1 ;;; gnus-xmas.el --- Gnus functions for XEmacs
2 ;; Copyright (C) 1995 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-even-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-define ()
239 (setq gnus-mouse-2 [button2])
241 (or (memq 'underline (list-faces))
242 (and (fboundp 'make-face)
243 (funcall (intern "make-face") 'underline)))
244 ;; Must avoid calling set-face-underline-p directly, because it
245 ;; is a defsubst in emacs19, and will make the .elc files non
247 (or (face-differs-from-default-p 'underline)
248 (funcall (intern "set-face-underline-p") 'underline t))
250 (fset 'gnus-make-overlay 'make-extent)
251 (fset 'gnus-overlay-put 'set-extent-property)
252 (fset 'gnus-move-overlay 'gnus-xmas-move-overlay)
254 (fset 'set-text-properties 'gnus-xmas-set-text-properties)
256 (or (boundp 'standard-display-table) (setq standard-display-table nil))
258 (defvar gnus-mouse-face-prop 'highlight)
260 (defun gnus-byte-code (func)
261 "Return a form that can be `eval'ed based on FUNC."
262 (let ((fval (symbol-function func)))
263 (if (byte-code-function-p fval)
265 (cons 'progn (cdr (cdr fval))))))
267 ;; Fix by "jeff (j.d.) sparkes" <jsparkes@bnr.ca>.
268 (defvar gnus-display-type (device-class)
269 "A symbol indicating the display Emacs is running under.
270 The symbol should be one of `color', `grayscale' or `mono'. If Emacs
271 guesses this display attribute wrongly, either set this variable in
272 your `~/.emacs' or set the resource `Emacs.displayType' in your
273 `~/.Xdefaults'. See also `gnus-background-mode'.
275 This is a meta-variable that will affect what default values other
276 variables get. You would normally not change this variable, but
277 pounce directly on the real variables themselves.")
280 (or (fboundp 'x-color-values)
281 (fset 'x-color-values
283 (color-instance-rgb-components
284 (make-color-instance color)))))
286 (defvar gnus-background-mode
289 (x-get-resource ".backgroundMode" "BackgroundMode" 'string)
291 (params (frame-parameters)))
292 (cond (bg-resource (intern (downcase bg-resource)))
293 ((and (assq 'background-color params)
294 (< (apply '+ (x-color-values
295 (cdr (assq 'background-color params))))
296 (/ (apply '+ (x-color-values "white")) 3)))
299 "A symbol indicating the Emacs background brightness.
300 The symbol should be one of `light' or `dark'.
301 If Emacs guesses this frame attribute wrongly, either set this variable in
302 your `~/.emacs' or set the resource `Emacs.backgroundMode' in your
304 See also `gnus-display-type'.
306 This is a meta-variable that will affect what default values other
307 variables get. You would normally not change this variable, but
308 pounce directly on the real variables themselves.")
313 (defun gnus-xmas-redefine ()
314 "Redefine lots of Gnus functions for XEmacs."
315 (fset 'gnus-summary-make-display-table (lambda () nil))
316 (fset 'gnus-visual-turn-off-edit-menu 'identity)
317 (fset 'gnus-highlight-selected-summary
318 'gnus-xmas-highlight-selected-summary)
319 (fset 'gnus-summary-recenter 'gnus-xmas-summary-recenter)
320 (fset 'gnus-group-remove-excess-properties
321 'gnus-xmas-group-remove-excess-properties)
322 (fset 'gnus-copy-article-buffer 'gnus-xmas-copy-article-buffer)
323 (fset 'gnus-article-push-button 'gnus-xmas-article-push-button)
324 (fset 'gnus-article-add-button 'gnus-xmas-article-add-button)
325 (fset 'gnus-window-top-edge 'gnus-xmas-window-top-edge)
326 (fset 'set-text-properties 'gnus-xmas-set-text-properties)
327 (fset 'gnus-read-event-char 'gnus-xmas-read-event-char)
328 (fset 'gnus-group-startup-message 'gnus-xmas-group-startup-message)
330 (or (fboundp 'appt-select-lowest-window)
331 (fset 'appt-select-lowest-window
332 'gnus-xmas-appt-select-lowest-window))
334 (add-hook 'gnus-group-mode-hook 'gnus-xmas-group-menu-add)
335 (add-hook 'gnus-summary-mode-hook 'gnus-xmas-summary-menu-add)
336 (add-hook 'gnus-article-mode-hook 'gnus-xmas-article-menu-add)
338 (add-hook 'gnus-group-mode-hook 'gnus-xmas-setup-group-toolbar)
339 (add-hook 'gnus-summary-mode-hook 'gnus-xmas-setup-summary-toolbar))
342 ;;; XEmacs logo and toolbar.
344 (defun gnus-xmas-find-glyph-directory ()
345 (or gnus-xmas-glyph-directory ; We have a dir already...
346 (let ((path load-path)
348 ;; We try to find the dir by looking at the load path,
349 ;; stripping away the last component and adding "etc/".
352 (file-name-directory (directory-file-name (car path)))
354 (if (and (file-exists-p dir)
355 (file-directory-p dir)
356 (file-exists-p (concat dir "gnus-group-exit-icon-up.xpm")))
357 (setq gnus-xmas-glyph-directory dir
359 (setq path (cdr path))))
360 gnus-xmas-glyph-directory)))
362 (defun gnus-xmas-group-startup-message (&optional x y)
363 "Insert startup message in current buffer."
364 ;; Insert the message.
365 (gnus-xmas-find-glyph-directory)
367 (let ((file (and gnus-xmas-glyph-directory
369 (file-name-as-directory gnus-xmas-glyph-directory)
371 (if (and (featurep 'xpm)
372 (not (equal (device-type) 'tty))
373 file (file-exists-p file))
375 (set-glyph-property gnus-xmas-logo 'image file)
376 (set-glyph-image gnus-xmas-logo file 'global 'x)
379 (set-extent-begin-glyph (make-extent (point) (point)) gnus-xmas-logo)
380 (goto-char (point-min))
382 (insert (make-string (/ (max (- (window-width) (or x 35)) 0) 2)
385 (goto-char (point-min))
386 (let* ((pheight (+ 20 (count-lines (point-min) (point-max))))
387 (wheight (window-height))
388 (rest (- wheight pheight)))
389 (insert (make-string (max 0 (* 2 (/ rest 3))) ?\n))))
394 _ ___ __ ___ __ _ ___
414 (gnus-indent-rigidly (point-min) (point-max)
415 (/ (max (- (window-width) (or x 46)) 0) 2))
416 (goto-char (point-min))
418 (let* ((pheight (count-lines (point-min) (point-max)))
419 (wheight (window-height))
420 (rest (- wheight pheight)))
421 (insert (make-string (max 0 (* 2 (/ rest 3))) ?\n))))
423 (goto-char (point-min))
424 (and (search-forward "Praxis" nil t)
425 (put-text-property (match-beginning 0) (match-end 0) 'face 'bold))
426 (goto-char (point-min))
427 (let* ((mode-string (gnus-group-set-mode-line)))
428 (setq mode-line-buffer-identification
429 (list (concat gnus-version (substring (car mode-string) 4))))
430 (set-buffer-modified-p t))))
435 (defvar gnus-use-toolbar 'default-toolbar
436 "*If nil, do not use a toolbar.
437 If it is non-nil, it must be a toolbar. The five legal values are
438 `default-toolbar', `top-toolbar', `bottom-toolbar',
439 `right-toolbar', and `left-toolbar'.")
441 (defvar gnus-group-toolbar
442 '([gnus-group-exit-icon gnus-group-exit t "Exit Gnus"]
443 [gnus-group-kill-group-icon gnus-group-kill-group t "Kill group"]
444 [gnus-group-get-new-news-icon gnus-group-get-new-news t "Get new news"]
445 [gnus-group-get-new-news-this-group-icon
446 gnus-group-get-new-news-this-group t "Get new news in this group"]
447 [gnus-group-catchup-current-icon
448 gnus-group-catchup-current t "Catchup group"]
449 [gnus-group-describe-group-icon
450 gnus-group-describe-group t "Describe group"])
451 "The group buffer toolbar.")
453 (defvar gnus-summary-toolbar
454 '([gnus-summary-post-news-icon
455 gnus-summary-post-news t "Post an article"]
456 [gnus-summary-save-article-file-icon
457 gnus-summary-save-article-file t "Save article in file"]
458 [gnus-summary-save-article-icon
459 gnus-summary-save-article t "Save article"]
460 [gnus-summary-reply-icon
461 gnus-summary-reply t "Mail a reply"]
462 [gnus-summary-reply-with-original-icon
463 gnus-summary-reply-with-original t "Mail a reply and yank the original"]
464 [gnus-summary-followup-icon
465 gnus-summary-followup t "Post a followup"]
466 [gnus-summary-followup-with-original-icon
467 gnus-summary-followup-with-original t
468 "Post a followup and yank the original"]
469 [gnus-uu-decode-uu-icon
470 gnus-uu-decode-uu t "Decode uuencoded articles"]
471 [gnus-uu-post-news-icon
472 gnus-uu-post-news t "Post an uuencoded article"]
473 [gnus-summary-caesar-message-icon
474 gnus-summary-caesar-message t "Rot 13"]
475 [gnus-summary-cancel-article-icon
476 gnus-summary-cancel-article t "Cancel article"])
477 "The summary buffer toolbar.")
479 (defun gnus-xmas-setup-toolbar (bar &optional force)
480 (let ((dir (gnus-xmas-find-glyph-directory))
481 icon up down disabled name)
485 (boundp (aref (car bar) 0)))
488 (setq icon (aref (car bar) 0)
489 name (symbol-name icon)
491 (setq up (concat dir name "-up.xpm"))
492 (setq down (concat dir name "-down.xpm"))
493 (setq disabled (concat dir name "-disabled.xpm"))
494 (if (not (file-exists-p up))
496 (set icon (toolbar-make-button-list
497 up (and (file-exists-p down) down)
498 (and (file-exists-p disabled) disabled)))))
501 (defun gnus-xmas-setup-group-toolbar ()
502 (and gnus-use-toolbar
503 (gnus-xmas-setup-toolbar gnus-group-toolbar)
504 (set-specifier (symbol-value gnus-use-toolbar)
505 (cons (current-buffer) gnus-group-toolbar))))
507 (defun gnus-xmas-setup-summary-toolbar ()
508 (and gnus-use-toolbar
509 (gnus-xmas-setup-toolbar gnus-summary-toolbar)
510 (set-specifier (symbol-value gnus-use-toolbar)
511 (cons (current-buffer) gnus-summary-toolbar))))
513 ;;; gnus-xmas.el ends here