;;; gnus-ems.el --- functions for making Gnus work under different Emacsen
-;; Copyright (C) 1995, 1996, 1997, 1998, 1999, 2000, 2001
-;; Free Software Foundation, Inc.
+
+;; Copyright (C) 1995, 1996, 1997, 1998, 1999, 2000, 2001, 2002, 2003,
+;; 2004, 2005, 2006, 2007, 2008, 2009, 2010 Free Software Foundation, Inc.
;; Author: Lars Magne Ingebrigtsen <larsi@gnus.org>
;; Keywords: news
;; This file is part of GNU Emacs.
-;; GNU Emacs is free software; you can redistribute it and/or modify
+;; GNU Emacs is free software: you can redistribute it and/or modify
;; it under the terms of the GNU General Public License as published by
-;; the Free Software Foundation; either version 2, or (at your option)
-;; any later version.
+;; the Free Software Foundation, either version 3 of the License, or
+;; (at your option) any later version.
;; GNU Emacs is distributed in the hope that it will be useful,
;; but WITHOUT ANY WARRANTY; without even the implied warranty of
;; GNU General Public License for more details.
;; You should have received a copy of the GNU General Public License
-;; along with GNU Emacs; see the file COPYING. If not, write to the
-;; Free Software Foundation, Inc., 59 Temple Place - Suite 330,
-;; Boston, MA 02111-1307, USA.
+;; along with GNU Emacs. If not, see <http://www.gnu.org/licenses/>.
;;; Commentary:
(defvar gnus-down-mouse-2 [down-mouse-2])
(defvar gnus-widget-button-keymap nil)
(defvar gnus-mode-line-modified
- (if (or (featurep 'xemacs)
- (< emacs-major-version 20))
+ (if (featurep 'xemacs)
'("--**-" . "-----")
'("**" "--")))
(eval-and-compile
(autoload 'gnus-xmas-define "gnus-xmas")
- (autoload 'gnus-xmas-redefine "gnus-xmas")
- (autoload 'appt-select-lowest-window "appt"))
+ (autoload 'gnus-xmas-redefine "gnus-xmas"))
-(if (featurep 'xemacs)
- (autoload 'gnus-smiley-display "smiley")
- (autoload 'gnus-smiley-display "smiley-ems")) ; override XEmacs version
+(autoload 'gnus-get-buffer-create "gnus")
+(autoload 'nnheader-find-etc-directory "nnheader")
+(autoload 'smiley-region "smiley")
(defun gnus-kill-all-overlays ()
"Delete all overlays in the current buffer."
(truncate-string-to-width valstr ,max-width)
valstr)))
-(eval-and-compile
- (defalias 'gnus-char-width
- (if (fboundp 'char-width)
- 'char-width
- (lambda (ch) 1)))) ;; A simple hack.
-
(eval-and-compile
(if (featurep 'xemacs)
(gnus-xmas-define)
(defvar gnus-mouse-face-prop 'mouse-face
"Property used for highlighting mouse regions.")))
-(eval-and-compile
- (let ((case-fold-search t))
- (cond
- ((string-match "windows-nt\\|os/2\\|emx\\|cygwin32"
- (symbol-name system-type))
- (setq nnheader-file-name-translation-alist
- (append nnheader-file-name-translation-alist
- (mapcar (lambda (c) (cons c ?_))
- '(?: ?* ?\" ?< ?> ??))
- (if (string-match "windows-nt\\|cygwin32"
- (symbol-name system-type))
- nil
- '((?+ . ?-)))))))))
-
(defvar gnus-tmp-unread)
(defvar gnus-tmp-replied)
(defvar gnus-tmp-score-char)
(defvar gnus-tmp-closing-bracket)
(defvar gnus-tmp-subject-or-nil)
(defvar gnus-check-before-posting)
+(defvar gnus-mouse-face)
+(defvar gnus-group-buffer)
(defun gnus-ems-redefine ()
(cond
;; [Note] Now there are three kinds of mule implementations,
;; original MULE, XEmacs/mule and Emacs 20+ including
- ;; MULE features. Unfortunately these API are different. In
- ;; particular, Emacs (including original MULE) and XEmacs are
- ;; quite different. Howvere, this version of Gnus doesn't support
+ ;; MULE features. Unfortunately these APIs are different. In
+ ;; particular, Emacs (including original Mule) and XEmacs are
+ ;; quite different. However, this version of Gnus doesn't support
;; anything other than XEmacs 20+ and Emacs 20.3+.
;; Predicates to check are following:
- ;; (boundp 'MULE) is t only if MULE (original; anything older than
+ ;; (boundp 'MULE) is t only if Mule (original; anything older than
;; Mule 2.3) is running.
- ;; (featurep 'mule) is t when every mule variants are running.
+ ;; (featurep 'mule) is t when other mule variants are running.
;; It is possible to detect XEmacs/mule by (featurep 'mule) and
- ;; checking `emacs-version'. In this case, the implementation for
+ ;; (featurep 'xemacs). In this case, the implementation for
;; XEmacs/mule may be shareable between XEmacs and XEmacs/mule.
(defvar gnus-summary-display-table nil
gnus-mouse-face-prop gnus-mouse-face)
(insert " " gnus-tmp-subject-or-nil "\n")))))
+;; Clone of `appt-select-lowest-window' in appt.el.
+(defun gnus-select-lowest-window ()
+"Select the lowest window on the frame."
+ (let ((lowest-window (selected-window))
+ (bottom-edge (nth 3 (window-edges))))
+ (walk-windows (lambda (w)
+ (let ((next-bottom-edge (nth 3 (window-edges w))))
+ (when (< bottom-edge next-bottom-edge)
+ (setq bottom-edge next-bottom-edge
+ lowest-window w)))))
+ (select-window lowest-window)))
+
(defun gnus-region-active-p ()
"Say whether the region is active."
(and (boundp 'transient-mark-mode)
(boundp 'mark-active)
mark-active))
-(if (fboundp 'add-minor-mode)
- (defalias 'gnus-add-minor-mode 'add-minor-mode)
- (defun gnus-add-minor-mode (mode name map &rest rest)
- (set (make-local-variable mode) t)
- (unless (assq mode minor-mode-alist)
- (push `(,mode ,name) minor-mode-alist))
- (unless (assq mode minor-mode-map-alist)
- (push (cons mode map)
- minor-mode-map-alist))))
+(defun gnus-mark-active-p ()
+ "Non-nil means the mark and region are currently active in this buffer."
+ mark-active) ; aliased to region-exists-p in XEmacs.
+
+(autoload 'gnus-alive-p "gnus-util")
+(autoload 'mm-disable-multibyte "mm-util")
(defun gnus-x-splash ()
"Show a splash screen using a pixmap in the current buffer."
- (let ((dir (nnheader-find-etc-directory "gnus"))
- pixmap file height beg i)
- (save-excursion
- (switch-to-buffer (gnus-get-buffer-create gnus-group-buffer))
- (let ((buffer-read-only nil)
- width height)
- (erase-buffer)
- (when (and dir
- (file-exists-p (setq file
- (expand-file-name "x-splash" dir))))
- (with-temp-buffer
- (insert-file-contents file)
- (goto-char (point-min))
- (ignore-errors
- (setq pixmap (read (current-buffer))))))
- (when pixmap
- (make-face 'gnus-splash)
- (setq height (/ (car pixmap) (frame-char-height))
- width (/ (cadr pixmap) (frame-char-width)))
- (set-face-foreground 'gnus-splash "Brown")
- (set-face-stipple 'gnus-splash pixmap)
- (insert-char ?\n (* (/ (window-height) 2 height) height))
- (setq i height)
- (while (> i 0)
- (insert-char ?\ (* (/ (window-width) 2 width) width))
- (setq beg (point))
- (insert-char ?\ width)
- (set-text-properties beg (point) '(face gnus-splash))
- (insert ?\n)
- (decf i))
- (goto-char (point-min))
- (sit-for 0))))))
-
-(defvar gnus-article-xface-ring-internal nil
- "Cache for face data.")
-
-;; Worth customizing?
-(defvar gnus-article-xface-ring-size 6
- "Length of the ring used for `gnus-article-xface-ring-internal'.")
-
-(defvar gnus-article-compface-xbm
- (condition-case ()
- (eq 0 (string-match "#define"
- (shell-command-to-string "uncompface -X")))
- (error nil))
- "Non-nil means the compface program supports the -X option.
-That produces XBM output.")
-
-(defun gnus-article-display-xface (beg end &optional buffer)
- "Display an XFace header from between BEG and END in BUFFER.
-Requires support for images in your Emacs and the external programs
-`uncompface', and `icontopbm'. On a GNU/Linux system these
-might be in packages with names like `compface' or `faces-xface' and
-`netpbm' or `libgr-progs', for instance. See also
-`gnus-article-compface-xbm'.
-
-This function is for Emacs 21+. See `gnus-xmas-article-display-xface'
-for XEmacs."
- ;; It might be worth converting uncompface's output in Lisp.
-
- (when (if (fboundp 'display-graphic-p)
- (display-graphic-p))
- (unless gnus-article-xface-ring-internal ; Only load ring when needed.
- (setq gnus-article-xface-ring-internal
- (make-ring gnus-article-xface-ring-size)))
- (save-excursion
- (let* ((cur (current-buffer))
- (data (if buffer
- (with-current-buffer buffer
- (buffer-substring beg end))
- (buffer-substring beg end)))
- (image (cdr-safe (assoc data (ring-elements
- gnus-article-xface-ring-internal))))
- default-enable-multibyte-characters)
- (unless image
- (with-temp-buffer
- (insert data)
- (and (eq 0 (apply #'call-process-region (point-min) (point-max)
- "uncompface"
- 'delete '(t nil) nil
- (if gnus-article-compface-xbm
- '("-X"))))
- (if gnus-article-compface-xbm
- t
- (goto-char (point-min))
- (progn (insert "/* Width=48, Height=48 */\n") t)
- (eq 0 (call-process-region (point-min) (point-max)
- "icontopbm"
- 'delete '(t nil))))
- ;; Miles Bader says that faces don't look right as
- ;; light on dark.
- (if (eq 'dark (cdr-safe (assq 'background-mode
- (frame-parameters))))
- (setq image (create-image (buffer-string)
- (if gnus-article-compface-xbm
- 'xbm
- 'pbm)
- t
- :ascent 'center
- :foreground "black"
- :background "white"))
- (setq image (create-image (buffer-string)
- (if gnus-article-compface-xbm
- 'xbm
- 'pbm)
- t
- :ascent 'center)))))
- (ring-insert gnus-article-xface-ring-internal (cons data image)))
- (when image
- (goto-char (point-min))
- (re-search-forward "^From:" nil 'move)
- (insert-image image))))))
+ (interactive)
+ (unless window-system
+ (error "`gnus-x-splash' requires running on the window system"))
+ (switch-to-buffer (gnus-get-buffer-create (if (or (gnus-alive-p)
+ (interactive-p))
+ "*gnus-x-splash*"
+ gnus-group-buffer)))
+ (let ((inhibit-read-only t)
+ (file (nnheader-find-etc-directory "images/gnus/x-splash" t))
+ pixmap fcw fch width height fringes sbars left yoffset top ls)
+ (erase-buffer)
+ (sit-for 0) ;; Necessary for measuring the window size correctly.
+ (when (and file
+ (ignore-errors
+ (let ((coding-system-for-read 'raw-text))
+ (with-temp-buffer
+ (mm-disable-multibyte)
+ (insert-file-contents file)
+ (goto-char (point-min))
+ (setq pixmap (read (current-buffer)))))))
+ (setq fcw (float (frame-char-width))
+ fch (float (frame-char-height))
+ width (/ (car pixmap) fcw)
+ height (/ (cadr pixmap) fch)
+ fringes (if (fboundp 'window-fringes)
+ (eval '(window-fringes))
+ '(10 11 nil))
+ sbars (frame-parameter nil 'vertical-scroll-bars))
+ (cond ((eq sbars 'right)
+ (setq sbars
+ (cons 0 (/ (or (frame-parameter nil 'scroll-bar-width) 14)
+ fcw))))
+ (sbars
+ (setq sbars
+ (cons (/ (or (frame-parameter nil 'scroll-bar-width) 14)
+ fcw)
+ 0)))
+ (t
+ (setq sbars '(0 . 0))))
+ (setq left (- (* (round (/ (1- (/ (+ (window-width)
+ (car sbars) (cdr sbars)
+ (/ (+ (or (car fringes) 0)
+ (or (cadr fringes) 0))
+ fcw))
+ width))
+ 2))
+ width)
+ (car sbars)
+ (/ (or (car fringes) 0) fcw))
+ yoffset (cadr (window-edges))
+ top (max 0 (- (* (max (if (and (boundp 'tool-bar-mode)
+ tool-bar-mode
+ (not (featurep 'gtk))
+ (eq (frame-first-window)
+ (selected-window)))
+ 1 0)
+ (round (/ (1- (/ (+ (1- (window-height))
+ (* 2 yoffset))
+ height))
+ 2)))
+ height)
+ yoffset))
+ ls (/ (or line-spacing 0) fch)
+ height (max 0 (- height ls)))
+ (cond ((>= (- top ls) 1)
+ (insert
+ (propertize
+ " "
+ 'display `(space :width 0 :ascent 100))
+ "\n"
+ (propertize
+ " "
+ 'display `(space :width 0 :height ,(- top ls 1) :ascent 100))
+ "\n"))
+ ((> (- top ls) 0)
+ (insert
+ (propertize
+ " "
+ 'display `(space :width 0 :height ,(- top ls) :ascent 100))
+ "\n")))
+ (if (and (> width 0) (> left 0))
+ (insert (propertize
+ " "
+ 'display `(space :width ,left :height ,height :ascent 0)))
+ (setq width (+ width left)))
+ (when (> width 0)
+ (insert (propertize
+ " "
+ 'display `(space :width ,width :height ,height :ascent 0)
+ 'face `(gnus-splash :stipple ,pixmap))))
+ (goto-char (if (<= (- top ls) 0) (1- (point)) (point-min)))
+ (redraw-frame (selected-frame))
+ (sit-for 0))))
+
+;;; Image functions.
+
+(defun gnus-image-type-available-p (type)
+ (and (fboundp 'image-type-available-p)
+ (image-type-available-p type)
+ (if (fboundp 'display-images-p)
+ (display-images-p)
+ t)))
+
+(defun gnus-create-image (file &optional type data-p &rest props)
+ (let ((face (plist-get props :face)))
+ (when face
+ (setq props (plist-put props :foreground (face-foreground face)))
+ (setq props (plist-put props :background (face-background face))))
+ (apply 'create-image file type data-p props)))
+
+(defun gnus-put-image (glyph &optional string category)
+ (let ((point (point)))
+ (insert-image glyph (or string " "))
+ (put-text-property point (point) 'gnus-image-category category)
+ (unless string
+ (put-text-property (1- (point)) (point)
+ 'gnus-image-text-deletable t))
+ glyph))
+
+(defun gnus-remove-image (image &optional category)
+ "Remove the image matching IMAGE and CATEGORY found first."
+ (let ((start (point-min))
+ val end)
+ (while (and (not end)
+ (or (setq val (get-text-property start 'display))
+ (and (setq start
+ (next-single-property-change start 'display))
+ (setq val (get-text-property start 'display)))))
+ (setq end (or (next-single-property-change start 'display)
+ (point-max)))
+ (if (and (equal val image)
+ (equal (get-text-property start 'gnus-image-category)
+ category))
+ (progn
+ (put-text-property start end 'display nil)
+ (when (get-text-property start 'gnus-image-text-deletable)
+ (delete-region start end)))
+ (unless (= end (point-max))
+ (setq start end
+ end nil))))))
(provide 'gnus-ems)
+;; arch-tag: e7360b45-14b5-4171-aa39-69a44aed3cdb
;;; gnus-ems.el ends here