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94dbe99c TTN |
1 | ;;; doc-view.el --- View PDF/PostScript/DVI files in Emacs |
2 | ||
3 | ;; Copyright (C) 2007 Free Software Foundation, Inc. | |
4 | ;; | |
5 | ;; Author: Tassilo Horn <tassilo@member.fsf.org> | |
6 | ;; Maintainer: Tassilo Horn <tassilo@member.fsf.org> | |
7 | ;; Keywords: files, pdf, ps, dvi | |
94dbe99c TTN |
8 | |
9 | ;; This file is part of GNU Emacs. | |
10 | ||
11 | ;; GNU Emacs is free software; you can redistribute it and/or modify | |
12 | ;; it under the terms of the GNU General Public License as published by | |
13 | ;; the Free Software Foundation; either version 3, or (at your option) | |
14 | ;; any later version. | |
15 | ||
16 | ;; GNU Emacs is distributed in the hope that it will be useful, | |
17 | ;; but WITHOUT ANY WARRANTY; without even the implied warranty of | |
18 | ;; MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
19 | ;; GNU General Public License for more details. | |
20 | ||
21 | ;; You should have received a copy of the GNU General Public License | |
22 | ;; along with GNU Emacs; see the file COPYING. If not, write to the | |
23 | ;; Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor, | |
24 | ;; Boston, MA 02110-1301, USA. | |
25 | ||
26 | ;;; Requirements: | |
27 | ||
4b378e75 RS |
28 | ;; doc-view.el requires GNU Emacs 22.1 or newer. You also need Ghostscript, |
29 | ;; `dvipdfm' which comes with teTeX and `pdftotext', which comes with xpdf | |
640602f7 | 30 | ;; (http://www.foolabs.com/xpdf/) or poppler (http://poppler.freedesktop.org/). |
94dbe99c TTN |
31 | |
32 | ;;; Commentary: | |
33 | ||
34 | ;; DocView is a document viewer for Emacs. It converts PDF, PS and DVI files | |
35 | ;; to a set of PNG files, one PNG for each page, and displays the PNG images | |
36 | ;; inside an Emacs buffer. This buffer uses `doc-view-mode' which provides | |
37 | ;; convenient key bindings for browsing the document. | |
38 | ;; | |
640602f7 | 39 | ;; To use it simply open a document file with |
94dbe99c | 40 | ;; |
640602f7 | 41 | ;; C-x C-f ~/path/to/document RET |
94dbe99c | 42 | ;; |
640602f7 RS |
43 | ;; and the document will be converted and displayed, if your emacs supports png |
44 | ;; images. With `C-c C-c' you can toggle between the rendered images | |
1f75e53d | 45 | ;; representation and the source text representation of the document. |
94dbe99c TTN |
46 | ;; |
47 | ;; Since conversion may take some time all the PNG images are cached in a | |
48 | ;; subdirectory of `doc-view-cache-directory' and reused when you want to view | |
640602f7 RS |
49 | ;; that file again. To reconvert a document hit `g' (`doc-view-reconvert-doc') |
50 | ;; when displaying the document. To delete all cached files use | |
94dbe99c TTN |
51 | ;; `doc-view-clear-cache'. To open the cache with dired, so that you can tidy |
52 | ;; it out use `doc-view-dired-cache'. | |
53 | ;; | |
54 | ;; When conversion in underway the first page will be displayed as soon as it | |
55 | ;; is available and the available pages are refreshed every | |
56 | ;; `doc-view-conversion-refresh-interval' seconds. If that variable is nil the | |
57 | ;; pages won't be displayed before conversion of the document finished | |
58 | ;; completely. | |
59 | ;; | |
60 | ;; DocView lets you select a slice of the displayed pages. This slice will be | |
61 | ;; remembered and applied to all pages of the current document. This enables | |
62 | ;; you to cut away the margins of a document to save some space. To select a | |
63 | ;; slice you can use `doc-view-set-slice' (bound to `s s') which will query you | |
64 | ;; for the coordinates of the slice's top-left corner and its width and height. | |
65 | ;; A much more convenient way to do the same is offered by the command | |
66 | ;; `doc-view-set-slice-using-mouse' (bound to `s m'). After invokation you | |
67 | ;; only have to press mouse-1 at the top-left corner and drag it to the | |
68 | ;; bottom-right corner of the desired slice. To reset the slice use | |
69 | ;; `doc-view-reset-slice' (bound to `s r'). | |
70 | ;; | |
94dbe99c TTN |
71 | ;; You can also search within the document. The command `doc-view-search' |
72 | ;; (bound to `C-s') queries for a search regexp and initializes a list of all | |
73 | ;; matching pages and messages how many match-pages were found. After that you | |
7baca0fa JL |
74 | ;; can jump to the next page containing a match with an additional `C-s'. With |
75 | ;; `C-r' you can do the same, but backwards. To search for a new regexp give a | |
76 | ;; prefix arg to one of the search functions, e.g. by typing `C-u C-s'. The | |
77 | ;; searching works by using a plain text representation of the document. If | |
78 | ;; that doesn't already exist the first invokation of `doc-view-search' (or | |
79 | ;; `doc-view-search-backward') starts the conversion. When that finishes and | |
80 | ;; you're still viewing the document (i.e. you didn't switch to another buffer) | |
81 | ;; you're queried for the regexp then. | |
640602f7 RS |
82 | ;; |
83 | ;; Dired users can simply hit `v' on a document file. If it's a PS, PDF or DVI | |
84 | ;; it will be opened using `doc-view-mode'. | |
85 | ;; | |
94dbe99c TTN |
86 | |
87 | ;;; Configuration: | |
88 | ||
640602f7 RS |
89 | ;; If the images are too small or too big you should set the "-rXXX" option in |
90 | ;; `doc-view-ghostscript-options' to another value. (The bigger your screen, | |
91 | ;; the higher the value.) | |
94dbe99c TTN |
92 | ;; |
93 | ;; This and all other options can be set with the customization interface. | |
94 | ;; Simply do | |
95 | ;; | |
96 | ;; M-x customize-group RET doc-view RET | |
97 | ;; | |
98 | ;; and modify them to your needs. | |
99 | ||
34065e5e | 100 | ;;; Todo: |
94dbe99c | 101 | |
f4c75497 SM |
102 | ;; - better menu. |
103 | ;; - don't use `find-file'. | |
f4c75497 | 104 | ;; - Bind slicing to a drag event. |
05477667 SM |
105 | ;; - doc-view-fit-doc-to-window and doc-view-fit-window-to-doc. |
106 | ;; - zoom a the region around the cursor (like xdvi). | |
c17587fe SM |
107 | ;; - get rid of the silly arrow in the fringe. |
108 | ;; - improve anti-aliasing (pdf-utils gets it better). | |
f4c75497 | 109 | |
34065e5e JL |
110 | ;;;; About isearch support |
111 | ||
112 | ;; I tried implementing isearch by setting | |
113 | ;; `isearch-search-fun-function' buffer-locally, but that didn't | |
114 | ;; work too good. The function doing the real search was called | |
115 | ;; endlessly somehow. But even if we'd get that working no real | |
116 | ;; isearch feeling comes up due to the missing match highlighting. | |
117 | ;; Currently I display all lines containing a match in a tooltip and | |
118 | ;; each C-s or C-r jumps directly to the next/previous page with a | |
119 | ;; match. With isearch we could only display the current match. So | |
120 | ;; we had to decide if another C-s jumps to the next page with a | |
121 | ;; match (thus only the first match in a page will be displayed in a | |
122 | ;; tooltip) or to the next match, which would do nothing visible | |
123 | ;; (except the tooltip) if the next match is on the same page. | |
124 | ||
125 | ;; And it's much slower than the current search facility, because | |
126 | ;; isearch really searches for each step forward or backward wheras | |
127 | ;; the current approach searches once and then it knows to which | |
128 | ;; pages to jump. | |
129 | ||
130 | ;; Anyway, if someone with better isearch knowledge wants to give it a try, | |
131 | ;; feel free to do it. --Tassilo | |
132 | ||
133 | ;;; Code: | |
134 | ||
94dbe99c | 135 | (require 'dired) |
414dd971 | 136 | (require 'image-mode) |
7baca0fa | 137 | (require 'jka-compr) |
94dbe99c TTN |
138 | |
139 | ;;;; Customization Options | |
140 | ||
141 | (defgroup doc-view nil | |
142 | "In-buffer viewer for PDF, PostScript and DVI files." | |
143 | :link '(function-link doc-view) | |
144 | :version "22.2" | |
145 | :group 'applications | |
146 | :group 'multimedia | |
147 | :prefix "doc-view-") | |
148 | ||
c9a9a5e3 | 149 | (defcustom doc-view-ghostscript-program (executable-find "gs") |
94dbe99c | 150 | "Program to convert PS and PDF files to PNG." |
c9a9a5e3 | 151 | :type 'file |
94dbe99c TTN |
152 | :group 'doc-view) |
153 | ||
154 | (defcustom doc-view-ghostscript-options | |
6a658a30 RS |
155 | '("-dSAFER" ;; Avoid security problems when rendering files from untrusted |
156 | ;; sources. | |
157 | "-dNOPAUSE" "-sDEVICE=png16m" "-dTextAlphaBits=4" | |
05477667 | 158 | "-dBATCH" "-dGraphicsAlphaBits=4" "-dQUIET") |
4b378e75 | 159 | "A list of options to give to ghostscript." |
c9a9a5e3 | 160 | :type '(repeat string) |
94dbe99c TTN |
161 | :group 'doc-view) |
162 | ||
05477667 SM |
163 | (defcustom doc-view-resolution 100 |
164 | "Dots per inch resolution used to render the documents. | |
165 | Higher values result in larger images." | |
9efa445f DN |
166 | :type 'number |
167 | :group 'doc-view) | |
05477667 | 168 | |
c9a9a5e3 | 169 | (defcustom doc-view-dvipdfm-program (executable-find "dvipdfm") |
94dbe99c TTN |
170 | "Program to convert DVI files to PDF. |
171 | ||
172 | DVI file will be converted to PDF before the resulting PDF is | |
173 | converted to PNG." | |
c9a9a5e3 | 174 | :type 'file |
94dbe99c TTN |
175 | :group 'doc-view) |
176 | ||
c9a9a5e3 | 177 | (defcustom doc-view-ps2pdf-program (executable-find "ps2pdf") |
94dbe99c TTN |
178 | "Program to convert PS files to PDF. |
179 | ||
180 | PS files will be converted to PDF before searching is possible." | |
c9a9a5e3 | 181 | :type 'file |
94dbe99c TTN |
182 | :group 'doc-view) |
183 | ||
c9a9a5e3 | 184 | (defcustom doc-view-pdftotext-program (executable-find "pdftotext") |
94dbe99c TTN |
185 | "Program to convert PDF files to plain text. |
186 | ||
187 | Needed for searching." | |
c9a9a5e3 | 188 | :type 'file |
94dbe99c TTN |
189 | :group 'doc-view) |
190 | ||
c17587fe | 191 | (defcustom doc-view-cache-directory |
8aafd651 | 192 | (expand-file-name (format "docview%d" (user-uid)) |
bce6be12 | 193 | temporary-file-directory) |
94dbe99c | 194 | "The base directory, where the PNG images will be saved." |
c9a9a5e3 | 195 | :type 'directory |
94dbe99c TTN |
196 | :group 'doc-view) |
197 | ||
198 | (defcustom doc-view-conversion-buffer "*doc-view conversion output*" | |
199 | "The buffer where messages from the converter programs go to." | |
c9a9a5e3 | 200 | :type 'string |
94dbe99c TTN |
201 | :group 'doc-view) |
202 | ||
203 | (defcustom doc-view-conversion-refresh-interval 3 | |
1f75e53d GM |
204 | "Interval in seconds between refreshes of the DocView buffer while converting. |
205 | After such a refresh newly converted pages will be available for | |
94dbe99c TTN |
206 | viewing. If set to nil there won't be any refreshes and the |
207 | pages won't be displayed before conversion of the whole document | |
208 | has finished." | |
c9a9a5e3 | 209 | :type 'integer |
94dbe99c TTN |
210 | :group 'doc-view) |
211 | ||
212 | ;;;; Internal Variables | |
213 | ||
214 | (defvar doc-view-current-files nil | |
215 | "Only used internally.") | |
216 | ||
217 | (defvar doc-view-current-page nil | |
218 | "Only used internally.") | |
219 | ||
94dbe99c TTN |
220 | (defvar doc-view-current-converter-process nil |
221 | "Only used internally.") | |
222 | ||
223 | (defvar doc-view-current-timer nil | |
224 | "Only used internally.") | |
225 | ||
226 | (defvar doc-view-current-slice nil | |
227 | "Only used internally.") | |
228 | ||
229 | (defvar doc-view-current-cache-dir nil | |
230 | "Only used internally.") | |
231 | ||
232 | (defvar doc-view-current-search-matches nil | |
233 | "Only used internally.") | |
234 | ||
235 | (defvar doc-view-current-image nil | |
236 | "Only used internally.") | |
d99abf1b RS |
237 | |
238 | (defvar doc-view-current-overlay nil | |
239 | "Only used internally.") | |
240 | ||
241 | (defvar doc-view-pending-cache-flush nil | |
242 | "Only used internally.") | |
94dbe99c TTN |
243 | |
244 | (defvar doc-view-current-info nil | |
245 | "Only used internally.") | |
246 | ||
937cb3fb | 247 | (defvar doc-view-previous-major-mode nil |
640602f7 RS |
248 | "Only used internally.") |
249 | ||
250 | ;;;; DocView Keymaps | |
94dbe99c TTN |
251 | |
252 | (defvar doc-view-mode-map | |
253 | (let ((map (make-sparse-keymap))) | |
937cb3fb | 254 | (suppress-keymap map) |
94dbe99c TTN |
255 | ;; Navigation in the document |
256 | (define-key map (kbd "n") 'doc-view-next-page) | |
257 | (define-key map (kbd "p") 'doc-view-previous-page) | |
eb8d0216 SM |
258 | (define-key map (kbd "<next>") 'forward-page) |
259 | (define-key map (kbd "<prior>") 'backward-page) | |
260 | (define-key map [remap forward-page] 'doc-view-next-page) | |
261 | (define-key map [remap backward-page] 'doc-view-previous-page) | |
94dbe99c TTN |
262 | (define-key map (kbd "SPC") 'doc-view-scroll-up-or-next-page) |
263 | (define-key map (kbd "DEL") 'doc-view-scroll-down-or-previous-page) | |
264 | (define-key map (kbd "M-<") 'doc-view-first-page) | |
265 | (define-key map (kbd "M->") 'doc-view-last-page) | |
7656fe61 | 266 | (define-key map [remap goto-line] 'doc-view-goto-page) |
05477667 SM |
267 | ;; Zoom in/out. |
268 | (define-key map "+" 'doc-view-enlarge) | |
269 | (define-key map "-" 'doc-view-shrink) | |
94dbe99c TTN |
270 | ;; Killing/burying the buffer (and the process) |
271 | (define-key map (kbd "q") 'bury-buffer) | |
272 | (define-key map (kbd "k") 'doc-view-kill-proc-and-buffer) | |
937cb3fb | 273 | (define-key map (kbd "K") 'doc-view-kill-proc) |
94dbe99c TTN |
274 | ;; Slicing the image |
275 | (define-key map (kbd "s s") 'doc-view-set-slice) | |
276 | (define-key map (kbd "s m") 'doc-view-set-slice-using-mouse) | |
277 | (define-key map (kbd "s r") 'doc-view-reset-slice) | |
278 | ;; Searching | |
279 | (define-key map (kbd "C-s") 'doc-view-search) | |
280 | (define-key map (kbd "<find>") 'doc-view-search) | |
7baca0fa | 281 | (define-key map (kbd "C-r") 'doc-view-search-backward) |
94dbe99c | 282 | ;; Scrolling |
eb8d0216 SM |
283 | (define-key map [remap forward-char] 'image-forward-hscroll) |
284 | (define-key map [remap backward-char] 'image-backward-hscroll) | |
285 | (define-key map [remap next-line] 'image-next-line) | |
286 | (define-key map [remap previous-line] 'image-previous-line) | |
94dbe99c TTN |
287 | ;; Show the tooltip |
288 | (define-key map (kbd "C-t") 'doc-view-show-tooltip) | |
640602f7 RS |
289 | ;; Toggle between text and image display or editing |
290 | (define-key map (kbd "C-c C-c") 'doc-view-toggle-display) | |
640602f7 | 291 | ;; Reconvert the current document |
7656fe61 SM |
292 | (define-key map (kbd "g") 'revert-buffer) |
293 | (define-key map (kbd "r") 'revert-buffer) | |
94dbe99c | 294 | map) |
640602f7 RS |
295 | "Keymap used by `doc-view-mode' when displaying a doc as a set of images.") |
296 | ||
f4c75497 SM |
297 | (easy-menu-define doc-view-menu doc-view-mode-map |
298 | "Menu for Doc View mode." | |
299 | '("DocView" | |
300 | ["Set Slice" doc-view-set-slice-using-mouse] | |
301 | ["Set Slice (manual)" doc-view-set-slice] | |
302 | ["Reset Slice" doc-view-reset-slice] | |
303 | "---" | |
304 | ["Search" doc-view-search] | |
7baca0fa | 305 | ["Search Backwards" doc-view-search-backward] |
f4c75497 | 306 | ["Toggle display" doc-view-toggle-display] |
f4c75497 SM |
307 | )) |
308 | ||
937cb3fb | 309 | (defvar doc-view-minor-mode-map |
640602f7 RS |
310 | (let ((map (make-sparse-keymap))) |
311 | ;; Toggle between text and image display or editing | |
312 | (define-key map (kbd "C-c C-c") 'doc-view-toggle-display) | |
640602f7 | 313 | map) |
937cb3fb | 314 | "Keymap used by `doc-minor-view-mode'.") |
94dbe99c TTN |
315 | |
316 | ;;;; Navigation Commands | |
317 | ||
318 | (defun doc-view-goto-page (page) | |
319 | "View the page given by PAGE." | |
320 | (interactive "nPage: ") | |
321 | (let ((len (length doc-view-current-files))) | |
322 | (if (< page 1) | |
1ca678aa | 323 | (setq page 1) |
94dbe99c | 324 | (when (> page len) |
1ca678aa | 325 | (setq page len))) |
94dbe99c | 326 | (setq doc-view-current-page page |
1ca678aa MC |
327 | doc-view-current-info |
328 | (concat | |
329 | (propertize | |
330 | (format "Page %d of %d." | |
331 | doc-view-current-page | |
332 | len) 'face 'bold) | |
333 | ;; Tell user if converting isn't finished yet | |
334 | (if doc-view-current-converter-process | |
335 | " (still converting...)\n" | |
336 | "\n") | |
337 | ;; Display context infos if this page matches the last search | |
338 | (when (and doc-view-current-search-matches | |
339 | (assq doc-view-current-page | |
340 | doc-view-current-search-matches)) | |
341 | (concat (propertize "Search matches:\n" 'face 'bold) | |
342 | (let ((contexts "")) | |
343 | (dolist (m (cdr (assq doc-view-current-page | |
344 | doc-view-current-search-matches))) | |
345 | (setq contexts (concat contexts " - \"" m "\"\n"))) | |
346 | contexts))))) | |
94dbe99c | 347 | ;; Update the buffer |
c17587fe SM |
348 | (doc-view-insert-image (nth (1- page) doc-view-current-files) |
349 | :pointer 'arrow) | |
350 | (overlay-put doc-view-current-overlay 'help-echo doc-view-current-info) | |
351 | (goto-char (point-min)) | |
352 | ;; This seems to be needed for set-window-hscroll (in | |
353 | ;; image-forward-hscroll) to do something useful, I don't have time to | |
354 | ;; debug this now. :-( --Stef | |
355 | (forward-char))) | |
94dbe99c TTN |
356 | |
357 | (defun doc-view-next-page (&optional arg) | |
358 | "Browse ARG pages forward." | |
359 | (interactive "p") | |
360 | (doc-view-goto-page (+ doc-view-current-page (or arg 1)))) | |
361 | ||
362 | (defun doc-view-previous-page (&optional arg) | |
363 | "Browse ARG pages backward." | |
364 | (interactive "p") | |
365 | (doc-view-goto-page (- doc-view-current-page (or arg 1)))) | |
366 | ||
367 | (defun doc-view-first-page () | |
368 | "View the first page." | |
369 | (interactive) | |
370 | (doc-view-goto-page 1)) | |
371 | ||
372 | (defun doc-view-last-page () | |
373 | "View the last page." | |
374 | (interactive) | |
375 | (doc-view-goto-page (length doc-view-current-files))) | |
376 | ||
377 | (defun doc-view-scroll-up-or-next-page () | |
378 | "Scroll page up if possible, else goto next page." | |
379 | (interactive) | |
380 | (condition-case nil | |
381 | (scroll-up) | |
382 | (error (doc-view-next-page)))) | |
383 | ||
384 | (defun doc-view-scroll-down-or-previous-page () | |
385 | "Scroll page down if possible, else goto previous page." | |
386 | (interactive) | |
387 | (condition-case nil | |
388 | (scroll-down) | |
389 | (error (doc-view-previous-page) | |
1ca678aa | 390 | (goto-char (point-max))))) |
94dbe99c | 391 | |
937cb3fb GM |
392 | ;;;; Utility Functions |
393 | ||
640602f7 RS |
394 | (defun doc-view-kill-proc () |
395 | "Kill the current converter process." | |
396 | (interactive) | |
397 | (when doc-view-current-converter-process | |
937cb3fb GM |
398 | (kill-process doc-view-current-converter-process) |
399 | (setq doc-view-current-converter-process nil)) | |
640602f7 RS |
400 | (when doc-view-current-timer |
401 | (cancel-timer doc-view-current-timer) | |
402 | (setq doc-view-current-timer nil)) | |
403 | (setq mode-line-process nil)) | |
404 | ||
94dbe99c TTN |
405 | (defun doc-view-kill-proc-and-buffer () |
406 | "Kill the current converter process and buffer." | |
407 | (interactive) | |
640602f7 | 408 | (doc-view-kill-proc) |
94dbe99c | 409 | (when (eq major-mode 'doc-view-mode) |
94dbe99c TTN |
410 | (kill-buffer (current-buffer)))) |
411 | ||
c17587fe SM |
412 | (defun doc-view-make-safe-dir (dir) |
413 | (condition-case nil | |
414 | (let ((umask (default-file-modes))) | |
415 | (unwind-protect | |
416 | (progn | |
417 | ;; Create temp files with strict access rights. It's easy to | |
418 | ;; loosen them later, whereas it's impossible to close the | |
419 | ;; time-window of loose permissions otherwise. | |
420 | (set-default-file-modes #o0700) | |
421 | (make-directory dir)) | |
422 | ;; Reset the umask. | |
423 | (set-default-file-modes umask))) | |
424 | (file-already-exists | |
425 | (if (file-symlink-p dir) | |
426 | (error "Danger: %s points to a symbolic link" dir)) | |
427 | ;; In case it was created earlier with looser rights. | |
428 | ;; We could check the mode info returned by file-attributes, but it's | |
429 | ;; a pain to parse and it may not tell you what we want under | |
430 | ;; non-standard file-systems. So let's just say what we want and let | |
431 | ;; the underlying C code and file-system figure it out. | |
432 | ;; This also ends up checking a bunch of useful conditions: it makes | |
433 | ;; sure we have write-access to the directory and that we own it, thus | |
434 | ;; closing a bunch of security holes. | |
435 | (set-file-modes dir #o0700)))) | |
436 | ||
937cb3fb GM |
437 | (defun doc-view-current-cache-dir () |
438 | "Return the directory where the png files of the current doc should be saved. | |
439 | It's a subdirectory of `doc-view-cache-directory'." | |
440 | (if doc-view-current-cache-dir | |
441 | doc-view-current-cache-dir | |
c17587fe SM |
442 | ;; Try and make sure doc-view-cache-directory exists and is safe. |
443 | (doc-view-make-safe-dir doc-view-cache-directory) | |
444 | ;; Now compute the subdirectory to use. | |
937cb3fb GM |
445 | (setq doc-view-current-cache-dir |
446 | (file-name-as-directory | |
c17587fe SM |
447 | (expand-file-name |
448 | (let ((doc buffer-file-name)) | |
449 | (concat (file-name-nondirectory doc) | |
450 | "-" | |
451 | (with-temp-buffer | |
452 | (insert-file-contents-literally doc) | |
453 | (md5 (current-buffer))))) | |
454 | doc-view-cache-directory))))) | |
937cb3fb GM |
455 | |
456 | (defun doc-view-remove-if (predicate list) | |
457 | "Return LIST with all items removed that satisfy PREDICATE." | |
458 | (let (new-list) | |
459 | (dolist (item list (nreverse new-list)) | |
460 | (when (not (funcall predicate item)) | |
461 | (setq new-list (cons item new-list)))))) | |
462 | ||
789ab9d4 RS |
463 | ;;;###autoload |
464 | (defun doc-view-mode-p (type) | |
465 | "Return non-nil if image type TYPE is available for `doc-view'. | |
466 | Image types are symbols like `dvi', `postscript' or `pdf'." | |
467 | (and (display-graphic-p) | |
468 | (image-type-available-p 'png) | |
469 | (cond | |
470 | ((eq type 'dvi) | |
471 | (and (doc-view-mode-p 'pdf) | |
472 | doc-view-dvipdfm-program | |
473 | (executable-find doc-view-dvipdfm-program))) | |
474 | ((or (eq type 'postscript) (eq type 'ps) | |
475 | (eq type 'pdf)) | |
476 | (and doc-view-ghostscript-program | |
477 | (executable-find doc-view-ghostscript-program))) | |
478 | (t ;; unknown image type | |
479 | nil)))) | |
480 | ||
94dbe99c TTN |
481 | ;;;; Conversion Functions |
482 | ||
05477667 SM |
483 | (defvar doc-view-shrink-factor 1.125) |
484 | ||
485 | (defun doc-view-enlarge (factor) | |
486 | "Enlarge the document." | |
487 | (interactive (list doc-view-shrink-factor)) | |
488 | (set (make-local-variable 'doc-view-resolution) | |
489 | (* factor doc-view-resolution)) | |
490 | (doc-view-reconvert-doc)) | |
491 | ||
492 | (defun doc-view-shrink (factor) | |
493 | "Shrink the document." | |
494 | (interactive (list doc-view-shrink-factor)) | |
495 | (doc-view-enlarge (/ 1.0 factor))) | |
496 | ||
c17587fe | 497 | (defun doc-view-reconvert-doc () |
640602f7 RS |
498 | "Reconvert the current document. |
499 | Should be invoked when the cached images aren't up-to-date." | |
500 | (interactive) | |
f4c75497 SM |
501 | (doc-view-kill-proc) |
502 | ;; Clear the old cached files | |
503 | (when (file-exists-p (doc-view-current-cache-dir)) | |
504 | (dired-delete-file (doc-view-current-cache-dir) 'always)) | |
c17587fe | 505 | (doc-view-initiate-display)) |
94dbe99c TTN |
506 | |
507 | (defun doc-view-dvi->pdf-sentinel (proc event) | |
e48a5bf9 | 508 | "If DVI->PDF conversion was successful, convert the PDF to PNG now." |
94dbe99c TTN |
509 | (if (not (string-match "finished" event)) |
510 | (message "DocView: dvi->pdf process changed status to %s." event) | |
214abdd4 SM |
511 | (with-current-buffer (process-get proc 'buffer) |
512 | (setq doc-view-current-converter-process nil | |
513 | mode-line-process nil) | |
514 | ;; Now go on converting this PDF to a set of PNG files. | |
515 | (let* ((pdf (process-get proc 'pdf-file)) | |
516 | (png (expand-file-name "page-%d.png" | |
517 | (doc-view-current-cache-dir)))) | |
518 | (doc-view-pdf/ps->png pdf png))))) | |
94dbe99c TTN |
519 | |
520 | (defun doc-view-dvi->pdf (dvi pdf) | |
1f75e53d | 521 | "Convert DVI to PDF asynchronously." |
94dbe99c | 522 | (setq doc-view-current-converter-process |
640602f7 | 523 | (start-process "dvi->pdf" doc-view-conversion-buffer |
1ca678aa | 524 | doc-view-dvipdfm-program |
640602f7 RS |
525 | "-o" pdf dvi) |
526 | mode-line-process (list (format ":%s" doc-view-current-converter-process))) | |
94dbe99c | 527 | (set-process-sentinel doc-view-current-converter-process |
1ca678aa | 528 | 'doc-view-dvi->pdf-sentinel) |
94dbe99c TTN |
529 | (process-put doc-view-current-converter-process 'buffer (current-buffer)) |
530 | (process-put doc-view-current-converter-process 'pdf-file pdf)) | |
531 | ||
532 | (defun doc-view-pdf/ps->png-sentinel (proc event) | |
533 | "If PDF/PS->PNG conversion was successful, update the display." | |
534 | (if (not (string-match "finished" event)) | |
535 | (message "DocView: converter process changed status to %s." event) | |
214abdd4 SM |
536 | (with-current-buffer (process-get proc 'buffer) |
537 | (setq doc-view-current-converter-process nil | |
538 | mode-line-process nil) | |
539 | (when doc-view-current-timer | |
540 | (cancel-timer doc-view-current-timer) | |
541 | (setq doc-view-current-timer nil)) | |
542 | ;; Yippie, finished. Update the display! | |
543 | (doc-view-display buffer-file-name 'force)))) | |
94dbe99c TTN |
544 | |
545 | (defun doc-view-pdf/ps->png (pdf-ps png) | |
1f75e53d | 546 | "Convert PDF-PS to PNG asynchronously." |
94dbe99c | 547 | (setq doc-view-current-converter-process |
1ca678aa | 548 | (apply 'start-process |
640602f7 | 549 | (append (list "pdf/ps->png" doc-view-conversion-buffer |
1ca678aa MC |
550 | doc-view-ghostscript-program) |
551 | doc-view-ghostscript-options | |
05477667 | 552 | (list (format "-r%d" (round doc-view-resolution))) |
1ca678aa | 553 | (list (concat "-sOutputFile=" png)) |
640602f7 RS |
554 | (list pdf-ps))) |
555 | mode-line-process (list (format ":%s" doc-view-current-converter-process))) | |
94dbe99c | 556 | (process-put doc-view-current-converter-process |
1ca678aa | 557 | 'buffer (current-buffer)) |
94dbe99c | 558 | (set-process-sentinel doc-view-current-converter-process |
1ca678aa | 559 | 'doc-view-pdf/ps->png-sentinel) |
94dbe99c TTN |
560 | (when doc-view-conversion-refresh-interval |
561 | (setq doc-view-current-timer | |
1ca678aa | 562 | (run-at-time "1 secs" doc-view-conversion-refresh-interval |
937cb3fb | 563 | 'doc-view-display |
f4c75497 | 564 | buffer-file-name)))) |
94dbe99c TTN |
565 | |
566 | (defun doc-view-pdf->txt-sentinel (proc event) | |
567 | (if (not (string-match "finished" event)) | |
568 | (message "DocView: converter process changed status to %s." event) | |
569 | (let ((current-buffer (current-buffer)) | |
1ca678aa | 570 | (proc-buffer (process-get proc 'buffer))) |
214abdd4 SM |
571 | (with-current-buffer proc-buffer |
572 | (setq doc-view-current-converter-process nil | |
573 | mode-line-process nil) | |
574 | ;; If the user looks at the DocView buffer where the conversion was | |
575 | ;; performed, search anew. This time it will be queried for a regexp. | |
576 | (when (eq current-buffer proc-buffer) | |
577 | (doc-view-search nil)))))) | |
94dbe99c TTN |
578 | |
579 | (defun doc-view-pdf->txt (pdf txt) | |
1f75e53d | 580 | "Convert PDF to TXT asynchronously." |
94dbe99c | 581 | (setq doc-view-current-converter-process |
640602f7 | 582 | (start-process "pdf->txt" doc-view-conversion-buffer |
1ca678aa | 583 | doc-view-pdftotext-program "-raw" |
640602f7 RS |
584 | pdf txt) |
585 | mode-line-process (list (format ":%s" doc-view-current-converter-process))) | |
94dbe99c | 586 | (set-process-sentinel doc-view-current-converter-process |
1ca678aa | 587 | 'doc-view-pdf->txt-sentinel) |
94dbe99c TTN |
588 | (process-put doc-view-current-converter-process 'buffer (current-buffer))) |
589 | ||
590 | (defun doc-view-ps->pdf-sentinel (proc event) | |
591 | (if (not (string-match "finished" event)) | |
592 | (message "DocView: converter process changed status to %s." event) | |
214abdd4 SM |
593 | (with-current-buffer (process-get proc 'buffer) |
594 | (setq doc-view-current-converter-process nil | |
595 | mode-line-process nil) | |
596 | ;; Now we can transform to plain text. | |
597 | (doc-view-pdf->txt (process-get proc 'pdf-file) | |
598 | (expand-file-name "doc.txt" | |
599 | (doc-view-current-cache-dir)))))) | |
94dbe99c TTN |
600 | |
601 | (defun doc-view-ps->pdf (ps pdf) | |
602 | "Convert PS to PDF asynchronously." | |
94dbe99c | 603 | (setq doc-view-current-converter-process |
640602f7 | 604 | (start-process "ps->pdf" doc-view-conversion-buffer |
1ca678aa | 605 | doc-view-ps2pdf-program |
6a658a30 RS |
606 | ;; Avoid security problems when rendering files from |
607 | ;; untrusted sources. | |
937cb3fb GM |
608 | "-dSAFER" |
609 | ;; in-file and out-file | |
610 | ps pdf) | |
640602f7 | 611 | mode-line-process (list (format ":%s" doc-view-current-converter-process))) |
94dbe99c | 612 | (set-process-sentinel doc-view-current-converter-process |
1ca678aa | 613 | 'doc-view-ps->pdf-sentinel) |
94dbe99c TTN |
614 | (process-put doc-view-current-converter-process 'buffer (current-buffer)) |
615 | (process-put doc-view-current-converter-process 'pdf-file pdf)) | |
616 | ||
640602f7 | 617 | (defun doc-view-convert-current-doc () |
f4c75497 | 618 | "Convert `buffer-file-name' to a set of png files, one file per page. |
640602f7 RS |
619 | Those files are saved in the directory given by the function |
620 | `doc-view-current-cache-dir'." | |
c17587fe SM |
621 | ;; Let stale files still display while we recompute the new ones, so only |
622 | ;; flush the cache when the conversion is over. One of the reasons why it | |
623 | ;; is important to keep displaying the stale page is so that revert-buffer | |
624 | ;; preserves the horizontal/vertical scroll settings (which are otherwise | |
625 | ;; resets during the redisplay). | |
626 | (setq doc-view-pending-cache-flush t) | |
627 | (let ((png-file (expand-file-name "page-%d.png" | |
628 | (doc-view-current-cache-dir)))) | |
629 | (make-directory (doc-view-current-cache-dir)) | |
f4c75497 | 630 | (if (not (string= (file-name-extension buffer-file-name) "dvi")) |
1ca678aa | 631 | ;; Convert to PNG images. |
f4c75497 | 632 | (doc-view-pdf/ps->png buffer-file-name png-file) |
4b378e75 | 633 | ;; DVI files have to be converted to PDF before Ghostscript can process |
94dbe99c | 634 | ;; it. |
f4c75497 | 635 | (doc-view-dvi->pdf buffer-file-name |
c17587fe SM |
636 | (expand-file-name "doc.pdf" |
637 | doc-view-current-cache-dir))))) | |
94dbe99c | 638 | |
94dbe99c TTN |
639 | ;;;; Slicing |
640 | ||
641 | (defun doc-view-set-slice (x y width height) | |
642 | "Set the slice of the images that should be displayed. | |
643 | You can use this function to tell doc-view not to display the | |
644 | margins of the document. It prompts for the top-left corner (X | |
645 | and Y) of the slice to display and its WIDTH and HEIGHT. | |
646 | ||
647 | See `doc-view-set-slice-using-mouse' for a more convenient way to | |
648 | do that. To reset the slice use `doc-view-reset-slice'." | |
649 | (interactive | |
650 | (let* ((size (image-size doc-view-current-image t)) | |
1ca678aa MC |
651 | (a (read-number (format "Top-left X (0..%d): " (car size)))) |
652 | (b (read-number (format "Top-left Y (0..%d): " (cdr size)))) | |
653 | (c (read-number (format "Width (0..%d): " (- (car size) a)))) | |
654 | (d (read-number (format "Height (0..%d): " (- (cdr size) b))))) | |
94dbe99c TTN |
655 | (list a b c d))) |
656 | (setq doc-view-current-slice (list x y width height)) | |
657 | ;; Redisplay | |
658 | (doc-view-goto-page doc-view-current-page)) | |
659 | ||
660 | (defun doc-view-set-slice-using-mouse () | |
661 | "Set the slice of the images that should be displayed. | |
662 | You set the slice by pressing mouse-1 at its top-left corner and | |
663 | dragging it to its bottom-right corner. See also | |
664 | `doc-view-set-slice' and `doc-view-reset-slice'." | |
665 | (interactive) | |
666 | (let (x y w h done) | |
667 | (while (not done) | |
668 | (let ((e (read-event | |
1ca678aa MC |
669 | (concat "Press mouse-1 at the top-left corner and " |
670 | "drag it to the bottom-right corner!")))) | |
671 | (when (eq (car e) 'drag-mouse-1) | |
672 | (setq x (car (posn-object-x-y (event-start e)))) | |
673 | (setq y (cdr (posn-object-x-y (event-start e)))) | |
674 | (setq w (- (car (posn-object-x-y (event-end e))) x)) | |
675 | (setq h (- (cdr (posn-object-x-y (event-end e))) y)) | |
676 | (setq done t)))) | |
94dbe99c TTN |
677 | (doc-view-set-slice x y w h))) |
678 | ||
679 | (defun doc-view-reset-slice () | |
e48a5bf9 | 680 | "Reset the current slice. |
1f75e53d | 681 | After calling this function whole pages will be visible again." |
94dbe99c TTN |
682 | (interactive) |
683 | (setq doc-view-current-slice nil) | |
684 | ;; Redisplay | |
685 | (doc-view-goto-page doc-view-current-page)) | |
686 | ||
687 | ;;;; Display | |
688 | ||
689 | (defun doc-view-insert-image (file &rest args) | |
690 | "Insert the given png FILE. | |
e48a5bf9 | 691 | ARGS is a list of image descriptors." |
c17587fe SM |
692 | (when doc-view-pending-cache-flush |
693 | (clear-image-cache) | |
694 | (setq doc-view-pending-cache-flush nil)) | |
94dbe99c TTN |
695 | (let ((image (apply 'create-image file 'png nil args))) |
696 | (setq doc-view-current-image image) | |
c17587fe SM |
697 | (move-overlay doc-view-current-overlay (point-min) (point-max)) |
698 | (overlay-put doc-view-current-overlay 'display | |
699 | (if doc-view-current-slice | |
700 | (list (cons 'slice doc-view-current-slice) image) | |
701 | image)))) | |
94dbe99c TTN |
702 | |
703 | (defun doc-view-sort (a b) | |
704 | "Return non-nil if A should be sorted before B. | |
705 | Predicate for sorting `doc-view-current-files'." | |
f4c75497 SM |
706 | (or (< (length a) (length b)) |
707 | (and (= (length a) (length b)) | |
708 | (string< a b)))) | |
94dbe99c | 709 | |
214abdd4 SM |
710 | (defun doc-view-display (doc &optional force) |
711 | "Start viewing the document DOC. | |
712 | If FORCE is non-nil, start viewing even if the document does not | |
713 | have the page we want to view." | |
714 | (with-current-buffer (get-file-buffer doc) | |
715 | (setq doc-view-current-files | |
716 | (sort (directory-files (doc-view-current-cache-dir) t | |
717 | "page-[0-9]+\\.png" t) | |
718 | 'doc-view-sort)) | |
719 | (when (or force | |
720 | (>= (length doc-view-current-files) | |
721 | (or doc-view-current-page 1))) | |
722 | (doc-view-goto-page doc-view-current-page)))) | |
94dbe99c TTN |
723 | |
724 | (defun doc-view-buffer-message () | |
c17587fe SM |
725 | ;; Only show this message initially, not when refreshing the buffer (in which |
726 | ;; case it's better to keep displaying the "stale" page while computing | |
727 | ;; the fresh new ones). | |
728 | (unless (overlay-get doc-view-current-overlay 'display) | |
729 | (overlay-put doc-view-current-overlay 'display | |
730 | (concat (propertize "Welcome to DocView!" 'face 'bold) | |
731 | "\n" | |
732 | " | |
1f75e53d | 733 | If you see this buffer it means that the document you want to view is being |
f4c75497 | 734 | converted to PNG and the conversion of the first page hasn't finished yet or |
94dbe99c TTN |
735 | `doc-view-conversion-refresh-interval' is set to nil. |
736 | ||
737 | For now these keys are useful: | |
738 | ||
1ca678aa | 739 | `q' : Bury this buffer. Conversion will go on in background. |
937cb3fb | 740 | `k' : Kill the conversion process and this buffer. |
c17587fe | 741 | `K' : Kill the conversion process.\n")))) |
94dbe99c TTN |
742 | |
743 | (defun doc-view-show-tooltip () | |
744 | (interactive) | |
745 | (tooltip-show doc-view-current-info)) | |
746 | ||
937cb3fb | 747 | ;;;;; Toggle between editing and viewing |
640602f7 RS |
748 | |
749 | (defun doc-view-toggle-display () | |
937cb3fb | 750 | "Toggle between editing a document as text or viewing it." |
640602f7 | 751 | (interactive) |
937cb3fb GM |
752 | (if (eq major-mode 'doc-view-mode) |
753 | ;; Switch to editing mode | |
754 | (progn | |
755 | (doc-view-kill-proc) | |
756 | (setq buffer-read-only nil) | |
c17587fe | 757 | (delete-overlay doc-view-current-overlay) |
937cb3fb GM |
758 | ;; Switch to the previously used major mode or fall back to fundamental |
759 | ;; mode. | |
760 | (if doc-view-previous-major-mode | |
761 | (funcall doc-view-previous-major-mode) | |
762 | (fundamental-mode)) | |
c17587fe | 763 | (doc-view-minor-mode 1)) |
937cb3fb GM |
764 | ;; Switch to doc-view-mode |
765 | (when (and (buffer-modified-p) | |
766 | (y-or-n-p "The buffer has been modified. Save the changes? ")) | |
767 | (save-buffer)) | |
937cb3fb | 768 | (doc-view-mode))) |
640602f7 | 769 | |
94dbe99c TTN |
770 | ;;;; Searching |
771 | ||
772 | (defun doc-view-search-internal (regexp file) | |
773 | "Return a list of FILE's pages that contain text matching REGEXP. | |
1ca678aa MC |
774 | The value is an alist of the form (PAGE CONTEXTS) where PAGE is |
775 | the pagenumber and CONTEXTS are all lines of text containing a match." | |
94dbe99c TTN |
776 | (with-temp-buffer |
777 | (insert-file-contents file) | |
778 | (let ((page 1) | |
1ca678aa MC |
779 | (lastpage 1) |
780 | matches) | |
94dbe99c | 781 | (while (re-search-forward (concat "\\(?:\\([\f]\\)\\|\\(" |
1ca678aa MC |
782 | regexp "\\)\\)") nil t) |
783 | (when (match-string 1) (incf page)) | |
784 | (when (match-string 2) | |
785 | (if (/= page lastpage) | |
c17587fe SM |
786 | (push (cons page |
787 | (list (buffer-substring | |
788 | (line-beginning-position) | |
789 | (line-end-position)))) | |
790 | matches) | |
1ca678aa MC |
791 | (setq matches (cons |
792 | (append | |
793 | (or | |
794 | ;; This page already is a match. | |
795 | (car matches) | |
796 | ;; This is the first match on page. | |
797 | (list page)) | |
798 | (list (buffer-substring | |
799 | (line-beginning-position) | |
800 | (line-end-position)))) | |
801 | (cdr matches)))) | |
802 | (setq lastpage page))) | |
94dbe99c TTN |
803 | (nreverse matches)))) |
804 | ||
805 | (defun doc-view-search-no-of-matches (list) | |
806 | "Extract the number of matches from the search result LIST." | |
807 | (let ((no 0)) | |
808 | (dolist (p list) | |
809 | (setq no (+ no (1- (length p))))) | |
810 | no)) | |
811 | ||
7baca0fa JL |
812 | (defun doc-view-search-backward (new-query) |
813 | "Call `doc-view-search' for backward search. | |
814 | If prefix NEW-QUERY is given, ask for a new regexp." | |
815 | (interactive "P") | |
da99b369 | 816 | (doc-view-search new-query t)) |
7baca0fa JL |
817 | |
818 | (defun doc-view-search (new-query &optional backward) | |
819 | "Jump to the next match or initiate a new search if NEW-QUERY is given. | |
94dbe99c | 820 | If the current document hasn't been transformed to plain text |
7baca0fa JL |
821 | till now do that first. |
822 | If BACKWARD is non-nil, jump to the previous match." | |
823 | (interactive "P") | |
da99b369 | 824 | (if (and (not new-query) |
7baca0fa JL |
825 | doc-view-current-search-matches) |
826 | (if backward | |
827 | (doc-view-search-previous-match 1) | |
828 | (doc-view-search-next-match 1)) | |
829 | ;; New search, so forget the old results. | |
830 | (setq doc-view-current-search-matches nil) | |
831 | (let ((txt (expand-file-name "doc.txt" | |
832 | (doc-view-current-cache-dir)))) | |
833 | (if (file-readable-p txt) | |
834 | (progn | |
835 | (setq doc-view-current-search-matches | |
836 | (doc-view-search-internal | |
837 | (read-from-minibuffer "Regexp: ") | |
838 | txt)) | |
839 | (message "DocView: search yielded %d matches." | |
840 | (doc-view-search-no-of-matches | |
841 | doc-view-current-search-matches))) | |
842 | ;; We must convert to TXT first! | |
843 | (if doc-view-current-converter-process | |
844 | (message "DocView: please wait till conversion finished.") | |
845 | (let ((ext (file-name-extension buffer-file-name))) | |
846 | (cond | |
847 | ((string= ext "pdf") | |
848 | ;; Doc is a PDF, so convert it to TXT | |
849 | (doc-view-pdf->txt buffer-file-name txt)) | |
850 | ((string= ext "ps") | |
851 | ;; Doc is a PS, so convert it to PDF (which will be converted to | |
852 | ;; TXT thereafter). | |
853 | (doc-view-ps->pdf buffer-file-name | |
854 | (expand-file-name "doc.pdf" | |
855 | (doc-view-current-cache-dir)))) | |
856 | ((string= ext "dvi") | |
857 | ;; Doc is a DVI. This means that a doc.pdf already exists in its | |
858 | ;; cache subdirectory. | |
859 | (doc-view-pdf->txt (expand-file-name "doc.pdf" | |
860 | (doc-view-current-cache-dir)) | |
861 | txt)) | |
862 | (t (error "DocView doesn't know what to do"))))))))) | |
94dbe99c TTN |
863 | |
864 | (defun doc-view-search-next-match (arg) | |
865 | "Go to the ARGth next matching page." | |
866 | (interactive "p") | |
937cb3fb GM |
867 | (let* ((next-pages (doc-view-remove-if |
868 | (lambda (i) (<= (car i) doc-view-current-page)) | |
869 | doc-view-current-search-matches)) | |
1ca678aa | 870 | (page (car (nth (1- arg) next-pages)))) |
94dbe99c | 871 | (if page |
1ca678aa | 872 | (doc-view-goto-page page) |
94dbe99c | 873 | (when (and |
1ca678aa MC |
874 | doc-view-current-search-matches |
875 | (y-or-n-p "No more matches after current page. Wrap to first match? ")) | |
876 | (doc-view-goto-page (caar doc-view-current-search-matches)))))) | |
94dbe99c TTN |
877 | |
878 | (defun doc-view-search-previous-match (arg) | |
879 | "Go to the ARGth previous matching page." | |
880 | (interactive "p") | |
937cb3fb GM |
881 | (let* ((prev-pages (doc-view-remove-if |
882 | (lambda (i) (>= (car i) doc-view-current-page)) | |
883 | doc-view-current-search-matches)) | |
1ca678aa | 884 | (page (car (nth (1- arg) (nreverse prev-pages))))) |
94dbe99c | 885 | (if page |
1ca678aa | 886 | (doc-view-goto-page page) |
94dbe99c | 887 | (when (and |
1ca678aa MC |
888 | doc-view-current-search-matches |
889 | (y-or-n-p "No more matches before current page. Wrap to last match? ")) | |
890 | (doc-view-goto-page (caar (last doc-view-current-search-matches))))))) | |
94dbe99c | 891 | |
640602f7 | 892 | ;;;; User interface commands and the mode |
94dbe99c | 893 | |
c17587fe SM |
894 | ;; (put 'doc-view-mode 'mode-class 'special) |
895 | ||
896 | (defun doc-view-initiate-display () | |
897 | ;; Switch to image display if possible | |
d99abf1b | 898 | (if (doc-view-mode-p (intern (file-name-extension buffer-file-name))) |
c17587fe SM |
899 | (progn |
900 | (doc-view-buffer-message) | |
901 | (setq doc-view-current-page (or doc-view-current-page 1)) | |
902 | (if (file-exists-p (doc-view-current-cache-dir)) | |
903 | (progn | |
904 | (message "DocView: using cached files!") | |
214abdd4 | 905 | (doc-view-display buffer-file-name 'force)) |
c17587fe SM |
906 | (doc-view-convert-current-doc)) |
907 | (message | |
908 | "%s" | |
909 | (substitute-command-keys | |
910 | (concat "Type \\[doc-view-toggle-display] to toggle between " | |
911 | "editing or viewing the document.")))) | |
912 | (message | |
913 | "%s" | |
914 | (substitute-command-keys | |
d99abf1b RS |
915 | (concat "No image (png) support available or some conversion utility for " |
916 | (file-name-extension buffer-file-name)" files is missing. " | |
917 | "Type \\[doc-view-toggle-display] to switch to an editing mode."))))) | |
94dbe99c | 918 | |
640602f7 | 919 | ;;;###autoload |
937cb3fb | 920 | (defun doc-view-mode () |
640602f7 RS |
921 | "Major mode in DocView buffers. |
922 | You can use \\<doc-view-mode-map>\\[doc-view-toggle-display] to | |
937cb3fb GM |
923 | toggle between displaying the document or editing it as text." |
924 | (interactive) | |
7baca0fa JL |
925 | (if jka-compr-really-do-compress |
926 | ;; This is a compressed file uncompressed by auto-compression-mode. | |
927 | (when (y-or-n-p (concat "DocView: Cannot convert compressed file. " | |
928 | "Save it uncompressed first? ")) | |
929 | (let ((file (read-file-name | |
930 | "File: " | |
931 | (file-name-directory buffer-file-name)))) | |
932 | (write-region (point-min) (point-max) file) | |
933 | (kill-buffer nil) | |
934 | (find-file file) | |
935 | (doc-view-mode))) | |
936 | (let* ((prev-major-mode (if (eq major-mode 'doc-view-mode) | |
937 | doc-view-previous-major-mode | |
938 | major-mode))) | |
939 | (kill-all-local-variables) | |
940 | (set (make-local-variable 'doc-view-previous-major-mode) prev-major-mode)) | |
941 | (make-local-variable 'doc-view-current-files) | |
942 | (make-local-variable 'doc-view-current-image) | |
943 | (make-local-variable 'doc-view-current-page) | |
944 | (make-local-variable 'doc-view-current-converter-process) | |
945 | (make-local-variable 'doc-view-current-timer) | |
946 | (make-local-variable 'doc-view-current-slice) | |
947 | (make-local-variable 'doc-view-current-cache-dir) | |
948 | (make-local-variable 'doc-view-current-info) | |
949 | (make-local-variable 'doc-view-current-search-matches) | |
950 | (set (make-local-variable 'doc-view-current-overlay) | |
951 | (make-overlay (point-min) (point-max) nil t)) | |
952 | (add-hook 'change-major-mode-hook | |
953 | (lambda () (delete-overlay doc-view-current-overlay)) | |
954 | nil t) | |
955 | (set (make-local-variable 'mode-line-position) | |
956 | '(" P" (:eval (number-to-string doc-view-current-page)) | |
957 | "/" (:eval (number-to-string (length doc-view-current-files))))) | |
958 | (set (make-local-variable 'cursor-type) nil) | |
959 | (use-local-map doc-view-mode-map) | |
960 | (set (make-local-variable 'after-revert-hook) 'doc-view-reconvert-doc) | |
961 | (setq mode-name "DocView" | |
962 | buffer-read-only t | |
963 | major-mode 'doc-view-mode) | |
964 | (doc-view-initiate-display) | |
965 | (run-mode-hooks 'doc-view-mode-hook))) | |
937cb3fb GM |
966 | |
967 | ;;;###autoload | |
968 | (define-minor-mode doc-view-minor-mode | |
969 | "Toggle Doc view minor mode. | |
970 | With arg, turn Doc view minor mode on if arg is positive, off otherwise. | |
971 | See the command `doc-view-mode' for more information on this mode." | |
972 | nil " DocView" doc-view-minor-mode-map | |
973 | :group 'doc-view | |
974 | (when doc-view-minor-mode | |
975 | (add-hook 'change-major-mode-hook (lambda () (doc-view-minor-mode -1)) nil t) | |
976 | (message | |
977 | "%s" | |
978 | (substitute-command-keys | |
979 | "Type \\[doc-view-toggle-display] to toggle between editing or viewing the document.")))) | |
94dbe99c TTN |
980 | |
981 | (defun doc-view-clear-cache () | |
982 | "Delete the whole cache (`doc-view-cache-directory')." | |
983 | (interactive) | |
984 | (dired-delete-file doc-view-cache-directory 'always) | |
985 | (make-directory doc-view-cache-directory)) | |
986 | ||
987 | (defun doc-view-dired-cache () | |
988 | "Open `dired' in `doc-view-cache-directory'." | |
989 | (interactive) | |
990 | (dired doc-view-cache-directory)) | |
991 | ||
992 | (provide 'doc-view) | |
993 | ||
994 | ;; Local Variables: | |
995 | ;; mode: outline-minor | |
996 | ;; End: | |
997 | ||
481249ca | 998 | ;; arch-tag: 5d6e5c5e-095f-489e-b4e4-1ca90a7d79be |
94dbe99c | 999 | ;;; doc-view.el ends here |