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.
29 (defvar gnus-xmas-glyph-directory nil
30 "*Directory where Gnus logos and icons are located.
31 If this variable is nil, Gnus will try to locate the directory
34 ;;; Internal variables.
36 (defvar gnus-xmas-logo (make-glyph (make-specifier 'image)))
38 ;; Don't warn about these undefined variables.
40 (defvar gnus-group-mode-hook)
41 (defvar gnus-summary-mode-hook)
42 (defvar gnus-article-mode-hook)
45 (defvar gnus-active-hashtb)
46 (defvar gnus-article-buffer)
47 (defvar gnus-auto-center-summary)
48 (defvar gnus-buffer-list)
49 (defvar gnus-current-headers)
50 (defvar gnus-level-killed)
51 (defvar gnus-level-zombie)
52 (defvar gnus-newsgroup-bookmarks)
53 (defvar gnus-newsgroup-dependencies)
54 (defvar gnus-newsgroup-selected-overlay)
55 (defvar gnus-newsrc-hashtb)
56 (defvar gnus-read-mark)
57 (defvar gnus-refer-article-method)
58 (defvar gnus-reffed-article-number)
59 (defvar gnus-unread-mark)
61 (defvar gnus-view-pseudos)
62 (defvar gnus-view-pseudos-separately)
64 (defvar gnus-zombie-list)
65 ;;defined in gnus-msg.el
66 (defvar gnus-article-copy)
67 (defvar gnus-check-before-posting)
68 ;;defined in gnus-vis.el
69 (defvar gnus-article-button-face)
70 (defvar gnus-article-mouse-face)
71 (defvar gnus-summary-selected-face)
72 (defvar gnus-group-reading-menu)
73 (defvar gnus-group-group-menu)
74 (defvar gnus-group-misc-menu)
75 (defvar gnus-summary-article-menu)
76 (defvar gnus-summary-thread-menu)
77 (defvar gnus-summary-misc-menu)
78 (defvar gnus-summary-post-menu)
79 (defvar gnus-summary-kill-menu)
80 (defvar gnus-article-article-menu)
81 (defvar gnus-article-treatment-menu)
83 (defvar standard-display-table)
85 (defun gnus-xmas-set-text-properties (start end props &optional buffer)
86 "You should NEVER use this function. It is ideologically blasphemous.
87 It is provided only to ease porting of broken FSF Emacs programs."
88 (if (and (stringp buffer) (not (setq buffer (get-buffer buffer))))
90 (map-extents (lambda (extent ignored)
91 (remove-text-properties
93 (list (extent-property extent 'text-prop) nil)
95 buffer start end nil nil 'text-prop)
96 (add-text-properties start end props buffer)))
98 (defun gnus-xmas-highlight-selected-summary ()
99 ;; Highlight selected article in summary buffer
100 (if gnus-summary-selected-face
102 (if gnus-newsgroup-selected-overlay
103 (delete-extent gnus-newsgroup-selected-overlay))
104 (setq gnus-newsgroup-selected-overlay
105 (make-extent (gnus-point-at-bol) (gnus-point-at-eol)))
106 (set-extent-face gnus-newsgroup-selected-overlay
107 gnus-summary-selected-face))))
109 (defun gnus-xmas-summary-recenter ()
110 (let* ((top (cond ((< (window-height) 4) 0)
111 ((< (window-height) 7) 1)
113 (height (- (window-height) 2))
114 (bottom (save-excursion (goto-char (point-max))
115 (forward-line (- height))
117 (window (get-buffer-window (current-buffer))))
119 ;; The user has to want it,
120 gnus-auto-center-summary
121 ;; the article buffer must be displayed,
122 (get-buffer-window gnus-article-buffer)
123 ;; Set the window start to either `bottom', which is the biggest
124 ;; possible valid number, or the second line from the top,
125 ;; whichever is the least.
127 window (min bottom (save-excursion
128 (forward-line (- top)) (point)))))))
130 (defun gnus-xmas-group-insert-group-line-info (group)
131 (let ((entry (gnus-gethash group gnus-newsrc-hashtb))
136 (setq info (nth 2 entry))
137 (gnus-group-insert-group-line
138 nil group (gnus-info-group info) (gnus-info-marks info)
139 (car entry) (gnus-info-method info)))
140 (setq active (gnus-gethash group gnus-active-hashtb))
142 (gnus-group-insert-group-line
143 nil group (if (member group gnus-zombie-list) gnus-level-zombie
145 nil (if active (- (1+ (cdr active)) (car active)) 0) nil))
148 (remove-text-properties
149 (1+ (gnus-point-at-bol)) (1+ (gnus-point-at-eol))
150 '(gnus-group nil)))))
152 (defun gnus-xmas-copy-article-buffer (&optional article-buffer)
153 (setq gnus-article-copy (get-buffer-create " *gnus article copy*"))
154 (buffer-disable-undo gnus-article-copy)
155 (or (memq gnus-article-copy gnus-buffer-list)
156 (setq gnus-buffer-list (cons gnus-article-copy gnus-buffer-list)))
157 (let ((article-buffer (or article-buffer gnus-article-buffer))
159 (if (and (get-buffer article-buffer)
160 (buffer-name (get-buffer article-buffer)))
162 (set-buffer article-buffer)
164 (setq buf (buffer-substring (point-min) (point-max)))
165 (set-buffer gnus-article-copy)
167 (insert (format "%s" buf))))))
169 (defun gnus-xmas-article-push-button (event)
170 "Check text under the mouse pointer for a callback function.
171 If the text under the mouse pointer has a `gnus-callback' property,
172 call it with the value of the `gnus-data' text property."
174 (set-buffer (window-buffer (event-window event)))
175 (let* ((pos (event-closest-point event))
176 (data (get-text-property pos 'gnus-data))
177 (fun (get-text-property pos 'gnus-callback)))
178 (if fun (funcall fun data))))
180 (defun gnus-xmas-move-overlay (extent start end &optional buffer)
181 (set-extent-endpoints extent start end))
183 ;; Fixed by Christopher Davis <ckd@loiosh.kei.com>.
184 (defun gnus-xmas-article-add-button (from to fun &optional data)
185 "Create a button between FROM and TO with callback FUN and data DATA."
186 (and gnus-article-button-face
187 (gnus-overlay-put (gnus-make-overlay from to)
188 'face gnus-article-button-face))
192 (and gnus-article-mouse-face
193 (list 'mouse-face gnus-article-mouse-face))
194 (list 'gnus-callback fun)
195 (and data (list 'gnus-data data))
196 (list 'highlight t))))
198 (defun gnus-xmas-window-top-edge (&optional window)
199 (nth 1 (window-pixel-edges window)))
201 ;; Select the lowest window on the frame.
202 (defun gnus-xmas-appt-select-lowest-window ()
203 (let* ((lowest-window (selected-window))
204 (bottom-edge (car (cdr (cdr (cdr (window-pixel-edges))))))
205 (last-window (previous-window))
208 (let* ((this-window (next-window))
209 (next-bottom-edge (car (cdr (cdr (cdr
212 (if (< bottom-edge next-bottom-edge)
214 (setq bottom-edge next-bottom-edge)
215 (setq lowest-window this-window)))
217 (select-window this-window)
218 (if (eq last-window this-window)
220 (select-window lowest-window)
221 (setq window-search nil)))))))
223 (defun gnus-xmas-group-menu-add ()
224 (easy-menu-add gnus-group-reading-menu)
225 (easy-menu-add gnus-group-group-menu)
226 (easy-menu-add gnus-group-misc-menu))
228 (defun gnus-xmas-summary-menu-add ()
229 (easy-menu-add gnus-summary-article-menu)
230 (easy-menu-add gnus-summary-thread-menu)
231 (easy-menu-add gnus-summary-misc-menu)
232 (easy-menu-add gnus-summary-post-menu)
233 (easy-menu-add gnus-summary-kill-menu))
235 (defun gnus-xmas-article-menu-add ()
236 (easy-menu-add gnus-article-article-menu)
237 (easy-menu-add gnus-article-treatment-menu))
240 (defun gnus-xmas-define ()
241 (setq gnus-mouse-2 [button2])
243 (or (memq 'underline (list-faces))
244 (and (fboundp 'make-face)
245 (funcall (intern "make-face") 'underline)))
246 ;; Must avoid calling set-face-underline-p directly, because it
247 ;; is a defsubst in emacs19, and will make the .elc files non
249 (or (face-differs-from-default-p 'underline)
250 (funcall (intern "set-face-underline-p") 'underline t))
252 (fset 'gnus-make-overlay 'make-extent)
253 (fset 'gnus-overlay-put 'set-extent-property)
254 (fset 'gnus-move-overlay 'gnus-xmas-move-overlay)
256 (fset 'set-text-properties 'gnus-xmas-set-text-properties)
258 (or (boundp 'standard-display-table) (setq standard-display-table nil))
259 (or (boundp 'read-event) (fset 'read-event 'next-command-event))
261 ;; Fix by "jeff (j.d.) sparkes" <jsparkes@bnr.ca>.
262 (defvar gnus-display-type (device-class)
263 "A symbol indicating the display Emacs is running under.
264 The symbol should be one of `color', `grayscale' or `mono'. If Emacs
265 guesses this display attribute wrongly, either set this variable in
266 your `~/.emacs' or set the resource `Emacs.displayType' in your
267 `~/.Xdefaults'. See also `gnus-background-mode'.
269 This is a meta-variable that will affect what default values other
270 variables get. You would normally not change this variable, but
271 pounce directly on the real variables themselves.")
274 (or (fboundp 'x-color-values)
275 (fset 'x-color-values
277 (color-instance-rgb-components
278 (make-color-instance color)))))
280 (defvar gnus-background-mode
283 (x-get-resource ".backgroundMode" "BackgroundMode" 'string)
285 (params (frame-parameters)))
286 (cond (bg-resource (intern (downcase bg-resource)))
287 ((and (assq 'background-color params)
288 (< (apply '+ (x-color-values
289 (cdr (assq 'background-color params))))
290 (/ (apply '+ (x-color-values "white")) 3)))
293 "A symbol indicating the Emacs background brightness.
294 The symbol should be one of `light' or `dark'.
295 If Emacs guesses this frame attribute wrongly, either set this variable in
296 your `~/.emacs' or set the resource `Emacs.backgroundMode' in your
298 See also `gnus-display-type'.
300 This is a meta-variable that will affect what default values other
301 variables get. You would normally not change this variable, but
302 pounce directly on the real variables themselves.")
307 (defun gnus-xmas-redefine ()
308 (fset 'gnus-mouse-face-function 'identity)
309 (fset 'gnus-summary-make-display-table (lambda () nil))
310 (fset 'gnus-visual-turn-off-edit-menu 'identity)
311 (fset 'gnus-highlight-selected-summary
312 'gnus-xmas-highlight-selected-summary)
313 (fset 'gnus-summary-recenter 'gnus-xmas-summary-recenter)
314 (fset 'gnus-group-insert-group-line-info
315 'gnus-xmas-group-insert-group-line-info)
316 (fset 'gnus-copy-article-buffer 'gnus-xmas-copy-article-buffer)
317 (fset 'gnus-article-push-button 'gnus-xmas-article-push-button)
318 (fset 'gnus-article-add-button 'gnus-xmas-article-add-button)
319 (fset 'gnus-window-top-edge 'gnus-xmas-window-top-edge)
320 (fset 'set-text-properties 'gnus-xmas-set-text-properties)
322 (or (fboundp 'appt-select-lowest-window)
323 (fset 'appt-select-lowest-window
324 'gnus-xmas-appt-select-lowest-window))
326 (add-hook 'gnus-group-mode-hook 'gnus-xmas-group-menu-add)
327 (add-hook 'gnus-summary-mode-hook 'gnus-xmas-summary-menu-add)
328 (add-hook 'gnus-article-mode-hook 'gnus-xmas-article-menu-add)
330 (add-hook 'gnus-group-mode-hook 'gnus-xmas-setup-group-toolbar)
331 (add-hook 'gnus-summary-mode-hook 'gnus-xmas-setup-summary-toolbar))
334 ;;; XEmacs logo and toolbar.
336 (defun gnus-xmas-find-glyph-directory ()
337 (or gnus-xmas-glyph-directory ; We have a dir already...
338 (let ((path load-path)
340 ;; We try to find the dir by looking at the load path,
341 ;; stripping away the last component and adding "etc/".
344 (file-name-directory (directory-file-name (car path)))
346 (if (and (file-exists-p dir)
347 (file-directory-p dir)
348 (file-exists-p (concat dir "gnus-group-exit-icon-up.xpm")))
349 (setq gnus-xmas-glyph-directory dir
351 (setq path (cdr path))))
352 gnus-xmas-glyph-directory)))
354 (defun gnus-xmas-group-startup (&optional x y)
355 "Insert startup message in current buffer."
356 ;; Insert the message.
360 (set-glyph-property gnus-xmas-logo 'image "~/tmp/gnus.xpm")
361 (set-glyph-image gnus-xmas-logo "~/tmp/gnus.xpm" 'global 'x)
364 (set-extent-begin-glyph (make-extent (point) (point)) gnus-xmas-logo)
366 Gnus * A newsreader for Emacsen
367 A Praxis Release * larsi@ifi.uio.no")
368 (goto-char (point-min))
370 (insert (make-string (/ (max (- (window-width) (or x 35)) 0) 2)
373 (goto-char (point-min))
374 ;; +4 is fuzzy factor.
375 (insert-char ?\n (/ (max (- (window-height) (or y 24)) 0) 2)))
392 ;; 18 is the longest line.
393 (indent-rigidly (point-min) (point-max)
394 (/ (max (- (window-width) (or x 28)) 0) 2))
395 (goto-char (point-min))
396 ;; +4 is fuzzy factor.
397 (insert-char ?\n (/ (max (- (window-height) (or y 12)) 0) 2)))
400 (goto-char (point-min))
401 (search-forward "Praxis")
402 (put-text-property (match-beginning 0) (match-end 0) 'face 'bold)
403 (goto-char (point-min)))
407 (defvar gnus-use-toolbar 'default-toolbar
408 "*If nil, do not use a toolbar.
409 If it is non-nil, it must be a toolbar. The five legal values are
410 `default-toolbar', `top-toolbar', `bottom-toolbar',
411 `right-toolbar', and `left-toolbar'.")
413 (defvar gnus-group-toolbar
414 '([gnus-group-exit-icon gnus-group-exit t "Exit Gnus"]
415 [gnus-group-kill-group-icon gnus-group-kill-group t "Kill group"]
416 [gnus-group-get-new-news-icon gnus-group-get-new-news t "Get new news"]
417 [gnus-group-get-new-news-this-group-icon
418 gnus-group-get-new-news-this-group t "Get new news in this group"]
419 [gnus-group-catchup-current-icon
420 gnus-group-catchup-current t "Catchup group"]
421 [gnus-group-describe-group-icon
422 gnus-group-describe-group t "Describe group"])
423 "The group buffer toolbar.")
425 (defvar gnus-summary-toolbar
426 '([gnus-summary-post-news-icon
427 gnus-summary-post-news t "Post an article"]
428 [gnus-summary-save-article-file-icon
429 gnus-summary-save-article-file t "Save article in file"]
430 [gnus-summary-save-article-icon
431 gnus-summary-save-article t "Save article"]
432 [gnus-summary-reply-icon
433 gnus-summary-reply t "Mail a reply"]
434 [gnus-summary-reply-with-original-icon
435 gnus-summary-reply-with-original t "Mail a reply and yank the original"]
436 [gnus-summary-followup-icon
437 gnus-summary-followup t "Post a followup"]
438 [gnus-summary-followup-with-original-icon
439 gnus-summary-followup-with-original t
440 "Post a followup and yank the original"]
441 [gnus-uu-decode-uu-icon
442 gnus-uu-decode-uu t "Decode uuencoded articles"]
443 [gnus-uu-post-news-icon
444 gnus-uu-post-news t "Post an uuencoded article"]
445 [gnus-summary-caesar-message-icon
446 gnus-summary-caesar-message t "Rot 13"]
447 [gnus-summary-cancel-article-icon
448 gnus-summary-cancel-article t "Cancel article"])
449 "The summary buffer toolbar.")
451 (defun gnus-xmas-setup-toolbar (bar &optional force)
452 (let ((dir (gnus-xmas-find-glyph-directory))
453 icon up down disabled name)
457 (boundp (aref (car bar) 0)))
460 (setq icon (aref (car bar) 0)
461 name (symbol-name icon)
463 (setq up (concat dir name "-up.xpm"))
464 (setq down (concat dir name "-down.xpm"))
465 (setq disabled (concat dir name "-disabled.xpm"))
466 (if (not (file-exists-p up))
468 (set icon (toolbar-make-button-list
469 up (and (file-exists-p down) down)
470 (and (file-exists-p disabled) disabled)))))
473 (defun gnus-xmas-setup-group-toolbar ()
474 (and gnus-use-toolbar
475 (gnus-xmas-setup-toolbar gnus-group-toolbar)
476 (set-specifier (symbol-value gnus-use-toolbar)
477 (cons (current-buffer) gnus-group-toolbar))))
479 (defun gnus-xmas-setup-summary-toolbar ()
480 (and gnus-use-toolbar
481 (gnus-xmas-setup-toolbar gnus-summary-toolbar)
482 (set-specifier (symbol-value gnus-use-toolbar)
483 (cons (current-buffer) gnus-summary-toolbar))))
486 ;;; gnus-xmas.el ends here