;; This file is part of GNU Emacs.
-;; GNU Emacs is free software; you can redistribute it and/or modify
+;; GNU Emacs is free software: you can redistribute it and/or modify
;; it under the terms of the GNU General Public License as published by
-;; the Free Software Foundation; either version 3, or (at your option)
-;; any later version.
+;; the Free Software Foundation, either version 3 of the License, or
+;; (at your option) any later version.
;; GNU Emacs is distributed in the hope that it will be useful,
;; but WITHOUT ANY WARRANTY; without even the implied warranty of
;; GNU General Public License for more details.
;; You should have received a copy of the GNU General Public License
-;; along with GNU Emacs; see the file COPYING. If not, write to the
-;; Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
-;; Boston, MA 02110-1301, USA.
+;; along with GNU Emacs. If not, see <http://www.gnu.org/licenses/>.
;;; Requirements:
;; doc-view.el requires GNU Emacs 22.1 or newer. You also need Ghostscript,
-;; `dvipdfm' which comes with teTeX and `pdftotext', which comes with xpdf
-;; (http://www.foolabs.com/xpdf/) or poppler (http://poppler.freedesktop.org/).
+;; `dvipdf' (comes with Ghostscript) or `dvipdfm' (comes with teTeX or TeXLive)
+;; and `pdftotext', which comes with xpdf (http://www.foolabs.com/xpdf/) or
+;; poppler (http://poppler.freedesktop.org/).
;;; Commentary:
;; - share more code with image-mode.
;; - better menu.
;; - Bind slicing to a drag event.
-;; - doc-view-fit-doc-to-window and doc-view-fit-window-to-doc.
+;; - doc-view-fit-doc-to-window and doc-view-fit-window-to-doc?
;; - zoom the region around the cursor (like xdvi).
;; - get rid of the silly arrow in the fringe.
;; - improve anti-aliasing (pdf-utils gets it better).
;;; Code:
+(eval-when-compile (require 'cl))
(require 'dired)
(require 'image-mode)
(require 'jka-compr)
"Program to convert DVI files to PDF.
DVI file will be converted to PDF before the resulting PDF is
-converted to PNG."
+converted to PNG.
+
+If this and `doc-view-dvipdf-program' are set,
+`doc-view-dvipdf-program' will be preferred."
+ :type 'file
+ :group 'doc-view)
+
+(defcustom doc-view-dvipdf-program (executable-find "dvipdf")
+ "Program to convert DVI files to PDF.
+
+DVI file will be converted to PDF before the resulting PDF is
+converted to PNG.
+
+If this and `doc-view-dvipdfm-program' are set,
+`doc-view-dvipdf-program' will be preferred."
:type 'file
:group 'doc-view)
(let ((ol (image-mode-window-get 'overlay winprops)))
(if ol
(setq ol (copy-overlay ol))
+ (assert (not (get-char-property (point-min) 'display)))
(setq ol (make-overlay (point-min) (point-max) nil t))
(overlay-put ol 'doc-view t))
(overlay-put ol 'window (car winprops))
(defvar doc-view-current-files nil
"Only used internally.")
+(make-variable-buffer-local 'doc-view-current-files)
-(defvar doc-view-current-converter-process nil
+(defvar doc-view-current-converter-processes nil
"Only used internally.")
+(make-variable-buffer-local 'doc-view-current-converter-processes)
(defvar doc-view-current-timer nil
"Only used internally.")
+(make-variable-buffer-local 'doc-view-current-timer)
(defvar doc-view-current-cache-dir nil
"Only used internally.")
+(make-variable-buffer-local 'doc-view-current-cache-dir)
(defvar doc-view-current-search-matches nil
"Only used internally.")
+(make-variable-buffer-local 'doc-view-current-search-matches)
(defvar doc-view-pending-cache-flush nil
"Only used internally.")
the (uncompressed, extracted) file residing in
`doc-view-cache-directory'.")
+(defvar doc-view-doc-type nil
+ "The type of document in the current buffer.
+Can be `dvi', `pdf', or `ps'.")
+
;;;; DocView Keymaps
(defvar doc-view-mode-map
(let ((map (make-sparse-keymap)))
- (suppress-keymap map)
+ (set-keymap-parent map image-mode-map)
;; Navigation in the document
(define-key map (kbd "n") 'doc-view-next-page)
(define-key map (kbd "p") 'doc-view-previous-page)
(define-key map (kbd "M-<") 'doc-view-first-page)
(define-key map (kbd "M->") 'doc-view-last-page)
(define-key map [remap goto-line] 'doc-view-goto-page)
- (define-key map [remap scroll-up] 'image-scroll-up)
- (define-key map [remap scroll-down] 'image-scroll-down)
;; Zoom in/out.
(define-key map "+" 'doc-view-enlarge)
(define-key map "-" 'doc-view-shrink)
- ;; Killing/burying the buffer (and the process)
- (define-key map (kbd "q") 'bury-buffer)
+ ;; Killing the buffer (and the process)
(define-key map (kbd "k") 'doc-view-kill-proc-and-buffer)
(define-key map (kbd "K") 'doc-view-kill-proc)
;; Slicing the image
(define-key map (kbd "C-s") 'doc-view-search)
(define-key map (kbd "<find>") 'doc-view-search)
(define-key map (kbd "C-r") 'doc-view-search-backward)
- ;; Scrolling
- (define-key map [remap forward-char] 'image-forward-hscroll)
- (define-key map [remap backward-char] 'image-backward-hscroll)
- (define-key map [remap next-line] 'image-next-line)
- (define-key map [remap previous-line] 'image-previous-line)
;; Show the tooltip
(define-key map (kbd "C-t") 'doc-view-show-tooltip)
;; Toggle between text and image display or editing
(when (and (> page len)
;; As long as the converter is running, we don't know
;; how many pages will be available.
- (null doc-view-current-converter-process))
+ (null doc-view-current-converter-processes))
(setq page len)))
(setf (doc-view-current-page) page
(doc-view-current-info)
(propertize
(format "Page %d of %d." page len) 'face 'bold)
;; Tell user if converting isn't finished yet
- (if doc-view-current-converter-process
+ (if doc-view-current-converter-processes
" (still converting...)\n"
"\n")
;; Display context infos if this page matches the last search
;; We used to find the file name from doc-view-current-files but
;; that's not right if the pages are not generated sequentially
;; or if the page isn't in doc-view-current-files yet.
- (doc-view-insert-image (expand-file-name (format "page-%d.png" page)
- (doc-view-current-cache-dir))
- :pointer 'arrow)
+ (let ((file (expand-file-name (format "page-%d.png" page)
+ (doc-view-current-cache-dir))))
+ (doc-view-insert-image file :pointer 'arrow)
+ (when (and (not (file-exists-p file))
+ doc-view-current-converter-processes)
+ ;; The PNG file hasn't been generated yet.
+ (doc-view-pdf->png-1 doc-view-buffer-file-name file page
+ (lexical-let ((page page)
+ (win (selected-window)))
+ (lambda ()
+ (and (eq (current-buffer) (window-buffer win))
+ ;; If we changed page in the mean
+ ;; time, don't mess things up.
+ (eq (doc-view-current-page win) page)
+ (with-selected-window win
+ (doc-view-goto-page page))))))))
(overlay-put (doc-view-current-overlay)
'help-echo (doc-view-current-info))))
(let ((cur-page (doc-view-current-page)))
(doc-view-next-page)
(when (/= cur-page (doc-view-current-page))
- (set-window-vscroll nil 0)))))
+ (image-scroll-down nil)))))
(defun doc-view-scroll-down-or-previous-page ()
"Scroll page down if possible, else goto previous page."
;;;; Utility Functions
(defun doc-view-kill-proc ()
- "Kill the current converter process."
+ "Kill the current converter process(es)."
(interactive)
- (when doc-view-current-converter-process
+ (while doc-view-current-converter-processes
(ignore-errors ;; Maybe it's dead already?
- (kill-process doc-view-current-converter-process))
- (setq doc-view-current-converter-process nil))
+ (kill-process (pop doc-view-current-converter-processes))))
(when doc-view-current-timer
(cancel-timer doc-view-current-timer)
(setq doc-view-current-timer nil))
"-"
(let ((file doc-view-buffer-file-name))
(with-temp-buffer
+ (set-buffer-multibyte nil)
(insert-file-contents-literally file)
(md5 (current-buffer)))))
doc-view-cache-directory)))))
(cond
((eq type 'dvi)
(and (doc-view-mode-p 'pdf)
- doc-view-dvipdfm-program
- (executable-find doc-view-dvipdfm-program)))
+ (or (and doc-view-dvipdf-program
+ (executable-find doc-view-dvipdf-program))
+ (and doc-view-dvipdfm-program
+ (executable-find doc-view-dvipdfm-program)))))
((or (eq type 'postscript) (eq type 'ps) (eq type 'eps)
(eq type 'pdf))
(and doc-view-ghostscript-program
(dired-delete-file (doc-view-current-cache-dir) 'always))
(doc-view-initiate-display))
-(defun doc-view-dvi->pdf-sentinel (proc event)
- "If DVI->PDF conversion was successful, convert the PDF to PNG now."
- (if (not (string-match "finished" event))
- (message "DocView: dvi->pdf process changed status to %s." event)
- (with-current-buffer (process-get proc 'buffer)
- (let ((callback (process-get proc 'callback))
- (cb-args (process-get proc 'cb-args)))
- (setq doc-view-current-converter-process nil
- mode-line-process nil)
- (apply callback cb-args)))))
-
-(defun doc-view-dvi->pdf (dvi pdf callback &rest cb-args)
- "Convert DVI to PDF asynchronously and call CALLBACK with CB-ARGS when finished."
- (setq doc-view-current-converter-process
- (start-process "dvi->pdf" doc-view-conversion-buffer
- doc-view-dvipdfm-program
- "-o" pdf dvi)
- mode-line-process (list (format ":%s" doc-view-current-converter-process)))
- (set-process-sentinel doc-view-current-converter-process
- 'doc-view-dvi->pdf-sentinel)
- (process-put doc-view-current-converter-process 'buffer (current-buffer))
- (process-put doc-view-current-converter-process 'callback callback)
- (process-put doc-view-current-converter-process 'cb-args cb-args))
-
-(defun doc-view-pdf/ps->png-sentinel (proc event)
- "If PDF/PS->PNG conversion was successful, update the display."
+(defun doc-view-sentinel (proc event)
+ "Generic sentinel for doc-view conversion processes."
(if (not (string-match "finished" event))
- (message "DocView: converter process changed status to %s." event)
- ;; FIXME: kill the process if we kill the buffer?
+ (message "DocView: process %s changed status to %s."
+ (process-name proc) event)
(when (buffer-live-p (process-get proc 'buffer))
(with-current-buffer (process-get proc 'buffer)
- (setq doc-view-current-converter-process nil
- mode-line-process nil)
- (when doc-view-current-timer
- (cancel-timer doc-view-current-timer)
- (setq doc-view-current-timer nil))
- ;; Yippie, finished. Update the display!
- (doc-view-display (current-buffer) 'force)))))
+ (setq doc-view-current-converter-processes
+ (delq proc doc-view-current-converter-processes))
+ (setq mode-line-process
+ (if doc-view-current-converter-processes
+ (format ":%s" (car doc-view-current-converter-processes))))
+ (funcall (process-get proc 'callback))))))
+
+(defun doc-view-start-process (name program args callback)
+ ;; Make sure the process is started in an existing directory, (rather than
+ ;; some file-name-handler-managed dir, for example).
+ (let* ((default-directory (if (file-readable-p default-directory)
+ default-directory
+ (expand-file-name "~/")))
+ (proc (apply 'start-process name doc-view-conversion-buffer
+ program args)))
+ (push proc doc-view-current-converter-processes)
+ (setq mode-line-process (list (format ":%s" proc)))
+ (set-process-sentinel proc 'doc-view-sentinel)
+ (process-put proc 'buffer (current-buffer))
+ (process-put proc 'callback callback)))
+
+(defun doc-view-dvi->pdf (dvi pdf callback)
+ "Convert DVI to PDF asynchronously and call CALLBACK when finished."
+ ;; Prefer dvipdf over dvipdfm, because the latter has problems if the DVI
+ ;; references and includes other PS files.
+ (if (and doc-view-dvipdf-program
+ (executable-find doc-view-dvipdf-program))
+ (doc-view-start-process "dvi->pdf" doc-view-dvipdf-program
+ (list dvi pdf)
+ callback)
+ (doc-view-start-process "dvi->pdf" doc-view-dvipdfm-program
+ (list "-o" pdf dvi)
+ callback)))
+
(defun doc-view-pdf/ps->png (pdf-ps png)
"Convert PDF-PS to PNG asynchronously."
- (setq doc-view-current-converter-process
- ;; Make sure the process is started in an existing directory,
- ;; (rather than some file-name-handler-managed dir, for example).
- (let ((default-directory (file-name-directory pdf-ps)))
- (apply 'start-process
- (append (list "pdf/ps->png" doc-view-conversion-buffer
- doc-view-ghostscript-program)
- doc-view-ghostscript-options
- (list (format "-r%d" (round doc-view-resolution)))
- (list (concat "-sOutputFile=" png))
- (list pdf-ps))))
- mode-line-process (list (format ":%s" doc-view-current-converter-process)))
- (process-put doc-view-current-converter-process
- 'buffer (current-buffer))
- (set-process-sentinel doc-view-current-converter-process
- 'doc-view-pdf/ps->png-sentinel)
+ (doc-view-start-process
+ "pdf/ps->png" doc-view-ghostscript-program
+ (append doc-view-ghostscript-options
+ (list (format "-r%d" (round doc-view-resolution))
+ (concat "-sOutputFile=" png)
+ pdf-ps))
+ (lambda ()
+ (when doc-view-current-timer
+ (cancel-timer doc-view-current-timer)
+ (setq doc-view-current-timer nil))
+ (doc-view-display (current-buffer) 'force)))
+ ;; Update the displayed pages as soon as they're done generating.
(when doc-view-conversion-refresh-interval
(setq doc-view-current-timer
- (run-at-time "1 secs" doc-view-conversion-refresh-interval
- 'doc-view-display
- (current-buffer)))))
-
-(defun doc-view-pdf->txt-sentinel (proc event)
- (if (not (string-match "finished" event))
- (message "DocView: converter process changed status to %s." event)
- (let ((current-buffer (current-buffer))
- (proc-buffer (process-get proc 'buffer)))
- (with-current-buffer proc-buffer
- (let ((callback (process-get doc-view-current-converter-process 'callback))
- (cb-args (process-get doc-view-current-converter-process 'cb-args)))
- (setq doc-view-current-converter-process nil
- mode-line-process nil)
- ;; If the user looks at the DocView buffer where the conversion was
- ;; performed, call callback.
- (when (eq current-buffer proc-buffer)
- (apply callback cb-args)))))))
-
-(defun doc-view-pdf->txt (pdf txt callback &rest cb-args)
- "Convert PDF to TXT asynchronously and call CALLBACK with CB-ARGS when finished."
- (setq doc-view-current-converter-process
- (start-process "pdf->txt" doc-view-conversion-buffer
- doc-view-pdftotext-program "-raw"
- pdf txt)
- mode-line-process (list (format ":%s" doc-view-current-converter-process)))
- (set-process-sentinel doc-view-current-converter-process
- 'doc-view-pdf->txt-sentinel)
- (process-put doc-view-current-converter-process 'buffer (current-buffer))
- (process-put doc-view-current-converter-process 'callback callback)
- (process-put doc-view-current-converter-process 'cb-args cb-args))
-
-(defun doc-view-doc->txt (callback &rest cb-args)
- "Convert the current document to text and call CALLBACK with CB-ARGS when done."
- (make-directory (doc-view-current-cache-dir))
- (let ((ext (file-name-extension doc-view-buffer-file-name)))
- (cond
- ((string= ext "pdf")
- ;; Doc is a PDF, so convert it to TXT
- (if cb-args
- (doc-view-pdf->txt doc-view-buffer-file-name txt callback cb-args)
- (doc-view-pdf->txt doc-view-buffer-file-name txt callback)))
- ((string= ext "ps")
- ;; Doc is a PS, so convert it to PDF (which will be converted to
- ;; TXT thereafter).
- (let ((pdf (expand-file-name "doc.pdf"
- (doc-view-current-cache-dir))))
- (if cb-args
- (doc-view-ps->pdf doc-view-buffer-file-name pdf
- 'doc-view-pdf->txt
- pdf txt callback cb-args)
- (doc-view-ps->pdf doc-view-buffer-file-name pdf
- 'doc-view-pdf->txt
- pdf txt callback))))
- ((string= ext "dvi")
- ;; Doc is a DVI. This means that a doc.pdf already exists in its
- ;; cache subdirectory.
- (if cb-args
- (doc-view-pdf->txt (expand-file-name "doc.pdf"
- (doc-view-current-cache-dir))
- txt callback cb-args)
- (doc-view-pdf->txt (expand-file-name "doc.pdf"
- (doc-view-current-cache-dir))
- txt callback)))
- (t (error "DocView doesn't know what to do")))))
-
-(defun doc-view-ps->pdf-sentinel (proc event)
- (if (not (string-match "finished" event))
- (message "DocView: converter process changed status to %s." event)
- (with-current-buffer (process-get proc 'buffer)
- (setq doc-view-current-converter-process nil
- mode-line-process nil)
- (apply (process-get proc 'callback) (process-get proc 'cb-args)))))
-
-(defun doc-view-ps->pdf (ps pdf callback &rest cb-args)
- "Convert PS to PDF asynchronously and call CALLBACK with CB-ARGS when finished."
- (setq doc-view-current-converter-process
- (start-process "ps->pdf" doc-view-conversion-buffer
- doc-view-ps2pdf-program
- ;; Avoid security problems when rendering files from
- ;; untrusted sources.
- "-dSAFER"
- ;; in-file and out-file
- ps pdf)
- mode-line-process (list (format ":%s" doc-view-current-converter-process)))
- (set-process-sentinel doc-view-current-converter-process
- 'doc-view-ps->pdf-sentinel)
- (process-put doc-view-current-converter-process 'buffer (current-buffer))
- (process-put doc-view-current-converter-process 'callback callback)
- (process-put doc-view-current-converter-process 'cb-args cb-args))
+ (run-at-time "1 secs" doc-view-conversion-refresh-interval
+ 'doc-view-display
+ (current-buffer)))))
+
+(defun doc-view-pdf->png-1 (pdf png page callback)
+ "Convert a PAGE of a PDF file to PNG asynchronously.
+Call CALLBACK with no arguments when done."
+ (doc-view-start-process
+ "pdf->png-1" doc-view-ghostscript-program
+ (append doc-view-ghostscript-options
+ (list (format "-r%d" (round doc-view-resolution))
+ ;; Sadly, `gs' only supports the page-range
+ ;; for PDF files.
+ (format "-dFirstPage=%d" page)
+ (format "-dLastPage=%d" page)
+ (concat "-sOutputFile=" png)
+ pdf))
+ callback))
+
+(defun doc-view-pdf->png (pdf png pages)
+ "Convert a PDF file to PNG asynchronously.
+Start by converting PAGES, and then the rest."
+ (if (null pages)
+ (doc-view-pdf/ps->png pdf png)
+ ;; We could render several `pages' with a single process if they're
+ ;; (almost) consecutive, but since in 99% of the cases, there'll be only
+ ;; a single page anyway, and of the remaining 1%, few cases will have
+ ;; consecutive pages, it's not worth the trouble.
+ (lexical-let ((pdf pdf) (png png) (rest (cdr pages)))
+ (doc-view-pdf->png-1
+ pdf (format png (car pages)) (car pages)
+ (lambda ()
+ (if rest
+ (doc-view-pdf->png pdf png rest)
+ ;; Yippie, the important pages are done, update the display.
+ (clear-image-cache)
+ ;; Convert the rest of the pages.
+ (doc-view-pdf/ps->png pdf png)))))))
+
+(defun doc-view-pdf->txt (pdf txt callback)
+ "Convert PDF to TXT asynchronously and call CALLBACK when finished."
+ (doc-view-start-process "pdf->txt" doc-view-pdftotext-program
+ (list "-raw" pdf txt)
+ callback))
+
+(defun doc-view-doc->txt (txt callback)
+ "Convert the current document to text and call CALLBACK when done."
+ (make-directory (doc-view-current-cache-dir) t)
+ (case doc-view-doc-type
+ (pdf
+ ;; Doc is a PDF, so convert it to TXT
+ (doc-view-pdf->txt doc-view-buffer-file-name txt callback))
+ (ps
+ ;; Doc is a PS, so convert it to PDF (which will be converted to
+ ;; TXT thereafter).
+ (lexical-let ((pdf (expand-file-name "doc.pdf"
+ (doc-view-current-cache-dir)))
+ (txt txt)
+ (callback callback))
+ (doc-view-ps->pdf doc-view-buffer-file-name pdf
+ (lambda () (doc-view-pdf->txt pdf txt callback)))))
+ (dvi
+ ;; Doc is a DVI. This means that a doc.pdf already exists in its
+ ;; cache subdirectory.
+ (doc-view-pdf->txt (expand-file-name "doc.pdf"
+ (doc-view-current-cache-dir))
+ txt callback))
+ (t (error "DocView doesn't know what to do"))))
+
+(defun doc-view-ps->pdf (ps pdf callback)
+ "Convert PS to PDF asynchronously and call CALLBACK when finished."
+ (doc-view-start-process "ps->pdf" doc-view-ps2pdf-program
+ (list
+ ;; Avoid security problems when rendering files from
+ ;; untrusted sources.
+ "-dSAFER"
+ ;; in-file and out-file
+ ps pdf)
+ callback))
+
+(defun doc-view-active-pages ()
+ (let ((pages ()))
+ (dolist (win (get-buffer-window-list (current-buffer) nil 'visible))
+ (let ((page (image-mode-window-get 'page win)))
+ (unless (memq page pages) (push page pages))))
+ pages))
(defun doc-view-convert-current-doc ()
"Convert `doc-view-buffer-file-name' to a set of png files, one file per page.
(setq doc-view-pending-cache-flush t)
(let ((png-file (expand-file-name "page-%d.png"
(doc-view-current-cache-dir))))
- (make-directory (doc-view-current-cache-dir))
- (if (not (string= (file-name-extension doc-view-buffer-file-name) "dvi"))
- ;; Convert to PNG images.
- (doc-view-pdf/ps->png doc-view-buffer-file-name png-file)
- ;; DVI files have to be converted to PDF before Ghostscript can process
- ;; it.
- (let ((pdf (expand-file-name "doc.pdf" doc-view-current-cache-dir)))
- (doc-view-dvi->pdf doc-view-buffer-file-name
- pdf 'doc-view-pdf/ps->png pdf png-file)))))
+ (make-directory (doc-view-current-cache-dir) t)
+ (case doc-view-doc-type
+ (dvi
+ ;; DVI files have to be converted to PDF before Ghostscript can process
+ ;; it.
+ (lexical-let
+ ((pdf (expand-file-name "doc.pdf" doc-view-current-cache-dir))
+ (png-file png-file))
+ (doc-view-dvi->pdf doc-view-buffer-file-name pdf
+ (lambda () (doc-view-pdf/ps->png pdf png-file)))))
+ (pdf
+ (let ((pages (doc-view-active-pages)))
+ ;; Convert PDF to PNG images starting with the active pages.
+ (doc-view-pdf->png doc-view-buffer-file-name png-file pages)))
+ (t
+ ;; Convert to PNG images.
+ (doc-view-pdf/ps->png doc-view-buffer-file-name png-file)))))
;;;; Slicing
(list (cons 'slice slice) image)
image))
;; We're trying to display a page that doesn't exist.
- (doc-view-current-converter-process
+ (doc-view-current-converter-processes
;; Maybe the page doesn't exist *yet*.
"Cannot display this page (yet)!")
(t
(sort (directory-files (doc-view-current-cache-dir) t
"page-[0-9]+\\.png" t)
'doc-view-sort))
- (dolist (win (get-buffer-window-list buffer nil t))
- (let* ((page (doc-view-current-page win))
- (pagefile (expand-file-name (format "page-%d.png" page)
- (doc-view-current-cache-dir))))
- (when (or force
- (and (not (member pagefile prev-pages))
- (member pagefile doc-view-current-files)))
- (with-selected-window win
- (assert (eq (current-buffer) buffer))
- (doc-view-goto-page page))))))))
+ (dolist (win (or (get-buffer-window-list buffer nil t)
+ (list (selected-window))))
+ (let* ((page (doc-view-current-page win))
+ (pagefile (expand-file-name (format "page-%d.png" page)
+ (doc-view-current-cache-dir))))
+ (when (or force
+ (and (not (member pagefile prev-pages))
+ (member pagefile doc-view-current-files)))
+ (with-selected-window win
+ (assert (eq (current-buffer) buffer))
+ (doc-view-goto-page page))))))))
(defun doc-view-buffer-message ()
;; Only show this message initially, not when refreshing the buffer (in which
(defun doc-view-open-text ()
"Open a buffer with the current doc's contents as text."
(interactive)
- (if doc-view-current-converter-process
+ (if doc-view-current-converter-processes
(message "DocView: please wait till conversion finished.")
(let ((txt (expand-file-name "doc.txt" (doc-view-current-cache-dir))))
(if (file-readable-p txt)
(find-file txt)
- (doc-view-doc->txt 'doc-view-open-text)))))
+ (doc-view-doc->txt txt 'doc-view-open-text)))))
;;;;; Toggle between editing and viewing
(doc-view-search-no-of-matches
doc-view-current-search-matches)))
;; We must convert to TXT first!
- (if doc-view-current-converter-process
+ (if doc-view-current-converter-processes
(message "DocView: please wait till conversion finished.")
- (doc-view-doc->txt 'doc-view-search nil))))))
+ (doc-view-doc->txt txt (lambda () (doc-view-search nil))))))))
(defun doc-view-search-next-match (arg)
"Go to the ARGth next matching page."
(defun doc-view-already-converted-p ()
"Return non-nil if the current doc was already converted."
(and (file-exists-p (doc-view-current-cache-dir))
- (> 0 (length (directory-files (doc-view-current-cache-dir) nil "\\.png$")))))
+ (> (length (directory-files (doc-view-current-cache-dir) nil "\\.png$")) 0)))
(defun doc-view-initiate-display ()
;; Switch to image display if possible
- (if (doc-view-mode-p (intern (file-name-extension doc-view-buffer-file-name)))
+ (if (doc-view-mode-p doc-view-doc-type)
(progn
(doc-view-buffer-message)
(setf (doc-view-current-page) (or (doc-view-current-page) 1))
(remove-overlays (point-min) (point-max) 'doc-view t)
(if (consp image-mode-winprops-alist) (setq image-mode-winprops-alist nil)))
+(defun doc-view-intersection (l1 l2)
+ (let ((l ()))
+ (dolist (x l1) (if (memq x l2) (push x l)))
+ l))
+
;;;###autoload
(defun doc-view-mode ()
"Major mode in DocView buffers.
(kill-all-local-variables)
(set (make-local-variable 'doc-view-previous-major-mode) prev-major-mode))
+ ;; Figure out the document type.
+ (let ((name-types
+ (when buffer-file-name
+ (cdr (assoc (file-name-extension buffer-file-name)
+ '(("dvi" dvi)
+ ("pdf" pdf)
+ ("epdf" pdf)
+ ("ps" ps)
+ ("eps" ps))))))
+ (content-types
+ (save-excursion
+ (goto-char (point-min))
+ (cond
+ ((looking-at "%!") '(ps))
+ ((looking-at "%PDF") '(pdf))
+ ((looking-at "\367\002") '(dvi))))))
+ (set (make-local-variable 'doc-view-doc-type)
+ (car (or (doc-view-intersection name-types content-types)
+ (when (and name-types content-types)
+ (error "Conflicting types: name says %s but content says %s"
+ name-types content-types))
+ name-types content-types
+ (error "Cannot determine the document type")))))
+
(doc-view-make-safe-dir doc-view-cache-directory)
;; Handle compressed files, remote files, files inside archives
(set (make-local-variable 'doc-view-buffer-file-name)
(when (not (string= doc-view-buffer-file-name buffer-file-name))
(write-region nil nil doc-view-buffer-file-name))
- (make-local-variable 'doc-view-current-files)
- (make-local-variable 'doc-view-current-converter-process)
- (make-local-variable 'doc-view-current-timer)
- (make-local-variable 'doc-view-current-cache-dir)
- (make-local-variable 'doc-view-current-search-matches)
(add-hook 'change-major-mode-hook
- (lambda () (remove-overlays (point-min) (point-max) 'doc-view t))
+ (lambda ()
+ (doc-view-kill-proc)
+ (remove-overlays (point-min) (point-max) 'doc-view t))
nil t)
(add-hook 'clone-indirect-buffer-hook 'doc-view-clone-buffer-hook nil t)
+ (add-hook 'kill-buffer 'doc-view-kill-proc nil t)
(remove-overlays (point-min) (point-max) 'doc-view t) ;Just in case.
;; Keep track of display info ([vh]scroll, page number, overlay, ...)
HCoop / bpt / emacs.git / blobdiff