1;;; mh-print.el --- MH-E printing support
2
3;; Copyright (C) 2003, 2004, 2005, 2006, 2007 Free Software Foundation, Inc.
4
5;; Author: Jeffrey C Honig <jch@honig.net>
6;; Maintainer: Bill Wohler <wohler@newt.com>
7;; Keywords: mail
8;; See: mh-e.el
9
10;; This file is part of GNU Emacs.
11
12;; GNU Emacs is free software; you can redistribute it and/or modify
13;; it under the terms of the GNU General Public License as published by
14;; the Free Software Foundation; either version 2, or (at your option)
15;; any later version.
16
17;; GNU Emacs is distributed in the hope that it will be useful,
18;; but WITHOUT ANY WARRANTY; without even the implied warranty of
19;; MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
20;; GNU General Public License for more details.
21
22;; You should have received a copy of the GNU General Public License
23;; along with GNU Emacs; see the file COPYING.  If not, write to the
24;; Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
25;; Boston, MA 02110-1301, USA.
26
27;;; Commentary:
28
29;;; Change Log:
30
31;;; Code:
32
33(require 'mh-e)
34(require 'mh-scan)
35
36(require 'ps-print)
37
38(defvar mh-ps-print-color-option ps-print-color-p
39  "Specify how buffer's text color is printed.
40
41Valid values are:
42
43   nil         - Do not print colors.
44   t           - Print colors.
45   black-white - Print colors on black/white printer.
46                 See also `ps-black-white-faces'.
47
48Any other value is treated as t. This variable is initialized
49from `ps-print-color-p'.")
50
51(defvar mh-ps-print-func 'ps-spool-buffer-with-faces
52  "Function to use to spool a buffer.
53
54Sensible choices are the functions `ps-spool-buffer' and
55`ps-spool-buffer-with-faces'.")
56
57;;;###mh-autoload
58(defun mh-ps-print-msg (range)
59  "Print RANGE\\<mh-folder-mode-map>.
60
61Check the documentation of `mh-interactive-range' to see how RANGE is
62read in interactive use.
63
64This command will print inline text attachments but will not decrypt
65messages. However, when a message is displayed in an MH-Show buffer,
66then that buffer is used verbatim for printing with the caveat that
67only text attachments, if opened inline, are printed. Therefore,
68encrypted messages can be printed by showing and decrypting them
69first.
70
71MH-E uses the \"ps-print\" package to do the printing, so you can
72customize the printing further by going to the `ps-print'
73customization group. This command does not use the options
74`mh-lpr-command-format' or `mh-print-background-flag'. See also the
75commands \\[mh-ps-print-toggle-color] and
76\\[mh-ps-print-toggle-faces]."
77  (interactive (list (mh-interactive-range "Print")))
78  (mh-ps-print-range range nil))
79
80(defun mh-ps-print-range (range file)
81  "Print RANGE to FILE.
82
83This is the function that actually does the work.
84If FILE is nil, then the messages are spooled to the printer."
85  (mh-iterate-on-range msg range
86    (unwind-protect
87        (mh-ps-spool-msg msg))
88    (mh-notate msg mh-note-printed mh-cmd-note))
89  (ps-despool file))
90
91(defun mh-ps-spool-msg (msg)
92  "Spool MSG."
93  (let* ((folder mh-current-folder)
94         (buffer (mh-in-show-buffer (mh-show-buffer)
95                   (if (not (equal (mh-msg-filename msg folder)
96                                   buffer-file-name))
97                       (get-buffer-create mh-temp-buffer)))))
98    (unwind-protect
99        (save-excursion
100          (if buffer
101              (let ((mh-show-buffer buffer))
102                (mh-display-msg msg folder)))
103          (mh-ps-spool-buffer (if buffer buffer mh-show-buffer)))
104      (if buffer
105          (kill-buffer buffer)))))
106
107(defun mh-ps-spool-buffer (buffer)
108  "Spool BUFFER."
109  (save-excursion
110    (set-buffer buffer)
111    (let ((ps-print-color-p mh-ps-print-color-option)
112          (ps-left-header
113           (list
114            (concat "(" (mh-get-header-field "Subject:") ")")
115            (concat "(" (mh-get-header-field "From:") ")")))
116          (ps-right-header
117           (list
118            "/pagenumberstring load"
119            (concat "(" (mh-get-header-field "Date:") ")"))))
120      (funcall mh-ps-print-func))))
121
122;;;###mh-autoload
123(defun mh-ps-print-msg-file (range file)
124  "Print RANGE to FILE\\<mh-folder-mode-map>.
125
126Check the documentation of `mh-interactive-range' to see how RANGE is
127read in interactive use.
128
129This command will print inline text attachments but will not decrypt
130messages. However, when a message is displayed in an MH-Show buffer,
131then that buffer is used verbatim for printing with the caveat that
132only text attachments, if opened inline, are printed. Therefore,
133encrypted messages can be printed by showing and decrypting them
134first.
135
136MH-E uses the \"ps-print\" package to do the printing, so you can
137customize the printing further by going to the `ps-print'
138customization group. This command does not use the options
139`mh-lpr-command-format' or `mh-print-background-flag'. See also the
140commands \\[mh-ps-print-toggle-color] and
141\\[mh-ps-print-toggle-faces]."
142  (interactive (list (mh-interactive-range "Print") (mh-ps-print-preprint 1)))
143  (mh-ps-print-range range file))
144
145(defun mh-ps-print-preprint (prefix-arg)
146  "Provide a better default file name for `ps-print-preprint'.
147Pass along the PREFIX-ARG to it."
148  (let ((buffer-file-name (format "mh-%s" (substring (buffer-name) 1))))
149    (ps-print-preprint prefix-arg)))
150
151;;;###mh-autoload
152(defun mh-ps-print-toggle-faces ()
153 "Toggle whether printing is done with faces or not.
154
155When faces are enabled, the printed message will look very
156similar to the message in the MH-Show buffer."
157 (interactive)
158 (if (eq mh-ps-print-func 'ps-spool-buffer-with-faces)
159     (progn
160       (setq mh-ps-print-func 'ps-spool-buffer)
161       (message "Printing without faces"))
162   (setq mh-ps-print-func 'ps-spool-buffer-with-faces)
163   (message "Printing with faces")))
164
165;;;###mh-autoload
166(defun mh-ps-print-toggle-color ()
167  "Toggle whether color is used in printing messages.
168
169Colors are emulated on black-and-white printers with shades of
170gray. This might produce illegible output, even if your screen
171colors only use shades of gray. If this is the case, try using
172this command to toggle between color, no color, and a black and
173white representation of the colors and see which works best. You
174change this setting permanently by customizing the option
175`ps-print-color-p'."
176 (interactive)
177 (if (eq mh-ps-print-color-option nil)
178     (progn
179       (setq mh-ps-print-color-option 'black-white)
180       (message "Colors will be printed as black & white"))
181   (if (eq mh-ps-print-color-option 'black-white)
182       (progn
183         (setq mh-ps-print-color-option t)
184         (message "Colors will be printed"))
185     (setq mh-ps-print-color-option nil)
186     (message "Colors will not be printed"))))
187
188;; Old non-PS based printing
189;;;###mh-autoload
190(defun mh-print-msg (range)
191  "Print RANGE the old fashioned way\\<mh-folder-mode-map>.
192
193The message is formatted with \"mhl\" (see option
194`mh-mhl-format-file') and printed with the \"lpr\" command (see
195option `mh-lpr-command-format').
196
197Check the documentation of `mh-interactive-range' to see how
198RANGE is read in interactive use.
199
200Consider using \\[mh-ps-print-msg] instead."
201  (interactive (list (mh-interactive-range "Print")))
202  (message "Printing...")
203  (let (msgs)
204    ;; Gather message numbers and add them to "printed" sequence.
205    (mh-iterate-on-range msg range
206      (mh-add-msgs-to-seq msg 'printed t)
207      (mh-notate nil mh-note-printed mh-cmd-note)
208      (push msg msgs))
209    (setq msgs (nreverse msgs))
210    ;; Print scan listing if we have more than one message.
211    (if (> (length msgs) 1)
212        (let* ((msgs-string
213                (mapconcat 'identity (mh-list-to-string
214                                      (mh-coalesce-msg-list msgs)) " "))
215               (lpr-command
216                (format mh-lpr-command-format
217                        (cond ((listp range)
218                               (format "Folder: %s, Messages: %s"
219                                       mh-current-folder msgs-string))
220                              ((symbolp range)
221                               (format "Folder: %s, Sequence: %s"
222                                       mh-current-folder range)))))
223               (scan-command
224                (format "scan %s | %s" msgs-string lpr-command)))
225          (if mh-print-background-flag
226              (mh-exec-cmd-daemon shell-file-name nil "-c" scan-command)
227            (call-process shell-file-name nil nil nil "-c" scan-command))))
228    ;; Print the messages
229    (dolist (msg msgs)
230      (let* ((mhl-command (format "%s %s %s"
231                                  (expand-file-name "mhl" mh-lib-progs)
232                                  (if mh-mhl-format-file
233                                      (format " -form %s" mh-mhl-format-file)
234                                    "")
235                                  (mh-msg-filename msg)))
236             (lpr-command
237              (format mh-lpr-command-format
238                      (format "%s/%s" mh-current-folder msg)))
239             (print-command
240              (format "%s | %s" mhl-command lpr-command)))
241        (if mh-print-background-flag
242            (mh-exec-cmd-daemon shell-file-name nil "-c" print-command)
243          (call-process shell-file-name nil nil nil "-c" print-command)))))
244  (message "Printing...done"))
245
246(provide 'mh-print)
247
248;; Local Variables:
249;; indent-tabs-mode: nil
250;; sentence-end-double-space: nil
251;; End:
252
253;; arch-tag: 8d84d50b-2a49-4d0d-b51e-ba9c9b6fc679
254;;; mh-print.el ends here
255