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#+Title: Introduction to Org-Reveal
#+Author: Yujie Wen
#+Email: yjwen.ty@gmail.com
#+REVEAL_INIT_OPTIONS: width:1200, height:800, margin: 0.1, minScale:0.2, maxScale:2.5, transition:'cube'
#+OPTIONS: toc:nil
#+REVEAL_THEME: moon
#+REVEAL_HLEVEL: 2
#+REVEAL_HEAD_PREAMBLE: <meta name="description" content="Org-Reveal Introduction.">
#+REVEAL_POSTAMBLE: <p> Created by yjwen. </p>
#+REVEAL_PLUGINS: (markdown notes)
#+REVEAL_EXTRA_CSS: ./local.css
[[http://melpa.org/#/ox-reveal][file:http://melpa.org/packages/ox-reveal-badge.svg]]
[[http://www.gnu.org/licenses/gpl-3.0.html][http://img.shields.io/:license-gpl3-blue.svg]]
* Table of Contents
Title links are for viewing within org-mode buffer only. *Github
viewers please use the =(gh)= links.*
- [[Table of Contents][Table of Contents]]([[https://github.com/yjwen/org-reveal#table-of-contents][gh]])
- [[Reveal.js and Org-Reveal][Reveal.js and Org-Reveal]]([[https://github.com/yjwen/org-reveal#revealjs-and-org-reveal][gh]])
- [[Requirements and Installation][Requirements and Installation]]([[https://github.com/yjwen/org-reveal#requirements-and-installation][gh]])
- [[Install Reveal.js][Install Reveal.js]]([[https://github.com/yjwen/org-reveal#install-revealjs][gh]])
- [[Install org-reveal from MELPA][Install org-reveal from MELPA]]([[https://github.com/yjwen/org-reveal#install-org-reveal-from-melpa][gh]])
- [[Install org-reveal from GitHub][Install org-reveal from GitHub]]([[https://github.com/yjwen/org-reveal#install-org-reveal-from-github][gh]])
#+REVEAL: split:t
- [[Configuration][Configuration]]([[https://github.com/yjwen/org-reveal#configuration][gh]])
- [[Set the location of Reveal.js][Set the location of Reveal.js]]([[https://github.com/yjwen/org-reveal#set-the-location-of-revealjs][gh]])
- [[Url form for file location][Url form for file location]]([[https://github.com/yjwen/org-reveal#url-form-for-file-location][gh]])
- [[First Try][First Try]]([[https://github.com/yjwen/org-reveal#first-try][gh]])
- [[The HLevel][The HLevel]]([[https://github.com/yjwen/org-reveal#the-hlevel][gh]])
- [[HLevel's Effects on Slides Layout][HLevel's Effects on Slides Layout]]([[https://github.com/yjwen/org-reveal#hlevels-effects-on-slides-layout][gh]])
- [[Configure HLevel's Value][Configure HLevel's Value]]([[https://github.com/yjwen/org-reveal#configure-hlevels-value][gh]])
- [[Force Split][Force Split]]([[https://github.com/yjwen/org-reveal#force-split][gh]])
#+REVEAL: split:t
- [[Select Theme and Transition][Select Theme and Transition]]([[https://github.com/yjwen/org-reveal#select-theme-and-transition][gh]])
- [[Set The Title Slide][Set The Title Slide]]([[https://github.com/yjwen/org-reveal#set-the-title-slide][gh]])
- [[Customize the Title Slide][Customize the Title Slide]]([[https://github.com/yjwen/org-reveal#customize-the-title-slide][gh]])
- [[Set Slide Background][Set Slide Background]]([[https://github.com/yjwen/org-reveal#set-slide-background][gh]])
- [[Single Colored Background][Single Colored Background]]([[https://github.com/yjwen/org-reveal#single-colored-background][gh]])
- [[Single Image Background][Single Image Background]]([[https://github.com/yjwen/org-reveal#single-image-background][gh]])
- [[Repeating Image Background][Repeating Image Background]]([[https://github.com/yjwen/org-reveal#repeating-image-background][gh]])
- [[Title Slide Background Image][Title Slide Background Image]]([[https://github.com/yjwen/org-reveal#title-slide-background-image][gh]])
- [[Background for all slides][Background for all slides]]([[https://github.com/yjwen/org-reveal#background-for-all-slides][gh]])
#+REVEAL: split:t
- [[Slide Size][Slide Size]]([[https://github.com/yjwen/org-reveal#slide-size][gh]])
- [[Slide Numbering][Slide Numbering]]([[https://github.com/yjwen/org-reveal#slide-numbering][gh]])
- [[Slide Header/Footer][Slide Header/Footer]]([[https://github.com/yjwen/org-reveal#slide-header/footer][gh]])
- [[Fragmented Contents][Fragmented Contents]]([[https://github.com/yjwen/org-reveal#fragmented-contents][gh]])
- [[Fragment Styles][Fragment Styles]]([[https://github.com/yjwen/org-reveal#fragment-styles][gh]])
- [[Fragment Index][Fragment Index]]([[https://github.com/yjwen/org-reveal#fragment-index][gh]])
- [[List Fragments][List Fragments]]([[https://github.com/yjwen/org-reveal#list-fragments][gh]])
- [[Data State][Data State]]([[https://github.com/yjwen/org-reveal#data-state][gh]])
#+REVEAL: split:t
- [[Initialization options][Initialization options]]([[https://github.com/yjwen/org-reveal#initialization-options][gh]])
- [[Third-Party Plugins][Third-Party Plugins]]([[https://github.com/yjwen/org-reveal#third-party-plugins][gh]])
- [[By Defining Variable][By Defining Variable]]([[https://github.com/yjwen/org-reveal#by-defining-variable][gh]])
- [[By Local Option Line][By Local Option Line]]([[https://github.com/yjwen/org-reveal#by-local-option-line][gh]])
- [[Highlight Source Code][Highlight Source Code]]([[https://github.com/yjwen/org-reveal#highlight-source-code][gh]])
- [[Using highlight.js][Using highlight.js]]([[https://github.com/yjwen/org-reveal#using-highlightjs][gh]])
- [[Editable Source Code][Editable Source Code]]([[https://github.com/yjwen/org-reveal#editable-source-code][gh]])
- [[MathJax][MathJax]]([[https://github.com/yjwen/org-reveal#mathjax][gh]])
#+REVEAL: split:t
- [[Preamble and Postamble][Preamble and Postamble]]([[https://github.com/yjwen/org-reveal#preamble-and-postamble][gh]])
- [[Generating Pre/Postamble by Emacs-Lisp Functions][Generating Pre/Postamble by Emacs-Lisp Functions]]([[https://github.com/yjwen/org-reveal#generating-pre/postamble-by-emacs-lisp-functions][gh]])
- [[Raw HTML in Slides][Raw HTML in Slides]]([[https://github.com/yjwen/org-reveal#raw-html-in-slides][gh]])
- [[Speaker Notes][Speaker Notes]]([[https://github.com/yjwen/org-reveal#speaker-notes][gh]])
- [[Easy-Template for Speaker Notes][Easy-Template for Speaker Notes]]([[https://github.com/yjwen/org-reveal#easy-template-for-speaker-notes][gh]])
- [[Multiplexing][Multiplexing]]([[https://github.com/yjwen/org-reveal#multiplexing][gh]])
- [[Extra Stylesheets][Extra Stylesheets]]([[https://github.com/yjwen/org-reveal#extra-stylesheets][gh]])
- [[Select Built-In Scripts][Select Built-In Scripts]]([[https://github.com/yjwen/org-reveal#select-built-in-scripts][gh]])
- [[Extra Dependent Script][Extra Dependent Script]]([[https://github.com/yjwen/org-reveal#extra-dependent-script][gh]])
- [[Extra Slide Attribute][Extra Slide Attribute]]([[https://github.com/yjwen/org-reveal#extra-slide-attribute][gh]])
- [[Export into Single File][Export into Single File]]([[https://github.com/yjwen/org-reveal#export-into-single-file][gh]])
- [[Export Current Subtree][Export Current Subtree]]([[https://github.com/yjwen/org-reveal#export-current-subtree][gh]])
#+REVEAL: split:t
- [[Tips][Tips]]([[https://github.com/yjwen/org-reveal#tips][gh]])
- [[Mananging Table of Contents][Mananging Table of Contents]]([[https://github.com/yjwen/org-reveal#mananging-table-of-contents][gh]])
- [[Internal Links][Internal Links]]([[https://github.com/yjwen/org-reveal#internal-links][gh]])
- [[Custom JS][Custom JS]]([[https://github.com/yjwen/org-reveal#custom-js][gh]])
- [[Executable Source Blocks][Executable Source Blocks]]([[https://github.com/yjwen/org-reveal#executable-source-blocks][gh]])
- [[HTML Src Block][HTML Src Block]]([[https://github.com/yjwen/org-reveal#html-src-block][gh]])
- [[Javascript Src Block][Javascript Src Block]]([[https://github.com/yjwen/org-reveal#javascript-src-block][gh]])
- [[Perl Src Block (not klipsified)][Perl Src Block (not klipsified)]]([[https://github.com/yjwen/org-reveal#perl-src-block-(not-klipsified)][gh]])
- [[Properties for Sub-headings][Properties for Sub-headings]]([[https://github.com/yjwen/org-reveal#properties-for-sub-headings][gh]])
- [[My org-reveal presentation among many within the same Org-mode file][My org-reveal presentation among many within the same Org-mode file]]([[https://github.com/yjwen/org-reveal#my-org-reveal-presentation-among-many-within-the-same-org-mode-file][gh]])
- [[Thanks][Thanks]]([[https://github.com/yjwen/org-reveal#thanks][gh]])
* Reveal.js and Org-Reveal
- *Reveal.js* is a tool for creating good-looking HTML presentations,
authored by [[http://hakim.se/][Hakim El Hattab]]. \\
For an example of a reveal.js presentation, see [[http://lab.hakim.se/reveal-js/#/][here]].
- *Org-Reveal* exports your [[http://orgmode.org/][Org]] documents to reveal.js
presentations.\\
With Org-reveal, you can create beautiful presentations with 3D
effects from simple but powerful Org contents.
* Requirements and Installation
- Reveal.js.
- Org-mode.
- ox-reveal.el.
- htmlize.el (optional, for syntax highlighting).
- And, of course, emacs.
** Install Reveal.js
Download Reveal.js packages from [[https://github.com/hakimel/reveal.js/][here]].
Extract Reveal.js folders from the downloaded zip file.
If you do not wish to download reveal.js yourself and would rather get a copy from a CDN,
see the section [[https://github.com/yjwen/org-reveal#set-the-location-of-revealjs][Set the location of Reveal.js]]
** Install org-reveal from MELPA
The easiest way to install org-reveal is to install package
ox-reveal from MELPA.
Please refer to [[http://melpa.org/#/getting-started]] for using MELPA. *Note*: It is suggested to use the [[http://orgmode.org/elpa.html][Org ELPA]] archive in pair
with the ox-reveal packages. Emacs builtin Org-mode package may be
out of date for MELPA's ox-reveal.
** Install org-reveal from GitHub
You can also install the latest developing version of org-reveal directly
from GitHub.
Please download the latest Org-reveal package from [[https://github.com/yjwen/org-reveal][the Org-reveal
GitHub page]]. Or clone the GitHub repository:
#+BEGIN_SRC sh
git clone https://github.com/yjwen/org-reveal.git
#+END_SRC
Copy =ox-reveal.el= to one of your Emacs's ~load-path~, and add the
following statement to your =.emacs= file.
#+BEGIN_SRC lisp
(require 'ox-reveal)
#+END_SRC *Note*: It is suggested to use the Org-mode git repository in pair
with the GitHub org-reveal. Please get the Org-mode git repository
by:
#+BEGIN_SRC sh
$ git clone git://orgmode.org/org-mode.git
#+END_SRC
Follow the [[http://orgmode.org/worg/dev/org-build-system.html][online instruction]] for building and installing Org-mode.
* Configuration
** Set the location of Reveal.js
Org-reveal must know where Reveal.js is on your computer before
exporting Org contents. The location of Reveal.js is the path to
the top directory of the Reveal.js packages, the directory which contains
file *README.md*, but *not* the one that contains the file reveal.js.
The default location is =./reveal.js=, relative to the Org file.
Changing =org-reveal-root= 's value will change the location
globally. For example, add the following statement to your .emacs
file:
#+BEGIN_SRC lisp
(setq org-reveal-root "file:///d:/reveal.js")
#+END_SRC *IMPORTANT*: the absolute path to Reveal.js should be in URL form,
"file:///path_to_reveal.js", as illustrated above. By setting
option =REVEAL_ROOT=, the location is only affected within the Org
file.
#+BEGIN_SRC org
,#+REVEAL_ROOT: file:///d:/reveal.js
#+END_SRC
Set your =REVEAL_ROOT= to the following URL to download reveal.js from
a CDN instead of downloading a local copy.
#+BEGIN_SRC org
,#+REVEAL_ROOT: https://cdn.jsdelivr.net/npm/reveal.js
#+END_SRC
*** Url form for file location
For example if you cloned this repository to your home directory,
this file in Mac OS X would be referred to as
"file:///Users/username/org-reveal/readme.org". This file in
Ubuntu would be "file:///home/username/org-reveal/readme.org" and
in Windows this file would be
"file:///c:/Users/username/org-reveal/readme.org". For more
detail on this standard please refer to
[[http://en.wikipedia.org/wiki/File_URI_scheme]]
** First Try
To load Org-reveal, type "M-x load-library", then type
"ox-reveal".
Now you can export this manual into Reveal.js presentation by
typing "C-c C-e R R".
Open the generated "Readme.html" in your browser and enjoy the
cool slides.
** The HLevel
Org-reveal maps each heading and its contents to one Reveal.js
slide. Since Reveal.js arranges slides into a 2-dimensional matrix,
Org-reveal use a *HLevel* value to decide whether to map headings to horizontal
or vertical slides.
* Headings of level less than or equal to *HLevel* are mapped to horizontal
slides.
* Headings with a deeper level are mapped to vertical slides.
HLevel's default value is 1, means only level 1 headings are arranged
horizontally. Deeper headings are mapped to vertical slides below their
parent level 1 heading.
*** HLevel's Effects on Slides Layout
Assume we have a simple Org file as below:
#+BEGIN_SRC org
,* H1
,* H2
,** H2.1
,*** H2.1.1
,* H3
#+END_SRC
If HLevel is 1, the default value, headings H2.1 and H2.1.1 will
be mapped to vertical slides below the slides of heading H2.
[[./images/hlevel.png]]
If HLevel is changed to 2, slides of heading H2.1 will be changed
to the main horizontal queue, and slides of heading H2.1.1 will be
a vertical slide below it.
[[./images/hlevel2.png]]
*** Configure HLevel's Value
* Change variable =org-reveal-hlevel='s value to set HLevel globally.\\
For example, add the following statement to your =.emacs= file.
#+BEGIN_SRC lisp
(setq org-reveal-hlevel 2)
#+END_SRC
* Setting Org files local HLevel to option =REVEAL_HLEVEL=.
#+BEGIN_SRC org
,#+REVEAL_HLEVEL: 2
#+END_SRC
** Force Split
If one heading has too many things to fit into one slide, you can
split the contents into multiple vertical slides manually, by inserting
#+BEGIN_SRC org
,#+REVEAL: split
#+END_SRC
#+REVEAL: split
Now a new slide begins after =#+REVEAL= keyword.
To repeat the heading title on the split slide, please insert ~#+REVEAL: split:t~ instead.
** Select Theme and Transition
Themes and transition styles are set globally throughout the whole
file by setting options =REVEAL_THEME=, =REVEAL_TRANS=, and =REVEAL_SPEED=.
For an example, please check the heading part of this document.
Available themes can be found in "css/theme/" in the reveal.js directory.
Available transitions are: default|cube|page|concave|zoom|linear|fade|none.
** Set The Title Slide
By default, Org-reveal generates a title slide displaying the
title, the author, the Email, the date and the time-stamp of the
Org document, controlled by Org's [[http://orgmode.org/org.html#Export-settings][export settings]].
To avoid a title slide, please set variable ~org-reveal-title-slide~ to ~nil~, or add ~reveal_title_slide:nil~ to ~#+OPTIONS:~ line.
To restore the default title slide, please set variable ~org-reveal-title-slide~ to ~'auto~.
*** Customize the Title Slide
There are 3 ways t ocustomize the title slide.
1. Set variable ~org-reveal-title-slide~ to a string of HTML markups.
2. Set ~reveal_title_slide~ in the ~#+OPTIONS:~ line to a string of HTML markups.
3. Use one or more option lines ~#+REVEAL_TITLE_SLIDE:~ to specify
the HTML of the title slide.
The following escaping characters can be used to retrieve document
information:
| ~%t~ | Title |
| ~%s~ | Subtitle |
| ~%a~ | Author |
| ~%e~ | Email |
| ~%d~ | Date |
| ~%%~ | Literal % |
** Set Slide Background
Slide background can be set to a color, an image or a repeating image
array by setting heading properties.
*** Single Colored Background
:PROPERTIES:
:reveal_background: #543210
:END:
Set property =reveal_background= to either an RGB color value, or any
supported CSS color format.
#+BEGIN_SRC org
,*** Single Colored Background
:PROPERTIES:
:reveal_background: #123456
:END:
#+END_SRC
*** Single Image Background
:PROPERTIES:
:reveal_background: ./images/whale.jpg
:reveal_background_trans: slide
:END:
Set property =reveal_background= to an URL of background image.
Set property =reveal_background_trans= to =slide= to make background image
sliding rather than fading.
#+BEGIN_SRC org
,*** Single Image Background
:PROPERTIES:
:reveal_background: ./images/whale.jpg
:reveal_background_trans: slide
:END:
#+END_SRC
*** Repeating Image Background
:PROPERTIES:
:reveal_background: ./images/whale.jpg
:reveal_background_size: 200px
:reveal_background_repeat: repeat
:reveal_background_opacity: 0.2
:END:
Resize background image by setting property =reveal_background_size= to a number.
Set property =reveal_background_repeat= to =repeat= to repeat
image on the background, =reveal_background_opacity= for the
background opacity, which is a value of 0-1.
#+BEGIN_SRC org
,*** Repeating Image Background
:PROPERTIES:
:reveal_background: ./images/whale.jpg
:reveal_background_size: 200px
:reveal_background_repeat: repeat
:reveal_background_opacity: 0.2
:END:
#+END_SRC
*** Title Slide Background Image
To set the title slide's background image, please specify the
following options:
* =REVEAL_TITLE_SLIDE_BACKGROUND=: A URL to the background image.
* =REVEAL_TITLE_SLIDE_BACKGROUND_SIZE=: HTML size specification, e.g. ~200px~.
* =REVEAL_TITLE_SLIDE_BACKGROUND_REPEAT=: Set to ~repeat~ to repeat the image.
* =REVEAL_TITLE_SLIDE_BACKGROUND_OPACITY=: Set the background opacity.
*** Background for all slides
You can also configure the background for all slides in the presentation with:
* =REVEAL_DEFAULT_SLIDE_BACKGROUND=
* =REVEAL_DEFAULT_SLIDE_BACKGROUND_SIZE=
* =REVEAL_DEFAULT_SLIDE_BACKGROUND_POSITION=
* =REVEAL_DEFAULT_SLIDE_BACKGROUND_REPEAT=
* =REVEAL_DEFAULT_SLIDE_BACKGROUND_TRANSITION=
Refer to the [[https://github.com/yjwen/org-reveal#set-slide-background][Set slide background section]] for instructions on how to use each
parameter.
** Slide Size
Reveal.js scales slides to best fit the display resolution, but you can
also specify the desired size by settings the option tags =reveal_width=
and =reveal_height=.
The scaling behavior can also be constrained by setting following
options:
* =#+REVEAL_MARGIN:= :: a float number, the factor of empty area
surrounding slide contents.
* =#+REVEAL_MIN_SCALE:= :: a float number, the minimum scaling down
ratio.
* =#+REVEAL_MAX_SCALE:= :: a float number, the maximum scaling up
ratio.
** Slide Numbering
By default, a flatten slide number is showed at the lower-right corner of each slide.
To disable slide numbering, please add ~reveal_slide_number:nil~ to ~#+OPTIONS:~ line.
From Reveal.js 3.1.0, slide numbering can have several custom
formats. To choose one format, please set ~reveal_slide_number~ to
its proper string. For example, ~reveal_slide_number:h/v~.
Supported format string can be found in [[https://github.com/hakimel/reveal.js/#slide-number][Reveal.js manual]]. *NOTE:* ~reveal_sldie_number~ has no effect on the numbering of
headings. To disable the heading number, pleass add ~num:nil~ to
one ~#+OPTIONS~ line.
** Slide Header/Footer
Specify Slide header/footer by =#+REVEAL_SLIDE_HEADER:= and
=#+REVEAL_SLIDE_FOOTER:=. The option content will be put into
divisions of class =slide-header= and =slide-footer=, so you can
control their appearance in custom CSS file(see [[https://github.com/rafadc/org-reveal#extra-stylesheets][Extra Stylesheets]]).
By default header/footer content will only display on content
slides. To show them also on the title and toc slide you can add
~reveal_global_header:t~ and ~reveal_global_footer:t~ to
~#+OPTIONS:~ line.
** Fragmented Contents
Make contents fragmented (show up one-by-one) by setting option
=ATTR_REVEAL= with property ":frag frag-style", as illustrated
below.
#+ATTR_REVEAL: :frag roll-in
Paragraphs can be fragmented.
#+ATTR_REVEAL: :frag roll-in
- Lists can
- be fragmented.
#+ATTR_REVEAL: :frag roll-in
Pictures, tables and many other HTML elements can be fragmented.
*** Fragment Styles
Available fragment styles are:
#+ATTR_REVEAL: :frag t
* grow
* shrink
* roll-in
* fade-out
* highlight-red
* highlight-green
* highlight-blue
* appear
Setting ~:frag t~ will use Reveal.js default fragment style, which
can be overridden by local option ~#+REVEAL_DEFAULT_FRAG_STYLE~ or
global variable ~org-reveal-default-frag-style~.
*** Fragment Index
Fragment sequence can be changed by assigning adding ~:frag_idx~
property to each fragmented element.
#+ATTR_REVEAL: :frag t :frag_idx 3
And, this paragraph shows at last.
#+ATTR_REVEAL: :frag t :frag_idx 2
This paragraph shows secondly.
#+ATTR_REVEAL: :frag t :frag_idx 1
This paragraph shows at first.
*** List Fragments
~#+ATTR_REVEAL: :frag frag-style~ above a list defines fragment
style for the list as a whole.
#+ATTR_REVEAL: :frag grow
1. All items grow.
2. As a whole.
To define fragment styles for every list item, please enumerate
each item's style in a lisp list.
~none~ in the style list will disable fragment for the
corresponding list item.
Custom fragment sequence should also be enumerated for each list
item.
#+REVEAL: split:t
An example:
#+BEGIN_SRC org
,#+ATTR_REVEAL: :frag (grow shrink roll-in fade-out none) :frag_idx (4 3 2 1 -)
* I will grow.
* I will shrink.
* I rolled in.
* I will fade out.
* I don't fragment.
#+END_SRC
#+ATTR_REVEAL: :frag (grow shrink roll-in fade-out none) :frag_idx (4 3 2 1 -)
* I will grow.
* I will shrink.
* I rolled in.
* I will fade out.
* I don't fragment.
#+REVEAL: split:t
When there is ~:frag_idx~ specified, insufficient fragment style
list will be extended by its last element. So a ~:frag (appear)~
assigns each item of a list the ~appear~ fragment style.
#+BEGIN_SRC org
,#+ATTR_REVEAL: :frag (appear)
* I appear.
* I appear.
* I appear.
#+END_SRC
#+ATTR_REVEAL: :frag (appear)
* I appear.
* I appear.
* I appear.
** Data State
:PROPERTIES:
:reveal_data_state: alert
:END:
Set property =reveal_data_state= to headings to change this slide's
display style, as illustrated above.
Available data states are: alert|blackout|soothe.
** Initialization options
Use ~#+REVEAL_INIT_OPTIONS` to give JS snippet for initialize
reveal.js with different options. Check [[https://github.com/hakimel/reveal.js/#configuration][reveal.js document]] for
supported options. Check the head part of this document for an
example.
** Third-Party Plugins
Reveal.js is also extensible through third-party plugins. Org-reveal
now includes a mechanism to load these as well, either for all org buffers
by defining variable, or for local org buffer by setting option line.
*** By Defining Variable
Store the names and loading instructions for each plugin in the
customizable variable ~org-reveal-external-plugins~. This variable is
an associative list. The first element of each Assoc cell is a symbol
-- the name of the plugin -- and the second is the string of the code
for enabling the plugin. The string can have ONE optional ~%s~, which
will be replaced by `reveal-root`.
So, this second element should have the form ~"{src:
\"%srelative/path/toplugin/from/reveal/root.js\"}~. If you need the
async or callback parameters, include those too. Ox-reveal will add
the plugin to the dependencies parameter when Reveal is initialized.
*** By Local Option Line
Specify the plugin by option line ~#+REVEAL_EXTERNAL_PLUGINS: string
of code~. Similiar to the global plugin definition, the string of code
can have one optional ~%s~ to be replaced by ~reveal-root~.
** Highlight Source Code
There are two ways to highlight source code.
1. Use your Emacs theme
2. Use highlight.js
To Use your Emacs theme, please make sure ~htmlize.el~ is
installed. Then no more setup is necessary.
Below is an example of highlighted lisp code from org-reveal.
#+BEGIN_SRC lisp
(defun org-reveal--read-file (file)
"Return the content of file"
(with-temp-buffer
(insert-file-contents-literally file)
(buffer-string)))
#+END_SRC
If you saw odd indentation, please set variable =org-html-indent=
to =nil= and export again.
*** Using highlight.js
You can also use [[https://highlightjs.org][highlight.js]], by adding ~highlight~ to the Reveal.js
plugin list.
#+BEGIN_SRC org
,#+REVEAL_PLUGINS: (highlight)
#+END_SRC
The default highlighting theme is ~zenburn.css~ brought with
Reveal.js. To use other themes, please specify the CSS file name by
~#+REVEAL_HIGHLIGHT_CSS~ or the variable ~org-reveal-highlight-css~.
The "%r" in the given CSS file name will be replaced by Reveal.js'
URL.
** Editable Source Code
It is now possible to embed code blocks in a codemirror instance in order to edit code during a presentation. At present, this capacity is turned on or off at time export using these defcustoms:
- ~org-reveal-klipsify-src~
- ~org-reveal-klipse-css~
- ~org-reveal-klipse-js~
This feature is turned off by default and needs to be switched on with ~org-reveal-klipsify-src~. At present code editing is supported in javacript, clojure, php, ruby, scheme, and python only.
** MathJax
:PROPERTIES:
:CUSTOM_ID: my-heading
:END:
${n! \over k!(n-k)!} = {n \choose k}$
LateX equation are rendered in native HTML5 contents.
*IMPORTANT*: Displaying equations requires internet connection to
[[http://mathjax.org/][mathjax.org]] or local MathJax installation. For local MathJax
installation, set option =REVEAL_MATHJAX_URL= to the URL pointing
to the local MathJax location. *Note*: Option ~reveal_mathjax~ is obsolete now. Org-reveal
exports necessary MathJax configurations when there is Latex
equation found.
** Preamble and Postamble
You can define preamble and postamble contents which will not be
shown as slides, but will be exported into the body part of the
generated HTML file, at just before and after the slide contents.
Change preamble and postamble contents globally by setting variable =org-reveal-preamble= and =org-reveal-postamble=.
Change preamble and postamble contents locally by setting options =REVEAL_PREAMBLE= and =REVEAL_POSTAMBLE=, as illustrated at the
heading part of this document.
To add custom contents into HTML =<head>= parts, set contents to
variable =org-reveal-head-preamble= or option =REVEAL_HEAD_PREAMBLE=.
*** Generating Pre/Postamble by Emacs-Lisp Functions
If the contents of pre/postamble is the name of an evaluated
Emacs-Lisp function, which must accept an argument of Org-mode
info and return a string, the returned string will be taken
as pre/postamble contents.
So you can embed the Emacs-Lisp function as an Org-Babel source
block and mark it to be evaluated when exporting the document.
** Raw HTML in Slides
Besides the Org contents, you can embed raw HTML contents
into slides by placing a =#+REVEAL_HTML= keyword.
The famous cat jump fail:
#+REVEAL_HTML: <iframe width="420" height="315" src="https://www.youtube.com/embed/Awf45u6zrP0" frameborder="0" allowfullscreen></iframe>
** Speaker Notes
Reveal.js supports speaker notes, which are displayed in a separate
browser window. Pressing 's' on slide's windows will pop up a window
displaying the current slide, the next slide and the speaker notes on the current
slide.
Org-reveal recognize texts between =#+BEGIN_NOTES= and =#+END_NOTES=
as speaker notes. See the example below.
#+BEGIN_SRC org
,* Heading 1
Some contents.
,#+BEGIN_NOTES
Enter speaker notes here.
,#+END_NOTES
#+END_SRC
To skip exporting speaker notes, please set variable
`org-reveal-ignore-speaker-notes` to `t`.
#+REVEAL: split
Speaker notes requires the ~notes~ plug-in. If you changed default
plug-in setting by specifying =#+REVEAL_PLUGINS= or by setting
variable =org-reveal-plugins=, please make sure ~notes~ is in the
plug-in list to enable speaker notes.
#+REVEAL: split
Due to a bug in Reveal.js, sometimes the speaker notes window
shows only blank screens. A workaround to this issue is to put
the presentation HTML file into the Reveal.js root directory and
reopen it in the browser.
*** Easy-Template for Speaker Notes
Org-reveal registers 'n' as the key for speaker notes easy-template.
So you can press '<' followed by 'n' and then press TAB, the ~#+BEGIN_NOTES~
and ~#+END_NOTES~ pair is inserted automatically.
Customize ~org-reveal-note-key-char~ to change the default key
'n'. set it to nil will forbid the auto-completion for speaker notes.
** Multiplexing
Reveal.js supports multiplexing, which allows your audience to view
the slides of the presentation you are controlling on their own phone, tablet
or laptop. As the master presentation navigates the slides, all client
presentations will update in real time. See a demo at
http://revealjs.jit.su/.
You can enable multiplexing for your slide generation by including the
following options:
#+BEGIN_SRC org
#+REVEAL_MULTIPLEX_ID: [Obtained from the socket.io server. ]
#+REVEAL_MULTIPLEX_SECRET: [Obtained from socket.io server. Gives the master control of the presentation.]
#+REVEAL_MULTIPLEX_URL: http://revealjs.jit.su:80 [Location of socket.io server]
#+REVEAL_MULTIPLEX_SOCKETIO_URL: http://cdnjs.cloudflare.com/ajax/libs/socket.io/0.9.10/socket.io.min.js
#+REVEAL_PLUGINS: ([any other plugins you are using] multiplex)
#+END_SRC
You must generate unique values for the =REVEAL_MULTIPLEX_ID= and =REVEAL_MULTIPLEX_SECRET= options, obtaining these from the socket.io server
you are using.
If you include these options in your .org file, reveal-org will enable your
.html file as the master file for multiplexing and will generate a file named
in the form =[filename]_client.html= in the same directory as the client
.html file. Provide your audience with a link to the client file to allow
them to track your presentation on their own device.
** Extra Stylesheets
Set =REVEAL_EXTRA_CSS= to a stylesheet file path in order to load extra custom
styles after loading a theme.
#+BEGIN_SRC org
,#+REVEAL_EXTRA_CSS: url-to-custom-stylesheet.css
#+END_SRC
** Select Built-In Scripts
Set option =REVEAL_PLUGINS= or variable =org-reveal-plugins= to a
lisp list to select built-in scripts.
Available built-in scripts are:
classList/markdown/highlight/zoom/notes/search/remotes.
Default built-ins are: classList/markdown/highlight/zoom/notes/multiplex.
The following examples select /markdown/ and /highlight/ only.
#+BEGIN_SRC org
,#+REVEAL_PLUGINS: (markdown highlight)
#+END_SRC
** Extra Dependent Script
Set =REVEAL_EXTRA_JS= to the url of extra reveal.js dependent
script if necessary.
#+BEGIN_SRC org
,#+REVEAL_EXTRA_JS: url-to-custom-script.js
#+END_SRC
** Extra Slide Attribute
Set property =reveal_extra_attr= to headings to add any necessary attributes
to slides.
** Export into Single File
By setting option =reveal_single_file= to ~t~, images and necessary
Reveal.js scripts will be embedded into the exported HTML file, to make
a portable HTML. Please note that remote images will /not/ be included in the
single file, so presentations with remote images will still require an Internet
connection.
Attention: This needs locally available reveal.js files!
#+BEGIN_SRC org
,#+OPTIONS: reveal_single_file:t
#+END_SRC
When exporting into single file, functions provided by Reveal.js
libraries will be disabled due to limitation, including PDF export,
Markdown support, zooming, speaker notes and remote control.
Code highlight by highlight.js is also disabled. But *code
highlight by Emacs is not effected.*
** Export Current Subtree
Use menu entry " C-c C-e R S" to export only current subtree,
without the title slide and the table of content, for a quick preview
of your current edition.
* Tips
** Mananging Table of Contents
It is well often the automatic "Table of Contents" is too large to fit
into one slide. One wordaround is to disable the automatic TOC and
generate one manually, which can be split into multiple
slides. Org-reveal provides a helper function to insert a TOC to the
current org buffer. Type ~M-x org-reveal-manual-toc~ to invoke it.
To disable the automatic TOC, add =toc:nil= to =#+OPTIONS=
#+BEGIN_SRC org
,#+OPTIONS: toc:nil
#+END_SRC
** Internal Links
Reveal.js supports only jump between slides, but not between
elements on slides. Thus, we can only link to headlines in an Org
document.
You can create links pointing to a headline's text, or its
custom-id, as the examples below:
* [[Tips]].
* [[#my-heading][Heading]] with a =CUSTOM_ID= property.
** Custom JS
To pass custom JS code to ~Reveal.initialize~, state the code by ~#+REVEAL_INIT_SCRIPT~ (multiple statements are concatenated) or by
custom variable ~org-reveal-init-script~.
** Executable Source Blocks
To allow live execution of code in some languages, enable the klipse plugin by setting ~org-reveal-klipsify-src~ to non-nil. Src blocks with the languages ~js~, ~clojure~, ~html~, ~python~, ~ruby~, ~scheme~, ~php~ will be executed with output shown in a console-like environment. See the source code of ~org-reveal-src-block~ for more details.
*** HTML Src Block
#+BEGIN_SRC html
<h1 class="whatever">hello, what's your name</h1>
#+END_SRC
*** Javascript Src Block
#+BEGIN_SRC js
console.log("success");
var x='string using single quote';
x
#+END_SRC
*** Perl Src Block (not klipsified)
#+BEGIN_SRC perl
I don't know perl!
#+END_SRC
** Properties for Sub-headings
If you want to have multiple reveal presentations in a single Org-mode
file, you might want to switch from file-based properties like:
#+BEGIN_SRC org
,#+REVEAL_HLEVEL: 2
,#+OPTIONS: transition: 'cube'
,#+REVEAL_THEME: moon
#+END_SRC
to properties of sub-headings like:
#+BEGIN_SRC org
:PROPERTIES:
:EXPORT_REVEAL_HLEVEL: 2
:EXPORT_REVEAL_TRANS: cube
:EXPORT_REVEAL_THEME: moon
:END:
#+END_SRC
This way, each org-reveal presentation can have its own settings. An example heading with corresponding settings would look like:
#+BEGIN_SRC org
* My org-reveal presentation among many within the same Org-mode file
:PROPERTIES:
:reveal_overview: t
:EXPORT_AUTHOR: Test Author
:EXPORT_DATE: 2018-01-01
:EXPORT_TITLE: My Title
:EXPORT_EMAIL: Test@example.com
:EXPORT_OPTIONS: num:nil toc:nil reveal_keyboard:t reveal_overview:t
:EXPORT_REVEAL_HLEVEL: 3
:EXPORT_REVEAL_MARGIN: 200
:END:
#+END_SRC
* Thanks
Courtesy to:
#+ATTR_REVEAL: :frag roll-in
The powerful Org-mode,
#+ATTR_REVEAL: :frag roll-in
the impressive Reveal.js
#+ATTR_REVEAL: :frag roll-in
and the precise MathJax
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