1 ;;; gnus-ems.el --- functions for making Gnus work under different Emacsen
2 ;; Copyright (C) 1995, 1996, 1997, 1998, 1999, 2000
3 ;; Free Software Foundation, Inc.
5 ;; Author: Lars Magne Ingebrigtsen <larsi@gnus.org>
8 ;; This file is part of GNU Emacs.
10 ;; GNU Emacs is free software; you can redistribute it and/or modify
11 ;; it under the terms of the GNU General Public License as published by
12 ;; the Free Software Foundation; either version 2, or (at your option)
15 ;; GNU Emacs is distributed in the hope that it will be useful,
16 ;; but WITHOUT ANY WARRANTY; without even the implied warranty of
17 ;; MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
18 ;; GNU General Public License for more details.
20 ;; You should have received a copy of the GNU General Public License
21 ;; along with GNU Emacs; see the file COPYING. If not, write to the
22 ;; Free Software Foundation, Inc., 59 Temple Place - Suite 330,
23 ;; Boston, MA 02111-1307, USA.
33 ;;; Function aliases later to be redefined for XEmacs usage.
35 (defvar gnus-mouse-2
[mouse-2
])
36 (defvar gnus-down-mouse-3
[down-mouse-3
])
37 (defvar gnus-down-mouse-2
[down-mouse-2
])
38 (defvar gnus-widget-button-keymap nil
)
39 (defvar gnus-mode-line-modified
40 (if (or (featurep 'xemacs
)
41 (< emacs-major-version
20))
46 (autoload 'gnus-xmas-define
"gnus-xmas")
47 (autoload 'gnus-xmas-redefine
"gnus-xmas")
48 (autoload 'appt-select-lowest-window
"appt"))
50 (if (featurep 'xemacs
)
51 (autoload 'gnus-smiley-display
"smiley")
52 (autoload 'gnus-smiley-display
"smiley-ems") ; override XEmacs version
55 (defun gnus-kill-all-overlays ()
56 "Delete all overlays in the current buffer."
57 (let* ((overlayss (overlay-lists))
58 (buffer-read-only nil
)
59 (overlays (delq nil
(nconc (car overlayss
) (cdr overlayss
)))))
61 (delete-overlay (pop overlays
)))))
65 (defun gnus-mule-max-width-function (el max-width
)
66 `(let* ((val (eval (, el
)))
67 (valstr (if (numberp val
)
68 (int-to-string val
) val
)))
69 (if (> (length valstr
) ,max-width
)
70 (truncate-string-to-width valstr
,max-width
)
74 (if (featurep 'xemacs
)
76 (defvar gnus-mouse-face-prop
'mouse-face
77 "Property used for highlighting mouse regions.")))
80 (let ((case-fold-search t
))
82 ((string-match "windows-nt\\|os/2\\|emx\\|cygwin32"
83 (symbol-name system-type
))
84 (setq nnheader-file-name-translation-alist
85 (append nnheader-file-name-translation-alist
86 (mapcar (lambda (c) (cons c ?_
))
87 '(?
: ?
* ?
\" ?
< ?
> ??
))
90 (defvar gnus-tmp-unread
)
91 (defvar gnus-tmp-replied
)
92 (defvar gnus-tmp-score-char
)
93 (defvar gnus-tmp-indentation
)
94 (defvar gnus-tmp-opening-bracket
)
95 (defvar gnus-tmp-lines
)
96 (defvar gnus-tmp-name
)
97 (defvar gnus-tmp-closing-bracket
)
98 (defvar gnus-tmp-subject-or-nil
)
100 (defun gnus-ems-redefine ()
103 (gnus-xmas-redefine))
106 ;; Mule and new Emacs definitions
108 ;; [Note] Now there are three kinds of mule implementations,
109 ;; original MULE, XEmacs/mule and Emacs 20+ including
110 ;; MULE features. Unfortunately these API are different. In
111 ;; particular, Emacs (including original MULE) and XEmacs are
112 ;; quite different. Howvere, this version of Gnus doesn't support
113 ;; anything other than XEmacs 20+ and Emacs 20.3+.
115 ;; Predicates to check are following:
116 ;; (boundp 'MULE) is t only if MULE (original; anything older than
117 ;; Mule 2.3) is running.
118 ;; (featurep 'mule) is t when every mule variants are running.
120 ;; It is possible to detect XEmacs/mule by (featurep 'mule) and
121 ;; checking `emacs-version'. In this case, the implementation for
122 ;; XEmacs/mule may be shareable between XEmacs and XEmacs/mule.
124 (defvar gnus-summary-display-table nil
125 "Display table used in summary mode buffers.")
126 (defalias 'gnus-max-width-function
'gnus-mule-max-width-function
)
128 (when (boundp 'gnus-check-before-posting
)
129 (setq gnus-check-before-posting
131 (delq 'control-chars gnus-check-before-posting
))))
133 (defun gnus-summary-line-format-spec ()
134 (insert gnus-tmp-unread gnus-tmp-replied
135 gnus-tmp-score-char gnus-tmp-indentation
)
140 gnus-tmp-opening-bracket
143 (if (> (length gnus-tmp-name
) 20)
144 (truncate-string-to-width gnus-tmp-name
20)
146 gnus-tmp-closing-bracket
)
148 gnus-mouse-face-prop gnus-mouse-face
)
149 (insert " " gnus-tmp-subject-or-nil
"\n")))))
151 (defun gnus-region-active-p ()
152 "Say whether the region is active."
153 (and (boundp 'transient-mark-mode
)
155 (boundp 'mark-active
)
158 (if (fboundp 'add-minor-mode
)
159 (defalias 'gnus-add-minor-mode
'add-minor-mode
)
160 (defun gnus-add-minor-mode (mode name map
&rest rest
)
161 (set (make-local-variable mode
) t
)
162 (unless (assq mode minor-mode-alist
)
163 (push `(,mode
,name
) minor-mode-alist
))
164 (unless (assq mode minor-mode-map-alist
)
165 (push (cons mode map
)
166 minor-mode-map-alist
))))
168 (defun gnus-x-splash ()
169 "Show a splash screen using a pixmap in the current buffer."
170 (let ((dir (nnheader-find-etc-directory "gnus"))
171 pixmap file height beg i
)
173 (switch-to-buffer (gnus-get-buffer-create gnus-group-buffer
))
174 (let ((buffer-read-only nil
)
178 (file-exists-p (setq file
179 (expand-file-name "x-splash" dir
))))
181 (insert-file-contents file
)
182 (goto-char (point-min))
184 (setq pixmap
(read (current-buffer))))))
186 (make-face 'gnus-splash
)
187 (setq height
(/ (car pixmap
) (frame-char-height))
188 width
(/ (cadr pixmap
) (frame-char-width)))
189 (set-face-foreground 'gnus-splash
"Brown")
190 (set-face-stipple 'gnus-splash pixmap
)
191 (insert-char ?
\n (* (/ (window-height) 2 height
) height
))
194 (insert-char ?\
(* (/ (window-width) 2 width
) width
))
196 (insert-char ?\ width
)
197 (set-text-properties beg
(point) '(face gnus-splash
))
200 (goto-char (point-min))
203 (defvar gnus-article-xface-ring-internal nil
204 "Cache for face data.")
206 ;; Worth customizing?
207 (defvar gnus-article-xface-ring-size
6
208 "Length of the ring used for `gnus-article-xface-ring-internal'.")
210 (defvar gnus-article-compface-xbm
211 (eq 0 (string-match "#define" (shell-command-to-string "uncompface -X")))
212 "Non-nil means the compface program supports the -X option.
213 That produces XBM output.")
215 (defun gnus-article-display-xface (beg end
)
216 "Display an XFace header from between BEG and END in the current article.
217 Requires support for images in your Emacs and the external programs
218 `uncompface', and `icontopbm'. On a GNU/Linux system these
219 might be in packages with names like `compface' or `faces-xface' and
220 `netpbm' or `libgr-progs', for instance. See also
221 `gnus-article-compface-xbm'.
223 This function is for Emacs 21+. See `gnus-xmas-article-display-xface'
225 ;; It might be worth converting uncompface's output in Lisp.
227 (when (if (fboundp 'display-graphic-p
)
229 (unless gnus-article-xface-ring-internal
; Only load ring when needed.
230 (setq gnus-article-xface-ring-internal
231 (make-ring gnus-article-xface-ring-size
)))
233 (let* ((cur (current-buffer))
234 (data (buffer-substring beg end
))
235 (image (cdr-safe (assoc data
(ring-elements
236 gnus-article-xface-ring-internal
))))
237 default-enable-multibyte-characters
)
241 (and (eq 0 (apply #'call-process-region
(point-min) (point-max)
244 (if gnus-article-compface-xbm
246 (if gnus-article-compface-xbm
248 (goto-char (point-min))
249 (progn (insert "/* Width=48, Height=48 */\n") t
)
250 (eq 0 (call-process-region (point-min) (point-max)
253 ;; Miles Bader says that faces don't look right as
255 (if (eq 'dark
(cdr-safe (assq 'background-mode
256 (frame-parameters))))
257 (setq image
(create-image (buffer-string)
258 (if gnus-article-compface-xbm
264 :background
"white"))
265 (setq image
(create-image (buffer-string)
266 (if gnus-article-compface-xbm
271 (ring-insert gnus-article-xface-ring-internal
(cons data image
)))
273 (goto-char (point-min))
274 (re-search-forward "^From:" nil
'move
)
275 (insert-image image
))))))
279 ;;; gnus-ems.el ends here