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;;; org-pdfview.el --- Support for links to documents in pdfview mode
;; Copyright (C) 2014 Markus Hauck
;; Author: Markus Hauck <markus1189@gmail.com>
;; Maintainer: Markus Hauck <markus1189@gmail.com>
;; Keywords: org, pdf-view, pdf-tools
;; Version: 0.1
;; Package-Requires: ((org "8.2.10") (pdf-tools "0.80"))
;; This program 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 of the License, or
;; (at your option) any later version.
;;
;; This program is distributed in the hope that it will be useful,
;; but WITHOUT ANY WARRANTY; without even the implied warranty of
;; MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
;; GNU General Public License for more details.
;;
;; You should have received a copy of the GNU General Public License
;; along with this program. If not, see <http://www.gnu.org/licenses/>.
;;; Commentary:
;; Add support for org links from pdfview buffers like docview.
;;
;; To enable this automatically, use:
;; (eval-after-load 'org '(require 'org-pdfview))
;; If you want, you can also configure the org-mode default open PDF file function.
;; (add-to-list 'org-file-apps '("\\.pdf\\'" . (lambda (file link) (org-pdfview-open link))))
;;; Code:
(require 'org)
(require 'pdf-tools)
(require 'pdf-view)
(defun org-pdfview-open (link)
"Open LINK in pdf-view-mode."
(cond ((string-match "\\(.*\\)::\\([0-9]*\\)\\+\\+\\([[0-9]\\.*[0-9]*\\)" link)
(let* ((path (match-string 1 link))
(page (string-to-number (match-string 2 link)))
(height (string-to-number (match-string 3 link))))
(org-open-file path 1)
(pdf-view-goto-page page)
(image-set-window-vscroll
(round (/ (* height (cdr (pdf-view-image-size))) (frame-char-height))))))
((string-match "\\(.*\\)::\\([0-9]+\\)$" link)
(let* ((path (match-string 1 link))
(page (string-to-number (match-string 2 link))))
(org-open-file path 1)
(pdf-view-goto-page page)))
(t
(org-open-file link 1))))
(defun org-pdfview-store-link ()
"Store a link to a pdfview buffer."
(when (eq major-mode 'pdf-view-mode)
;; This buffer is in pdf-view-mode
(let* ((path buffer-file-name)
(page (pdf-view-current-page))
(link (concat "pdfview:" path "::" (number-to-string page))))
(org-store-link-props
:type "pdfview"
:link link
:description path))))
(defun org-pdfview-export (link description format)
"Export the pdfview LINK with DESCRIPTION for FORMAT from Org files."
(let* ((path (when (string-match "\\(.+\\)::.+" link)
(match-string 1 link)))
(desc (or description link)))
(when (stringp path)
(setq path (org-link-escape (expand-file-name path)))
(cond
((eq format 'html) (format "<a href=\"%s\">%s</a>" path desc))
((eq format 'latex) (format "\\href{%s}{%s}" path desc))
((eq format 'ascii) (format "%s (%s)" desc path))
(t path)))))
(defun org-pdfview-complete-link (&optional arg)
"Use the existing file name completion for file.
Links to get the file name, then ask the user for the page number
and append it."
(concat (replace-regexp-in-string "^file:" "pdfview:"
(org-file-complete-link arg))
"::"
(read-from-minibuffer "Page:" "1")))
(org-link-set-parameters "pdfview"
:follow #'org-pdfview-open
:complete #'org-pdfview-complete-link
:store #'org-pdfview-store-link)
(provide 'jao-org-pdfview)
;;; jao-org-pdfview.el ends here
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