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b38b1ec0 SM |
1 | ;;; doc-view.el --- View PDF/PostScript/DVI files in Emacs -*- lexical-binding: t -*- |
2 | ||
ab422c4d | 3 | ;; Copyright (C) 2007-2013 Free Software Foundation, Inc. |
94dbe99c | 4 | ;; |
db8a5a18 TH |
5 | ;; Author: Tassilo Horn <tsdh@gnu.org> |
6 | ;; Maintainer: Tassilo Horn <tsdh@gnu.org> | |
94dbe99c | 7 | ;; Keywords: files, pdf, ps, dvi |
94dbe99c TTN |
8 | |
9 | ;; This file is part of GNU Emacs. | |
10 | ||
eb3fa2cf | 11 | ;; GNU Emacs is free software: you can redistribute it and/or modify |
94dbe99c | 12 | ;; it under the terms of the GNU General Public License as published by |
eb3fa2cf GM |
13 | ;; the Free Software Foundation, either version 3 of the License, or |
14 | ;; (at your option) any later version. | |
94dbe99c TTN |
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 | |
eb3fa2cf | 22 | ;; along with GNU Emacs. If not, see <http://www.gnu.org/licenses/>. |
94dbe99c TTN |
23 | |
24 | ;;; Requirements: | |
25 | ||
4b378e75 | 26 | ;; doc-view.el requires GNU Emacs 22.1 or newer. You also need Ghostscript, |
1ecc9da7 TH |
27 | ;; `dvipdf' (comes with Ghostscript) or `dvipdfm' (comes with teTeX or TeXLive) |
28 | ;; and `pdftotext', which comes with xpdf (http://www.foolabs.com/xpdf/) or | |
29 | ;; poppler (http://poppler.freedesktop.org/). | |
94dbe99c TTN |
30 | |
31 | ;;; Commentary: | |
32 | ||
33 | ;; DocView is a document viewer for Emacs. It converts PDF, PS and DVI files | |
34 | ;; to a set of PNG files, one PNG for each page, and displays the PNG images | |
35 | ;; inside an Emacs buffer. This buffer uses `doc-view-mode' which provides | |
36 | ;; convenient key bindings for browsing the document. | |
37 | ;; | |
640602f7 | 38 | ;; To use it simply open a document file with |
94dbe99c | 39 | ;; |
640602f7 | 40 | ;; C-x C-f ~/path/to/document RET |
94dbe99c | 41 | ;; |
640602f7 RS |
42 | ;; and the document will be converted and displayed, if your emacs supports png |
43 | ;; images. With `C-c C-c' you can toggle between the rendered images | |
1f75e53d | 44 | ;; representation and the source text representation of the document. |
94dbe99c TTN |
45 | ;; |
46 | ;; Since conversion may take some time all the PNG images are cached in a | |
47 | ;; subdirectory of `doc-view-cache-directory' and reused when you want to view | |
640602f7 RS |
48 | ;; that file again. To reconvert a document hit `g' (`doc-view-reconvert-doc') |
49 | ;; when displaying the document. To delete all cached files use | |
94dbe99c TTN |
50 | ;; `doc-view-clear-cache'. To open the cache with dired, so that you can tidy |
51 | ;; it out use `doc-view-dired-cache'. | |
52 | ;; | |
53 | ;; When conversion in underway the first page will be displayed as soon as it | |
54 | ;; is available and the available pages are refreshed every | |
55 | ;; `doc-view-conversion-refresh-interval' seconds. If that variable is nil the | |
56 | ;; pages won't be displayed before conversion of the document finished | |
57 | ;; completely. | |
58 | ;; | |
db8a5a18 TH |
59 | ;; DocView lets you select a slice of the displayed pages. This slice |
60 | ;; will be remembered and applied to all pages of the current | |
61 | ;; document. This enables you to cut away the margins of a document | |
62 | ;; to save some space. To select a slice you can use | |
63 | ;; `doc-view-set-slice' (bound to `s s') which will query you for the | |
64 | ;; coordinates of the slice's top-left corner and its width and | |
65 | ;; height. A much more convenient way to do the same is offered by | |
66 | ;; the command `doc-view-set-slice-using-mouse' (bound to `s m'). | |
67 | ;; After invocation you only have to press mouse-1 at the top-left | |
68 | ;; corner and drag it to the bottom-right corner of the desired slice. | |
69 | ;; Even more accurate and convenient is to use | |
70 | ;; `doc-view-set-slice-from-bounding-box' (bound to `s b') which uses | |
71 | ;; the BoundingBox information of the current page to set an optimal | |
72 | ;; slice. To reset the slice use `doc-view-reset-slice' (bound to `s | |
73 | ;; r'). | |
94dbe99c | 74 | ;; |
94dbe99c TTN |
75 | ;; You can also search within the document. The command `doc-view-search' |
76 | ;; (bound to `C-s') queries for a search regexp and initializes a list of all | |
77 | ;; matching pages and messages how many match-pages were found. After that you | |
7baca0fa JL |
78 | ;; can jump to the next page containing a match with an additional `C-s'. With |
79 | ;; `C-r' you can do the same, but backwards. To search for a new regexp give a | |
80 | ;; prefix arg to one of the search functions, e.g. by typing `C-u C-s'. The | |
81 | ;; searching works by using a plain text representation of the document. If | |
a8ce3d17 | 82 | ;; that doesn't already exist the first invocation of `doc-view-search' (or |
7baca0fa JL |
83 | ;; `doc-view-search-backward') starts the conversion. When that finishes and |
84 | ;; you're still viewing the document (i.e. you didn't switch to another buffer) | |
85 | ;; you're queried for the regexp then. | |
640602f7 RS |
86 | ;; |
87 | ;; Dired users can simply hit `v' on a document file. If it's a PS, PDF or DVI | |
88 | ;; it will be opened using `doc-view-mode'. | |
89 | ;; | |
94dbe99c TTN |
90 | |
91 | ;;; Configuration: | |
92 | ||
640602f7 RS |
93 | ;; If the images are too small or too big you should set the "-rXXX" option in |
94 | ;; `doc-view-ghostscript-options' to another value. (The bigger your screen, | |
95 | ;; the higher the value.) | |
94dbe99c TTN |
96 | ;; |
97 | ;; This and all other options can be set with the customization interface. | |
98 | ;; Simply do | |
99 | ;; | |
100 | ;; M-x customize-group RET doc-view RET | |
101 | ;; | |
102 | ;; and modify them to your needs. | |
103 | ||
34065e5e | 104 | ;;; Todo: |
94dbe99c | 105 | |
56741510 SM |
106 | ;; - add print command. |
107 | ;; - share more code with image-mode. | |
f4c75497 | 108 | ;; - better menu. |
f4c75497 | 109 | ;; - Bind slicing to a drag event. |
cec1df02 | 110 | ;; - zoom the region around the cursor (like xdvi). |
c17587fe SM |
111 | ;; - get rid of the silly arrow in the fringe. |
112 | ;; - improve anti-aliasing (pdf-utils gets it better). | |
f4c75497 | 113 | |
34065e5e JL |
114 | ;;;; About isearch support |
115 | ||
116 | ;; I tried implementing isearch by setting | |
117 | ;; `isearch-search-fun-function' buffer-locally, but that didn't | |
118 | ;; work too good. The function doing the real search was called | |
119 | ;; endlessly somehow. But even if we'd get that working no real | |
120 | ;; isearch feeling comes up due to the missing match highlighting. | |
121 | ;; Currently I display all lines containing a match in a tooltip and | |
122 | ;; each C-s or C-r jumps directly to the next/previous page with a | |
123 | ;; match. With isearch we could only display the current match. So | |
124 | ;; we had to decide if another C-s jumps to the next page with a | |
125 | ;; match (thus only the first match in a page will be displayed in a | |
126 | ;; tooltip) or to the next match, which would do nothing visible | |
127 | ;; (except the tooltip) if the next match is on the same page. | |
128 | ||
129 | ;; And it's much slower than the current search facility, because | |
ee7683eb | 130 | ;; isearch really searches for each step forward or backward whereas |
34065e5e JL |
131 | ;; the current approach searches once and then it knows to which |
132 | ;; pages to jump. | |
133 | ||
134 | ;; Anyway, if someone with better isearch knowledge wants to give it a try, | |
135 | ;; feel free to do it. --Tassilo | |
136 | ||
137 | ;;; Code: | |
138 | ||
f58e0fd5 | 139 | (eval-when-compile (require 'cl-lib)) |
94dbe99c | 140 | (require 'dired) |
414dd971 | 141 | (require 'image-mode) |
7baca0fa | 142 | (require 'jka-compr) |
94dbe99c TTN |
143 | |
144 | ;;;; Customization Options | |
145 | ||
146 | (defgroup doc-view nil | |
2b541f9a | 147 | "In-buffer viewer for PDF, PostScript, DVI, and DJVU files." |
94dbe99c TTN |
148 | :link '(function-link doc-view) |
149 | :version "22.2" | |
150 | :group 'applications | |
ff90f4b0 | 151 | :group 'data |
94dbe99c TTN |
152 | :group 'multimedia |
153 | :prefix "doc-view-") | |
154 | ||
d0af9f77 | 155 | (defcustom doc-view-ghostscript-program "gs" |
94dbe99c | 156 | "Program to convert PS and PDF files to PNG." |
c9a9a5e3 | 157 | :type 'file |
94dbe99c TTN |
158 | :group 'doc-view) |
159 | ||
bbc7ff25 SM |
160 | (defcustom doc-view-pdfdraw-program |
161 | (cond | |
162 | ((executable-find "pdfdraw") "pdfdraw") | |
163 | (t "mudraw")) | |
164 | "Name of MuPDF's program to convert PDF files to PNG." | |
85f17e35 EP |
165 | :type 'file |
166 | :version "24.4") | |
167 | ||
168 | (defcustom doc-view-pdf->png-converter-function | |
bbc7ff25 SM |
169 | (if (executable-find doc-view-pdfdraw-program) |
170 | #'doc-view-pdf->png-converter-mupdf | |
171 | #'doc-view-pdf->png-converter-ghostscript) | |
85f17e35 EP |
172 | "Function to call to convert a PDF file into a PNG file." |
173 | :type '(radio | |
174 | (function-item doc-view-pdf->png-converter-ghostscript | |
175 | :doc "Use ghostscript") | |
176 | (function-item doc-view-pdf->png-converter-mupdf | |
177 | :doc "Use mupdf") | |
178 | function) | |
179 | :version "24.4") | |
180 | ||
94dbe99c | 181 | (defcustom doc-view-ghostscript-options |
6a658a30 | 182 | '("-dSAFER" ;; Avoid security problems when rendering files from untrusted |
94d11cb5 | 183 | ;; sources. |
6a658a30 | 184 | "-dNOPAUSE" "-sDEVICE=png16m" "-dTextAlphaBits=4" |
05477667 | 185 | "-dBATCH" "-dGraphicsAlphaBits=4" "-dQUIET") |
4b378e75 | 186 | "A list of options to give to ghostscript." |
c9a9a5e3 | 187 | :type '(repeat string) |
94dbe99c TTN |
188 | :group 'doc-view) |
189 | ||
05477667 SM |
190 | (defcustom doc-view-resolution 100 |
191 | "Dots per inch resolution used to render the documents. | |
192 | Higher values result in larger images." | |
9efa445f DN |
193 | :type 'number |
194 | :group 'doc-view) | |
05477667 | 195 | |
96dd18b1 SM |
196 | (defcustom doc-view-scale-internally t |
197 | "Whether we should try to rescale images ourselves. | |
198 | If nil, the document is re-rendered every time the scaling factor is modified. | |
199 | This only has an effect if the image libraries linked with Emacs support | |
200 | scaling." | |
201 | :type 'boolean) | |
202 | ||
875c044a TH |
203 | (defcustom doc-view-image-width 850 |
204 | "Default image width. | |
96dd18b1 SM |
205 | Has only an effect if `doc-view-scale-internally' is non-nil and support for |
206 | scaling is compiled into emacs." | |
2bed3f04 | 207 | :version "24.1" |
875c044a TH |
208 | :type 'number |
209 | :group 'doc-view) | |
210 | ||
d0af9f77 | 211 | (defcustom doc-view-dvipdfm-program "dvipdfm" |
94dbe99c TTN |
212 | "Program to convert DVI files to PDF. |
213 | ||
214 | DVI file will be converted to PDF before the resulting PDF is | |
53d4c024 TH |
215 | converted to PNG. |
216 | ||
217 | If this and `doc-view-dvipdf-program' are set, | |
218 | `doc-view-dvipdf-program' will be preferred." | |
219 | :type 'file | |
220 | :group 'doc-view) | |
221 | ||
d0af9f77 | 222 | (defcustom doc-view-dvipdf-program "dvipdf" |
53d4c024 TH |
223 | "Program to convert DVI files to PDF. |
224 | ||
225 | DVI file will be converted to PDF before the resulting PDF is | |
226 | converted to PNG. | |
227 | ||
228 | If this and `doc-view-dvipdfm-program' are set, | |
229 | `doc-view-dvipdf-program' will be preferred." | |
c9a9a5e3 | 230 | :type 'file |
94dbe99c TTN |
231 | :group 'doc-view) |
232 | ||
f63f9398 TH |
233 | (define-obsolete-variable-alias 'doc-view-unoconv-program |
234 | 'doc-view-odf->pdf-converter-program | |
235 | "24.4") | |
236 | ||
237 | (defcustom doc-view-odf->pdf-converter-program | |
238 | (cond | |
239 | ((executable-find "soffice") "soffice") | |
240 | ((executable-find "unoconv") "unoconv") | |
241 | (t "soffice")) | |
95e16d17 TH |
242 | "Program to convert any file type readable by OpenOffice.org to PDF. |
243 | ||
244 | Needed for viewing OpenOffice.org (and MS Office) files." | |
f63f9398 | 245 | :version "24.4" |
95e16d17 TH |
246 | :type 'file |
247 | :group 'doc-view) | |
248 | ||
f63f9398 TH |
249 | (defcustom doc-view-odf->pdf-converter-function |
250 | (cond | |
251 | ((string-match "unoconv\\'" doc-view-odf->pdf-converter-program) | |
252 | #'doc-view-odf->pdf-converter-unoconv) | |
253 | ((string-match "soffice\\'" doc-view-odf->pdf-converter-program) | |
254 | #'doc-view-odf->pdf-converter-soffice)) | |
255 | "Function to call to convert a ODF file into a PDF file." | |
256 | :type '(radio | |
257 | (function-item doc-view-odf->pdf-converter-unoconv | |
258 | :doc "Use unoconv") | |
259 | (function-item doc-view-odf->pdf-converter-soffice | |
260 | :doc "Use LibreOffice") | |
261 | function) | |
262 | :version "24.4") | |
263 | ||
d0af9f77 | 264 | (defcustom doc-view-ps2pdf-program "ps2pdf" |
94dbe99c TTN |
265 | "Program to convert PS files to PDF. |
266 | ||
267 | PS files will be converted to PDF before searching is possible." | |
c9a9a5e3 | 268 | :type 'file |
94dbe99c TTN |
269 | :group 'doc-view) |
270 | ||
d0af9f77 | 271 | (defcustom doc-view-pdftotext-program "pdftotext" |
94dbe99c TTN |
272 | "Program to convert PDF files to plain text. |
273 | ||
274 | Needed for searching." | |
c9a9a5e3 | 275 | :type 'file |
94dbe99c TTN |
276 | :group 'doc-view) |
277 | ||
c17587fe | 278 | (defcustom doc-view-cache-directory |
8aafd651 | 279 | (expand-file-name (format "docview%d" (user-uid)) |
bce6be12 | 280 | temporary-file-directory) |
94dbe99c | 281 | "The base directory, where the PNG images will be saved." |
c9a9a5e3 | 282 | :type 'directory |
94dbe99c TTN |
283 | :group 'doc-view) |
284 | ||
56741510 SM |
285 | (defvar doc-view-conversion-buffer " *doc-view conversion output*" |
286 | "The buffer where messages from the converter programs go to.") | |
94dbe99c | 287 | |
56741510 | 288 | (defcustom doc-view-conversion-refresh-interval 1 |
1f75e53d GM |
289 | "Interval in seconds between refreshes of the DocView buffer while converting. |
290 | After such a refresh newly converted pages will be available for | |
94dbe99c TTN |
291 | viewing. If set to nil there won't be any refreshes and the |
292 | pages won't be displayed before conversion of the whole document | |
293 | has finished." | |
c9a9a5e3 | 294 | :type 'integer |
94dbe99c TTN |
295 | :group 'doc-view) |
296 | ||
0a745733 | 297 | (defcustom doc-view-continuous nil |
aefcadb6 JL |
298 | "In Continuous mode reaching the page edge advances to next/previous page. |
299 | When non-nil, scrolling a line upward at the bottom edge of the page | |
300 | moves to the next page, and scrolling a line downward at the top edge | |
301 | of the page moves to the previous page." | |
302 | :type 'boolean | |
303 | :group 'doc-view | |
304 | :version "23.2") | |
305 | ||
94dbe99c TTN |
306 | ;;;; Internal Variables |
307 | ||
416f1802 | 308 | (defvar-local doc-view--current-converter-processes nil |
f440830d | 309 | "Only used internally.") |
f440830d | 310 | |
de171465 | 311 | (defun doc-view-new-window-function (winprops) |
83600dc8 SM |
312 | ;; (message "New window %s for buf %s" (car winprops) (current-buffer)) |
313 | (cl-assert (or (eq t (car winprops)) | |
314 | (eq (window-buffer (car winprops)) (current-buffer)))) | |
de171465 SM |
315 | (let ((ol (image-mode-window-get 'overlay winprops))) |
316 | (if ol | |
0bca393f | 317 | (progn |
83600dc8 SM |
318 | (setq ol (copy-overlay ol)) |
319 | ;; `ol' might actually be dead. | |
320 | (move-overlay ol (point-min) (point-max))) | |
de171465 SM |
321 | (setq ol (make-overlay (point-min) (point-max) nil t)) |
322 | (overlay-put ol 'doc-view t)) | |
323 | (overlay-put ol 'window (car winprops)) | |
83600dc8 SM |
324 | (unless (windowp (car winprops)) |
325 | ;; It's a pseudo entry. Let's make sure it's not displayed (the | |
326 | ;; `window' property is only effective if its value is a window). | |
327 | (cl-assert (eq t (car winprops))) | |
328 | (delete-overlay ol)) | |
f35ffe5e | 329 | (image-mode-window-put 'overlay ol winprops) |
50105835 SM |
330 | (when (and (windowp (car winprops)) |
331 | (stringp (overlay-get ol 'display)) | |
416f1802 | 332 | (null doc-view--current-converter-processes)) |
50105835 SM |
333 | ;; We're not displaying an image yet, so let's do so. This happens when |
334 | ;; the buffer is displayed for the first time. | |
335 | ;; Don't do it if there's a conversion is running, since in that case, it | |
336 | ;; will be done later. | |
337 | (with-selected-window (car winprops) | |
338 | (doc-view-goto-page 1))))) | |
94dbe99c | 339 | |
416f1802 | 340 | (defvar-local doc-view--current-files nil |
94dbe99c TTN |
341 | "Only used internally.") |
342 | ||
416f1802 | 343 | (defvar-local doc-view--current-timer nil |
94dbe99c TTN |
344 | "Only used internally.") |
345 | ||
416f1802 | 346 | (defvar-local doc-view--current-cache-dir nil |
94dbe99c TTN |
347 | "Only used internally.") |
348 | ||
416f1802 | 349 | (defvar-local doc-view--current-search-matches nil |
94dbe99c TTN |
350 | "Only used internally.") |
351 | ||
416f1802 | 352 | (defvar doc-view--pending-cache-flush nil |
d99abf1b | 353 | "Only used internally.") |
94dbe99c | 354 | |
416f1802 | 355 | (defvar doc-view--previous-major-mode nil |
640602f7 RS |
356 | "Only used internally.") |
357 | ||
416f1802 | 358 | (defvar doc-view--buffer-file-name nil |
39a402e3 TH |
359 | "Only used internally. |
360 | The file name used for conversion. Normally it's the same as | |
361 | `buffer-file-name', but for remote files, compressed files and | |
362 | files inside an archive it is a temporary copy of | |
363 | the (uncompressed, extracted) file residing in | |
364 | `doc-view-cache-directory'.") | |
365 | ||
eb79098b SM |
366 | (defvar doc-view-doc-type nil |
367 | "The type of document in the current buffer. | |
368 | Can be `dvi', `pdf', or `ps'.") | |
369 | ||
2b541f9a EP |
370 | (defvar doc-view-single-page-converter-function nil |
371 | "Function to call to convert a single page of the document to a bitmap file. | |
372 | May operate on the source document or on some intermediate (typically PDF) | |
373 | conversion of it.") | |
374 | ||
bbc7ff25 | 375 | (defvar-local doc-view--image-type nil |
2b541f9a EP |
376 | "The type of image in the current buffer. |
377 | Can be `png' or `tiff'.") | |
378 | ||
bbc7ff25 SM |
379 | (defvar-local doc-view--image-file-pattern nil |
380 | "The `format' pattern of image file names. | |
381 | Typically \"page-%s.png\".") | |
2b541f9a | 382 | |
640602f7 | 383 | ;;;; DocView Keymaps |
94dbe99c TTN |
384 | |
385 | (defvar doc-view-mode-map | |
386 | (let ((map (make-sparse-keymap))) | |
d2d7e96c | 387 | (set-keymap-parent map image-mode-map) |
94dbe99c TTN |
388 | ;; Navigation in the document |
389 | (define-key map (kbd "n") 'doc-view-next-page) | |
390 | (define-key map (kbd "p") 'doc-view-previous-page) | |
eb8d0216 SM |
391 | (define-key map (kbd "<next>") 'forward-page) |
392 | (define-key map (kbd "<prior>") 'backward-page) | |
393 | (define-key map [remap forward-page] 'doc-view-next-page) | |
394 | (define-key map [remap backward-page] 'doc-view-previous-page) | |
94dbe99c | 395 | (define-key map (kbd "SPC") 'doc-view-scroll-up-or-next-page) |
9cec74cf | 396 | (define-key map (kbd "S-SPC") 'doc-view-scroll-down-or-previous-page) |
94dbe99c | 397 | (define-key map (kbd "DEL") 'doc-view-scroll-down-or-previous-page) |
aefcadb6 JL |
398 | (define-key map (kbd "C-n") 'doc-view-next-line-or-next-page) |
399 | (define-key map (kbd "<down>") 'doc-view-next-line-or-next-page) | |
400 | (define-key map (kbd "C-p") 'doc-view-previous-line-or-previous-page) | |
401 | (define-key map (kbd "<up>") 'doc-view-previous-line-or-previous-page) | |
94dbe99c TTN |
402 | (define-key map (kbd "M-<") 'doc-view-first-page) |
403 | (define-key map (kbd "M->") 'doc-view-last-page) | |
7656fe61 | 404 | (define-key map [remap goto-line] 'doc-view-goto-page) |
4376876e | 405 | (define-key map (kbd "RET") 'image-next-line) |
05477667 SM |
406 | ;; Zoom in/out. |
407 | (define-key map "+" 'doc-view-enlarge) | |
408 | (define-key map "-" 'doc-view-shrink) | |
d7b89879 TH |
409 | ;; Fit the image to the window |
410 | (define-key map "W" 'doc-view-fit-width-to-window) | |
411 | (define-key map "H" 'doc-view-fit-height-to-window) | |
412 | (define-key map "P" 'doc-view-fit-page-to-window) | |
d2d7e96c | 413 | ;; Killing the buffer (and the process) |
94dbe99c | 414 | (define-key map (kbd "k") 'doc-view-kill-proc-and-buffer) |
937cb3fb | 415 | (define-key map (kbd "K") 'doc-view-kill-proc) |
94dbe99c TTN |
416 | ;; Slicing the image |
417 | (define-key map (kbd "s s") 'doc-view-set-slice) | |
418 | (define-key map (kbd "s m") 'doc-view-set-slice-using-mouse) | |
db8a5a18 | 419 | (define-key map (kbd "s b") 'doc-view-set-slice-from-bounding-box) |
94dbe99c TTN |
420 | (define-key map (kbd "s r") 'doc-view-reset-slice) |
421 | ;; Searching | |
422 | (define-key map (kbd "C-s") 'doc-view-search) | |
423 | (define-key map (kbd "<find>") 'doc-view-search) | |
7baca0fa | 424 | (define-key map (kbd "C-r") 'doc-view-search-backward) |
94dbe99c TTN |
425 | ;; Show the tooltip |
426 | (define-key map (kbd "C-t") 'doc-view-show-tooltip) | |
640602f7 RS |
427 | ;; Toggle between text and image display or editing |
428 | (define-key map (kbd "C-c C-c") 'doc-view-toggle-display) | |
515357c2 TH |
429 | ;; Open a new buffer with doc's text contents |
430 | (define-key map (kbd "C-c C-t") 'doc-view-open-text) | |
0bca393f SM |
431 | ;; Reconvert the current document. Don't just use revert-buffer |
432 | ;; because that resets the scale factor, the page number, ... | |
433 | (define-key map (kbd "g") 'doc-view-revert-buffer) | |
434 | (define-key map (kbd "r") 'doc-view-revert-buffer) | |
94dbe99c | 435 | map) |
640602f7 RS |
436 | "Keymap used by `doc-view-mode' when displaying a doc as a set of images.") |
437 | ||
0bca393f SM |
438 | (defun doc-view-revert-buffer (&optional ignore-auto noconfirm) |
439 | "Like `revert-buffer', but preserves the buffer's current modes." | |
440 | ;; FIXME: this should probably be moved to files.el and used for | |
441 | ;; most/all "g" bindings to revert-buffer. | |
442 | (interactive (list (not current-prefix-arg))) | |
443 | (revert-buffer ignore-auto noconfirm 'preserve-modes)) | |
444 | ||
445 | ||
f4c75497 SM |
446 | (easy-menu-define doc-view-menu doc-view-mode-map |
447 | "Menu for Doc View mode." | |
448 | '("DocView" | |
0a745733 JL |
449 | ["Toggle display" doc-view-toggle-display] |
450 | ("Continuous" | |
451 | ["Off" (setq doc-view-continuous nil) | |
452 | :style radio :selected (eq doc-view-continuous nil)] | |
453 | ["On" (setq doc-view-continuous t) | |
454 | :style radio :selected (eq doc-view-continuous t)] | |
455 | "---" | |
456 | ["Save as Default" | |
457 | (customize-save-variable 'doc-view-continuous doc-view-continuous) t] | |
458 | ) | |
459 | "---" | |
f4c75497 | 460 | ["Set Slice" doc-view-set-slice-using-mouse] |
db8a5a18 | 461 | ["Set Slice (BoundingBox)" doc-view-set-slice-from-bounding-box] |
f4c75497 SM |
462 | ["Set Slice (manual)" doc-view-set-slice] |
463 | ["Reset Slice" doc-view-reset-slice] | |
464 | "---" | |
465 | ["Search" doc-view-search] | |
7baca0fa | 466 | ["Search Backwards" doc-view-search-backward] |
f4c75497 SM |
467 | )) |
468 | ||
937cb3fb | 469 | (defvar doc-view-minor-mode-map |
640602f7 RS |
470 | (let ((map (make-sparse-keymap))) |
471 | ;; Toggle between text and image display or editing | |
472 | (define-key map (kbd "C-c C-c") 'doc-view-toggle-display) | |
640602f7 | 473 | map) |
937cb3fb | 474 | "Keymap used by `doc-minor-view-mode'.") |
94dbe99c TTN |
475 | |
476 | ;;;; Navigation Commands | |
477 | ||
160dfe43 SM |
478 | (defmacro doc-view-current-page (&optional win) |
479 | `(image-mode-window-get 'page ,win)) | |
de171465 SM |
480 | (defmacro doc-view-current-info () `(image-mode-window-get 'info)) |
481 | (defmacro doc-view-current-overlay () `(image-mode-window-get 'overlay)) | |
482 | (defmacro doc-view-current-image () `(image-mode-window-get 'image)) | |
483 | (defmacro doc-view-current-slice () `(image-mode-window-get 'slice)) | |
484 | ||
bdd42899 | 485 | (defun doc-view-last-page-number () |
416f1802 | 486 | (length doc-view--current-files)) |
bdd42899 | 487 | |
94dbe99c TTN |
488 | (defun doc-view-goto-page (page) |
489 | "View the page given by PAGE." | |
490 | (interactive "nPage: ") | |
e7a1c32d | 491 | (let ((len (doc-view-last-page-number))) |
94dbe99c | 492 | (if (< page 1) |
1ca678aa | 493 | (setq page 1) |
56741510 SM |
494 | (when (and (> page len) |
495 | ;; As long as the converter is running, we don't know | |
496 | ;; how many pages will be available. | |
416f1802 | 497 | (null doc-view--current-converter-processes)) |
1ca678aa | 498 | (setq page len))) |
de171465 SM |
499 | (setf (doc-view-current-page) page |
500 | (doc-view-current-info) | |
1ca678aa MC |
501 | (concat |
502 | (propertize | |
de171465 | 503 | (format "Page %d of %d." page len) 'face 'bold) |
1ca678aa | 504 | ;; Tell user if converting isn't finished yet |
416f1802 | 505 | (if doc-view--current-converter-processes |
1ca678aa MC |
506 | " (still converting...)\n" |
507 | "\n") | |
508 | ;; Display context infos if this page matches the last search | |
416f1802 SM |
509 | (when (and doc-view--current-search-matches |
510 | (assq page doc-view--current-search-matches)) | |
1ca678aa MC |
511 | (concat (propertize "Search matches:\n" 'face 'bold) |
512 | (let ((contexts "")) | |
de171465 | 513 | (dolist (m (cdr (assq page |
416f1802 | 514 | doc-view--current-search-matches))) |
1ca678aa MC |
515 | (setq contexts (concat contexts " - \"" m "\"\n"))) |
516 | contexts))))) | |
94dbe99c | 517 | ;; Update the buffer |
416f1802 | 518 | ;; We used to find the file name from doc-view--current-files but |
56741510 | 519 | ;; that's not right if the pages are not generated sequentially |
416f1802 | 520 | ;; or if the page isn't in doc-view--current-files yet. |
2b541f9a | 521 | (let ((file (expand-file-name |
bbc7ff25 | 522 | (format doc-view--image-file-pattern page) |
416f1802 | 523 | (doc-view--current-cache-dir)))) |
ec4853ab SM |
524 | (doc-view-insert-image file :pointer 'arrow) |
525 | (when (and (not (file-exists-p file)) | |
416f1802 | 526 | doc-view--current-converter-processes) |
ec4853ab | 527 | ;; The PNG file hasn't been generated yet. |
2b541f9a | 528 | (funcall doc-view-single-page-converter-function |
416f1802 | 529 | doc-view--buffer-file-name file page |
2b541f9a EP |
530 | (let ((win (selected-window))) |
531 | (lambda () | |
532 | (and (eq (current-buffer) (window-buffer win)) | |
533 | ;; If we changed page in the mean | |
534 | ;; time, don't mess things up. | |
535 | (eq (doc-view-current-page win) page) | |
536 | ;; Make sure we don't infloop. | |
537 | (file-readable-p file) | |
538 | (with-selected-window win | |
539 | (doc-view-goto-page page)))))))) | |
de171465 | 540 | (overlay-put (doc-view-current-overlay) |
f35ffe5e | 541 | 'help-echo (doc-view-current-info)))) |
94dbe99c TTN |
542 | |
543 | (defun doc-view-next-page (&optional arg) | |
544 | "Browse ARG pages forward." | |
545 | (interactive "p") | |
de171465 | 546 | (doc-view-goto-page (+ (doc-view-current-page) (or arg 1)))) |
94dbe99c TTN |
547 | |
548 | (defun doc-view-previous-page (&optional arg) | |
549 | "Browse ARG pages backward." | |
550 | (interactive "p") | |
de171465 | 551 | (doc-view-goto-page (- (doc-view-current-page) (or arg 1)))) |
94dbe99c TTN |
552 | |
553 | (defun doc-view-first-page () | |
554 | "View the first page." | |
555 | (interactive) | |
556 | (doc-view-goto-page 1)) | |
557 | ||
558 | (defun doc-view-last-page () | |
559 | "View the last page." | |
560 | (interactive) | |
bdd42899 | 561 | (doc-view-goto-page (doc-view-last-page-number))) |
94dbe99c | 562 | |
7d6b4d3c JL |
563 | (defun doc-view-scroll-up-or-next-page (&optional arg) |
564 | "Scroll page up ARG lines if possible, else goto next page. | |
0a745733 | 565 | When `doc-view-continuous' is non-nil, scrolling upward |
7d6b4d3c JL |
566 | at the bottom edge of the page moves to the next page. |
567 | Otherwise, goto next page only on typing SPC (ARG is nil)." | |
568 | (interactive "P") | |
0a745733 | 569 | (if (or doc-view-continuous (null arg)) |
7d6b4d3c JL |
570 | (let ((hscroll (window-hscroll)) |
571 | (cur-page (doc-view-current-page))) | |
572 | (when (= (window-vscroll) (image-scroll-up arg)) | |
573 | (doc-view-next-page) | |
574 | (when (/= cur-page (doc-view-current-page)) | |
575 | (image-bob) | |
576 | (image-bol 1)) | |
577 | (set-window-hscroll (selected-window) hscroll))) | |
578 | (image-scroll-up arg))) | |
579 | ||
580 | (defun doc-view-scroll-down-or-previous-page (&optional arg) | |
581 | "Scroll page down ARG lines if possible, else goto previous page. | |
0a745733 | 582 | When `doc-view-continuous' is non-nil, scrolling downward |
7d6b4d3c JL |
583 | at the top edge of the page moves to the previous page. |
584 | Otherwise, goto previous page only on typing DEL (ARG is nil)." | |
585 | (interactive "P") | |
0a745733 | 586 | (if (or doc-view-continuous (null arg)) |
7d6b4d3c JL |
587 | (let ((hscroll (window-hscroll)) |
588 | (cur-page (doc-view-current-page))) | |
589 | (when (= (window-vscroll) (image-scroll-down arg)) | |
590 | (doc-view-previous-page) | |
591 | (when (/= cur-page (doc-view-current-page)) | |
592 | (image-eob) | |
593 | (image-bol 1)) | |
594 | (set-window-hscroll (selected-window) hscroll))) | |
595 | (image-scroll-down arg))) | |
596 | ||
597 | (defun doc-view-next-line-or-next-page (&optional arg) | |
598 | "Scroll upward by ARG lines if possible, else goto next page. | |
0a745733 | 599 | When `doc-view-continuous' is non-nil, scrolling a line upward |
7d6b4d3c | 600 | at the bottom edge of the page moves to the next page." |
aefcadb6 | 601 | (interactive "p") |
0a745733 | 602 | (if doc-view-continuous |
aefcadb6 JL |
603 | (let ((hscroll (window-hscroll)) |
604 | (cur-page (doc-view-current-page))) | |
7d6b4d3c | 605 | (when (= (window-vscroll) (image-next-line arg)) |
aefcadb6 JL |
606 | (doc-view-next-page) |
607 | (when (/= cur-page (doc-view-current-page)) | |
608 | (image-bob) | |
609 | (image-bol 1)) | |
610 | (set-window-hscroll (selected-window) hscroll))) | |
611 | (image-next-line 1))) | |
612 | ||
7d6b4d3c JL |
613 | (defun doc-view-previous-line-or-previous-page (&optional arg) |
614 | "Scroll downward by ARG lines if possible, else goto previous page. | |
0a745733 | 615 | When `doc-view-continuous' is non-nil, scrolling a line downward |
aefcadb6 JL |
616 | at the top edge of the page moves to the previous page." |
617 | (interactive "p") | |
0a745733 | 618 | (if doc-view-continuous |
aefcadb6 JL |
619 | (let ((hscroll (window-hscroll)) |
620 | (cur-page (doc-view-current-page))) | |
7d6b4d3c | 621 | (when (= (window-vscroll) (image-previous-line arg)) |
aefcadb6 JL |
622 | (doc-view-previous-page) |
623 | (when (/= cur-page (doc-view-current-page)) | |
624 | (image-eob) | |
625 | (image-bol 1)) | |
626 | (set-window-hscroll (selected-window) hscroll))) | |
7d6b4d3c | 627 | (image-previous-line arg))) |
aefcadb6 | 628 | |
937cb3fb GM |
629 | ;;;; Utility Functions |
630 | ||
640602f7 | 631 | (defun doc-view-kill-proc () |
ec4853ab | 632 | "Kill the current converter process(es)." |
640602f7 | 633 | (interactive) |
416f1802 | 634 | (while (consp doc-view--current-converter-processes) |
83600dc8 SM |
635 | (ignore-errors ;; Some entries might not be processes, and maybe |
636 | ;; some are dead already? | |
416f1802 SM |
637 | (kill-process (pop doc-view--current-converter-processes)))) |
638 | (when doc-view--current-timer | |
639 | (cancel-timer doc-view--current-timer) | |
640 | (setq doc-view--current-timer nil)) | |
640602f7 RS |
641 | (setq mode-line-process nil)) |
642 | ||
94dbe99c TTN |
643 | (defun doc-view-kill-proc-and-buffer () |
644 | "Kill the current converter process and buffer." | |
645 | (interactive) | |
640602f7 | 646 | (doc-view-kill-proc) |
94dbe99c | 647 | (when (eq major-mode 'doc-view-mode) |
94dbe99c TTN |
648 | (kill-buffer (current-buffer)))) |
649 | ||
c17587fe SM |
650 | (defun doc-view-make-safe-dir (dir) |
651 | (condition-case nil | |
652 | (let ((umask (default-file-modes))) | |
c82f64de LMI |
653 | (unwind-protect |
654 | (progn | |
655 | ;; Create temp files with strict access rights. It's easy to | |
656 | ;; loosen them later, whereas it's impossible to close the | |
657 | ;; time-window of loose permissions otherwise. | |
658 | (set-default-file-modes #o0700) | |
659 | (make-directory dir)) | |
660 | ;; Reset the umask. | |
661 | (set-default-file-modes umask))) | |
c17587fe | 662 | (file-already-exists |
c82f64de LMI |
663 | (when (file-symlink-p dir) |
664 | (error "Danger: %s points to a symbolic link" dir)) | |
c17587fe SM |
665 | ;; In case it was created earlier with looser rights. |
666 | ;; We could check the mode info returned by file-attributes, but it's | |
667 | ;; a pain to parse and it may not tell you what we want under | |
668 | ;; non-standard file-systems. So let's just say what we want and let | |
669 | ;; the underlying C code and file-system figure it out. | |
670 | ;; This also ends up checking a bunch of useful conditions: it makes | |
671 | ;; sure we have write-access to the directory and that we own it, thus | |
672 | ;; closing a bunch of security holes. | |
c82f64de LMI |
673 | (condition-case error |
674 | (set-file-modes dir #o0700) | |
675 | (file-error | |
676 | (error | |
677 | (format "Unable to use temporary directory %s: %s" | |
678 | dir (mapconcat 'identity (cdr error) " ")))))))) | |
c17587fe | 679 | |
416f1802 | 680 | (defun doc-view--current-cache-dir () |
937cb3fb GM |
681 | "Return the directory where the png files of the current doc should be saved. |
682 | It's a subdirectory of `doc-view-cache-directory'." | |
416f1802 SM |
683 | (if doc-view--current-cache-dir |
684 | doc-view--current-cache-dir | |
c17587fe SM |
685 | ;; Try and make sure doc-view-cache-directory exists and is safe. |
686 | (doc-view-make-safe-dir doc-view-cache-directory) | |
687 | ;; Now compute the subdirectory to use. | |
416f1802 | 688 | (setq doc-view--current-cache-dir |
937cb3fb | 689 | (file-name-as-directory |
c17587fe | 690 | (expand-file-name |
4fa60c54 | 691 | (concat (subst-char-in-string ?% ?_ ;; bug#13679 |
416f1802 | 692 | (file-name-nondirectory doc-view--buffer-file-name)) |
39a402e3 | 693 | "-" |
416f1802 | 694 | (let ((file doc-view--buffer-file-name)) |
39a402e3 | 695 | (with-temp-buffer |
86903c81 | 696 | (set-buffer-multibyte nil) |
39a402e3 TH |
697 | (insert-file-contents-literally file) |
698 | (md5 (current-buffer))))) | |
c17587fe | 699 | doc-view-cache-directory))))) |
937cb3fb GM |
700 | |
701 | (defun doc-view-remove-if (predicate list) | |
702 | "Return LIST with all items removed that satisfy PREDICATE." | |
703 | (let (new-list) | |
8eda563d | 704 | (dolist (item list) |
937cb3fb | 705 | (when (not (funcall predicate item)) |
8eda563d JB |
706 | (setq new-list (cons item new-list)))) |
707 | (nreverse new-list))) | |
937cb3fb | 708 | |
789ab9d4 RS |
709 | ;;;###autoload |
710 | (defun doc-view-mode-p (type) | |
95e16d17 TH |
711 | "Return non-nil if document type TYPE is available for `doc-view'. |
712 | Document types are symbols like `dvi', `ps', `pdf', or `odf' (any | |
713 | OpenDocument format)." | |
789ab9d4 | 714 | (and (display-graphic-p) |
c44d54b3 TH |
715 | (or (image-type-available-p 'imagemagick) |
716 | (image-type-available-p 'png)) | |
789ab9d4 RS |
717 | (cond |
718 | ((eq type 'dvi) | |
719 | (and (doc-view-mode-p 'pdf) | |
53d4c024 TH |
720 | (or (and doc-view-dvipdf-program |
721 | (executable-find doc-view-dvipdf-program)) | |
722 | (and doc-view-dvipdfm-program | |
723 | (executable-find doc-view-dvipdfm-program))))) | |
bbc7ff25 | 724 | ((memq type '(postscript ps eps pdf)) |
85f17e35 | 725 | ;; FIXME: allow mupdf here |
789ab9d4 RS |
726 | (and doc-view-ghostscript-program |
727 | (executable-find doc-view-ghostscript-program))) | |
95e16d17 | 728 | ((eq type 'odf) |
f63f9398 TH |
729 | (and doc-view-odf->pdf-converter-program |
730 | (executable-find doc-view-odf->pdf-converter-program) | |
95e16d17 | 731 | (doc-view-mode-p 'pdf))) |
2b541f9a EP |
732 | ((eq type 'djvu) |
733 | (executable-find "ddjvu")) | |
789ab9d4 RS |
734 | (t ;; unknown image type |
735 | nil)))) | |
736 | ||
94dbe99c TTN |
737 | ;;;; Conversion Functions |
738 | ||
05477667 SM |
739 | (defvar doc-view-shrink-factor 1.125) |
740 | ||
741 | (defun doc-view-enlarge (factor) | |
83600dc8 | 742 | "Enlarge the document by FACTOR." |
05477667 | 743 | (interactive (list doc-view-shrink-factor)) |
96dd18b1 SM |
744 | (if (and doc-view-scale-internally |
745 | (eq (plist-get (cdr (doc-view-current-image)) :type) | |
746 | 'imagemagick)) | |
83600dc8 SM |
747 | ;; ImageMagick supports on-the-fly-rescaling. |
748 | (let ((new (ceiling (* factor doc-view-image-width)))) | |
749 | (unless (equal new doc-view-image-width) | |
bbc7ff25 | 750 | (setq-local doc-view-image-width new) |
83600dc8 SM |
751 | (doc-view-insert-image |
752 | (plist-get (cdr (doc-view-current-image)) :file) | |
753 | :width doc-view-image-width))) | |
754 | (let ((new (ceiling (* factor doc-view-resolution)))) | |
755 | (unless (equal new doc-view-resolution) | |
bbc7ff25 | 756 | (setq-local doc-view-resolution new) |
83600dc8 | 757 | (doc-view-reconvert-doc))))) |
05477667 SM |
758 | |
759 | (defun doc-view-shrink (factor) | |
760 | "Shrink the document." | |
761 | (interactive (list doc-view-shrink-factor)) | |
762 | (doc-view-enlarge (/ 1.0 factor))) | |
763 | ||
d7b89879 TH |
764 | (defun doc-view-fit-width-to-window () |
765 | "Fit the image width to the window width." | |
766 | (interactive) | |
767 | (let ((win-width (- (nth 2 (window-inside-pixel-edges)) | |
768 | (nth 0 (window-inside-pixel-edges)))) | |
769 | (slice (doc-view-current-slice))) | |
770 | (if (not slice) | |
771 | (let ((img-width (car (image-display-size | |
772 | (image-get-display-property) t)))) | |
773 | (doc-view-enlarge (/ (float win-width) (float img-width)))) | |
774 | ||
775 | ;; If slice is set | |
776 | (let* ((slice-width (nth 2 slice)) | |
777 | (scale-factor (/ (float win-width) (float slice-width))) | |
778 | (new-slice (mapcar (lambda (x) (ceiling (* scale-factor x))) slice))) | |
779 | ||
780 | (doc-view-enlarge scale-factor) | |
781 | (setf (doc-view-current-slice) new-slice) | |
782 | (doc-view-goto-page (doc-view-current-page)))))) | |
783 | ||
784 | (defun doc-view-fit-height-to-window () | |
785 | "Fit the image height to the window height." | |
786 | (interactive) | |
787 | (let ((win-height (- (nth 3 (window-inside-pixel-edges)) | |
788 | (nth 1 (window-inside-pixel-edges)))) | |
789 | (slice (doc-view-current-slice))) | |
790 | (if (not slice) | |
791 | (let ((img-height (cdr (image-display-size | |
792 | (image-get-display-property) t)))) | |
793 | ;; When users call 'doc-view-fit-height-to-window', | |
794 | ;; they might want to go to next page by typing SPC | |
795 | ;; ONLY once. So I used '(- win-height 1)' instead of | |
796 | ;; 'win-height' | |
797 | (doc-view-enlarge (/ (float (- win-height 1)) (float img-height)))) | |
798 | ||
799 | ;; If slice is set | |
800 | (let* ((slice-height (nth 3 slice)) | |
801 | (scale-factor (/ (float (- win-height 1)) (float slice-height))) | |
802 | (new-slice (mapcar (lambda (x) (ceiling (* scale-factor x))) slice))) | |
803 | ||
804 | (doc-view-enlarge scale-factor) | |
805 | (setf (doc-view-current-slice) new-slice) | |
806 | (doc-view-goto-page (doc-view-current-page)))))) | |
807 | ||
808 | (defun doc-view-fit-page-to-window () | |
809 | "Fit the image to the window. | |
810 | More specifically, this function enlarges image by: | |
811 | ||
812 | min {(window-width / image-width), (window-height / image-height)} times." | |
813 | (interactive) | |
814 | (let ((win-width (- (nth 2 (window-inside-pixel-edges)) | |
815 | (nth 0 (window-inside-pixel-edges)))) | |
816 | (win-height (- (nth 3 (window-inside-pixel-edges)) | |
817 | (nth 1 (window-inside-pixel-edges)))) | |
818 | (slice (doc-view-current-slice))) | |
819 | (if (not slice) | |
820 | (let ((img-width (car (image-display-size | |
821 | (image-get-display-property) t))) | |
822 | (img-height (cdr (image-display-size | |
823 | (image-get-display-property) t)))) | |
824 | (doc-view-enlarge (min (/ (float win-width) (float img-width)) | |
83600dc8 SM |
825 | (/ (float (- win-height 1)) |
826 | (float img-height))))) | |
d7b89879 TH |
827 | ;; If slice is set |
828 | (let* ((slice-width (nth 2 slice)) | |
829 | (slice-height (nth 3 slice)) | |
830 | (scale-factor (min (/ (float win-width) (float slice-width)) | |
83600dc8 SM |
831 | (/ (float (- win-height 1)) |
832 | (float slice-height)))) | |
d7b89879 TH |
833 | (new-slice (mapcar (lambda (x) (ceiling (* scale-factor x))) slice))) |
834 | (doc-view-enlarge scale-factor) | |
835 | (setf (doc-view-current-slice) new-slice) | |
836 | (doc-view-goto-page (doc-view-current-page)))))) | |
837 | ||
c17587fe | 838 | (defun doc-view-reconvert-doc () |
640602f7 RS |
839 | "Reconvert the current document. |
840 | Should be invoked when the cached images aren't up-to-date." | |
841 | (interactive) | |
f4c75497 SM |
842 | (doc-view-kill-proc) |
843 | ;; Clear the old cached files | |
416f1802 SM |
844 | (when (file-exists-p (doc-view--current-cache-dir)) |
845 | (delete-directory (doc-view--current-cache-dir) 'recursive)) | |
83600dc8 | 846 | (kill-local-variable 'doc-view-last-page-number) |
c17587fe | 847 | (doc-view-initiate-display)) |
94dbe99c | 848 | |
b4cb319f SM |
849 | (defun doc-view-sentinel (proc event) |
850 | "Generic sentinel for doc-view conversion processes." | |
94dbe99c | 851 | (if (not (string-match "finished" event)) |
b4cb319f | 852 | (message "DocView: process %s changed status to %s." |
405ee48d CY |
853 | (process-name proc) |
854 | (if (string-match "\\(.+\\)\n?\\'" event) | |
855 | (match-string 1 event) | |
856 | event)) | |
ec4853ab SM |
857 | (when (buffer-live-p (process-get proc 'buffer)) |
858 | (with-current-buffer (process-get proc 'buffer) | |
416f1802 SM |
859 | (setq doc-view--current-converter-processes |
860 | (delq proc doc-view--current-converter-processes)) | |
ec4853ab | 861 | (setq mode-line-process |
416f1802 SM |
862 | (if doc-view--current-converter-processes |
863 | (format ":%s" (car doc-view--current-converter-processes)))) | |
ec4853ab SM |
864 | (funcall (process-get proc 'callback)))))) |
865 | ||
866 | (defun doc-view-start-process (name program args callback) | |
3c03f2ce TH |
867 | ;; Make sure the process is started in an existing directory, (rather than |
868 | ;; some file-name-handler-managed dir, for example). | |
efb3f01d SM |
869 | (let* ((default-directory (or (unhandled-file-name-directory |
870 | default-directory) | |
3c03f2ce | 871 | (expand-file-name "~/"))) |
ec4853ab SM |
872 | (proc (apply 'start-process name doc-view-conversion-buffer |
873 | program args))) | |
416f1802 | 874 | (push proc doc-view--current-converter-processes) |
ec4853ab SM |
875 | (setq mode-line-process (list (format ":%s" proc))) |
876 | (set-process-sentinel proc 'doc-view-sentinel) | |
877 | (process-put proc 'buffer (current-buffer)) | |
878 | (process-put proc 'callback callback))) | |
b4cb319f SM |
879 | |
880 | (defun doc-view-dvi->pdf (dvi pdf callback) | |
881 | "Convert DVI to PDF asynchronously and call CALLBACK when finished." | |
53d4c024 TH |
882 | ;; Prefer dvipdf over dvipdfm, because the latter has problems if the DVI |
883 | ;; references and includes other PS files. | |
884 | (if (and doc-view-dvipdf-program | |
885 | (executable-find doc-view-dvipdf-program)) | |
886 | (doc-view-start-process "dvi->pdf" doc-view-dvipdf-program | |
94d11cb5 IK |
887 | (list dvi pdf) |
888 | callback) | |
53d4c024 TH |
889 | (doc-view-start-process "dvi->pdf" doc-view-dvipdfm-program |
890 | (list "-o" pdf dvi) | |
891 | callback))) | |
ec4853ab | 892 | |
bbc7ff25 SM |
893 | (defun doc-view-pdf->png-converter-ghostscript (pdf png page callback) |
894 | (doc-view-start-process | |
895 | "pdf/ps->png" doc-view-ghostscript-program | |
896 | `(,@doc-view-ghostscript-options | |
897 | ,(format "-r%d" (round doc-view-resolution)) | |
898 | ,@(if page `(,(format "-dFirstPage=%d" page))) | |
899 | ,@(if page `(,(format "-dLastPage=%d" page))) | |
900 | ,(concat "-sOutputFile=" png) | |
901 | ,pdf) | |
902 | callback)) | |
85f17e35 EP |
903 | |
904 | (defalias 'doc-view-ps->png-converter-ghostscript | |
905 | 'doc-view-pdf->png-converter-ghostscript) | |
906 | ||
bbc7ff25 SM |
907 | (defun doc-view-djvu->tiff-converter-ddjvu (djvu tiff page callback) |
908 | "Convert PAGE of a DJVU file to bitmap(s) asynchronously. | |
909 | Call CALLBACK with no arguments when done. | |
910 | If PAGE is nil, convert the whole document." | |
911 | (doc-view-start-process | |
912 | "djvu->tiff" "ddjvu" | |
913 | `("-format=tiff" | |
914 | ;; ddjvu only accepts the range 1-999. | |
915 | ,(format "-scale=%d" (round doc-view-resolution)) | |
916 | ;; -eachpage was only added after djvulibre-3.5.25.3! | |
917 | ,@(unless page '("-eachpage")) | |
918 | ,@(if page `(,(format "-page=%d" page))) | |
919 | ,djvu | |
920 | ,tiff) | |
921 | callback)) | |
922 | ||
923 | (defun doc-view-pdf->png-converter-mupdf (pdf png page callback) | |
924 | (doc-view-start-process | |
925 | "pdf->png" doc-view-pdfdraw-program | |
926 | `(,(concat "-o" png) | |
927 | ,(format "-r%d" (round doc-view-resolution)) | |
928 | ||
929 | ,@(if page `(,(format "%d" page)))) | |
930 | callback)) | |
85f17e35 | 931 | |
f63f9398 | 932 | (defun doc-view-odf->pdf-converter-unoconv (odf callback) |
95e16d17 TH |
933 | "Convert ODF to PDF asynchronously and call CALLBACK when finished. |
934 | The converted PDF is put into the current cache directory, and it | |
935 | is named like ODF with the extension turned to pdf." | |
f63f9398 | 936 | (doc-view-start-process "odf->pdf" doc-view-odf->pdf-converter-program |
416f1802 | 937 | (list "-f" "pdf" "-o" (doc-view--current-cache-dir) odf) |
95e16d17 | 938 | callback)) |
94dbe99c | 939 | |
f63f9398 TH |
940 | (defun doc-view-odf->pdf-converter-soffice (odf callback) |
941 | "Convert ODF to PDF asynchronously and call CALLBACK when finished. | |
942 | The converted PDF is put into the current cache directory, and it | |
943 | is named like ODF with the extension turned to pdf." | |
957a6f26 TH |
944 | ;; FIXME: soffice doesn't work when there's another running |
945 | ;; LibreOffice instance, in which case it returns success without | |
946 | ;; actually doing anything. See LibreOffice bug | |
947 | ;; https://bugs.freedesktop.org/show_bug.cgi?id=37531. A workaround | |
948 | ;; is to start soffice with a separate UserInstallation directory. | |
949 | (let ((tmp-user-install-dir (make-temp-file "libreoffice-docview" t))) | |
950 | (doc-view-start-process "odf->pdf" doc-view-odf->pdf-converter-program | |
951 | (list | |
952 | (concat "-env:UserInstallation=file://" | |
953 | tmp-user-install-dir) | |
954 | "--headless" "--convert-to" "pdf" | |
416f1802 | 955 | "--outdir" (doc-view--current-cache-dir) odf) |
957a6f26 TH |
956 | (lambda () |
957 | (delete-directory tmp-user-install-dir t) | |
958 | (funcall callback))))) | |
f63f9398 | 959 | |
94dbe99c | 960 | (defun doc-view-pdf/ps->png (pdf-ps png) |
2b541f9a | 961 | ;; FIXME: Fix name and docstring to account for djvu&tiff. |
1f75e53d | 962 | "Convert PDF-PS to PNG asynchronously." |
bbc7ff25 SM |
963 | (funcall |
964 | (pcase doc-view-doc-type | |
965 | (`pdf doc-view-pdf->png-converter-function) | |
966 | (`djvu #'doc-view-djvu->tiff-converter-ddjvu) | |
967 | (_ #'doc-view-ps->png-converter-ghostscript)) | |
968 | pdf-ps png nil | |
94d11cb5 | 969 | (let ((resolution doc-view-resolution)) |
bdd42899 SM |
970 | (lambda () |
971 | ;; Only create the resolution file when it's all done, so it also | |
972 | ;; serves as a witness that the conversion is complete. | |
973 | (write-region (prin1-to-string resolution) nil | |
974 | (expand-file-name "resolution.el" | |
416f1802 | 975 | (doc-view--current-cache-dir)) |
bdd42899 | 976 | nil 'silently) |
416f1802 SM |
977 | (when doc-view--current-timer |
978 | (cancel-timer doc-view--current-timer) | |
979 | (setq doc-view--current-timer nil)) | |
bbc7ff25 SM |
980 | (doc-view-display (current-buffer) 'force)))) |
981 | ||
ec4853ab | 982 | ;; Update the displayed pages as soon as they're done generating. |
94dbe99c | 983 | (when doc-view-conversion-refresh-interval |
416f1802 | 984 | (setq doc-view--current-timer |
ec4853ab SM |
985 | (run-at-time "1 secs" doc-view-conversion-refresh-interval |
986 | 'doc-view-display | |
987 | (current-buffer))))) | |
988 | ||
aa360da1 GM |
989 | (declare-function clear-image-cache "image.c" (&optional filter)) |
990 | ||
72781fef | 991 | (defun doc-view-document->bitmap (pdf png pages) |
bbc7ff25 | 992 | "Convert a document file to bitmap images asynchronously. |
ec4853ab SM |
993 | Start by converting PAGES, and then the rest." |
994 | (if (null pages) | |
995 | (doc-view-pdf/ps->png pdf png) | |
996 | ;; We could render several `pages' with a single process if they're | |
997 | ;; (almost) consecutive, but since in 99% of the cases, there'll be only | |
998 | ;; a single page anyway, and of the remaining 1%, few cases will have | |
999 | ;; consecutive pages, it's not worth the trouble. | |
94d11cb5 | 1000 | (let ((rest (cdr pages))) |
72781fef | 1001 | (funcall doc-view-single-page-converter-function |
2b541f9a | 1002 | pdf (format png (car pages)) (car pages) |
ec4853ab SM |
1003 | (lambda () |
1004 | (if rest | |
bbc7ff25 | 1005 | (doc-view-document->bitmap pdf png rest) |
ec4853ab SM |
1006 | ;; Yippie, the important pages are done, update the display. |
1007 | (clear-image-cache) | |
bdd42899 SM |
1008 | ;; For the windows that have a message (like "Welcome to |
1009 | ;; DocView") display property, clearing the image cache is | |
1010 | ;; not sufficient. | |
1011 | (dolist (win (get-buffer-window-list (current-buffer) nil 'visible)) | |
1012 | (with-selected-window win | |
2167b7b2 | 1013 | (when (stringp (overlay-get (doc-view-current-overlay) 'display)) |
2b541f9a | 1014 | (doc-view-goto-page (doc-view-current-page))))) |
ec4853ab SM |
1015 | ;; Convert the rest of the pages. |
1016 | (doc-view-pdf/ps->png pdf png))))))) | |
94dbe99c | 1017 | |
b4cb319f SM |
1018 | (defun doc-view-pdf->txt (pdf txt callback) |
1019 | "Convert PDF to TXT asynchronously and call CALLBACK when finished." | |
d0af9f77 | 1020 | (or (executable-find doc-view-pdftotext-program) |
ca32d854 | 1021 | (error "You need the `pdftotext' program to convert a PDF to text")) |
ec4853ab SM |
1022 | (doc-view-start-process "pdf->txt" doc-view-pdftotext-program |
1023 | (list "-raw" pdf txt) | |
1024 | callback)) | |
515357c2 | 1025 | |
c00ebc98 TH |
1026 | (defun doc-view-current-cache-doc-pdf () |
1027 | "Return the name of the doc.pdf in the current cache dir. | |
1028 | This file exists only if the current document isn't a PDF or PS file already." | |
416f1802 | 1029 | (expand-file-name "doc.pdf" (doc-view--current-cache-dir))) |
c00ebc98 | 1030 | |
b4cb319f SM |
1031 | (defun doc-view-doc->txt (txt callback) |
1032 | "Convert the current document to text and call CALLBACK when done." | |
416f1802 | 1033 | (make-directory (doc-view--current-cache-dir) t) |
f58e0fd5 SM |
1034 | (pcase doc-view-doc-type |
1035 | ||
b4cb319f | 1036 | ;; Doc is a PDF, so convert it to TXT |
416f1802 | 1037 | (doc-view-pdf->txt doc-view--buffer-file-name txt callback)) |
f58e0fd5 | 1038 | (`ps |
b4cb319f SM |
1039 | ;; Doc is a PS, so convert it to PDF (which will be converted to |
1040 | ;; TXT thereafter). | |
c00ebc98 | 1041 | (let ((pdf (doc-view-current-cache-doc-pdf))) |
416f1802 | 1042 | (doc-view-ps->pdf doc-view--buffer-file-name pdf |
b4cb319f | 1043 | (lambda () (doc-view-pdf->txt pdf txt callback))))) |
f58e0fd5 | 1044 | (`dvi |
b4cb319f SM |
1045 | ;; Doc is a DVI. This means that a doc.pdf already exists in its |
1046 | ;; cache subdirectory. | |
c00ebc98 | 1047 | (doc-view-pdf->txt (doc-view-current-cache-doc-pdf) txt callback)) |
f58e0fd5 | 1048 | (`odf |
b71b7803 TH |
1049 | ;; Doc is some ODF (or MS Office) doc. This means that a doc.pdf |
1050 | ;; already exists in its cache subdirectory. | |
c00ebc98 | 1051 | (doc-view-pdf->txt (doc-view-current-cache-doc-pdf) txt callback)) |
f58e0fd5 | 1052 | (_ (error "DocView doesn't know what to do")))) |
b4cb319f SM |
1053 | |
1054 | (defun doc-view-ps->pdf (ps pdf callback) | |
1055 | "Convert PS to PDF asynchronously and call CALLBACK when finished." | |
d0af9f77 | 1056 | (or (executable-find doc-view-ps2pdf-program) |
ca32d854 | 1057 | (error "You need the `ps2pdf' program to convert PS to PDF")) |
ec4853ab SM |
1058 | (doc-view-start-process "ps->pdf" doc-view-ps2pdf-program |
1059 | (list | |
1060 | ;; Avoid security problems when rendering files from | |
1061 | ;; untrusted sources. | |
1062 | "-dSAFER" | |
1063 | ;; in-file and out-file | |
1064 | ps pdf) | |
1065 | callback)) | |
1066 | ||
1067 | (defun doc-view-active-pages () | |
1068 | (let ((pages ())) | |
1069 | (dolist (win (get-buffer-window-list (current-buffer) nil 'visible)) | |
1070 | (let ((page (image-mode-window-get 'page win))) | |
1071 | (unless (memq page pages) (push page pages)))) | |
1072 | pages)) | |
94dbe99c | 1073 | |
640602f7 | 1074 | (defun doc-view-convert-current-doc () |
416f1802 | 1075 | "Convert `doc-view--buffer-file-name' to a set of png files, one file per page. |
640602f7 | 1076 | Those files are saved in the directory given by the function |
416f1802 | 1077 | `doc-view--current-cache-dir'." |
c17587fe SM |
1078 | ;; Let stale files still display while we recompute the new ones, so only |
1079 | ;; flush the cache when the conversion is over. One of the reasons why it | |
1080 | ;; is important to keep displaying the stale page is so that revert-buffer | |
1081 | ;; preserves the horizontal/vertical scroll settings (which are otherwise | |
416f1802 SM |
1082 | ;; reset during the redisplay). |
1083 | (setq doc-view--pending-cache-flush t) | |
2b541f9a | 1084 | (let ((png-file (expand-file-name |
bbc7ff25 | 1085 | (format doc-view--image-file-pattern "%d") |
416f1802 SM |
1086 | (doc-view--current-cache-dir)))) |
1087 | (make-directory (doc-view--current-cache-dir) t) | |
f58e0fd5 SM |
1088 | (pcase doc-view-doc-type |
1089 | (`dvi | |
eb79098b SM |
1090 | ;; DVI files have to be converted to PDF before Ghostscript can process |
1091 | ;; it. | |
c00ebc98 | 1092 | (let ((pdf (doc-view-current-cache-doc-pdf))) |
416f1802 | 1093 | (doc-view-dvi->pdf doc-view--buffer-file-name pdf |
b4cb319f | 1094 | (lambda () (doc-view-pdf/ps->png pdf png-file))))) |
f58e0fd5 | 1095 | (`odf |
95e16d17 TH |
1096 | ;; ODF files have to be converted to PDF before Ghostscript can |
1097 | ;; process it. | |
c00ebc98 | 1098 | (let ((pdf (doc-view-current-cache-doc-pdf)) |
2b541f9a | 1099 | (opdf (expand-file-name |
416f1802 | 1100 | (concat (file-name-base doc-view--buffer-file-name) |
2b541f9a | 1101 | ".pdf") |
416f1802 | 1102 | doc-view--current-cache-dir)) |
e95a67dc | 1103 | (png-file png-file)) |
2b541f9a | 1104 | ;; The unoconv tool only supports an output directory, but no |
95e16d17 TH |
1105 | ;; file name. It's named like the input file with the |
1106 | ;; extension replaced by pdf. | |
416f1802 | 1107 | (funcall doc-view-odf->pdf-converter-function doc-view--buffer-file-name |
95e16d17 TH |
1108 | (lambda () |
1109 | ;; Rename to doc.pdf | |
1110 | (rename-file opdf pdf) | |
1111 | (doc-view-pdf/ps->png pdf png-file))))) | |
bbc7ff25 | 1112 | ((or `pdf `djvu) |
2b541f9a | 1113 | (let ((pages (doc-view-active-pages))) |
bbc7ff25 | 1114 | ;; Convert doc to bitmap images starting with the active pages. |
416f1802 | 1115 | (doc-view-document->bitmap doc-view--buffer-file-name png-file pages))) |
f58e0fd5 | 1116 | (_ |
eb79098b | 1117 | ;; Convert to PNG images. |
416f1802 | 1118 | (doc-view-pdf/ps->png doc-view--buffer-file-name png-file))))) |
94dbe99c | 1119 | |
94dbe99c TTN |
1120 | ;;;; Slicing |
1121 | ||
aa360da1 GM |
1122 | (declare-function image-size "image.c" (spec &optional pixels frame)) |
1123 | ||
94dbe99c TTN |
1124 | (defun doc-view-set-slice (x y width height) |
1125 | "Set the slice of the images that should be displayed. | |
1126 | You can use this function to tell doc-view not to display the | |
1127 | margins of the document. It prompts for the top-left corner (X | |
1128 | and Y) of the slice to display and its WIDTH and HEIGHT. | |
1129 | ||
db8a5a18 TH |
1130 | See `doc-view-set-slice-using-mouse' and |
1131 | `doc-view-set-slice-from-bounding-box' for more convenient ways | |
1132 | to do that. To reset the slice use `doc-view-reset-slice'." | |
94dbe99c | 1133 | (interactive |
de171465 | 1134 | (let* ((size (image-size (doc-view-current-image) t)) |
1ca678aa MC |
1135 | (a (read-number (format "Top-left X (0..%d): " (car size)))) |
1136 | (b (read-number (format "Top-left Y (0..%d): " (cdr size)))) | |
1137 | (c (read-number (format "Width (0..%d): " (- (car size) a)))) | |
1138 | (d (read-number (format "Height (0..%d): " (- (cdr size) b))))) | |
94dbe99c | 1139 | (list a b c d))) |
de171465 | 1140 | (setf (doc-view-current-slice) (list x y width height)) |
94dbe99c | 1141 | ;; Redisplay |
de171465 | 1142 | (doc-view-goto-page (doc-view-current-page))) |
94dbe99c TTN |
1143 | |
1144 | (defun doc-view-set-slice-using-mouse () | |
1145 | "Set the slice of the images that should be displayed. | |
1146 | You set the slice by pressing mouse-1 at its top-left corner and | |
1147 | dragging it to its bottom-right corner. See also | |
1148 | `doc-view-set-slice' and `doc-view-reset-slice'." | |
1149 | (interactive) | |
1150 | (let (x y w h done) | |
1151 | (while (not done) | |
1152 | (let ((e (read-event | |
1ca678aa MC |
1153 | (concat "Press mouse-1 at the top-left corner and " |
1154 | "drag it to the bottom-right corner!")))) | |
1155 | (when (eq (car e) 'drag-mouse-1) | |
1156 | (setq x (car (posn-object-x-y (event-start e)))) | |
1157 | (setq y (cdr (posn-object-x-y (event-start e)))) | |
1158 | (setq w (- (car (posn-object-x-y (event-end e))) x)) | |
1159 | (setq h (- (cdr (posn-object-x-y (event-end e))) y)) | |
1160 | (setq done t)))) | |
94dbe99c TTN |
1161 | (doc-view-set-slice x y w h))) |
1162 | ||
db8a5a18 TH |
1163 | (defun doc-view-get-bounding-box () |
1164 | "Get the BoundingBox information of the current page." | |
1165 | (let* ((page (doc-view-current-page)) | |
c00ebc98 TH |
1166 | (doc (let ((cache-doc (doc-view-current-cache-doc-pdf))) |
1167 | (if (file-exists-p cache-doc) | |
1168 | cache-doc | |
416f1802 | 1169 | doc-view--buffer-file-name))) |
db8a5a18 TH |
1170 | (o (shell-command-to-string |
1171 | (concat doc-view-ghostscript-program | |
1172 | " -dSAFER -dBATCH -dNOPAUSE -q -sDEVICE=bbox " | |
1173 | (format "-dFirstPage=%s -dLastPage=%s %s" | |
c00ebc98 | 1174 | page page doc))))) |
db8a5a18 TH |
1175 | (save-match-data |
1176 | (when (string-match (concat "%%BoundingBox: " | |
1177 | "\\([[:digit:]]+\\) \\([[:digit:]]+\\) " | |
1178 | "\\([[:digit:]]+\\) \\([[:digit:]]+\\)") o) | |
1179 | (mapcar #'string-to-number | |
1180 | (list (match-string 1 o) | |
1181 | (match-string 2 o) | |
1182 | (match-string 3 o) | |
1183 | (match-string 4 o))))))) | |
1184 | ||
1185 | (defvar doc-view-paper-sizes | |
1186 | '((a4 595 842) | |
1187 | (a4-landscape 842 595) | |
1188 | (letter 612 792) | |
1189 | (letter-landscape 792 612) | |
1190 | (legal 612 1008) | |
1191 | (legal-landscape 1008 612) | |
1192 | (a3 842 1191) | |
1193 | (a3-landscape 1191 842) | |
1194 | (tabloid 792 1224) | |
1195 | (ledger 1224 792)) | |
1196 | "An alist from paper size names to dimensions.") | |
1197 | ||
1198 | (defun doc-view-guess-paper-size (iw ih) | |
1199 | "Guess the paper size according to the aspect ratio." | |
1200 | (cl-labels ((div (x y) | |
1201 | (round (/ (* 100.0 x) y)))) | |
1202 | (let ((ar (div iw ih)) | |
1203 | (al (mapcar (lambda (l) | |
46624b4f | 1204 | (list (div (nth 1 l) (nth 2 l)) (car l))) |
db8a5a18 TH |
1205 | doc-view-paper-sizes))) |
1206 | (cadr (assoc ar al))))) | |
1207 | ||
1208 | (defun doc-view-scale-bounding-box (ps iw ih bb) | |
46624b4f SM |
1209 | (list (/ (* (nth 0 bb) iw) (nth 1 (assoc ps doc-view-paper-sizes))) |
1210 | (/ (* (nth 1 bb) ih) (nth 2 (assoc ps doc-view-paper-sizes))) | |
1211 | (/ (* (nth 2 bb) iw) (nth 1 (assoc ps doc-view-paper-sizes))) | |
1212 | (/ (* (nth 3 bb) ih) (nth 2 (assoc ps doc-view-paper-sizes))))) | |
db8a5a18 TH |
1213 | |
1214 | (defun doc-view-set-slice-from-bounding-box (&optional force-paper-size) | |
1215 | "Set the slice from the document's BoundingBox information. | |
1216 | The result is that the margins are almost completely cropped, | |
1217 | much more accurate than could be done manually using | |
1218 | `doc-view-set-slice-using-mouse'." | |
1219 | (interactive "P") | |
1220 | (let ((bb (doc-view-get-bounding-box))) | |
1221 | (if (not bb) | |
1222 | (message "BoundingBox couldn't be determined") | |
1223 | (let* ((is (image-size (doc-view-current-image) t)) | |
1224 | (iw (car is)) | |
1225 | (ih (cdr is)) | |
bbc7ff25 SM |
1226 | (ps (or (and (null force-paper-size) |
1227 | (doc-view-guess-paper-size iw ih)) | |
db8a5a18 | 1228 | (intern (completing-read "Paper size: " |
bbc7ff25 | 1229 | doc-view-paper-sizes |
db8a5a18 TH |
1230 | nil t)))) |
1231 | (bb (doc-view-scale-bounding-box ps iw ih bb)) | |
1232 | (x1 (nth 0 bb)) | |
1233 | (y1 (nth 1 bb)) | |
1234 | (x2 (nth 2 bb)) | |
1235 | (y2 (nth 3 bb))) | |
1236 | ;; We keep a 2 pixel margin. | |
1237 | (doc-view-set-slice (- x1 2) (- ih y2 2) | |
1238 | (+ (- x2 x1) 4) (+ (- y2 y1) 4)))))) | |
1239 | ||
94dbe99c | 1240 | (defun doc-view-reset-slice () |
e48a5bf9 | 1241 | "Reset the current slice. |
1f75e53d | 1242 | After calling this function whole pages will be visible again." |
94dbe99c | 1243 | (interactive) |
de171465 | 1244 | (setf (doc-view-current-slice) nil) |
94dbe99c | 1245 | ;; Redisplay |
de171465 | 1246 | (doc-view-goto-page (doc-view-current-page))) |
94dbe99c TTN |
1247 | |
1248 | ;;;; Display | |
1249 | ||
1250 | (defun doc-view-insert-image (file &rest args) | |
1251 | "Insert the given png FILE. | |
e48a5bf9 | 1252 | ARGS is a list of image descriptors." |
416f1802 | 1253 | (when doc-view--pending-cache-flush |
c17587fe | 1254 | (clear-image-cache) |
416f1802 | 1255 | (setq doc-view--pending-cache-flush nil)) |
d35f5864 | 1256 | (let ((ol (doc-view-current-overlay))) |
f35ffe5e TH |
1257 | ;; Only insert the image if the buffer is visible. |
1258 | (when (window-live-p (overlay-get ol 'window)) | |
d35f5864 TH |
1259 | (let* ((image (if (and file (file-readable-p file)) |
1260 | (if (not (and doc-view-scale-internally | |
1261 | (fboundp 'imagemagick-types))) | |
1262 | (apply 'create-image file doc-view--image-type nil args) | |
1263 | (unless (member :width args) | |
1264 | (setq args `(,@args :width ,doc-view-image-width))) | |
1265 | (apply 'create-image file 'imagemagick nil args)))) | |
1266 | (slice (doc-view-current-slice)) | |
1267 | (img-width (and image (car (image-size image)))) | |
1268 | (displayed-img-width (if (and image slice) | |
1269 | (* (/ (float (nth 2 slice)) | |
1270 | (car (image-size image 'pixels))) | |
1271 | img-width) | |
1272 | img-width)) | |
1273 | (window-width (window-width (selected-window)))) | |
1274 | (setf (doc-view-current-image) image) | |
1275 | (move-overlay ol (point-min) (point-max)) | |
1276 | ;; In case the window is wider than the image, center the image | |
1277 | ;; horizontally. | |
1278 | (overlay-put ol 'before-string | |
1279 | (when (and image (> window-width displayed-img-width)) | |
1280 | (propertize " " 'display | |
1281 | `(space :align-to (+ center (-0.5 . ,displayed-img-width)))))) | |
1282 | (overlay-put ol 'display | |
1283 | (cond | |
1284 | (image | |
1285 | (if slice | |
1286 | (list (cons 'slice slice) image) | |
1287 | image)) | |
1288 | ;; We're trying to display a page that doesn't exist. | |
416f1802 | 1289 | (doc-view--current-converter-processes |
d35f5864 TH |
1290 | ;; Maybe the page doesn't exist *yet*. |
1291 | "Cannot display this page (yet)!") | |
1292 | (t | |
1293 | ;; Typically happens if the conversion process somehow | |
1294 | ;; failed. Better not signal an error here because it | |
1295 | ;; could prevent a subsequent reconversion from fixing | |
1296 | ;; the problem. | |
1297 | (concat "Cannot display this page!\n" | |
1298 | "Maybe because of a conversion failure!")))) | |
1299 | (let ((win (overlay-get ol 'window))) | |
1300 | (if (stringp (overlay-get ol 'display)) | |
1301 | (progn ;Make sure the text is not scrolled out of view. | |
1302 | (set-window-hscroll win 0) | |
1303 | (set-window-vscroll win 0)) | |
1304 | (let ((hscroll (image-mode-window-get 'hscroll win)) | |
1305 | (vscroll (image-mode-window-get 'vscroll win))) | |
1306 | ;; Reset scroll settings, in case they were changed. | |
1307 | (if hscroll (set-window-hscroll win hscroll)) | |
1308 | (if vscroll (set-window-vscroll win vscroll))))))))) | |
94dbe99c TTN |
1309 | |
1310 | (defun doc-view-sort (a b) | |
1311 | "Return non-nil if A should be sorted before B. | |
416f1802 | 1312 | Predicate for sorting `doc-view--current-files'." |
f4c75497 SM |
1313 | (or (< (length a) (length b)) |
1314 | (and (= (length a) (length b)) | |
1315 | (string< a b)))) | |
94dbe99c | 1316 | |
65073003 SM |
1317 | (defun doc-view-display (buffer &optional force) |
1318 | "Start viewing the document in BUFFER. | |
214abdd4 SM |
1319 | If FORCE is non-nil, start viewing even if the document does not |
1320 | have the page we want to view." | |
65073003 | 1321 | (with-current-buffer buffer |
416f1802 SM |
1322 | (let ((prev-pages doc-view--current-files)) |
1323 | (setq doc-view--current-files | |
1324 | (sort (directory-files (doc-view--current-cache-dir) t | |
bbc7ff25 SM |
1325 | (format doc-view--image-file-pattern |
1326 | "[0-9]+") | |
2b541f9a | 1327 | t) |
56741510 | 1328 | 'doc-view-sort)) |
416f1802 | 1329 | (unless (eq (length prev-pages) (length doc-view--current-files)) |
5ad86e34 | 1330 | (force-mode-line-update)) |
83600dc8 SM |
1331 | (dolist (win (or (get-buffer-window-list buffer nil t) |
1332 | (list t))) | |
10b6e7c1 | 1333 | (let* ((page (doc-view-current-page win)) |
2b541f9a | 1334 | (pagefile (expand-file-name |
bbc7ff25 | 1335 | (format doc-view--image-file-pattern page) |
416f1802 | 1336 | (doc-view--current-cache-dir)))) |
10b6e7c1 CY |
1337 | (when (or force |
1338 | (and (not (member pagefile prev-pages)) | |
416f1802 | 1339 | (member pagefile doc-view--current-files))) |
83600dc8 SM |
1340 | (if (windowp win) |
1341 | (with-selected-window win | |
1342 | (cl-assert (eq (current-buffer) buffer) t) | |
1343 | (doc-view-goto-page page)) | |
db8a5a18 | 1344 | (doc-view-goto-page page)))))))) |
94dbe99c TTN |
1345 | |
1346 | (defun doc-view-buffer-message () | |
c17587fe SM |
1347 | ;; Only show this message initially, not when refreshing the buffer (in which |
1348 | ;; case it's better to keep displaying the "stale" page while computing | |
1349 | ;; the fresh new ones). | |
de171465 SM |
1350 | (unless (overlay-get (doc-view-current-overlay) 'display) |
1351 | (overlay-put (doc-view-current-overlay) 'display | |
c17587fe SM |
1352 | (concat (propertize "Welcome to DocView!" 'face 'bold) |
1353 | "\n" | |
1354 | " | |
1f75e53d | 1355 | If you see this buffer it means that the document you want to view is being |
f4c75497 | 1356 | converted to PNG and the conversion of the first page hasn't finished yet or |
94dbe99c TTN |
1357 | `doc-view-conversion-refresh-interval' is set to nil. |
1358 | ||
1359 | For now these keys are useful: | |
1360 | ||
1ca678aa | 1361 | `q' : Bury this buffer. Conversion will go on in background. |
937cb3fb | 1362 | `k' : Kill the conversion process and this buffer. |
c17587fe | 1363 | `K' : Kill the conversion process.\n")))) |
94dbe99c | 1364 | |
aa360da1 GM |
1365 | (declare-function tooltip-show "tooltip" (text &optional use-echo-area)) |
1366 | ||
94dbe99c TTN |
1367 | (defun doc-view-show-tooltip () |
1368 | (interactive) | |
de171465 | 1369 | (tooltip-show (doc-view-current-info))) |
94dbe99c | 1370 | |
515357c2 TH |
1371 | (defun doc-view-open-text () |
1372 | "Open a buffer with the current doc's contents as text." | |
1373 | (interactive) | |
416f1802 | 1374 | (if doc-view--current-converter-processes |
515357c2 | 1375 | (message "DocView: please wait till conversion finished.") |
416f1802 | 1376 | (let ((txt (expand-file-name "doc.txt" (doc-view--current-cache-dir)))) |
515357c2 | 1377 | (if (file-readable-p txt) |
5b355315 TH |
1378 | (let ((name (concat "Text contents of " |
1379 | (file-name-nondirectory buffer-file-name))) | |
1380 | (dir (file-name-directory buffer-file-name))) | |
1381 | (with-current-buffer (find-file txt) | |
1382 | (rename-buffer name) | |
1383 | (setq default-directory dir))) | |
b4cb319f | 1384 | (doc-view-doc->txt txt 'doc-view-open-text))))) |
515357c2 | 1385 | |
937cb3fb | 1386 | ;;;;; Toggle between editing and viewing |
640602f7 | 1387 | |
83600dc8 SM |
1388 | (defvar-local doc-view-saved-settings nil |
1389 | "Doc-view settings saved while in some other mode.") | |
1390 | (put 'doc-view-saved-settings 'permanent-local t) | |
1391 | ||
640602f7 | 1392 | (defun doc-view-toggle-display () |
937cb3fb | 1393 | "Toggle between editing a document as text or viewing it." |
640602f7 | 1394 | (interactive) |
937cb3fb GM |
1395 | (if (eq major-mode 'doc-view-mode) |
1396 | ;; Switch to editing mode | |
1397 | (progn | |
1398 | (doc-view-kill-proc) | |
1399 | (setq buffer-read-only nil) | |
ad727c81 TH |
1400 | ;; Switch to the previously used major mode or fall back to |
1401 | ;; normal mode. | |
291cc045 | 1402 | (doc-view-fallback-mode) |
c17587fe | 1403 | (doc-view-minor-mode 1)) |
937cb3fb GM |
1404 | ;; Switch to doc-view-mode |
1405 | (when (and (buffer-modified-p) | |
1406 | (y-or-n-p "The buffer has been modified. Save the changes? ")) | |
1407 | (save-buffer)) | |
937cb3fb | 1408 | (doc-view-mode))) |
640602f7 | 1409 | |
94dbe99c TTN |
1410 | ;;;; Searching |
1411 | ||
515357c2 | 1412 | |
94dbe99c TTN |
1413 | (defun doc-view-search-internal (regexp file) |
1414 | "Return a list of FILE's pages that contain text matching REGEXP. | |
1ca678aa MC |
1415 | The value is an alist of the form (PAGE CONTEXTS) where PAGE is |
1416 | the pagenumber and CONTEXTS are all lines of text containing a match." | |
94dbe99c TTN |
1417 | (with-temp-buffer |
1418 | (insert-file-contents file) | |
1419 | (let ((page 1) | |
1ca678aa MC |
1420 | (lastpage 1) |
1421 | matches) | |
94dbe99c | 1422 | (while (re-search-forward (concat "\\(?:\\([\f]\\)\\|\\(" |
1ca678aa | 1423 | regexp "\\)\\)") nil t) |
069b4ce3 | 1424 | (when (match-string 1) (setq page (1+ page))) |
1ca678aa MC |
1425 | (when (match-string 2) |
1426 | (if (/= page lastpage) | |
c17587fe | 1427 | (push (cons page |
515357c2 TH |
1428 | (list (buffer-substring |
1429 | (line-beginning-position) | |
1430 | (line-end-position)))) | |
1431 | matches) | |
1ca678aa MC |
1432 | (setq matches (cons |
1433 | (append | |
1434 | (or | |
1435 | ;; This page already is a match. | |
1436 | (car matches) | |
1437 | ;; This is the first match on page. | |
1438 | (list page)) | |
1439 | (list (buffer-substring | |
1440 | (line-beginning-position) | |
1441 | (line-end-position)))) | |
1442 | (cdr matches)))) | |
1443 | (setq lastpage page))) | |
94dbe99c TTN |
1444 | (nreverse matches)))) |
1445 | ||
1446 | (defun doc-view-search-no-of-matches (list) | |
1447 | "Extract the number of matches from the search result LIST." | |
1448 | (let ((no 0)) | |
1449 | (dolist (p list) | |
1450 | (setq no (+ no (1- (length p))))) | |
1451 | no)) | |
1452 | ||
7baca0fa JL |
1453 | (defun doc-view-search-backward (new-query) |
1454 | "Call `doc-view-search' for backward search. | |
1455 | If prefix NEW-QUERY is given, ask for a new regexp." | |
1456 | (interactive "P") | |
da99b369 | 1457 | (doc-view-search new-query t)) |
7baca0fa JL |
1458 | |
1459 | (defun doc-view-search (new-query &optional backward) | |
1460 | "Jump to the next match or initiate a new search if NEW-QUERY is given. | |
94dbe99c | 1461 | If the current document hasn't been transformed to plain text |
7baca0fa JL |
1462 | till now do that first. |
1463 | If BACKWARD is non-nil, jump to the previous match." | |
1464 | (interactive "P") | |
da99b369 | 1465 | (if (and (not new-query) |
416f1802 | 1466 | doc-view--current-search-matches) |
7baca0fa JL |
1467 | (if backward |
1468 | (doc-view-search-previous-match 1) | |
1469 | (doc-view-search-next-match 1)) | |
1470 | ;; New search, so forget the old results. | |
416f1802 | 1471 | (setq doc-view--current-search-matches nil) |
7baca0fa | 1472 | (let ((txt (expand-file-name "doc.txt" |
416f1802 | 1473 | (doc-view--current-cache-dir)))) |
7baca0fa JL |
1474 | (if (file-readable-p txt) |
1475 | (progn | |
416f1802 | 1476 | (setq doc-view--current-search-matches |
7baca0fa JL |
1477 | (doc-view-search-internal |
1478 | (read-from-minibuffer "Regexp: ") | |
1479 | txt)) | |
1480 | (message "DocView: search yielded %d matches." | |
1481 | (doc-view-search-no-of-matches | |
416f1802 | 1482 | doc-view--current-search-matches))) |
7baca0fa | 1483 | ;; We must convert to TXT first! |
416f1802 | 1484 | (if doc-view--current-converter-processes |
7baca0fa | 1485 | (message "DocView: please wait till conversion finished.") |
b4cb319f | 1486 | (doc-view-doc->txt txt (lambda () (doc-view-search nil)))))))) |
94dbe99c TTN |
1487 | |
1488 | (defun doc-view-search-next-match (arg) | |
1489 | "Go to the ARGth next matching page." | |
1490 | (interactive "p") | |
937cb3fb | 1491 | (let* ((next-pages (doc-view-remove-if |
de171465 | 1492 | (lambda (i) (<= (car i) (doc-view-current-page))) |
416f1802 | 1493 | doc-view--current-search-matches)) |
1ca678aa | 1494 | (page (car (nth (1- arg) next-pages)))) |
94dbe99c | 1495 | (if page |
1ca678aa | 1496 | (doc-view-goto-page page) |
94dbe99c | 1497 | (when (and |
416f1802 | 1498 | doc-view--current-search-matches |
1ca678aa | 1499 | (y-or-n-p "No more matches after current page. Wrap to first match? ")) |
416f1802 | 1500 | (doc-view-goto-page (caar doc-view--current-search-matches)))))) |
94dbe99c TTN |
1501 | |
1502 | (defun doc-view-search-previous-match (arg) | |
1503 | "Go to the ARGth previous matching page." | |
1504 | (interactive "p") | |
937cb3fb | 1505 | (let* ((prev-pages (doc-view-remove-if |
de171465 | 1506 | (lambda (i) (>= (car i) (doc-view-current-page))) |
416f1802 | 1507 | doc-view--current-search-matches)) |
1ca678aa | 1508 | (page (car (nth (1- arg) (nreverse prev-pages))))) |
94dbe99c | 1509 | (if page |
1ca678aa | 1510 | (doc-view-goto-page page) |
94dbe99c | 1511 | (when (and |
416f1802 | 1512 | doc-view--current-search-matches |
1ca678aa | 1513 | (y-or-n-p "No more matches before current page. Wrap to last match? ")) |
416f1802 | 1514 | (doc-view-goto-page (caar (last doc-view--current-search-matches))))))) |
94dbe99c | 1515 | |
640602f7 | 1516 | ;;;; User interface commands and the mode |
94dbe99c | 1517 | |
0d17c4b9 | 1518 | (put 'doc-view-mode 'mode-class 'special) |
c17587fe | 1519 | |
515357c2 TH |
1520 | (defun doc-view-already-converted-p () |
1521 | "Return non-nil if the current doc was already converted." | |
416f1802 | 1522 | (and (file-exists-p (doc-view--current-cache-dir)) |
bdd42899 SM |
1523 | ;; Check that the resolution info is there, otherwise it means |
1524 | ;; the conversion is incomplete. | |
1525 | (file-readable-p (expand-file-name "resolution.el" | |
416f1802 | 1526 | (doc-view--current-cache-dir))) |
2b541f9a | 1527 | (> (length (directory-files |
416f1802 | 1528 | (doc-view--current-cache-dir) |
bbc7ff25 | 1529 | nil (format doc-view--image-file-pattern "[0-9]+"))) |
bdd42899 | 1530 | 0))) |
515357c2 | 1531 | |
c17587fe | 1532 | (defun doc-view-initiate-display () |
2b541f9a | 1533 | ;; Switch to image display if possible. |
322f4559 | 1534 | (if (doc-view-mode-p doc-view-doc-type) |
c17587fe SM |
1535 | (progn |
1536 | (doc-view-buffer-message) | |
de171465 | 1537 | (setf (doc-view-current-page) (or (doc-view-current-page) 1)) |
515357c2 | 1538 | (if (doc-view-already-converted-p) |
c17587fe SM |
1539 | (progn |
1540 | (message "DocView: using cached files!") | |
bbc7ff25 | 1541 | ;; Load the saved resolution. |
416f1802 SM |
1542 | (let* ((res-file |
1543 | (expand-file-name "resolution.el" | |
1544 | (doc-view--current-cache-dir))) | |
bdd42899 SM |
1545 | (res |
1546 | (with-temp-buffer | |
1547 | (when (file-readable-p res-file) | |
1548 | (insert-file-contents res-file) | |
1549 | (read (current-buffer)))))) | |
1550 | (when (numberp res) | |
bbc7ff25 | 1551 | (setq-local doc-view-resolution res))) |
65073003 | 1552 | (doc-view-display (current-buffer) 'force)) |
c17587fe SM |
1553 | (doc-view-convert-current-doc)) |
1554 | (message | |
1555 | "%s" | |
1556 | (substitute-command-keys | |
1557 | (concat "Type \\[doc-view-toggle-display] to toggle between " | |
1558 | "editing or viewing the document.")))) | |
1559 | (message | |
1560 | "%s" | |
0855c2ca | 1561 | (concat "No PNG support is available, or some conversion utility for " |
416f1802 | 1562 | (file-name-extension doc-view--buffer-file-name) |
0855c2ca | 1563 | " files is missing.")) |
1281bd51 TH |
1564 | (when (and (executable-find doc-view-pdftotext-program) |
1565 | (y-or-n-p | |
1566 | "Unable to render file. View extracted text instead? ")) | |
1567 | (doc-view-open-text)) | |
1568 | (doc-view-toggle-display))) | |
94dbe99c | 1569 | |
e0385bf4 | 1570 | (defvar bookmark-make-record-function) |
069b4ce3 | 1571 | |
65073003 SM |
1572 | (defun doc-view-clone-buffer-hook () |
1573 | ;; FIXME: There are several potential problems linked with reconversion | |
1574 | ;; and auto-revert when we have indirect buffers because they share their | |
1575 | ;; /tmp cache directory. This sharing is good (you'd rather not reconvert | |
1576 | ;; for each clone), but that means that clones need to collaborate a bit. | |
1577 | ;; I guess it mostly means: detect when a reconversion process is already | |
1578 | ;; running, and run the sentinel in all clones. | |
515357c2 | 1579 | ;; |
de171465 | 1580 | ;; Maybe the clones should really have a separate /tmp directory |
65073003 SM |
1581 | ;; so they could have a different resolution and you could use clones |
1582 | ;; for zooming. | |
de171465 SM |
1583 | (remove-overlays (point-min) (point-max) 'doc-view t) |
1584 | (if (consp image-mode-winprops-alist) (setq image-mode-winprops-alist nil))) | |
65073003 | 1585 | |
eb79098b SM |
1586 | (defun doc-view-intersection (l1 l2) |
1587 | (let ((l ())) | |
1588 | (dolist (x l1) (if (memq x l2) (push x l))) | |
1589 | l)) | |
1590 | ||
291cc045 TH |
1591 | (defun doc-view-set-doc-type () |
1592 | "Figure out the current document type (`doc-view-doc-type')." | |
1593 | (let ((name-types | |
1594 | (when buffer-file-name | |
1595 | (cdr (assoc (file-name-extension buffer-file-name) | |
1596 | '( | |
1597 | ;; DVI | |
1598 | ("dvi" dvi) | |
1599 | ||
1600 | ("pdf" pdf) ("epdf" pdf) | |
1601 | ;; PostScript | |
1602 | ("ps" ps) ("eps" ps) | |
2b541f9a EP |
1603 | ;; DjVu |
1604 | ("djvu" djvu) | |
291cc045 TH |
1605 | ;; OpenDocument formats |
1606 | ("odt" odf) ("ods" odf) ("odp" odf) ("odg" odf) | |
1607 | ("odc" odf) ("odi" odf) ("odm" odf) ("ott" odf) | |
1608 | ("ots" odf) ("otp" odf) ("otg" odf) | |
1609 | ;; Microsoft Office formats (also handled | |
1610 | ;; by the odf conversion chain) | |
1611 | ("doc" odf) ("docx" odf) ("xls" odf) ("xlsx" odf) | |
1612 | ("ppt" odf) ("pptx" odf)))))) | |
1613 | (content-types | |
1614 | (save-excursion | |
1615 | (goto-char (point-min)) | |
1616 | (cond | |
1617 | ((looking-at "%!") '(ps)) | |
1618 | ((looking-at "%PDF") '(pdf)) | |
2b541f9a EP |
1619 | ((looking-at "\367\002") '(dvi)) |
1620 | ((looking-at "AT&TFORM") '(djvu)))))) | |
416f1802 SM |
1621 | (setq-local |
1622 | doc-view-doc-type | |
1623 | (car (or (doc-view-intersection name-types content-types) | |
1624 | (when (and name-types content-types) | |
1625 | (error "Conflicting types: name says %s but content says %s" | |
1626 | name-types content-types)) | |
1627 | name-types content-types | |
1628 | (error "Cannot determine the document type")))))) | |
291cc045 | 1629 | |
2b541f9a EP |
1630 | (defun doc-view-set-up-single-converter () |
1631 | "Find the right single-page converter for the current document type" | |
1632 | (pcase-let ((`(,conv-function ,type ,extension) | |
1633 | (pcase doc-view-doc-type | |
bbc7ff25 SM |
1634 | (`djvu (list #'doc-view-djvu->tiff-converter-ddjvu 'tiff "tif")) |
1635 | (_ (list doc-view-pdf->png-converter-function 'png "png"))))) | |
2b541f9a EP |
1636 | (setq-local doc-view-single-page-converter-function conv-function) |
1637 | (setq-local doc-view--image-type type) | |
bbc7ff25 | 1638 | (setq-local doc-view--image-file-pattern (concat "page-%s." extension)))) |
2b541f9a | 1639 | |
57b9823e TH |
1640 | ;; desktop.el integration |
1641 | ||
50105835 | 1642 | (defun doc-view-desktop-save-buffer (_desktop-dirname) |
57b9823e TH |
1643 | `((page . ,(doc-view-current-page)) |
1644 | (slice . ,(doc-view-current-slice)))) | |
1645 | ||
50105835 SM |
1646 | (declare-function desktop-restore-file-buffer "desktop" |
1647 | (buffer-filename buffer-name buffer-misc)) | |
1648 | ||
57b9823e TH |
1649 | (defun doc-view-restore-desktop-buffer (file name misc) |
1650 | (let ((page (cdr (assq 'page misc))) | |
1651 | (slice (cdr (assq 'slice misc)))) | |
50105835 | 1652 | (desktop-restore-file-buffer file name misc) |
57b9823e TH |
1653 | (with-selected-window (or (get-buffer-window (current-buffer) 0) |
1654 | (selected-window)) | |
1655 | (doc-view-goto-page page) | |
1656 | (when slice (apply 'doc-view-set-slice slice))))) | |
1657 | ||
416f1802 SM |
1658 | (add-to-list 'desktop-buffer-mode-handlers |
1659 | '(doc-view-mode . doc-view-restore-desktop-buffer)) | |
57b9823e | 1660 | |
640602f7 | 1661 | ;;;###autoload |
937cb3fb | 1662 | (defun doc-view-mode () |
640602f7 | 1663 | "Major mode in DocView buffers. |
06a21f70 TH |
1664 | |
1665 | DocView Mode is an Emacs document viewer. It displays PDF, PS | |
1666 | and DVI files (as PNG images) in Emacs buffers. | |
1667 | ||
640602f7 | 1668 | You can use \\<doc-view-mode-map>\\[doc-view-toggle-display] to |
5c1f16b0 SM |
1669 | toggle between displaying the document or editing it as text. |
1670 | \\{doc-view-mode-map}" | |
937cb3fb | 1671 | (interactive) |
f9adf05b | 1672 | |
96fe38a8 | 1673 | (if (= (point-min) (point-max)) |
85699772 | 1674 | ;; The doc is empty or doesn't exist at all, so fallback to |
96fe38a8 SM |
1675 | ;; another mode. We used to also check file-exists-p, but this |
1676 | ;; returns nil for tar members. | |
291cc045 | 1677 | (doc-view-fallback-mode) |
06a21f70 | 1678 | |
83600dc8 | 1679 | (let* ((prev-major-mode (if (derived-mode-p 'doc-view-mode) |
416f1802 | 1680 | doc-view--previous-major-mode |
83600dc8 | 1681 | (unless (eq major-mode 'fundamental-mode) |
ad727c81 | 1682 | major-mode)))) |
06a21f70 | 1683 | (kill-all-local-variables) |
416f1802 | 1684 | (setq-local doc-view--previous-major-mode prev-major-mode)) |
83600dc8 SM |
1685 | |
1686 | (dolist (var doc-view-saved-settings) | |
1687 | (set (make-local-variable (car var)) (cdr var))) | |
bc19637d | 1688 | |
06a21f70 | 1689 | ;; Figure out the document type. |
291cc045 TH |
1690 | (unless doc-view-doc-type |
1691 | (doc-view-set-doc-type)) | |
2b541f9a | 1692 | (doc-view-set-up-single-converter) |
bc19637d | 1693 | |
06a21f70 TH |
1694 | (doc-view-make-safe-dir doc-view-cache-directory) |
1695 | ;; Handle compressed files, remote files, files inside archives | |
416f1802 SM |
1696 | (setq-local doc-view--buffer-file-name |
1697 | (cond | |
1698 | (jka-compr-really-do-compress | |
1699 | ;; FIXME: there's a risk of name conflicts here. | |
1700 | (expand-file-name | |
1701 | (file-name-nondirectory | |
1702 | (file-name-sans-extension buffer-file-name)) | |
1703 | doc-view-cache-directory)) | |
1704 | ;; Is the file readable by local processes? | |
1705 | ;; We used to use `file-remote-p' but it's unclear what it's | |
1706 | ;; supposed to return nil for things like local files accessed | |
1707 | ;; via `su' or via file://... | |
1708 | ((let ((file-name-handler-alist nil)) | |
1709 | (not (and buffer-file-name | |
1710 | (file-readable-p buffer-file-name)))) | |
1711 | ;; FIXME: there's a risk of name conflicts here. | |
1712 | (expand-file-name | |
1713 | (if buffer-file-name | |
1714 | (file-name-nondirectory buffer-file-name) | |
1715 | (buffer-name)) | |
1716 | doc-view-cache-directory)) | |
1717 | (t buffer-file-name))) | |
1718 | (when (not (string= doc-view--buffer-file-name buffer-file-name)) | |
1719 | (write-region nil nil doc-view--buffer-file-name)) | |
bc19637d | 1720 | |
06a21f70 TH |
1721 | (add-hook 'change-major-mode-hook |
1722 | (lambda () | |
1723 | (doc-view-kill-proc) | |
1724 | (remove-overlays (point-min) (point-max) 'doc-view t)) | |
1725 | nil t) | |
1726 | (add-hook 'clone-indirect-buffer-hook 'doc-view-clone-buffer-hook nil t) | |
1727 | (add-hook 'kill-buffer-hook 'doc-view-kill-proc nil t) | |
57b9823e TH |
1728 | (when (and (boundp 'desktop-save-mode) |
1729 | desktop-save-mode) | |
1730 | (setq-local desktop-save-buffer 'doc-view-desktop-save-buffer)) | |
bc19637d | 1731 | |
06a21f70 TH |
1732 | (remove-overlays (point-min) (point-max) 'doc-view t) ;Just in case. |
1733 | ;; Keep track of display info ([vh]scroll, page number, overlay, | |
1734 | ;; ...) for each window in which this document is shown. | |
1735 | (add-hook 'image-mode-new-window-functions | |
1736 | 'doc-view-new-window-function nil t) | |
1737 | (image-mode-setup-winprops) | |
bc19637d | 1738 | |
bbc7ff25 SM |
1739 | (setq-local mode-line-position |
1740 | '(" P" (:eval (number-to-string (doc-view-current-page))) | |
1741 | "/" (:eval (number-to-string (doc-view-last-page-number))))) | |
06a21f70 | 1742 | ;; Don't scroll unless the user specifically asked for it. |
bbc7ff25 SM |
1743 | (setq-local auto-hscroll-mode nil) |
1744 | (setq-local mwheel-scroll-up-function #'doc-view-scroll-up-or-next-page) | |
1745 | (setq-local mwheel-scroll-down-function | |
1746 | #'doc-view-scroll-down-or-previous-page) | |
1747 | (setq-local cursor-type nil) | |
06a21f70 | 1748 | (use-local-map doc-view-mode-map) |
bbc7ff25 SM |
1749 | (add-hook 'after-revert-hook 'doc-view-reconvert-doc nil t) |
1750 | (setq-local bookmark-make-record-function | |
1751 | #'doc-view-bookmark-make-record) | |
06a21f70 TH |
1752 | (setq mode-name "DocView" |
1753 | buffer-read-only t | |
1754 | major-mode 'doc-view-mode) | |
1755 | (doc-view-initiate-display) | |
d1d33062 TH |
1756 | ;; Switch off view-mode explicitly, because doc-view-mode is the |
1757 | ;; canonical view mode for PDF/PS/DVI files. This could be | |
1758 | ;; switched on automatically depending on the value of | |
1759 | ;; `view-read-only'. | |
bbc7ff25 | 1760 | (setq-local view-read-only nil) |
06a21f70 | 1761 | (run-mode-hooks 'doc-view-mode-hook))) |
937cb3fb | 1762 | |
291cc045 TH |
1763 | (defun doc-view-fallback-mode () |
1764 | "Fallback to the previous or next best major mode." | |
83600dc8 SM |
1765 | (let ((vars (if (derived-mode-p 'doc-view-mode) |
1766 | (mapcar (lambda (var) (cons var (symbol-value var))) | |
1767 | '(doc-view-resolution | |
1768 | image-mode-winprops-alist))))) | |
e7a1c32d | 1769 | (remove-overlays (point-min) (point-max) 'doc-view t) |
416f1802 SM |
1770 | (if doc-view--previous-major-mode |
1771 | (funcall doc-view--previous-major-mode) | |
83600dc8 SM |
1772 | (let ((auto-mode-alist |
1773 | (rassq-delete-all | |
1774 | 'doc-view-mode-maybe | |
1775 | (rassq-delete-all 'doc-view-mode | |
1776 | (copy-alist auto-mode-alist))))) | |
1777 | (normal-mode))) | |
1778 | (when vars | |
1779 | (setq-local doc-view-saved-settings vars)))) | |
291cc045 TH |
1780 | |
1781 | ;;;###autoload | |
1782 | (defun doc-view-mode-maybe () | |
1783 | "Switch to `doc-view-mode' if possible. | |
1784 | If the required external tools are not available, then fallback | |
1785 | to the next best mode." | |
1786 | (condition-case nil | |
1787 | (doc-view-set-doc-type) | |
1788 | (error (doc-view-fallback-mode))) | |
1789 | (if (doc-view-mode-p doc-view-doc-type) | |
1790 | (doc-view-mode) | |
1791 | (doc-view-fallback-mode))) | |
1792 | ||
937cb3fb GM |
1793 | ;;;###autoload |
1794 | (define-minor-mode doc-view-minor-mode | |
06e21633 CY |
1795 | "Toggle displaying buffer via Doc View (Doc View minor mode). |
1796 | With a prefix argument ARG, enable Doc View minor mode if ARG is | |
1797 | positive, and disable it otherwise. If called from Lisp, enable | |
1798 | the mode if ARG is omitted or nil. | |
1799 | ||
937cb3fb GM |
1800 | See the command `doc-view-mode' for more information on this mode." |
1801 | nil " DocView" doc-view-minor-mode-map | |
1802 | :group 'doc-view | |
1803 | (when doc-view-minor-mode | |
1804 | (add-hook 'change-major-mode-hook (lambda () (doc-view-minor-mode -1)) nil t) | |
1805 | (message | |
1806 | "%s" | |
1807 | (substitute-command-keys | |
1808 | "Type \\[doc-view-toggle-display] to toggle between editing or viewing the document.")))) | |
94dbe99c TTN |
1809 | |
1810 | (defun doc-view-clear-cache () | |
1811 | "Delete the whole cache (`doc-view-cache-directory')." | |
1812 | (interactive) | |
515357c2 | 1813 | (dired-delete-file doc-view-cache-directory 'always)) |
94dbe99c TTN |
1814 | |
1815 | (defun doc-view-dired-cache () | |
1816 | "Open `dired' in `doc-view-cache-directory'." | |
1817 | (interactive) | |
1818 | (dired doc-view-cache-directory)) | |
1819 | ||
94dbe99c | 1820 | |
1666a6b3 TH |
1821 | ;;;; Bookmark integration |
1822 | ||
e44fa724 KF |
1823 | (declare-function bookmark-make-record-default |
1824 | "bookmark" (&optional no-file no-context posn)) | |
a9f8b49b | 1825 | (declare-function bookmark-prop-get "bookmark" (bookmark prop)) |
43f8b275 | 1826 | (declare-function bookmark-default-handler "bookmark" (bmk)) |
a9f8b49b | 1827 | |
32a091dd | 1828 | (defun doc-view-bookmark-make-record () |
43f8b275 SM |
1829 | (nconc (bookmark-make-record-default) |
1830 | `((page . ,(doc-view-current-page)) | |
1831 | (handler . doc-view-bookmark-jump)))) | |
1666a6b3 | 1832 | |
069b4ce3 | 1833 | |
1666a6b3 TH |
1834 | ;;;###autoload |
1835 | (defun doc-view-bookmark-jump (bmk) | |
03e26a79 | 1836 | ;; This implements the `handler' function interface for record type |
e0385bf4 | 1837 | ;; returned by `doc-view-bookmark-make-record', which see. |
43f8b275 SM |
1838 | (prog1 (bookmark-default-handler bmk) |
1839 | (let ((page (bookmark-prop-get bmk 'page))) | |
1666a6b3 | 1840 | (when (not (eq major-mode 'doc-view-mode)) |
43f8b275 | 1841 | (doc-view-toggle-display)) |
a9f8b49b | 1842 | (with-selected-window |
94d11cb5 IK |
1843 | (or (get-buffer-window (current-buffer) 0) |
1844 | (selected-window)) | |
1845 | (doc-view-goto-page page))))) | |
1666a6b3 | 1846 | |
069b4ce3 GM |
1847 | |
1848 | (provide 'doc-view) | |
1849 | ||
1850 | ;; Local Variables: | |
f0da764a | 1851 | ;; eval: (outline-minor-mode 1) |
069b4ce3 GM |
1852 | ;; End: |
1853 | ||
94dbe99c | 1854 | ;;; doc-view.el ends here |