1 ;;; gnus-xmal.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.
27 (require 'mode-motion)
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-install-mouse-tracker ()
87 (add-hook 'mode-motion-hook 'mode-motion-highlight-line))
89 (defun gnus-xmas-set-text-properties (start end props &optional buffer)
90 "You should NEVER use this function. It is ideologically blasphemous.
91 It is provided only to ease porting of broken FSF Emacs programs."
92 (if (and (stringp buffer) (not (setq buffer (get-buffer buffer))))
94 (map-extents (lambda (extent ignored)
95 (remove-text-properties
97 (list (extent-property extent 'text-prop) nil)
99 buffer start end nil nil 'text-prop)
100 (add-text-properties start end props buffer)))
102 (defun gnus-xmas-highlight-selected-summary ()
103 ;; Highlight selected article in summary buffer
104 (if gnus-summary-selected-face
106 (if gnus-newsgroup-selected-overlay
107 (delete-extent gnus-newsgroup-selected-overlay))
108 (setq gnus-newsgroup-selected-overlay
109 (make-extent (gnus-point-at-bol) (gnus-point-at-eol)))
110 (set-extent-face gnus-newsgroup-selected-overlay
111 gnus-summary-selected-face))))
113 (defun gnus-xmas-summary-recenter ()
114 (let* ((top (cond ((< (window-height) 4) 0)
115 ((< (window-height) 7) 1)
117 (height (- (window-height) 2))
118 (bottom (save-excursion (goto-char (point-max))
119 (forward-line (- height))
121 (window (get-buffer-window (current-buffer))))
123 ;; The user has to want it,
124 gnus-auto-center-summary
125 ;; the article buffer must be displayed,
126 (get-buffer-window gnus-article-buffer)
127 ;; Set the window start to either `bottom', which is the biggest
128 ;; possible valid number, or the second line from the top,
129 ;; whichever is the least.
131 window (min bottom (save-excursion (forward-line (- top))
134 (defun gnus-xmas-group-insert-group-line-info (group)
135 (let ((entry (gnus-gethash group gnus-newsrc-hashtb))
140 (setq info (nth 2 entry))
141 (gnus-group-insert-group-line
142 nil group (nth 1 info) (nth 3 info) (car entry) (nth 4 info)))
143 (setq active (gnus-gethash group gnus-active-hashtb))
145 (gnus-group-insert-group-line
146 nil group (if (member group gnus-zombie-list) gnus-level-zombie
148 nil (if active (- (1+ (cdr active)) (car active)) 0) nil))
151 (remove-text-properties
152 (1+ (gnus-point-at-bol)) (1+ (gnus-point-at-eol))
153 '(gnus-group nil)))))
155 (defun gnus-xmas-copy-article-buffer (&optional article-buffer)
156 (setq gnus-article-copy (get-buffer-create " *gnus article copy*"))
157 (buffer-disable-undo gnus-article-copy)
158 (or (memq gnus-article-copy gnus-buffer-list)
159 (setq gnus-buffer-list (cons gnus-article-copy gnus-buffer-list)))
160 (let ((article-buffer (or article-buffer gnus-article-buffer))
162 (if (and (get-buffer article-buffer)
163 (buffer-name (get-buffer article-buffer)))
165 (set-buffer article-buffer)
167 (setq buf (buffer-substring (point-min) (point-max)))
168 (set-buffer gnus-article-copy)
170 (insert (format "%s" buf))))))
172 (defun gnus-xmas-article-push-button (event)
173 "Check text under the mouse pointer for a callback function.
174 If the text under the mouse pointer has a `gnus-callback' property,
175 call it with the value of the `gnus-data' text property."
177 (set-buffer (window-buffer (event-window event)))
178 (let* ((pos (event-closest-point event))
179 (data (get-text-property pos 'gnus-data))
180 (fun (get-text-property pos 'gnus-callback)))
181 (if fun (funcall fun data))))
183 (defun gnus-xmas-move-overlay (extent start end &optional buffer)
184 (set-extent-endpoints extent start end))
186 ;; Fixed by Christopher Davis <ckd@loiosh.kei.com>.
187 (defun gnus-xmas-article-add-button (from to fun &optional data)
188 "Create a button between FROM and TO with callback FUN and data DATA."
189 (and gnus-article-button-face
190 (gnus-overlay-put (gnus-make-overlay from to)
191 'face gnus-article-button-face))
195 (and gnus-article-mouse-face
196 (list 'mouse-face gnus-article-mouse-face))
197 (list 'gnus-callback fun)
198 (and data (list 'gnus-data data))
199 (list 'highlight t))))
201 (defun gnus-xmas-window-top-edge (&optional window)
202 (nth 1 (window-pixel-edges window)))
204 ;; Select the lowest window on the frame.
205 (defun gnus-xmas-appt-select-lowest-window ()
206 (let* ((lowest-window (selected-window))
207 (bottom-edge (car (cdr (cdr (cdr (window-pixel-edges))))))
208 (last-window (previous-window))
211 (let* ((this-window (next-window))
212 (next-bottom-edge (car (cdr (cdr (cdr
215 (if (< bottom-edge next-bottom-edge)
217 (setq bottom-edge next-bottom-edge)
218 (setq lowest-window this-window)))
220 (select-window this-window)
221 (if (eq last-window this-window)
223 (select-window lowest-window)
224 (setq window-search nil)))))))
226 (defun gnus-xmas-group-menu-add ()
227 (easy-menu-add gnus-group-reading-menu)
228 (easy-menu-add gnus-group-group-menu)
229 (easy-menu-add gnus-group-misc-menu)
230 (gnus-xmas-install-mouse-tracker))
232 (defun gnus-xmas-summary-menu-add ()
233 (easy-menu-add gnus-summary-article-menu)
234 (easy-menu-add gnus-summary-thread-menu)
235 (easy-menu-add gnus-summary-misc-menu)
236 (easy-menu-add gnus-summary-post-menu)
237 (easy-menu-add gnus-summary-kill-menu)
238 (gnus-xmas-install-mouse-tracker))
240 (defun gnus-xmas-article-menu-add ()
241 (easy-menu-add gnus-article-article-menu)
242 (easy-menu-add gnus-article-treatment-menu))
245 (defun gnus-xmas-define ()
246 (setq gnus-mouse-2 [button2])
248 (or (memq 'underline (list-faces))
249 (and (fboundp 'make-face)
250 (funcall (intern "make-face") 'underline)))
251 ;; Must avoid calling set-face-underline-p directly, because it
252 ;; is a defsubst in emacs19, and will make the .elc files non
254 (or (face-differs-from-default-p 'underline)
255 (funcall (intern "set-face-underline-p") 'underline t))
257 (fset 'gnus-make-overlay 'make-extent)
258 (fset 'gnus-overlay-put 'set-extent-property)
259 (fset 'gnus-move-overlay 'gnus-xmas-move-overlay)
261 (fset 'set-text-properties 'gnus-xmas-set-text-properties)
263 (or (boundp 'standard-display-table) (setq standard-display-table nil))
264 (or (boundp 'read-event) (fset 'read-event 'next-command-event))
266 ;; Fix by "jeff (j.d.) sparkes" <jsparkes@bnr.ca>.
267 (defvar gnus-display-type (device-class)
268 "A symbol indicating the display Emacs is running under.
269 The symbol should be one of `color', `grayscale' or `mono'. If Emacs
270 guesses this display attribute wrongly, either set this variable in
271 your `~/.emacs' or set the resource `Emacs.displayType' in your
272 `~/.Xdefaults'. See also `gnus-background-mode'.
274 This is a meta-variable that will affect what default values other
275 variables get. You would normally not change this variable, but
276 pounce directly on the real variables themselves.")
279 (or (fboundp 'x-color-values)
280 (fset 'x-color-values
282 (color-instance-rgb-components
283 (make-color-instance color)))))
285 (defvar gnus-background-mode
288 (x-get-resource ".backgroundMode" "BackgroundMode" 'string)
290 (params (frame-parameters)))
291 (cond (bg-resource (intern (downcase bg-resource)))
292 ((and (assq 'background-color params)
293 (< (apply '+ (x-color-values
294 (cdr (assq 'background-color params))))
295 (/ (apply '+ (x-color-values "white")) 3)))
298 "A symbol indicating the Emacs background brightness.
299 The symbol should be one of `light' or `dark'.
300 If Emacs guesses this frame attribute wrongly, either set this variable in
301 your `~/.emacs' or set the resource `Emacs.backgroundMode' in your
303 See also `gnus-display-type'.
305 This is a meta-variable that will affect what default values other
306 variables get. You would normally not change this variable, but
307 pounce directly on the real variables themselves."))
311 (defun gnus-xmas-redefine ()
312 (fset 'gnus-mouse-face-function 'identity)
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-xnas-appt-select-lowest-window))
330 (add-hook 'gnus-group-menu-hook 'gnus-xmas-group-menu-add)
331 (add-hook 'gnus-summary-menu-hook 'gnus-xmas-summary-menu-add)
332 (add-hook 'gnus-article-menu-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)
340 ;;; XEmacs logo and toolbar.
342 (defun gnus-xmas-find-glyph-directory ()
343 (or gnus-xmas-glyph-directory ; We have a dir already...
344 (let ((path load-path)
346 ;; We try to find the dir by looking at the load path,
347 ;; stripping away the last component and adding "etc/".
350 (file-name-directory (directory-file-name (car path)))
352 (if (and (file-exists-p dir)
353 (file-directory-p dir))
354 (setq gnus-xmas-glyph-directory dir
356 (setq path (cdr path))))
357 gnus-xmas-glyph-directory)))
359 (defun gnus-xmas-group-startup (&optional x y)
360 "Insert startup message in current buffer."
361 ;; Insert the message.
365 (set-glyph-property gnus-xmas-logo 'image "~/tmp/gnus.xpm")
366 (set-glyph-image gnus-xmas-logo "~/tmp/gnus.xpm" 'global 'x)
369 (set-extent-begin-glyph (make-extent (point) (point)) gnus-xmas-logo)
371 Gnus * A newsreader for Emacsen
372 A Praxis Release * larsi@ifi.uio.no")
373 (goto-char (point-min))
375 (insert (make-string (/ (max (- (window-width) (or x 35)) 0) 2)
378 (goto-char (point-min))
379 ;; +4 is fuzzy factor.
380 (insert-char ?\n (/ (max (- (window-height) (or y 24)) 0) 2)))
397 ;; 18 is the longest line.
398 (indent-rigidly (point-min) (point-max)
399 (/ (max (- (window-width) (or x 28)) 0) 2))
400 (goto-char (point-min))
401 ;; +4 is fuzzy factor.
402 (insert-char ?\n (/ (max (- (window-height) (or y 12)) 0) 2)))
405 (goto-char (point-min))
406 (search-forward "Praxis")
407 (put-text-property (match-beginning 0) (match-end 0) 'face 'bold)
408 (goto-char (point-min)))
412 (defvar gnus-use-toolbar 'default-toolbar
413 "*If nil, do not use a toolbar.
414 If it is non-nil, it must be a toolbar. The five legal values are
415 `default-toolbar', `top-toolbar', `bottom-toolbar',
416 `right-toolbar', and `left-toolbar'.")
418 (defvar gnus-group-toolbar
419 '([gnus-group-exit-icon gnus-group-exit t "Exit Gnus"]
420 [gnus-group-kill-group-icon gnus-group-kill-group t "Kill group"]
421 [gnus-group-get-new-news-icon gnus-group-get-new-news t "Get new news"]
422 [gnus-group-get-new-news-this-group-icon
423 gnus-group-get-new-news-this-group t "Get new new in this group"]
424 [gnus-group-catchup-current-icon
425 gnus-group-catchup-current t "Catchup group"]
426 [gnus-group-describe-group-icon
427 gnus-group-describe-group t "Describe group"])
428 "The group buffer toolbar.")
430 (defvar gnus-summary-toolbar
431 '([gnus-summary-post-news-icon
432 gnus-summary-post-news t "Post an article"]
433 [gnus-summary-save-article-file-icon
434 gnus-summary-save-article-file t "Save article in file"]
435 [gnus-summary-save-article-icon
436 gnus-summary-save-article t "Save article"]
437 [gnus-summary-reply-icon
438 gnus-summary-reply t "Mail a reply"]
439 [gnus-summary-reply-with-original-icon
440 gnus-summary-reply-with-original t "Mail a reply and yank the original"]
441 [gnus-summary-followup-icon
442 gnus-summary-followup t "Post a followup"]
443 [gnus-summary-followup-with-original-icon
444 gnus-summary-followup-with-original t
445 "Post a followup and yank the original"]
446 [gnus-uu-decode-uu-icon
447 gnus-uu-decode-uu t "Decode uuencoded articles"]
448 [gnus-uu-post-news-icon
449 gnus-uu-post-news t "Post an uuencoded article"]
450 [gnus-summary-caesar-message-icon
451 gnus-summary-caesar-message t "Rot 13"]
452 [gnus-summary-cancel-article-icon
453 gnus-summary-cancel-article t "Cancel article"])
454 "The summary buffer toolbar.")
456 (defun gnus-xmas-setup-toolbar (bar &optional force)
457 (let ((dir (file-name-as-directory (gnus-xmas-find-glyph-directory)))
458 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))))
490 ;;; gnus-xmas.el ends here