+++ /dev/null
-;;; ox-reveal.el --- reveal.js Presentation Back-End for Org Export Engine
-
-;; Copyright (C) 2013 Yujie Wen
-
-;; Author: Yujie Wen <yjwen.ty at gmail dot com>
-;; Created: 2013-04-27
-;; Version: 1.0
-;; Package-Version: 20161027.926
-;; Package-Requires: ((org "20150330"))
-;; Keywords: outlines, hypermedia, slideshow, presentation
-
-;; This file is not part of GNU Emacs.
-
-;;; Copyright Notice:
-
-;; 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 GNU Emacs. If not, see <http://www.gnu.org/licenses/>.
-
-;; Please see "Readme.org" for detail introductions.
-
-;; Pull request: Multiplex Support - Stephen Barrett <Stephen dot Barrewtt at scss dot tcd dot ie
-
-;;; Code:
-
-(require 'ox-html)
-(require 'cl)
-
-(org-export-define-derived-backend 'reveal 'html
-
- :menu-entry
- '(?R "Export to reveal.js HTML Presentation"
- ((?R "To file" org-reveal-export-to-html)
- (?B "To file and browse" org-reveal-export-to-html-and-browse)
- (?S "Current subtree to file" org-reveal-export-current-subtree)))
-
- :options-alist
- '((:reveal-control nil "reveal_control" org-reveal-control t)
- (:reveal-progress nil "reveal_progress" org-reveal-progress t)
- (:reveal-history nil "reveal_history" org-reveal-history t)
- (:reveal-center nil "reveal_center" org-reveal-center t)
- (:reveal-rolling-links nil "reveal_rolling_links" org-reveal-rolling-links t)
- (:reveal-slide-number nil "reveal_slide_number" org-reveal-slide-number t)
- (:reveal-keyboard nil "reveal_keyboard" org-reveal-keyboard t)
- (:reveal-overview nil "reveal_overview" org-reveal-overview t)
- (:reveal-width nil "reveal_width" org-reveal-width t)
- (:reveal-height nil "reveal_height" org-reveal-height)
- (:reveal-margin "REVEAL_MARGIN" nil org-reveal-margin t)
- (:reveal-min-scale "REVEAL_MIN_SCALE" nil org-reveal-min-scale t)
- (:reveal-max-scale "REVEAL_MAX_SCALE" nil org-reveal-max-scale t)
- (:reveal-root "REVEAL_ROOT" nil org-reveal-root t)
- (:reveal-trans "REVEAL_TRANS" nil org-reveal-transition t)
- (:reveal-speed "REVEAL_SPEED" nil org-reveal-transition-speed t)
- (:reveal-theme "REVEAL_THEME" nil org-reveal-theme t)
- (:reveal-extra-css "REVEAL_EXTRA_CSS" nil org-reveal-extra-css newline)
- (:reveal-extra-js "REVEAL_EXTRA_JS" nil org-reveal-extra-js nil)
- (:reveal-hlevel "REVEAL_HLEVEL" nil nil t)
- (:reveal-title-slide nil "reveal_title_slide" org-reveal-title-slide t)
- (:reveal-title-slide-background "REVEAL_TITLE_SLIDE_BACKGROUND" nil nil t)
- (:reveal-title-slide-background-size "REVEAL_TITLE_SLIDE_BACKGROUND_SIZE" nil nil t)
- (:reveal-title-slide-background-position "REVEAL_TITLE_SLIDE_BACKGROUND_POSITION" nil nil t)
- (:reveal-title-slide-background-repeat "REVEAL_TITLE_SLIDE_BACKGROUND_REPEAT" nil nil t)
- (:reveal-title-slide-background-transition "REVEAL_TITLE_SLIDE_BACKGROUND_TRANSITION" nil nil t)
- (:reveal-default-slide-background "REVEAL_DEFAULT_SLIDE_BACKGROUND" nil nil t)
- (:reveal-default-slide-background-size "REVEAL_DEFAULT_SLIDE_BACKGROUND_SIZE" nil nil t)
- (:reveal-default-slide-background-position "REVEAL_DEFAULT_SLIDE_BACKGROUND_POSITION" nil nil t)
- (:reveal-default-slide-background-repeat "REVEAL_DEFAULT_SLIDE_BACKGROUND_REPEAT" nil nil t)
- (:reveal-default-slide-background-transition "REVEAL_DEFAULT_SLIDE_BACKGROUND_TRANSITION" nil nil t)
- (:reveal-mathjax-url "REVEAL_MATHJAX_URL" nil org-reveal-mathjax-url t)
- (:reveal-preamble "REVEAL_PREAMBLE" nil org-reveal-preamble t)
- (:reveal-head-preamble "REVEAL_HEAD_PREAMBLE" nil org-reveal-head-preamble newline)
- (:reveal-postamble "REVEAL_POSTAMBLE" nil org-reveal-postamble t)
- (:reveal-multiplex-id "REVEAL_MULTIPLEX_ID" nil org-reveal-multiplex-id nil)
- (:reveal-multiplex-secret "REVEAL_MULTIPLEX_SECRET" nil org-reveal-multiplex-secret nil)
- (:reveal-multiplex-url "REVEAL_MULTIPLEX_URL" nil org-reveal-multiplex-url nil)
- (:reveal-multiplex-socketio-url "REVEAL_MULTIPLEX_SOCKETIO_URL" nil org-reveal-multiplex-socketio-url nil)
- (:reveal-slide-header "REVEAL_SLIDE_HEADER" nil org-reveal-slide-header t)
- (:reveal-slide-footer "REVEAL_SLIDE_FOOTER" nil org-reveal-slide-footer t)
- (:reveal-plugins "REVEAL_PLUGINS" nil nil t)
- (:reveal-default-frag-style "REVEAL_DEFAULT_FRAG_STYLE" nil org-reveal-default-frag-style t)
- (:reveal-single-file nil "reveal_single_file" org-reveal-single-file t)
- (:reveal-init-script "REVEAL_INIT_SCRIPT" nil org-reveal-init-script space)
- (:reveal-highlight-css "REVEAL_HIGHLIGHT_CSS" nil org-reveal-highlight-css nil)
- )
-
- :translate-alist
- '((headline . org-reveal-headline)
- (inner-template . org-reveal-inner-template)
- (item . org-reveal-item)
- (keyword . org-reveal-keyword)
- (link . org-reveal-link)
- (latex-environment . org-reveal-latex-environment)
- (latex-fragment . (lambda (frag contents info)
- (setq info (plist-put info :reveal-mathjax t))
- (org-html-latex-fragment frag contents info)))
- (plain-list . org-reveal-plain-list)
- (quote-block . org-reveal-quote-block)
- (section . org-reveal-section)
- (src-block . org-reveal-src-block)
- (special-block . org-reveal-special-block)
- (template . org-reveal-template))
-
- :filters-alist '((:filter-parse-tree . org-reveal-filter-parse-tree))
- )
-
-(defcustom org-reveal-root "./reveal.js"
- "The root directory of reveal.js packages. It is the directory
- within which js/reveal.js is."
- :group 'org-export-reveal)
-
-(defcustom org-reveal-hlevel 1
- "The minimum level of headings that should be grouped into
-vertical slides."
- :group 'org-export-reveal
- :type 'integer)
-
-(defun org-reveal--get-hlevel (info)
- "Get HLevel value safely.
-If option \"REVEAL_HLEVEL\" is set, retrieve integer value from it,
-else get value from custom variable `org-reveal-hlevel'."
- (let ((hlevel-str (plist-get info :reveal-hlevel)))
- (if hlevel-str (string-to-number hlevel-str)
- org-reveal-hlevel)))
-
-(defcustom org-reveal-title-slide 'auto
- "Non-nil means insert a title slide.
-
-When set to `auto', an automatic title slide is generated. When
-set to a string, use this string as a format string for title
-slide, where the following escaping elements are allowed:
-
- %s stands for the title
- %a stands for the author's name.
- %e stands for the author's email.
- %d stands for the date.
- %% stands for a literal %."
- :group 'org-export-reveal
- :type '(choice (const :tag "No title slide" nil)
- (const :tag "Auto title slide" 'auto)
- (string :tag "Custom title slide")))
-
-(defcustom org-reveal-transition
- "default"
- "Reveal transistion style."
- :group 'org-export-reveal
- :type 'string)
-
-(defcustom org-reveal-transition-speed
- "default"
- "Reveal transistion speed."
- :group 'org-export-reveal
- :type 'string)
-
-(defcustom org-reveal-theme
- "moon"
- "Reveal theme."
- :group 'org-export-reveal
- :type 'string)
-
-(defcustom org-reveal-extra-js
- ""
- "URL to extra JS file."
- :group 'org-export-reveal
- :type 'string)
-
-(defcustom org-reveal-extra-css
- ""
- "URL to extra css file."
- :group 'org-export-reveal
- :type 'string)
-
-
-(defcustom org-reveal-multiplex-id ""
- "The ID to use for multiplexing."
- :group 'org-export-reveal
- :type 'string)
-
-(defcustom org-reveal-multiplex-secret ""
- "The secret to use for master slide."
- :group 'org-export-reveal
- :type 'string)
-
-(defcustom org-reveal-multiplex-url ""
- "The url of the socketio server."
- :group 'org-export-reveal
- :type 'string)
-
-(defcustom org-reveal-multiplex-socketio-url
- ""
- "the url of the socketio.js library"
- :group 'org-export-reveal
- :type 'string)
-
-(defcustom org-reveal-control t
- "Reveal control applet."
- :group 'org-export-reveal
- :type 'string)
-
-(defcustom org-reveal-progress t
- "Reveal progress applet."
- :group 'org-export-reveal
- :type 'boolean)
-
-(defcustom org-reveal-history nil
- "Reveal history applet."
- :group 'org-export-reveal
- :type 'boolean)
-
-(defcustom org-reveal-center t
- "Reveal center applet."
- :group 'org-export-reveal
- :type 'boolean)
-
-(defcustom org-reveal-rolling-links nil
- "Reveal use rolling links."
- :group 'org-export-reveal
- :type 'boolean)
-
-(defcustom org-reveal-slide-number "c"
- "Reveal showing slide numbers."
- :group 'org-export-reveal
- :type 'string)
-
-(defcustom org-reveal-keyboard t
- "Reveal use keyboard navigation."
- :group 'org-export-reveal
- :type 'boolean)
-
-(defcustom org-reveal-overview t
- "Reveal show overview."
- :group 'org-export-reveal
- :type 'boolean)
-
-(defcustom org-reveal-width -1
- "Slide width"
- :group 'org-export-reveal
- :type 'integer)
-
-(defcustom org-reveal-height -1
- "Slide height"
- :group 'org-export-reveal
- :type 'integer)
-
-(defcustom org-reveal-margin "-1"
- "Slide margin"
- :group 'org-export-reveal
- :type 'string)
-
-(defcustom org-reveal-min-scale "-1"
- "Minimum bound for scaling slide."
- :group 'org-export-reveal
- :type 'string)
-
-(defcustom org-reveal-max-scale "-1"
- "Maximum bound for scaling slide."
- :group 'org-export-reveal
- :type 'string)
-
-(defcustom org-reveal-mathjax nil
- "Obsolete. Org-reveal enable mathjax when it find latex
-content."
- :group 'org-export-reveal
- :type 'boolean)
-
-(defcustom org-reveal-mathjax-url
- "https://cdn.mathjax.org/mathjax/latest/MathJax.js?config=TeX-AMS-MML_HTMLorMML"
- "Default MathJax URL."
- :group 'org-export-reveal
- :type 'string)
-
-(defcustom org-reveal-preamble nil
- "Preamble contents."
- :group 'org-export-reveal
- :type 'string)
-
-(defcustom org-reveal-head-preamble nil
- "Preamble contents for head part."
- :group 'org-export-reveal
- :type 'string)
-
-(defcustom org-reveal-postamble nil
- "Postamble contents."
- :group 'org-export-reveal
- :type 'string)
-
-(defcustom org-reveal-slide-header nil
- "HTML content used as Reveal.js slide header"
- :group 'org-export-reveal
- :type 'string)
-
-(defcustom org-reveal-slide-footer nil
- "HTML content used as Reveal.js slide footer"
- :group 'org-export-reveal
- :type 'string)
-
-(defcustom org-reveal-default-frag-style nil
- "Default fragment style."
- :group 'org-export-reveal
- :type 'string)
-
-(defcustom org-reveal-plugins
- '(classList markdown zoom notes)
- "Default builtin plugins"
- :group 'org-export-reveal
- :type '(set
- (const classList)
- (const markdown)
- (const highlight)
- (const zoom)
- (const notes)
- (const search)
- (const remotes)
- (const multiplex)))
-
-(defcustom org-reveal-single-file nil
- "Export presentation into one single HTML file, which embedded
- JS scripts and pictures."
- :group 'org-export-reveal
- :type 'boolean)
-
-(defcustom org-reveal-init-script nil
- "Custom script that will be passed to Reveal.initialize."
- :group 'org-export-reveal
- :type 'string)
-
-(defcustom org-reveal-highlight-css "%r/lib/css/zenburn.css"
- "Hightlight.js CSS file."
- :group 'org-export-reveal
- :type 'string)
-
-(defcustom org-reveal-note-key-char "n"
- "If not nil, org-reveal-note-key-char's value is registered as
- the key character to Org-mode's structure completion for
- Reveal.js notes. When `<' followed by the key character are
- typed and then the completion key is pressed, which is usually
- `TAB', \"#+BEGIN_NOTES\" and \"#+END_NOTES\" is inserted.
-
- The default value is \"n\". Set the variable to nil to disable
- registering the completion"
- :group 'org-export-reveal
- :type 'string)
-
-(defvar org-reveal--last-slide-section-tag ""
- "Variable to cache the section tag from the last slide. ")
-
-(defun if-format (fmt val)
- (if val (format fmt val) ""))
-
-(defun frag-style (frag info)
- "Return proper fragment string according to FRAG and the default fragment style.
-FRAG is the fragment style set on element, INFO is a plist
-holding contextual information."
- (cond
- ((string= frag t)
- (let ((default-frag-style (plist-get info :reveal-default-frag-style)))
- (if default-frag-style (format "fragment %s" default-frag-style)
- "fragment")))
- (t (format "fragment %s" frag))))
-
-(defun frag-class (frag info)
- "Return proper HTML string description of fragment style.
-FRAG is the fragment style set on element, INFO is a plist
-holding contextual information."
- (and frag
- (format " class=\"%s\"" (frag-style frag info))))
-
-(defun org-reveal-special-block (special-block contents info)
- "Transcode a SPECIAL-BLOCK element from Org to Reveal.
-CONTENTS holds the contents of the block. INFO is a plist
-holding contextual information.
-
-If the block type is 'NOTES', transcode the block into a
-Reveal.js slide note. Otherwise, export the block as by the HTML
-exporter."
- (let ((block-type (org-element-property :type special-block)))
- (if (string= block-type "NOTES")
- (format "<aside class=\"notes\">\n%s\n</aside>\n" contents)
- (org-html-special-block special-block contents info))))
-
-;; Copied from org-html-headline and modified to embed org-reveal
-;; specific attributes.
-(defun org-reveal-headline (headline contents info)
- "Transcode a HEADLINE element from Org to HTML.
-CONTENTS holds the contents of the headline. INFO is a plist
-holding contextual information."
- (unless (org-element-property :footnote-section-p headline)
- (if (org-export-low-level-p headline info)
- ;; This is a deep sub-tree: export it as in ox-html.
- (org-html-headline headline contents info)
- ;; Standard headline. Export it as a slide
- (let* ((level (org-export-get-relative-level headline info))
- (preferred-id (or (org-element-property :CUSTOM_ID headline)
- (org-export-get-reference headline info)
- (org-element-property :ID headline)))
- (hlevel (org-reveal--get-hlevel info))
- (header (plist-get info :reveal-slide-header))
- (header-div (when header (format "<div class=\"slide-header\">%s</div>\n" header)))
- (footer (plist-get info :reveal-slide-footer))
- (footer-div (when footer (format "<div class=\"slide-footer\">%s</div>\n" footer)))
- (first-sibling (org-export-first-sibling-p headline info))
- (last-sibling (org-export-last-sibling-p headline info))
- (default-slide-background (plist-get info :reveal-default-slide-background))
- (default-slide-background-size (plist-get info :reveal-default-slide-background-size))
- (default-slide-background-position (plist-get info :reveal-default-slide-background-position))
- (default-slide-background-repeat (plist-get info :reveal-default-slide-background-repeat))
- (default-slide-background-transition (plist-get info :reveal-default-slide-background-transition))
- (slide-section-tag (format "<section %s%s>\n"
- (org-html--make-attribute-string
- `(:id ,(format "slide-%s" preferred-id)
- :data-transition ,(org-element-property :REVEAL_DATA_TRANSITION headline)
- :data-state ,(org-element-property :REVEAL_DATA_STATE headline)
- :data-background ,(or (org-element-property :REVEAL_BACKGROUND headline)
- default-slide-background)
- :data-background-size ,(or (org-element-property :REVEAL_BACKGROUND_SIZE headline)
- default-slide-background-size)
- :data-background-position ,(or (org-element-property :REVEAL_BACKGROUND_POSITION headline)
- default-slide-background-position)
- :data-background-repeat ,(or (org-element-property :REVEAL_BACKGROUND_REPEAT headline)
- default-slide-background-repeat)
- :data-background-transition ,(or (org-element-property :REVEAL_BACKGROUND_TRANS headline)
- default-slide-background-transition)))
- (let ((extra-attrs (org-element-property :REVEAL_EXTRA_ATTR headline)))
- (if extra-attrs (format " %s" extra-attrs) ""))))
- (ret (concat
- (if (or (/= level 1) (not first-sibling))
- ;; Not the first heading. Close previou slide.
- (concat
- ;; Slide footer if any
- footer-div
- ;; Close previous slide
- "</section>\n"
- (if (<= level hlevel)
- ;; Close previous vertical slide group.
- "</section>\n")))
- (if (<= level hlevel)
- ;; Add an extra "<section>" to group following slides
- ;; into vertical slide group. Transition override
- ;; attributes are attached at this level, too.
- (let ((attrs
- (org-html--make-attribute-string
- `(:data-transition ,(org-element-property :REVEAL_DATA_TRANSITION headline)))))
- (if (string= attrs "")
- "<section>\n"
- (format "<section %s>\n" attrs))))
- ;; Start a new slide.
- (prog1
- slide-section-tag
- ;; Cache the current slide's section tag, except the id attr
- (setq org-reveal--last-slide-section-tag
- (replace-regexp-in-string "id\\s-*=\\s-*[\][\"].*?[\][\"]"
- "" slide-section-tag)))
- ;; Slide header if any.
- header-div
- ;; The HTML content of the headline
- ;; Strip the <div> tags, if any
- (let ((html (org-html-headline headline contents info)))
- (if (string-prefix-p "<div" html)
- ;; Remove the first <div> and the last </div> tags from html
- (concat "<"
- (mapconcat 'identity
- (butlast (cdr (split-string html "<" t)))
- "<"))
- ;; Return the HTML content unchanged
- html))
- (if (and (= level 1)
- (org-export-last-sibling-p headline info))
- ;; Last head 1. Close all slides.
- (concat
- ;; Slide footer if any
- footer-div
- "</section>\n</section>\n")))))
- ret))))
-
-(defgroup org-export-reveal nil
- "Options for exporting Orgmode files to reveal.js HTML pressentations."
- :tag "Org Export Reveal"
- :group 'org-export)
-
-(defun org-reveal--read-file (file)
- "Return the content of file"
- (with-temp-buffer
- (insert-file-contents-literally file)
- (buffer-string)))
-
-(defun org-reveal--file-url-to-path (url)
- "Convert URL that points to local files to file path."
- (replace-regexp-in-string
- (if (string-equal system-type "windows-nt") "^file:///" "^file://")
- "" url))
-
-(defun org-reveal--css-label (in-single-file file-name style-id)
- "Generate an HTML label for including a CSS file, if
- IN-SINGLE-FILE is t, the content of FILE-NAME is embedded,
- otherwise, a `<link>' label is generated."
- (when (and file-name (not (string= file-name "")))
- (if in-single-file
- ;; Single-file
- (let ((local-file-name (org-reveal--file-url-to-path file-name)))
- (if (file-readable-p local-file-name)
- (concat "<style type=\"text/css\">\n"
- (org-reveal--read-file local-file-name)
- "\n</style>\n")
- ;; But file is not readable.
- (error "Cannot read %s" file-name)))
- ;; Not in-single-file
- (concat "<link rel=\"stylesheet\" href=\"" file-name "\""
- (if style-id (format " id=\"%s\"" style-id))
- "/>\n"))))
-
-(defun org-reveal-stylesheets (info)
- "Return the HTML contents for declaring reveal stylesheets
-using custom variable `org-reveal-root'."
- (let* ((root-path (file-name-as-directory (plist-get info :reveal-root)))
- (reveal-css (concat root-path "css/reveal.css"))
- (theme (plist-get info :reveal-theme))
- (theme-css (concat root-path "css/theme/" theme ".css"))
- (extra-css (plist-get info :reveal-extra-css))
- (in-single-file (plist-get info :reveal-single-file)))
- (concat
- ;; Default embedded style sheets
- "<style type=\"text/css\">
-.underline { text-decoration: underline; }
-</style>
-"
- ;; stylesheets
- (mapconcat (lambda (elem) (org-reveal--css-label in-single-file (car elem) (cdr elem)))
- (append (list (cons reveal-css nil)
- (cons theme-css "theme"))
- (mapcar (lambda (a) (cons a nil))
- (split-string extra-css "\n")))
- "\n")
-
- ;; Include CSS for highlight.js if necessary
- (if (org-reveal--using-highlight.js info)
- (format "<link rel=\"stylesheet\" href=\"%s\"/>"
- (format-spec (plist-get info :reveal-highlight-css)
- `((?r . ,(directory-file-name root-path))))))
- ;; print-pdf
- (if in-single-file ""
- (format "
-<!-- If the query includes 'print-pdf', include the PDF print sheet -->
-<script>
- if( window.location.search.match( /print-pdf/gi ) ) {
- var link = document.createElement( 'link' );
- link.rel = 'stylesheet';
- link.type = 'text/css';
- link.href = '%scss/print/pdf.css';
- document.getElementsByTagName( 'head' )[0].appendChild( link );
- }
-</script>
-"
- root-path)))))
-
-(defun org-reveal-mathjax-scripts (info)
- "Return the HTML contents for declaring MathJax scripts"
- (if (plist-get info :reveal-mathjax)
- ;; MathJax enabled.
- (format "<script type=\"text/javascript\" src=\"%s\"></script>\n"
- (plist-get info :reveal-mathjax-url))))
-
-(defun org-reveal-scripts (info)
- "Return the necessary scripts for initializing reveal.js using
-custom variable `org-reveal-root'."
- (let* ((root-path (file-name-as-directory (plist-get info :reveal-root)))
- (head-min-js (concat root-path "lib/js/head.min.js"))
- (reveal-js (concat root-path "js/reveal.js"))
- ;; Local files
- (local-root-path (org-reveal--file-url-to-path root-path))
- (local-head-min-js (concat local-root-path "lib/js/head.min.js"))
- (local-reveal-js (concat local-root-path "js/reveal.js"))
- (in-single-file (plist-get info :reveal-single-file)))
- (concat
- ;; reveal.js/lib/js/head.min.js
- ;; reveal.js/js/reveal.js
- (if (and in-single-file
- (file-readable-p local-head-min-js)
- (file-readable-p local-reveal-js))
- ;; Embed scripts into HTML
- (concat "<script>\n"
- (org-reveal--read-file local-head-min-js)
- "\n"
- (org-reveal--read-file local-reveal-js)
- "\n</script>")
- ;; Fall-back to extern script links
- (if in-single-file
- ;; Tried to embed scripts but failed. Print a message about possible errors.
- (error (concat "Cannot read "
- (mapconcat 'identity
- (delq nil (mapcar (lambda (file) (if (not (file-readable-p file)) file))
- (list local-head-min-js local-reveal-js)))
- ", "))))
- (concat
- "<script src=\"" head-min-js "\"></script>\n"
- "<script src=\"" reveal-js "\"></script>\n"))
- ;; plugin headings
- "
-<script>
-// Full list of configuration options available here:
-// https://github.com/hakimel/reveal.js#configuration
-Reveal.initialize({
-"
- (format "
-controls: %s,
-progress: %s,
-history: %s,
-center: %s,
-slideNumber: %s,
-rollingLinks: %s,
-keyboard: %s,
-overview: %s,
-"
- (if (plist-get info :reveal-control) "true" "false")
- (if (plist-get info :reveal-progress) "true" "false")
- (if (plist-get info :reveal-history) "true" "false")
- (if (plist-get info :reveal-center) "true" "false")
- (let ((slide-number (plist-get info :reveal-slide-number)))
- (if slide-number (format "'%s'" slide-number)
- "false"))
- (if (plist-get info :reveal-rolling-links) "true" "false")
- (if (plist-get info :reveal-keyboard) "true" "false")
- (if (plist-get info :reveal-overview) "true" "false"))
-
- ;; slide width
- (let ((width (plist-get info :reveal-width)))
- (if (> width 0) (format "width: %d,\n" width) ""))
-
- ;; slide height
- (let ((height (plist-get info :reveal-height)))
- (if (> height 0) (format "height: %d,\n" height) ""))
-
- ;; slide margin
- (let ((margin (string-to-number (plist-get info :reveal-margin))))
- (if (>= margin 0) (format "margin: %.2f,\n" margin) ""))
-
- ;; slide minimum scaling factor
- (let ((min-scale (string-to-number (plist-get info :reveal-min-scale))))
- (if (> min-scale 0) (format "minScale: %.2f,\n" min-scale) ""))
-
- ;; slide maximux scaling factor
- (let ((max-scale (string-to-number (plist-get info :reveal-max-scale))))
- (if (> max-scale 0) (format "maxScale: %.2f,\n" max-scale) ""))
-
- ;; thems and transitions
- (format "
-theme: Reveal.getQueryHash().theme, // available themes are in /css/theme
-transition: Reveal.getQueryHash().transition || '%s', // default/cube/page/concave/zoom/linear/fade/none
-transitionSpeed: '%s',\n"
- (plist-get info :reveal-trans)
- (plist-get info :reveal-speed))
-
- ;; multiplexing - depends on defvar 'client-multiplex'
- (when (plist-get info :reveal-multiplex-id)
- (format
-"multiplex: {
- secret: %s, // null if client
- id: '%s', // id, obtained from socket.io server
- url: '%s' // Location of socket.io server
-},\n"
- (if (eq client-multiplex nil)
- (format "'%s'" (plist-get info :reveal-multiplex-secret))
- (format "null"))
- (plist-get info :reveal-multiplex-id)
- (plist-get info :reveal-multiplex-url)))
-
- ;; optional JS library heading
- (if in-single-file ""
- (concat
- "
-// Optional libraries used to extend on reveal.js
-dependencies: [
-"
- ;; JS libraries
- (let* ((builtins
- '(classList (format " { src: '%slib/js/classList.js', condition: function() { return !document.body.classList; } }" root-path)
- markdown (format " { src: '%splugin/markdown/marked.js', condition: function() { return !!document.querySelector( '[data-markdown]' ); } },
- { src: '%splugin/markdown/markdown.js', condition: function() { return !!document.querySelector( '[data-markdown]' ); } }" root-path root-path)
- highlight (format " { src: '%splugin/highlight/highlight.js', async: true, callback: function() { hljs.initHighlightingOnLoad(); } }" root-path)
- zoom (format " { src: '%splugin/zoom-js/zoom.js', async: true, condition: function() { return !!document.body.classList; } }" root-path)
- notes (format " { src: '%splugin/notes/notes.js', async: true, condition: function() { return !!document.body.classList; } }" root-path)
- search (format " { src: '%splugin/search/search.js', async: true, condition: function() { return !!document.body.classList; } }" root-path)
- remotes (format " { src: '%splugin/remotes/remotes.js', async: true, condition: function() { return !!document.body.classList; } }" root-path)
- multiplex (format " { src: '%s', async: true },\n%s"
- (plist-get info :reveal-multiplex-socketio-url)
- ; following ensures that either client.js or master.js is included depending on defva client-multiplex value state
- (if (not client-multiplex)
- (progn
- (if (plist-get info :reveal-multiplex-secret)
- (setq client-multiplex t))
- (format " { src: '%splugin/multiplex/master.js', async: true }" root-path))
- (format " { src: '%splugin/multiplex/client.js', async: true }" root-path)))))
- (builtin-codes
- (mapcar
- (lambda (p)
- (eval (plist-get builtins p)))
- (let ((buffer-plugins (condition-case e
- (car (read-from-string (plist-get info :reveal-plugins)))
- (end-of-file nil)
- (wrong-type-argument nil))))
- (or (and buffer-plugins (listp buffer-plugins) buffer-plugins)
- org-reveal-plugins))))
- (extra-codes (plist-get info :reveal-extra-js))
- (total-codes
- (if (string= "" extra-codes) builtin-codes
- (append (list extra-codes) builtin-codes))))
- (mapconcat 'identity total-codes ",\n"))
- "]\n"
- ))
- (let ((init-script (plist-get info :reveal-init-script)))
- (if init-script (concat (if in-single-file "" ",") init-script)))
- "});\n</script>\n")))
-
-(defun org-reveal-toc (depth info)
- "Build a slide of table of contents."
- (let ((toc (org-html-toc depth info)))
- (if toc
- (format "<section id=\"table-of-contents\">\n%s</section>\n"
- (replace-regexp-in-string "<a href=\"#" "<a href=\"#/slide-" toc)))))
-
-(defun org-reveal-inner-template (contents info)
- "Return body of document string after HTML conversion.
-CONTENTS is the transcoded contents string. INFO is a plist
-holding export options."
- (concat
- ;; Table of contents.
- (let ((depth (plist-get info :with-toc)))
- (when (and depth
- (not (plist-get info :reveal-subtree)))
- (org-reveal-toc depth info)))
- ;; Document contents.
- contents))
-
-(defun org-reveal-parse-token (key &optional value)
- "Return HTML tags or perform SIDE EFFECT according to key.
-Use the previous section tag as the tag of the split section. "
- (case (intern key)
- (split (format "</section>\n%s" org-reveal--last-slide-section-tag ""))))
-
-(defun org-reveal-parse-keyword-value (value)
- "According to the value content, return HTML tags to split slides."
- (let ((tokens (mapcar
- (lambda (x) (split-string x ":"))
- (split-string value))))
- (mapconcat
- (lambda (x) (apply 'org-reveal-parse-token x))
- tokens
- "")))
-
-;; Copied from org-html-format-list-item. Overwrite HTML class
-;; attribute when there is attr_html attributes.
-(defun org-reveal-format-list-item (contents type checkbox attributes info
- &optional term-counter-id
- headline)
- "Format a list item into HTML."
- (let ((attr-html (cond (attributes (format " %s" (org-html--make-attribute-string attributes)))
- (checkbox (format " class=\"%s\"" (symbol-name checkbox)))
- (t "")))
- (checkbox (concat (org-html-checkbox checkbox info)
- (and checkbox " ")))
- (br (org-html-close-tag "br" nil info)))
- (concat
- (case type
- (ordered
- (let* ((counter term-counter-id)
- (extra (if counter (format " value=\"%s\"" counter) "")))
- (concat
- (format "<li%s%s>" attr-html extra)
- (when headline (concat headline br)))))
- (unordered
- (let* ((id term-counter-id)
- (extra (if id (format " id=\"%s\"" id) "")))
- (concat
- (format "<li%s%s>" attr-html extra)
- (when headline (concat headline br)))))
- (descriptive
- (let* ((term term-counter-id))
- (setq term (or term "(no term)"))
- ;; Check-boxes in descriptive lists are associated to tag.
- (concat (format "<dt%s>%s</dt>"
- attr-html (concat checkbox term))
- (format "<dd%s>" attr-html)))))
- (unless (eq type 'descriptive) checkbox)
- (and contents (org-trim contents))
- (case type
- (ordered "</li>")
- (unordered "</li>")
- (descriptive "</dd>")))))
-
-;; Copied from org-html-item, changed to call
-;; org-reveal-format-list-item.
-(defun org-reveal-item (item contents info)
- "Transcode an ITEM element from Org to Reveal.
-CONTENTS holds the contents of the item. INFO is a plist holding
-contextual information."
- (let* ((plain-list (org-export-get-parent item))
- (type (org-element-property :type plain-list))
- (counter (org-element-property :counter item))
- (attributes (org-export-read-attribute :attr_html item))
- ; (attributes (org-html--make-attribute-string (org-export-read-attribute :attr_html item)))
- (checkbox (org-element-property :checkbox item))
- (tag (let ((tag (org-element-property :tag item)))
- (and tag (org-export-data tag info)))))
- (org-reveal-format-list-item
- contents type checkbox attributes info (or tag counter))))
-
-(defun org-reveal-keyword (keyword contents info)
- "Transcode a KEYWORD element from Org to Reveal,
-and may change custom variables as SIDE EFFECT.
-CONTENTS is nil. INFO is a plist holding contextual information."
- (let ((key (org-element-property :key keyword))
- (value (org-element-property :value keyword)))
- (case (intern key)
- (REVEAL (org-reveal-parse-keyword-value value))
- (REVEAL_HTML value)
- (HTML value))))
-(defun org-reveal-embedded-svg (path)
- "Embed the SVG content into Reveal HTML."
- (with-temp-buffer
- (insert-file-contents-literally path)
- (let ((start (re-search-forward "<[ \t\n]*svg[ \t\n]"))
- (end (re-search-forward "<[ \t\n]*/svg[ \t\n]*>")))
- (concat "<svg " (buffer-substring-no-properties start end)))))
-
-(defun org-reveal--format-image-data-uri (link path info)
- "Generate the data URI for the image referenced by LINK."
- (let* ((ext (downcase (file-name-extension path))))
- (if (string= ext "svg")
- (org-reveal-embedded-svg path)
- (org-html-close-tag
- "img"
- (org-html--make-attribute-string
- (org-combine-plists
- (list :src
- (concat
- "data:image/"
- ;; Image type
- ext
- ";base64,"
- ;; Base64 content
- (with-temp-buffer
- (insert-file-contents-literally path)
- (base64-encode-region 1 (point-max))
- (buffer-string))))
- ;; Get attribute list from parent element
- ;; Copied from ox-html.el
- (let* ((parent (org-export-get-parent-element link))
- (link (let ((container (org-export-get-parent link)))
- (if (and (eq (org-element-type container) 'link)
- (org-html-inline-image-p link info))
- container
- link))))
- (and (eq (org-element-map parent 'link 'identity info t) link)
- (org-export-read-attribute :attr_html parent)))))
- info))))
-
-(defun org-reveal-link (link desc info)
- "Transcode a LINK object from Org to Reveal. The result is
- identical to ox-html expect for image links. When `org-reveal-single-file' is t,
-the result is the Data URIs of the referenced image."
- (let* ((want-embed-image (and (plist-get info :reveal-single-file)
- (plist-get info :html-inline-images)
- (string= "file" (org-element-property :type link))
- (org-export-inline-image-p
- link (plist-get info :html-inline-image-rules))))
- (raw-path (org-element-property :path link))
- (clean-path (org-reveal--file-url-to-path raw-path))
- (can-embed-image (and want-embed-image
- (file-readable-p clean-path))))
- (if can-embed-image
- (org-reveal--format-image-data-uri link clean-path info)
- (if want-embed-image
- (error "Cannot embed image %s" raw-path)
- (replace-regexp-in-string "<a href=\"#" "<a href=\"#/slide-"
- (org-html-link link desc info))))))
-
-(defun org-reveal-latex-environment (latex-env contents info)
- "Transcode a LaTeX environment from Org to Reveal.
-
-LATEX-ENV is the Org element. CONTENTS is the contents of the environment. INFO is a plist holding contextual information "
- (setq info (plist-put info :reveal-mathjax t))
- (let ((attrs (org-export-read-attribute :attr_html latex-env)))
- (format "<div%s>\n%s\n</div>\n"
- (if attrs (concat " " (org-html--make-attribute-string attrs)) "")
- (org-html-latex-environment latex-env contents info))))
-
-(defun org-reveal-plain-list (plain-list contents info)
- "Transcode a PLAIN-LIST element from Org to Reveal.
-
-CONTENTS is the contents of the list. INFO is a plist holding
-contextual information.
-
-Extract and set `attr_html' to plain-list tag attributes."
- (let ((tag (case (org-element-property :type plain-list)
- (ordered "ol")
- (unordered "ul")
- (descriptive "dl")))
- (attrs (org-export-read-attribute :attr_html plain-list)))
- (format "%s<%s%s>\n%s\n</%s>%s"
- (if (string= org-html-checkbox-type 'html) "<form>" "")
- tag
- (if attrs (concat " " (org-html--make-attribute-string attrs)) "")
- contents
- tag
- (if (string= org-html-checkbox-type 'html) "</form>" ""))))
-
-(defun org-reveal--build-pre/postamble (type info)
- "Return document preamble or postamble as a string, or nil."
- (let ((section (plist-get info (intern (format ":reveal-%s" type))))
- (spec (org-html-format-spec info)))
- (when section
- (let ((section-contents
- (if (functionp (intern section)) (funcall (intern section) info)
- ;; else section is a string.
- (format-spec section spec))))
- (when (org-string-nw-p section-contents)
- (org-element-normalize-string section-contents))))))
-
-
-(defun org-reveal-section (section contents info)
- "Transcode a SECTION element from Org to Reveal.
-CONTENTS holds the contents of the section. INFO is a plist
-holding contextual information."
- ;; Just return the contents. No "<div>" tags.
- contents)
-
-(defun org-reveal--using-highlight.js (info)
- "Check whether highlight.js plugin is enabled."
- (let ((reveal-plugins (condition-case e
- (car (read-from-string (plist-get info :reveal-plugins)))
- (end-of-file nil)
- (wrong-type-argument nil))))
- (memq 'highlight (or (and reveal-plugins (listp reveal-plugins) reveal-plugins)
- org-reveal-plugins))))
-
-(defun org-reveal-src-block (src-block contents info)
- "Transcode a SRC-BLOCK element from Org to Reveal.
-CONTENTS holds the contents of the item. INFO is a plist holding
-contextual information."
- (if (org-export-read-attribute :attr_html src-block :textarea)
- (org-html--textarea-block src-block)
- (let* ((use-highlight (org-reveal--using-highlight.js info))
- (lang (org-element-property :language src-block))
- (caption (org-export-get-caption src-block))
- (code (if (not use-highlight)
- (org-html-format-code src-block info)
- (cl-letf (((symbol-function 'org-html-htmlize-region-for-paste)
- #'buffer-substring))
- (org-html-format-code src-block info))))
- (frag (org-export-read-attribute :attr_reveal src-block :frag))
- (code-attribs (or (org-export-read-attribute
- :attr_reveal src-block :code_attribs) ""))
- (label (let ((lbl (org-element-property :name src-block)))
- (if (not lbl) ""
- (format " id=\"%s\"" lbl)))))
- (if (not lang)
- (format "<pre %s%s>\n%s</pre>"
- (or (frag-class frag info) " class=\"example\"")
- label
- code)
- (format
- "<div class=\"org-src-container\">\n%s%s\n</div>"
- (if (not caption) ""
- (format "<label class=\"org-src-name\">%s</label>"
- (org-export-data caption info)))
- (if use-highlight
- (format "\n<pre%s%s><code class=\"%s\" %s>%s</code></pre>"
- (or (frag-class frag info) "")
- label lang code-attribs code)
- (format "\n<pre %s%s>%s</pre>"
- (or (frag-class frag info)
- (format " class=\"src src-%s\"" lang))
- label code)))))))
-
-(defun org-reveal-quote-block (quote-block contents info)
- "Transcode a QUOTE-BLOCK element from Org to Reveal.
-CONTENTS holds the contents of the block INFO is a plist holding
-contextual information."
- (format "<blockquote %s>\n%s</blockquote>"
- (frag-class (org-export-read-attribute :attr_reveal quote-block :frag) info)
- contents))
-
-
-(defun org-reveal--auto-title-slide-template (info)
- "Generate the automatic title slide template."
- (let* ((spec (org-html-format-spec info))
- (title (org-export-data (plist-get info :title) info))
- (author (cdr (assq ?a spec)))
- (email (cdr (assq ?e spec)))
- (date (cdr (assq ?d spec))))
- (concat
- (when (and (plist-get info :with-title)
- (org-string-nw-p title))
- (concat "<h1 class=\"title\">" title "</h1>"))
- (when (and (plist-get info :with-author)
- (org-string-nw-p author))
- (concat "<h2 class=\"author\">" author "</h2>"))
- (when (and (plist-get info :with-email)
- (org-string-nw-p email))
- (concat "<h2 class=\"email\">" email "</h2>"))
- (when (and (plist-get info :with-date)
- (org-string-nw-p date))
- (concat "<h2 class=\"date\">" date "</h2>"))
- (when (plist-get info :time-stamp-file)
- (concat "<p class=\"date\">"
- (org-html--translate "Created" info)
- ": "
- (format-time-string
- (plist-get info :html-metadata-timestamp-format))
- "</p>")))))
-
-(defun org-reveal-template (contents info)
- "Return complete document string after HTML conversion.
-contents is the transcoded contents string.
-info is a plist holding export options."
- (concat
- (format "<!DOCTYPE html>\n<html%s>\n<head>\n"
- (if-format " lang=\"%s\"" (plist-get info :language)))
- "<meta charset=\"utf-8\"/>\n"
- (if-format "<title>%s</title>\n" (org-export-data (plist-get info :title) info))
- (if-format "<meta name=\"author\" content=\"%s\"/>\n" (plist-get info :author))
- (if-format "<meta name=\"description\" content=\"%s\"/>\n" (plist-get info :description))
- (if-format "<meta name=\"keywords\" content=\"%s\"/>\n" (plist-get info :keywords))
- (org-reveal-stylesheets info)
- (org-reveal-mathjax-scripts info)
- (org-reveal--build-pre/postamble 'head-preamble info)
- (org-element-normalize-string (plist-get info :html-head))
- (org-element-normalize-string (plist-get info :html-head-extra))
- "</head>
-<body>\n"
- (org-reveal--build-pre/postamble 'preamble info)
- "<div class=\"reveal\">
-<div class=\"slides\">\n"
- ;; Title slides
- (let ((title-slide (plist-get info :reveal-title-slide)))
- (when (and title-slide (not (plist-get info :reveal-subtree)))
- (let ((title-slide-background (plist-get info :reveal-title-slide-background))
- (title-slide-background-size (plist-get info :reveal-title-slide-background-size))
- (title-slide-background-position (plist-get info :reveal-title-slide-background-position))
- (title-slide-background-repeat (plist-get info :reveal-title-slide-background-repeat))
- (title-slide-background-transition (plist-get info :reveal-title-slide-background-transition)))
- (concat "<section id=\"sec-title-slide\""
- (when title-slide-background
- (concat " data-background=\"" title-slide-background "\""))
- (when title-slide-background-size
- (concat " data-background-size=\"" title-slide-background-size "\""))
- (when title-slide-background-position
- (concat " data-background-position=\"" title-slide-background-position "\""))
- (when title-slide-background-repeat
- (concat " data-background-repeat=\"" title-slide-background-repeat "\""))
- (when title-slide-background-transition
- (concat " data-background-transition=\"" title-slide-background-transition "\""))
- ">"
- (cond ((eq title-slide nil) nil)
- ((stringp title-slide) (format-spec title-slide (org-html-format-spec info)))
- ((eq title-slide 'auto) (org-reveal--auto-title-slide-template info)))
- "\n</section>\n"))))
- contents
- "</div>
-</div>\n"
- (org-reveal--build-pre/postamble 'postamble info)
- (org-reveal-scripts info)
- "</body>
-</html>\n"))
-
-(defun org-reveal-filter-parse-tree (tree backend info)
- "Do filtering before parsing TREE.
-
-Tree is the parse tree being exported. BACKEND is the export
-back-end used. INFO is a plist-used as a communication channel.
-
-Assuming BACKEND is `reveal'.
-
-Each `attr_reveal' attribute is mapped to corresponding
-`attr_html' attributes."
- (let ((default-frag-style (plist-get info :reveal-default-frag-style)))
- (org-element-map tree (remq 'item org-element-all-elements)
- (lambda (elem) (org-reveal-append-frag elem default-frag-style))))
- ;; Return the updated tree.
- tree)
-
-(defun org-reveal--update-attr-html (elem frag default-style &optional frag-index)
- "Update ELEM's attr_html atrribute with reveal's
-fragment attributes."
- (let ((attr-html (org-element-property :attr_html elem)))
- (when (and frag (not (string= frag "none")))
- (push (cond ((string= frag t)
- (if default-style (format ":class fragment %s" default-style)
- ":class fragment"))
- (t (format ":class fragment %s" frag)))
- attr-html)
- (when frag-index
- (push (format ":data-fragment-index %s" frag-index) attr-html)))
- (org-element-put-property elem :attr_html attr-html)))
-
-(defun org-reveal-append-frag (elem default-style)
- "Read org-reveal's fragment attribute from ELEM and append
-transformed fragment attribute to ELEM's attr_html plist."
- (let ((frag (org-export-read-attribute :attr_reveal elem :frag))
- (frag-index (org-export-read-attribute :attr_reveal elem :frag_idx)))
- (if frag
- (cond ((and (string= (org-element-type elem) 'plain-list)
- (char-equal (string-to-char frag) ?\())
- (let* ((frag-list (car (read-from-string frag)))
- (frag-list (if default-style
- (mapcar (lambda (s)
- "Replace t with default-style"
- (if (string= s t) default-style
- s))
- frag-list)
- frag-list))
- (items (org-element-contents elem)))
- (if frag-index
- (mapcar* 'org-reveal--update-attr-html
- items frag-list default-style (car (read-from-string frag-index)))
- (let* ((last-frag (car (last frag-list)))
- (tail-list (mapcar (lambda (a) last-frag)
- (number-sequence (+ (length frag-list) 1)
- (length items))))
- (default-style-list
- (mapcar (lambda (a) default-style)
- (number-sequence 1 (length items)))))
- (nconc frag-list tail-list)
- (mapcar* 'org-reveal--update-attr-html items frag-list default-style-list)))))
- (t (org-reveal--update-attr-html elem frag default-style frag-index)))
- elem)))
-
-(defvar client-multiplex nil
- "used to cause generation of client html file for multiplex")
-
-(defun org-reveal-export-to-html
- (&optional async subtreep visible-only body-only ext-plist)
- "Export current buffer to a reveal.js HTML file."
- (interactive)
- (let* ((extension (concat "." org-html-extension))
- (file (org-export-output-file-name extension subtreep))
- (clientfile (org-export-output-file-name (concat "_client" extension) subtreep)))
-
- ; export filename_client HTML file if multiplexing
- (setq client-multiplex nil)
- (setq retfile (org-export-to-file 'reveal file
- async subtreep visible-only body-only ext-plist))
-
- ; export the client HTML file if client-multiplex is set true
- ; by previous call to org-export-to-file
- (if (eq client-multiplex t)
- (org-export-to-file 'reveal clientfile
- async subtreep visible-only body-only ext-plist))
- (cond (t retfile))))
-
-(defun org-reveal-export-to-html-and-browse
- (&optional async subtreep visible-only body-only ext-plist)
- "Export current buffer to a reveal.js and browse HTML file."
- (interactive)
- (browse-url-of-file (expand-file-name (org-reveal-export-to-html async subtreep visible-only body-only ext-plist))))
-
-(defun org-reveal-export-current-subtree
- (&optional async subtreep visible-only body-only ext-plist)
- "Export current subtree to a Reveal.js HTML file."
- (interactive)
- (org-narrow-to-subtree)
- (let ((ret (org-reveal-export-to-html async subtreep visible-only body-only (plist-put ext-plist :reveal-subtree t))))
- (widen)
- ret))
-
-;;;###autoload
-(defun org-reveal-publish-to-reveal
- (plist filename pub-dir)
- "Publish an org file to Html.
-
-FILENAME is the filename of the Org file to be published. PLIST
-is the property list for the given project. PUB-DIR is the
-publishing directory.
-
-Return output file name."
- (org-publish-org-to 'reveal filename ".html" plist pub-dir))
-
-;; Register auto-completion for speaker notes.
-(when org-reveal-note-key-char
- (add-to-list 'org-structure-template-alist
- (list org-reveal-note-key-char "#+BEGIN_NOTES\n\?\n#+END_NOTES")))
-
-(provide 'ox-reveal)
-
-;;; ox-reveal.el ends here
--- /dev/null
+;;; ox-reveal.el --- reveal.js Presentation Back-End for Org Export Engine
+
+;; Copyright (C) 2013 Yujie Wen
+
+;; Author: Yujie Wen <yjwen.ty at gmail dot com>
+;; Created: 2013-04-27
+;; Version: 1.0
+;; Package-Version: 20190918.1627
+;; Package-Requires: ((org "8.3"))
+;; Keywords: outlines, hypermedia, slideshow, presentation
+
+;; This file is not part of GNU Emacs.
+
+;;; Copyright Notice:
+
+;; 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 GNU Emacs. If not, see <http://www.gnu.org/licenses/>.
+
+;; Please see "Readme.org" for detail introductions.
+
+;; Pull request: Multiplex Support - Stephen Barrett <Stephen dot Barrewtt at scss dot tcd dot ie
+
+;;; Code:
+
+(require 'ox-html)
+(require 'cl)
+
+(org-export-define-derived-backend 'reveal 'html
+
+ :menu-entry
+ '(?R "Export to reveal.js HTML Presentation"
+ ((?R "To file" org-reveal-export-to-html)
+ (?B "To file and browse" org-reveal-export-to-html-and-browse)
+ (?S "Current subtree to file" org-reveal-export-current-subtree)))
+
+ :options-alist
+ '((:reveal-control nil "reveal_control" nil t)
+ (:reveal-progress nil "reveal_progress" nil t)
+ (:reveal-history nil "reveal_history" nil t)
+ (:reveal-center nil "reveal_center" nil t)
+ (:reveal-rolling-links nil "reveal_rolling_links" nil t)
+ (:reveal-slide-number nil "reveal_slide_number" nil t)
+ (:reveal-keyboard nil "reveal_keyboard" nil t)
+ (:reveal-overview nil "reveal_overview" nil t)
+ (:reveal-width nil "reveal_width" nil t)
+ (:reveal-height nil "reveal_height" nil t)
+ (:reveal-margin "REVEAL_MARGIN" nil nil t)
+ (:reveal-min-scale "REVEAL_MIN_SCALE" nil nil t)
+ (:reveal-max-scale "REVEAL_MAX_SCALE" nil nil t)
+ (:reveal-root "REVEAL_ROOT" nil org-reveal-root t)
+ (:reveal-trans "REVEAL_TRANS" nil nil t)
+ (:reveal-speed "REVEAL_SPEED" nil nil t)
+ (:reveal-theme "REVEAL_THEME" nil org-reveal-theme t)
+ (:reveal-extra-css "REVEAL_EXTRA_CSS" nil org-reveal-extra-css newline)
+ (:reveal-extra-js "REVEAL_EXTRA_JS" nil org-reveal-extra-js nil)
+ (:reveal-extra-initial-js "REVEAL_EXTRA_INITIAL_JS" nil org-reveal-extra-initial-js newline)
+ (:reveal-hlevel "REVEAL_HLEVEL" nil nil t)
+ (:reveal-title-slide "REVEAL_TITLE_SLIDE" "reveal_title_slide" org-reveal-title-slide newline)
+ (:reveal-slide-global-header nil "reveal_global_header" org-reveal-global-header t)
+ (:reveal-slide-global-footer nil "reveal_global_footer" org-reveal-global-footer t)
+ (:reveal-title-slide-background "REVEAL_TITLE_SLIDE_BACKGROUND" nil nil t)
+ (:reveal-title-slide-background-size "REVEAL_TITLE_SLIDE_BACKGROUND_SIZE" nil nil t)
+ (:reveal-title-slide-background-position "REVEAL_TITLE_SLIDE_BACKGROUND_POSITION" nil nil t)
+ (:reveal-title-slide-background-repeat "REVEAL_TITLE_SLIDE_BACKGROUND_REPEAT" nil nil t)
+ (:reveal-title-slide-background-transition "REVEAL_TITLE_SLIDE_BACKGROUND_TRANSITION" nil nil t)
+ (:reveal-title-slide-background-opacity "REVEAL_TITLE_SLIDE_BACKGROUND_OPACITY" nil nil t)
+ (:reveal-default-slide-background "REVEAL_DEFAULT_SLIDE_BACKGROUND" nil nil t)
+ (:reveal-default-slide-background-size "REVEAL_DEFAULT_SLIDE_BACKGROUND_SIZE" nil nil t)
+ (:reveal-default-slide-background-position "REVEAL_DEFAULT_SLIDE_BACKGROUND_POSITION" nil nil t)
+ (:reveal-default-slide-background-repeat "REVEAL_DEFAULT_SLIDE_BACKGROUND_REPEAT" nil nil t)
+ (:reveal-default-slide-background-opacity "REVEAL_DEFAULT_SLIDE_BACKGROUND_OPACITY" nil nil t)
+ (:reveal-default-slide-background-transition "REVEAL_DEFAULT_SLIDE_BACKGROUND_TRANSITION" nil nil t)
+ (:reveal-mathjax-url "REVEAL_MATHJAX_URL" nil org-reveal-mathjax-url t)
+ (:reveal-preamble "REVEAL_PREAMBLE" nil org-reveal-preamble t)
+ (:reveal-head-preamble "REVEAL_HEAD_PREAMBLE" nil org-reveal-head-preamble newline)
+ (:reveal-postamble "REVEAL_POSTAMBLE" nil org-reveal-postamble t)
+ (:reveal-multiplex-id "REVEAL_MULTIPLEX_ID" nil org-reveal-multiplex-id nil)
+ (:reveal-multiplex-secret "REVEAL_MULTIPLEX_SECRET" nil org-reveal-multiplex-secret nil)
+ (:reveal-multiplex-url "REVEAL_MULTIPLEX_URL" nil org-reveal-multiplex-url nil)
+ (:reveal-multiplex-socketio-url "REVEAL_MULTIPLEX_SOCKETIO_URL" nil org-reveal-multiplex-socketio-url nil)
+ (:reveal-slide-header "REVEAL_SLIDE_HEADER" nil org-reveal-slide-header t)
+ (:reveal-slide-footer "REVEAL_SLIDE_FOOTER" nil org-reveal-slide-footer t)
+ (:reveal-plugins "REVEAL_PLUGINS" nil nil t)
+ (:reveal-external-plugins "REVEAL_EXTERNAL_PLUGINS" nil nil newline)
+ (:reveal-default-frag-style "REVEAL_DEFAULT_FRAG_STYLE" nil org-reveal-default-frag-style t)
+ (:reveal-single-file nil "reveal_single_file" org-reveal-single-file t)
+ (:reveal-init-script "REVEAL_INIT_SCRIPT" nil org-reveal-init-script space)
+ (:reveal-init-options "REVEAL_INIT_OPTIONS" nil org-reveal-init-options newline)
+ (:reveal-highlight-css "REVEAL_HIGHLIGHT_CSS" nil org-reveal-highlight-css nil)
+ )
+
+ :translate-alist
+ '((headline . org-reveal-headline)
+ (inner-template . org-reveal-inner-template)
+ (item . org-reveal-item)
+ (keyword . org-reveal-keyword)
+ (link . org-reveal-link)
+ (latex-environment . org-reveal-latex-environment)
+ (latex-fragment . (lambda (frag contents info)
+ (setq info (plist-put info :reveal-mathjax t))
+ (org-html-latex-fragment frag contents info)))
+ (plain-list . org-reveal-plain-list)
+ (quote-block . org-reveal-quote-block)
+ (section . org-reveal-section)
+ (src-block . org-reveal-src-block)
+ (special-block . org-reveal-special-block)
+ (template . org-reveal-template))
+
+ :filters-alist '((:filter-parse-tree . org-reveal-filter-parse-tree))
+ )
+
+(defcustom org-reveal-root "./reveal.js"
+ "The root directory of reveal.js packages. It is the directory
+ within which js/reveal.js is."
+ :group 'org-export-reveal)
+
+(defcustom org-reveal-hlevel 1
+ "The minimum level of headings that should be grouped into
+vertical slides."
+ :group 'org-export-reveal
+ :type 'integer)
+
+(defun org-reveal--get-hlevel (info)
+ "Get HLevel value safely.
+If option \"REVEAL_HLEVEL\" is set, retrieve integer value from it,
+else get value from custom variable `org-reveal-hlevel'."
+ (let ((hlevel-str (plist-get info :reveal-hlevel)))
+ (if hlevel-str (string-to-number hlevel-str)
+ org-reveal-hlevel)))
+
+(defcustom org-reveal-title-slide 'auto
+ "Non-nil means insert a title slide.
+
+When set to `auto', an automatic title slide is generated. When
+set to a string, use this string as a format string for title
+slide, where the following escaping elements are allowed:
+
+ %t stands for the title
+ %a stands for the author's name.
+ %e stands for the author's email.
+ %d stands for the date.
+ %% stands for a literal %."
+ :group 'org-export-reveal
+ :type '(choice (const :tag "No title slide" nil)
+ (const :tag "Auto title slide" 'auto)
+ (string :tag "Custom title slide")))
+(defcustom org-reveal-init-options
+ ""
+ "Reveal.js initialization options, JS code snippet to be
+embedded into Reveal.initilize()."
+ :group 'org-export-reveal
+ :type 'string)
+
+(defcustom org-reveal-transition
+ "default"
+ "Reveal transistion style."
+ :group 'org-export-reveal
+ :type 'string)
+
+(defcustom org-reveal-theme
+ "moon"
+ "Reveal theme."
+ :group 'org-export-reveal
+ :type 'string)
+
+(defcustom org-reveal-extra-js
+ ""
+ "URL to extra JS file."
+ :group 'org-export-reveal
+ :type 'string)
+
+(defcustom org-reveal-extra-initial-js
+ ""
+ "Scripts to be embedded into reveal.js initialization."
+ :group 'org-export-reveal
+ :type 'string)
+
+(defcustom org-reveal-extra-css
+ ""
+ "URL to extra css file."
+ :group 'org-export-reveal
+ :type 'string)
+
+
+(defcustom org-reveal-multiplex-id ""
+ "The ID to use for multiplexing."
+ :group 'org-export-reveal
+ :type 'string)
+
+(defcustom org-reveal-multiplex-secret ""
+ "The secret to use for master slide."
+ :group 'org-export-reveal
+ :type 'string)
+
+(defcustom org-reveal-multiplex-url ""
+ "The url of the socketio server."
+ :group 'org-export-reveal
+ :type 'string)
+
+(defcustom org-reveal-multiplex-socketio-url
+ ""
+ "the url of the socketio.js library"
+ :group 'org-export-reveal
+ :type 'string)
+
+(defcustom org-reveal-mathjax-url
+ "https://cdnjs.cloudflare.com/ajax/libs/mathjax/2.7.5/MathJax.js?config=TeX-AMS-MML_HTMLorMML"
+ "Default MathJax URL."
+ :group 'org-export-reveal
+ :type 'string)
+
+(defcustom org-reveal-preamble nil
+ "Preamble contents."
+ :group 'org-export-reveal
+ :type 'string)
+
+(defcustom org-reveal-head-preamble nil
+ "Preamble contents for head part."
+ :group 'org-export-reveal
+ :type 'string)
+
+(defcustom org-reveal-postamble nil
+ "Postamble contents."
+ :group 'org-export-reveal
+ :type 'string)
+
+(defcustom org-reveal-slide-header nil
+ "HTML content used as Reveal.js slide header"
+ :group 'org-export-reveal
+ :type 'string)
+
+(defcustom org-reveal-global-header nil
+ "If non nil, slide header defined in org-reveal-slide-header
+ is displayed also on title and toc slide"
+ :group 'org-export-reveal
+ :type 'boolean)
+
+(defcustom org-reveal-global-footer nil
+ "If non nil, slide footer defined in org-reveal-slide-footer
+ is displayed also on title and toc slide"
+ :group 'org-export-reveal
+ :type 'boolean)
+
+(defcustom org-reveal-slide-footer nil
+ "HTML content used as Reveal.js slide footer"
+ :group 'org-export-reveal
+ :type 'string)
+
+(defcustom org-reveal-default-frag-style nil
+ "Default fragment style."
+ :group 'org-export-reveal
+ :type 'string)
+
+(defcustom org-reveal-plugins
+ '(classList markdown zoom notes)
+ "Default builtin plugins"
+ :group 'org-export-reveal
+ :type '(set
+ (const classList)
+ (const markdown)
+ (const highlight)
+ (const zoom)
+ (const notes)
+ (const search)
+ (const remotes)
+ (const multiplex)))
+
+(defcustom org-reveal-external-plugins nil
+ "Additional third-party Plugins to load with reveal.
+Each entry should contain a name and an expression of the form
+\"{src: '%srelative/path/from/reveal/root', async:true/false,condition: jscallbackfunction(){}}\"
+Note that some plugins have dependencies such as jquery; these must be included here as well,
+BEFORE the plugins that depend on them."
+ :group 'org-export-reveal
+ :type 'alist)
+
+(defcustom org-reveal-single-file nil
+ "Export presentation into one single HTML file, which embedded
+ JS scripts and pictures."
+ :group 'org-export-reveal
+ :type 'boolean)
+
+(defcustom org-reveal-init-script nil
+ "Custom script that will be passed to Reveal.initialize."
+ :group 'org-export-reveal
+ :type 'string)
+
+(defcustom org-reveal-highlight-css "%r/lib/css/zenburn.css"
+ "Hightlight.js CSS file."
+ :group 'org-export-reveal
+ :type 'string)
+
+(defcustom org-reveal-note-key-char "n"
+ "If not nil, org-reveal-note-key-char's value is registered as
+ the key character to Org-mode's structure completion for
+ Reveal.js notes. When `<' followed by the key character are
+ typed and then the completion key is pressed, which is usually
+ `TAB', \"#+BEGIN_NOTES\" and \"#+END_NOTES\" is inserted.
+
+ The default value is \"n\". Set the variable to nil to disable
+ registering the completion"
+ :group 'org-export-reveal
+ :type 'string)
+
+(defcustom org-reveal-klipsify-src nil
+ "Set to non-nil if you would like to make source code blocks editable in exported presentation."
+ :group 'org-export-reveal
+ :type 'boolean)
+
+(defcustom org-reveal-klipse-css "https://storage.googleapis.com/app.klipse.tech/css/codemirror.css"
+ "Location of the codemirror css file for use with klipse."
+ :group 'org-export-reveal
+ :type 'string)
+
+(defcustom org-reveal-klipse-js "https://storage.googleapis.com/app.klipse.tech/plugin_prod/js/klipse_plugin.min.js"
+ "location of the klipse js source code."
+ :group 'org-export-reveal
+ :type 'string)
+
+(defcustom org-reveal-slide-id-head "slide-"
+ "The heading string for slide ID"
+ :group 'org-export-reveal
+ :type 'string)
+
+(defcustom org-reveal-ignore-speaker-notes nil
+ "Ignore speaker notes."
+ :group 'org-export-reveal
+ :type 'boolean)
+
+(defun if-format (fmt val)
+ (if val (format fmt val) ""))
+
+(defun frag-style (frag info)
+ "Return proper fragment string according to FRAG and the default fragment style.
+FRAG is the fragment style set on element, INFO is a plist
+holding contextual information."
+ (cond
+ ((string= frag t)
+ (let ((default-frag-style (plist-get info :reveal-default-frag-style)))
+ (if default-frag-style (format "fragment %s" default-frag-style)
+ "fragment")))
+ (t (format "fragment %s" frag))))
+
+(defun frag-class (frag info)
+ "Return proper HTML string description of fragment style.
+FRAG is the fragment style set on element, INFO is a plist
+holding contextual information."
+ (and frag
+ (format " class=\"%s\"" (frag-style frag info))))
+
+(defun org-reveal-special-block (special-block contents info)
+ "Transcode a SPECIAL-BLOCK element from Org to Reveal.
+CONTENTS holds the contents of the block. INFO is a plist
+holding contextual information.
+
+If the block type is 'NOTES', transcode the block into a
+Reveal.js slide note. Otherwise, export the block as by the HTML
+exporter."
+ (let ((block-type (org-element-property :type special-block)))
+ (if (string= (upcase block-type) "NOTES")
+ (if org-reveal-ignore-speaker-notes
+ ""
+ (format "<aside class=\"notes\">\n%s\n</aside>\n" contents))
+ (org-html-special-block special-block contents info))))
+
+(defun org-reveal-slide-section-tag (headline info for-split)
+ "Generate the <section> tag for a slide."
+ (let* ((preferred-id (or (org-element-property :CUSTOM_ID headline)
+ (org-export-get-reference headline info)))
+ (default-slide-background (plist-get info :reveal-default-slide-background))
+ (default-slide-background-size (plist-get info :reveal-default-slide-background-size))
+ (default-slide-background-position (plist-get info :reveal-default-slide-background-position))
+ (default-slide-background-repeat (plist-get info :reveal-default-slide-background-repeat))
+ (default-slide-background-transition (plist-get info :reveal-default-slide-background-transition))
+)
+ (format "<section %s%s>\n"
+ (org-html--make-attribute-string
+ `(:id ,(concat org-reveal-slide-id-head
+ preferred-id
+ (if for-split "-split" ""))
+ :class ,(org-element-property :HTML_CONTAINER_CLASS headline)
+ :data-transition ,(org-element-property :REVEAL_DATA_TRANSITION headline)
+ :data-state ,(org-element-property :REVEAL_DATA_STATE headline)
+ :data-background ,(or (org-element-property :REVEAL_BACKGROUND headline)
+ default-slide-background)
+ :data-background-size ,(or (org-element-property :REVEAL_BACKGROUND_SIZE headline)
+ default-slide-background-size)
+ :data-background-position ,(or (org-element-property :REVEAL_BACKGROUND_POSITION headline)
+ default-slide-background-position)
+ :data-background-repeat ,(or (org-element-property :REVEAL_BACKGROUND_REPEAT headline)
+ default-slide-background-repeat)
+ :data-background-transition ,(or (org-element-property :REVEAL_BACKGROUND_TRANS headline)
+ default-slide-background-transition)
+ :data-background-opacity
+ ,(or (org-element-property :REVEAL_BACKGROUND_OPACITY headline)
+ (plist-get info :reveal-default-slide-background-opacity))))
+ (let ((extra-attrs (org-element-property :REVEAL_EXTRA_ATTR headline)))
+ (if-format " %s" extra-attrs)))))
+
+;; Copied from org-html-headline and modified to embed org-reveal
+;; specific attributes.
+(defun org-reveal-headline (headline contents info)
+ "Transcode a HEADLINE element from Org to HTML.
+CONTENTS holds the contents of the headline. INFO is a plist
+holding contextual information."
+ (unless (org-element-property :footnote-section-p headline)
+ (if (org-export-low-level-p headline info)
+ ;; This is a deep sub-tree: export it as in ox-html.
+ (org-html-headline headline contents info)
+ ;; Standard headline. Export it as a slide
+ (let* ((level (org-export-get-relative-level headline info))
+ (section-number (mapconcat #'number-to-string
+ (org-export-get-headline-number headline info)
+ "-"))
+ (hlevel (org-reveal--get-hlevel info))
+ (header (plist-get info :reveal-slide-header))
+ (header-div (when header (format "<div class=\"slide-header\">%s</div>\n" header)))
+ (footer (plist-get info :reveal-slide-footer))
+ (footer-div (when footer (format "<div class=\"slide-footer\">%s</div>\n" footer)))
+ (first-sibling (org-export-first-sibling-p headline info))
+ (last-sibling (org-export-last-sibling-p headline info)))
+ (concat
+ (if (or (/= level 1) (not first-sibling))
+ ;; Not the first heading. Close previou slide.
+ (concat
+ ;; Slide footer if any
+ footer-div
+ ;; Close previous slide
+ "</section>\n"
+ (if (<= level hlevel)
+ ;; Close previous vertical slide group.
+ "</section>\n")))
+ (if (<= level hlevel)
+ ;; Add an extra "<section>" to group following slides
+ ;; into vertical slide group. Transition override
+ ;; attributes are attached at this level, too.
+ (let ((attrs
+ (org-html--make-attribute-string
+ `(:data-transition ,(org-element-property :REVEAL_DATA_TRANSITION headline)))))
+ (if (string= attrs "")
+ "<section>\n"
+ (format "<section %s>\n" attrs))))
+ ;; Start a new slide.
+ (org-reveal-slide-section-tag headline info nil)
+ ;; Slide header if any.
+ header-div
+ ;; The HTML content of the headline
+ ;; Strip the <div> tags, if any
+ (let ((html (org-html-headline headline contents info)))
+ (if (string-prefix-p "<div" html)
+ ;; Remove the first <div> and the last </div> tags from html
+ (concat "<"
+ (mapconcat 'identity
+ (butlast (cdr (split-string html "<" t)))
+ "<"))
+ ;; Return the HTML content unchanged
+ html))
+ (if (and (= level 1)
+ (org-export-last-sibling-p headline info))
+ ;; Last head 1. Close all slides.
+ (concat
+ ;; Slide footer if any
+ footer-div
+ "</section>\n</section>\n")))))))
+
+(defgroup org-export-reveal nil
+ "Options for exporting Orgmode files to reveal.js HTML pressentations."
+ :tag "Org Export Reveal"
+ :group 'org-export)
+
+(defun org-reveal--read-file (file)
+ "Return the content of file"
+ (with-temp-buffer
+ (insert-file-contents-literally file)
+ (buffer-string)))
+
+(defun org-reveal--file-url-to-path (url)
+ "Convert URL that points to local files to file path."
+ (replace-regexp-in-string
+ (if (string-equal system-type "windows-nt") "^file:///" "^file://")
+ "" url))
+
+(defun org-reveal--css-label (in-single-file file-name style-id)
+ "Generate an HTML label for including a CSS file, if
+ IN-SINGLE-FILE is t, the content of FILE-NAME is embedded,
+ otherwise, a `<link>' label is generated."
+ (when (and file-name (not (string= file-name "")))
+ (if in-single-file
+ ;; Single-file
+ (let ((local-file-name (org-reveal--file-url-to-path file-name)))
+ (if (file-readable-p local-file-name)
+ (concat "<style type=\"text/css\">\n"
+ (org-reveal--read-file local-file-name)
+ "\n</style>\n")
+ ;; But file is not readable.
+ (error "Cannot read %s" file-name)))
+ ;; Not in-single-file
+ (concat "<link rel=\"stylesheet\" href=\"" file-name "\""
+ (if style-id (format " id=\"%s\"" style-id))
+ "/>\n"))))
+
+(defun org-reveal-stylesheets (info)
+ "Return the HTML contents for declaring reveal stylesheets
+using custom variable `org-reveal-root'."
+ (let* ((root-path (file-name-as-directory (plist-get info :reveal-root)))
+ (reveal-css (concat root-path "css/reveal.css"))
+ (theme (plist-get info :reveal-theme))
+ (theme-css (concat root-path "css/theme/" theme ".css"))
+ (extra-css (plist-get info :reveal-extra-css))
+ (in-single-file (plist-get info :reveal-single-file)))
+ (concat
+ ;; Default embedded style sheets
+ "<style type=\"text/css\">
+.underline { text-decoration: underline; }
+</style>
+"
+ ;; stylesheets
+ (mapconcat (lambda (elem) (org-reveal--css-label in-single-file (car elem) (cdr elem)))
+ (append (list (cons reveal-css nil)
+ (cons theme-css "theme"))
+ (mapcar (lambda (a) (cons a nil))
+ (split-string extra-css "\n")))
+ "\n")
+
+ ;; Include CSS for highlight.js if necessary
+ (if (org-reveal--using-highlight.js info)
+ (format "<link rel=\"stylesheet\" href=\"%s\"/>"
+ (format-spec (plist-get info :reveal-highlight-css)
+ `((?r . ,(directory-file-name root-path))))))
+ ;; print-pdf
+ (if in-single-file ""
+ (format "
+<!-- If the query includes 'print-pdf', include the PDF print sheet -->
+<script>
+ if( window.location.search.match( /print-pdf/gi ) ) {
+ var link = document.createElement( 'link' );
+ link.rel = 'stylesheet';
+ link.type = 'text/css';
+ link.href = '%scss/print/pdf.css';
+ document.getElementsByTagName( 'head' )[0].appendChild( link );
+ }
+</script>
+"
+ root-path)))))
+
+(defun org-reveal-mathjax-scripts (info)
+ "Return the HTML contents for declaring MathJax scripts"
+ (if (plist-get info :reveal-mathjax)
+ ;; MathJax enabled.
+ (format "<script type=\"text/javascript\" src=\"%s\"></script>\n"
+ (plist-get info :reveal-mathjax-url))))
+
+(defun org-reveal-scripts (info)
+ "Return the necessary scripts for initializing reveal.js using
+custom variable `org-reveal-root'."
+ (let* ((root-path (file-name-as-directory (plist-get info :reveal-root)))
+ (reveal-js (concat root-path "js/reveal.js"))
+ ;; Local files
+ (local-root-path (org-reveal--file-url-to-path root-path))
+ (local-reveal-js (concat local-root-path "js/reveal.js"))
+ (in-single-file (plist-get info :reveal-single-file)))
+ (concat
+ ;; reveal.js/js/reveal.js
+ (if (and in-single-file
+ (file-readable-p local-reveal-js))
+ ;; Embed scripts into HTML
+ (concat "<script>\n"
+ (org-reveal--read-file local-reveal-js)
+ "\n</script>")
+ ;; Fall-back to extern script links
+ (if in-single-file
+ ;; Tried to embed scripts but failed. Print a message about possible errors.
+ (error (concat "Cannot read "
+ (mapconcat 'identity
+ (delq nil (mapcar (lambda (file) (if (not (file-readable-p file)) file))
+ (list local-reveal-js)))
+ ", "))))
+ (concat
+ "<script src=\"" reveal-js "\"></script>\n"))
+ ;; plugin headings
+ "
+<script>
+// Full list of configuration options available here:
+// https://github.com/hakimel/reveal.js#configuration
+Reveal.initialize({
+"
+
+ (let ((options (plist-get info :reveal-init-options)))
+ (and (string< "" options)
+ (format "%s,\n" options)))
+
+ ;; multiplexing - depends on defvar 'client-multiplex'
+ (when (plist-get info :reveal-multiplex-id)
+ (format
+"multiplex: {
+ secret: %s, // null if client
+ id: '%s', // id, obtained from socket.io server
+ url: '%s' // Location of socket.io server
+},\n"
+ (if (eq client-multiplex nil)
+ (format "'%s'" (plist-get info :reveal-multiplex-secret))
+ (format "null"))
+ (plist-get info :reveal-multiplex-id)
+ (plist-get info :reveal-multiplex-url)))
+
+ (let ((extra-initial-js (plist-get info :reveal-extra-initial-js)))
+ (unless (string= extra-initial-js "")
+ (format "%s,\n" extra-initial-js)))
+
+ ;; optional JS library heading
+ (if in-single-file ""
+ (concat
+ "
+// Optional libraries used to extend on reveal.js
+dependencies: [
+"
+ ;; JS libraries
+ (let* ((builtins
+ '(classList (format " { src: '%slib/js/classList.js', condition: function() { return !document.body.classList; } }" root-path)
+ markdown (format " { src: '%splugin/markdown/marked.js', condition: function() { return !!document.querySelector( '[data-markdown]' ); } },
+ { src: '%splugin/markdown/markdown.js', condition: function() { return !!document.querySelector( '[data-markdown]' ); } }" root-path root-path)
+ highlight (format " { src: '%splugin/highlight/highlight.js', async: true, callback: function() { hljs.initHighlightingOnLoad(); } }" root-path)
+ zoom (format " { src: '%splugin/zoom-js/zoom.js', async: true, condition: function() { return !!document.body.classList; } }" root-path)
+ notes (format " { src: '%splugin/notes/notes.js', async: true, condition: function() { return !!document.body.classList; } }" root-path)
+ search (format " { src: '%splugin/search/search.js', async: true, condition: function() { return !!document.body.classList; } }" root-path)
+ remotes (format " { src: '%splugin/remotes/remotes.js', async: true, condition: function() { return !!document.body.classList; } }" root-path)
+ multiplex (format " { src: '%s', async: true },\n%s"
+ (plist-get info :reveal-multiplex-socketio-url)
+ ; following ensures that either client.js or master.js is included depending on defva client-multiplex value state
+ (if (not client-multiplex)
+ (progn
+ (if (plist-get info :reveal-multiplex-secret)
+ (setq client-multiplex t))
+ (format " { src: '%splugin/multiplex/master.js', async: true }" root-path))
+ (format " { src: '%splugin/multiplex/client.js', async: true }" root-path)))))
+ (builtin-codes
+ (mapcar
+ (lambda (p)
+ (eval (plist-get builtins p)))
+ (let ((buffer-plugins (condition-case e
+ (car (read-from-string (plist-get info :reveal-plugins)))
+ (end-of-file nil)
+ (wrong-type-argument nil))))
+ (or (and buffer-plugins (listp buffer-plugins) buffer-plugins)
+ org-reveal-plugins))))
+ (external-plugins
+ (append
+ ;; Global setting
+ (cl-loop for (key . value) in org-reveal-external-plugins
+ collect (format value root-path ))
+ ;; Local settings
+ (let ((local-plugins (plist-get info :reveal-external-plugins)))
+ (and local-plugins
+ (list (format local-plugins root-path))))))
+
+ (all-plugins (if external-plugins (append external-plugins builtin-codes) builtin-codes))
+ (extra-codes (plist-get info :reveal-extra-js))
+ (total-codes
+ (if (string= "" extra-codes) all-plugins (append (list extra-codes) all-plugins))))
+ (mapconcat 'identity total-codes ",\n"))
+ "]\n"
+ ))
+ (let ((init-script (plist-get info :reveal-init-script)))
+ (if init-script (concat (if in-single-file "" ",") init-script)))
+ "});\n</script>\n")))
+
+(defun org-reveal-toc (depth info)
+ "Build a slide of table of contents."
+ (let ((toc (org-html-toc depth info)))
+ (when toc
+ (let ((toc-slide-with-header (plist-get info :reveal-slide-global-header))
+ (toc-slide-with-footer (plist-get info :reveal-slide-global-footer)))
+ (concat "<section id=\"table-of-contents\">\n"
+ (when toc-slide-with-header
+ (let ((header (plist-get info :reveal-slide-header)))
+ (when header (format "<div class=\"slide-header\">%s</div>\n" header))))
+ (replace-regexp-in-string "<a href=\"#" "<a href=\"#/slide-" toc)
+ (when toc-slide-with-footer
+ (let ((footer (plist-get info :reveal-slide-footer)))
+ (when footer (format "<div class=\"slide-footer\">%s</div>\n" footer))))
+ "</section>\n")))))
+
+(defun org-reveal-inner-template (contents info)
+ "Return body of document string after HTML conversion.
+CONTENTS is the transcoded contents string. INFO is a plist
+holding export options."
+ (concat
+ ;; Table of contents.
+ (let ((depth (plist-get info :with-toc)))
+ (when (and depth
+ (not (plist-get info :reveal-subtree)))
+ (org-reveal-toc depth info)))
+ ;; Document contents.
+ contents))
+
+(defun org-reveal-parse-token (keyword info key &optional value)
+ "Return HTML tags or perform SIDE EFFECT according to key.
+Use the previous section tag as the tag of the split section. "
+ (case (intern key)
+ (split
+ (let ((headline (org-element-property
+ :parent
+ (org-element-property
+ :parent
+ keyword))))
+ (concat
+ "</section>\n" ;; Close the previous section and start a new one.
+ (org-reveal-slide-section-tag headline info t)
+ (and value
+ (string= value "t")
+ ;; Add a title for the split slide
+ ;; Copy from `org-html-headline' and modified.
+ (let* ((title (org-export-data
+ (org-element-property :title headline)
+ info))
+ (level (+ (org-export-get-relative-level headline info)
+ (1- (plist-get info :html-toplevel-hlevel))))
+ (numberedp (org-export-numbered-headline-p headline info))
+ (numbers (org-export-get-headline-number headline info)))
+ (format "\n<h%d>%s</h%d>"
+ level
+ (concat
+ (and numberedp
+ (format
+ "<span class=\"section-number-%d\">%s</span> "
+ level
+ (mapconcat #'number-to-string numbers ".")))
+ title)
+ level))))))))
+
+(defun org-reveal-parse-keyword-value (keyward value info)
+ "According to the value content, return HTML tags to split slides."
+ (let ((tokens (mapcar
+ (lambda (x) (split-string x ":"))
+ (split-string value))))
+ (mapconcat
+ (lambda (x) (apply 'org-reveal-parse-token keyward info x))
+ tokens
+ "")))
+
+;; Copied from org-html-format-list-item. Overwrite HTML class
+;; attribute when there is attr_html attributes.
+(defun org-reveal-format-list-item (contents type checkbox attributes info
+ &optional term-counter-id
+ headline)
+ "Format a list item into HTML."
+ (let ((attr-html (cond (attributes (format " %s" (org-html--make-attribute-string attributes)))
+ (checkbox (format " class=\"%s\"" (symbol-name checkbox)))
+ (t "")))
+ (checkbox (concat (org-html-checkbox checkbox info)
+ (and checkbox " ")))
+ (br (org-html-close-tag "br" nil info)))
+ (concat
+ (case type
+ (ordered
+ (let* ((counter term-counter-id)
+ (extra (if counter (format " value=\"%s\"" counter) "")))
+ (concat
+ (format "<li%s%s>" attr-html extra)
+ (when headline (concat headline br)))))
+ (unordered
+ (let* ((id term-counter-id)
+ (extra (if id (format " id=\"%s\"" id) "")))
+ (concat
+ (format "<li%s%s>" attr-html extra)
+ (when headline (concat headline br)))))
+ (descriptive
+ (let* ((term term-counter-id))
+ (setq term (or term "(no term)"))
+ ;; Check-boxes in descriptive lists are associated to tag.
+ (concat (format "<dt%s>%s</dt>"
+ attr-html (concat checkbox term))
+ (format "<dd%s>" attr-html)))))
+ (unless (eq type 'descriptive) checkbox)
+ (and contents (org-trim contents))
+ (case type
+ (ordered "</li>")
+ (unordered "</li>")
+ (descriptive "</dd>")))))
+
+;; Copied from org-html-item, changed to call
+;; org-reveal-format-list-item.
+(defun org-reveal-item (item contents info)
+ "Transcode an ITEM element from Org to Reveal.
+CONTENTS holds the contents of the item. INFO is a plist holding
+contextual information."
+ (let* ((plain-list (org-export-get-parent item))
+ (type (org-element-property :type plain-list))
+ (counter (org-element-property :counter item))
+ (attributes (org-export-read-attribute :attr_html item))
+ ; (attributes (org-html--make-attribute-string (org-export-read-attribute :attr_html item)))
+ (checkbox (org-element-property :checkbox item))
+ (tag (let ((tag (org-element-property :tag item)))
+ (and tag (org-export-data tag info)))))
+ (org-reveal-format-list-item
+ contents type checkbox attributes info (or tag counter))))
+
+(defun org-reveal-keyword (keyword contents info)
+ "Transcode a KEYWORD element from Org to Reveal,
+and may change custom variables as SIDE EFFECT.
+CONTENTS is nil. INFO is a plist holding contextual information."
+ (let ((key (org-element-property :key keyword))
+ (value (org-element-property :value keyword)))
+ (case (intern key)
+ (REVEAL (org-reveal-parse-keyword-value keyword value info))
+ (REVEAL_HTML value)
+ (HTML value))))
+(defun org-reveal-embedded-svg (path)
+ "Embed the SVG content into Reveal HTML."
+ (with-temp-buffer
+ (insert-file-contents-literally path)
+ (let ((start (re-search-forward "<[ \t\n]*svg[ \t\n]"))
+ (end (re-search-forward "<[ \t\n]*/svg[ \t\n]*>")))
+ (concat "<svg " (buffer-substring-no-properties start end)))))
+
+(defun org-reveal--format-image-data-uri (link path info)
+ "Generate the data URI for the image referenced by LINK."
+ (let* ((ext (downcase (file-name-extension path))))
+ (if (string= ext "svg")
+ (org-reveal-embedded-svg path)
+ (org-html-close-tag
+ "img"
+ (org-html--make-attribute-string
+ (org-combine-plists
+ (list :src
+ (concat
+ "data:image/"
+ ;; Image type
+ ext
+ ";base64,"
+ ;; Base64 content
+ (with-temp-buffer
+ (insert-file-contents-literally path)
+ (base64-encode-region 1 (point-max))
+ (buffer-string))))
+ ;; Get attribute list from parent element
+ ;; Copied from ox-html.el
+ (let* ((parent (org-export-get-parent-element link))
+ (link (let ((container (org-export-get-parent link)))
+ (if (and (eq (org-element-type container) 'link)
+ (org-html-inline-image-p link info))
+ container
+ link))))
+ (and (eq (org-element-map parent 'link 'identity info t) link)
+ (org-export-read-attribute :attr_html parent)))))
+ info))))
+
+(defun org-reveal-link (link desc info)
+ "Transcode a LINK object from Org to Reveal. The result is
+ identical to ox-html expect for image links. When `org-reveal-single-file' is t,
+the result is the Data URIs of the referenced image."
+ (let* ((want-embed-image (and (plist-get info :reveal-single-file)
+ (plist-get info :html-inline-images)
+ (string= "file" (org-element-property :type link))
+ (org-export-inline-image-p
+ link (plist-get info :html-inline-image-rules))))
+ (raw-path (org-element-property :path link))
+ (clean-path (org-reveal--file-url-to-path raw-path))
+ (can-embed-image (and want-embed-image
+ (file-readable-p clean-path))))
+ (if can-embed-image
+ (org-reveal--format-image-data-uri link clean-path info)
+ (if want-embed-image
+ (error "Cannot embed image %s" raw-path)
+ (replace-regexp-in-string "<a href=\"#" "<a href=\"#/slide-"
+ (org-html-link link desc info))))))
+
+(defun org-reveal-latex-environment (latex-env contents info)
+ "Transcode a LaTeX environment from Org to Reveal.
+
+LATEX-ENV is the Org element. CONTENTS is the contents of the environment. INFO is a plist holding contextual information "
+ (setq info (plist-put info :reveal-mathjax t))
+ (let ((attrs (org-export-read-attribute :attr_html latex-env)))
+ (format "<div%s>\n%s\n</div>\n"
+ (if attrs (concat " " (org-html--make-attribute-string attrs)) "")
+ (org-html-latex-environment latex-env contents info))))
+
+(defun org-reveal-plain-list (plain-list contents info)
+ "Transcode a PLAIN-LIST element from Org to Reveal.
+
+CONTENTS is the contents of the list. INFO is a plist holding
+contextual information.
+
+Extract and set `attr_html' to plain-list tag attributes."
+ (let ((tag (case (org-element-property :type plain-list)
+ (ordered "ol")
+ (unordered "ul")
+ (descriptive "dl")))
+ (attrs (org-export-read-attribute :attr_html plain-list)))
+ (format "<%s%s>\n%s\n</%s>"
+ tag
+ (if attrs (concat " " (org-html--make-attribute-string attrs)) "")
+ contents
+ tag
+ )))
+
+(defun org-reveal--build-pre/postamble (type info)
+ "Return document preamble or postamble as a string, or nil."
+ (let ((section (plist-get info (intern (format ":reveal-%s" type))))
+ (spec (org-html-format-spec info)))
+ (when section
+ (let ((section-contents
+ (if (functionp (intern section)) (funcall (intern section) info)
+ ;; else section is a string.
+ (format-spec section spec))))
+ (when (org-string-nw-p section-contents)
+ (org-element-normalize-string section-contents))))))
+
+
+(defun org-reveal-section (section contents info)
+ "Transcode a SECTION element from Org to Reveal.
+CONTENTS holds the contents of the section. INFO is a plist
+holding contextual information."
+ ;; Just return the contents. No "<div>" tags.
+ contents)
+
+(defun org-reveal--using-highlight.js (info)
+ "Check whether highlight.js plugin is enabled."
+ (let ((reveal-plugins (condition-case e
+ (car (read-from-string (plist-get info :reveal-plugins)))
+ (end-of-file nil)
+ (wrong-type-argument nil))))
+ (memq 'highlight (or (and reveal-plugins (listp reveal-plugins) reveal-plugins)
+ org-reveal-plugins))))
+
+(defun org-reveal-src-block (src-block contents info)
+ "Transcode a SRC-BLOCK element from Org to Reveal.
+CONTENTS holds the contents of the item. INFO is a plist holding
+contextual information."
+ (if (org-export-read-attribute :attr_html src-block :textarea)
+ (org-html--textarea-block src-block)
+ (let* ((use-highlight (org-reveal--using-highlight.js info))
+ (lang (org-element-property :language src-block))
+ (caption (org-export-get-caption src-block))
+ (code (if (not use-highlight)
+ (org-html-format-code src-block info)
+ ;; Use our own function for org-export-format-code,
+ ;; since org-html-format-code will wrap line
+ ;; numbers with HTML tags that will be display as
+ ;; part of the code by highlight.js
+ (let* ((num-start (org-export-get-loc src-block info))
+ (code (car (org-export-unravel-code src-block)))
+ (code-length (length (split-string code "\n")))
+ (num-fmt (and num-start
+ (format "%%%ds: "
+ (length (number-to-string (+ code-length
+ num-start)))))))
+ (org-export-format-code
+ (org-html-encode-plain-text code)
+ (lambda (loc line-num ref)
+ (setq loc
+ (concat
+ ;; Add line number, if needed
+ (when num-start (format num-fmt line-num))
+ loc)))
+ num-start))))
+ (frag (org-export-read-attribute :attr_reveal src-block :frag))
+ (code-attribs (or (org-export-read-attribute
+ :attr_reveal src-block :code_attribs) ""))
+ (label (let ((lbl (org-element-property :name src-block)))
+ (if (not lbl) ""
+ (format " id=\"%s\"" lbl))))
+ (klipsify (and org-reveal-klipsify-src
+ (member lang '("javascript" "js" "ruby" "scheme" "clojure" "php" "html"))))
+ (langselector (cond ((or (string= lang "js") (string= lang "javascript")) "selector_eval_js")
+ ((string= lang "clojure") "selector")
+ ((string= lang "python") "selector_eval_python_client")
+ ((string= lang "scheme") "selector_eval_scheme")
+ ((string= lang "ruby") "selector_eval_ruby")
+ ((string= lang "html") "selector_eval_html"))
+ )
+)
+ (if (not lang)
+ (format "<pre %s%s>\n%s</pre>"
+ (or (frag-class frag info) " class=\"example\"")
+ label
+ code)
+ (if klipsify
+ (concat
+ "<iframe style=\"background-color:white;\" height=\"500px\" width= \"100%\" srcdoc='<html><body><pre><code "
+ (if (string= lang "html" )"data-editor-type=\"html\" " "") "class=\"klipse\" "code-attribs ">
+" (if (string= lang "html")
+ (replace-regexp-in-string "'" "'"
+ (replace-regexp-in-string "&" "&"
+ (replace-regexp-in-string "<" "<"
+ (replace-regexp-in-string ">" ">"
+ (cl-letf (((symbol-function 'org-html-htmlize-region-for-paste)
+ #'buffer-substring))
+ (org-html-format-code src-block info))))))
+ (replace-regexp-in-string "'" "'"
+ code)) "
+</code></pre>
+<link rel= \"stylesheet\" type= \"text/css\" href=\"" org-reveal-klipse-css "\">
+<style>
+.CodeMirror { font-size: 2em; }
+</style>
+<script>
+window.klipse_settings = { " langselector ": \".klipse\" };
+</script>
+<script src= \"" org-reveal-klipse-js "\"></script></body></html>
+'>
+</iframe>")
+ (format
+ "<div class=\"org-src-container\">\n%s%s\n</div>"
+ (if (not caption) ""
+ (format "<label class=\"org-src-name\">%s</label>"
+ (org-export-data caption info)))
+ (if use-highlight
+ (format "\n<pre%s%s><code class=\"%s\" %s>%s</code></pre>"
+ (or (frag-class frag info) "")
+ label lang code-attribs code)
+ (format "\n<pre %s%s><code trim>%s</code></pre>"
+ (or (frag-class frag info)
+ (format " class=\"src src-%s\"" lang))
+ label code)
+ )))))))
+
+(defun org-reveal-quote-block (quote-block contents info)
+ "Transcode a QUOTE-BLOCK element from Org to Reveal.
+CONTENTS holds the contents of the block INFO is a plist holding
+contextual information."
+ (format "<blockquote %s>\n%s</blockquote>"
+ (frag-class (org-export-read-attribute :attr_reveal quote-block :frag) info)
+ contents))
+
+
+(defun org-reveal--auto-title-slide-template (info)
+ "Generate the automatic title slide template."
+ (let* ((spec (org-html-format-spec info))
+ (title (org-export-data (plist-get info :title) info))
+ (subtitle (plist-get info :subtitle))
+ (author (cdr (assq ?a spec)))
+ (email (cdr (assq ?e spec)))
+ (date (cdr (assq ?d spec))))
+ (concat
+ (when (and (plist-get info :with-title)
+ (org-string-nw-p title))
+ (concat "<h1 class=\"title\">" title "</h1>"
+ (if-format "<p class=\"subtitle\">%s</p>\n" subtitle)))
+ (when (and (plist-get info :with-author)
+ (org-string-nw-p author))
+ (concat "<h2 class=\"author\">" author "</h2>"))
+ (when (and (plist-get info :with-email)
+ (org-string-nw-p email))
+ (concat "<h2 class=\"email\">" email "</h2>"))
+ (when (and (plist-get info :with-date)
+ (org-string-nw-p date))
+ (concat "<h2 class=\"date\">" date "</h2>"))
+ (when (plist-get info :time-stamp-file)
+ (concat "<p class=\"date\">"
+ (org-html--translate "Created" info)
+ ": "
+ (format-time-string org-html-metadata-timestamp-format)
+ "</p>")))))
+
+(defun org-reveal-template (contents info)
+ "Return complete document string after HTML conversion.
+contents is the transcoded contents string.
+info is a plist holding export options."
+ (concat
+ (format "<!DOCTYPE html>\n<html%s>\n<head>\n"
+ (if-format " lang=\"%s\"" (plist-get info :language)))
+ "<meta charset=\"utf-8\"/>\n"
+ (if-format "<title>%s</title>\n" (org-export-data (plist-get info :title) info))
+ (if-format "<meta name=\"author\" content=\"%s\"/>\n" (plist-get info :author))
+ (if-format "<meta name=\"description\" content=\"%s\"/>\n" (plist-get info :description))
+ (if-format "<meta name=\"keywords\" content=\"%s\"/>\n" (plist-get info :keywords))
+ (org-reveal-stylesheets info)
+ (org-reveal-mathjax-scripts info)
+ (org-reveal--build-pre/postamble 'head-preamble info)
+ (org-element-normalize-string (plist-get info :html-head))
+ (org-element-normalize-string (plist-get info :html-head-extra))
+ "</head>
+<body>\n"
+ (org-reveal--build-pre/postamble 'preamble info)
+ "<div class=\"reveal\">
+<div class=\"slides\">\n"
+ ;; Title slides
+ (let ((title-slide (plist-get info :reveal-title-slide)))
+ (when (and title-slide (not (plist-get info :reveal-subtree)))
+ (let ((title-slide-background (plist-get info :reveal-title-slide-background))
+ (title-slide-background-size (plist-get info :reveal-title-slide-background-size))
+ (title-slide-background-position (plist-get info :reveal-title-slide-background-position))
+ (title-slide-background-repeat (plist-get info :reveal-title-slide-background-repeat))
+ (title-slide-background-transition (plist-get info :reveal-title-slide-background-transition))
+ (title-slide-background-opacity (plist-get info :reveal-title-slide-background-opacity))
+ (title-slide-with-header (plist-get info :reveal-slide-global-header))
+ (title-slide-with-footer (plist-get info :reveal-slide-global-footer)))
+ (concat "<section id=\"sec-title-slide\""
+ (when title-slide-background
+ (concat " data-background=\"" title-slide-background "\""))
+ (when title-slide-background-size
+ (concat " data-background-size=\"" title-slide-background-size "\""))
+ (when title-slide-background-position
+ (concat " data-background-position=\"" title-slide-background-position "\""))
+ (when title-slide-background-repeat
+ (concat " data-background-repeat=\"" title-slide-background-repeat "\""))
+ (when title-slide-background-transition
+ (concat " data-background-transition=\"" title-slide-background-transition "\""))
+ (when title-slide-background-opacity
+ (concat " data-background-opacity=\"" title-slide-background-opacity "\""))
+ ">"
+ (when title-slide-with-header
+ (let ((header (plist-get info :reveal-slide-header)))
+ (when header (format "<div class=\"slide-header\">%s</div>\n" header))))
+ (cond ((eq title-slide nil) nil)
+ ((stringp title-slide) (format-spec title-slide (org-html-format-spec info)))
+ ((eq title-slide 'auto) (org-reveal--auto-title-slide-template info)))
+ "\n"
+ (when title-slide-with-footer
+ (let ((footer (plist-get info :reveal-slide-footer)))
+ (when footer (format "<div class=\"slide-footer\">%s</div>\n" footer))))
+ "</section>\n"))))
+ contents
+ "</div>
+</div>\n"
+ (org-reveal--build-pre/postamble 'postamble info)
+ (org-reveal-scripts info)
+ "</body>
+</html>\n"))
+
+(defun org-reveal-filter-parse-tree (tree backend info)
+ "Do filtering before parsing TREE.
+
+Tree is the parse tree being exported. BACKEND is the export
+back-end used. INFO is a plist-used as a communication channel.
+
+Assuming BACKEND is `reveal'.
+
+Each `attr_reveal' attribute is mapped to corresponding
+`attr_html' attributes."
+ (let ((default-frag-style (plist-get info :reveal-default-frag-style)))
+ (org-element-map tree (remq 'item org-element-all-elements)
+ (lambda (elem) (org-reveal-append-frag elem default-frag-style))))
+ ;; Hint for obsolete options
+ (when (memq t
+ (mapcar
+ (lambda (key) (plist-get info key))
+ '(:reveal-control
+ :reveal-progress
+ :reveal-history
+ :reveal-center
+ :reveal-slide-number
+ :reveal-rolling-links
+ :reveal-keyboard
+ :reveal-overview
+ :reveal-width
+ :reveal-height
+ :reveal-margin
+ :reveal-min-scale
+ :reveal-max-scale
+ :reveal-trans
+ :reveal-speed)))
+ (with-output-to-temp-buffer
+ "* ox-reveal hints *"
+ (princ "
+Note: Options and custom variables for initializing reveal.js are
+obsolete. Use '#+REVEAL_INIT_OPTIONS:' instead to give JS code
+snippet for initializing reveal.js. The following is a such
+example:
+
+#+REVEAL_INIT_OPTIONS: width:1200, height:800, controlsLayout: 'edges'
+
+Obsolete options and variables are listed below:
+
+ | Option | Variable |
+ |-----------------------+-----------------------------|
+ | reveal_control | org-reveal-control |
+ | reveal_progress | org-reveal-progress |
+ | reveal_history | org-reveal-history |
+ | reveal_center | org-reveal-center |
+ | reveal_slide_number | org-reveal-slide-number |
+ | reveal_rolling_links | org-reveal-rolling-links |
+ | reveal_keyboard | org-reveal-keyboard |
+ | reveal_overview | org-reveal-overview |
+ | reveal_width | org-reveal-width |
+ | reveal_height | org-reveal-height |
+ | #+REVEAL_MARGIN | org-reveal-margin |
+ | #+REVEAL_MIN_SCALE | org-reveal-min-scale |
+ | #+REVEAL_MAX_SCALE | org-reveal-max-scale |
+ | #+REVEAL_TRANS | org-reveal-transition |
+ | #+REVEAL_SPEED | org-reveal-transition-speed |
+")))
+ ;; Return the updated tree.
+ tree)
+
+(defun org-reveal--update-attr-html (elem frag default-style &optional frag-index)
+ "Update ELEM's attr_html attribute with reveal's
+fragment attributes."
+ (let ((attr-html (org-element-property :attr_html elem)))
+ (when (and frag (not (string= frag "none")))
+ (push (cond ((string= frag t)
+ (if default-style (format ":class fragment %s" default-style)
+ ":class fragment"))
+ (t (format ":class fragment %s" frag)))
+ attr-html)
+ (when frag-index
+ (push (format ":data-fragment-index %s" frag-index) attr-html)))
+ (org-element-put-property elem :attr_html attr-html)))
+
+(defun org-reveal-append-frag (elem default-style)
+ "Read org-reveal's fragment attribute from ELEM and append
+transformed fragment attribute to ELEM's attr_html plist."
+ (let ((frag (org-export-read-attribute :attr_reveal elem :frag))
+ (frag-index (org-export-read-attribute :attr_reveal elem :frag_idx)))
+ (if frag
+ (cond ((and (string= (org-element-type elem) 'plain-list)
+ (char-equal (string-to-char frag) ?\())
+ (let* ((frag-list (car (read-from-string frag)))
+ (frag-list (if default-style
+ (mapcar (lambda (s)
+ "Replace t with default-style"
+ (if (string= s t) default-style
+ s))
+ frag-list)
+ frag-list))
+ (items (org-element-contents elem))
+ (default-style-list
+ (mapcar (lambda (a) default-style)
+ (number-sequence 1 (length items)))))
+ (if frag-index
+ (mapcar* 'org-reveal--update-attr-html
+ items frag-list default-style-list (car (read-from-string frag-index)))
+ (let* ((last-frag (car (last frag-list)))
+ (tail-list (mapcar (lambda (a) last-frag)
+ (number-sequence (+ (length frag-list) 1)
+ (length items)))))
+ (nconc frag-list tail-list)
+ (mapcar* 'org-reveal--update-attr-html items frag-list default-style-list)))))
+ (t (org-reveal--update-attr-html elem frag default-style frag-index)))
+ elem)))
+
+(defvar client-multiplex nil
+ "used to cause generation of client html file for multiplex")
+
+(defun org-reveal-export-to-html
+ (&optional async subtreep visible-only body-only ext-plist)
+ "Export current buffer to a reveal.js HTML file."
+ (interactive)
+ (let* ((extension (concat "." org-html-extension))
+ (file (org-export-output-file-name extension subtreep))
+ (clientfile (org-export-output-file-name (concat "_client" extension) subtreep)))
+ ; export filename_client HTML file if multiplexing
+ (setq client-multiplex nil)
+ (setq retfile (org-export-to-file 'reveal file
+ async subtreep visible-only body-only ext-plist))
+
+ ; export the client HTML file if client-multiplex is set true
+ ; by previous call to org-export-to-file
+ (if (eq client-multiplex t)
+ (org-export-to-file 'reveal clientfile
+ async subtreep visible-only body-only ext-plist))
+ retfile))
+
+(defun org-reveal-export-to-html-and-browse
+ (&optional async subtreep visible-only body-only ext-plist)
+ "Export current buffer to a reveal.js and browse HTML file."
+ (interactive)
+ (browse-url-of-file (expand-file-name (org-reveal-export-to-html async subtreep visible-only body-only ext-plist))))
+
+(defun org-reveal-export-current-subtree
+ (&optional async subtreep visible-only body-only ext-plist)
+ "Export current subtree to a Reveal.js HTML file."
+ (interactive)
+ (org-narrow-to-subtree)
+ (let ((ret (org-reveal-export-to-html async subtreep visible-only body-only (plist-put ext-plist :reveal-subtree t))))
+ (widen)
+ (message "Obsoleting soon. Use the \"Export scope\" switch instead to utilize parent heading properties.")
+ ret))
+
+;; Generate a heading of ToC for current buffer and write to current
+;; point
+(defun org-reveal-manual-toc (gh-links)
+ (interactive "P")
+ (insert ;; at current point
+ (mapconcat
+ 'identity
+ (org-element-map (org-element-parse-buffer) 'headline
+ (lambda (headline)
+ (let ((title (org-element-property :raw-value headline)))
+ (concat
+ ;; Leading spaces by headline level
+ (make-string (* 2 (org-element-property :level headline)) ?\s)
+ "- [["
+ title
+ "]["
+ title
+ "]]"
+ (when gh-links
+ ;; Add another link to github readme page
+ (concat
+ "([[https://github.com/yjwen/org-reveal#"
+ ;; Follow the github link-naming convension
+ (replace-regexp-in-string
+ ;; remove any non-alphanum character
+ "[.,']"
+ ""
+ (replace-regexp-in-string
+ ;; Any spaces with hyphen
+ " +" "-"
+ (downcase title)))
+ "][gh]])")
+ )))))
+ "\n")))
+;;;###autoload
+(defun org-reveal-publish-to-reveal
+ (plist filename pub-dir)
+ "Publish an org file to Html.
+
+FILENAME is the filename of the Org file to be published. PLIST
+is the property list for the given project. PUB-DIR is the
+publishing directory.
+
+Return output file name."
+ (org-publish-org-to 'reveal filename ".html" plist pub-dir))
+
+;; Register auto-completion for speaker notes.
+(when org-reveal-note-key-char
+ (if (version< (cdr (get 'org-structure-template-alist 'custom-package-version)) "9.2")
+ (add-to-list 'org-structure-template-alist
+ (list org-reveal-note-key-char "#+BEGIN_NOTES\n\?\n#+END_NOTES"))
+ (add-to-list 'org-structure-template-alist
+ (cons org-reveal-note-key-char "notes"))))
+
+(provide 'ox-reveal)
+
+;;; ox-reveal.el ends here
projects / emacsconfig.git / commitdiff