1 ;;; gnus-xmas.el --- Gnus functions for XEmacs
2 ;; Copyright (C) 1995,96 Free Software Foundation, Inc.
4 ;; Author: Lars Magne Ingebrigtsen <larsi@ifi.uio.no>
7 ;; This file is part of GNU Emacs.
9 ;; GNU Emacs is free software; you can redistribute it and/or modify
10 ;; it under the terms of the GNU General Public License as published by
11 ;; the Free Software Foundation; either version 2, or (at your option)
14 ;; GNU Emacs is distributed in the hope that it will be useful,
15 ;; but WITHOUT ANY WARRANTY; without even the implied warranty of
16 ;; MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
17 ;; GNU General Public License for more details.
19 ;; You should have received a copy of the GNU General Public License
20 ;; along with GNU Emacs; see the file COPYING. If not, write to
21 ;; the Free Software Foundation, 675 Mass Ave, Cambridge, MA 02139, USA.
28 (defvar menu-bar-mode t)
30 (defvar gnus-xmas-glyph-directory nil
31 "*Directory where Gnus logos and icons are located.
32 If this variable is nil, Gnus will try to locate the directory
35 ;;; Internal variables.
37 (defvar gnus-xmas-logo (make-glyph (make-specifier 'image)))
39 ;; Don't warn about these undefined variables.
41 (defvar gnus-group-mode-hook)
42 (defvar gnus-summary-mode-hook)
43 (defvar gnus-article-mode-hook)
46 (defvar gnus-active-hashtb)
47 (defvar gnus-article-buffer)
48 (defvar gnus-auto-center-summary)
49 (defvar gnus-buffer-list)
50 (defvar gnus-current-headers)
51 (defvar gnus-level-killed)
52 (defvar gnus-level-zombie)
53 (defvar gnus-newsgroup-bookmarks)
54 (defvar gnus-newsgroup-dependencies)
55 (defvar gnus-newsgroup-selected-overlay)
56 (defvar gnus-newsrc-hashtb)
57 (defvar gnus-read-mark)
58 (defvar gnus-refer-article-method)
59 (defvar gnus-reffed-article-number)
60 (defvar gnus-unread-mark)
62 (defvar gnus-view-pseudos)
63 (defvar gnus-view-pseudos-separately)
65 (defvar gnus-zombie-list)
66 ;;defined in gnus-msg.el
67 (defvar gnus-article-copy)
68 (defvar gnus-check-before-posting)
69 ;;defined in gnus-vis.el
70 (defvar gnus-article-button-face)
71 (defvar gnus-article-mouse-face)
72 (defvar gnus-summary-selected-face)
73 (defvar gnus-group-reading-menu)
74 (defvar gnus-group-group-menu)
75 (defvar gnus-group-misc-menu)
76 (defvar gnus-summary-article-menu)
77 (defvar gnus-summary-thread-menu)
78 (defvar gnus-summary-misc-menu)
79 (defvar gnus-summary-post-menu)
80 (defvar gnus-summary-kill-menu)
81 (defvar gnus-article-article-menu)
82 (defvar gnus-article-treatment-menu)
84 (defvar standard-display-table)
86 (defun gnus-xmas-set-text-properties (start end props &optional buffer)
87 "You should NEVER use this function. It is ideologically blasphemous.
88 It is provided only to ease porting of broken FSF Emacs programs."
89 (if (and (stringp buffer) (not (setq buffer (get-buffer buffer))))
91 (map-extents (lambda (extent ignored)
92 (remove-text-properties
94 (list (extent-property extent 'text-prop) nil)
96 buffer start end nil nil 'text-prop)
97 (add-text-properties start end props buffer)))
99 (defun gnus-xmas-highlight-selected-summary ()
100 ;; Highlight selected article in summary buffer
101 (if gnus-summary-selected-face
103 (if gnus-newsgroup-selected-overlay
104 (delete-extent gnus-newsgroup-selected-overlay))
105 (setq gnus-newsgroup-selected-overlay
106 (make-extent (gnus-point-at-bol) (gnus-point-at-eol)))
107 (set-extent-face gnus-newsgroup-selected-overlay
108 gnus-summary-selected-face))))
110 (defun gnus-xmas-summary-recenter ()
111 (let* ((top (cond ((< (window-height) 4) 0)
112 ((< (window-height) 7) 1)
114 (height (- (window-height) 2))
115 (bottom (save-excursion (goto-char (point-max))
116 (forward-line (- height))
118 (window (get-buffer-window (current-buffer))))
120 ;; The user has to want it,
121 gnus-auto-center-summary
122 ;; the article buffer must be displayed,
123 (get-buffer-window gnus-article-buffer)
124 ;; Set the window start to either `bottom', which is the biggest
125 ;; possible valid number, or the second line from the top,
126 ;; whichever is the least.
128 window (min bottom (save-excursion
129 (forward-line (- top)) (point)))))))
131 (defun gnus-xmas-group-remove-excess-properties ()
133 (beg (progn (forward-line -1) (point))))
134 (remove-text-properties (1+ beg) end '(gnus-group nil))
135 (remove-text-properties
137 '(gnus-topic nil gnus-topic-level nil gnus-topic-visible nil))
140 (defun gnus-xmas-copy-article-buffer (&optional article-buffer)
141 (setq gnus-article-copy (get-buffer-create " *gnus article copy*"))
142 (buffer-disable-undo gnus-article-copy)
143 (or (memq gnus-article-copy gnus-buffer-list)
144 (setq gnus-buffer-list (cons gnus-article-copy gnus-buffer-list)))
145 (let ((article-buffer (or article-buffer gnus-article-buffer))
147 (if (and (get-buffer article-buffer)
148 (buffer-name (get-buffer article-buffer)))
150 (set-buffer article-buffer)
152 (setq buf (buffer-substring (point-min) (point-max)))
153 (set-buffer gnus-article-copy)
155 (insert (format "%s" buf))))))
157 (defun gnus-xmas-article-push-button (event)
158 "Check text under the mouse pointer for a callback function.
159 If the text under the mouse pointer has a `gnus-callback' property,
160 call it with the value of the `gnus-data' text property."
162 (set-buffer (window-buffer (event-window event)))
163 (let* ((pos (event-closest-point event))
164 (data (get-text-property pos 'gnus-data))
165 (fun (get-text-property pos 'gnus-callback)))
166 (if fun (funcall fun data))))
168 (defun gnus-xmas-move-overlay (extent start end &optional buffer)
169 (set-extent-endpoints extent start end))
171 ;; Fixed by Christopher Davis <ckd@loiosh.kei.com>.
172 (defun gnus-xmas-article-add-button (from to fun &optional data)
173 "Create a button between FROM and TO with callback FUN and data DATA."
174 (and gnus-article-button-face
175 (gnus-overlay-put (gnus-make-overlay from to)
176 'face gnus-article-button-face))
180 (and gnus-article-mouse-face
181 (list 'mouse-face gnus-article-mouse-face))
182 (list 'gnus-callback fun)
183 (and data (list 'gnus-data data))
184 (list 'highlight t))))
186 (defun gnus-xmas-window-top-edge (&optional window)
187 (nth 1 (window-pixel-edges window)))
189 ;; Select the lowest window on the frame.
190 (defun gnus-xmas-appt-select-lowest-window ()
191 (let* ((lowest-window (selected-window))
192 (bottom-edge (car (cdr (cdr (cdr (window-pixel-edges))))))
193 (last-window (previous-window))
196 (let* ((this-window (next-window))
197 (next-bottom-edge (car (cdr (cdr (cdr
200 (if (< bottom-edge next-bottom-edge)
202 (setq bottom-edge next-bottom-edge)
203 (setq lowest-window this-window)))
205 (select-window this-window)
206 (if (eq last-window this-window)
208 (select-window lowest-window)
209 (setq window-search nil)))))))
211 (defun gnus-xmas-group-menu-add ()
212 (easy-menu-add gnus-group-reading-menu)
213 (easy-menu-add gnus-group-group-menu)
214 (easy-menu-add gnus-group-misc-menu))
216 (defun gnus-xmas-summary-menu-add ()
217 (easy-menu-add gnus-summary-article-menu)
218 (easy-menu-add gnus-summary-thread-menu)
219 (easy-menu-add gnus-summary-misc-menu)
220 (easy-menu-add gnus-summary-post-menu)
221 (easy-menu-add gnus-summary-kill-menu))
223 (defun gnus-xmas-article-menu-add ()
224 (easy-menu-add gnus-article-article-menu)
225 (easy-menu-add gnus-article-treatment-menu))
227 (defun gnus-xmas-read-event-char ()
228 "Get the next event."
229 (let ((event (next-event)))
230 ;; We junk all non-key events. Is this naughty?
231 (while (not (key-press-event-p event))
232 (setq event (next-event)))
233 (cons (and (key-press-event-p event)
234 (numberp (event-key event))
235 (event-to-character event))
238 (defun gnus-xmas-seconds-since-epoch (date)
239 "Return a floating point number that says how many seconds have lapsed between Jan 1 12:00:00 1970 and DATE."
240 (let* ((tdate (mapcar (lambda (ti) (and ti (string-to-int ti)))
241 (timezone-parse-date date)))
242 (ttime (mapcar (lambda (ti) (and ti (string-to-int ti)))
244 (aref (timezone-parse-date date) 3))))
245 (edate (mapcar (lambda (ti) (and ti (string-to-int ti)))
246 (timezone-parse-date "Jan 1 12:00:00 1970")))
247 (tday (- (timezone-absolute-from-gregorian
248 (nth 1 tdate) (nth 2 tdate) (nth 0 tdate))
249 (timezone-absolute-from-gregorian
250 (nth 1 edate) (nth 2 edate) (nth 0 edate)))))
253 (* (float (nth 0 ttime)) 60 60)
254 (* (float tday) 60 60 24))))
256 (defun gnus-xmas-define ()
257 (setq gnus-mouse-2 [button2])
259 (or (memq 'underline (list-faces))
260 (and (fboundp 'make-face)
261 (funcall (intern "make-face") 'underline)))
262 ;; Must avoid calling set-face-underline-p directly, because it
263 ;; is a defsubst in emacs19, and will make the .elc files non
265 (or (face-differs-from-default-p 'underline)
266 (funcall (intern "set-face-underline-p") 'underline t))
268 (fset 'gnus-make-overlay 'make-extent)
269 (fset 'gnus-overlay-put 'set-extent-property)
270 (fset 'gnus-move-overlay 'gnus-xmas-move-overlay)
272 (fset 'set-text-properties 'gnus-xmas-set-text-properties)
274 (or (boundp 'standard-display-table) (setq standard-display-table nil))
276 (defvar gnus-mouse-face-prop 'highlight)
278 (unless (fboundp 'encode-time)
279 (defun encode-time (sec minute hour day month year &optional zone)
281 (gnus-xmas-seconds-since-epoch
282 (timezone-make-arpa-date
283 year month day (timezone-make-time-string hour minute sec)
285 (list (floor (/ seconds (expt 2 16)))
286 (round (mod seconds (expt 2 16)))))))
288 (defun gnus-byte-code (func)
289 "Return a form that can be `eval'ed based on FUNC."
290 (let ((fval (symbol-function func)))
291 (if (byte-code-function-p fval)
293 (cons 'progn (cdr (cdr fval))))))
295 ;; Fix by "jeff (j.d.) sparkes" <jsparkes@bnr.ca>.
296 (defvar gnus-display-type (device-class)
297 "A symbol indicating the display Emacs is running under.
298 The symbol should be one of `color', `grayscale' or `mono'. If Emacs
299 guesses this display attribute wrongly, either set this variable in
300 your `~/.emacs' or set the resource `Emacs.displayType' in your
301 `~/.Xdefaults'. See also `gnus-background-mode'.
303 This is a meta-variable that will affect what default values other
304 variables get. You would normally not change this variable, but
305 pounce directly on the real variables themselves.")
308 (or (fboundp 'x-color-values)
309 (fset 'x-color-values
311 (color-instance-rgb-components
312 (make-color-instance color)))))
314 (defvar gnus-background-mode
317 (x-get-resource ".backgroundMode" "BackgroundMode" 'string)
319 (params (frame-parameters)))
320 (cond (bg-resource (intern (downcase bg-resource)))
321 ((and (assq 'background-color params)
322 (< (apply '+ (x-color-values
323 (cdr (assq 'background-color params))))
324 (/ (apply '+ (x-color-values "white")) 3)))
327 "A symbol indicating the Emacs background brightness.
328 The symbol should be one of `light' or `dark'.
329 If Emacs guesses this frame attribute wrongly, either set this variable in
330 your `~/.emacs' or set the resource `Emacs.backgroundMode' in your
332 See also `gnus-display-type'.
334 This is a meta-variable that will affect what default values other
335 variables get. You would normally not change this variable, but
336 pounce directly on the real variables themselves.")
341 (defun gnus-xmas-redefine ()
342 "Redefine lots of Gnus functions for XEmacs."
343 (fset 'gnus-summary-make-display-table (lambda () nil))
344 (fset 'gnus-visual-turn-off-edit-menu 'identity)
345 (fset 'gnus-highlight-selected-summary
346 'gnus-xmas-highlight-selected-summary)
347 (fset 'gnus-summary-recenter 'gnus-xmas-summary-recenter)
348 (fset 'gnus-group-remove-excess-properties
349 'gnus-xmas-group-remove-excess-properties)
350 (fset 'gnus-copy-article-buffer 'gnus-xmas-copy-article-buffer)
351 (fset 'gnus-article-push-button 'gnus-xmas-article-push-button)
352 (fset 'gnus-article-add-button 'gnus-xmas-article-add-button)
353 (fset 'gnus-window-top-edge 'gnus-xmas-window-top-edge)
354 (fset 'set-text-properties 'gnus-xmas-set-text-properties)
355 (fset 'gnus-read-event-char 'gnus-xmas-read-event-char)
356 (fset 'gnus-group-startup-message 'gnus-xmas-group-startup-message)
358 (or (fboundp 'appt-select-lowest-window)
359 (fset 'appt-select-lowest-window
360 'gnus-xmas-appt-select-lowest-window))
362 (add-hook 'gnus-group-mode-hook 'gnus-xmas-group-menu-add)
363 (add-hook 'gnus-summary-mode-hook 'gnus-xmas-summary-menu-add)
364 (add-hook 'gnus-article-mode-hook 'gnus-xmas-article-menu-add)
366 (add-hook 'gnus-group-mode-hook 'gnus-xmas-setup-group-toolbar)
367 (add-hook 'gnus-summary-mode-hook 'gnus-xmas-setup-summary-toolbar))
370 ;;; XEmacs logo and toolbar.
372 (defun gnus-xmas-find-glyph-directory ()
373 (or gnus-xmas-glyph-directory ; We have a dir already...
374 (let ((path load-path)
376 ;; We try to find the dir by looking at the load path,
377 ;; stripping away the last component and adding "etc/".
380 (file-name-directory (directory-file-name (car path)))
382 (if (and (file-exists-p dir)
383 (file-directory-p dir)
384 (file-exists-p (concat dir "gnus-group-exit-icon-up.xpm")))
385 (setq gnus-xmas-glyph-directory dir
387 (setq path (cdr path))))
388 gnus-xmas-glyph-directory)))
390 (defun gnus-xmas-group-startup-message (&optional x y)
391 "Insert startup message in current buffer."
392 ;; Insert the message.
393 (gnus-xmas-find-glyph-directory)
395 (let ((file (and gnus-xmas-glyph-directory
397 (file-name-as-directory gnus-xmas-glyph-directory)
399 (if (and (featurep 'xpm)
400 (not (equal (device-type) 'tty))
401 file (file-exists-p file))
403 (set-glyph-property gnus-xmas-logo 'image file)
404 (set-glyph-image gnus-xmas-logo file 'global 'x)
407 (set-extent-begin-glyph (make-extent (point) (point)) gnus-xmas-logo)
408 (goto-char (point-min))
410 (insert (make-string (/ (max (- (window-width) (or x 35)) 0) 2)
413 (goto-char (point-min))
414 (let* ((pheight (+ 20 (count-lines (point-min) (point-max))))
415 (wheight (window-height))
416 (rest (- wheight pheight)))
417 (insert (make-string (max 0 (* 2 (/ rest 3))) ?\n))))
422 _ ___ __ ___ __ _ ___
442 (gnus-indent-rigidly (point-min) (point-max)
443 (/ (max (- (window-width) (or x 46)) 0) 2))
444 (goto-char (point-min))
446 (let* ((pheight (count-lines (point-min) (point-max)))
447 (wheight (window-height))
448 (rest (- wheight pheight)))
449 (insert (make-string (max 0 (* 2 (/ rest 3))) ?\n))))
451 (goto-char (point-min))
452 (and (search-forward "Praxis" nil t)
453 (put-text-property (match-beginning 0) (match-end 0) 'face 'bold))
454 (goto-char (point-min))
455 (let* ((mode-string (gnus-group-set-mode-line)))
456 (setq mode-line-buffer-identification
457 (list (concat gnus-version (substring (car mode-string) 4))))
458 (set-buffer-modified-p t))))
463 (defvar gnus-use-toolbar 'default-toolbar
464 "*If nil, do not use a toolbar.
465 If it is non-nil, it must be a toolbar. The five legal values are
466 `default-toolbar', `top-toolbar', `bottom-toolbar',
467 `right-toolbar', and `left-toolbar'.")
469 (defvar gnus-group-toolbar
470 '([gnus-group-exit-icon gnus-group-exit t "Exit Gnus"]
471 [gnus-group-kill-group-icon gnus-group-kill-group t "Kill group"]
472 [gnus-group-get-new-news-icon gnus-group-get-new-news t "Get new news"]
473 [gnus-group-get-new-news-this-group-icon
474 gnus-group-get-new-news-this-group t "Get new news in this group"]
475 [gnus-group-catchup-current-icon
476 gnus-group-catchup-current t "Catchup group"]
477 [gnus-group-describe-group-icon
478 gnus-group-describe-group t "Describe group"])
479 "The group buffer toolbar.")
481 (defvar gnus-summary-toolbar
482 '([gnus-summary-post-news-icon
483 gnus-summary-post-news t "Post an article"]
484 [gnus-summary-save-article-file-icon
485 gnus-summary-save-article-file t "Save article in file"]
486 [gnus-summary-save-article-icon
487 gnus-summary-save-article t "Save article"]
488 [gnus-summary-reply-icon
489 gnus-summary-reply t "Mail a reply"]
490 [gnus-summary-reply-with-original-icon
491 gnus-summary-reply-with-original t "Mail a reply and yank the original"]
492 [gnus-summary-followup-icon
493 gnus-summary-followup t "Post a followup"]
494 [gnus-summary-followup-with-original-icon
495 gnus-summary-followup-with-original t
496 "Post a followup and yank the original"]
497 [gnus-uu-decode-uu-icon
498 gnus-uu-decode-uu t "Decode uuencoded articles"]
499 [gnus-uu-post-news-icon
500 gnus-uu-post-news t "Post an uuencoded article"]
501 [gnus-summary-caesar-message-icon
502 gnus-summary-caesar-message t "Rot 13"]
503 [gnus-summary-cancel-article-icon
504 gnus-summary-cancel-article t "Cancel article"])
505 "The summary buffer toolbar.")
507 (defun gnus-xmas-setup-toolbar (bar &optional force)
508 (let ((dir (gnus-xmas-find-glyph-directory))
509 icon up down disabled name)
513 (boundp (aref (car bar) 0)))
516 (setq icon (aref (car bar) 0)
517 name (symbol-name icon)
519 (setq up (concat dir name "-up.xpm"))
520 (setq down (concat dir name "-down.xpm"))
521 (setq disabled (concat dir name "-disabled.xpm"))
522 (if (not (file-exists-p up))
524 (set icon (toolbar-make-button-list
525 up (and (file-exists-p down) down)
526 (and (file-exists-p disabled) disabled)))))
529 (defun gnus-xmas-setup-group-toolbar ()
530 (and gnus-use-toolbar
531 (gnus-xmas-setup-toolbar gnus-group-toolbar)
532 (set-specifier (symbol-value gnus-use-toolbar)
533 (cons (current-buffer) gnus-group-toolbar))))
535 (defun gnus-xmas-setup-summary-toolbar ()
536 (and gnus-use-toolbar
537 (gnus-xmas-setup-toolbar gnus-summary-toolbar)
538 (set-specifier (symbol-value gnus-use-toolbar)
539 (cons (current-buffer) gnus-summary-toolbar))))
541 ;;; gnus-xmas.el ends here