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;; gnus-bitmap.el -- bitmap utilities for gnus.
;; Copyright (C) 1999, 2000, 2001 Free Software Foundation, Inc.
;; Author: KORIYAMA Naohiro <kory@ba2.so-net.ne.jp>
;; Katsumi Yamaoka <yamaoka@jpl.org>
;; Tatsuya Ichikawa <ichikawa@erc.epson.com>
;; Created: 1999/08/20
;; Revised: 2001/02/02
;; Keywords: bitmap, x-face, splash, gnus
;; This file is part of BITMAP-MULE.
;; This program 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.
;; This program is distributed in the hope that it will be useful,
;; but WITHOUT ANY WARRANTY; without even the implied warranty of
;; MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
;; GNU General Public License for more details.
;; You should have received a copy of the GNU General Public License
;; along with this program; see the file COPYING. If not, write to the
;; Free Software Foundation, Inc., 59 Temple Place - Suite 330,
;; Boston, MA 02111-1307, USA.
;;; Commentary:
;; How to use:
;; If you would like to splash the startup screen with bitmap image,
;; put the following lines in your .emacs file before gnus is loaded.
;;
;; ;; It must be placed in .emacs file before gnus.el(c) is loaded.
;; (if window-system
;; (progn
;; (autoload 'gnus-bitmap-splash "gnus-bitmap")
;; (add-hook 'gnus-load-hook 'gnus-bitmap-splash)))
;;
;; Or you can inhibit the use of bitmap images (except for X-Face) as
;; follows.
;;
;; (setq gnus-bitmap-splash-image nil
;; gnus-bitmap-modeline-image nil)
;;; Code:
(eval-when-compile
(require 'cl)
(require 'static))
(require 'pcustom)
(require 'alist)
(require 'bitmap)
(require 'x-face-mule)
;;; Internal variables and the related functions.
;;
(eval-when-compile
(defmacro gnus-bitmap-splash-image-internal ()
(let ((file (expand-file-name "gnus.xbm"
(if (string-match "/tm/$" default-directory)
"../bitmap-mule/";; tm-8
"./"))))
(if (file-exists-p file)
(progn
(message " ++ decoding internal image for splashing...")
(bitmap-decode-xbm (bitmap-read-xbm-file file)))
(byte-compile-warn "Warning: file \"gnus.xbm\" not found.")
nil)))
(defmacro gnus-bitmap-modeline-image-internal ()
(let ((file (expand-file-name "gnus-pointer.xbm"
(if (string-match "/tm/$" default-directory)
"../bitmap-mule/";; tm-8
"./"))))
(if (file-exists-p file)
(progn
(message
" ++ decoding internal image for modeline identifier...")
(bitmap-decode-xbm (bitmap-read-xbm-file file)))
(byte-compile-warn "Warning: file \"gnus-pointer.xbm\" not found.")
nil)))
(defmacro gnus-bitmap-xbm-to-bitmap (cmp)
(` (let ((cmp (, cmp)))
(if cmp
(let ((len (length cmp))
(bitmap (bitmap-compose (aref cmp 0)))
(i 1))
(while (< i len)
(setq bitmap (concat bitmap "\n"
(bitmap-compose (aref cmp i)))
i (1+ i)))
bitmap))))))
(defconst gnus-bitmap-splash-image-internal
(gnus-bitmap-xbm-to-bitmap (gnus-bitmap-splash-image-internal)))
(defconst gnus-bitmap-modeline-image-internal
(gnus-bitmap-xbm-to-bitmap (gnus-bitmap-modeline-image-internal)))
(defvar gnus-bitmap-splash-image-data nil)
(defvar gnus-bitmap-modeline-identifier nil)
(eval-when-compile
(makunbound 'gnus-bitmap-broken-facility-check)
(defcustom gnus-bitmap-broken-facility-check t
"The value t means `:set' does not work at the loading time. For instance
it will be occurred under Mule 2.3 based on Emacs 19.34 using custom-1.9962."
:set (function (lambda (symbol value) (set-default symbol nil)))))
(static-if gnus-bitmap-broken-facility-check
(progn
(defun gnus-bitmap-set-splash-image-data (arg)
(setq gnus-bitmap-splash-image-data
(cond ((eq 'internal arg)
gnus-bitmap-splash-image-internal)
((and (stringp arg) (file-exists-p arg))
(gnus-bitmap-xbm-to-bitmap arg)))))
(defun gnus-bitmap-set-modeline-image-data (arg)
(setq gnus-bitmap-modeline-identifier
(cond ((eq 'internal arg)
gnus-bitmap-modeline-image-internal)
((and (stringp arg) (file-exists-p arg))
(gnus-bitmap-xbm-to-bitmap arg))))))
(defmacro gnus-bitmap-set-splash-image-data (arg)
(` (setq gnus-bitmap-splash-image-data
(cond ((eq 'internal (, arg))
gnus-bitmap-splash-image-internal)
((and (stringp (, arg)) (file-exists-p (, arg)))
(gnus-bitmap-xbm-to-bitmap (, arg)))))))
(defmacro gnus-bitmap-set-modeline-image-data (arg)
(` (setq gnus-bitmap-modeline-identifier
(cond ((eq 'internal (, arg))
gnus-bitmap-modeline-image-internal)
((and (stringp (, arg)) (file-exists-p (, arg)))
(gnus-bitmap-xbm-to-bitmap (, arg))))))))
;;; Options.
;;
(defcustom x-face-mule-gnus-force-decode-headers nil
"If non-nil, display X-Face even if `gnus-show-mime' is nil."
:type 'boolean
:group 'x-face-mule)
(defcustom gnus-bitmap-splash-image 'internal
"If it is the symbol `internal', use the internal image for splashing
the startup screen. It can also be a name of XBM file. If it is nil,
bitmap image is not used."
:type (list 'radio
(list 'const :tag
(concat "Internal image\n"
gnus-bitmap-splash-image-internal)
'internal)
'(file :tag "XBM file")
'(const :tag "Off" nil))
:set (function
(lambda (symbol value)
(gnus-bitmap-set-splash-image-data value)
(set-default symbol value)))
:group 'bitmap-mule
:group 'gnus-start)
(defcustom gnus-bitmap-modeline-image 'internal
"If it is the symbol `internal', use the internal image for displaying
a nifty image in the modeline. It can also be a name of XBM file. If it
is nil or the value of `emacs-major-version' is less than 20, bitmap image
is not used."
:type (list 'radio
(list 'const :tag
(concat "Internal image ["
gnus-bitmap-modeline-image-internal "]")
'internal)
'(file :tag "XBM file")
'(const :tag "Off" nil))
:set (function
(lambda (symbol value)
(gnus-bitmap-set-modeline-image-data value)
(set-default symbol value)))
:group 'bitmap-mule
:group 'gnus-start)
(static-when gnus-bitmap-broken-facility-check
(gnus-bitmap-set-splash-image-data gnus-bitmap-splash-image)
(gnus-bitmap-set-modeline-image-data gnus-bitmap-modeline-image))
;;; Avoid byte compile warnings.
;;
(defvar gnus-article-buffer)
(defvar gnus-article-display-hook)
(defvar gnus-article-x-face-command)
(defvar gnus-ignored-headers)
(defvar gnus-mule-bitmap-image-file)
(defvar gnus-simple-splash)
(defvar gnus-strict-mime)
(defvar gnus-treat-display-x-face)
(defvar gnus-treat-display-xface)
(defvar gnus-treat-hide-headers)
(defvar gnus-version)
(defvar gnus-visible-headers)
(defvar last)
(eval-when-compile
(fset 'gnus-bitmap-original-gnus-group-startup-message 'ignore)
(autoload 'article-goto-body "gnus-art")
(autoload 'gnus-indent-rigidly "gnus")
(autoload 'gnus-splash "gnus")
(autoload 'gnus-summary-select-article "gnus-sum"))
;;; X-Face functions.
;;
;;;###autoload
(defun x-face-mule-gnus-article-display-x-face (&rest args)
"Decode and show X-Face. The buffer is expected to be narrowed to just the
headers of the article. If `gnus-article-x-face-command' is set to the
symbol of this function, gnus will call it for each X-Face fields. So we
set the bound variable `last' to T in order to make good use of time."
(when window-system
(let ((x-face-mule-highlight-x-face-style
(if (and (eq x-face-mule-highlight-x-face-style 'xmas)
(memq this-command
'(gnus-summary-toggle-mime)))
'default
x-face-mule-highlight-x-face-style))
x-face-mule-preserve-original-from-field)
(x-face-mule-x-face-decode-message-header-1)
(x-face-mule-highlight-header)))
(setq last t))
(defun x-face-mule-gnus-highlight-headers-if-no-mime ()
"Decode and show X-Face even if `gnus-show-mime' is nil. It is
controlled by the value of `x-face-mule-gnus-force-decode-headers'."
(when (and x-face-mule-gnus-force-decode-headers
(eq major-mode 'gnus-article-mode)
(memq x-face-mule-highlight-x-face-position '(from x-face)))
(x-face-decode-message-header)))
;;; Splash the startup screen.
;;
(defun gnus-bitmap-sit-for-0 ()
(remove-hook 'gnus-startup-hook 'gnus-bitmap-sit-for-0)
(sit-for 0))
(defun gnus-bitmap-startup-message (&optional x y)
"Insert startup message in current buffer."
(if (null gnus-bitmap-splash-image-data)
(gnus-bitmap-original-gnus-group-startup-message x y)
(erase-buffer)
(insert gnus-version "\n")
(let ((fill-column (1- (window-width))))
(center-region (point-min) (point-max)))
(let ((start (point))
width)
;; Insert an image.
(insert gnus-bitmap-splash-image-data)
(setq width (current-column))
(insert "\n")
;; And then hack it.
(gnus-indent-rigidly start (point)
(/ (max (- (window-width) (or x (1- width))) 0) 2))
(goto-char start)
(insert-char
?\n (/ (max 0 (- (window-height) (count-lines start (point-max)))) 2)))
;; Fontify some.
(put-text-property (point-min) (point-max) 'face 'gnus-splash-face)
(goto-char (point-min))
(setq mode-line-buffer-identification gnus-version)
(setq gnus-simple-splash nil)
(set-buffer-modified-p t)
;; Redisplay after `gnus-startup-hook' is evaluated.
(add-hook 'gnus-startup-hook 'gnus-bitmap-sit-for-0 'append)))
;;; Modeline identification.
;;
(defun gnus-bitmap-mode-line-buffer-identification (line)
(let ((l (car line)))
(if (and (stringp l) gnus-bitmap-modeline-identifier)
(list gnus-bitmap-modeline-identifier
(if (string-match "^Gnus: *" l)
(substring l (match-end 0))
l))
line)))
;;; Setup.
;;
(set-alist 'x-face-mule-highlight-x-face-refresh-method-alist
'gnus-summary-mode
(function (lambda () (gnus-summary-select-article nil t))))
(when window-system
(add-hook 'gnus-exit-gnus-hook 'x-face-mule-save-cache-file))
(defun gnus-bitmap-redefine (&optional splash)
"Redifine variables and functions for the use of BITMAP-MULE. If SPLASH
is non-nil, the function `gnus-group-startup-message' is also redefined
and splashing the startup screen with a bitmap image."
(require 'gnus-art)
(setq gnus-strict-mime nil)
;; Modify `gnus-visible-headers' and `gnus-ignored-headers'.
(cond ((stringp gnus-visible-headers)
(let ((xf (string-match gnus-visible-headers "X-Face:"))
(xfi (string-match gnus-visible-headers "X-Face-Img:")))
(cond ((not (or xf xfi))
(setq gnus-visible-headers
(format "\\(%s\\)\\|^X-Face:\\|^X-Face-Img:"
gnus-visible-headers)))
((not xf)
(setq gnus-visible-headers
(format "\\(%s\\)\\|^X-Face:"
gnus-visible-headers)))
((not xfi)
(setq gnus-visible-headers
(format "\\(%s\\)\\|^X-Face-Img:"
gnus-visible-headers))))))
((consp gnus-visible-headers)
(unless (member "^X-Face:" gnus-visible-headers)
(setq gnus-visible-headers
(append gnus-visible-headers '("^X-Face:"))))
(unless (member "^X-Face-Img:" gnus-visible-headers)
(setq gnus-visible-headers
(append gnus-visible-headers '("^X-Face-Img:")))))
((stringp gnus-ignored-headers)
(let ((regexp (format "\\\\|%s\\|%s\\\\|%s"
"\\^?X-Face\\(-Img\\)?:"
"\\^?X-Face\\(-Img\\)?:"
"\\^?X-Face\\(-Img\\)?:")))
(while (string-match regexp gnus-ignored-headers)
(setq gnus-ignored-headers
(concat (substring gnus-ignored-headers 0
(match-beginning 0))
(substring gnus-ignored-headers
(match-end 0)))))))
((consp gnus-ignored-headers)
(when (member "^X-Face:" gnus-ignored-headers)
(setq gnus-ignored-headers
(delete "^X-Face:" gnus-ignored-headers)))
(when (member "^X-Face-Img:" gnus-ignored-headers)
(setq gnus-ignored-headers
(delete "^X-Face-Img:" gnus-ignored-headers)))))
(cond ((boundp 'gnus-treat-display-x-face)
;; Gnus v5.10.3, T-gnus 6.16.3 or later.
(setq
gnus-treat-display-x-face
(if (and (featurep 'running-pterodactyl-gnus-0_73-or-later); T-gnus
(not x-face-mule-gnus-force-decode-headers))
'(and mime head)
'head)
gnus-treat-hide-headers 'head
gnus-article-x-face-command
'x-face-mule-gnus-article-display-x-face))
((boundp 'gnus-treat-display-xface)
;; Pterodactyl Gnus, T-gnus 6.10.064 or later.
(setq
gnus-treat-display-xface
(if (and (featurep 'running-pterodactyl-gnus-0_73-or-later); T-gnus
(not x-face-mule-gnus-force-decode-headers))
'(and mime head)
'head)
gnus-treat-hide-headers 'head
gnus-article-x-face-command
'x-face-mule-gnus-article-display-x-face)))
;; Advise the hiding function.
(defadvice article-hide-headers (after x-face-mule-highlight-header
activate)
"Highlight X-Face field(s) after `article-hide-headers' is done."
(x-face-mule-highlight-header))
;; Gnus 5.7, Semi-gnus 6.10, Nana-gnus 6.13 or earlier.
(when (and (boundp 'gnus-article-display-hook)
(or (memq 'gnus-article-hide-headers-if-wanted
gnus-article-display-hook)
(memq 'gnus-article-maybe-highlight
gnus-article-display-hook)))
(remove-hook 'gnus-article-display-hook 'gnus-article-display-x-face)
(add-hook 'gnus-article-display-hook
'x-face-mule-gnus-highlight-headers-if-no-mime 'append))
;; Redifine the splash function.
(when splash
(unless (fboundp 'gnus-bitmap-original-gnus-group-startup-message)
(fset 'gnus-bitmap-original-gnus-group-startup-message
(symbol-function 'gnus-group-startup-message)))
(fset 'gnus-group-startup-message 'gnus-bitmap-startup-message)
;; Splash the screen when `gnus' is being loaded.
(unless (featurep 'gnus)
(gnus-splash)))
;; Invalidate the old style splashing feature.
(when (boundp 'gnus-mule-bitmap-image-file)
(setq gnus-mule-bitmap-image-file nil))
(when (>= emacs-major-version 20)
;; Redifine the modeline identify function.
(fset 'gnus-mode-line-buffer-identification
'gnus-bitmap-mode-line-buffer-identification)))
;;;###autoload
(defun gnus-bitmap-splash ()
"Splash the startup screen. This function has only limited use for
`gnus-load-hook' which should be set before `gnus' is loaded."
(when (and window-system
(not (featurep 'gnus))
gnus-bitmap-splash-image-data)
;; Suppress splashing with an ascii picture.
(setq this-command nil)
(let ((fns (cdr (assoc "gnus" after-load-alist))))
(if fns
(put-alist 'gnus-bitmap-redefine '(t) fns)
(eval-after-load "gnus" '(gnus-bitmap-redefine 'splash))))))
(eval-and-compile (autoload 'smiley-toggle-buffer "smiley-mule"))
;;;###autoload
(defun gnus-smiley-display (&optional arg)
"Display \"smileys\" as small graphical icons.
With arg, turn displaying on if and only if arg is positive."
(interactive "P")
(if window-system
(save-excursion
(set-buffer gnus-article-buffer)
(save-restriction
(widen)
(article-goto-body)
(narrow-to-region (point) (point-max))
(let ((inhibit-read-only t)
buffer-read-only)
(smiley-toggle-buffer arg))))
(when (interactive-p)
(message "You're not under window system."))))
(provide 'gnus-bitmap)
;; gnus-bitmap.el ends here
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