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))
228 (defun gnus-xmas-define ()
229 (setq gnus-mouse-2 [button2])
231 (or (memq 'underline (list-faces))
232 (and (fboundp 'make-face)
233 (funcall (intern "make-face") 'underline)))
234 ;; Must avoid calling set-face-underline-p directly, because it
235 ;; is a defsubst in emacs19, and will make the .elc files non
237 (or (face-differs-from-default-p 'underline)
238 (funcall (intern "set-face-underline-p") 'underline t))
240 (fset 'gnus-make-overlay 'make-extent)
241 (fset 'gnus-overlay-put 'set-extent-property)
242 (fset 'gnus-move-overlay 'gnus-xmas-move-overlay)
244 (fset 'set-text-properties 'gnus-xmas-set-text-properties)
246 (or (boundp 'standard-display-table) (setq standard-display-table nil))
247 (or (boundp 'read-event) (fset 'read-event 'next-command-event))
249 (defvar gnus-mouse-face-prop 'highlight)
251 (defun gnus-byte-code (func)
252 "Return a form that can be `eval'ed based on FUNC."
253 (let ((fval (symbol-function func)))
254 (if (byte-code-function-p fval)
256 (cons 'progn (cdr (cdr fval))))))
258 ;; Fix by "jeff (j.d.) sparkes" <jsparkes@bnr.ca>.
259 (defvar gnus-display-type (device-class)
260 "A symbol indicating the display Emacs is running under.
261 The symbol should be one of `color', `grayscale' or `mono'. If Emacs
262 guesses this display attribute wrongly, either set this variable in
263 your `~/.emacs' or set the resource `Emacs.displayType' in your
264 `~/.Xdefaults'. See also `gnus-background-mode'.
266 This is a meta-variable that will affect what default values other
267 variables get. You would normally not change this variable, but
268 pounce directly on the real variables themselves.")
271 (or (fboundp 'x-color-values)
272 (fset 'x-color-values
274 (color-instance-rgb-components
275 (make-color-instance color)))))
277 (defvar gnus-background-mode
280 (x-get-resource ".backgroundMode" "BackgroundMode" 'string)
282 (params (frame-parameters)))
283 (cond (bg-resource (intern (downcase bg-resource)))
284 ((and (assq 'background-color params)
285 (< (apply '+ (x-color-values
286 (cdr (assq 'background-color params))))
287 (/ (apply '+ (x-color-values "white")) 3)))
290 "A symbol indicating the Emacs background brightness.
291 The symbol should be one of `light' or `dark'.
292 If Emacs guesses this frame attribute wrongly, either set this variable in
293 your `~/.emacs' or set the resource `Emacs.backgroundMode' in your
295 See also `gnus-display-type'.
297 This is a meta-variable that will affect what default values other
298 variables get. You would normally not change this variable, but
299 pounce directly on the real variables themselves.")
304 (defun gnus-xmas-redefine ()
307 (fset 'gnus-summary-make-display-table (lambda () nil))
308 (fset 'gnus-visual-turn-off-edit-menu 'identity)
309 (fset 'gnus-highlight-selected-summary
310 'gnus-xmas-highlight-selected-summary)
311 (fset 'gnus-summary-recenter 'gnus-xmas-summary-recenter)
312 (fset 'gnus-group-remove-excess-properties
313 'gnus-xmas-group-remove-excess-properties)
314 (fset 'gnus-copy-article-buffer 'gnus-xmas-copy-article-buffer)
315 (fset 'gnus-article-push-button 'gnus-xmas-article-push-button)
316 (fset 'gnus-article-add-button 'gnus-xmas-article-add-button)
317 (fset 'gnus-window-top-edge 'gnus-xmas-window-top-edge)
318 (fset 'set-text-properties 'gnus-xmas-set-text-properties)
320 (or (fboundp 'appt-select-lowest-window)
321 (fset 'appt-select-lowest-window
322 'gnus-xmas-appt-select-lowest-window))
324 (add-hook 'gnus-group-mode-hook 'gnus-xmas-group-menu-add)
325 (add-hook 'gnus-summary-mode-hook 'gnus-xmas-summary-menu-add)
326 (add-hook 'gnus-article-mode-hook 'gnus-xmas-article-menu-add)
328 (add-hook 'gnus-group-mode-hook 'gnus-xmas-setup-group-toolbar)
329 (add-hook 'gnus-summary-mode-hook 'gnus-xmas-setup-summary-toolbar))
332 ;;; XEmacs logo and toolbar.
334 (defun gnus-xmas-find-glyph-directory ()
335 (or gnus-xmas-glyph-directory ; We have a dir already...
336 (let ((path load-path)
338 ;; We try to find the dir by looking at the load path,
339 ;; stripping away the last component and adding "etc/".
342 (file-name-directory (directory-file-name (car path)))
344 (if (and (file-exists-p dir)
345 (file-directory-p dir)
346 (file-exists-p (concat dir "gnus-group-exit-icon-up.xpm")))
347 (setq gnus-xmas-glyph-directory dir
349 (setq path (cdr path))))
350 gnus-xmas-glyph-directory)))
352 (defun gnus-xmas-group-startup (&optional x y)
353 "Insert startup message in current buffer."
354 ;; Insert the message.
358 (set-glyph-property gnus-xmas-logo 'image "~/tmp/gnus.xpm")
359 (set-glyph-image gnus-xmas-logo "~/tmp/gnus.xpm" 'global 'x)
362 (set-extent-begin-glyph (make-extent (point) (point)) gnus-xmas-logo)
364 Gnus * A newsreader for Emacsen
365 A Praxis Release * larsi@ifi.uio.no")
366 (goto-char (point-min))
368 (insert (make-string (/ (max (- (window-width) (or x 35)) 0) 2)
371 (goto-char (point-min))
372 ;; +4 is fuzzy factor.
373 (insert-char ?\n (/ (max (- (window-height) (or y 24)) 0) 2)))
390 ;; 18 is the longest line.
391 (indent-rigidly (point-min) (point-max)
392 (/ (max (- (window-width) (or x 28)) 0) 2))
393 (goto-char (point-min))
394 ;; +4 is fuzzy factor.
395 (insert-char ?\n (/ (max (- (window-height) (or y 12)) 0) 2)))
398 (goto-char (point-min))
399 (search-forward "Praxis")
400 (put-text-property (match-beginning 0) (match-end 0) 'face 'bold)
401 (goto-char (point-min)))
405 (defvar gnus-use-toolbar 'default-toolbar
406 "*If nil, do not use a toolbar.
407 If it is non-nil, it must be a toolbar. The five legal values are
408 `default-toolbar', `top-toolbar', `bottom-toolbar',
409 `right-toolbar', and `left-toolbar'.")
411 (defvar gnus-group-toolbar
412 '([gnus-group-exit-icon gnus-group-exit t "Exit Gnus"]
413 [gnus-group-kill-group-icon gnus-group-kill-group t "Kill group"]
414 [gnus-group-get-new-news-icon gnus-group-get-new-news t "Get new news"]
415 [gnus-group-get-new-news-this-group-icon
416 gnus-group-get-new-news-this-group t "Get new news in this group"]
417 [gnus-group-catchup-current-icon
418 gnus-group-catchup-current t "Catchup group"]
419 [gnus-group-describe-group-icon
420 gnus-group-describe-group t "Describe group"])
421 "The group buffer toolbar.")
423 (defvar gnus-summary-toolbar
424 '([gnus-summary-post-news-icon
425 gnus-summary-post-news t "Post an article"]
426 [gnus-summary-save-article-file-icon
427 gnus-summary-save-article-file t "Save article in file"]
428 [gnus-summary-save-article-icon
429 gnus-summary-save-article t "Save article"]
430 [gnus-summary-reply-icon
431 gnus-summary-reply t "Mail a reply"]
432 [gnus-summary-reply-with-original-icon
433 gnus-summary-reply-with-original t "Mail a reply and yank the original"]
434 [gnus-summary-followup-icon
435 gnus-summary-followup t "Post a followup"]
436 [gnus-summary-followup-with-original-icon
437 gnus-summary-followup-with-original t
438 "Post a followup and yank the original"]
439 [gnus-uu-decode-uu-icon
440 gnus-uu-decode-uu t "Decode uuencoded articles"]
441 [gnus-uu-post-news-icon
442 gnus-uu-post-news t "Post an uuencoded article"]
443 [gnus-summary-caesar-message-icon
444 gnus-summary-caesar-message t "Rot 13"]
445 [gnus-summary-cancel-article-icon
446 gnus-summary-cancel-article t "Cancel article"])
447 "The summary buffer toolbar.")
449 (defun gnus-xmas-setup-toolbar (bar &optional force)
450 (let ((dir (gnus-xmas-find-glyph-directory))
451 icon up down disabled name)
455 (boundp (aref (car bar) 0)))
458 (setq icon (aref (car bar) 0)
459 name (symbol-name icon)
461 (setq up (concat dir name "-up.xpm"))
462 (setq down (concat dir name "-down.xpm"))
463 (setq disabled (concat dir name "-disabled.xpm"))
464 (if (not (file-exists-p up))
466 (set icon (toolbar-make-button-list
467 up (and (file-exists-p down) down)
468 (and (file-exists-p disabled) disabled)))))
471 (defun gnus-xmas-setup-group-toolbar ()
472 (and gnus-use-toolbar
473 (gnus-xmas-setup-toolbar gnus-group-toolbar)
474 (set-specifier (symbol-value gnus-use-toolbar)
475 (cons (current-buffer) gnus-group-toolbar))))
477 (defun gnus-xmas-setup-summary-toolbar ()
478 (and gnus-use-toolbar
479 (gnus-xmas-setup-toolbar gnus-summary-toolbar)
480 (set-specifier (symbol-value gnus-use-toolbar)
481 (cons (current-buffer) gnus-summary-toolbar))))
483 ;;; gnus-xmas.el ends here