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ox-ioslide.el
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ox-ioslide.el
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;;; ox-ioslide.el --- Export org-mode to Google I/O HTML5 slide.
;; Copyright (c) 2013-2015 Yen-Chin, Lee. (coldnew) <coldnew.tw@gmail.com>
;; Copyright (c) 2015 Kuan, Yen. (kuanyui) <azazabc123@gmail.com>
;;
;; Author: coldnew <coldnew.tw@gmail.com>
;; Keywords: html presentation
;; X-URL: http://github.com/coldnew/org-ioslide
;; Version: 0.2
;; Package-Requires: ((emacs "24.1") (org "8.0") (cl-lib "0.5") (f "0.17.2") (makey "0.3"))
;; This file is not part of GNU Emacs.
;; 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, or (at your option)
;; any later version.
;;
;; This program is distributed in the hope that it will be useful,
;; but WITHOUT ANY WARRANTY; without even the implied warranty of
;; MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
;; GNU General Public License for more details.
;;
;; You should have received a copy of the GNU General Public License
;; along with this program; if not, write to the Free Software
;; Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
;;; Commentary:
;;; About ox-ioslide.el
;; ox-ioslide.el is an org-mode exporter to export org file to Google I/O 2013
;; style slides.
;; DEMO site: http://coldnew.github.io/org-ioslide
;;; Installation:
;; If you have `melpa` and `emacs24` installed, simply type:
;;
;; M-x package-install ox-ioslide
;;
;; In your .emacs
;;
;; (require 'ox-ioslide)
;;
;; For more information, please see `README.org'
;;
;;; Code:
(eval-when-compile (require 'cl-lib))
(require 'ox-html)
(require 'f)
(defvar org-ioslide-path
(file-name-directory (or load-file-name (buffer-file-name)))
"Get the absolute path of this file. Don't change this manually.")
(defgroup org-export-ioslide nil
"Options for exporting Org mode files to HTML5 slide."
:tag "Org Export to Google I/O HTML5 slide"
:group 'org-export)
;;; User Configuration Variables
(defcustom org-ioslide-config-file
"slide_config.js"
"Slide config file for Google I/O slide."
:group 'org-export-ioslide
:type 'string)
(defcustom org-ioslide-hlevel 1
"The minimum level of headings that should be grouped into
vertical slides."
:group 'org-export-ioslide
:type 'integer)
(defvar org-ioslide--current-footnote-list nil)
(defvar org-ioslide--footnote-count-in-slide 0)
;;; Define Back-End
(org-export-define-derived-backend 'ioslide 'html
:menu-entry
'(?i "Export to Google I/O HTML slide."
((?H "As HTML buffer" org-ioslide-export-as-html)
(?h "As HTML file" org-ioslide-export-to-html))
(?o "As HTML file and open"
(lambda (a s v b)
(if a (org-ioslide-export-to-html t s v b)
(org-open-file (org-ioslide-export-to-html nil s v b))))))
:filters-alist '((:filter-parse-tree . org-ioslide-generate-config-file))
:options-alist
'(
;; Overwrite the HTML_HEAD defined in ox-html.el
(:html-head "HTML_HEAD" nil "" newline)
;; Configs that will be generated in slide_config.js
;; subtitle
(:subtitle "SUBTITLE" nil nil t)
;; useBuilds, Default: true, False will turn off slide animation builds.
(:use-builds "USE_BUILDS" nil "true" t)
;; usePrettify, Default: true
(:use-prettify "USE_PRETTIFY" nil "true" t)
;; enableSlideAreas, Default: true. False turns off the click
;; areas on either slide of the slides.
(:enable-slideareas "ENABLE_SLIDEAREAS" nil "true" t)
;; enableTouch, Default: true. If touch support should enabled.
;; Note: the device must support touch.
(:enable-touch "ENABLE_TOUCH" nil "true" t)
;; favIcon
(:fav-icon "FAVICON" nil "images/emacs-icon.png" t)
(:hash-tag "HASHTAG" nil "" t)
;; TODO: fonts
;; Author information
(:company "COMPANY" nil nil t)
(:google-plus "GOOGLE_PLUS" nil nil t)
(:twitter "TWITTER" nil nil t)
(:www "WWW" nil nil t)
(:github "GITHUB" nil nil t)
;; Enable user add #+THEME: io2013 to select theme from theme/css/io2013.css
;; FIXME: currently the io2013.css is not work, we use theme/css/default.css by default
(:theme "THEME" nil nil t)
;; Other configs
;; Use MathJax, Default: true. False will remove MathJax from
;; current slide to save space (when exporting); True will
;; re-install it again.
(:use-mathjax "USE_MATHJAX" nil "true" t)
;; Google analytics: 'UA-XXXXXXXX-1
(:analytics "ANALYTICS" nil nil t)
(:logo "LOGO" nil "" t)
(:icon "ICON" nil "images/emacs-icon.png" t)
(:hlevel "HLEVEL" nil nil t)
;; TODO: idea ?
;; Hide the default title slide
;; (:hide-title-slide "HIDE_TITLE_SLIDE" nil nil t)
)
:translate-alist
'((headline . org-ioslide-headline)
(section . org-ioslide-section)
(template . org-ioslide-template)
(center-block . org-ioslide-center-block)
(src-block . org-ioslide-src-block)
(quote-block . org-ioslide-quote-block)
(verse-block . org-ioslide-verse-block)
(table-cell . org-ioslide-table-cell)
(export-block . org-ioslide-export-block)
(plain-list . org-ioslide-plain-list)
(paragraph . org-ioslide-paragraph)
(inner-template . org-ioslide-inner-template)
(footnote-definition . org-ioslide-footnote-definition)
(footnote-reference . org-ioslide-footnote-reference)
)
)
;;; Internal Functions
(defun org-ioslide--plist-get-string (info key)
(let ((r (plist-get info key)))
(if (stringp r) r (or (car r) ""))))
(defun org-ioslide-close-element (element attr body)
(format "<%s %s>\n%s\n</%s>" element attr body element))
(defun org-ioslide-close-element* (element attr body)
"What is this?!"
(format "</%s>\n%s\n<%s %s>\n" element body element attr))
(defun org-ioslide--copy-resource ()
"Copy needed resource to current path."
;; TODO: make user use their own template instead of force copy
;; FIXME: do not copy image folder ?
(mapc (lambda (dir)
(copy-directory (f-join org-ioslide-path dir) dir))
'("js/" "images/" "theme/")))
(defun org-ioslide-check-resource ()
"Check js/slides.js exist or not, if not exist, re-fetch resource."
(if (not (file-exists-p "js/slides.js"))
(org-ioslide--copy-resource)))
(defun org-ioslide-generate-small-icon-css (icon-path hash-tag)
"Generate theme/css/small-icon.css to overwrite style.
(The small icon at the left bottom corner)"
(progn
(save-excursion
(with-temp-file "theme/css/small-icon.css"
(insert "slides > slide:not(.nobackground):before {
background: url(../../" icon-path ") no-repeat 0 50%;
font-size: 12pt;
content: \"" hash-tag "\";
position: absolute;
bottom: 20px;
left: 60px;
-moz-background-size: 30px 30px;
-o-background-size: 30px 30px;
-webkit-background-size: 30px 30px;
background-size: 30px 30px;
padding-left: 40px;
height: 30px;
line-height: 1.9;
}")))
""))
(defun org-ioslide-generate-config-file (text back-end info)
(let ((file-name org-ioslide-config-file))
(save-excursion
(with-temp-file file-name
(insert
(concat
"var SLIDE_CONFIG = {
// Slide Settings
settings: {
"
;; title
(format
" title: '%s', \n" (org-ioslide--plist-get-string info :title))
;; subtitle
(format
" subtitle: '%s', \n" (org-ioslide--plist-get-string info :subtitle))
;; useBuilds
(format
" useBuilds: %s, " (org-ioslide--plist-get-string info :use-builds))
"// Default: true. False will turn off slide animation builds. \n"
;; usePrettify
(format
" usePrettify: %s, " (org-ioslide--plist-get-string info :use-prettify))
"// Default: true \n"
;; enableSlideAreas
(format
" enableSlideAreas: %s, " (org-ioslide--plist-get-string info :enable-slideareas))
"// Default: true. False turns off the click areas on either slide of the slides.\n"
;; enableTouch
(format
" enableTouch: %s, " (org-ioslide--plist-get-string info :enable-touch))
"// Default: true. If touch support should enabled. Note: the device must support touch.\n"
;; favIcon
(format
" favIcon: '%s', \n" (org-ioslide--plist-get-string info :fav-icon))
;; TODO: fonts
" fonts: [
'Open Sans:regular,semibold,italic,italicsemibold',
'Source Code Pro'
],\n"
" }, \n \n"
;; Author information
" // Author information
presenters: [{\n"
;; name
(format
" name: '%s', \n" (org-ioslide--plist-get-string info :author))
;; company
(format
" company: '%s', \n" (org-ioslide--plist-get-string info :company))
;; google plus
(format
" gplus: '%s', \n" (org-ioslide--plist-get-string info :google-plus))
;; twitter
(format
" twitter: '%s', \n" (org-ioslide--plist-get-string info :twitter))
;; www
(format
" www: '%s', \n" (org-ioslide--plist-get-string info :www))
;; github
(format
" github: '%s', \n" (org-ioslide--plist-get-string info :github))
" }]
};"
))))))
;;; Transcode Functions
(defun org-ioslide-get-hlevel (info)
"Get HLevel value safely.
If option \"HTML5SLIDE_HLEVEL\" is set, retrieve integer value from it,
else get value from custom variable `org-ioslide-hlevel'."
(let ((hlevel-str (plist-get info :hlevel)))
(if hlevel-str (string-to-number hlevel-str)
org-ioslide-hlevel)))
;;;; Center Block
(defun org-ioslide-center-block (center-block contents info)
"Transcode a CENTER-BLOCK element from Org to HTML.
CONTENTS holds the contents of the block. INFO is a plist
holding contextual information."
(format
"<article class=\"flexbox vcenter\">\n%s</article>" contents))
;;;; Note Block
(defun org-ioslide-export-block (export-block contents info)
"Transocde a EXPORT-BLOCK element from Org to ioslide.
CONTENTS is nil. NFO is a plist holding contextual information."
(if (string= (org-element-property :type export-block) "NOTES")
(concat
"<aside class=\"note\">\n <section>\n"
(org-element-property :value export-block)
"</section>\n</aside>\n")
(org-html-export-block export-block contents info)))
;;;; Quote Block
(defun org-ioslide-quote-block (quote-block contents info)
"Transcode a QUOTE-BLOCK element from Org to HTML.
CONTENTS holds the contents of the block. INFO is a plist
holding contextual information."
(let* ((parent (org-export-get-parent-headline quote-block))
(slide-prop (org-element-property :SLIDE parent))
(attributes (org-export-read-attribute :attr_html quote-block))
(class (plist-get attributes :class))
(--make-sign (function
(lambda (string)
(replace-regexp-in-string
"^ *\\(ȁ[34];\\)\\(.+\\)\\(<br */>\\|\n\\)"
"<span class='float-right'>\\1\\2</span>\\3" string)))))
(if (and class (string-match "notes?" class))
(format "<aside class=\"note\">
<section>
%s
</section>
</aside>
" contents)
(if (and slide-prop
(string-match "segue" slide-prop))
;; [FIXME] different sign rendering under Firefox and Chrome...
(format "<q>\n%s</q>"
(replace-regexp-in-string
"<br>\n *<span" "<span"
(replace-regexp-in-string
"</?p>" ""
(replace-regexp-in-string
"</?p>\n* *<p>" "<br>"
(funcall --make-sign contents)))))
(format "<blockquote>\n%s</blockquote>"
;; Align "-- Name" to right side.
(save-match-data
(replace-regexp-in-string
"</span>\n</p>"
"</span><br />\n</p>"
(funcall --make-sign contents))))))))
;;; Verse Block
(defun org-ioslide-verse-block (verse-block contents info)
"Transcode a VERSE-BLOCK element from Org to HTML.
CONTENTS is verse block contents. INFO is a plist holding
contextual information."
;; Align "-- Name" to right side.
(replace-regexp-in-string "^ * \\(?: \\)+\\(ȁ[34];\\)\\(.+?\\)\\(<br */>\\|\n\\)"
"<span class='float-right'>\\1\\2</span>\\3"
(org-html-verse-block verse-block contents info)))
;;;; Paragraph
(defun org-ioslide-paragraph (paragraph contents info)
"Transcode a PARAGRAPH element from Org to HTML.
CONTENTS is the contents of the paragraph, as a string. INFO is
the plist used as a communication channel."
;; Fix multibyte language like chinese will be automatically add
;; some space since org-mode will transpose auto-fill-mode's space
;; to newline char.
(let ((fix-contents
(replace-regexp-in-string
(concat "\\([[:multibyte:]]\\) *\n *\\([[:multibyte:]]\\)") "\\1\\2" contents)))
;; Send modify data to org-html-paragraph
(org-html-paragraph paragraph fix-contents info)))
;;;; Src Block
(defun org-ioslide--encode-src-text (code)
"Encode source code to plane text, if source contains <b> or </b>,
make it translate to html tags."
(replace-regexp-in-string
"<b>" "<b>"
(replace-regexp-in-string
"</b>" "</b>"
(org-html-encode-plain-text code))))
(defun org-ioslide--src-block (src-block contents info)
"Transcode a SRC-BLOCK element from Org to HTML.
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 ((lang (org-element-property :language src-block))
(caption (org-export-get-caption src-block))
(code
;; If not use-prettify, use org-html's method
;; to renderd src block
(if (string= "true" (plist-get info :use-prettify))
(org-ioslide--encode-src-text (car (org-export-unravel-code src-block)))
(org-html-format-code src-block info)))
(label (let ((lbl (org-element-property :name src-block)))
(if (not lbl) ""
(format " id=\"%s\""
(org-export-get-reference lbl info))))))
(if (not lang)
;; Use org-html-src-block to genterate HTML code.
(org-html-src-block src-block contents info)
;; Use prettyprint to generate source block
(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)))
(format "\n<pre class=\"prettyprint\" data-lang=\"%s\"%s>\n%s</pre>\n" lang label code))
))))
(defun org-ioslide-src-block (src-block contents info)
"Transcode a SRC-BLOCK element from Org to HTML.
If #+USE_PRETTIFY is `true' use org-ioslide--src-block to render the code block.
Else use org-html-src-block to convert source block to html."
(org-ioslide--src-block src-block contents info))
;;;; Google Analytics
(defun org-ioslide-google-analytics (info)
(let ((user-id (plist-get info :analytics)))
(if (null user-id)
""
(format
(concat "<script>\n"
"var _gaq = _gaq || []; \n"
"_gaq.push(['_setAccount', '%s']);\n"
"_gaq.push(['_trackPageview']); \n"
"(function() {
var ga = document.createElement('script'); ga.type = 'text/javascript'; ga.async = true;
ga.src = ('https:' == document.location.protocol ? 'https://ssl' : 'http://www') + '.google-analytics.com/ga.js';
var s = document.getElementsByTagName('script')[0]; s.parentNode.insertBefore(ga, s);
})();
"
"</script>\n"
) user-id))))
;;;; headline
(defun org-ioslide-headline (headline contents info)
"Transcode a HEADLINE element from Org to Google I/O slides.
CONTENTS holds the contents of the headline. INFO is a plist
holding contextual information."
;; First call org-html-headline to get the formatted HTML contents.
;; Then add enclosing <article> tags to mark slides.
(setq contents (or contents ""))
(let* ((numberedp (org-export-numbered-headline-p headline info))
(level (org-export-get-relative-level headline info))
(text (org-export-data (org-element-property :title headline) info))
(todo (and (plist-get info :with-todo-keywords)
(let ((todo (org-element-property :todo-keyword headline)))
(and todo (org-export-data todo info)))))
(todo-type (and todo (org-element-property :todo-type headline)))
(tags (and (plist-get info :with-tags)
(org-export-get-tags headline info)))
(priority (and (plist-get info :with-priority)
(org-element-property :priority headline)))
;; Create the headline text.
(full-text (if (fboundp 'org-html-format-headline--wrap)
(org-html-format-headline--wrap headline info)
(org-html-headline headline "" info))))
(cond
;; Case 1: This is a footnote section: ignore it.
((org-element-property :footnote-section-p headline) nil)
;; Case 2. This is a deep sub-tree: export it as a list item.
;; Also export as items headlines for which no section
;; format has been found.
((org-export-low-level-p headline info)
;; Build the real contents of the sub-tree.
(let* ((type (if numberedp 'ordered 'unordered))
(itemized-body (org-html-format-list-item
contents type nil info nil full-text)))
(concat
(and (org-export-first-sibling-p headline info)
(org-ioslide-begin-plain-list type))
itemized-body
(and (org-export-last-sibling-p headline info)
(org-ioslide-end-plain-list type)))))
;; Case 3. Standard headline. Export it as a section.
(t
(let* ((section-number (mapconcat 'number-to-string
(org-export-get-headline-number
headline info) "-"))
(ids (remove 'nil
(list (org-element-property :CUSTOM_ID headline)
(concat "sec-" section-number)
(org-element-property :ID headline))))
(level1 (+ level (1- org-html-toplevel-hlevel)))
(hlevel (org-ioslide-get-hlevel info))
(first-content (car (org-element-contents headline))))
(concat
;; Stop previous slide.
;; FIXME: This will make slide has more </slide> element
(if (or (/= level 1)
(not (org-export-first-sibling-p headline info)))
"</slide>\n")
(org-ioslide-close-element
(org-ioslide--container headline info)
;; container class
(org-ioslide--container-class headline info)
;; body
(format "%s%s%s"
;; aside
(org-ioslide--aside headline info)
;; title
(org-ioslide--title headline info)
;; When there is no section, pretend there is an empty
;; one to get the correct <div class="outline- ...>
;; which is needed by `org-info.js'.
(if (not (eq (org-element-type first-content) 'section))
(concat (org-html-section first-content "" info)
"")
contents)
))
))))))
(defun org-ioslide--container (headline info)
"Return the top container of ioslide."
"slide")
(defun org-ioslide--container-class (headline info)
"Special handler for segue slide class."
(let* ((class (org-element-property :SLIDE headline))
(fill-image (org-element-property :FILL headline))
(segue-p (or (string-match "segue" (format "%s" class) nil))))
(format
"id=\"%s\" %s %s"
;; id
(or (org-element-property :CUSTOM_ID headline)
(concat "sec-" (mapconcat 'number-to-string
(org-export-get-headline-number headline info)
"-")))
(if (or segue-p class fill-image)
(format "class=\"%s %s %s\""
(if fill-image "fill" "") class "nobackground") "")
(if (or segue-p fill-image)
(format "style=\"background-image: url(%s)\"" fill-image) "")
)))
(defun org-ioslide--title (headline info)
(let* ((title (format "%s " (or (org-element-property :TITLE headline) "")))
(slide-prop (format "%s" (org-element-property :SLIDE headline)))
(title-class (replace-regexp-in-string "\\<hide\\>" "" title))
(hgroup-class (org-element-property :HGROUP headline)))
(if (or (string-match "hide" title)
(string-match "thank-you-slide" slide-prop))
""
(format
"<hgroup class=\"%s\">
<h2 class=\"%s\">%s</h2>
<h3>%s</h3>
</hgroup>\n"
;; class
(or hgroup-class "")
;; headline text.
(or title-class "")
(if (fboundp 'org-html-format-headline--wrap)
(org-html-format-headline--wrap headline info)
(org-html-headline headline "" info))
;; subtitle
(or (org-element-property :SUBTITLE headline) "")))))
(defun org-ioslide--aside (headline info)
(let* ((slide-class (format "%s" (org-element-property :SLIDE headline)))
(segue-p (or (string-match "segue" slide-class) nil)))
(if (< 0 (string-bytes slide-class))
;; icon
(if segue-p
(format
"<aside class=\"gdbar %s\"><img src=\"%s\"></aside>"
(or (org-element-property :ASIDE headline) "")
;; get ICON from property, if not exist get ICON from info
(or (org-element-property :ICON headline)
(plist-get info :icon) "")
) "")
"")))
(defun org-ioslide-section (section contents info)
"Transcode a SECTION element from Org to HTML.
CONTENTS holds the contents of the section. INFO is a plist
holding contextual information."
;; Just return the contents. No "<div>" tags.
;; contents
(let ((parent (org-export-get-parent-headline section)))
;; Before first headline: no container, just return CONTENTS.
(if (not parent) contents
;; Get div's class and id references.
(let* ((class-num (+ (org-export-get-relative-level parent info)
(1- org-html-toplevel-hlevel)))
(section-number
(mapconcat
'number-to-string
(org-export-get-headline-number parent info) "-")))
(org-ioslide-close-element
"article"
(format "class=\"%s\" id=\"text-%s\""
(or (org-element-property :ARTICLE parent) "")
(or (org-element-property :CUSTOM_ID parent) section-number))
(if (string-match "thank-you-slide"
(format "%s" (org-element-property :SLIDE parent)))
;; Thank you slide
(format
"<h2>
<p>%s</p>
</h2>
<br>
<p class=\"auto-fadein\" data-config-contact>
</p>"
(org-export-data (org-element-property :title parent) info))
;; Normal content
(format "%s\n%s"
(or contents "")
(org-ioslide--footer-from-footnote))
))))))
;; Footnotes
(defun org-ioslide--footer-from-footnote ()
"Generate <footer> for footnotes in a single slide page."
(if org-ioslide--current-footnote-list
(prog1 (concat
"<footer class=\"source\">\n"
(mapconcat #'identity (reverse org-ioslide--current-footnote-list) "\n")
"\n</footer>")
;; clean list & footnote count
(setq org-ioslide--current-footnote-list nil)
(setq org-ioslide--footnote-count-in-slide 0)
)
""))
(defun org-ioslide-footnote-reference (footnote-reference contents info)
"Transcode a FOOTNOTE-REFERENCE element from Org to HTML (<footer class='source'>).
CONTENTS is nil. INFO is a plist holding contextual information."
(concat
(cond
;; Do nothing if footnote has already been defined.
((not (org-export-footnote-first-reference-p footnote-reference info))
"")
;; Do nothing if reference is within another footnote
;; reference, footnote definition or table cell.
((cl-loop for parent in (org-export-get-genealogy footnote-reference)
thereis (memq (org-element-type parent)
'(footnote-reference footnote-definition table-cell)))
"")
;; Otherwise, add it into org-ioslide--current-footnote-list
(t
(let ((def (org-export-get-footnote-definition footnote-reference info)))
(cl-incf org-ioslide--footnote-count-in-slide)
(push
;; [FIXME] `replace-regexp' as ugly workaround because I don't
;; know how to redefine the back-end for footnote-definition
(replace-regexp-in-string "<p class=\"footpara\">"
(format "<p class=\"footpara\">%s. " org-ioslide--footnote-count-in-slide)
(org-trim (org-export-data def info)))
org-ioslide--current-footnote-list)
;; Add number as <sup>
(format "<sup>%s</sup>" org-ioslide--footnote-count-in-slide)
)))))
(defun org-ioslide-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."
contents
)
;;;; Table Cell (support for "highlight" class)
(defun org-ioslide-table-cell (table-cell contents info)
"Transcode a TABLE-CELL element from Org to HTML.
CONTENTS is nil. INFO is a plist used as a communication
channel."
(let* ((table-row (org-export-get-parent table-cell))
(table (org-export-get-parent-table table-cell))
(cell-attrs
(if (not org-html-table-align-individual-fields) ""
(format " class=\"%s%s\""
(org-export-table-cell-alignment table-cell info)
(if (and (stringp contents)
(string-prefix-p "* " contents))
(progn (setq contents (substring contents 2))
" highlight")
"")
))))
(when (or (not contents) (string= "" (org-trim contents)))
(setq contents " "))
(cond
((and (org-export-table-has-header-p table info)
(= 1 (org-export-table-row-group table-row info)))
(concat "\n" (format (car org-html-table-header-tags) "col" cell-attrs)
contents (cdr org-html-table-header-tags)))
((and org-html-table-use-header-tags-for-first-column
(zerop (cdr (org-export-table-cell-address table-cell info))))
(concat "\n" (format (car org-html-table-header-tags) "row" cell-attrs)
contents (cdr org-html-table-header-tags)))
(t (concat "\n" (format (car org-html-table-data-tags) cell-attrs)
contents (cdr org-html-table-data-tags))))))
;; Plain List
;; FIXME: Maybe arg1 is not needed because <li value="20"> already sets
;; the correct value for the item counter
(defun org-ioslide-begin-plain-list (type &optional class arg1)
"Insert the beginning of the HTML list depending on TYPE.
When ARG1 is a string, use it as the start parameter for ordered
lists."
(if class
;; quotes should be removed from "\"build fade\"", so:
(setq class
(format " class=\"%s\""
(replace-regexp-in-string "[\"']" "" class)))
(setq class ""))
(cl-case type
(ordered
(format "<ol%s%s>"
class
(if arg1 (format " start=\"%d\"" arg1) "")))
(unordered (format "<ul%s>" class))
(descriptive (format "<dl%s>" class))))
(defun org-ioslide-end-plain-list (type)
"Insert the end of the HTML list depending on TYPE."
(cl-case type
(ordered "</ol>")
(unordered "</ul>")
(descriptive "</dl>")))
(defun org-ioslide-plain-list (plain-list contents info)
"Transcode a PLAIN-LIST element from Org to HTML.
CONTENTS is the contents of the list. INFO is a plist holding
contextual information."
(let* ((type (org-element-property :type plain-list))
(attributes (org-export-read-attribute :attr_html plain-list))
(class (plist-get attributes :class)))
(format "%s\n%s%s"
(org-ioslide-begin-plain-list type class)
contents (org-ioslide-end-plain-list type))))
;;; Template
(defun org-ioslide--build-logo-slide (info)
(let ((logo-file (plist-get info :logo)))
(if (< 0 (string-width logo-file))
(format
"<slide class=\"logoslide nobackground\">
<article class=\"flexbox vcenter\">
<span><img src=\"%s\"></span>
</article>
</slide>\n"
logo-file))))
(defun org-ioslide--build-title-slide (info)
(format
"<slide class=\"title-slide segue nobackground\">
<aside class=\"gdbar\"><img src=\"%s\"></aside>
<!-- The content of this hgroup is replaced programmatically through the slide_config.json. -->
<hgroup class=\"auto-fadein\">
<h1 data-config-title><!-- populated from slide_config.json --></h1>
<h2 data-config-subtitle><!-- populated from slide_config.json --></h2>
<p data-config-presenter><!-- populated from slide_config.json --></p>
</hgroup>
</slide>
"
(plist-get info :icon)))
(defun org-ioslide--build-meta-info (info)
"Return meta tags for exported document.
INFO is a plist used as a communication channel."
(let ((protect-string
(lambda (str)
(replace-regexp-in-string
"\"" """ (org-html-encode-plain-text str))))
(author (and (plist-get info :with-author)
(let ((auth (plist-get info :author)))
(and auth
;; Return raw Org syntax, skipping non
;; exportable objects.
(org-element-interpret-data
(org-element-map auth
(cons 'plain-text org-element-all-objects)
'identity info))))))
(description (plist-get info :description))
(keywords (plist-get info :keywords))
(charset (or (and org-html-coding-system
(fboundp 'coding-system-get)
(coding-system-get org-html-coding-system
'mime-charset))
"utf-8")))
(concat
"<title></title>\n"
(when (plist-get info :time-stamp-file)
(format-time-string
(concat "<!-- " org-html-metadata-timestamp-format " -->\n")))
(format
(org-html-close-tag "meta" " charset=\"%s\"" info) charset)
"\n"
(format
(org-html-close-tag "meta" " htto-equiv=\"%s\" content=\"%s\"" info) "X-UA-Compatible" "chrome=1")
"\n"
(org-html-close-tag "meta" " name=\"generator\" content=\"Org-mode with org-ioslide\"" info)
"\n"
(if (org-string-nw-p author)
(org-html-close-tag "meta"
(format " name=\"author\" content=\"%s\""
(funcall protect-string author))
info))
"\n"
(if (org-string-nw-p description)
(org-html-close-tag "meta"
(format " name=\"description\" content=\"%s\"\n"
(funcall protect-string description))
info))
"\n"
(if (org-string-nw-p keywords)
(org-html-close-tag "meta"
(format " name=\"keywords\" content=\"%s\""
(funcall protect-string keywords))
info))
"\n")))
(defun org-ioslide--build-stylesheets (info)
"Return the HTML contents for declaring ioslide stylesheets."
(concat
(org-html-close-tag "meta"
"name=\"apple-mobile-web-app-capable\" content=\"yes\""
info)
"\n"
(org-html-close-tag "link"
(format "rel=\"stylesheet\" media=\"all\" href=\"theme/css/%s.css\"" (or (plist-get info :theme) "default"))
info)
"\n"
(org-html-close-tag "link"
"rel=\"stylesheet\" media=\"only screen and (max-device-width: 480px)\" href=\"theme/css/phone.css\""
info)
"\n"
(org-html-close-tag "link"
"rel=\"stylesheet\" media=\"all\" href=\"theme/css/small-icon.css\""
info)
;; [FIXME: ugly workaround] Generate theme/css/small-icon.css.
(org-ioslide-generate-small-icon-css (org-ioslide--plist-get-string info :fav-icon)
(org-ioslide--plist-get-string info :hash-tag))
"\n"
"<base target=\"_blank\"> <!-- This amazingness opens all links in a new tab. -->\n"
"<script data-main=\"js/slides\" src=\"js/require-1.0.8.min.js\"></script>"
"\n"))
(defun org-ioslide--build-head (info)
"Return information for the <head>..</head> of the HTML output.
INFO is a plist used as a communication channel."
(org-element-normalize-string
(concat
(org-element-normalize-string (plist-get info :html-head))
(org-element-normalize-string (plist-get info :html-head-extra))
(when (and (plist-get info :html-htmlized-css-url)
(eq org-html-htmlize-output-type 'css))
(org-html-close-tag "link"
(format " rel=\"stylesheet\" href=\"%s\" type=\"text/css\""
(plist-get info :html-htmlized-css-url))
info)))))
(defun org-ioslide--install-mathjax (info)
"If '#+USE_MATHJAX: true' is set (default), install MathJax and enable it.
If '#+USE_MATHJAX: false' is set, remove MathJax directory to
save disk space."
(if (string= "true" (org-ioslide--plist-get-string info :use-mathjax))
(progn
;; Check if MathJax installed
(if (not (file-exists-p "js/mathjax"))
(copy-directory (concat org-ioslide-path "js/mathjax") "js/mathjax"))
"\n<script src=\"js/mathjax/MathJax.js?config=TeX-AMS-MML_HTMLorMML,local/local\" type=\"text/javascript\"></script>\n")
(progn
(if (file-exists-p "js/mathjax")
(delete-directory "js/mathjax" t))
"")
)
)
(defun org-ioslide-template (contents info)
"Return complete document string after HTML conversion.
contents is the transoded contents string.
info is a plist holding export options."
(concat
"<!DOCTYPE html>
<html>
<head>
"
;; Create meta info
(org-ioslide--build-meta-info info)
;; Other meta info.... well, I don't know what they do.....
"<!--<meta name=\"viewport\" content=\"width=device-width, initial-scale=1.0, minimum-scale=1.0\">-->\n"
"<!--<meta name=\"viewport\" content=\"width=device-width, initial-scale=1.0\">-->\n"
"<!--This one seems to work all the time, but really small on ipad-->\n"
"<!--<meta name=\"viewport\" content=\"initial-scale=0.4\">-->\n"
;; Import stylesheet from ioslide
(org-ioslide--build-stylesheets info)
;; html head
(org-ioslide--build-head info)
"
<script src=\"js/jquery-1.7.1.min.js\" type=\"text/javascript\"></script>
"
;; MathJax
(org-ioslide--install-mathjax info)
"</head>
<body style=\"opacity: 0\">
"
"<slides class=\"layout-widescreen\">\n"
;; Logo Slide
(org-ioslide--build-logo-slide info)
;; Title Slide
(org-ioslide--build-title-slide info)
;; Slide contents
contents
"<slide class=\"backdrop\"></slide>\n"
"</slides> \n"
;; Google Analytics
(org-ioslide-google-analytics info)
"<!--[if IE]>
<script src=\"http://ajax.googleapis.com/ajax/libs/chrome-frame/1/CFInstall.min.js\"></script>
<script>CFInstall.check({mode: 'overlay'});</script>
<![endif]-->
"
"</body> \n
</html>\n"
))
;;; End-user functions
;;;###autoload
(defun org-ioslide-export-as-html
(&optional async subtreep visible-only body-only ext-plist)
"Export current buffer to an HTML buffer.
Export is done in a buffer named \"*Org HTML5 Slide Export*\", which
will be displayed when `org-export-show-temporary-export-buffer'
is non-nil."
(interactive)
(let ((outbuf (org-export-to-buffer
'ioslide "*Org Google I/O HTML5 Slide Export*"
subtreep visible-only body-only ext-plist))
(org-export-coding-system org-html-coding-system))
;; Set major mode.
(with-current-buffer outbuf (set-auto-mode t))
(when org-export-show-temporary-export-buffer
(switch-to-buffer-other-window outbuf)
;; Indent html buffer to make debug more easy
(delete-trailing-whitespace)
(indent-region (point-min) (point-max))
(untabify (point-min) (point-max)))))
;;;###autoload
(defun org-ioslide-export-to-html
(&optional async subtreep visible-only body-only ext-plist)
"Export current buffer to a Google ioslide HTML5 slide HTML file."
(interactive)
(let* ((extension (concat "." org-html-extension))
(file (org-export-output-file-name extension subtreep))
(org-export-coding-system org-html-coding-system))
;; Check resource and re-fetch it
(org-ioslide-check-resource)
;; export to html use ioslide backend
(org-export-to-file
'ioslide file subtreep visible-only body-only ext-plist)))