||
499 | (defun display-time-world-display (alist) | |
500 | "Replace current buffer text with times in various zones, based on ALIST." | |
501 | (let ((inhibit-read-only t) | |
502 | (buffer-undo-list t)) | |
503 | (erase-buffer) | |
504 | (let ((max-width 0) | |
505 | (result ())) | |
506 | (unwind-protect | |
507 | (dolist (zone alist) | |
508 | (let* ((label (cadr zone)) | |
509 | (width (string-width label))) | |
510 | (set-time-zone-rule (car zone)) | |
511 | (setq result | |
512 | (append result | |
513 | (list | |
514 | label width | |
515 | (format-time-string display-time-world-time-format)))) | |
516 | (when (> width max-width) | |
517 | (setq max-width width)))) | |
518 | (set-time-zone-rule nil)) | |
519 | (while result | |
520 | (insert (pop result) | |
521 | (make-string (1+ (- max-width (pop result))) ?\s) | |
522 | (pop result) "\n"))) | |
523 | (delete-backward-char 1))) | |
524 | ||
525 | ;;;###autoload | |
526 | (defun display-time-world () | |
527 | "Enable updating display of times in various time zones. | |
528 | `display-time-world-list' specifies the zones. | |
529 | To turn off the world time display, go to that window and type `q'." | |
530 | (interactive) | |
531 | (when (and display-time-world-timer-enable | |
532 | (not (get-buffer display-time-world-buffer-name))) | |
533 | (run-at-time t display-time-world-timer-second 'display-time-world-timer)) | |
534 | (with-current-buffer (get-buffer-create display-time-world-buffer-name) | |
535 | (display-time-world-display display-time-world-list)) | |
536 | (pop-to-buffer display-time-world-buffer-name) | |
537 | (fit-window-to-buffer) | |
538 | (display-time-world-mode)) | |
539 | ||
540 | (defun display-time-world-timer () | |
541 | (if (get-buffer display-time-world-buffer-name) | |
542 | (with-current-buffer (get-buffer display-time-world-buffer-name) | |
543 | (display-time-world-display display-time-world-list)) | |
544 | ;; cancel timer | |
545 | (let ((list timer-list)) | |
546 | (while list | |
547 | (let ((elt (pop list))) | |
548 | (when (equal (symbol-name (aref elt 5)) "display-time-world-timer") | |
549 | (cancel-timer elt))))))) | |
550 | ||
2736785a GM |
551 | \f |
552 | ;;;###autoload | |
553 | (defun emacs-uptime () | |
554 | "Return a string giving the uptime of this instance of Emacs." | |
555 | (interactive) | |
556 | (let ((str | |
557 | (format-seconds "%Y, %D, %H, %M, %S" | |
558 | (time-to-seconds | |
559 | (time-subtract (current-time) emacs-startup-time)) | |
560 | t))) | |
561 | (if (interactive-p) | |
562 | (message "%s" str) | |
563 | str))) | |
564 | ||
c2acf685 SM |
565 | (provide 'time) |
566 | ||
ab5796a9 | 567 | ;;; arch-tag: b9c1623f-b5cb-48e4-b650-482a4d23c5a6 |
c2acf685 | 568 | ;;; time.el ends here |