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.
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 (or (featurep 'mode-motion+)
88 (add-hook 'mode-motion-hook 'mode-motion-highlight-line)))
90 (defun gnus-xmas-set-text-properties (start end props &optional buffer)
91 "You should NEVER use this function. It is ideologically blasphemous.
92 It is provided only to ease porting of broken FSF Emacs programs."
93 (if (and (stringp buffer) (not (setq buffer (get-buffer buffer))))
95 (map-extents (lambda (extent ignored)
96 (remove-text-properties
98 (list (extent-property extent 'text-prop) nil)
100 buffer start end nil nil 'text-prop)
101 (add-text-properties start end props buffer)))
103 (defun gnus-xmas-highlight-selected-summary ()
104 ;; Highlight selected article in summary buffer
105 (if gnus-summary-selected-face
107 (if gnus-newsgroup-selected-overlay
108 (delete-extent gnus-newsgroup-selected-overlay))
109 (setq gnus-newsgroup-selected-overlay
110 (make-extent (gnus-point-at-bol) (gnus-point-at-eol)))
111 (set-extent-face gnus-newsgroup-selected-overlay
112 gnus-summary-selected-face))))
114 (defun gnus-xmas-summary-recenter ()
115 (let* ((top (cond ((< (window-height) 4) 0)
116 ((< (window-height) 7) 1)
118 (height (- (window-height) 2))
119 (bottom (save-excursion (goto-char (point-max))
120 (forward-line (- height))
122 (window (get-buffer-window (current-buffer))))
124 ;; The user has to want it,
125 gnus-auto-center-summary
126 ;; the article buffer must be displayed,
127 (get-buffer-window gnus-article-buffer)
128 ;; Set the window start to either `bottom', which is the biggest
129 ;; possible valid number, or the second line from the top,
130 ;; whichever is the least.
132 window (min bottom (save-excursion (forward-line (- top))
135 (defun gnus-xmas-group-insert-group-line-info (group)
136 (let ((entry (gnus-gethash group gnus-newsrc-hashtb))
141 (setq info (nth 2 entry))
142 (gnus-group-insert-group-line
143 nil group (nth 1 info) (nth 3 info) (car entry) (nth 4 info)))
144 (setq active (gnus-gethash group gnus-active-hashtb))
146 (gnus-group-insert-group-line
147 nil group (if (member group gnus-zombie-list) gnus-level-zombie
149 nil (if active (- (1+ (cdr active)) (car active)) 0) nil))
152 (remove-text-properties
153 (1+ (gnus-point-at-bol)) (1+ (gnus-point-at-eol))
154 '(gnus-group nil)))))
156 (defun gnus-xmas-copy-article-buffer (&optional article-buffer)
157 (setq gnus-article-copy (get-buffer-create " *gnus article copy*"))
158 (buffer-disable-undo gnus-article-copy)
159 (or (memq gnus-article-copy gnus-buffer-list)
160 (setq gnus-buffer-list (cons gnus-article-copy gnus-buffer-list)))
161 (let ((article-buffer (or article-buffer gnus-article-buffer))
163 (if (and (get-buffer article-buffer)
164 (buffer-name (get-buffer article-buffer)))
166 (set-buffer article-buffer)
168 (setq buf (buffer-substring (point-min) (point-max)))
169 (set-buffer gnus-article-copy)
171 (insert (format "%s" buf))))))
173 (defun gnus-xmas-article-push-button (event)
174 "Check text under the mouse pointer for a callback function.
175 If the text under the mouse pointer has a `gnus-callback' property,
176 call it with the value of the `gnus-data' text property."
178 (set-buffer (window-buffer (event-window event)))
179 (let* ((pos (event-closest-point event))
180 (data (get-text-property pos 'gnus-data))
181 (fun (get-text-property pos 'gnus-callback)))
182 (if fun (funcall fun data))))
184 (defun gnus-xmas-move-overlay (extent start end &optional buffer)
185 (set-extent-endpoints extent start end))
187 ;; Fixed by Christopher Davis <ckd@loiosh.kei.com>.
188 (defun gnus-xmas-article-add-button (from to fun &optional data)
189 "Create a button between FROM and TO with callback FUN and data DATA."
190 (and gnus-article-button-face
191 (gnus-overlay-put (gnus-make-overlay from to)
192 'face gnus-article-button-face))
196 (and gnus-article-mouse-face
197 (list 'mouse-face gnus-article-mouse-face))
198 (list 'gnus-callback fun)
199 (and data (list 'gnus-data data))
200 (list 'highlight t))))
202 (defun gnus-xmas-window-top-edge (&optional window)
203 (nth 1 (window-pixel-edges window)))
205 ;; Select the lowest window on the frame.
206 (defun gnus-xmas-appt-select-lowest-window ()
207 (let* ((lowest-window (selected-window))
208 (bottom-edge (car (cdr (cdr (cdr (window-pixel-edges))))))
209 (last-window (previous-window))
212 (let* ((this-window (next-window))
213 (next-bottom-edge (car (cdr (cdr (cdr
216 (if (< bottom-edge next-bottom-edge)
218 (setq bottom-edge next-bottom-edge)
219 (setq lowest-window this-window)))
221 (select-window this-window)
222 (if (eq last-window this-window)
224 (select-window lowest-window)
225 (setq window-search nil)))))))
227 (defun gnus-xmas-group-menu-add ()
228 (easy-menu-add gnus-group-reading-menu)
229 (easy-menu-add gnus-group-group-menu)
230 (easy-menu-add gnus-group-misc-menu)
231 (gnus-xmas-install-mouse-tracker))
233 (defun gnus-xmas-summary-menu-add ()
234 (easy-menu-add gnus-summary-article-menu)
235 (easy-menu-add gnus-summary-thread-menu)
236 (easy-menu-add gnus-summary-misc-menu)
237 (easy-menu-add gnus-summary-post-menu)
238 (easy-menu-add gnus-summary-kill-menu)
239 (gnus-xmas-install-mouse-tracker))
241 (defun gnus-xmas-article-menu-add ()
242 (easy-menu-add gnus-article-article-menu)
243 (easy-menu-add gnus-article-treatment-menu))
246 (defun gnus-xmas-define ()
247 (setq gnus-mouse-2 [button2])
249 (or (memq 'underline (list-faces))
250 (and (fboundp 'make-face)
251 (funcall (intern "make-face") 'underline)))
252 ;; Must avoid calling set-face-underline-p directly, because it
253 ;; is a defsubst in emacs19, and will make the .elc files non
255 (or (face-differs-from-default-p 'underline)
256 (funcall (intern "set-face-underline-p") 'underline t))
258 (fset 'gnus-make-overlay 'make-extent)
259 (fset 'gnus-overlay-put 'set-extent-property)
260 (fset 'gnus-move-overlay 'gnus-xmas-move-overlay)
262 (fset 'set-text-properties 'gnus-xmas-set-text-properties)
264 (or (boundp 'standard-display-table) (setq standard-display-table nil))
265 (or (boundp 'read-event) (fset 'read-event 'next-command-event))
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 (fset 'gnus-mouse-face-function 'identity)
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-insert-group-line-info
321 'gnus-xmas-group-insert-group-line-info)
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)
328 (or (fboundp 'appt-select-lowest-window)
329 (fset 'appt-select-lowest-window
330 'gnus-xmas-appt-select-lowest-window))
332 (add-hook 'gnus-group-mode-hook 'gnus-xmas-group-menu-add)
333 (add-hook 'gnus-summary-mode-hook 'gnus-xmas-summary-menu-add)
334 (add-hook 'gnus-article-mode-hook 'gnus-xmas-article-menu-add)
336 (add-hook 'gnus-group-mode-hook 'gnus-xmas-setup-group-toolbar)
337 (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 news 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)
462 (boundp (aref (car bar) 0)))
465 (setq icon (aref (car bar) 0)
466 name (symbol-name icon)
468 (setq up (concat dir name "-up.xpm"))
469 (setq down (concat dir name "-down.xpm"))
470 (setq disabled (concat dir name "-disabled.xpm"))
471 (if (not (file-exists-p up))
473 (set icon (toolbar-make-button-list
474 up (and (file-exists-p down) down)
475 (and (file-exists-p disabled) disabled)))))
478 (defun gnus-xmas-setup-group-toolbar ()
479 (and gnus-use-toolbar
480 (gnus-xmas-setup-toolbar gnus-group-toolbar)
481 (set-specifier (symbol-value gnus-use-toolbar)
482 (cons (current-buffer) gnus-group-toolbar))))
484 (defun gnus-xmas-setup-summary-toolbar ()
485 (and gnus-use-toolbar
486 (gnus-xmas-setup-toolbar gnus-summary-toolbar)
487 (set-specifier (symbol-value gnus-use-toolbar)
488 (cons (current-buffer) gnus-summary-toolbar))))
491 ;;; gnus-xmas.el ends here