;;; doc-view.el --- View PDF/PostScript/DVI files in Emacs
-;; Copyright (C) 2007, 2008, 2009 Free Software Foundation, Inc.
+;; Copyright (C) 2007, 2008, 2009, 2010 Free Software Foundation, Inc.
;;
;; Author: Tassilo Horn <tassilo@member.fsf.org>
;; Maintainer: Tassilo Horn <tassilo@member.fsf.org>
:link '(function-link doc-view)
:version "22.2"
:group 'applications
+ :group 'data
:group 'multimedia
:prefix "doc-view-")
(defun doc-view-new-window-function (winprops)
(let ((ol (image-mode-window-get 'overlay winprops)))
+ (when (and ol (not (overlay-buffer ol)))
+ ;; I've seen `ol' be a dead overlay. I do not yet know how this
+ ;; happened, so maybe the bug is elsewhere, but in the mean time,
+ ;; this seems like a safe approach.
+ (setq ol nil))
(if ol
- (setq ol (copy-overlay ol))
+ (progn
+ (assert (eq (overlay-buffer ol) (current-buffer)))
+ (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))
(define-key map (kbd "C-c C-c") 'doc-view-toggle-display)
;; Open a new buffer with doc's text contents
(define-key map (kbd "C-c C-t") 'doc-view-open-text)
- ;; Reconvert the current document
- (define-key map (kbd "g") 'revert-buffer)
- (define-key map (kbd "r") 'revert-buffer)
+ ;; Reconvert the current document. Don't just use revert-buffer
+ ;; because that resets the scale factor, the page number, ...
+ (define-key map (kbd "g") 'doc-view-revert-buffer)
+ (define-key map (kbd "r") 'doc-view-revert-buffer)
map)
"Keymap used by `doc-view-mode' when displaying a doc as a set of images.")
+(defun doc-view-revert-buffer (&optional ignore-auto noconfirm)
+ "Like `revert-buffer', but preserves the buffer's current modes."
+ ;; FIXME: this should probably be moved to files.el and used for
+ ;; most/all "g" bindings to revert-buffer.
+ (interactive (list (not current-prefix-arg)))
+ (revert-buffer ignore-auto noconfirm 'preserve-modes))
+
+
(easy-menu-define doc-view-menu doc-view-mode-map
"Menu for Doc View mode."
'("DocView"
(defmacro doc-view-current-image () `(image-mode-window-get 'image))
(defmacro doc-view-current-slice () `(image-mode-window-get 'slice))
+(defun doc-view-last-page-number ()
+ (length doc-view-current-files))
+
(defun doc-view-goto-page (page)
"View the page given by PAGE."
(interactive "nPage: ")
- (let ((len (length doc-view-current-files))
+ (let ((len (doc-view-last-page-number))
(hscroll (window-hscroll)))
(if (< page 1)
(setq page 1)
;; 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)))
+ (win (selected-window))
+ (file file))
(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)
+ ;; Make sure we don't infloop.
+ (file-readable-p file)
(with-selected-window win
(doc-view-goto-page page))))))))
(overlay-put (doc-view-current-overlay)
(defun doc-view-last-page ()
"View the last page."
(interactive)
- (doc-view-goto-page (length doc-view-current-files)))
+ (doc-view-goto-page (doc-view-last-page-number)))
(defun doc-view-scroll-up-or-next-page (&optional arg)
"Scroll page up ARG lines if possible, else goto next page.
(defun doc-view-kill-proc ()
"Kill the current converter process(es)."
(interactive)
- (while doc-view-current-converter-processes
+ (while (consp doc-view-current-converter-processes)
(ignore-errors ;; Maybe it's dead already?
(kill-process (pop doc-view-current-converter-processes))))
(when doc-view-current-timer
(doc-view-kill-proc)
;; Clear the old cached files
(when (file-exists-p (doc-view-current-cache-dir))
- (dired-delete-file (doc-view-current-cache-dir) 'always))
+ (delete-directory (doc-view-current-cache-dir) 'recursive))
(doc-view-initiate-display))
(defun doc-view-sentinel (proc event)
(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)))
+ (lexical-let ((resolution doc-view-resolution))
+ (lambda ()
+ ;; Only create the resolution file when it's all done, so it also
+ ;; serves as a witness that the conversion is complete.
+ (write-region (prin1-to-string resolution) nil
+ (expand-file-name "resolution.el"
+ (doc-view-current-cache-dir))
+ nil 'silently)
+ (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
(doc-view-pdf->png pdf png rest)
;; Yippie, the important pages are done, update the display.
(clear-image-cache)
+ ;; For the windows that have a message (like "Welcome to
+ ;; DocView") display property, clearing the image cache is
+ ;; not sufficient.
+ (dolist (win (get-buffer-window-list (current-buffer) nil 'visible))
+ (with-selected-window win
+ (when (stringp (get-char-property (point-min) 'display))
+ (doc-view-goto-page (doc-view-current-page)))))
;; Convert the rest of the pages.
(doc-view-pdf/ps->png pdf png)))))))
;; resets during the redisplay).
(setq doc-view-pending-cache-flush t)
(let ((png-file (expand-file-name "page-%d.png"
- (doc-view-current-cache-dir)))
- (res-file (expand-file-name "resolution.el"
(doc-view-current-cache-dir))))
(make-directory (doc-view-current-cache-dir) t)
- ;; Save the used resolution so that it can be restored when
- ;; reading the cached files.
- (let ((res doc-view-resolution))
- (with-temp-buffer
- (princ res (current-buffer))
- ;; Don't use write-file, so as to avoid prompts for `require-newline',
- ;; or for pre-existing buffers with the same name, ...
- (write-region nil nil res-file nil 'silently)))
(case doc-view-doc-type
(dvi
;; DVI files have to be converted to PDF before Ghostscript can process
(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)))
+ (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)))))
;;;; User interface commands and the mode
-;; (put 'doc-view-mode 'mode-class 'special)
+(put 'doc-view-mode 'mode-class 'special)
(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))
- (> (length (directory-files (doc-view-current-cache-dir) nil "\\.png$")) 0)))
+ ;; Check that the resolution info is there, otherwise it means
+ ;; the conversion is incomplete.
+ (file-readable-p (expand-file-name "resolution.el"
+ (doc-view-current-cache-dir)))
+ (> (length (directory-files (doc-view-current-cache-dir)
+ nil "\\.png\\'"))
+ 0)))
(defun doc-view-initiate-display ()
;; Switch to image display if possible
(progn
(message "DocView: using cached files!")
;; Load the saved resolution
- (let ((res-file (expand-file-name "resolution.el"
- (doc-view-current-cache-dir)))
- (res doc-view-resolution))
- (with-temp-buffer
- (when (file-exists-p res-file)
- (insert-file-contents res-file)
- (setq res (read (current-buffer)))))
- (when (numberp res)
+ (let* ((res-file (expand-file-name "resolution.el"
+ (doc-view-current-cache-dir)))
+ (res
+ (with-temp-buffer
+ (when (file-readable-p res-file)
+ (insert-file-contents res-file)
+ (read (current-buffer))))))
+ (when (numberp res)
(set (make-local-variable 'doc-view-resolution) res)))
(doc-view-display (current-buffer) 'force))
(doc-view-convert-current-doc))
(set (make-local-variable 'mode-line-position)
'(" P" (:eval (number-to-string (doc-view-current-page)))
- "/" (:eval (number-to-string (length doc-view-current-files)))))
+ "/" (:eval (number-to-string (doc-view-last-page-number)))))
;; Don't scroll unless the user specifically asked for it.
(set (make-local-variable 'auto-hscroll-mode) nil)
(set (make-local-variable 'mwheel-scroll-up-function)
;;;; Bookmark integration
-(declare-function bookmark-make-record-default "bookmark"
- (&optional point-only))
+(declare-function bookmark-make-record-default
+ "bookmark" (&optional no-file no-context posn))
(declare-function bookmark-prop-get "bookmark" (bookmark prop))
(declare-function bookmark-default-handler "bookmark" (bmk))
HCoop / bpt / emacs.git / blobdiff