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-insert-group-line-info (group)
132 (let ((entry (gnus-gethash group gnus-newsrc-hashtb))
137 (setq info (nth 2 entry))
138 (gnus-group-insert-group-line
139 group (gnus-info-level info) (gnus-info-marks info)
140 (car entry) (gnus-info-method info)))
141 (setq active (gnus-gethash group gnus-active-hashtb))
143 (gnus-group-insert-group-line
144 group (if (member group gnus-zombie-list) gnus-level-zombie
146 nil (if active (- (1+ (cdr active)) (car active)) 0) nil))
149 (remove-text-properties
150 (1+ (gnus-point-at-bol)) (1+ (gnus-point-at-eol))
151 '(gnus-group nil)))))
153 (defun gnus-xmas-copy-article-buffer (&optional article-buffer)
154 (setq gnus-article-copy (get-buffer-create " *gnus article copy*"))
155 (buffer-disable-undo gnus-article-copy)
156 (or (memq gnus-article-copy gnus-buffer-list)
157 (setq gnus-buffer-list (cons gnus-article-copy gnus-buffer-list)))
158 (let ((article-buffer (or article-buffer gnus-article-buffer))
160 (if (and (get-buffer article-buffer)
161 (buffer-name (get-buffer article-buffer)))
163 (set-buffer article-buffer)
165 (setq buf (buffer-substring (point-min) (point-max)))
166 (set-buffer gnus-article-copy)
168 (insert (format "%s" buf))))))
170 (defun gnus-xmas-article-push-button (event)
171 "Check text under the mouse pointer for a callback function.
172 If the text under the mouse pointer has a `gnus-callback' property,
173 call it with the value of the `gnus-data' text property."
175 (set-buffer (window-buffer (event-window event)))
176 (let* ((pos (event-closest-point event))
177 (data (get-text-property pos 'gnus-data))
178 (fun (get-text-property pos 'gnus-callback)))
179 (if fun (funcall fun data))))
181 (defun gnus-xmas-move-overlay (extent start end &optional buffer)
182 (set-extent-endpoints extent start end))
184 ;; Fixed by Christopher Davis <ckd@loiosh.kei.com>.
185 (defun gnus-xmas-article-add-button (from to fun &optional data)
186 "Create a button between FROM and TO with callback FUN and data DATA."
187 (and gnus-article-button-face
188 (gnus-overlay-put (gnus-make-overlay from to)
189 'face gnus-article-button-face))
193 (and gnus-article-mouse-face
194 (list 'mouse-face gnus-article-mouse-face))
195 (list 'gnus-callback fun)
196 (and data (list 'gnus-data data))
197 (list 'highlight t))))
199 (defun gnus-xmas-window-top-edge (&optional window)
200 (nth 1 (window-pixel-edges window)))
202 ;; Select the lowest window on the frame.
203 (defun gnus-xmas-appt-select-lowest-window ()
204 (let* ((lowest-window (selected-window))
205 (bottom-edge (car (cdr (cdr (cdr (window-pixel-edges))))))
206 (last-window (previous-window))
209 (let* ((this-window (next-window))
210 (next-bottom-edge (car (cdr (cdr (cdr
213 (if (< bottom-edge next-bottom-edge)
215 (setq bottom-edge next-bottom-edge)
216 (setq lowest-window this-window)))
218 (select-window this-window)
219 (if (eq last-window this-window)
221 (select-window lowest-window)
222 (setq window-search nil)))))))
224 (defun gnus-xmas-group-menu-add ()
225 (easy-menu-add gnus-group-reading-menu)
226 (easy-menu-add gnus-group-group-menu)
227 (easy-menu-add gnus-group-misc-menu))
229 (defun gnus-xmas-summary-menu-add ()
230 (easy-menu-add gnus-summary-article-menu)
231 (easy-menu-add gnus-summary-thread-menu)
232 (easy-menu-add gnus-summary-misc-menu)
233 (easy-menu-add gnus-summary-post-menu)
234 (easy-menu-add gnus-summary-kill-menu))
236 (defun gnus-xmas-article-menu-add ()
237 (easy-menu-add gnus-article-article-menu)
238 (easy-menu-add gnus-article-treatment-menu))
241 (defun gnus-xmas-define ()
242 (setq gnus-mouse-2 [button2])
244 (or (memq 'underline (list-faces))
245 (and (fboundp 'make-face)
246 (funcall (intern "make-face") 'underline)))
247 ;; Must avoid calling set-face-underline-p directly, because it
248 ;; is a defsubst in emacs19, and will make the .elc files non
250 (or (face-differs-from-default-p 'underline)
251 (funcall (intern "set-face-underline-p") 'underline t))
253 (fset 'gnus-make-overlay 'make-extent)
254 (fset 'gnus-overlay-put 'set-extent-property)
255 (fset 'gnus-move-overlay 'gnus-xmas-move-overlay)
257 (fset 'set-text-properties 'gnus-xmas-set-text-properties)
259 (or (boundp 'standard-display-table) (setq standard-display-table nil))
260 (or (boundp 'read-event) (fset 'read-event 'next-command-event))
262 (defvar gnus-mouse-face-prop 'highlight)
264 ;; Fix by "jeff (j.d.) sparkes" <jsparkes@bnr.ca>.
265 (defvar gnus-display-type (device-class)
266 "A symbol indicating the display Emacs is running under.
267 The symbol should be one of `color', `grayscale' or `mono'. If Emacs
268 guesses this display attribute wrongly, either set this variable in
269 your `~/.emacs' or set the resource `Emacs.displayType' in your
270 `~/.Xdefaults'. See also `gnus-background-mode'.
272 This is a meta-variable that will affect what default values other
273 variables get. You would normally not change this variable, but
274 pounce directly on the real variables themselves.")
277 (or (fboundp 'x-color-values)
278 (fset 'x-color-values
280 (color-instance-rgb-components
281 (make-color-instance color)))))
283 (defvar gnus-background-mode
286 (x-get-resource ".backgroundMode" "BackgroundMode" 'string)
288 (params (frame-parameters)))
289 (cond (bg-resource (intern (downcase bg-resource)))
290 ((and (assq 'background-color params)
291 (< (apply '+ (x-color-values
292 (cdr (assq 'background-color params))))
293 (/ (apply '+ (x-color-values "white")) 3)))
296 "A symbol indicating the Emacs background brightness.
297 The symbol should be one of `light' or `dark'.
298 If Emacs guesses this frame attribute wrongly, either set this variable in
299 your `~/.emacs' or set the resource `Emacs.backgroundMode' in your
301 See also `gnus-display-type'.
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.")
310 (defun gnus-xmas-redefine ()
313 (fset 'gnus-summary-make-display-table (lambda () nil))
314 (fset 'gnus-visual-turn-off-edit-menu 'identity)
315 (fset 'gnus-highlight-selected-summary
316 'gnus-xmas-highlight-selected-summary)
317 (fset 'gnus-summary-recenter 'gnus-xmas-summary-recenter)
318 (fset 'gnus-group-insert-group-line-info
319 'gnus-xmas-group-insert-group-line-info)
320 (fset 'gnus-copy-article-buffer 'gnus-xmas-copy-article-buffer)
321 (fset 'gnus-article-push-button 'gnus-xmas-article-push-button)
322 (fset 'gnus-article-add-button 'gnus-xmas-article-add-button)
323 (fset 'gnus-window-top-edge 'gnus-xmas-window-top-edge)
324 (fset 'set-text-properties 'gnus-xmas-set-text-properties)
326 (or (fboundp 'appt-select-lowest-window)
327 (fset 'appt-select-lowest-window
328 'gnus-xmas-appt-select-lowest-window))
330 (add-hook 'gnus-group-mode-hook 'gnus-xmas-group-menu-add)
331 (add-hook 'gnus-summary-mode-hook 'gnus-xmas-summary-menu-add)
332 (add-hook 'gnus-article-mode-hook 'gnus-xmas-article-menu-add)
334 (add-hook 'gnus-group-mode-hook 'gnus-xmas-setup-group-toolbar)
335 (add-hook 'gnus-summary-mode-hook 'gnus-xmas-setup-summary-toolbar))
338 ;;; XEmacs logo and toolbar.
340 (defun gnus-xmas-find-glyph-directory ()
341 (or gnus-xmas-glyph-directory ; We have a dir already...
342 (let ((path load-path)
344 ;; We try to find the dir by looking at the load path,
345 ;; stripping away the last component and adding "etc/".
348 (file-name-directory (directory-file-name (car path)))
350 (if (and (file-exists-p dir)
351 (file-directory-p dir)
352 (file-exists-p (concat dir "gnus-group-exit-icon-up.xpm")))
353 (setq gnus-xmas-glyph-directory dir
355 (setq path (cdr path))))
356 gnus-xmas-glyph-directory)))
358 (defun gnus-xmas-group-startup (&optional x y)
359 "Insert startup message in current buffer."
360 ;; Insert the message.
364 (set-glyph-property gnus-xmas-logo 'image "~/tmp/gnus.xpm")
365 (set-glyph-image gnus-xmas-logo "~/tmp/gnus.xpm" 'global 'x)
368 (set-extent-begin-glyph (make-extent (point) (point)) gnus-xmas-logo)
370 Gnus * A newsreader for Emacsen
371 A Praxis Release * larsi@ifi.uio.no")
372 (goto-char (point-min))
374 (insert (make-string (/ (max (- (window-width) (or x 35)) 0) 2)
377 (goto-char (point-min))
378 ;; +4 is fuzzy factor.
379 (insert-char ?\n (/ (max (- (window-height) (or y 24)) 0) 2)))
396 ;; 18 is the longest line.
397 (indent-rigidly (point-min) (point-max)
398 (/ (max (- (window-width) (or x 28)) 0) 2))
399 (goto-char (point-min))
400 ;; +4 is fuzzy factor.
401 (insert-char ?\n (/ (max (- (window-height) (or y 12)) 0) 2)))
404 (goto-char (point-min))
405 (search-forward "Praxis")
406 (put-text-property (match-beginning 0) (match-end 0) 'face 'bold)
407 (goto-char (point-min)))
411 (defvar gnus-use-toolbar 'default-toolbar
412 "*If nil, do not use a toolbar.
413 If it is non-nil, it must be a toolbar. The five legal values are
414 `default-toolbar', `top-toolbar', `bottom-toolbar',
415 `right-toolbar', and `left-toolbar'.")
417 (defvar gnus-group-toolbar
418 '([gnus-group-exit-icon gnus-group-exit t "Exit Gnus"]
419 [gnus-group-kill-group-icon gnus-group-kill-group t "Kill group"]
420 [gnus-group-get-new-news-icon gnus-group-get-new-news t "Get new news"]
421 [gnus-group-get-new-news-this-group-icon
422 gnus-group-get-new-news-this-group t "Get new news in this group"]
423 [gnus-group-catchup-current-icon
424 gnus-group-catchup-current t "Catchup group"]
425 [gnus-group-describe-group-icon
426 gnus-group-describe-group t "Describe group"])
427 "The group buffer toolbar.")
429 (defvar gnus-summary-toolbar
430 '([gnus-summary-post-news-icon
431 gnus-summary-post-news t "Post an article"]
432 [gnus-summary-save-article-file-icon
433 gnus-summary-save-article-file t "Save article in file"]
434 [gnus-summary-save-article-icon
435 gnus-summary-save-article t "Save article"]
436 [gnus-summary-reply-icon
437 gnus-summary-reply t "Mail a reply"]
438 [gnus-summary-reply-with-original-icon
439 gnus-summary-reply-with-original t "Mail a reply and yank the original"]
440 [gnus-summary-followup-icon
441 gnus-summary-followup t "Post a followup"]
442 [gnus-summary-followup-with-original-icon
443 gnus-summary-followup-with-original t
444 "Post a followup and yank the original"]
445 [gnus-uu-decode-uu-icon
446 gnus-uu-decode-uu t "Decode uuencoded articles"]
447 [gnus-uu-post-news-icon
448 gnus-uu-post-news t "Post an uuencoded article"]
449 [gnus-summary-caesar-message-icon
450 gnus-summary-caesar-message t "Rot 13"]
451 [gnus-summary-cancel-article-icon
452 gnus-summary-cancel-article t "Cancel article"])
453 "The summary buffer toolbar.")
455 (defun gnus-xmas-setup-toolbar (bar &optional force)
456 (let ((dir (gnus-xmas-find-glyph-directory))
457 icon up down disabled name)
461 (boundp (aref (car bar) 0)))
464 (setq icon (aref (car bar) 0)
465 name (symbol-name icon)
467 (setq up (concat dir name "-up.xpm"))
468 (setq down (concat dir name "-down.xpm"))
469 (setq disabled (concat dir name "-disabled.xpm"))
470 (if (not (file-exists-p up))
472 (set icon (toolbar-make-button-list
473 up (and (file-exists-p down) down)
474 (and (file-exists-p disabled) disabled)))))
477 (defun gnus-xmas-setup-group-toolbar ()
478 (and gnus-use-toolbar
479 (gnus-xmas-setup-toolbar gnus-group-toolbar)
480 (set-specifier (symbol-value gnus-use-toolbar)
481 (cons (current-buffer) gnus-group-toolbar))))
483 (defun gnus-xmas-setup-summary-toolbar ()
484 (and gnus-use-toolbar
485 (gnus-xmas-setup-toolbar gnus-summary-toolbar)
486 (set-specifier (symbol-value gnus-use-toolbar)
487 (cons (current-buffer) gnus-summary-toolbar))))
489 ;;; gnus-xmas.el ends here