Commit | Line | Data |
---|---|---|
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, |
d7a0267c | 4 | ;; 2003, 2004, 2005, 2006, 2007 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") | |
135 | ("BST0BDT" "London") | |
136 | ("CET-1CDT" "Paris") | |
137 | ("IST-5:30IDT" "Bangalore") | |
138 | ("JST-9JDT" "Tokyo")) | |
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 | |
153 | (if (memq 'system-type '(gnu/linux ms-dos)) | |
154 | zoneinfo-style-world-list | |
155 | legacy-style-world-list) | |
156 | "Alist of time zones and places for `display-time-world' to display. | |
aff2ba04 | 157 | Each element has the form (TIMEZONE LABEL). |
dca2168c EZ |
158 | TIMEZONE should be in the format supported by `set-time-zone-rule' on |
159 | your system. See the documentation of `zoneinfo-style-world-list' and | |
160 | \`legacy-style-world-list' for two widely used formats. | |
161 | LABEL is a string to display as the label of that TIMEZONE's time." | |
aff2ba04 RS |
162 | :group 'display-time |
163 | :type '(repeat (list string string)) | |
164 | :version "23.1") | |
165 | ||
658dcd47 | 166 | (defcustom display-time-world-time-format "%A %d %B %R %Z" |
aff2ba04 RS |
167 | "Format of the time displayed, see `format-time-string'." |
168 | :group 'display-time | |
169 | :type 'string | |
170 | :version "23.1") | |
171 | ||
172 | (defcustom display-time-world-buffer-name "*wclock*" | |
173 | "Name of the wclock buffer." | |
174 | :group 'display-time | |
175 | :type 'string | |
176 | :version "23.1") | |
177 | ||
178 | (defcustom display-time-world-timer-enable t | |
179 | "If non-nil, a timer will update the world clock." | |
180 | :group 'display-time | |
181 | :type 'boolean | |
182 | :version "23.1") | |
183 | ||
184 | (defcustom display-time-world-timer-second 60 | |
185 | "Interval in seconds for updating the world clock." | |
186 | :group 'display-time | |
187 | :type 'integer | |
188 | :version "23.1") | |
189 | ||
190 | (defvar display-time-world-mode-map | |
191 | (let ((map (make-sparse-keymap))) | |
192 | (define-key map "q" 'kill-this-buffer) | |
193 | map) | |
194 | "Keymap of Display Time World mode") | |
195 | ||
c2acf685 SM |
196 | ;;;###autoload |
197 | (defun display-time () | |
198 | "Enable display of time, load level, and mail flag in mode lines. | |
199 | This display updates automatically every minute. | |
200 | If `display-time-day-and-date' is non-nil, the current day and date | |
201 | are displayed as well. | |
202 | This runs the normal hook `display-time-hook' after each update." | |
203 | (interactive) | |
204 | (display-time-mode 1)) | |
205 | ||
b7eb6e8a DL |
206 | ;; This business used to be simpler when all mode lines had the same |
207 | ;; face and the image could just be pbm. Now we try to rely on an xpm | |
208 | ;; image with a transparent background. Otherwise, set the background | |
209 | ;; for pbm. | |
210 | ||
211 | (defcustom display-time-mail-face nil | |
c2acf685 | 212 | "Face to use for `display-time-mail-string'. |
b7eb6e8a | 213 | If `display-time-use-mail-icon' is non-nil, the image's |
6bd47b39 JB |
214 | background color is the background of this face. Set this to |
215 | make the mail indicator stand out on a color display." | |
83033a3a | 216 | :group 'mode-line-faces |
c2acf685 | 217 | :group 'display-time |
bf247b6e | 218 | :version "22.1" |
b7eb6e8a | 219 | :type '(choice (const :tag "None" nil) face)) |
c2acf685 SM |
220 | |
221 | (defvar display-time-mail-icon | |
cc351ed4 | 222 | (find-image '((:type xpm :file "letter.xpm" :ascent center) |
b7eb6e8a DL |
223 | (:type pbm :file "letter.pbm" :ascent center))) |
224 | "Image specification to offer as the mail indicator on a graphic display. | |
225 | See `display-time-use-mail-icon' and `display-time-mail-face'.") | |
c2acf685 | 226 | |
b7eb6e8a | 227 | ;; Fixme: Default to icon on graphical display? |
c2acf685 | 228 | (defcustom display-time-use-mail-icon nil |
d7baab9c | 229 | "Non-nil means use an icon as mail indicator on a graphic display. |
b7eb6e8a DL |
230 | Otherwise use `display-time-mail-string'. The icon may consume less |
231 | of the mode line. It is specified by `display-time-mail-icon'." | |
c2acf685 SM |
232 | :group 'display-time |
233 | :type 'boolean) | |
234 | ||
b7eb6e8a DL |
235 | ;; Fixme: maybe default to the character if we can display Unicode. |
236 | (defcustom display-time-mail-string "Mail" | |
237 | "String to use as the mail indicator in `display-time-string-forms'. | |
238 | This can use the Unicode letter character if you can display it." | |
239 | :group 'display-time | |
bf247b6e | 240 | :version "22.1" |
b7eb6e8a DL |
241 | :type '(choice (const "Mail") |
242 | ;; Use :tag here because the Lucid menu won't display | |
243 | ;; multibyte text. | |
244 | (const :tag "Unicode letter character" "✉") | |
245 | string)) | |
246 | ||
c2acf685 | 247 | (defcustom display-time-format nil |
d7baab9c | 248 | "*String specifying format for displaying the time in the mode line. |
c2acf685 SM |
249 | See the function `format-time-string' for an explanation of |
250 | how to write this string. If this is nil, the defaults | |
251 | depend on `display-time-day-and-date' and `display-time-24hr-format'." | |
252 | :type '(choice (const :tag "Default" nil) | |
253 | string) | |
254 | :group 'display-time) | |
255 | ||
256 | (defcustom display-time-string-forms | |
257 | '((if (and (not display-time-format) display-time-day-and-date) | |
258 | (format-time-string "%a %b %e " now) | |
259 | "") | |
e93b2f39 SM |
260 | (propertize |
261 | (format-time-string (or display-time-format | |
262 | (if display-time-24hr-format "%H:%M" "%-I:%M%p")) | |
263 | now) | |
ef3e9175 | 264 | 'help-echo (format-time-string "%a %b %e, %Y" now)) |
c2acf685 SM |
265 | load |
266 | (if mail | |
267 | ;; Build the string every time to act on customization. | |
b7eb6e8a DL |
268 | ;; :set-after doesn't help for `customize-option'. I think it |
269 | ;; should. | |
270 | (concat | |
271 | " " | |
272 | (propertize | |
273 | display-time-mail-string | |
274 | 'display `(when (and display-time-use-mail-icon | |
275 | (display-graphic-p)) | |
276 | ,@display-time-mail-icon | |
277 | ,@(if (and display-time-mail-face | |
278 | (memq (plist-get (cdr display-time-mail-icon) | |
279 | :type) | |
280 | '(pbm xbm))) | |
281 | (let ((bg (face-attribute display-time-mail-face | |
282 | :background))) | |
283 | (if (stringp bg) | |
284 | (list :background bg))))) | |
285 | 'face display-time-mail-face | |
286 | 'help-echo "You have new mail; mouse-2: Read mail" | |
3a02b63e | 287 | 'mouse-face 'mode-line-highlight |
b7eb6e8a DL |
288 | 'local-map (make-mode-line-mouse-map 'mouse-2 |
289 | read-mail-command))) | |
c2acf685 | 290 | "")) |
d7baab9c | 291 | "*List of expressions governing display of the time in the mode line. |
c2acf685 SM |
292 | For most purposes, you can control the time format using `display-time-format' |
293 | which is a more standard interface. | |
294 | ||
295 | This expression is a list of expressions that can involve the keywords | |
296 | `load', `day', `month', and `year', `12-hours', `24-hours', `minutes', | |
297 | `seconds', all numbers in string form, and `monthname', `dayname', `am-pm', | |
298 | and `time-zone' all alphabetic strings, and `mail' a true/nil value. | |
299 | ||
300 | For example, the form | |
301 | ||
302 | '((substring year -2) \"/\" month \"/\" day | |
303 | \" \" 24-hours \":\" minutes \":\" seconds | |
304 | (if time-zone \" (\") time-zone (if time-zone \")\") | |
305 | (if mail \" Mail\" \"\")) | |
306 | ||
307 | would give mode line times like `94/12/30 21:07:48 (UTC)'." | |
308 | :type 'sexp | |
309 | :group 'display-time) | |
310 | ||
311 | (defun display-time-event-handler () | |
312 | (display-time-update) | |
313 | ;; Do redisplay right now, if no input pending. | |
314 | (sit-for 0) | |
315 | (let* ((current (current-time)) | |
316 | (timer display-time-timer) | |
317 | ;; Compute the time when this timer will run again, next. | |
318 | (next-time (timer-relative-time | |
319 | (list (aref timer 1) (aref timer 2) (aref timer 3)) | |
320 | (* 5 (aref timer 4)) 0))) | |
321 | ;; If the activation time is far in the past, | |
322 | ;; skip executions until we reach a time in the future. | |
323 | ;; This avoids a long pause if Emacs has been suspended for hours. | |
324 | (or (> (nth 0 next-time) (nth 0 current)) | |
325 | (and (= (nth 0 next-time) (nth 0 current)) | |
326 | (> (nth 1 next-time) (nth 1 current))) | |
327 | (and (= (nth 0 next-time) (nth 0 current)) | |
328 | (= (nth 1 next-time) (nth 1 current)) | |
329 | (> (nth 2 next-time) (nth 2 current))) | |
330 | (progn | |
331 | (timer-set-time timer (timer-next-integral-multiple-of-time | |
332 | current display-time-interval) | |
333 | display-time-interval) | |
334 | (timer-activate timer))))) | |
335 | ||
4b05e68d PJ |
336 | (defun display-time-next-load-average () |
337 | (interactive) | |
338 | (if (= 3 (setq display-time-load-average (1+ display-time-load-average))) | |
339 | (setq display-time-load-average 0)) | |
340 | (display-time-update) | |
341 | (sit-for 0)) | |
342 | ||
cc351ed4 PJ |
343 | (defun display-time-mail-check-directory () |
344 | (let ((mail-files (directory-files display-time-mail-directory t)) | |
345 | (size 0)) | |
346 | (while (and mail-files (= size 0)) | |
347 | ;; Count size of regular files only. | |
348 | (setq size (+ size (or (and (file-regular-p (car mail-files)) | |
349 | (nth 7 (file-attributes (car mail-files)))) | |
350 | 0))) | |
351 | (setq mail-files (cdr mail-files))) | |
352 | (if (> size 0) | |
353 | size | |
354 | nil))) | |
355 | ||
c2acf685 | 356 | (defun display-time-update () |
b7eb6e8a DL |
357 | "Update the display-time info for the mode line. |
358 | However, don't redisplay right now. | |
359 | ||
360 | This is used for things like Rmail `g' that want to force an | |
361 | update which can wait for the next redisplay." | |
c2acf685 SM |
362 | (let* ((now (current-time)) |
363 | (time (current-time-string now)) | |
fe6456af RS |
364 | (load (if (null display-time-load-average) |
365 | "" | |
366 | (condition-case () | |
367 | ;; Do not show values less than | |
368 | ;; `display-time-load-average-threshold'. | |
369 | (if (> (* display-time-load-average-threshold 100) | |
370 | (nth display-time-load-average (load-average))) | |
371 | "" | |
372 | ;; The load average number is mysterious, so | |
373 | ;; provide some help. | |
b7eb6e8a DL |
374 | (let ((str (format " %03d" |
375 | (nth display-time-load-average | |
376 | (load-average))))) | |
fe6456af RS |
377 | (propertize |
378 | (concat (substring str 0 -2) "." (substring str -2)) | |
b7eb6e8a DL |
379 | 'local-map (make-mode-line-mouse-map |
380 | 'mouse-2 'display-time-next-load-average) | |
3a02b63e | 381 | 'mouse-face 'mode-line-highlight |
b7eb6e8a DL |
382 | 'help-echo (concat |
383 | "System load average for past " | |
384 | (if (= 0 display-time-load-average) | |
385 | "1 minute" | |
386 | (if (= 1 display-time-load-average) | |
387 | "5 minutes" | |
388 | "15 minutes")) | |
389 | "; mouse-2: next")))) | |
fe6456af | 390 | (error "")))) |
c2acf685 SM |
391 | (mail-spool-file (or display-time-mail-file |
392 | (getenv "MAIL") | |
393 | (concat rmail-spool-directory | |
394 | (user-login-name)))) | |
395 | (mail (or (and display-time-mail-function | |
396 | (funcall display-time-mail-function)) | |
cc351ed4 PJ |
397 | (and display-time-mail-directory |
398 | (display-time-mail-check-directory)) | |
c2acf685 SM |
399 | (and (stringp mail-spool-file) |
400 | (or (null display-time-server-down-time) | |
401 | ;; If have been down for 20 min, try again. | |
402 | (> (- (nth 1 now) display-time-server-down-time) | |
403 | 1200) | |
404 | (and (< (nth 1 now) display-time-server-down-time) | |
b7eb6e8a DL |
405 | (> (- (nth 1 now) |
406 | display-time-server-down-time) | |
c2acf685 SM |
407 | -64336))) |
408 | (let ((start-time (current-time))) | |
409 | (prog1 | |
410 | (display-time-file-nonempty-p mail-spool-file) | |
b7eb6e8a DL |
411 | (if (> (- (nth 1 (current-time)) |
412 | (nth 1 start-time)) | |
c2acf685 SM |
413 | 20) |
414 | ;; Record that mail file is not accessible. | |
415 | (setq display-time-server-down-time | |
416 | (nth 1 (current-time))) | |
417 | ;; Record that mail file is accessible. | |
418 | (setq display-time-server-down-time nil))))))) | |
419 | (24-hours (substring time 11 13)) | |
027a4b6b | 420 | (hour (string-to-number 24-hours)) |
c2acf685 SM |
421 | (12-hours (int-to-string (1+ (% (+ hour 11) 12)))) |
422 | (am-pm (if (>= hour 12) "pm" "am")) | |
423 | (minutes (substring time 14 16)) | |
424 | (seconds (substring time 17 19)) | |
425 | (time-zone (car (cdr (current-time-zone now)))) | |
426 | (day (substring time 8 10)) | |
427 | (year (substring time 20 24)) | |
428 | (monthname (substring time 4 7)) | |
429 | (month | |
430 | (cdr | |
431 | (assoc | |
432 | monthname | |
433 | '(("Jan" . "1") ("Feb" . "2") ("Mar" . "3") ("Apr" . "4") | |
434 | ("May" . "5") ("Jun" . "6") ("Jul" . "7") ("Aug" . "8") | |
435 | ("Sep" . "9") ("Oct" . "10") ("Nov" . "11") ("Dec" . "12"))))) | |
436 | (dayname (substring time 0 3))) | |
437 | (setq display-time-string | |
438 | (mapconcat 'eval display-time-string-forms "")) | |
439 | ;; This is inside the let binding, but we are not going to document | |
440 | ;; what variables are available. | |
441 | (run-hooks 'display-time-hook)) | |
442 | (force-mode-line-update)) | |
443 | ||
444 | (defun display-time-file-nonempty-p (file) | |
445 | (and (file-exists-p file) | |
446 | (< 0 (nth 7 (file-attributes (file-chase-links file)))))) | |
447 | ||
57ce63c4 SM |
448 | ;;;###autoload |
449 | (define-minor-mode display-time-mode | |
450 | "Toggle display of time, load level, and mail flag in mode lines. | |
451 | With a numeric arg, enable this display if arg is positive. | |
452 | ||
453 | When this display is enabled, it updates automatically every minute. | |
454 | If `display-time-day-and-date' is non-nil, the current day and date | |
455 | are displayed as well. | |
456 | This runs the normal hook `display-time-hook' after each update." | |
bb7a71c5 | 457 | :global t :group 'display-time |
fe6456af RS |
458 | (and display-time-timer (cancel-timer display-time-timer)) |
459 | (setq display-time-timer nil) | |
460 | (setq display-time-string "") | |
461 | (or global-mode-string (setq global-mode-string '(""))) | |
462 | (setq display-time-load-average display-time-default-load-average) | |
463 | (if display-time-mode | |
464 | (progn | |
465 | (or (memq 'display-time-string global-mode-string) | |
466 | (setq global-mode-string | |
467 | (append global-mode-string '(display-time-string)))) | |
468 | ;; Set up the time timer. | |
469 | (setq display-time-timer | |
470 | (run-at-time t display-time-interval | |
471 | 'display-time-event-handler)) | |
472 | ;; Make the time appear right away. | |
473 | (display-time-update) | |
474 | ;; When you get new mail, clear "Mail" from the mode line. | |
475 | (add-hook 'rmail-after-get-new-mail-hook | |
476 | 'display-time-event-handler)) | |
477 | (remove-hook 'rmail-after-get-new-mail-hook | |
478 | 'display-time-event-handler))) | |
c2acf685 | 479 | |
aff2ba04 RS |
480 | |
481 | (defun display-time-world-mode () | |
482 | "Major mode for buffer that displays times in various time zones. | |
483 | See `display-time-world'." | |
484 | (interactive) | |
485 | (kill-all-local-variables) | |
486 | (setq | |
487 | major-mode 'display-time-world-mode | |
488 | mode-name "World clock") | |
489 | (use-local-map display-time-world-mode-map)) | |
490 | ||
491 | (defun display-time-world-display (alist) | |
492 | "Replace current buffer text with times in various zones, based on ALIST." | |
493 | (let ((inhibit-read-only t) | |
494 | (buffer-undo-list t)) | |
495 | (erase-buffer) | |
496 | (let ((max-width 0) | |
497 | (result ())) | |
498 | (unwind-protect | |
499 | (dolist (zone alist) | |
500 | (let* ((label (cadr zone)) | |
501 | (width (string-width label))) | |
502 | (set-time-zone-rule (car zone)) | |
503 | (setq result | |
504 | (append result | |
505 | (list | |
506 | label width | |
507 | (format-time-string display-time-world-time-format)))) | |
508 | (when (> width max-width) | |
509 | (setq max-width width)))) | |
510 | (set-time-zone-rule nil)) | |
511 | (while result | |
512 | (insert (pop result) | |
513 | (make-string (1+ (- max-width (pop result))) ?\s) | |
514 | (pop result) "\n"))) | |
515 | (delete-backward-char 1))) | |
516 | ||
517 | ;;;###autoload | |
518 | (defun display-time-world () | |
519 | "Enable updating display of times in various time zones. | |
520 | `display-time-world-list' specifies the zones. | |
521 | To turn off the world time display, go to that window and type `q'." | |
522 | (interactive) | |
523 | (when (and display-time-world-timer-enable | |
524 | (not (get-buffer display-time-world-buffer-name))) | |
525 | (run-at-time t display-time-world-timer-second 'display-time-world-timer)) | |
526 | (with-current-buffer (get-buffer-create display-time-world-buffer-name) | |
527 | (display-time-world-display display-time-world-list)) | |
528 | (pop-to-buffer display-time-world-buffer-name) | |
529 | (fit-window-to-buffer) | |
530 | (display-time-world-mode)) | |
531 | ||
532 | (defun display-time-world-timer () | |
533 | (if (get-buffer display-time-world-buffer-name) | |
534 | (with-current-buffer (get-buffer display-time-world-buffer-name) | |
535 | (display-time-world-display display-time-world-list)) | |
536 | ;; cancel timer | |
537 | (let ((list timer-list)) | |
538 | (while list | |
539 | (let ((elt (pop list))) | |
540 | (when (equal (symbol-name (aref elt 5)) "display-time-world-timer") | |
541 | (cancel-timer elt))))))) | |
542 | ||
c2acf685 SM |
543 | (provide 'time) |
544 | ||
ab5796a9 | 545 | ;;; arch-tag: b9c1623f-b5cb-48e4-b650-482a4d23c5a6 |
c2acf685 | 546 | ;;; time.el ends here |