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# Created by https://www.toptal.com/developers/gitignore/api/node
# Edit at https://www.toptal.com/developers/gitignore?templates=node
### Node ###
# Logs
logs
*.log
npm-debug.log*
yarn-debug.log*
yarn-error.log*
lerna-debug.log*
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# Diagnostic reports (https://nodejs.org/api/report.html)
report.[0-9]*.[0-9]*.[0-9]*.[0-9]*.json
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# Coverage directory used by tools like istanbul
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*.lcov
# nyc test coverage
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build/Release
# Dependency directories
node_modules/
jspm_packages/
# Snowpack dependency directory (https://snowpack.dev/)
web_modules/
# TypeScript cache
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.stylelintcache
# Microbundle cache
.rpt2_cache/
.rts2_cache_cjs/
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# Optional REPL history
.node_repl_history
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*.tgz
# Yarn Integrity file
.yarn-integrity
# dotenv environment variable files
.env
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# parcel-bundler cache (https://parceljs.org/)
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# Next.js build output
.next
out
# Nuxt.js build / generate output
.nuxt
dist
# Gatsby files
.cache/
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# vuepress v2.x temp and cache directory
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### Node Patch ###
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Copyright (C) 2011-2024 Hakim El Hattab, http://hakim.se, and reveal.js contributors
Permission is hereby granted, free of charge, to any person obtaining a copy
of this software and associated documentation files (the "Software"), to deal
in the Software without restriction, including without limitation the rights
to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
copies of the Software, and to permit persons to whom the Software is
furnished to do so, subject to the following conditions:
The above copyright notice and this permission notice shall be included in
all copies or substantial portions of the Software.
THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
THE SOFTWARE.

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<p align="center">
<a href="https://revealjs.com">
<img src="https://hakim-static.s3.amazonaws.com/reveal-js/logo/v1/reveal-black-text-sticker.png" alt="reveal.js" width="500">
</a>
<br><br>
<a href="https://github.com/hakimel/reveal.js/actions"><img src="https://github.com/hakimel/reveal.js/workflows/tests/badge.svg"></a>
<a href="https://slides.com/"><img src="https://s3.amazonaws.com/static.slid.es/images/slides-github-banner-320x40.png?1" alt="Slides" width="160" height="20"></a>
</p>
reveal.js is an open source HTML presentation framework. It enables anyone with a web browser to create beautiful presentations for free. Check out the live demo at [revealjs.com](https://revealjs.com/).
The framework comes with a powerful feature set including [nested slides](https://revealjs.com/vertical-slides/), [Markdown support](https://revealjs.com/markdown/), [Auto-Animate](https://revealjs.com/auto-animate/), [PDF export](https://revealjs.com/pdf-export/), [speaker notes](https://revealjs.com/speaker-view/), [LaTeX typesetting](https://revealjs.com/math/), [syntax highlighted code](https://revealjs.com/code/) and an [extensive API](https://revealjs.com/api/).
---
Want to create reveal.js presentation in a graphical editor? Try <https://slides.com>. It's made by the same people behind reveal.js.
---
### Sponsors
Hakim's open source work is supported by <a href="https://github.com/sponsors/hakimel">GitHub sponsors</a>. Special thanks to:
<div align="center">
<table>
<td align="center">
<a href="https://workos.com/?utm_campaign=github_repo&utm_medium=referral&utm_content=revealjs&utm_source=github">
<div>
<img src="https://user-images.githubusercontent.com/629429/151508669-efb4c3b3-8fe3-45eb-8e47-e9510b5f0af1.svg" width="290" alt="WorkOS">
</div>
<b>Your app, enterprise-ready.</b>
<div>
<sub>Start selling to enterprise customers with just a few lines of code. Add Single Sign-On (and more) in minutes instead of months.</sup>
</div>
</a>
</td>
</table>
</div>
---
### Getting started
- 🚀 [Install reveal.js](https://revealjs.com/installation)
- 👀 [View the demo presentation](https://revealjs.com/demo)
- 📖 [Read the documentation](https://revealjs.com/markup/)
- 🖌 [Try the visual editor for reveal.js at Slides.com](https://slides.com/)
- 🎬 [Watch the reveal.js video course (paid)](https://revealjs.com/course)
---
<div align="center">
MIT licensed | Copyright © 2011-2024 Hakim El Hattab, https://hakim.se
</div>

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/**
* Layout helpers.
*/
// Stretch an element vertically based on available space
.reveal .stretch,
.reveal .r-stretch {
max-width: none;
max-height: none;
}
.reveal pre.stretch code,
.reveal pre.r-stretch code {
height: 100%;
max-height: 100%;
box-sizing: border-box;
}
// Text that auto-fits its container
.reveal .r-fit-text {
display: inline-block; // https://github.com/rikschennink/fitty#performance
white-space: nowrap;
}
// Stack multiple elements on top of each other
.reveal .r-stack {
display: grid;
}
.reveal .r-stack > * {
grid-area: 1/1;
margin: auto;
}
// Horizontal and vertical stacks
.reveal .r-vstack,
.reveal .r-hstack {
display: flex;
img, video {
min-width: 0;
min-height: 0;
object-fit: contain;
}
}
.reveal .r-vstack {
flex-direction: column;
align-items: center;
justify-content: center;
}
.reveal .r-hstack {
flex-direction: row;
align-items: center;
justify-content: center;
}
// Naming based on tailwindcss
.reveal .items-stretch { align-items: stretch; }
.reveal .items-start { align-items: flex-start; }
.reveal .items-center { align-items: center; }
.reveal .items-end { align-items: flex-end; }
.reveal .justify-between { justify-content: space-between; }
.reveal .justify-around { justify-content: space-around; }
.reveal .justify-start { justify-content: flex-start; }
.reveal .justify-center { justify-content: center; }
.reveal .justify-end { justify-content: flex-end; }

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@media print {
html:not(.print-pdf) {
overflow: visible;
width: auto;
height: auto;
body {
margin: 0;
padding: 0;
overflow: visible;
}
}
html:not(.print-pdf) .reveal {
background: #fff;
font-size: 20pt;
.controls,
.state-background,
.progress,
.backgrounds,
.slide-number {
display: none !important;
}
p, td, li {
font-size: 20pt!important;
color: #000;
}
h1,h2,h3,h4,h5,h6 {
color: #000!important;
height: auto;
line-height: normal;
text-align: left;
letter-spacing: normal;
}
h1 { font-size: 28pt !important; }
h2 { font-size: 24pt !important; }
h3 { font-size: 22pt !important; }
h4 { font-size: 22pt !important; font-variant: small-caps; }
h5 { font-size: 21pt !important; }
h6 { font-size: 20pt !important; font-style: italic; }
a:link,
a:visited {
color: #000 !important;
font-weight: bold;
text-decoration: underline;
}
ul, ol, div, p {
visibility: visible;
position: static;
width: auto;
height: auto;
display: block;
overflow: visible;
margin: 0;
text-align: left !important;
}
pre,
table {
margin-left: 0;
margin-right: 0;
}
pre code {
padding: 20px;
}
blockquote {
margin: 20px 0;
}
.slides {
position: static !important;
width: auto !important;
height: auto !important;
left: 0 !important;
top: 0 !important;
margin-left: 0 !important;
margin-top: 0 !important;
padding: 0 !important;
zoom: 1 !important;
transform: none !important;
overflow: visible !important;
display: block !important;
text-align: left !important;
perspective: none;
perspective-origin: 50% 50%;
}
.slides section {
visibility: visible !important;
position: static !important;
width: auto !important;
height: auto !important;
display: block !important;
overflow: visible !important;
left: 0 !important;
top: 0 !important;
margin-left: 0 !important;
margin-top: 0 !important;
padding: 60px 20px !important;
z-index: auto !important;
opacity: 1 !important;
page-break-after: always !important;
transform-style: flat !important;
transform: none !important;
transition: none !important;
}
.slides section.stack {
padding: 0 !important;
}
.slides section:last-of-type {
page-break-after: avoid !important;
}
.slides section .fragment {
opacity: 1 !important;
visibility: visible !important;
transform: none !important;
}
.r-fit-text {
white-space: normal !important;
}
section img {
display: block;
margin: 15px 0px;
background: rgba(255,255,255,1);
border: 1px solid #666;
box-shadow: none;
}
section small {
font-size: 0.8em;
}
.hljs {
max-height: 100%;
white-space: pre-wrap;
word-wrap: break-word;
word-break: break-word;
font-size: 15pt;
}
.hljs .hljs-ln-numbers {
white-space: nowrap;
}
.hljs td {
font-size: inherit !important;
color: inherit !important;
}
}
}

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/**
* This stylesheet is used to print reveal.js
* presentations to PDF.
*
* https://revealjs.com/pdf-export/
*/
html.reveal-print {
* {
-webkit-print-color-adjust: exact;
}
& {
width: 100%;
height: 100%;
overflow: visible;
}
body {
margin: 0 auto !important;
border: 0;
padding: 0;
float: none !important;
overflow: visible;
}
/* Remove any elements not needed in print. */
.nestedarrow,
.reveal .controls,
.reveal .progress,
.reveal .playback,
.reveal.overview,
.state-background {
display: none !important;
}
.reveal pre code {
overflow: hidden !important;
}
.reveal {
width: auto !important;
height: auto !important;
overflow: hidden !important;
}
.reveal .slides {
position: static;
width: 100% !important;
height: auto !important;
zoom: 1 !important;
pointer-events: initial;
left: auto;
top: auto;
margin: 0 !important;
padding: 0 !important;
overflow: visible;
display: block;
perspective: none;
perspective-origin: 50% 50%;
}
.reveal .slides .pdf-page {
position: relative;
overflow: hidden;
z-index: 1;
page-break-after: always;
}
.reveal .slides .pdf-page:last-of-type {
page-break-after: avoid;
}
.reveal .slides section {
visibility: visible !important;
display: block !important;
position: absolute !important;
margin: 0 !important;
padding: 0 !important;
box-sizing: border-box !important;
min-height: 1px;
opacity: 1 !important;
transform-style: flat !important;
transform: none !important;
}
.reveal section.stack {
position: relative !important;
margin: 0 !important;
padding: 0 !important;
page-break-after: avoid !important;
height: auto !important;
min-height: auto !important;
}
.reveal img {
box-shadow: none;
}
/* Slide backgrounds are placed inside of their slide when exporting to PDF */
.reveal .backgrounds {
display: none;
}
.reveal .slide-background {
display: block !important;
position: absolute;
top: 0;
left: 0;
width: 100%;
height: 100%;
z-index: auto !important;
}
/* Display slide speaker notes when 'showNotes' is enabled */
.reveal.show-notes {
max-width: none;
max-height: none;
}
.reveal .speaker-notes-pdf {
display: block;
width: 100%;
height: auto;
max-height: none;
top: auto;
right: auto;
bottom: auto;
left: auto;
z-index: 100;
}
/* Layout option which makes notes appear on a separate page */
.reveal .speaker-notes-pdf[data-layout="separate-page"] {
position: relative;
color: inherit;
background-color: transparent;
padding: 20px;
page-break-after: always;
border: 0;
}
/* Display slide numbers when 'slideNumber' is enabled */
.reveal .slide-number-pdf {
display: block;
position: absolute;
font-size: 14px;
visibility: visible;
}
/* This accessibility tool is not useful in PDF and breaks it visually */
.aria-status {
display: none;
}
}

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## Dependencies
Themes are written using Sass to keep things modular and reduce the need for repeated selectors across files. Make sure that you have the reveal.js development environment installed before proceeding: https://revealjs.com/installation/#full-setup
## Creating a Theme
To create your own theme, start by duplicating a ```.scss``` file in [/css/theme/source](https://github.com/hakimel/reveal.js/blob/master/css/theme/source). It will be automatically compiled from Sass to CSS (see the [gulpfile](https://github.com/hakimel/reveal.js/blob/master/gulpfile.js)) when you run `npm run build -- css-themes`.
Each theme file does four things in the following order:
1. **Include [/css/theme/template/mixins.scss](https://github.com/hakimel/reveal.js/blob/master/css/theme/template/mixins.scss)**
Shared utility functions.
2. **Include [/css/theme/template/settings.scss](https://github.com/hakimel/reveal.js/blob/master/css/theme/template/settings.scss)**
Declares a set of custom variables that the template file (step 4) expects. Can be overridden in step 3.
3. **Override**
This is where you override the default theme. Either by specifying variables (see [settings.scss](https://github.com/hakimel/reveal.js/blob/master/css/theme/template/settings.scss) for reference) or by adding any selectors and styles you please.
4. **Include [/css/theme/template/theme.scss](https://github.com/hakimel/reveal.js/blob/master/css/theme/template/theme.scss)**
The template theme file which will generate final CSS output based on the currently defined variables.

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/**
* Beige theme for reveal.js.
*
* Copyright (C) 2011-2012 Hakim El Hattab, http://hakim.se
*/
// Default mixins and settings -----------------
@import "../template/mixins";
@import "../template/settings";
// ---------------------------------------------
// Include theme-specific fonts
@import url(./fonts/league-gothic/league-gothic.css);
@import url(https://fonts.googleapis.com/css?family=Lato:400,700,400italic,700italic);
// Override theme settings (see ../template/settings.scss)
$mainColor: #333;
$headingColor: #333;
$headingTextShadow: none;
$backgroundColor: #f7f3de;
$linkColor: #8b743d;
$linkColorHover: lighten( $linkColor, 20% );
$selectionBackgroundColor: rgba(79, 64, 28, 0.99);
$heading1TextShadow: 0 1px 0 #ccc, 0 2px 0 #c9c9c9, 0 3px 0 #bbb, 0 4px 0 #b9b9b9, 0 5px 0 #aaa, 0 6px 1px rgba(0,0,0,.1), 0 0 5px rgba(0,0,0,.1), 0 1px 3px rgba(0,0,0,.3), 0 3px 5px rgba(0,0,0,.2), 0 5px 10px rgba(0,0,0,.25), 0 20px 20px rgba(0,0,0,.15);
$overlayElementBgColor: 0, 0, 0;
$overlayElementFgColor: 240, 240, 240;
// Background generator
@mixin bodyBackground() {
@include radial-gradient( rgba(247,242,211,1), rgba(255,255,255,1) );
}
// Change text colors against dark slide backgrounds
@include dark-bg-text-color(#fff);
// Theme template ------------------------------
@import "../template/theme";
// ---------------------------------------------

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/**
* Black compact & high contrast reveal.js theme, with headers not in capitals.
*
* By Peter Kehl. Based on black.(s)css by Hakim El Hattab, http://hakim.se
*
* - Keep the source similar to black.css - for easy comparison.
* - $mainFontSize controls code blocks, too (although under some ratio).
*/
// Default mixins and settings -----------------
@import "../template/mixins";
@import "../template/settings";
// ---------------------------------------------
// Include theme-specific fonts
@import url(./fonts/source-sans-pro/source-sans-pro.css);
// Override theme settings (see ../template/settings.scss)
$backgroundColor: #000000;
$mainColor: #fff;
$headingColor: #fff;
$mainFontSize: 42px;
$mainFont: 'Source Sans Pro', Helvetica, sans-serif;
$headingFont: 'Source Sans Pro', Helvetica, sans-serif;
$headingTextShadow: none;
$headingLetterSpacing: normal;
$headingTextTransform: uppercase;
$headingFontWeight: 600;
$linkColor: #42affa;
$linkColorHover: lighten( $linkColor, 15% );
$selectionBackgroundColor: lighten( $linkColor, 25% );
$heading1Size: 2.5em;
$heading2Size: 1.6em;
$heading3Size: 1.3em;
$heading4Size: 1.0em;
// Change text colors against light slide backgrounds
@include light-bg-text-color(#000);
// Theme template ------------------------------
@import "../template/theme";
// ---------------------------------------------

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/**
* Black theme for reveal.js. This is the opposite of the 'white' theme.
*
* By Hakim El Hattab, http://hakim.se
*/
// Default mixins and settings -----------------
@import "../template/mixins";
@import "../template/settings";
// ---------------------------------------------
// Include theme-specific fonts
@import url(./fonts/source-sans-pro/source-sans-pro.css);
// Override theme settings (see ../template/settings.scss)
$backgroundColor: #191919;
$mainColor: #fff;
$headingColor: #fff;
$mainFontSize: 42px;
$mainFont: 'Source Sans Pro', Helvetica, sans-serif;
$headingFont: 'Source Sans Pro', Helvetica, sans-serif;
$headingTextShadow: none;
$headingLetterSpacing: normal;
$headingTextTransform: uppercase;
$headingFontWeight: 600;
$linkColor: #42affa;
$linkColorHover: lighten( $linkColor, 15% );
$selectionBackgroundColor: rgba( $linkColor, 0.75 );
$heading1Size: 2.5em;
$heading2Size: 1.6em;
$heading3Size: 1.3em;
$heading4Size: 1.0em;
// Change text colors against light slide backgrounds
@include light-bg-text-color(#222);
// Theme template ------------------------------
@import "../template/theme";
// ---------------------------------------------

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/**
* Blood theme for reveal.js
* Author: Walther http://github.com/Walther
*
* Designed to be used with highlight.js theme
* "monokai_sublime.css" available from
* https://github.com/isagalaev/highlight.js/
*
* For other themes, change $codeBackground accordingly.
*
*/
// Default mixins and settings -----------------
@import "../template/mixins";
@import "../template/settings";
// ---------------------------------------------
// Include theme-specific fonts
@import url(https://fonts.googleapis.com/css?family=Ubuntu:300,700,300italic,700italic);
// Colors used in the theme
$blood: #a23;
$coal: #222;
$codeBackground: #23241f;
$backgroundColor: $coal;
// Main text
$mainFont: Ubuntu, 'sans-serif';
$mainColor: #eee;
// Headings
$headingFont: Ubuntu, 'sans-serif';
$headingTextShadow: 2px 2px 2px $coal;
// h1 shadow, borrowed humbly from
// (c) Default theme by Hakim El Hattab
$heading1TextShadow: 0 1px 0 #ccc, 0 2px 0 #c9c9c9, 0 3px 0 #bbb, 0 4px 0 #b9b9b9, 0 5px 0 #aaa, 0 6px 1px rgba(0,0,0,.1), 0 0 5px rgba(0,0,0,.1), 0 1px 3px rgba(0,0,0,.3), 0 3px 5px rgba(0,0,0,.2), 0 5px 10px rgba(0,0,0,.25), 0 20px 20px rgba(0,0,0,.15);
// Links
$linkColor: $blood;
$linkColorHover: lighten( $linkColor, 20% );
// Text selection
$selectionBackgroundColor: $blood;
$selectionColor: #fff;
// Change text colors against dark slide backgrounds
@include light-bg-text-color(#222);
// Theme template ------------------------------
@import "../template/theme";
// ---------------------------------------------
// some overrides after theme template import
.reveal p {
font-weight: 300;
text-shadow: 1px 1px $coal;
}
section.has-light-background {
p, h1, h2, h3, h4 {
text-shadow: none;
}
}
.reveal h1,
.reveal h2,
.reveal h3,
.reveal h4,
.reveal h5,
.reveal h6 {
font-weight: 700;
}
.reveal p code {
background-color: $codeBackground;
display: inline-block;
border-radius: 7px;
}
.reveal small code {
vertical-align: baseline;
}

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/**
* Dracula Dark theme for reveal.js.
* Based on https://draculatheme.com
*/
// Default mixins and settings -----------------
@import "../template/mixins";
@import "../template/settings";
// ---------------------------------------------
// Include theme-specific fonts
$systemFontsSansSerif: -apple-system,
BlinkMacSystemFont,
avenir next,
avenir,
segoe ui,
helvetica neue,
helvetica,
Cantarell,
Ubuntu,
roboto,
noto,
arial,
sans-serif;
$systemFontsMono: Menlo,
Consolas,
Monaco,
Liberation Mono,
Lucida Console,
monospace;
/**
* Dracula colors by Zeno Rocha
* https://draculatheme.com/contribute
*/
html * {
color-profile: sRGB;
rendering-intent: auto;
}
$background: #282A36;
$foreground: #F8F8F2;
$selection: #44475A;
$comment: #6272A4;
$red: #FF5555;
$orange: #FFB86C;
$yellow: #F1FA8C;
$green: #50FA7B;
$purple: #BD93F9;
$cyan: #8BE9FD;
$pink: #FF79C6;
// Override theme settings (see ../template/settings.scss)
$mainColor: $foreground;
$headingColor: $purple;
$headingTextShadow: none;
$headingTextTransform: none;
$backgroundColor: $background;
$linkColor: $pink;
$linkColorHover: $cyan;
$selectionBackgroundColor: $selection;
$inlineCodeColor: $green;
$listBulletColor: $cyan;
$mainFont: $systemFontsSansSerif;
$codeFont: "Fira Code", $systemFontsMono;
// Change text colors against light slide backgrounds
@include light-bg-text-color($background);
// Theme template ------------------------------
@import "../template/theme";
// ---------------------------------------------
// Define additional color effects based on Dracula spec
// https://spec.draculatheme.com/
:root {
--r-bold-color: #{$orange};
--r-italic-color: #{$yellow};
--r-inline-code-color: #{$inlineCodeColor};
--r-list-bullet-color: #{$listBulletColor};
}
.reveal {
strong, b {
color: var(--r-bold-color);
}
em, i, blockquote {
color: var(--r-italic-color);
}
code {
color: var(--r-inline-code-color);
}
// Dracula colored list bullets and numbers
ul, ol {
li::marker {
color: var(--r-list-bullet-color);
}
}
}

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/**
* League theme for reveal.js.
*
* This was the default theme pre-3.0.0.
*
* Copyright (C) 2011-2012 Hakim El Hattab, http://hakim.se
*/
// Default mixins and settings -----------------
@import "../template/mixins";
@import "../template/settings";
// ---------------------------------------------
// Include theme-specific fonts
@import url(./fonts/league-gothic/league-gothic.css);
@import url(https://fonts.googleapis.com/css?family=Lato:400,700,400italic,700italic);
// Override theme settings (see ../template/settings.scss)
$headingTextShadow: 0px 0px 6px rgba(0,0,0,0.2);
$heading1TextShadow: 0 1px 0 #ccc, 0 2px 0 #c9c9c9, 0 3px 0 #bbb, 0 4px 0 #b9b9b9, 0 5px 0 #aaa, 0 6px 1px rgba(0,0,0,.1), 0 0 5px rgba(0,0,0,.1), 0 1px 3px rgba(0,0,0,.3), 0 3px 5px rgba(0,0,0,.2), 0 5px 10px rgba(0,0,0,.25), 0 20px 20px rgba(0,0,0,.15);
// Background generator
@mixin bodyBackground() {
@include radial-gradient( rgba(28,30,32,1), rgba(85,90,95,1) );
}
// Change text colors against light slide backgrounds
@include light-bg-text-color(#222);
// Theme template ------------------------------
@import "../template/theme";
// ---------------------------------------------

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/**
* Solarized Dark theme for reveal.js.
* Author: Achim Staebler
*/
// Default mixins and settings -----------------
@import "../template/mixins";
@import "../template/settings";
// ---------------------------------------------
// Include theme-specific fonts
@import url(./fonts/league-gothic/league-gothic.css);
@import url(https://fonts.googleapis.com/css?family=Lato:400,700,400italic,700italic);
/**
* Solarized colors by Ethan Schoonover
*/
// Solarized colors
$base03: #002b36;
$base02: #073642;
$base01: #586e75;
$base00: #657b83;
$base0: #839496;
$base1: #93a1a1;
$base2: #eee8d5;
$base3: #fdf6e3;
$yellow: #b58900;
$orange: #cb4b16;
$red: #dc322f;
$magenta: #d33682;
$violet: #6c71c4;
$blue: #268bd2;
$cyan: #2aa198;
$green: #859900;
// Override theme settings (see ../template/settings.scss)
$mainColor: $base1;
$headingColor: $base2;
$headingTextShadow: none;
$backgroundColor: $base03;
$linkColor: $blue;
$linkColorHover: lighten( $linkColor, 20% );
$selectionBackgroundColor: $magenta;
// Change text colors against light slide backgrounds
@include light-bg-text-color(#222);
// Theme template ------------------------------
@import "../template/theme";
// ---------------------------------------------

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/**
* Black theme for reveal.js.
*
* Copyright (C) 2011-2012 Hakim El Hattab, http://hakim.se
*/
// Default mixins and settings -----------------
@import "../template/mixins";
@import "../template/settings";
// ---------------------------------------------
// Include theme-specific fonts
@import url(https://fonts.googleapis.com/css?family=Montserrat:700);
@import url(https://fonts.googleapis.com/css?family=Open+Sans:400,700,400italic,700italic);
// Override theme settings (see ../template/settings.scss)
$backgroundColor: #111;
$mainFont: 'Open Sans', sans-serif;
$linkColor: #e7ad52;
$linkColorHover: lighten( $linkColor, 20% );
$headingFont: 'Montserrat', Impact, sans-serif;
$headingTextShadow: none;
$headingLetterSpacing: -0.03em;
$headingTextTransform: none;
$selectionBackgroundColor: #e7ad52;
// Change text colors against light slide backgrounds
@include light-bg-text-color(#222);
// Theme template ------------------------------
@import "../template/theme";
// ---------------------------------------------

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/**
* A simple theme for reveal.js presentations, similar
* to the default theme. The accent color is brown.
*
* This theme is Copyright (C) 2012-2013 Owen Versteeg, http://owenversteeg.com - it is MIT licensed.
*/
// Default mixins and settings -----------------
@import "../template/mixins";
@import "../template/settings";
// ---------------------------------------------
// Override theme settings (see ../template/settings.scss)
$mainFont: 'Palatino Linotype', 'Book Antiqua', Palatino, FreeSerif, serif;
$mainColor: #000;
$headingFont: 'Palatino Linotype', 'Book Antiqua', Palatino, FreeSerif, serif;
$headingColor: #383D3D;
$headingTextShadow: none;
$headingTextTransform: none;
$backgroundColor: #F0F1EB;
$linkColor: #51483D;
$linkColorHover: lighten( $linkColor, 20% );
$selectionBackgroundColor: #26351C;
$overlayElementBgColor: 0, 0, 0;
$overlayElementFgColor: 240, 240, 240;
.reveal a {
line-height: 1.3em;
}
// Change text colors against dark slide backgrounds
@include dark-bg-text-color(#fff);
// Theme template ------------------------------
@import "../template/theme";
// ---------------------------------------------

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/**
* A simple theme for reveal.js presentations, similar
* to the default theme. The accent color is darkblue.
*
* This theme is Copyright (C) 2012 Owen Versteeg, https://github.com/StereotypicalApps. It is MIT licensed.
* reveal.js is Copyright (C) 2011-2012 Hakim El Hattab, http://hakim.se
*/
// Default mixins and settings -----------------
@import "../template/mixins";
@import "../template/settings";
// ---------------------------------------------
// Include theme-specific fonts
@import url(https://fonts.googleapis.com/css?family=News+Cycle:400,700);
@import url(https://fonts.googleapis.com/css?family=Lato:400,700,400italic,700italic);
// Override theme settings (see ../template/settings.scss)
$mainFont: 'Lato', sans-serif;
$mainColor: #000;
$headingFont: 'News Cycle', Impact, sans-serif;
$headingColor: #000;
$headingTextShadow: none;
$headingTextTransform: none;
$backgroundColor: #fff;
$linkColor: #00008B;
$linkColorHover: lighten( $linkColor, 20% );
$selectionBackgroundColor: rgba(0, 0, 0, 0.99);
$overlayElementBgColor: 0, 0, 0;
$overlayElementFgColor: 240, 240, 240;
// Change text colors against dark slide backgrounds
@include dark-bg-text-color(#fff);
// Theme template ------------------------------
@import "../template/theme";
// ---------------------------------------------

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/**
* Sky theme for reveal.js.
*
* Copyright (C) 2011-2012 Hakim El Hattab, http://hakim.se
*/
// Default mixins and settings -----------------
@import "../template/mixins";
@import "../template/settings";
// ---------------------------------------------
// Include theme-specific fonts
@import url(https://fonts.googleapis.com/css?family=Quicksand:400,700,400italic,700italic);
@import url(https://fonts.googleapis.com/css?family=Open+Sans:400italic,700italic,400,700);
// Override theme settings (see ../template/settings.scss)
$mainFont: 'Open Sans', sans-serif;
$mainColor: #333;
$headingFont: 'Quicksand', sans-serif;
$headingColor: #333;
$headingLetterSpacing: -0.08em;
$headingTextShadow: none;
$backgroundColor: #f7fbfc;
$linkColor: #3b759e;
$linkColorHover: lighten( $linkColor, 20% );
$selectionBackgroundColor: #134674;
$overlayElementBgColor: 0, 0, 0;
$overlayElementFgColor: 240, 240, 240;
// Fix links so they are not cut off
.reveal a {
line-height: 1.3em;
}
// Background generator
@mixin bodyBackground() {
@include radial-gradient( #add9e4, #f7fbfc );
}
// Change text colors against dark slide backgrounds
@include dark-bg-text-color(#fff);
// Theme template ------------------------------
@import "../template/theme";
// ---------------------------------------------

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/**
* Solarized Light theme for reveal.js.
* Author: Achim Staebler
*/
// Default mixins and settings -----------------
@import "../template/mixins";
@import "../template/settings";
// ---------------------------------------------
// Include theme-specific fonts
@import url(./fonts/league-gothic/league-gothic.css);
@import url(https://fonts.googleapis.com/css?family=Lato:400,700,400italic,700italic);
/**
* Solarized colors by Ethan Schoonover
*/
html * {
color-profile: sRGB;
rendering-intent: auto;
}
// Solarized colors
$base03: #002b36;
$base02: #073642;
$base01: #586e75;
$base00: #657b83;
$base0: #839496;
$base1: #93a1a1;
$base2: #eee8d5;
$base3: #fdf6e3;
$yellow: #b58900;
$orange: #cb4b16;
$red: #dc322f;
$magenta: #d33682;
$violet: #6c71c4;
$blue: #268bd2;
$cyan: #2aa198;
$green: #859900;
// Override theme settings (see ../template/settings.scss)
$mainColor: $base00;
$headingColor: $base01;
$headingTextShadow: none;
$backgroundColor: $base3;
$linkColor: $blue;
$linkColorHover: lighten( $linkColor, 20% );
$selectionBackgroundColor: $magenta;
$overlayElementBgColor: 0, 0, 0;
$overlayElementFgColor: 240, 240, 240;
// Background generator
// @mixin bodyBackground() {
// @include radial-gradient( rgba($base3,1), rgba(lighten($base3, 20%),1) );
// }
// Theme template ------------------------------
@import "../template/theme";
// ---------------------------------------------

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/**
* White compact & high contrast reveal.js theme, with headers not in capitals.
*
* By Peter Kehl. Based on white.(s)css by Hakim El Hattab, http://hakim.se
*
* - Keep the source similar to black.css - for easy comparison.
* - $mainFontSize controls code blocks, too (although under some ratio).
*/
// Default mixins and settings -----------------
@import "../template/mixins";
@import "../template/settings";
// ---------------------------------------------
// Include theme-specific fonts
@import url(./fonts/source-sans-pro/source-sans-pro.css);
// Override theme settings (see ../template/settings.scss)
$backgroundColor: #fff;
$mainColor: #000;
$headingColor: #000;
$mainFontSize: 42px;
$mainFont: 'Source Sans Pro', Helvetica, sans-serif;
$headingFont: 'Source Sans Pro', Helvetica, sans-serif;
$headingTextShadow: none;
$headingLetterSpacing: normal;
$headingTextTransform: uppercase;
$headingFontWeight: 600;
$linkColor: #2a76dd;
$linkColorHover: lighten( $linkColor, 15% );
$selectionBackgroundColor: lighten( $linkColor, 25% );
$heading1Size: 2.5em;
$heading2Size: 1.6em;
$heading3Size: 1.3em;
$heading4Size: 1.0em;
$overlayElementBgColor: 0, 0, 0;
$overlayElementFgColor: 240, 240, 240;
// Change text colors against dark slide backgrounds
@include dark-bg-text-color(#fff);
// Theme template ------------------------------
@import "../template/theme";
// ---------------------------------------------

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/**
* White theme for reveal.js. This is the opposite of the 'black' theme.
*
* By Hakim El Hattab, http://hakim.se
*/
// Default mixins and settings -----------------
@import "../template/mixins";
@import "../template/settings";
// ---------------------------------------------
// Include theme-specific fonts
@import url(./fonts/source-sans-pro/source-sans-pro.css);
// Override theme settings (see ../template/settings.scss)
$backgroundColor: #fff;
$mainColor: #222;
$headingColor: #222;
$mainFontSize: 42px;
$mainFont: 'Source Sans Pro', Helvetica, sans-serif;
$headingFont: 'Source Sans Pro', Helvetica, sans-serif;
$headingTextShadow: none;
$headingLetterSpacing: normal;
$headingTextTransform: uppercase;
$headingFontWeight: 600;
$linkColor: #2a76dd;
$linkColorHover: lighten( $linkColor, 15% );
$selectionBackgroundColor: lighten( $linkColor, 25% );
$heading1Size: 2.5em;
$heading2Size: 1.6em;
$heading3Size: 1.3em;
$heading4Size: 1.0em;
$overlayElementBgColor: 0, 0, 0;
$overlayElementFgColor: 240, 240, 240;
// Change text colors against dark slide backgrounds
@include dark-bg-text-color(#fff);
// Theme template ------------------------------
@import "../template/theme";
// ---------------------------------------------

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// Exposes theme's variables for easy re-use in CSS for plugin authors
:root {
--r-background-color: #{$backgroundColor};
--r-main-font: #{$mainFont};
--r-main-font-size: #{$mainFontSize};
--r-main-color: #{$mainColor};
--r-block-margin: #{$blockMargin};
--r-heading-margin: #{$headingMargin};
--r-heading-font: #{$headingFont};
--r-heading-color: #{$headingColor};
--r-heading-line-height: #{$headingLineHeight};
--r-heading-letter-spacing: #{$headingLetterSpacing};
--r-heading-text-transform: #{$headingTextTransform};
--r-heading-text-shadow: #{$headingTextShadow};
--r-heading-font-weight: #{$headingFontWeight};
--r-heading1-text-shadow: #{$heading1TextShadow};
--r-heading1-size: #{$heading1Size};
--r-heading2-size: #{$heading2Size};
--r-heading3-size: #{$heading3Size};
--r-heading4-size: #{$heading4Size};
--r-code-font: #{$codeFont};
--r-link-color: #{$linkColor};
--r-link-color-dark: #{darken($linkColor , 15% )};
--r-link-color-hover: #{$linkColorHover};
--r-selection-background-color: #{$selectionBackgroundColor};
--r-selection-color: #{$selectionColor};
--r-overlay-element-bg-color: #{$overlayElementBgColor};
--r-overlay-element-fg-color: #{$overlayElementFgColor};
}

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@mixin vertical-gradient( $top, $bottom ) {
background: $top;
background: -moz-linear-gradient( top, $top 0%, $bottom 100% );
background: -webkit-gradient( linear, left top, left bottom, color-stop(0%,$top), color-stop(100%,$bottom) );
background: -webkit-linear-gradient( top, $top 0%, $bottom 100% );
background: -o-linear-gradient( top, $top 0%, $bottom 100% );
background: -ms-linear-gradient( top, $top 0%, $bottom 100% );
background: linear-gradient( top, $top 0%, $bottom 100% );
}
@mixin horizontal-gradient( $top, $bottom ) {
background: $top;
background: -moz-linear-gradient( left, $top 0%, $bottom 100% );
background: -webkit-gradient( linear, left top, right top, color-stop(0%,$top), color-stop(100%,$bottom) );
background: -webkit-linear-gradient( left, $top 0%, $bottom 100% );
background: -o-linear-gradient( left, $top 0%, $bottom 100% );
background: -ms-linear-gradient( left, $top 0%, $bottom 100% );
background: linear-gradient( left, $top 0%, $bottom 100% );
}
@mixin radial-gradient( $outer, $inner, $type: circle ) {
background: $outer;
background: -moz-radial-gradient( center, $type cover, $inner 0%, $outer 100% );
background: -webkit-gradient( radial, center center, 0px, center center, 100%, color-stop(0%,$inner), color-stop(100%,$outer) );
background: -webkit-radial-gradient( center, $type cover, $inner 0%, $outer 100% );
background: -o-radial-gradient( center, $type cover, $inner 0%, $outer 100% );
background: -ms-radial-gradient( center, $type cover, $inner 0%, $outer 100% );
background: radial-gradient( center, $type cover, $inner 0%, $outer 100% );
}
@mixin light-bg-text-color( $color ) {
section.has-light-background {
&, h1, h2, h3, h4, h5, h6 {
color: $color;
}
}
}
@mixin dark-bg-text-color( $color ) {
section.has-dark-background {
&, h1, h2, h3, h4, h5, h6 {
color: $color;
}
}
}

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// Base settings for all themes that can optionally be
// overridden by the super-theme
// Background of the presentation
$backgroundColor: #2b2b2b;
// Primary/body text
$mainFont: 'Lato', sans-serif;
$mainFontSize: 40px;
$mainColor: #eee;
// Vertical spacing between blocks of text
$blockMargin: 20px;
// Headings
$headingMargin: 0 0 $blockMargin 0;
$headingFont: 'League Gothic', Impact, sans-serif;
$headingColor: #eee;
$headingLineHeight: 1.2;
$headingLetterSpacing: normal;
$headingTextTransform: uppercase;
$headingTextShadow: none;
$headingFontWeight: normal;
$heading1TextShadow: $headingTextShadow;
$heading1Size: 3.77em;
$heading2Size: 2.11em;
$heading3Size: 1.55em;
$heading4Size: 1.00em;
$codeFont: monospace;
// Links and actions
$linkColor: #13DAEC;
$linkColorHover: lighten( $linkColor, 20% );
// Text selection
$selectionBackgroundColor: #FF5E99;
$selectionColor: #fff;
// Colors used for UI elements that are overlaid on top of
// the presentation
$overlayElementBgColor: 240, 240, 240;
$overlayElementFgColor: 0, 0, 0;
// Generates the presentation background, can be overridden
// to return a background image or gradient
@mixin bodyBackground() {
background: $backgroundColor;
}

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// Base theme template for reveal.js
/*********************************************
* GLOBAL STYLES
*********************************************/
@import "./exposer";
.reveal-viewport {
@include bodyBackground();
background-color: var(--r-background-color);
}
.reveal {
font-family: var(--r-main-font);
font-size: var(--r-main-font-size);
font-weight: normal;
color: var(--r-main-color);
}
.reveal ::selection {
color: var(--r-selection-color);
background: var(--r-selection-background-color);
text-shadow: none;
}
.reveal ::-moz-selection {
color: var(--r-selection-color);
background: var(--r-selection-background-color);
text-shadow: none;
}
.reveal .slides section,
.reveal .slides section>section {
line-height: 1.3;
font-weight: inherit;
}
/*********************************************
* HEADERS
*********************************************/
.reveal h1,
.reveal h2,
.reveal h3,
.reveal h4,
.reveal h5,
.reveal h6 {
margin: var(--r-heading-margin);
color: var(--r-heading-color);
font-family: var(--r-heading-font);
font-weight: var(--r-heading-font-weight);
line-height: var(--r-heading-line-height);
letter-spacing: var(--r-heading-letter-spacing);
text-transform: var(--r-heading-text-transform);
text-shadow: var(--r-heading-text-shadow);
word-wrap: break-word;
}
.reveal h1 {font-size: var(--r-heading1-size); }
.reveal h2 {font-size: var(--r-heading2-size); }
.reveal h3 {font-size: var(--r-heading3-size); }
.reveal h4 {font-size: var(--r-heading4-size); }
.reveal h1 {
text-shadow: var(--r-heading1-text-shadow);
}
/*********************************************
* OTHER
*********************************************/
.reveal p {
margin: var(--r-block-margin) 0;
line-height: 1.3;
}
/* Remove trailing margins after titles */
.reveal h1:last-child,
.reveal h2:last-child,
.reveal h3:last-child,
.reveal h4:last-child,
.reveal h5:last-child,
.reveal h6:last-child {
margin-bottom: 0;
}
/* Ensure certain elements are never larger than the slide itself */
.reveal img,
.reveal video,
.reveal iframe {
max-width: 95%;
max-height: 95%;
}
.reveal strong,
.reveal b {
font-weight: bold;
}
.reveal em {
font-style: italic;
}
.reveal ol,
.reveal dl,
.reveal ul {
display: inline-block;
text-align: left;
margin: 0 0 0 1em;
}
.reveal ol {
list-style-type: decimal;
}
.reveal ul {
list-style-type: disc;
}
.reveal ul ul {
list-style-type: square;
}
.reveal ul ul ul {
list-style-type: circle;
}
.reveal ul ul,
.reveal ul ol,
.reveal ol ol,
.reveal ol ul {
display: block;
margin-left: 40px;
}
.reveal dt {
font-weight: bold;
}
.reveal dd {
margin-left: 40px;
}
.reveal blockquote {
display: block;
position: relative;
width: 70%;
margin: var(--r-block-margin) auto;
padding: 5px;
font-style: italic;
background: rgba(255, 255, 255, 0.05);
box-shadow: 0px 0px 2px rgba(0,0,0,0.2);
}
.reveal blockquote p:first-child,
.reveal blockquote p:last-child {
display: inline-block;
}
.reveal q {
font-style: italic;
}
.reveal pre {
display: block;
position: relative;
width: 90%;
margin: var(--r-block-margin) auto;
text-align: left;
font-size: 0.55em;
font-family: var(--r-code-font);
line-height: 1.2em;
word-wrap: break-word;
box-shadow: 0px 5px 15px rgba(0, 0, 0, 0.15);
}
.reveal code {
font-family: var(--r-code-font);
text-transform: none;
tab-size: 2;
}
.reveal pre code {
display: block;
padding: 5px;
overflow: auto;
max-height: 400px;
word-wrap: normal;
}
.reveal .code-wrapper {
white-space: normal;
}
.reveal .code-wrapper code {
white-space: pre;
}
.reveal table {
margin: auto;
border-collapse: collapse;
border-spacing: 0;
}
.reveal table th {
font-weight: bold;
}
.reveal table th,
.reveal table td {
text-align: left;
padding: 0.2em 0.5em 0.2em 0.5em;
border-bottom: 1px solid;
}
.reveal table th[align="center"],
.reveal table td[align="center"] {
text-align: center;
}
.reveal table th[align="right"],
.reveal table td[align="right"] {
text-align: right;
}
.reveal table tbody tr:last-child th,
.reveal table tbody tr:last-child td {
border-bottom: none;
}
.reveal sup {
vertical-align: super;
font-size: smaller;
}
.reveal sub {
vertical-align: sub;
font-size: smaller;
}
.reveal small {
display: inline-block;
font-size: 0.6em;
line-height: 1.2em;
vertical-align: top;
}
.reveal small * {
vertical-align: top;
}
.reveal img {
margin: var(--r-block-margin) 0;
}
/*********************************************
* LINKS
*********************************************/
.reveal a {
color: var(--r-link-color);
text-decoration: none;
transition: color .15s ease;
}
.reveal a:hover {
color: var(--r-link-color-hover);
text-shadow: none;
border: none;
}
.reveal .roll span:after {
color: #fff;
// background: darken( var(--r-link-color), 15% );
background: var(--r-link-color-dark);
}
/*********************************************
* Frame helper
*********************************************/
.reveal .r-frame {
border: 4px solid var(--r-main-color);
box-shadow: 0 0 10px rgba(0, 0, 0, 0.15);
}
.reveal a .r-frame {
transition: all .15s linear;
}
.reveal a:hover .r-frame {
border-color: var(--r-link-color);
box-shadow: 0 0 20px rgba(0, 0, 0, 0.55);
}
/*********************************************
* NAVIGATION CONTROLS
*********************************************/
.reveal .controls {
color: var(--r-link-color);
}
/*********************************************
* PROGRESS BAR
*********************************************/
.reveal .progress {
background: rgba(0,0,0,0.2);
color: var(--r-link-color);
}
/*********************************************
* PRINT BACKGROUND
*********************************************/
@media print {
.backgrounds {
background-color: var(--r-background-color);
}
}

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const pkg = require('./package.json')
const glob = require('glob')
const yargs = require('yargs')
const through = require('through2');
const qunit = require('node-qunit-puppeteer')
const {rollup} = require('rollup')
const terser = require('@rollup/plugin-terser')
const babel = require('@rollup/plugin-babel').default
const commonjs = require('@rollup/plugin-commonjs')
const resolve = require('@rollup/plugin-node-resolve').default
const sass = require('sass')
const gulp = require('gulp')
const tap = require('gulp-tap')
const zip = require('gulp-zip')
const header = require('gulp-header')
const eslint = require('gulp-eslint')
const minify = require('gulp-clean-css')
const connect = require('gulp-connect')
const autoprefixer = require('gulp-autoprefixer')
const root = yargs.argv.root || '.'
const port = yargs.argv.port || 8000
const host = yargs.argv.host || 'localhost'
const banner = `/*!
* reveal.js ${pkg.version}
* ${pkg.homepage}
* MIT licensed
*
* Copyright (C) 2011-2024 Hakim El Hattab, https://hakim.se
*/\n`
// Prevents warnings from opening too many test pages
process.setMaxListeners(20);
const babelConfig = {
babelHelpers: 'bundled',
ignore: ['node_modules'],
compact: false,
extensions: ['.js', '.html'],
plugins: [
'transform-html-import-to-string'
],
presets: [[
'@babel/preset-env',
{
corejs: 3,
useBuiltIns: 'usage',
modules: false
}
]]
};
// Our ES module bundle only targets newer browsers with
// module support. Browsers are targeted explicitly instead
// of using the "esmodule: true" target since that leads to
// polyfilling older browsers and a larger bundle.
const babelConfigESM = JSON.parse( JSON.stringify( babelConfig ) );
babelConfigESM.presets[0][1].targets = { browsers: [
'last 2 Chrome versions',
'last 2 Safari versions',
'last 2 iOS versions',
'last 2 Firefox versions',
'last 2 Edge versions',
] };
let cache = {};
// Creates a bundle with broad browser support, exposed
// as UMD
gulp.task('js-es5', () => {
return rollup({
cache: cache.umd,
input: 'js/index.js',
plugins: [
resolve(),
commonjs(),
babel( babelConfig ),
terser()
]
}).then( bundle => {
cache.umd = bundle.cache;
return bundle.write({
name: 'Reveal',
file: './dist/reveal.js',
format: 'umd',
banner: banner,
sourcemap: true
});
});
})
// Creates an ES module bundle
gulp.task('js-es6', () => {
return rollup({
cache: cache.esm,
input: 'js/index.js',
plugins: [
resolve(),
commonjs(),
babel( babelConfigESM ),
terser()
]
}).then( bundle => {
cache.esm = bundle.cache;
return bundle.write({
file: './dist/reveal.esm.js',
format: 'es',
banner: banner,
sourcemap: true
});
});
})
gulp.task('js', gulp.parallel('js-es5', 'js-es6'));
// Creates a UMD and ES module bundle for each of our
// built-in plugins
gulp.task('plugins', () => {
return Promise.all([
{ name: 'RevealHighlight', input: './plugin/highlight/plugin.js', output: './plugin/highlight/highlight' },
{ name: 'RevealMarkdown', input: './plugin/markdown/plugin.js', output: './plugin/markdown/markdown' },
{ name: 'RevealSearch', input: './plugin/search/plugin.js', output: './plugin/search/search' },
{ name: 'RevealNotes', input: './plugin/notes/plugin.js', output: './plugin/notes/notes' },
{ name: 'RevealZoom', input: './plugin/zoom/plugin.js', output: './plugin/zoom/zoom' },
{ name: 'RevealMath', input: './plugin/math/plugin.js', output: './plugin/math/math' },
].map( plugin => {
return rollup({
cache: cache[plugin.input],
input: plugin.input,
plugins: [
resolve(),
commonjs(),
babel({
...babelConfig,
ignore: [/node_modules\/(?!(highlight\.js|marked)\/).*/],
}),
terser()
]
}).then( bundle => {
cache[plugin.input] = bundle.cache;
bundle.write({
file: plugin.output + '.esm.js',
name: plugin.name,
format: 'es'
})
bundle.write({
file: plugin.output + '.js',
name: plugin.name,
format: 'umd'
})
});
} ));
})
// a custom pipeable step to transform Sass to CSS
function compileSass() {
return through.obj( ( vinylFile, encoding, callback ) => {
const transformedFile = vinylFile.clone();
sass.render({
data: transformedFile.contents.toString(),
file: transformedFile.path,
}, ( err, result ) => {
if( err ) {
callback(err);
}
else {
transformedFile.extname = '.css';
transformedFile.contents = result.css;
callback( null, transformedFile );
}
});
});
}
gulp.task('css-themes', () => gulp.src(['./css/theme/source/*.{sass,scss}'])
.pipe(compileSass())
.pipe(gulp.dest('./dist/theme')))
gulp.task('css-core', () => gulp.src(['css/reveal.scss'])
.pipe(compileSass())
.pipe(autoprefixer())
.pipe(minify({compatibility: 'ie9'}))
.pipe(header(banner))
.pipe(gulp.dest('./dist')))
gulp.task('css', gulp.parallel('css-themes', 'css-core'))
gulp.task('qunit', () => {
let serverConfig = {
root,
port: 8009,
host: 'localhost',
name: 'test-server'
}
let server = connect.server( serverConfig )
let testFiles = glob.sync('test/*.html' )
let totalTests = 0;
let failingTests = 0;
let tests = Promise.all( testFiles.map( filename => {
return new Promise( ( resolve, reject ) => {
qunit.runQunitPuppeteer({
targetUrl: `http://${serverConfig.host}:${serverConfig.port}/${filename}`,
timeout: 20000,
redirectConsole: false,
puppeteerArgs: ['--allow-file-access-from-files']
})
.then(result => {
if( result.stats.failed > 0 ) {
console.log(`${'!'} ${filename} [${result.stats.passed}/${result.stats.total}] in ${result.stats.runtime}ms`.red);
// qunit.printResultSummary(result, console);
qunit.printFailedTests(result, console);
}
else {
console.log(`${'✔'} ${filename} [${result.stats.passed}/${result.stats.total}] in ${result.stats.runtime}ms`.green);
}
totalTests += result.stats.total;
failingTests += result.stats.failed;
resolve();
})
.catch(error => {
console.error(error);
reject();
});
} )
} ) );
return new Promise( ( resolve, reject ) => {
tests.then( () => {
if( failingTests > 0 ) {
reject( new Error(`${failingTests}/${totalTests} tests failed`.red) );
}
else {
console.log(`${'✔'} Passed ${totalTests} tests`.green.bold);
resolve();
}
} )
.catch( () => {
reject();
} )
.finally( () => {
server.close();
} );
} );
} )
gulp.task('eslint', () => gulp.src(['./js/**', 'gulpfile.js'])
.pipe(eslint())
.pipe(eslint.format()))
gulp.task('test', gulp.series( 'eslint', 'qunit' ))
gulp.task('default', gulp.series(gulp.parallel('js', 'css', 'plugins'), 'test'))
gulp.task('build', gulp.parallel('js', 'css', 'plugins'))
gulp.task('package', gulp.series(() =>
gulp.src(
[
'./index.html',
'./dist/**',
'./lib/**',
'./images/**',
'./plugin/**',
'./**/*.md'
],
{ base: './' }
)
.pipe(zip('reveal-js-presentation.zip')).pipe(gulp.dest('./'))
))
gulp.task('reload', () => gulp.src(['index.html'])
.pipe(connect.reload()));
gulp.task('serve', () => {
connect.server({
root: root,
port: port,
host: host,
livereload: true
})
const slidesRoot = root.endsWith('/') ? root : root + '/'
gulp.watch([
slidesRoot + '**/*.html',
slidesRoot + '**/*.md',
`!${slidesRoot}**/node_modules/**`, // ignore node_modules
], gulp.series('reload'))
gulp.watch(['js/**'], gulp.series('js', 'reload', 'eslint'))
gulp.watch(['plugin/**/plugin.js', 'plugin/**/*.html'], gulp.series('plugins', 'reload'))
gulp.watch([
'css/theme/source/**/*.{sass,scss}',
'css/theme/template/*.{sass,scss}',
], gulp.series('css-themes', 'reload'))
gulp.watch([
'css/*.scss',
'css/print/*.{sass,scss,css}'
], gulp.series('css-core', 'reload'))
gulp.watch(['test/*.html'], gulp.series('test'))
})

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<!doctype html>
<html lang="en">
<head>
<meta charset="utf-8">
<meta name="viewport" content="width=device-width, initial-scale=1.0, maximum-scale=1.0, user-scalable=no">
<title>reveal.js</title>
<link rel="stylesheet" href="dist/reset.css">
<link rel="stylesheet" href="dist/reveal.css">
<link rel="stylesheet" href="dist/theme/black.css">
<!-- Theme used for syntax highlighted code -->
<link rel="stylesheet" href="plugin/highlight/monokai.css">
</head>
<body>
<div class="reveal">
<div class="slides">
<section>Slide 1</section>
<section>Slide 2</section>
</div>
</div>
<script src="dist/reveal.js"></script>
<script src="plugin/notes/notes.js"></script>
<script src="plugin/markdown/markdown.js"></script>
<script src="plugin/highlight/highlight.js"></script>
<script>
// More info about initialization & config:
// - https://revealjs.com/initialization/
// - https://revealjs.com/config/
Reveal.initialize({
hash: true,
// Learn about plugins: https://revealjs.com/plugins/
plugins: [ RevealMarkdown, RevealHighlight, RevealNotes ]
});
</script>
</body>
</html>

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/**
* UI component that lets the use control auto-slide
* playback via play/pause.
*/
export default class Playback {
/**
* @param {HTMLElement} container The component will append
* itself to this
* @param {function} progressCheck A method which will be
* called frequently to get the current playback progress on
* a range of 0-1
*/
constructor( container, progressCheck ) {
// Cosmetics
this.diameter = 100;
this.diameter2 = this.diameter/2;
this.thickness = 6;
// Flags if we are currently playing
this.playing = false;
// Current progress on a 0-1 range
this.progress = 0;
// Used to loop the animation smoothly
this.progressOffset = 1;
this.container = container;
this.progressCheck = progressCheck;
this.canvas = document.createElement( 'canvas' );
this.canvas.className = 'playback';
this.canvas.width = this.diameter;
this.canvas.height = this.diameter;
this.canvas.style.width = this.diameter2 + 'px';
this.canvas.style.height = this.diameter2 + 'px';
this.context = this.canvas.getContext( '2d' );
this.container.appendChild( this.canvas );
this.render();
}
setPlaying( value ) {
const wasPlaying = this.playing;
this.playing = value;
// Start repainting if we weren't already
if( !wasPlaying && this.playing ) {
this.animate();
}
else {
this.render();
}
}
animate() {
const progressBefore = this.progress;
this.progress = this.progressCheck();
// When we loop, offset the progress so that it eases
// smoothly rather than immediately resetting
if( progressBefore > 0.8 && this.progress < 0.2 ) {
this.progressOffset = this.progress;
}
this.render();
if( this.playing ) {
requestAnimationFrame( this.animate.bind( this ) );
}
}
/**
* Renders the current progress and playback state.
*/
render() {
let progress = this.playing ? this.progress : 0,
radius = ( this.diameter2 ) - this.thickness,
x = this.diameter2,
y = this.diameter2,
iconSize = 28;
// Ease towards 1
this.progressOffset += ( 1 - this.progressOffset ) * 0.1;
const endAngle = ( - Math.PI / 2 ) + ( progress * ( Math.PI * 2 ) );
const startAngle = ( - Math.PI / 2 ) + ( this.progressOffset * ( Math.PI * 2 ) );
this.context.save();
this.context.clearRect( 0, 0, this.diameter, this.diameter );
// Solid background color
this.context.beginPath();
this.context.arc( x, y, radius + 4, 0, Math.PI * 2, false );
this.context.fillStyle = 'rgba( 0, 0, 0, 0.4 )';
this.context.fill();
// Draw progress track
this.context.beginPath();
this.context.arc( x, y, radius, 0, Math.PI * 2, false );
this.context.lineWidth = this.thickness;
this.context.strokeStyle = 'rgba( 255, 255, 255, 0.2 )';
this.context.stroke();
if( this.playing ) {
// Draw progress on top of track
this.context.beginPath();
this.context.arc( x, y, radius, startAngle, endAngle, false );
this.context.lineWidth = this.thickness;
this.context.strokeStyle = '#fff';
this.context.stroke();
}
this.context.translate( x - ( iconSize / 2 ), y - ( iconSize / 2 ) );
// Draw play/pause icons
if( this.playing ) {
this.context.fillStyle = '#fff';
this.context.fillRect( 0, 0, iconSize / 2 - 4, iconSize );
this.context.fillRect( iconSize / 2 + 4, 0, iconSize / 2 - 4, iconSize );
}
else {
this.context.beginPath();
this.context.translate( 4, 0 );
this.context.moveTo( 0, 0 );
this.context.lineTo( iconSize - 4, iconSize / 2 );
this.context.lineTo( 0, iconSize );
this.context.fillStyle = '#fff';
this.context.fill();
}
this.context.restore();
}
on( type, listener ) {
this.canvas.addEventListener( type, listener, false );
}
off( type, listener ) {
this.canvas.removeEventListener( type, listener, false );
}
destroy() {
this.playing = false;
if( this.canvas.parentNode ) {
this.container.removeChild( this.canvas );
}
}
}

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/**
* The default reveal.js config object.
*/
export default {
// The "normal" size of the presentation, aspect ratio will be preserved
// when the presentation is scaled to fit different resolutions
width: 960,
height: 700,
// Factor of the display size that should remain empty around the content
margin: 0.04,
// Bounds for smallest/largest possible scale to apply to content
minScale: 0.2,
maxScale: 2.0,
// Display presentation control arrows
controls: true,
// Help the user learn the controls by providing hints, for example by
// bouncing the down arrow when they first encounter a vertical slide
controlsTutorial: true,
// Determines where controls appear, "edges" or "bottom-right"
controlsLayout: 'bottom-right',
// Visibility rule for backwards navigation arrows; "faded", "hidden"
// or "visible"
controlsBackArrows: 'faded',
// Display a presentation progress bar
progress: true,
// Display the page number of the current slide
// - true: Show slide number
// - false: Hide slide number
//
// Can optionally be set as a string that specifies the number formatting:
// - "h.v": Horizontal . vertical slide number (default)
// - "h/v": Horizontal / vertical slide number
// - "c": Flattened slide number
// - "c/t": Flattened slide number / total slides
//
// Alternatively, you can provide a function that returns the slide
// number for the current slide. The function should take in a slide
// object and return an array with one string [slideNumber] or
// three strings [n1,delimiter,n2]. See #formatSlideNumber().
slideNumber: false,
// Can be used to limit the contexts in which the slide number appears
// - "all": Always show the slide number
// - "print": Only when printing to PDF
// - "speaker": Only in the speaker view
showSlideNumber: 'all',
// Use 1 based indexing for # links to match slide number (default is zero
// based)
hashOneBasedIndex: false,
// Add the current slide number to the URL hash so that reloading the
// page/copying the URL will return you to the same slide
hash: false,
// Flags if we should monitor the hash and change slides accordingly
respondToHashChanges: true,
// Enable support for jump-to-slide navigation shortcuts
jumpToSlide: true,
// Push each slide change to the browser history. Implies `hash: true`
history: false,
// Enable keyboard shortcuts for navigation
keyboard: true,
// Optional function that blocks keyboard events when retuning false
//
// If you set this to 'focused', we will only capture keyboard events
// for embedded decks when they are in focus
keyboardCondition: null,
// Disables the default reveal.js slide layout (scaling and centering)
// so that you can use custom CSS layout
disableLayout: false,
// Enable the slide overview mode
overview: true,
// Vertical centering of slides
center: true,
// Enables touch navigation on devices with touch input
touch: true,
// Loop the presentation
loop: false,
// Change the presentation direction to be RTL
rtl: false,
// Changes the behavior of our navigation directions.
//
// "default"
// Left/right arrow keys step between horizontal slides, up/down
// arrow keys step between vertical slides. Space key steps through
// all slides (both horizontal and vertical).
//
// "linear"
// Removes the up/down arrows. Left/right arrows step through all
// slides (both horizontal and vertical).
//
// "grid"
// When this is enabled, stepping left/right from a vertical stack
// to an adjacent vertical stack will land you at the same vertical
// index.
//
// Consider a deck with six slides ordered in two vertical stacks:
// 1.1 2.1
// 1.2 2.2
// 1.3 2.3
//
// If you're on slide 1.3 and navigate right, you will normally move
// from 1.3 -> 2.1. If "grid" is used, the same navigation takes you
// from 1.3 -> 2.3.
navigationMode: 'default',
// Randomizes the order of slides each time the presentation loads
shuffle: false,
// Turns fragments on and off globally
fragments: true,
// Flags whether to include the current fragment in the URL,
// so that reloading brings you to the same fragment position
fragmentInURL: true,
// Flags if the presentation is running in an embedded mode,
// i.e. contained within a limited portion of the screen
embedded: false,
// Flags if we should show a help overlay when the question-mark
// key is pressed
help: true,
// Flags if it should be possible to pause the presentation (blackout)
pause: true,
// Flags if speaker notes should be visible to all viewers
showNotes: false,
// Flags if slides with data-visibility="hidden" should be kep visible
showHiddenSlides: false,
// Global override for autoplaying embedded media (video/audio/iframe)
// - null: Media will only autoplay if data-autoplay is present
// - true: All media will autoplay, regardless of individual setting
// - false: No media will autoplay, regardless of individual setting
autoPlayMedia: null,
// Global override for preloading lazy-loaded iframes
// - null: Iframes with data-src AND data-preload will be loaded when within
// the viewDistance, iframes with only data-src will be loaded when visible
// - true: All iframes with data-src will be loaded when within the viewDistance
// - false: All iframes with data-src will be loaded only when visible
preloadIframes: null,
// Can be used to globally disable auto-animation
autoAnimate: true,
// Optionally provide a custom element matcher that will be
// used to dictate which elements we can animate between.
autoAnimateMatcher: null,
// Default settings for our auto-animate transitions, can be
// overridden per-slide or per-element via data arguments
autoAnimateEasing: 'ease',
autoAnimateDuration: 1.0,
autoAnimateUnmatched: true,
// CSS properties that can be auto-animated. Position & scale
// is matched separately so there's no need to include styles
// like top/right/bottom/left, width/height or margin.
autoAnimateStyles: [
'opacity',
'color',
'background-color',
'padding',
'font-size',
'line-height',
'letter-spacing',
'border-width',
'border-color',
'border-radius',
'outline',
'outline-offset'
],
// Controls automatic progression to the next slide
// - 0: Auto-sliding only happens if the data-autoslide HTML attribute
// is present on the current slide or fragment
// - 1+: All slides will progress automatically at the given interval
// - false: No auto-sliding, even if data-autoslide is present
autoSlide: 0,
// Stop auto-sliding after user input
autoSlideStoppable: true,
// Use this method for navigation when auto-sliding (defaults to navigateNext)
autoSlideMethod: null,
// Specify the average time in seconds that you think you will spend
// presenting each slide. This is used to show a pacing timer in the
// speaker view
defaultTiming: null,
// Enable slide navigation via mouse wheel
mouseWheel: false,
// Opens links in an iframe preview overlay
// Add `data-preview-link` and `data-preview-link="false"` to customise each link
// individually
previewLinks: false,
// Exposes the reveal.js API through window.postMessage
postMessage: true,
// Dispatches all reveal.js events to the parent window through postMessage
postMessageEvents: false,
// Focuses body when page changes visibility to ensure keyboard shortcuts work
focusBodyOnPageVisibilityChange: true,
// Transition style
transition: 'slide', // none/fade/slide/convex/concave/zoom
// Transition speed
transitionSpeed: 'default', // default/fast/slow
// Transition style for full page slide backgrounds
backgroundTransition: 'fade', // none/fade/slide/convex/concave/zoom
// Parallax background image
parallaxBackgroundImage: '', // CSS syntax, e.g. "a.jpg"
// Parallax background size
parallaxBackgroundSize: '', // CSS syntax, e.g. "3000px 2000px"
// Parallax background repeat
parallaxBackgroundRepeat: '', // repeat/repeat-x/repeat-y/no-repeat/initial/inherit
// Parallax background position
parallaxBackgroundPosition: '', // CSS syntax, e.g. "top left"
// Amount of pixels to move the parallax background per slide step
parallaxBackgroundHorizontal: null,
parallaxBackgroundVertical: null,
// Can be used to initialize reveal.js in one of the following views:
// - print: Render the presentation so that it can be printed to PDF
// - scroll: Show the presentation as a tall scrollable page with scroll
// triggered animations
view: null,
// Adjusts the height of each slide in the scroll view.
// - full: Each slide is as tall as the viewport
// - compact: Slides are as small as possible, allowing multiple slides
// to be visible in parallel on tall devices
scrollLayout: 'full',
// Control how scroll snapping works in the scroll view.
// - false: No snapping, scrolling is continuous
// - proximity: Snap when close to a slide
// - mandatory: Always snap to the closest slide
//
// Only applies to presentations in scroll view.
scrollSnap: 'mandatory',
// Enables and configure the scroll view progress bar.
// - 'auto': Show the scrollbar while scrolling, hide while idle
// - true: Always show the scrollbar
// - false: Never show the scrollbar
scrollProgress: 'auto',
// Automatically activate the scroll view when we the viewport falls
// below the given width.
scrollActivationWidth: 435,
// The maximum number of pages a single slide can expand onto when printing
// to PDF, unlimited by default
pdfMaxPagesPerSlide: Number.POSITIVE_INFINITY,
// Prints each fragment on a separate slide
pdfSeparateFragments: true,
// Offset used to reduce the height of content within exported PDF pages.
// This exists to account for environment differences based on how you
// print to PDF. CLI printing options, like phantomjs and wkpdf, can end
// on precisely the total height of the document whereas in-browser
// printing has to end one pixel before.
pdfPageHeightOffset: -1,
// Number of slides away from the current that are visible
viewDistance: 3,
// Number of slides away from the current that are visible on mobile
// devices. It is advisable to set this to a lower number than
// viewDistance in order to save resources.
mobileViewDistance: 2,
// The display mode that will be used to show slides
display: 'block',
// Hide cursor if inactive
hideInactiveCursor: true,
// Time before the cursor is hidden (in ms)
hideCursorTime: 5000,
// Should we automatically sort and set indices for fragments
// at each sync? (See Reveal.sync)
sortFragmentsOnSync: true,
// Script dependencies to load
dependencies: [],
// Plugin objects to register and use for this presentation
plugins: []
}

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import { queryAll, extend, createStyleSheet, matches, closest } from '../utils/util.js'
import { FRAGMENT_STYLE_REGEX } from '../utils/constants.js'
// Counter used to generate unique IDs for auto-animated elements
let autoAnimateCounter = 0;
/**
* Automatically animates matching elements across
* slides with the [data-auto-animate] attribute.
*/
export default class AutoAnimate {
constructor( Reveal ) {
this.Reveal = Reveal;
}
/**
* Runs an auto-animation between the given slides.
*
* @param {HTMLElement} fromSlide
* @param {HTMLElement} toSlide
*/
run( fromSlide, toSlide ) {
// Clean up after prior animations
this.reset();
let allSlides = this.Reveal.getSlides();
let toSlideIndex = allSlides.indexOf( toSlide );
let fromSlideIndex = allSlides.indexOf( fromSlide );
// Ensure that both slides are auto-animate targets with the same data-auto-animate-id value
// (including null if absent on both) and that data-auto-animate-restart isn't set on the
// physically latter slide (independent of slide direction)
if( fromSlide.hasAttribute( 'data-auto-animate' ) && toSlide.hasAttribute( 'data-auto-animate' )
&& fromSlide.getAttribute( 'data-auto-animate-id' ) === toSlide.getAttribute( 'data-auto-animate-id' )
&& !( toSlideIndex > fromSlideIndex ? toSlide : fromSlide ).hasAttribute( 'data-auto-animate-restart' ) ) {
// Create a new auto-animate sheet
this.autoAnimateStyleSheet = this.autoAnimateStyleSheet || createStyleSheet();
let animationOptions = this.getAutoAnimateOptions( toSlide );
// Set our starting state
fromSlide.dataset.autoAnimate = 'pending';
toSlide.dataset.autoAnimate = 'pending';
// Flag the navigation direction, needed for fragment buildup
animationOptions.slideDirection = toSlideIndex > fromSlideIndex ? 'forward' : 'backward';
// If the from-slide is hidden because it has moved outside
// the view distance, we need to temporarily show it while
// measuring
let fromSlideIsHidden = fromSlide.style.display === 'none';
if( fromSlideIsHidden ) fromSlide.style.display = this.Reveal.getConfig().display;
// Inject our auto-animate styles for this transition
let css = this.getAutoAnimatableElements( fromSlide, toSlide ).map( elements => {
return this.autoAnimateElements( elements.from, elements.to, elements.options || {}, animationOptions, autoAnimateCounter++ );
} );
if( fromSlideIsHidden ) fromSlide.style.display = 'none';
// Animate unmatched elements, if enabled
if( toSlide.dataset.autoAnimateUnmatched !== 'false' && this.Reveal.getConfig().autoAnimateUnmatched === true ) {
// Our default timings for unmatched elements
let defaultUnmatchedDuration = animationOptions.duration * 0.8,
defaultUnmatchedDelay = animationOptions.duration * 0.2;
this.getUnmatchedAutoAnimateElements( toSlide ).forEach( unmatchedElement => {
let unmatchedOptions = this.getAutoAnimateOptions( unmatchedElement, animationOptions );
let id = 'unmatched';
// If there is a duration or delay set specifically for this
// element our unmatched elements should adhere to those
if( unmatchedOptions.duration !== animationOptions.duration || unmatchedOptions.delay !== animationOptions.delay ) {
id = 'unmatched-' + autoAnimateCounter++;
css.push( `[data-auto-animate="running"] [data-auto-animate-target="${id}"] { transition: opacity ${unmatchedOptions.duration}s ease ${unmatchedOptions.delay}s; }` );
}
unmatchedElement.dataset.autoAnimateTarget = id;
}, this );
// Our default transition for unmatched elements
css.push( `[data-auto-animate="running"] [data-auto-animate-target="unmatched"] { transition: opacity ${defaultUnmatchedDuration}s ease ${defaultUnmatchedDelay}s; }` );
}
// Setting the whole chunk of CSS at once is the most
// efficient way to do this. Using sheet.insertRule
// is multiple factors slower.
this.autoAnimateStyleSheet.innerHTML = css.join( '' );
// Start the animation next cycle
requestAnimationFrame( () => {
if( this.autoAnimateStyleSheet ) {
// This forces our newly injected styles to be applied in Firefox
getComputedStyle( this.autoAnimateStyleSheet ).fontWeight;
toSlide.dataset.autoAnimate = 'running';
}
} );
this.Reveal.dispatchEvent({
type: 'autoanimate',
data: {
fromSlide,
toSlide,
sheet: this.autoAnimateStyleSheet
}
});
}
}
/**
* Rolls back all changes that we've made to the DOM so
* that as part of animating.
*/
reset() {
// Reset slides
queryAll( this.Reveal.getRevealElement(), '[data-auto-animate]:not([data-auto-animate=""])' ).forEach( element => {
element.dataset.autoAnimate = '';
} );
// Reset elements
queryAll( this.Reveal.getRevealElement(), '[data-auto-animate-target]' ).forEach( element => {
delete element.dataset.autoAnimateTarget;
} );
// Remove the animation sheet
if( this.autoAnimateStyleSheet && this.autoAnimateStyleSheet.parentNode ) {
this.autoAnimateStyleSheet.parentNode.removeChild( this.autoAnimateStyleSheet );
this.autoAnimateStyleSheet = null;
}
}
/**
* Creates a FLIP animation where the `to` element starts out
* in the `from` element position and animates to its original
* state.
*
* @param {HTMLElement} from
* @param {HTMLElement} to
* @param {Object} elementOptions Options for this element pair
* @param {Object} animationOptions Options set at the slide level
* @param {String} id Unique ID that we can use to identify this
* auto-animate element in the DOM
*/
autoAnimateElements( from, to, elementOptions, animationOptions, id ) {
// 'from' elements are given a data-auto-animate-target with no value,
// 'to' elements are are given a data-auto-animate-target with an ID
from.dataset.autoAnimateTarget = '';
to.dataset.autoAnimateTarget = id;
// Each element may override any of the auto-animate options
// like transition easing, duration and delay via data-attributes
let options = this.getAutoAnimateOptions( to, animationOptions );
// If we're using a custom element matcher the element options
// may contain additional transition overrides
if( typeof elementOptions.delay !== 'undefined' ) options.delay = elementOptions.delay;
if( typeof elementOptions.duration !== 'undefined' ) options.duration = elementOptions.duration;
if( typeof elementOptions.easing !== 'undefined' ) options.easing = elementOptions.easing;
let fromProps = this.getAutoAnimatableProperties( 'from', from, elementOptions ),
toProps = this.getAutoAnimatableProperties( 'to', to, elementOptions );
// Maintain fragment visibility for matching elements when
// we're navigating forwards, this way the viewer won't need
// to step through the same fragments twice
if( to.classList.contains( 'fragment' ) ) {
// Don't auto-animate the opacity of fragments to avoid
// conflicts with fragment animations
delete toProps.styles['opacity'];
if( from.classList.contains( 'fragment' ) ) {
let fromFragmentStyle = ( from.className.match( FRAGMENT_STYLE_REGEX ) || [''] )[0];
let toFragmentStyle = ( to.className.match( FRAGMENT_STYLE_REGEX ) || [''] )[0];
// Only skip the fragment if the fragment animation style
// remains unchanged
if( fromFragmentStyle === toFragmentStyle && animationOptions.slideDirection === 'forward' ) {
to.classList.add( 'visible', 'disabled' );
}
}
}
// If translation and/or scaling are enabled, css transform
// the 'to' element so that it matches the position and size
// of the 'from' element
if( elementOptions.translate !== false || elementOptions.scale !== false ) {
let presentationScale = this.Reveal.getScale();
let delta = {
x: ( fromProps.x - toProps.x ) / presentationScale,
y: ( fromProps.y - toProps.y ) / presentationScale,
scaleX: fromProps.width / toProps.width,
scaleY: fromProps.height / toProps.height
};
// Limit decimal points to avoid 0.0001px blur and stutter
delta.x = Math.round( delta.x * 1000 ) / 1000;
delta.y = Math.round( delta.y * 1000 ) / 1000;
delta.scaleX = Math.round( delta.scaleX * 1000 ) / 1000;
delta.scaleX = Math.round( delta.scaleX * 1000 ) / 1000;
let translate = elementOptions.translate !== false && ( delta.x !== 0 || delta.y !== 0 ),
scale = elementOptions.scale !== false && ( delta.scaleX !== 0 || delta.scaleY !== 0 );
// No need to transform if nothing's changed
if( translate || scale ) {
let transform = [];
if( translate ) transform.push( `translate(${delta.x}px, ${delta.y}px)` );
if( scale ) transform.push( `scale(${delta.scaleX}, ${delta.scaleY})` );
fromProps.styles['transform'] = transform.join( ' ' );
fromProps.styles['transform-origin'] = 'top left';
toProps.styles['transform'] = 'none';
}
}
// Delete all unchanged 'to' styles
for( let propertyName in toProps.styles ) {
const toValue = toProps.styles[propertyName];
const fromValue = fromProps.styles[propertyName];
if( toValue === fromValue ) {
delete toProps.styles[propertyName];
}
else {
// If these property values were set via a custom matcher providing
// an explicit 'from' and/or 'to' value, we always inject those values.
if( toValue.explicitValue === true ) {
toProps.styles[propertyName] = toValue.value;
}
if( fromValue.explicitValue === true ) {
fromProps.styles[propertyName] = fromValue.value;
}
}
}
let css = '';
let toStyleProperties = Object.keys( toProps.styles );
// Only create animate this element IF at least one style
// property has changed
if( toStyleProperties.length > 0 ) {
// Instantly move to the 'from' state
fromProps.styles['transition'] = 'none';
// Animate towards the 'to' state
toProps.styles['transition'] = `all ${options.duration}s ${options.easing} ${options.delay}s`;
toProps.styles['transition-property'] = toStyleProperties.join( ', ' );
toProps.styles['will-change'] = toStyleProperties.join( ', ' );
// Build up our custom CSS. We need to override inline styles
// so we need to make our styles vErY IMPORTANT!1!!
let fromCSS = Object.keys( fromProps.styles ).map( propertyName => {
return propertyName + ': ' + fromProps.styles[propertyName] + ' !important;';
} ).join( '' );
let toCSS = Object.keys( toProps.styles ).map( propertyName => {
return propertyName + ': ' + toProps.styles[propertyName] + ' !important;';
} ).join( '' );
css = '[data-auto-animate-target="'+ id +'"] {'+ fromCSS +'}' +
'[data-auto-animate="running"] [data-auto-animate-target="'+ id +'"] {'+ toCSS +'}';
}
return css;
}
/**
* Returns the auto-animate options for the given element.
*
* @param {HTMLElement} element Element to pick up options
* from, either a slide or an animation target
* @param {Object} [inheritedOptions] Optional set of existing
* options
*/
getAutoAnimateOptions( element, inheritedOptions ) {
let options = {
easing: this.Reveal.getConfig().autoAnimateEasing,
duration: this.Reveal.getConfig().autoAnimateDuration,
delay: 0
};
options = extend( options, inheritedOptions );
// Inherit options from parent elements
if( element.parentNode ) {
let autoAnimatedParent = closest( element.parentNode, '[data-auto-animate-target]' );
if( autoAnimatedParent ) {
options = this.getAutoAnimateOptions( autoAnimatedParent, options );
}
}
if( element.dataset.autoAnimateEasing ) {
options.easing = element.dataset.autoAnimateEasing;
}
if( element.dataset.autoAnimateDuration ) {
options.duration = parseFloat( element.dataset.autoAnimateDuration );
}
if( element.dataset.autoAnimateDelay ) {
options.delay = parseFloat( element.dataset.autoAnimateDelay );
}
return options;
}
/**
* Returns an object containing all of the properties
* that can be auto-animated for the given element and
* their current computed values.
*
* @param {String} direction 'from' or 'to'
*/
getAutoAnimatableProperties( direction, element, elementOptions ) {
let config = this.Reveal.getConfig();
let properties = { styles: [] };
// Position and size
if( elementOptions.translate !== false || elementOptions.scale !== false ) {
let bounds;
// Custom auto-animate may optionally return a custom tailored
// measurement function
if( typeof elementOptions.measure === 'function' ) {
bounds = elementOptions.measure( element );
}
else {
if( config.center ) {
// More precise, but breaks when used in combination
// with zoom for scaling the deck ¯\_(ツ)_/¯
bounds = element.getBoundingClientRect();
}
else {
let scale = this.Reveal.getScale();
bounds = {
x: element.offsetLeft * scale,
y: element.offsetTop * scale,
width: element.offsetWidth * scale,
height: element.offsetHeight * scale
};
}
}
properties.x = bounds.x;
properties.y = bounds.y;
properties.width = bounds.width;
properties.height = bounds.height;
}
const computedStyles = getComputedStyle( element );
// CSS styles
( elementOptions.styles || config.autoAnimateStyles ).forEach( style => {
let value;
// `style` is either the property name directly, or an object
// definition of a style property
if( typeof style === 'string' ) style = { property: style };
if( typeof style.from !== 'undefined' && direction === 'from' ) {
value = { value: style.from, explicitValue: true };
}
else if( typeof style.to !== 'undefined' && direction === 'to' ) {
value = { value: style.to, explicitValue: true };
}
else {
// Use a unitless value for line-height so that it inherits properly
if( style.property === 'line-height' ) {
value = parseFloat( computedStyles['line-height'] ) / parseFloat( computedStyles['font-size'] );
}
if( isNaN(value) ) {
value = computedStyles[style.property];
}
}
if( value !== '' ) {
properties.styles[style.property] = value;
}
} );
return properties;
}
/**
* Get a list of all element pairs that we can animate
* between the given slides.
*
* @param {HTMLElement} fromSlide
* @param {HTMLElement} toSlide
*
* @return {Array} Each value is an array where [0] is
* the element we're animating from and [1] is the
* element we're animating to
*/
getAutoAnimatableElements( fromSlide, toSlide ) {
let matcher = typeof this.Reveal.getConfig().autoAnimateMatcher === 'function' ? this.Reveal.getConfig().autoAnimateMatcher : this.getAutoAnimatePairs;
let pairs = matcher.call( this, fromSlide, toSlide );
let reserved = [];
// Remove duplicate pairs
return pairs.filter( ( pair, index ) => {
if( reserved.indexOf( pair.to ) === -1 ) {
reserved.push( pair.to );
return true;
}
} );
}
/**
* Identifies matching elements between slides.
*
* You can specify a custom matcher function by using
* the `autoAnimateMatcher` config option.
*/
getAutoAnimatePairs( fromSlide, toSlide ) {
let pairs = [];
const codeNodes = 'pre';
const textNodes = 'h1, h2, h3, h4, h5, h6, p, li';
const mediaNodes = 'img, video, iframe';
// Explicit matches via data-id
this.findAutoAnimateMatches( pairs, fromSlide, toSlide, '[data-id]', node => {
return node.nodeName + ':::' + node.getAttribute( 'data-id' );
} );
// Text
this.findAutoAnimateMatches( pairs, fromSlide, toSlide, textNodes, node => {
return node.nodeName + ':::' + node.innerText;
} );
// Media
this.findAutoAnimateMatches( pairs, fromSlide, toSlide, mediaNodes, node => {
return node.nodeName + ':::' + ( node.getAttribute( 'src' ) || node.getAttribute( 'data-src' ) );
} );
// Code
this.findAutoAnimateMatches( pairs, fromSlide, toSlide, codeNodes, node => {
return node.nodeName + ':::' + node.innerText;
} );
pairs.forEach( pair => {
// Disable scale transformations on text nodes, we transition
// each individual text property instead
if( matches( pair.from, textNodes ) ) {
pair.options = { scale: false };
}
// Animate individual lines of code
else if( matches( pair.from, codeNodes ) ) {
// Transition the code block's width and height instead of scaling
// to prevent its content from being squished
pair.options = { scale: false, styles: [ 'width', 'height' ] };
// Lines of code
this.findAutoAnimateMatches( pairs, pair.from, pair.to, '.hljs .hljs-ln-code', node => {
return node.textContent;
}, {
scale: false,
styles: [],
measure: this.getLocalBoundingBox.bind( this )
} );
// Line numbers
this.findAutoAnimateMatches( pairs, pair.from, pair.to, '.hljs .hljs-ln-numbers[data-line-number]', node => {
return node.getAttribute( 'data-line-number' );
}, {
scale: false,
styles: [ 'width' ],
measure: this.getLocalBoundingBox.bind( this )
} );
}
}, this );
return pairs;
}
/**
* Helper method which returns a bounding box based on
* the given elements offset coordinates.
*
* @param {HTMLElement} element
* @return {Object} x, y, width, height
*/
getLocalBoundingBox( element ) {
const presentationScale = this.Reveal.getScale();
return {
x: Math.round( ( element.offsetLeft * presentationScale ) * 100 ) / 100,
y: Math.round( ( element.offsetTop * presentationScale ) * 100 ) / 100,
width: Math.round( ( element.offsetWidth * presentationScale ) * 100 ) / 100,
height: Math.round( ( element.offsetHeight * presentationScale ) * 100 ) / 100
};
}
/**
* Finds matching elements between two slides.
*
* @param {Array} pairs List of pairs to push matches to
* @param {HTMLElement} fromScope Scope within the from element exists
* @param {HTMLElement} toScope Scope within the to element exists
* @param {String} selector CSS selector of the element to match
* @param {Function} serializer A function that accepts an element and returns
* a stringified ID based on its contents
* @param {Object} animationOptions Optional config options for this pair
*/
findAutoAnimateMatches( pairs, fromScope, toScope, selector, serializer, animationOptions ) {
let fromMatches = {};
let toMatches = {};
[].slice.call( fromScope.querySelectorAll( selector ) ).forEach( ( element, i ) => {
const key = serializer( element );
if( typeof key === 'string' && key.length ) {
fromMatches[key] = fromMatches[key] || [];
fromMatches[key].push( element );
}
} );
[].slice.call( toScope.querySelectorAll( selector ) ).forEach( ( element, i ) => {
const key = serializer( element );
toMatches[key] = toMatches[key] || [];
toMatches[key].push( element );
let fromElement;
// Retrieve the 'from' element
if( fromMatches[key] ) {
const primaryIndex = toMatches[key].length - 1;
const secondaryIndex = fromMatches[key].length - 1;
// If there are multiple identical from elements, retrieve
// the one at the same index as our to-element.
if( fromMatches[key][ primaryIndex ] ) {
fromElement = fromMatches[key][ primaryIndex ];
fromMatches[key][ primaryIndex ] = null;
}
// If there are no matching from-elements at the same index,
// use the last one.
else if( fromMatches[key][ secondaryIndex ] ) {
fromElement = fromMatches[key][ secondaryIndex ];
fromMatches[key][ secondaryIndex ] = null;
}
}
// If we've got a matching pair, push it to the list of pairs
if( fromElement ) {
pairs.push({
from: fromElement,
to: element,
options: animationOptions
});
}
} );
}
/**
* Returns a all elements within the given scope that should
* be considered unmatched in an auto-animate transition. If
* fading of unmatched elements is turned on, these elements
* will fade when going between auto-animate slides.
*
* Note that parents of auto-animate targets are NOT considered
* unmatched since fading them would break the auto-animation.
*
* @param {HTMLElement} rootElement
* @return {Array}
*/
getUnmatchedAutoAnimateElements( rootElement ) {
return [].slice.call( rootElement.children ).reduce( ( result, element ) => {
const containsAnimatedElements = element.querySelector( '[data-auto-animate-target]' );
// The element is unmatched if
// - It is not an auto-animate target
// - It does not contain any auto-animate targets
if( !element.hasAttribute( 'data-auto-animate-target' ) && !containsAnimatedElements ) {
result.push( element );
}
if( element.querySelector( '[data-auto-animate-target]' ) ) {
result = result.concat( this.getUnmatchedAutoAnimateElements( element ) );
}
return result;
}, [] );
}
}

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import { queryAll } from '../utils/util.js'
import { colorToRgb, colorBrightness } from '../utils/color.js'
/**
* Creates and updates slide backgrounds.
*/
export default class Backgrounds {
constructor( Reveal ) {
this.Reveal = Reveal;
}
render() {
this.element = document.createElement( 'div' );
this.element.className = 'backgrounds';
this.Reveal.getRevealElement().appendChild( this.element );
}
/**
* Creates the slide background elements and appends them
* to the background container. One element is created per
* slide no matter if the given slide has visible background.
*/
create() {
// Clear prior backgrounds
this.element.innerHTML = '';
this.element.classList.add( 'no-transition' );
// Iterate over all horizontal slides
this.Reveal.getHorizontalSlides().forEach( slideh => {
let backgroundStack = this.createBackground( slideh, this.element );
// Iterate over all vertical slides
queryAll( slideh, 'section' ).forEach( slidev => {
this.createBackground( slidev, backgroundStack );
backgroundStack.classList.add( 'stack' );
} );
} );
// Add parallax background if specified
if( this.Reveal.getConfig().parallaxBackgroundImage ) {
this.element.style.backgroundImage = 'url("' + this.Reveal.getConfig().parallaxBackgroundImage + '")';
this.element.style.backgroundSize = this.Reveal.getConfig().parallaxBackgroundSize;
this.element.style.backgroundRepeat = this.Reveal.getConfig().parallaxBackgroundRepeat;
this.element.style.backgroundPosition = this.Reveal.getConfig().parallaxBackgroundPosition;
// Make sure the below properties are set on the element - these properties are
// needed for proper transitions to be set on the element via CSS. To remove
// annoying background slide-in effect when the presentation starts, apply
// these properties after short time delay
setTimeout( () => {
this.Reveal.getRevealElement().classList.add( 'has-parallax-background' );
}, 1 );
}
else {
this.element.style.backgroundImage = '';
this.Reveal.getRevealElement().classList.remove( 'has-parallax-background' );
}
}
/**
* Creates a background for the given slide.
*
* @param {HTMLElement} slide
* @param {HTMLElement} container The element that the background
* should be appended to
* @return {HTMLElement} New background div
*/
createBackground( slide, container ) {
// Main slide background element
let element = document.createElement( 'div' );
element.className = 'slide-background ' + slide.className.replace( /present|past|future/, '' );
// Inner background element that wraps images/videos/iframes
let contentElement = document.createElement( 'div' );
contentElement.className = 'slide-background-content';
element.appendChild( contentElement );
container.appendChild( element );
slide.slideBackgroundElement = element;
slide.slideBackgroundContentElement = contentElement;
// Syncs the background to reflect all current background settings
this.sync( slide );
return element;
}
/**
* Renders all of the visual properties of a slide background
* based on the various background attributes.
*
* @param {HTMLElement} slide
*/
sync( slide ) {
const element = slide.slideBackgroundElement,
contentElement = slide.slideBackgroundContentElement;
const data = {
background: slide.getAttribute( 'data-background' ),
backgroundSize: slide.getAttribute( 'data-background-size' ),
backgroundImage: slide.getAttribute( 'data-background-image' ),
backgroundVideo: slide.getAttribute( 'data-background-video' ),
backgroundIframe: slide.getAttribute( 'data-background-iframe' ),
backgroundColor: slide.getAttribute( 'data-background-color' ),
backgroundGradient: slide.getAttribute( 'data-background-gradient' ),
backgroundRepeat: slide.getAttribute( 'data-background-repeat' ),
backgroundPosition: slide.getAttribute( 'data-background-position' ),
backgroundTransition: slide.getAttribute( 'data-background-transition' ),
backgroundOpacity: slide.getAttribute( 'data-background-opacity' ),
};
const dataPreload = slide.hasAttribute( 'data-preload' );
// Reset the prior background state in case this is not the
// initial sync
slide.classList.remove( 'has-dark-background' );
slide.classList.remove( 'has-light-background' );
element.removeAttribute( 'data-loaded' );
element.removeAttribute( 'data-background-hash' );
element.removeAttribute( 'data-background-size' );
element.removeAttribute( 'data-background-transition' );
element.style.backgroundColor = '';
contentElement.style.backgroundSize = '';
contentElement.style.backgroundRepeat = '';
contentElement.style.backgroundPosition = '';
contentElement.style.backgroundImage = '';
contentElement.style.opacity = '';
contentElement.innerHTML = '';
if( data.background ) {
// Auto-wrap image urls in url(...)
if( /^(http|file|\/\/)/gi.test( data.background ) || /\.(svg|png|jpg|jpeg|gif|bmp|webp)([?#\s]|$)/gi.test( data.background ) ) {
slide.setAttribute( 'data-background-image', data.background );
}
else {
element.style.background = data.background;
}
}
// Create a hash for this combination of background settings.
// This is used to determine when two slide backgrounds are
// the same.
if( data.background || data.backgroundColor || data.backgroundGradient || data.backgroundImage || data.backgroundVideo || data.backgroundIframe ) {
element.setAttribute( 'data-background-hash', data.background +
data.backgroundSize +
data.backgroundImage +
data.backgroundVideo +
data.backgroundIframe +
data.backgroundColor +
data.backgroundGradient +
data.backgroundRepeat +
data.backgroundPosition +
data.backgroundTransition +
data.backgroundOpacity );
}
// Additional and optional background properties
if( data.backgroundSize ) element.setAttribute( 'data-background-size', data.backgroundSize );
if( data.backgroundColor ) element.style.backgroundColor = data.backgroundColor;
if( data.backgroundGradient ) element.style.backgroundImage = data.backgroundGradient;
if( data.backgroundTransition ) element.setAttribute( 'data-background-transition', data.backgroundTransition );
if( dataPreload ) element.setAttribute( 'data-preload', '' );
// Background image options are set on the content wrapper
if( data.backgroundSize ) contentElement.style.backgroundSize = data.backgroundSize;
if( data.backgroundRepeat ) contentElement.style.backgroundRepeat = data.backgroundRepeat;
if( data.backgroundPosition ) contentElement.style.backgroundPosition = data.backgroundPosition;
if( data.backgroundOpacity ) contentElement.style.opacity = data.backgroundOpacity;
const contrastClass = this.getContrastClass( slide );
if( typeof contrastClass === 'string' ) {
slide.classList.add( contrastClass );
}
}
/**
* Returns a class name that can be applied to a slide to indicate
* if it has a light or dark background.
*
* @param {*} slide
*
* @returns {string|null}
*/
getContrastClass( slide ) {
const element = slide.slideBackgroundElement;
// If this slide has a background color, we add a class that
// signals if it is light or dark. If the slide has no background
// color, no class will be added
let contrastColor = slide.getAttribute( 'data-background-color' );
// If no bg color was found, or it cannot be converted by colorToRgb, check the computed background
if( !contrastColor || !colorToRgb( contrastColor ) ) {
let computedBackgroundStyle = window.getComputedStyle( element );
if( computedBackgroundStyle && computedBackgroundStyle.backgroundColor ) {
contrastColor = computedBackgroundStyle.backgroundColor;
}
}
if( contrastColor ) {
const rgb = colorToRgb( contrastColor );
// Ignore fully transparent backgrounds. Some browsers return
// rgba(0,0,0,0) when reading the computed background color of
// an element with no background
if( rgb && rgb.a !== 0 ) {
if( colorBrightness( contrastColor ) < 128 ) {
return 'has-dark-background';
}
else {
return 'has-light-background';
}
}
}
return null;
}
/**
* Bubble the 'has-light-background'/'has-dark-background' classes.
*/
bubbleSlideContrastClassToElement( slide, target ) {
[ 'has-light-background', 'has-dark-background' ].forEach( classToBubble => {
if( slide.classList.contains( classToBubble ) ) {
target.classList.add( classToBubble );
}
else {
target.classList.remove( classToBubble );
}
}, this );
}
/**
* Updates the background elements to reflect the current
* slide.
*
* @param {boolean} includeAll If true, the backgrounds of
* all vertical slides (not just the present) will be updated.
*/
update( includeAll = false ) {
let currentSlide = this.Reveal.getCurrentSlide();
let indices = this.Reveal.getIndices();
let currentBackground = null;
// Reverse past/future classes when in RTL mode
let horizontalPast = this.Reveal.getConfig().rtl ? 'future' : 'past',
horizontalFuture = this.Reveal.getConfig().rtl ? 'past' : 'future';
// Update the classes of all backgrounds to match the
// states of their slides (past/present/future)
Array.from( this.element.childNodes ).forEach( ( backgroundh, h ) => {
backgroundh.classList.remove( 'past', 'present', 'future' );
if( h < indices.h ) {
backgroundh.classList.add( horizontalPast );
}
else if ( h > indices.h ) {
backgroundh.classList.add( horizontalFuture );
}
else {
backgroundh.classList.add( 'present' );
// Store a reference to the current background element
currentBackground = backgroundh;
}
if( includeAll || h === indices.h ) {
queryAll( backgroundh, '.slide-background' ).forEach( ( backgroundv, v ) => {
backgroundv.classList.remove( 'past', 'present', 'future' );
const indexv = typeof indices.v === 'number' ? indices.v : 0;
if( v < indexv ) {
backgroundv.classList.add( 'past' );
}
else if ( v > indexv ) {
backgroundv.classList.add( 'future' );
}
else {
backgroundv.classList.add( 'present' );
// Only if this is the present horizontal and vertical slide
if( h === indices.h ) currentBackground = backgroundv;
}
} );
}
} );
// Stop content inside of previous backgrounds
if( this.previousBackground ) {
this.Reveal.slideContent.stopEmbeddedContent( this.previousBackground, { unloadIframes: !this.Reveal.slideContent.shouldPreload( this.previousBackground ) } );
}
// Start content in the current background
if( currentBackground ) {
this.Reveal.slideContent.startEmbeddedContent( currentBackground );
let currentBackgroundContent = currentBackground.querySelector( '.slide-background-content' );
if( currentBackgroundContent ) {
let backgroundImageURL = currentBackgroundContent.style.backgroundImage || '';
// Restart GIFs (doesn't work in Firefox)
if( /\.gif/i.test( backgroundImageURL ) ) {
currentBackgroundContent.style.backgroundImage = '';
window.getComputedStyle( currentBackgroundContent ).opacity;
currentBackgroundContent.style.backgroundImage = backgroundImageURL;
}
}
// Don't transition between identical backgrounds. This
// prevents unwanted flicker.
let previousBackgroundHash = this.previousBackground ? this.previousBackground.getAttribute( 'data-background-hash' ) : null;
let currentBackgroundHash = currentBackground.getAttribute( 'data-background-hash' );
if( currentBackgroundHash && currentBackgroundHash === previousBackgroundHash && currentBackground !== this.previousBackground ) {
this.element.classList.add( 'no-transition' );
}
this.previousBackground = currentBackground;
}
// If there's a background brightness flag for this slide,
// bubble it to the .reveal container
if( currentSlide ) {
this.bubbleSlideContrastClassToElement( currentSlide, this.Reveal.getRevealElement() );
}
// Allow the first background to apply without transition
setTimeout( () => {
this.element.classList.remove( 'no-transition' );
}, 1 );
}
/**
* Updates the position of the parallax background based
* on the current slide index.
*/
updateParallax() {
let indices = this.Reveal.getIndices();
if( this.Reveal.getConfig().parallaxBackgroundImage ) {
let horizontalSlides = this.Reveal.getHorizontalSlides(),
verticalSlides = this.Reveal.getVerticalSlides();
let backgroundSize = this.element.style.backgroundSize.split( ' ' ),
backgroundWidth, backgroundHeight;
if( backgroundSize.length === 1 ) {
backgroundWidth = backgroundHeight = parseInt( backgroundSize[0], 10 );
}
else {
backgroundWidth = parseInt( backgroundSize[0], 10 );
backgroundHeight = parseInt( backgroundSize[1], 10 );
}
let slideWidth = this.element.offsetWidth,
horizontalSlideCount = horizontalSlides.length,
horizontalOffsetMultiplier,
horizontalOffset;
if( typeof this.Reveal.getConfig().parallaxBackgroundHorizontal === 'number' ) {
horizontalOffsetMultiplier = this.Reveal.getConfig().parallaxBackgroundHorizontal;
}
else {
horizontalOffsetMultiplier = horizontalSlideCount > 1 ? ( backgroundWidth - slideWidth ) / ( horizontalSlideCount-1 ) : 0;
}
horizontalOffset = horizontalOffsetMultiplier * indices.h * -1;
let slideHeight = this.element.offsetHeight,
verticalSlideCount = verticalSlides.length,
verticalOffsetMultiplier,
verticalOffset;
if( typeof this.Reveal.getConfig().parallaxBackgroundVertical === 'number' ) {
verticalOffsetMultiplier = this.Reveal.getConfig().parallaxBackgroundVertical;
}
else {
verticalOffsetMultiplier = ( backgroundHeight - slideHeight ) / ( verticalSlideCount-1 );
}
verticalOffset = verticalSlideCount > 0 ? verticalOffsetMultiplier * indices.v : 0;
this.element.style.backgroundPosition = horizontalOffset + 'px ' + -verticalOffset + 'px';
}
}
destroy() {
this.element.remove();
}
}

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import { queryAll } from '../utils/util.js'
import { isAndroid } from '../utils/device.js'
/**
* Manages our presentation controls. This includes both
* the built-in control arrows as well as event monitoring
* of any elements within the presentation with either of the
* following helper classes:
* - .navigate-up
* - .navigate-right
* - .navigate-down
* - .navigate-left
* - .navigate-next
* - .navigate-prev
*/
export default class Controls {
constructor( Reveal ) {
this.Reveal = Reveal;
this.onNavigateLeftClicked = this.onNavigateLeftClicked.bind( this );
this.onNavigateRightClicked = this.onNavigateRightClicked.bind( this );
this.onNavigateUpClicked = this.onNavigateUpClicked.bind( this );
this.onNavigateDownClicked = this.onNavigateDownClicked.bind( this );
this.onNavigatePrevClicked = this.onNavigatePrevClicked.bind( this );
this.onNavigateNextClicked = this.onNavigateNextClicked.bind( this );
}
render() {
const rtl = this.Reveal.getConfig().rtl;
const revealElement = this.Reveal.getRevealElement();
this.element = document.createElement( 'aside' );
this.element.className = 'controls';
this.element.innerHTML =
`<button class="navigate-left" aria-label="${ rtl ? 'next slide' : 'previous slide' }"><div class="controls-arrow"></div></button>
<button class="navigate-right" aria-label="${ rtl ? 'previous slide' : 'next slide' }"><div class="controls-arrow"></div></button>
<button class="navigate-up" aria-label="above slide"><div class="controls-arrow"></div></button>
<button class="navigate-down" aria-label="below slide"><div class="controls-arrow"></div></button>`;
this.Reveal.getRevealElement().appendChild( this.element );
// There can be multiple instances of controls throughout the page
this.controlsLeft = queryAll( revealElement, '.navigate-left' );
this.controlsRight = queryAll( revealElement, '.navigate-right' );
this.controlsUp = queryAll( revealElement, '.navigate-up' );
this.controlsDown = queryAll( revealElement, '.navigate-down' );
this.controlsPrev = queryAll( revealElement, '.navigate-prev' );
this.controlsNext = queryAll( revealElement, '.navigate-next' );
// The left, right and down arrows in the standard reveal.js controls
this.controlsRightArrow = this.element.querySelector( '.navigate-right' );
this.controlsLeftArrow = this.element.querySelector( '.navigate-left' );
this.controlsDownArrow = this.element.querySelector( '.navigate-down' );
}
/**
* Called when the reveal.js config is updated.
*/
configure( config, oldConfig ) {
this.element.style.display = config.controls ? 'block' : 'none';
this.element.setAttribute( 'data-controls-layout', config.controlsLayout );
this.element.setAttribute( 'data-controls-back-arrows', config.controlsBackArrows );
}
bind() {
// Listen to both touch and click events, in case the device
// supports both
let pointerEvents = [ 'touchstart', 'click' ];
// Only support touch for Android, fixes double navigations in
// stock browser
if( isAndroid ) {
pointerEvents = [ 'touchstart' ];
}
pointerEvents.forEach( eventName => {
this.controlsLeft.forEach( el => el.addEventListener( eventName, this.onNavigateLeftClicked, false ) );
this.controlsRight.forEach( el => el.addEventListener( eventName, this.onNavigateRightClicked, false ) );
this.controlsUp.forEach( el => el.addEventListener( eventName, this.onNavigateUpClicked, false ) );
this.controlsDown.forEach( el => el.addEventListener( eventName, this.onNavigateDownClicked, false ) );
this.controlsPrev.forEach( el => el.addEventListener( eventName, this.onNavigatePrevClicked, false ) );
this.controlsNext.forEach( el => el.addEventListener( eventName, this.onNavigateNextClicked, false ) );
} );
}
unbind() {
[ 'touchstart', 'click' ].forEach( eventName => {
this.controlsLeft.forEach( el => el.removeEventListener( eventName, this.onNavigateLeftClicked, false ) );
this.controlsRight.forEach( el => el.removeEventListener( eventName, this.onNavigateRightClicked, false ) );
this.controlsUp.forEach( el => el.removeEventListener( eventName, this.onNavigateUpClicked, false ) );
this.controlsDown.forEach( el => el.removeEventListener( eventName, this.onNavigateDownClicked, false ) );
this.controlsPrev.forEach( el => el.removeEventListener( eventName, this.onNavigatePrevClicked, false ) );
this.controlsNext.forEach( el => el.removeEventListener( eventName, this.onNavigateNextClicked, false ) );
} );
}
/**
* Updates the state of all control/navigation arrows.
*/
update() {
let routes = this.Reveal.availableRoutes();
// Remove the 'enabled' class from all directions
[...this.controlsLeft, ...this.controlsRight, ...this.controlsUp, ...this.controlsDown, ...this.controlsPrev, ...this.controlsNext].forEach( node => {
node.classList.remove( 'enabled', 'fragmented' );
// Set 'disabled' attribute on all directions
node.setAttribute( 'disabled', 'disabled' );
} );
// Add the 'enabled' class to the available routes; remove 'disabled' attribute to enable buttons
if( routes.left ) this.controlsLeft.forEach( el => { el.classList.add( 'enabled' ); el.removeAttribute( 'disabled' ); } );
if( routes.right ) this.controlsRight.forEach( el => { el.classList.add( 'enabled' ); el.removeAttribute( 'disabled' ); } );
if( routes.up ) this.controlsUp.forEach( el => { el.classList.add( 'enabled' ); el.removeAttribute( 'disabled' ); } );
if( routes.down ) this.controlsDown.forEach( el => { el.classList.add( 'enabled' ); el.removeAttribute( 'disabled' ); } );
// Prev/next buttons
if( routes.left || routes.up ) this.controlsPrev.forEach( el => { el.classList.add( 'enabled' ); el.removeAttribute( 'disabled' ); } );
if( routes.right || routes.down ) this.controlsNext.forEach( el => { el.classList.add( 'enabled' ); el.removeAttribute( 'disabled' ); } );
// Highlight fragment directions
let currentSlide = this.Reveal.getCurrentSlide();
if( currentSlide ) {
let fragmentsRoutes = this.Reveal.fragments.availableRoutes();
// Always apply fragment decorator to prev/next buttons
if( fragmentsRoutes.prev ) this.controlsPrev.forEach( el => { el.classList.add( 'fragmented', 'enabled' ); el.removeAttribute( 'disabled' ); } );
if( fragmentsRoutes.next ) this.controlsNext.forEach( el => { el.classList.add( 'fragmented', 'enabled' ); el.removeAttribute( 'disabled' ); } );
// Apply fragment decorators to directional buttons based on
// what slide axis they are in
if( this.Reveal.isVerticalSlide( currentSlide ) ) {
if( fragmentsRoutes.prev ) this.controlsUp.forEach( el => { el.classList.add( 'fragmented', 'enabled' ); el.removeAttribute( 'disabled' ); } );
if( fragmentsRoutes.next ) this.controlsDown.forEach( el => { el.classList.add( 'fragmented', 'enabled' ); el.removeAttribute( 'disabled' ); } );
}
else {
if( fragmentsRoutes.prev ) this.controlsLeft.forEach( el => { el.classList.add( 'fragmented', 'enabled' ); el.removeAttribute( 'disabled' ); } );
if( fragmentsRoutes.next ) this.controlsRight.forEach( el => { el.classList.add( 'fragmented', 'enabled' ); el.removeAttribute( 'disabled' ); } );
}
}
if( this.Reveal.getConfig().controlsTutorial ) {
let indices = this.Reveal.getIndices();
// Highlight control arrows with an animation to ensure
// that the viewer knows how to navigate
if( !this.Reveal.hasNavigatedVertically() && routes.down ) {
this.controlsDownArrow.classList.add( 'highlight' );
}
else {
this.controlsDownArrow.classList.remove( 'highlight' );
if( this.Reveal.getConfig().rtl ) {
if( !this.Reveal.hasNavigatedHorizontally() && routes.left && indices.v === 0 ) {
this.controlsLeftArrow.classList.add( 'highlight' );
}
else {
this.controlsLeftArrow.classList.remove( 'highlight' );
}
} else {
if( !this.Reveal.hasNavigatedHorizontally() && routes.right && indices.v === 0 ) {
this.controlsRightArrow.classList.add( 'highlight' );
}
else {
this.controlsRightArrow.classList.remove( 'highlight' );
}
}
}
}
}
destroy() {
this.unbind();
this.element.remove();
}
/**
* Event handlers for navigation control buttons.
*/
onNavigateLeftClicked( event ) {
event.preventDefault();
this.Reveal.onUserInput();
if( this.Reveal.getConfig().navigationMode === 'linear' ) {
this.Reveal.prev();
}
else {
this.Reveal.left();
}
}
onNavigateRightClicked( event ) {
event.preventDefault();
this.Reveal.onUserInput();
if( this.Reveal.getConfig().navigationMode === 'linear' ) {
this.Reveal.next();
}
else {
this.Reveal.right();
}
}
onNavigateUpClicked( event ) {
event.preventDefault();
this.Reveal.onUserInput();
this.Reveal.up();
}
onNavigateDownClicked( event ) {
event.preventDefault();
this.Reveal.onUserInput();
this.Reveal.down();
}
onNavigatePrevClicked( event ) {
event.preventDefault();
this.Reveal.onUserInput();
this.Reveal.prev();
}
onNavigateNextClicked( event ) {
event.preventDefault();
this.Reveal.onUserInput();
this.Reveal.next();
}
}

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import { closest } from '../utils/util.js'
/**
* Manages focus when a presentation is embedded. This
* helps us only capture keyboard from the presentation
* a user is currently interacting with in a page where
* multiple presentations are embedded.
*/
const STATE_FOCUS = 'focus';
const STATE_BLUR = 'blur';
export default class Focus {
constructor( Reveal ) {
this.Reveal = Reveal;
this.onRevealPointerDown = this.onRevealPointerDown.bind( this );
this.onDocumentPointerDown = this.onDocumentPointerDown.bind( this );
}
/**
* Called when the reveal.js config is updated.
*/
configure( config, oldConfig ) {
if( config.embedded ) {
this.blur();
}
else {
this.focus();
this.unbind();
}
}
bind() {
if( this.Reveal.getConfig().embedded ) {
this.Reveal.getRevealElement().addEventListener( 'pointerdown', this.onRevealPointerDown, false );
}
}
unbind() {
this.Reveal.getRevealElement().removeEventListener( 'pointerdown', this.onRevealPointerDown, false );
document.removeEventListener( 'pointerdown', this.onDocumentPointerDown, false );
}
focus() {
if( this.state !== STATE_FOCUS ) {
this.Reveal.getRevealElement().classList.add( 'focused' );
document.addEventListener( 'pointerdown', this.onDocumentPointerDown, false );
}
this.state = STATE_FOCUS;
}
blur() {
if( this.state !== STATE_BLUR ) {
this.Reveal.getRevealElement().classList.remove( 'focused' );
document.removeEventListener( 'pointerdown', this.onDocumentPointerDown, false );
}
this.state = STATE_BLUR;
}
isFocused() {
return this.state === STATE_FOCUS;
}
destroy() {
this.Reveal.getRevealElement().classList.remove( 'focused' );
}
onRevealPointerDown( event ) {
this.focus();
}
onDocumentPointerDown( event ) {
let revealElement = closest( event.target, '.reveal' );
if( !revealElement || revealElement !== this.Reveal.getRevealElement() ) {
this.blur();
}
}
}

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import { extend, queryAll } from '../utils/util.js'
/**
* Handles sorting and navigation of slide fragments.
* Fragments are elements within a slide that are
* revealed/animated incrementally.
*/
export default class Fragments {
constructor( Reveal ) {
this.Reveal = Reveal;
}
/**
* Called when the reveal.js config is updated.
*/
configure( config, oldConfig ) {
if( config.fragments === false ) {
this.disable();
}
else if( oldConfig.fragments === false ) {
this.enable();
}
}
/**
* If fragments are disabled in the deck, they should all be
* visible rather than stepped through.
*/
disable() {
queryAll( this.Reveal.getSlidesElement(), '.fragment' ).forEach( element => {
element.classList.add( 'visible' );
element.classList.remove( 'current-fragment' );
} );
}
/**
* Reverse of #disable(). Only called if fragments have
* previously been disabled.
*/
enable() {
queryAll( this.Reveal.getSlidesElement(), '.fragment' ).forEach( element => {
element.classList.remove( 'visible' );
element.classList.remove( 'current-fragment' );
} );
}
/**
* Returns an object describing the available fragment
* directions.
*
* @return {{prev: boolean, next: boolean}}
*/
availableRoutes() {
let currentSlide = this.Reveal.getCurrentSlide();
if( currentSlide && this.Reveal.getConfig().fragments ) {
let fragments = currentSlide.querySelectorAll( '.fragment:not(.disabled)' );
let hiddenFragments = currentSlide.querySelectorAll( '.fragment:not(.disabled):not(.visible)' );
return {
prev: fragments.length - hiddenFragments.length > 0,
next: !!hiddenFragments.length
};
}
else {
return { prev: false, next: false };
}
}
/**
* Return a sorted fragments list, ordered by an increasing
* "data-fragment-index" attribute.
*
* Fragments will be revealed in the order that they are returned by
* this function, so you can use the index attributes to control the
* order of fragment appearance.
*
* To maintain a sensible default fragment order, fragments are presumed
* to be passed in document order. This function adds a "fragment-index"
* attribute to each node if such an attribute is not already present,
* and sets that attribute to an integer value which is the position of
* the fragment within the fragments list.
*
* @param {object[]|*} fragments
* @param {boolean} grouped If true the returned array will contain
* nested arrays for all fragments with the same index
* @return {object[]} sorted Sorted array of fragments
*/
sort( fragments, grouped = false ) {
fragments = Array.from( fragments );
let ordered = [],
unordered = [],
sorted = [];
// Group ordered and unordered elements
fragments.forEach( fragment => {
if( fragment.hasAttribute( 'data-fragment-index' ) ) {
let index = parseInt( fragment.getAttribute( 'data-fragment-index' ), 10 );
if( !ordered[index] ) {
ordered[index] = [];
}
ordered[index].push( fragment );
}
else {
unordered.push( [ fragment ] );
}
} );
// Append fragments without explicit indices in their
// DOM order
ordered = ordered.concat( unordered );
// Manually count the index up per group to ensure there
// are no gaps
let index = 0;
// Push all fragments in their sorted order to an array,
// this flattens the groups
ordered.forEach( group => {
group.forEach( fragment => {
sorted.push( fragment );
fragment.setAttribute( 'data-fragment-index', index );
} );
index ++;
} );
return grouped === true ? ordered : sorted;
}
/**
* Sorts and formats all of fragments in the
* presentation.
*/
sortAll() {
this.Reveal.getHorizontalSlides().forEach( horizontalSlide => {
let verticalSlides = queryAll( horizontalSlide, 'section' );
verticalSlides.forEach( ( verticalSlide, y ) => {
this.sort( verticalSlide.querySelectorAll( '.fragment' ) );
}, this );
if( verticalSlides.length === 0 ) this.sort( horizontalSlide.querySelectorAll( '.fragment' ) );
} );
}
/**
* Refreshes the fragments on the current slide so that they
* have the appropriate classes (.visible + .current-fragment).
*
* @param {number} [index] The index of the current fragment
* @param {array} [fragments] Array containing all fragments
* in the current slide
*
* @return {{shown: array, hidden: array}}
*/
update( index, fragments, slide = this.Reveal.getCurrentSlide() ) {
let changedFragments = {
shown: [],
hidden: []
};
if( slide && this.Reveal.getConfig().fragments ) {
fragments = fragments || this.sort( slide.querySelectorAll( '.fragment' ) );
if( fragments.length ) {
let maxIndex = 0;
if( typeof index !== 'number' ) {
let currentFragment = this.sort( slide.querySelectorAll( '.fragment.visible' ) ).pop();
if( currentFragment ) {
index = parseInt( currentFragment.getAttribute( 'data-fragment-index' ) || 0, 10 );
}
}
Array.from( fragments ).forEach( ( el, i ) => {
if( el.hasAttribute( 'data-fragment-index' ) ) {
i = parseInt( el.getAttribute( 'data-fragment-index' ), 10 );
}
maxIndex = Math.max( maxIndex, i );
// Visible fragments
if( i <= index ) {
let wasVisible = el.classList.contains( 'visible' )
el.classList.add( 'visible' );
el.classList.remove( 'current-fragment' );
if( i === index ) {
// Announce the fragments one by one to the Screen Reader
this.Reveal.announceStatus( this.Reveal.getStatusText( el ) );
el.classList.add( 'current-fragment' );
this.Reveal.slideContent.startEmbeddedContent( el );
}
if( !wasVisible ) {
changedFragments.shown.push( el )
this.Reveal.dispatchEvent({
target: el,
type: 'visible',
bubbles: false
});
}
}
// Hidden fragments
else {
let wasVisible = el.classList.contains( 'visible' )
el.classList.remove( 'visible' );
el.classList.remove( 'current-fragment' );
if( wasVisible ) {
this.Reveal.slideContent.stopEmbeddedContent( el );
changedFragments.hidden.push( el );
this.Reveal.dispatchEvent({
target: el,
type: 'hidden',
bubbles: false
});
}
}
} );
// Write the current fragment index to the slide <section>.
// This can be used by end users to apply styles based on
// the current fragment index.
index = typeof index === 'number' ? index : -1;
index = Math.max( Math.min( index, maxIndex ), -1 );
slide.setAttribute( 'data-fragment', index );
}
}
return changedFragments;
}
/**
* Formats the fragments on the given slide so that they have
* valid indices. Call this if fragments are changed in the DOM
* after reveal.js has already initialized.
*
* @param {HTMLElement} slide
* @return {Array} a list of the HTML fragments that were synced
*/
sync( slide = this.Reveal.getCurrentSlide() ) {
return this.sort( slide.querySelectorAll( '.fragment' ) );
}
/**
* Navigate to the specified slide fragment.
*
* @param {?number} index The index of the fragment that
* should be shown, -1 means all are invisible
* @param {number} offset Integer offset to apply to the
* fragment index
*
* @return {boolean} true if a change was made in any
* fragments visibility as part of this call
*/
goto( index, offset = 0 ) {
let currentSlide = this.Reveal.getCurrentSlide();
if( currentSlide && this.Reveal.getConfig().fragments ) {
let fragments = this.sort( currentSlide.querySelectorAll( '.fragment:not(.disabled)' ) );
if( fragments.length ) {
// If no index is specified, find the current
if( typeof index !== 'number' ) {
let lastVisibleFragment = this.sort( currentSlide.querySelectorAll( '.fragment:not(.disabled).visible' ) ).pop();
if( lastVisibleFragment ) {
index = parseInt( lastVisibleFragment.getAttribute( 'data-fragment-index' ) || 0, 10 );
}
else {
index = -1;
}
}
// Apply the offset if there is one
index += offset;
let changedFragments = this.update( index, fragments );
if( changedFragments.hidden.length ) {
this.Reveal.dispatchEvent({
type: 'fragmenthidden',
data: {
fragment: changedFragments.hidden[0],
fragments: changedFragments.hidden
}
});
}
if( changedFragments.shown.length ) {
this.Reveal.dispatchEvent({
type: 'fragmentshown',
data: {
fragment: changedFragments.shown[0],
fragments: changedFragments.shown
}
});
}
this.Reveal.controls.update();
this.Reveal.progress.update();
if( this.Reveal.getConfig().fragmentInURL ) {
this.Reveal.location.writeURL();
}
return !!( changedFragments.shown.length || changedFragments.hidden.length );
}
}
return false;
}
/**
* Navigate to the next slide fragment.
*
* @return {boolean} true if there was a next fragment,
* false otherwise
*/
next() {
return this.goto( null, 1 );
}
/**
* Navigate to the previous slide fragment.
*
* @return {boolean} true if there was a previous fragment,
* false otherwise
*/
prev() {
return this.goto( null, -1 );
}
}

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import {
SLIDE_NUMBER_FORMAT_CURRENT,
SLIDE_NUMBER_FORMAT_CURRENT_SLASH_TOTAL
} from "../utils/constants";
/**
* Makes it possible to jump to a slide by entering its
* slide number or id.
*/
export default class JumpToSlide {
constructor( Reveal ) {
this.Reveal = Reveal;
this.onInput = this.onInput.bind( this );
this.onBlur = this.onBlur.bind( this );
this.onKeyDown = this.onKeyDown.bind( this );
}
render() {
this.element = document.createElement( 'div' );
this.element.className = 'jump-to-slide';
this.jumpInput = document.createElement( 'input' );
this.jumpInput.type = 'text';
this.jumpInput.className = 'jump-to-slide-input';
this.jumpInput.placeholder = 'Jump to slide';
this.jumpInput.addEventListener( 'input', this.onInput );
this.jumpInput.addEventListener( 'keydown', this.onKeyDown );
this.jumpInput.addEventListener( 'blur', this.onBlur );
this.element.appendChild( this.jumpInput );
}
show() {
this.indicesOnShow = this.Reveal.getIndices();
this.Reveal.getRevealElement().appendChild( this.element );
this.jumpInput.focus();
}
hide() {
if( this.isVisible() ) {
this.element.remove();
this.jumpInput.value = '';
clearTimeout( this.jumpTimeout );
delete this.jumpTimeout;
}
}
isVisible() {
return !!this.element.parentNode;
}
/**
* Parses the current input and jumps to the given slide.
*/
jump() {
clearTimeout( this.jumpTimeout );
delete this.jumpTimeout;
let query = this.jumpInput.value.trim( '' );
let indices;
// When slide numbers are formatted to be a single linear mumber
// (instead of showing a separate horizontal/vertical index) we
// use the same format for slide jumps
if( /^\d+$/.test( query ) ) {
const slideNumberFormat = this.Reveal.getConfig().slideNumber;
if( slideNumberFormat === SLIDE_NUMBER_FORMAT_CURRENT || slideNumberFormat === SLIDE_NUMBER_FORMAT_CURRENT_SLASH_TOTAL ) {
const slide = this.Reveal.getSlides()[ parseInt( query, 10 ) - 1 ];
if( slide ) {
indices = this.Reveal.getIndices( slide );
}
}
}
if( !indices ) {
// If the query uses "horizontal.vertical" format, convert to
// "horizontal/vertical" so that our URL parser can understand
if( /^\d+\.\d+$/.test( query ) ) {
query = query.replace( '.', '/' );
}
indices = this.Reveal.location.getIndicesFromHash( query, { oneBasedIndex: true } );
}
// Still no valid index? Fall back on a text search
if( !indices && /\S+/i.test( query ) && query.length > 1 ) {
indices = this.search( query );
}
if( indices && query !== '' ) {
this.Reveal.slide( indices.h, indices.v, indices.f );
return true;
}
else {
this.Reveal.slide( this.indicesOnShow.h, this.indicesOnShow.v, this.indicesOnShow.f );
return false;
}
}
jumpAfter( delay ) {
clearTimeout( this.jumpTimeout );
this.jumpTimeout = setTimeout( () => this.jump(), delay );
}
/**
* A lofi search that looks for the given query in all
* of our slides and returns the first match.
*/
search( query ) {
const regex = new RegExp( '\\b' + query.trim() + '\\b', 'i' );
const slide = this.Reveal.getSlides().find( ( slide ) => {
return regex.test( slide.innerText );
} );
if( slide ) {
return this.Reveal.getIndices( slide );
}
else {
return null;
}
}
/**
* Reverts back to the slide we were on when jump to slide was
* invoked.
*/
cancel() {
this.Reveal.slide( this.indicesOnShow.h, this.indicesOnShow.v, this.indicesOnShow.f );
this.hide();
}
confirm() {
this.jump();
this.hide();
}
destroy() {
this.jumpInput.removeEventListener( 'input', this.onInput );
this.jumpInput.removeEventListener( 'keydown', this.onKeyDown );
this.jumpInput.removeEventListener( 'blur', this.onBlur );
this.element.remove();
}
onKeyDown( event ) {
if( event.keyCode === 13 ) {
this.confirm();
}
else if( event.keyCode === 27 ) {
this.cancel();
event.stopImmediatePropagation();
}
}
onInput( event ) {
this.jumpAfter( 200 );
}
onBlur() {
setTimeout( () => this.hide(), 1 );
}
}

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import { enterFullscreen } from '../utils/util.js'
/**
* Handles all reveal.js keyboard interactions.
*/
export default class Keyboard {
constructor( Reveal ) {
this.Reveal = Reveal;
// A key:value map of keyboard keys and descriptions of
// the actions they trigger
this.shortcuts = {};
// Holds custom key code mappings
this.bindings = {};
this.onDocumentKeyDown = this.onDocumentKeyDown.bind( this );
}
/**
* Called when the reveal.js config is updated.
*/
configure( config, oldConfig ) {
if( config.navigationMode === 'linear' ) {
this.shortcuts['&#8594; , &#8595; , SPACE , N , L , J'] = 'Next slide';
this.shortcuts['&#8592; , &#8593; , P , H , K'] = 'Previous slide';
}
else {
this.shortcuts['N , SPACE'] = 'Next slide';
this.shortcuts['P , Shift SPACE'] = 'Previous slide';
this.shortcuts['&#8592; , H'] = 'Navigate left';
this.shortcuts['&#8594; , L'] = 'Navigate right';
this.shortcuts['&#8593; , K'] = 'Navigate up';
this.shortcuts['&#8595; , J'] = 'Navigate down';
}
this.shortcuts['Alt + &#8592;/&#8593/&#8594;/&#8595;'] = 'Navigate without fragments';
this.shortcuts['Shift + &#8592;/&#8593/&#8594;/&#8595;'] = 'Jump to first/last slide';
this.shortcuts['B , .'] = 'Pause';
this.shortcuts['F'] = 'Fullscreen';
this.shortcuts['G'] = 'Jump to slide';
this.shortcuts['ESC, O'] = 'Slide overview';
}
/**
* Starts listening for keyboard events.
*/
bind() {
document.addEventListener( 'keydown', this.onDocumentKeyDown, false );
}
/**
* Stops listening for keyboard events.
*/
unbind() {
document.removeEventListener( 'keydown', this.onDocumentKeyDown, false );
}
/**
* Add a custom key binding with optional description to
* be added to the help screen.
*/
addKeyBinding( binding, callback ) {
if( typeof binding === 'object' && binding.keyCode ) {
this.bindings[binding.keyCode] = {
callback: callback,
key: binding.key,
description: binding.description
};
}
else {
this.bindings[binding] = {
callback: callback,
key: null,
description: null
};
}
}
/**
* Removes the specified custom key binding.
*/
removeKeyBinding( keyCode ) {
delete this.bindings[keyCode];
}
/**
* Programmatically triggers a keyboard event
*
* @param {int} keyCode
*/
triggerKey( keyCode ) {
this.onDocumentKeyDown( { keyCode } );
}
/**
* Registers a new shortcut to include in the help overlay
*
* @param {String} key
* @param {String} value
*/
registerKeyboardShortcut( key, value ) {
this.shortcuts[key] = value;
}
getShortcuts() {
return this.shortcuts;
}
getBindings() {
return this.bindings;
}
/**
* Handler for the document level 'keydown' event.
*
* @param {object} event
*/
onDocumentKeyDown( event ) {
let config = this.Reveal.getConfig();
// If there's a condition specified and it returns false,
// ignore this event
if( typeof config.keyboardCondition === 'function' && config.keyboardCondition(event) === false ) {
return true;
}
// If keyboardCondition is set, only capture keyboard events
// for embedded decks when they are focused
if( config.keyboardCondition === 'focused' && !this.Reveal.isFocused() ) {
return true;
}
// Shorthand
let keyCode = event.keyCode;
// Remember if auto-sliding was paused so we can toggle it
let autoSlideWasPaused = !this.Reveal.isAutoSliding();
this.Reveal.onUserInput( event );
// Is there a focused element that could be using the keyboard?
let activeElementIsCE = document.activeElement && document.activeElement.isContentEditable === true;
let activeElementIsInput = document.activeElement && document.activeElement.tagName && /input|textarea/i.test( document.activeElement.tagName );
let activeElementIsNotes = document.activeElement && document.activeElement.className && /speaker-notes/i.test( document.activeElement.className);
// Whitelist certain modifiers for slide navigation shortcuts
let keyCodeUsesModifier = [32, 37, 38, 39, 40, 78, 80, 191].indexOf( event.keyCode ) !== -1;
// Prevent all other events when a modifier is pressed
let unusedModifier = !( keyCodeUsesModifier && event.shiftKey || event.altKey ) &&
( event.shiftKey || event.altKey || event.ctrlKey || event.metaKey );
// Disregard the event if there's a focused element or a
// keyboard modifier key is present
if( activeElementIsCE || activeElementIsInput || activeElementIsNotes || unusedModifier ) return;
// While paused only allow resume keyboard events; 'b', 'v', '.'
let resumeKeyCodes = [66,86,190,191];
let key;
// Custom key bindings for togglePause should be able to resume
if( typeof config.keyboard === 'object' ) {
for( key in config.keyboard ) {
if( config.keyboard[key] === 'togglePause' ) {
resumeKeyCodes.push( parseInt( key, 10 ) );
}
}
}
if( this.Reveal.isPaused() && resumeKeyCodes.indexOf( keyCode ) === -1 ) {
return false;
}
// Use linear navigation if we're configured to OR if
// the presentation is one-dimensional
let useLinearMode = config.navigationMode === 'linear' || !this.Reveal.hasHorizontalSlides() || !this.Reveal.hasVerticalSlides();
let triggered = false;
// 1. User defined key bindings
if( typeof config.keyboard === 'object' ) {
for( key in config.keyboard ) {
// Check if this binding matches the pressed key
if( parseInt( key, 10 ) === keyCode ) {
let value = config.keyboard[ key ];
// Callback function
if( typeof value === 'function' ) {
value.apply( null, [ event ] );
}
// String shortcuts to reveal.js API
else if( typeof value === 'string' && typeof this.Reveal[ value ] === 'function' ) {
this.Reveal[ value ].call();
}
triggered = true;
}
}
}
// 2. Registered custom key bindings
if( triggered === false ) {
for( key in this.bindings ) {
// Check if this binding matches the pressed key
if( parseInt( key, 10 ) === keyCode ) {
let action = this.bindings[ key ].callback;
// Callback function
if( typeof action === 'function' ) {
action.apply( null, [ event ] );
}
// String shortcuts to reveal.js API
else if( typeof action === 'string' && typeof this.Reveal[ action ] === 'function' ) {
this.Reveal[ action ].call();
}
triggered = true;
}
}
}
// 3. System defined key bindings
if( triggered === false ) {
// Assume true and try to prove false
triggered = true;
// P, PAGE UP
if( keyCode === 80 || keyCode === 33 ) {
this.Reveal.prev({skipFragments: event.altKey});
}
// N, PAGE DOWN
else if( keyCode === 78 || keyCode === 34 ) {
this.Reveal.next({skipFragments: event.altKey});
}
// H, LEFT
else if( keyCode === 72 || keyCode === 37 ) {
if( event.shiftKey ) {
this.Reveal.slide( 0 );
}
else if( !this.Reveal.overview.isActive() && useLinearMode ) {
this.Reveal.prev({skipFragments: event.altKey});
}
else {
this.Reveal.left({skipFragments: event.altKey});
}
}
// L, RIGHT
else if( keyCode === 76 || keyCode === 39 ) {
if( event.shiftKey ) {
this.Reveal.slide( this.Reveal.getHorizontalSlides().length - 1 );
}
else if( !this.Reveal.overview.isActive() && useLinearMode ) {
this.Reveal.next({skipFragments: event.altKey});
}
else {
this.Reveal.right({skipFragments: event.altKey});
}
}
// K, UP
else if( keyCode === 75 || keyCode === 38 ) {
if( event.shiftKey ) {
this.Reveal.slide( undefined, 0 );
}
else if( !this.Reveal.overview.isActive() && useLinearMode ) {
this.Reveal.prev({skipFragments: event.altKey});
}
else {
this.Reveal.up({skipFragments: event.altKey});
}
}
// J, DOWN
else if( keyCode === 74 || keyCode === 40 ) {
if( event.shiftKey ) {
this.Reveal.slide( undefined, Number.MAX_VALUE );
}
else if( !this.Reveal.overview.isActive() && useLinearMode ) {
this.Reveal.next({skipFragments: event.altKey});
}
else {
this.Reveal.down({skipFragments: event.altKey});
}
}
// HOME
else if( keyCode === 36 ) {
this.Reveal.slide( 0 );
}
// END
else if( keyCode === 35 ) {
this.Reveal.slide( this.Reveal.getHorizontalSlides().length - 1 );
}
// SPACE
else if( keyCode === 32 ) {
if( this.Reveal.overview.isActive() ) {
this.Reveal.overview.deactivate();
}
if( event.shiftKey ) {
this.Reveal.prev({skipFragments: event.altKey});
}
else {
this.Reveal.next({skipFragments: event.altKey});
}
}
// TWO-SPOT, SEMICOLON, B, V, PERIOD, LOGITECH PRESENTER TOOLS "BLACK SCREEN" BUTTON
else if( [58, 59, 66, 86, 190].includes( keyCode ) || ( keyCode === 191 && !event.shiftKey ) ) {
this.Reveal.togglePause();
}
// F
else if( keyCode === 70 ) {
enterFullscreen( config.embedded ? this.Reveal.getViewportElement() : document.documentElement );
}
// A
else if( keyCode === 65 ) {
if( config.autoSlideStoppable ) {
this.Reveal.toggleAutoSlide( autoSlideWasPaused );
}
}
// G
else if( keyCode === 71 ) {
if( config.jumpToSlide ) {
this.Reveal.toggleJumpToSlide();
}
}
// ?
else if( keyCode === 191 && event.shiftKey ) {
this.Reveal.toggleHelp();
}
else {
triggered = false;
}
}
// If the input resulted in a triggered action we should prevent
// the browsers default behavior
if( triggered ) {
event.preventDefault && event.preventDefault();
}
// ESC or O key
else if( keyCode === 27 || keyCode === 79 ) {
if( this.Reveal.closeOverlay() === false ) {
this.Reveal.overview.toggle();
}
event.preventDefault && event.preventDefault();
}
// If auto-sliding is enabled we need to cue up
// another timeout
this.Reveal.cueAutoSlide();
}
}

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/**
* Reads and writes the URL based on reveal.js' current state.
*/
export default class Location {
// The minimum number of milliseconds that must pass between
// calls to history.replaceState
MAX_REPLACE_STATE_FREQUENCY = 1000
constructor( Reveal ) {
this.Reveal = Reveal;
// Delays updates to the URL due to a Chrome thumbnailer bug
this.writeURLTimeout = 0;
this.replaceStateTimestamp = 0;
this.onWindowHashChange = this.onWindowHashChange.bind( this );
}
bind() {
window.addEventListener( 'hashchange', this.onWindowHashChange, false );
}
unbind() {
window.removeEventListener( 'hashchange', this.onWindowHashChange, false );
}
/**
* Returns the slide indices for the given hash link.
*
* @param {string} [hash] the hash string that we want to
* find the indices for
*
* @returns slide indices or null
*/
getIndicesFromHash( hash=window.location.hash, options={} ) {
// Attempt to parse the hash as either an index or name
let name = hash.replace( /^#\/?/, '' );
let bits = name.split( '/' );
// If the first bit is not fully numeric and there is a name we
// can assume that this is a named link
if( !/^[0-9]*$/.test( bits[0] ) && name.length ) {
let slide;
let f;
// Parse named links with fragments (#/named-link/2)
if( /\/[-\d]+$/g.test( name ) ) {
f = parseInt( name.split( '/' ).pop(), 10 );
f = isNaN(f) ? undefined : f;
name = name.split( '/' ).shift();
}
// Ensure the named link is a valid HTML ID attribute
try {
slide = document
.getElementById( decodeURIComponent( name ) )
.closest('.slides section');
}
catch ( error ) { }
if( slide ) {
return { ...this.Reveal.getIndices( slide ), f };
}
}
else {
const config = this.Reveal.getConfig();
let hashIndexBase = config.hashOneBasedIndex || options.oneBasedIndex ? 1 : 0;
// Read the index components of the hash
let h = ( parseInt( bits[0], 10 ) - hashIndexBase ) || 0,
v = ( parseInt( bits[1], 10 ) - hashIndexBase ) || 0,
f;
if( config.fragmentInURL ) {
f = parseInt( bits[2], 10 );
if( isNaN( f ) ) {
f = undefined;
}
}
return { h, v, f };
}
// The hash couldn't be parsed or no matching named link was found
return null
}
/**
* Reads the current URL (hash) and navigates accordingly.
*/
readURL() {
const currentIndices = this.Reveal.getIndices();
const newIndices = this.getIndicesFromHash();
if( newIndices ) {
if( ( newIndices.h !== currentIndices.h || newIndices.v !== currentIndices.v || newIndices.f !== undefined ) ) {
this.Reveal.slide( newIndices.h, newIndices.v, newIndices.f );
}
}
// If no new indices are available, we're trying to navigate to
// a slide hash that does not exist
else {
this.Reveal.slide( currentIndices.h || 0, currentIndices.v || 0 );
}
}
/**
* Updates the page URL (hash) to reflect the current
* state.
*
* @param {number} delay The time in ms to wait before
* writing the hash
*/
writeURL( delay ) {
let config = this.Reveal.getConfig();
let currentSlide = this.Reveal.getCurrentSlide();
// Make sure there's never more than one timeout running
clearTimeout( this.writeURLTimeout );
// If a delay is specified, timeout this call
if( typeof delay === 'number' ) {
this.writeURLTimeout = setTimeout( this.writeURL, delay );
}
else if( currentSlide ) {
let hash = this.getHash();
// If we're configured to push to history OR the history
// API is not available.
if( config.history ) {
window.location.hash = hash;
}
// If we're configured to reflect the current slide in the
// URL without pushing to history.
else if( config.hash ) {
// If the hash is empty, don't add it to the URL
if( hash === '/' ) {
this.debouncedReplaceState( window.location.pathname + window.location.search );
}
else {
this.debouncedReplaceState( '#' + hash );
}
}
// UPDATE: The below nuking of all hash changes breaks
// anchors on pages where reveal.js is running. Removed
// in 4.0. Why was it here in the first place? ¯\_(ツ)_/¯
//
// If history and hash are both disabled, a hash may still
// be added to the URL by clicking on a href with a hash
// target. Counter this by always removing the hash.
// else {
// window.history.replaceState( null, null, window.location.pathname + window.location.search );
// }
}
}
replaceState( url ) {
window.history.replaceState( null, null, url );
this.replaceStateTimestamp = Date.now();
}
debouncedReplaceState( url ) {
clearTimeout( this.replaceStateTimeout );
if( Date.now() - this.replaceStateTimestamp > this.MAX_REPLACE_STATE_FREQUENCY ) {
this.replaceState( url );
}
else {
this.replaceStateTimeout = setTimeout( () => this.replaceState( url ), this.MAX_REPLACE_STATE_FREQUENCY );
}
}
/**
* Return a hash URL that will resolve to the given slide location.
*
* @param {HTMLElement} [slide=currentSlide] The slide to link to
*/
getHash( slide ) {
let url = '/';
// Attempt to create a named link based on the slide's ID
let s = slide || this.Reveal.getCurrentSlide();
let id = s ? s.getAttribute( 'id' ) : null;
if( id ) {
id = encodeURIComponent( id );
}
let index = this.Reveal.getIndices( slide );
if( !this.Reveal.getConfig().fragmentInURL ) {
index.f = undefined;
}
// If the current slide has an ID, use that as a named link,
// but we don't support named links with a fragment index
if( typeof id === 'string' && id.length ) {
url = '/' + id;
// If there is also a fragment, append that at the end
// of the named link, like: #/named-link/2
if( index.f >= 0 ) url += '/' + index.f;
}
// Otherwise use the /h/v index
else {
let hashIndexBase = this.Reveal.getConfig().hashOneBasedIndex ? 1 : 0;
if( index.h > 0 || index.v > 0 || index.f >= 0 ) url += index.h + hashIndexBase;
if( index.v > 0 || index.f >= 0 ) url += '/' + (index.v + hashIndexBase );
if( index.f >= 0 ) url += '/' + index.f;
}
return url;
}
/**
* Handler for the window level 'hashchange' event.
*
* @param {object} [event]
*/
onWindowHashChange( event ) {
this.readURL();
}
}

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/**
* Handles the showing of speaker notes
*/
export default class Notes {
constructor( Reveal ) {
this.Reveal = Reveal;
}
render() {
this.element = document.createElement( 'div' );
this.element.className = 'speaker-notes';
this.element.setAttribute( 'data-prevent-swipe', '' );
this.element.setAttribute( 'tabindex', '0' );
this.Reveal.getRevealElement().appendChild( this.element );
}
/**
* Called when the reveal.js config is updated.
*/
configure( config, oldConfig ) {
if( config.showNotes ) {
this.element.setAttribute( 'data-layout', typeof config.showNotes === 'string' ? config.showNotes : 'inline' );
}
}
/**
* Pick up notes from the current slide and display them
* to the viewer.
*
* @see {@link config.showNotes}
*/
update() {
if( this.Reveal.getConfig().showNotes &&
this.element && this.Reveal.getCurrentSlide() &&
!this.Reveal.isScrollView() &&
!this.Reveal.isPrintView()
) {
this.element.innerHTML = this.getSlideNotes() || '<span class="notes-placeholder">No notes on this slide.</span>';
}
}
/**
* Updates the visibility of the speaker notes sidebar that
* is used to share annotated slides. The notes sidebar is
* only visible if showNotes is true and there are notes on
* one or more slides in the deck.
*/
updateVisibility() {
if( this.Reveal.getConfig().showNotes &&
this.hasNotes() &&
!this.Reveal.isScrollView() &&
!this.Reveal.isPrintView()
) {
this.Reveal.getRevealElement().classList.add( 'show-notes' );
}
else {
this.Reveal.getRevealElement().classList.remove( 'show-notes' );
}
}
/**
* Checks if there are speaker notes for ANY slide in the
* presentation.
*/
hasNotes() {
return this.Reveal.getSlidesElement().querySelectorAll( '[data-notes], aside.notes' ).length > 0;
}
/**
* Checks if this presentation is running inside of the
* speaker notes window.
*
* @return {boolean}
*/
isSpeakerNotesWindow() {
return !!window.location.search.match( /receiver/gi );
}
/**
* Retrieves the speaker notes from a slide. Notes can be
* defined in two ways:
* 1. As a data-notes attribute on the slide <section>
* 2. With <aside class="notes"> elements inside the slide
*
* @param {HTMLElement} [slide=currentSlide]
* @return {(string|null)}
*/
getSlideNotes( slide = this.Reveal.getCurrentSlide() ) {
// Notes can be specified via the data-notes attribute...
if( slide.hasAttribute( 'data-notes' ) ) {
return slide.getAttribute( 'data-notes' );
}
// ... or using <aside class="notes"> elements
let notesElements = slide.querySelectorAll( 'aside.notes' );
if( notesElements ) {
return Array.from(notesElements).map( notesElement => notesElement.innerHTML ).join( '\n' );
}
return null;
}
destroy() {
this.element.remove();
}
}

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import { SLIDES_SELECTOR } from '../utils/constants.js'
import { extend, queryAll, transformElement } from '../utils/util.js'
/**
* Handles all logic related to the overview mode
* (birds-eye view of all slides).
*/
export default class Overview {
constructor( Reveal ) {
this.Reveal = Reveal;
this.active = false;
this.onSlideClicked = this.onSlideClicked.bind( this );
}
/**
* Displays the overview of slides (quick nav) by scaling
* down and arranging all slide elements.
*/
activate() {
// Only proceed if enabled in config
if( this.Reveal.getConfig().overview && !this.Reveal.isScrollView() && !this.isActive() ) {
this.active = true;
this.Reveal.getRevealElement().classList.add( 'overview' );
// Don't auto-slide while in overview mode
this.Reveal.cancelAutoSlide();
// Move the backgrounds element into the slide container to
// that the same scaling is applied
this.Reveal.getSlidesElement().appendChild( this.Reveal.getBackgroundsElement() );
// Clicking on an overview slide navigates to it
queryAll( this.Reveal.getRevealElement(), SLIDES_SELECTOR ).forEach( slide => {
if( !slide.classList.contains( 'stack' ) ) {
slide.addEventListener( 'click', this.onSlideClicked, true );
}
} );
// Calculate slide sizes
const margin = 70;
const slideSize = this.Reveal.getComputedSlideSize();
this.overviewSlideWidth = slideSize.width + margin;
this.overviewSlideHeight = slideSize.height + margin;
// Reverse in RTL mode
if( this.Reveal.getConfig().rtl ) {
this.overviewSlideWidth = -this.overviewSlideWidth;
}
this.Reveal.updateSlidesVisibility();
this.layout();
this.update();
this.Reveal.layout();
const indices = this.Reveal.getIndices();
// Notify observers of the overview showing
this.Reveal.dispatchEvent({
type: 'overviewshown',
data: {
'indexh': indices.h,
'indexv': indices.v,
'currentSlide': this.Reveal.getCurrentSlide()
}
});
}
}
/**
* Uses CSS transforms to position all slides in a grid for
* display inside of the overview mode.
*/
layout() {
// Layout slides
this.Reveal.getHorizontalSlides().forEach( ( hslide, h ) => {
hslide.setAttribute( 'data-index-h', h );
transformElement( hslide, 'translate3d(' + ( h * this.overviewSlideWidth ) + 'px, 0, 0)' );
if( hslide.classList.contains( 'stack' ) ) {
queryAll( hslide, 'section' ).forEach( ( vslide, v ) => {
vslide.setAttribute( 'data-index-h', h );
vslide.setAttribute( 'data-index-v', v );
transformElement( vslide, 'translate3d(0, ' + ( v * this.overviewSlideHeight ) + 'px, 0)' );
} );
}
} );
// Layout slide backgrounds
Array.from( this.Reveal.getBackgroundsElement().childNodes ).forEach( ( hbackground, h ) => {
transformElement( hbackground, 'translate3d(' + ( h * this.overviewSlideWidth ) + 'px, 0, 0)' );
queryAll( hbackground, '.slide-background' ).forEach( ( vbackground, v ) => {
transformElement( vbackground, 'translate3d(0, ' + ( v * this.overviewSlideHeight ) + 'px, 0)' );
} );
} );
}
/**
* Moves the overview viewport to the current slides.
* Called each time the current slide changes.
*/
update() {
const vmin = Math.min( window.innerWidth, window.innerHeight );
const scale = Math.max( vmin / 5, 150 ) / vmin;
const indices = this.Reveal.getIndices();
this.Reveal.transformSlides( {
overview: [
'scale('+ scale +')',
'translateX('+ ( -indices.h * this.overviewSlideWidth ) +'px)',
'translateY('+ ( -indices.v * this.overviewSlideHeight ) +'px)'
].join( ' ' )
} );
}
/**
* Exits the slide overview and enters the currently
* active slide.
*/
deactivate() {
// Only proceed if enabled in config
if( this.Reveal.getConfig().overview ) {
this.active = false;
this.Reveal.getRevealElement().classList.remove( 'overview' );
// Temporarily add a class so that transitions can do different things
// depending on whether they are exiting/entering overview, or just
// moving from slide to slide
this.Reveal.getRevealElement().classList.add( 'overview-deactivating' );
setTimeout( () => {
this.Reveal.getRevealElement().classList.remove( 'overview-deactivating' );
}, 1 );
// Move the background element back out
this.Reveal.getRevealElement().appendChild( this.Reveal.getBackgroundsElement() );
// Clean up changes made to slides
queryAll( this.Reveal.getRevealElement(), SLIDES_SELECTOR ).forEach( slide => {
transformElement( slide, '' );
slide.removeEventListener( 'click', this.onSlideClicked, true );
} );
// Clean up changes made to backgrounds
queryAll( this.Reveal.getBackgroundsElement(), '.slide-background' ).forEach( background => {
transformElement( background, '' );
} );
this.Reveal.transformSlides( { overview: '' } );
const indices = this.Reveal.getIndices();
this.Reveal.slide( indices.h, indices.v );
this.Reveal.layout();
this.Reveal.cueAutoSlide();
// Notify observers of the overview hiding
this.Reveal.dispatchEvent({
type: 'overviewhidden',
data: {
'indexh': indices.h,
'indexv': indices.v,
'currentSlide': this.Reveal.getCurrentSlide()
}
});
}
}
/**
* Toggles the slide overview mode on and off.
*
* @param {Boolean} [override] Flag which overrides the
* toggle logic and forcibly sets the desired state. True means
* overview is open, false means it's closed.
*/
toggle( override ) {
if( typeof override === 'boolean' ) {
override ? this.activate() : this.deactivate();
}
else {
this.isActive() ? this.deactivate() : this.activate();
}
}
/**
* Checks if the overview is currently active.
*
* @return {Boolean} true if the overview is active,
* false otherwise
*/
isActive() {
return this.active;
}
/**
* Invoked when a slide is and we're in the overview.
*
* @param {object} event
*/
onSlideClicked( event ) {
if( this.isActive() ) {
event.preventDefault();
let element = event.target;
while( element && !element.nodeName.match( /section/gi ) ) {
element = element.parentNode;
}
if( element && !element.classList.contains( 'disabled' ) ) {
this.deactivate();
if( element.nodeName.match( /section/gi ) ) {
let h = parseInt( element.getAttribute( 'data-index-h' ), 10 ),
v = parseInt( element.getAttribute( 'data-index-v' ), 10 );
this.Reveal.slide( h, v );
}
}
}
}
}

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import { loadScript } from '../utils/loader.js'
/**
* Manages loading and registering of reveal.js plugins.
*/
export default class Plugins {
constructor( reveal ) {
this.Reveal = reveal;
// Flags our current state (idle -> loading -> loaded)
this.state = 'idle';
// An id:instance map of currently registered plugins
this.registeredPlugins = {};
this.asyncDependencies = [];
}
/**
* Loads reveal.js dependencies, registers and
* initializes plugins.
*
* Plugins are direct references to a reveal.js plugin
* object that we register and initialize after any
* synchronous dependencies have loaded.
*
* Dependencies are defined via the 'dependencies' config
* option and will be loaded prior to starting reveal.js.
* Some dependencies may have an 'async' flag, if so they
* will load after reveal.js has been started up.
*/
load( plugins, dependencies ) {
this.state = 'loading';
plugins.forEach( this.registerPlugin.bind( this ) );
return new Promise( resolve => {
let scripts = [],
scriptsToLoad = 0;
dependencies.forEach( s => {
// Load if there's no condition or the condition is truthy
if( !s.condition || s.condition() ) {
if( s.async ) {
this.asyncDependencies.push( s );
}
else {
scripts.push( s );
}
}
} );
if( scripts.length ) {
scriptsToLoad = scripts.length;
const scriptLoadedCallback = (s) => {
if( s && typeof s.callback === 'function' ) s.callback();
if( --scriptsToLoad === 0 ) {
this.initPlugins().then( resolve );
}
};
// Load synchronous scripts
scripts.forEach( s => {
if( typeof s.id === 'string' ) {
this.registerPlugin( s );
scriptLoadedCallback( s );
}
else if( typeof s.src === 'string' ) {
loadScript( s.src, () => scriptLoadedCallback(s) );
}
else {
console.warn( 'Unrecognized plugin format', s );
scriptLoadedCallback();
}
} );
}
else {
this.initPlugins().then( resolve );
}
} );
}
/**
* Initializes our plugins and waits for them to be ready
* before proceeding.
*/
initPlugins() {
return new Promise( resolve => {
let pluginValues = Object.values( this.registeredPlugins );
let pluginsToInitialize = pluginValues.length;
// If there are no plugins, skip this step
if( pluginsToInitialize === 0 ) {
this.loadAsync().then( resolve );
}
// ... otherwise initialize plugins
else {
let initNextPlugin;
let afterPlugInitialized = () => {
if( --pluginsToInitialize === 0 ) {
this.loadAsync().then( resolve );
}
else {
initNextPlugin();
}
};
let i = 0;
// Initialize plugins serially
initNextPlugin = () => {
let plugin = pluginValues[i++];
// If the plugin has an 'init' method, invoke it
if( typeof plugin.init === 'function' ) {
let promise = plugin.init( this.Reveal );
// If the plugin returned a Promise, wait for it
if( promise && typeof promise.then === 'function' ) {
promise.then( afterPlugInitialized );
}
else {
afterPlugInitialized();
}
}
else {
afterPlugInitialized();
}
}
initNextPlugin();
}
} )
}
/**
* Loads all async reveal.js dependencies.
*/
loadAsync() {
this.state = 'loaded';
if( this.asyncDependencies.length ) {
this.asyncDependencies.forEach( s => {
loadScript( s.src, s.callback );
} );
}
return Promise.resolve();
}
/**
* Registers a new plugin with this reveal.js instance.
*
* reveal.js waits for all registered plugins to initialize
* before considering itself ready, as long as the plugin
* is registered before calling `Reveal.initialize()`.
*/
registerPlugin( plugin ) {
// Backwards compatibility to make reveal.js ~3.9.0
// plugins work with reveal.js 4.0.0
if( arguments.length === 2 && typeof arguments[0] === 'string' ) {
plugin = arguments[1];
plugin.id = arguments[0];
}
// Plugin can optionally be a function which we call
// to create an instance of the plugin
else if( typeof plugin === 'function' ) {
plugin = plugin();
}
let id = plugin.id;
if( typeof id !== 'string' ) {
console.warn( 'Unrecognized plugin format; can\'t find plugin.id', plugin );
}
else if( this.registeredPlugins[id] === undefined ) {
this.registeredPlugins[id] = plugin;
// If a plugin is registered after reveal.js is loaded,
// initialize it right away
if( this.state === 'loaded' && typeof plugin.init === 'function' ) {
plugin.init( this.Reveal );
}
}
else {
console.warn( 'reveal.js: "'+ id +'" plugin has already been registered' );
}
}
/**
* Checks if a specific plugin has been registered.
*
* @param {String} id Unique plugin identifier
*/
hasPlugin( id ) {
return !!this.registeredPlugins[id];
}
/**
* Returns the specific plugin instance, if a plugin
* with the given ID has been registered.
*
* @param {String} id Unique plugin identifier
*/
getPlugin( id ) {
return this.registeredPlugins[id];
}
getRegisteredPlugins() {
return this.registeredPlugins;
}
destroy() {
Object.values( this.registeredPlugins ).forEach( plugin => {
if( typeof plugin.destroy === 'function' ) {
plugin.destroy();
}
} );
this.registeredPlugins = {};
this.asyncDependencies = [];
}
}

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/**
* Handles hiding of the pointer/cursor when inactive.
*/
export default class Pointer {
constructor( Reveal ) {
this.Reveal = Reveal;
// Throttles mouse wheel navigation
this.lastMouseWheelStep = 0;
// Is the mouse pointer currently hidden from view
this.cursorHidden = false;
// Timeout used to determine when the cursor is inactive
this.cursorInactiveTimeout = 0;
this.onDocumentCursorActive = this.onDocumentCursorActive.bind( this );
this.onDocumentMouseScroll = this.onDocumentMouseScroll.bind( this );
}
/**
* Called when the reveal.js config is updated.
*/
configure( config, oldConfig ) {
if( config.mouseWheel ) {
document.addEventListener( 'wheel', this.onDocumentMouseScroll, false );
}
else {
document.removeEventListener( 'wheel', this.onDocumentMouseScroll, false );
}
// Auto-hide the mouse pointer when its inactive
if( config.hideInactiveCursor ) {
document.addEventListener( 'mousemove', this.onDocumentCursorActive, false );
document.addEventListener( 'mousedown', this.onDocumentCursorActive, false );
}
else {
this.showCursor();
document.removeEventListener( 'mousemove', this.onDocumentCursorActive, false );
document.removeEventListener( 'mousedown', this.onDocumentCursorActive, false );
}
}
/**
* Shows the mouse pointer after it has been hidden with
* #hideCursor.
*/
showCursor() {
if( this.cursorHidden ) {
this.cursorHidden = false;
this.Reveal.getRevealElement().style.cursor = '';
}
}
/**
* Hides the mouse pointer when it's on top of the .reveal
* container.
*/
hideCursor() {
if( this.cursorHidden === false ) {
this.cursorHidden = true;
this.Reveal.getRevealElement().style.cursor = 'none';
}
}
destroy() {
this.showCursor();
document.removeEventListener( 'wheel', this.onDocumentMouseScroll, false );
document.removeEventListener( 'mousemove', this.onDocumentCursorActive, false );
document.removeEventListener( 'mousedown', this.onDocumentCursorActive, false );
}
/**
* Called whenever there is mouse input at the document level
* to determine if the cursor is active or not.
*
* @param {object} event
*/
onDocumentCursorActive( event ) {
this.showCursor();
clearTimeout( this.cursorInactiveTimeout );
this.cursorInactiveTimeout = setTimeout( this.hideCursor.bind( this ), this.Reveal.getConfig().hideCursorTime );
}
/**
* Handles mouse wheel scrolling, throttled to avoid skipping
* multiple slides.
*
* @param {object} event
*/
onDocumentMouseScroll( event ) {
if( Date.now() - this.lastMouseWheelStep > 1000 ) {
this.lastMouseWheelStep = Date.now();
let delta = event.detail || -event.wheelDelta;
if( delta > 0 ) {
this.Reveal.next();
}
else if( delta < 0 ) {
this.Reveal.prev();
}
}
}
}

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import { SLIDES_SELECTOR } from '../utils/constants.js'
import { queryAll, createStyleSheet } from '../utils/util.js'
/**
* Setups up our presentation for printing/exporting to PDF.
*/
export default class PrintView {
constructor( Reveal ) {
this.Reveal = Reveal;
}
/**
* Configures the presentation for printing to a static
* PDF.
*/
async activate() {
const config = this.Reveal.getConfig();
const slides = queryAll( this.Reveal.getRevealElement(), SLIDES_SELECTOR )
// Compute slide numbers now, before we start duplicating slides
const injectPageNumbers = config.slideNumber && /all|print/i.test( config.showSlideNumber );
const slideSize = this.Reveal.getComputedSlideSize( window.innerWidth, window.innerHeight );
// Dimensions of the PDF pages
const pageWidth = Math.floor( slideSize.width * ( 1 + config.margin ) ),
pageHeight = Math.floor( slideSize.height * ( 1 + config.margin ) );
// Dimensions of slides within the pages
const slideWidth = slideSize.width,
slideHeight = slideSize.height;
await new Promise( requestAnimationFrame );
// Let the browser know what page size we want to print
createStyleSheet( '@page{size:'+ pageWidth +'px '+ pageHeight +'px; margin: 0px;}' );
// Limit the size of certain elements to the dimensions of the slide
createStyleSheet( '.reveal section>img, .reveal section>video, .reveal section>iframe{max-width: '+ slideWidth +'px; max-height:'+ slideHeight +'px}' );
document.documentElement.classList.add( 'reveal-print', 'print-pdf' );
document.body.style.width = pageWidth + 'px';
document.body.style.height = pageHeight + 'px';
const viewportElement = this.Reveal.getViewportElement();
let presentationBackground;
if( viewportElement ) {
const viewportStyles = window.getComputedStyle( viewportElement );
if( viewportStyles && viewportStyles.background ) {
presentationBackground = viewportStyles.background;
}
}
// Make sure stretch elements fit on slide
await new Promise( requestAnimationFrame );
this.Reveal.layoutSlideContents( slideWidth, slideHeight );
// Batch scrollHeight access to prevent layout thrashing
await new Promise( requestAnimationFrame );
const slideScrollHeights = slides.map( slide => slide.scrollHeight );
const pages = [];
const pageContainer = slides[0].parentNode;
let slideNumber = 1;
// Slide and slide background layout
slides.forEach( function( slide, index ) {
// Vertical stacks are not centred since their section
// children will be
if( slide.classList.contains( 'stack' ) === false ) {
// Center the slide inside of the page, giving the slide some margin
let left = ( pageWidth - slideWidth ) / 2;
let top = ( pageHeight - slideHeight ) / 2;
const contentHeight = slideScrollHeights[ index ];
let numberOfPages = Math.max( Math.ceil( contentHeight / pageHeight ), 1 );
// Adhere to configured pages per slide limit
numberOfPages = Math.min( numberOfPages, config.pdfMaxPagesPerSlide );
// Center slides vertically
if( numberOfPages === 1 && config.center || slide.classList.contains( 'center' ) ) {
top = Math.max( ( pageHeight - contentHeight ) / 2, 0 );
}
// Wrap the slide in a page element and hide its overflow
// so that no page ever flows onto another
const page = document.createElement( 'div' );
pages.push( page );
page.className = 'pdf-page';
page.style.height = ( ( pageHeight + config.pdfPageHeightOffset ) * numberOfPages ) + 'px';
// Copy the presentation-wide background to each individual
// page when printing
if( presentationBackground ) {
page.style.background = presentationBackground;
}
page.appendChild( slide );
// Position the slide inside of the page
slide.style.left = left + 'px';
slide.style.top = top + 'px';
slide.style.width = slideWidth + 'px';
this.Reveal.slideContent.layout( slide );
if( slide.slideBackgroundElement ) {
page.insertBefore( slide.slideBackgroundElement, slide );
}
// Inject notes if `showNotes` is enabled
if( config.showNotes ) {
// Are there notes for this slide?
const notes = this.Reveal.getSlideNotes( slide );
if( notes ) {
const notesSpacing = 8;
const notesLayout = typeof config.showNotes === 'string' ? config.showNotes : 'inline';
const notesElement = document.createElement( 'div' );
notesElement.classList.add( 'speaker-notes' );
notesElement.classList.add( 'speaker-notes-pdf' );
notesElement.setAttribute( 'data-layout', notesLayout );
notesElement.innerHTML = notes;
if( notesLayout === 'separate-page' ) {
pages.push( notesElement );
}
else {
notesElement.style.left = notesSpacing + 'px';
notesElement.style.bottom = notesSpacing + 'px';
notesElement.style.width = ( pageWidth - notesSpacing*2 ) + 'px';
page.appendChild( notesElement );
}
}
}
// Inject page numbers if `slideNumbers` are enabled
if( injectPageNumbers ) {
const numberElement = document.createElement( 'div' );
numberElement.classList.add( 'slide-number' );
numberElement.classList.add( 'slide-number-pdf' );
numberElement.innerHTML = slideNumber++;
page.appendChild( numberElement );
}
// Copy page and show fragments one after another
if( config.pdfSeparateFragments ) {
// Each fragment 'group' is an array containing one or more
// fragments. Multiple fragments that appear at the same time
// are part of the same group.
const fragmentGroups = this.Reveal.fragments.sort( page.querySelectorAll( '.fragment' ), true );
let previousFragmentStep;
fragmentGroups.forEach( function( fragments, index ) {
// Remove 'current-fragment' from the previous group
if( previousFragmentStep ) {
previousFragmentStep.forEach( function( fragment ) {
fragment.classList.remove( 'current-fragment' );
} );
}
// Show the fragments for the current index
fragments.forEach( function( fragment ) {
fragment.classList.add( 'visible', 'current-fragment' );
}, this );
// Create a separate page for the current fragment state
const clonedPage = page.cloneNode( true );
// Inject unique page numbers for fragments
if( injectPageNumbers ) {
const numberElement = clonedPage.querySelector( '.slide-number-pdf' );
const fragmentNumber = index + 1;
numberElement.innerHTML += '.' + fragmentNumber;
}
pages.push( clonedPage );
previousFragmentStep = fragments;
}, this );
// Reset the first/original page so that all fragments are hidden
fragmentGroups.forEach( function( fragments ) {
fragments.forEach( function( fragment ) {
fragment.classList.remove( 'visible', 'current-fragment' );
} );
} );
}
// Show all fragments
else {
queryAll( page, '.fragment:not(.fade-out)' ).forEach( function( fragment ) {
fragment.classList.add( 'visible' );
} );
}
}
}, this );
await new Promise( requestAnimationFrame );
pages.forEach( page => pageContainer.appendChild( page ) );
// Re-run JS-based content layout after the slide is added to page DOM
this.Reveal.slideContent.layout( this.Reveal.getSlidesElement() );
// Notify subscribers that the PDF layout is good to go
this.Reveal.dispatchEvent({ type: 'pdf-ready' });
viewportElement.classList.remove( 'loading-scroll-mode' );
}
/**
* Checks if the print mode is/should be activated.
*/
isActive() {
return this.Reveal.getConfig().view === 'print';
}
}

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/**
* Creates a visual progress bar for the presentation.
*/
export default class Progress {
constructor( Reveal ) {
this.Reveal = Reveal;
this.onProgressClicked = this.onProgressClicked.bind( this );
}
render() {
this.element = document.createElement( 'div' );
this.element.className = 'progress';
this.Reveal.getRevealElement().appendChild( this.element );
this.bar = document.createElement( 'span' );
this.element.appendChild( this.bar );
}
/**
* Called when the reveal.js config is updated.
*/
configure( config, oldConfig ) {
this.element.style.display = config.progress ? 'block' : 'none';
}
bind() {
if( this.Reveal.getConfig().progress && this.element ) {
this.element.addEventListener( 'click', this.onProgressClicked, false );
}
}
unbind() {
if ( this.Reveal.getConfig().progress && this.element ) {
this.element.removeEventListener( 'click', this.onProgressClicked, false );
}
}
/**
* Updates the progress bar to reflect the current slide.
*/
update() {
// Update progress if enabled
if( this.Reveal.getConfig().progress && this.bar ) {
let scale = this.Reveal.getProgress();
// Don't fill the progress bar if there's only one slide
if( this.Reveal.getTotalSlides() < 2 ) {
scale = 0;
}
this.bar.style.transform = 'scaleX('+ scale +')';
}
}
getMaxWidth() {
return this.Reveal.getRevealElement().offsetWidth;
}
/**
* Clicking on the progress bar results in a navigation to the
* closest approximate horizontal slide using this equation:
*
* ( clickX / presentationWidth ) * numberOfSlides
*
* @param {object} event
*/
onProgressClicked( event ) {
this.Reveal.onUserInput( event );
event.preventDefault();
let slides = this.Reveal.getSlides();
let slidesTotal = slides.length;
let slideIndex = Math.floor( ( event.clientX / this.getMaxWidth() ) * slidesTotal );
if( this.Reveal.getConfig().rtl ) {
slideIndex = slidesTotal - slideIndex;
}
let targetIndices = this.Reveal.getIndices(slides[slideIndex]);
this.Reveal.slide( targetIndices.h, targetIndices.v );
}
destroy() {
this.element.remove();
}
}

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import { HORIZONTAL_SLIDES_SELECTOR } from '../utils/constants.js'
import { queryAll } from '../utils/util.js'
const HIDE_SCROLLBAR_TIMEOUT = 500;
const MAX_PROGRESS_SPACING = 4;
const MIN_PROGRESS_SEGMENT_HEIGHT = 6;
const MIN_PLAYHEAD_HEIGHT = 8;
/**
* The scroll view lets you read a reveal.js presentation
* as a linear scrollable page.
*/
export default class ScrollView {
constructor( Reveal ) {
this.Reveal = Reveal;
this.active = false;
this.activatedCallbacks = [];
this.onScroll = this.onScroll.bind( this );
}
/**
* Activates the scroll view. This rearranges the presentation DOM
* by—among other things—wrapping each slide in a page element.
*/
activate() {
if( this.active ) return;
const stateBeforeActivation = this.Reveal.getState();
this.active = true;
// Store the full presentation HTML so that we can restore it
// when/if the scroll view is deactivated
this.slideHTMLBeforeActivation = this.Reveal.getSlidesElement().innerHTML;
const horizontalSlides = queryAll( this.Reveal.getRevealElement(), HORIZONTAL_SLIDES_SELECTOR );
this.viewportElement.classList.add( 'loading-scroll-mode', 'reveal-scroll' );
let presentationBackground;
const viewportStyles = window.getComputedStyle( this.viewportElement );
if( viewportStyles && viewportStyles.background ) {
presentationBackground = viewportStyles.background;
}
const pageElements = [];
const pageContainer = horizontalSlides[0].parentNode;
let previousSlide;
// Creates a new page element and appends the given slide/bg
// to it.
const createPageElement = ( slide, h, v ) => {
let contentContainer;
// If this slide is part of an auto-animation sequence, we
// group it under the same page element as the previous slide
if( previousSlide && this.Reveal.shouldAutoAnimateBetween( previousSlide, slide ) ) {
contentContainer = document.createElement( 'div' );
contentContainer.className = 'scroll-page-content scroll-auto-animate-page';
contentContainer.style.display = 'none';
previousSlide.closest( '.scroll-page-content' ).parentNode.appendChild( contentContainer );
}
else {
// Wrap the slide in a page element and hide its overflow
// so that no page ever flows onto another
const page = document.createElement( 'div' );
page.className = 'scroll-page';
pageElements.push( page );
// Copy the presentation-wide background to each page
if( presentationBackground ) {
page.style.background = presentationBackground;
}
const stickyContainer = document.createElement( 'div' );
stickyContainer.className = 'scroll-page-sticky';
page.appendChild( stickyContainer );
contentContainer = document.createElement( 'div' );
contentContainer.className = 'scroll-page-content';
stickyContainer.appendChild( contentContainer );
}
contentContainer.appendChild( slide );
slide.classList.remove( 'past', 'future' );
slide.setAttribute( 'data-index-h', h );
slide.setAttribute( 'data-index-v', v );
if( slide.slideBackgroundElement ) {
slide.slideBackgroundElement.remove( 'past', 'future' );
contentContainer.insertBefore( slide.slideBackgroundElement, slide );
}
previousSlide = slide;
}
// Slide and slide background layout
horizontalSlides.forEach( ( horizontalSlide, h ) => {
if( this.Reveal.isVerticalStack( horizontalSlide ) ) {
horizontalSlide.querySelectorAll( 'section' ).forEach( ( verticalSlide, v ) => {
createPageElement( verticalSlide, h, v );
});
}
else {
createPageElement( horizontalSlide, h, 0 );
}
}, this );
this.createProgressBar();
// Remove leftover stacks
queryAll( this.Reveal.getRevealElement(), '.stack' ).forEach( stack => stack.remove() );
// Add our newly created pages to the DOM
pageElements.forEach( page => pageContainer.appendChild( page ) );
// Re-run JS-based content layout after the slide is added to page DOM
this.Reveal.slideContent.layout( this.Reveal.getSlidesElement() );
this.Reveal.layout();
this.Reveal.setState( stateBeforeActivation );
this.activatedCallbacks.forEach( callback => callback() );
this.activatedCallbacks = [];
this.restoreScrollPosition();
this.viewportElement.classList.remove( 'loading-scroll-mode' );
this.viewportElement.addEventListener( 'scroll', this.onScroll, { passive: true } );
}
/**
* Deactivates the scroll view and restores the standard slide-based
* presentation.
*/
deactivate() {
if( !this.active ) return;
const stateBeforeDeactivation = this.Reveal.getState();
this.active = false;
this.viewportElement.removeEventListener( 'scroll', this.onScroll );
this.viewportElement.classList.remove( 'reveal-scroll' );
this.removeProgressBar();
this.Reveal.getSlidesElement().innerHTML = this.slideHTMLBeforeActivation;
this.Reveal.sync();
this.Reveal.setState( stateBeforeDeactivation );
this.slideHTMLBeforeActivation = null;
}
toggle( override ) {
if( typeof override === 'boolean' ) {
override ? this.activate() : this.deactivate();
}
else {
this.isActive() ? this.deactivate() : this.activate();
}
}
/**
* Checks if the scroll view is currently active.
*/
isActive() {
return this.active;
}
/**
* Renders the progress bar component.
*/
createProgressBar() {
this.progressBar = document.createElement( 'div' );
this.progressBar.className = 'scrollbar';
this.progressBarInner = document.createElement( 'div' );
this.progressBarInner.className = 'scrollbar-inner';
this.progressBar.appendChild( this.progressBarInner );
this.progressBarPlayhead = document.createElement( 'div' );
this.progressBarPlayhead.className = 'scrollbar-playhead';
this.progressBarInner.appendChild( this.progressBarPlayhead );
this.viewportElement.insertBefore( this.progressBar, this.viewportElement.firstChild );
const handleDocumentMouseMove = ( event ) => {
let progress = ( event.clientY - this.progressBarInner.getBoundingClientRect().top ) / this.progressBarHeight;
progress = Math.max( Math.min( progress, 1 ), 0 );
this.viewportElement.scrollTop = progress * ( this.viewportElement.scrollHeight - this.viewportElement.offsetHeight );
};
const handleDocumentMouseUp = ( event ) => {
this.draggingProgressBar = false;
this.showProgressBar();
document.removeEventListener( 'mousemove', handleDocumentMouseMove );
document.removeEventListener( 'mouseup', handleDocumentMouseUp );
};
const handleMouseDown = ( event ) => {
event.preventDefault();
this.draggingProgressBar = true;
document.addEventListener( 'mousemove', handleDocumentMouseMove );
document.addEventListener( 'mouseup', handleDocumentMouseUp );
handleDocumentMouseMove( event );
};
this.progressBarInner.addEventListener( 'mousedown', handleMouseDown );
}
removeProgressBar() {
if( this.progressBar ) {
this.progressBar.remove();
this.progressBar = null;
}
}
layout() {
if( this.isActive() ) {
this.syncPages();
this.syncScrollPosition();
}
}
/**
* Updates our pages to match the latest configuration and
* presentation size.
*/
syncPages() {
const config = this.Reveal.getConfig();
const slideSize = this.Reveal.getComputedSlideSize( window.innerWidth, window.innerHeight );
const scale = this.Reveal.getScale();
const useCompactLayout = config.scrollLayout === 'compact';
const viewportHeight = this.viewportElement.offsetHeight;
const compactHeight = slideSize.height * scale;
const pageHeight = useCompactLayout ? compactHeight : viewportHeight;
// The height that needs to be scrolled between scroll triggers
this.scrollTriggerHeight = useCompactLayout ? compactHeight : viewportHeight;
this.viewportElement.style.setProperty( '--page-height', pageHeight + 'px' );
this.viewportElement.style.scrollSnapType = typeof config.scrollSnap === 'string' ? `y ${config.scrollSnap}` : '';
// This will hold all scroll triggers used to show/hide slides
this.slideTriggers = [];
const pageElements = Array.from( this.Reveal.getRevealElement().querySelectorAll( '.scroll-page' ) );
this.pages = pageElements.map( pageElement => {
const page = this.createPage({
pageElement,
slideElement: pageElement.querySelector( 'section' ),
stickyElement: pageElement.querySelector( '.scroll-page-sticky' ),
contentElement: pageElement.querySelector( '.scroll-page-content' ),
backgroundElement: pageElement.querySelector( '.slide-background' ),
autoAnimateElements: pageElement.querySelectorAll( '.scroll-auto-animate-page' ),
autoAnimatePages: []
});
page.pageElement.style.setProperty( '--slide-height', config.center === true ? 'auto' : slideSize.height + 'px' );
this.slideTriggers.push({
page: page,
activate: () => this.activatePage( page ),
deactivate: () => this.deactivatePage( page )
});
// Create scroll triggers that show/hide fragments
this.createFragmentTriggersForPage( page );
// Create scroll triggers for triggering auto-animate steps
if( page.autoAnimateElements.length > 0 ) {
this.createAutoAnimateTriggersForPage( page );
}
let totalScrollTriggerCount = Math.max( page.scrollTriggers.length - 1, 0 );
// Each auto-animate step may include its own scroll triggers
// for fragments, ensure we count those as well
totalScrollTriggerCount += page.autoAnimatePages.reduce( ( total, page ) => {
return total + Math.max( page.scrollTriggers.length - 1, 0 );
}, page.autoAnimatePages.length );
// Clean up from previous renders
page.pageElement.querySelectorAll( '.scroll-snap-point' ).forEach( el => el.remove() );
// Create snap points for all scroll triggers
// - Can't be absolute in FF
// - Can't be 0-height in Safari
// - Can't use snap-align on parent in Safari because then
// inner triggers won't work
for( let i = 0; i < totalScrollTriggerCount + 1; i++ ) {
const triggerStick = document.createElement( 'div' );
triggerStick.className = 'scroll-snap-point';
triggerStick.style.height = this.scrollTriggerHeight + 'px';
triggerStick.style.scrollSnapAlign = useCompactLayout ? 'center' : 'start';
page.pageElement.appendChild( triggerStick );
if( i === 0 ) {
triggerStick.style.marginTop = -this.scrollTriggerHeight + 'px';
}
}
// In the compact layout, only slides with scroll triggers cover the
// full viewport height. This helps avoid empty gaps before or after
// a sticky slide.
if( useCompactLayout && page.scrollTriggers.length > 0 ) {
page.pageHeight = viewportHeight;
page.pageElement.style.setProperty( '--page-height', viewportHeight + 'px' );
}
else {
page.pageHeight = pageHeight;
page.pageElement.style.removeProperty( '--page-height' );
}
// Add scroll padding based on how many scroll triggers we have
page.scrollPadding = this.scrollTriggerHeight * totalScrollTriggerCount;
// The total height including scrollable space
page.totalHeight = page.pageHeight + page.scrollPadding;
// This is used to pad the height of our page in CSS
page.pageElement.style.setProperty( '--page-scroll-padding', page.scrollPadding + 'px' );
// If this is a sticky page, stick it to the vertical center
if( totalScrollTriggerCount > 0 ) {
page.stickyElement.style.position = 'sticky';
page.stickyElement.style.top = Math.max( ( viewportHeight - page.pageHeight ) / 2, 0 ) + 'px';
}
else {
page.stickyElement.style.position = 'relative';
page.pageElement.style.scrollSnapAlign = page.pageHeight < viewportHeight ? 'center' : 'start';
}
return page;
} );
this.setTriggerRanges();
/*
console.log(this.slideTriggers.map( t => {
return {
range: `${t.range[0].toFixed(2)}-${t.range[1].toFixed(2)}`,
triggers: t.page.scrollTriggers.map( t => {
return `${t.range[0].toFixed(2)}-${t.range[1].toFixed(2)}`
}).join( ', ' ),
}
}))
*/
this.viewportElement.setAttribute( 'data-scrollbar', config.scrollProgress );
if( config.scrollProgress && this.totalScrollTriggerCount > 1 ) {
// Create the progress bar if it doesn't already exist
if( !this.progressBar ) this.createProgressBar();
this.syncProgressBar();
}
else {
this.removeProgressBar();
}
}
/**
* Calculates and sets the scroll range for all of our scroll
* triggers.
*/
setTriggerRanges() {
// Calculate the total number of scroll triggers
this.totalScrollTriggerCount = this.slideTriggers.reduce( ( total, trigger ) => {
return total + Math.max( trigger.page.scrollTriggers.length, 1 );
}, 0 );
let rangeStart = 0;
// Calculate the scroll range of each scroll trigger on a scale
// of 0-1
this.slideTriggers.forEach( ( trigger, i ) => {
trigger.range = [
rangeStart,
rangeStart + Math.max( trigger.page.scrollTriggers.length, 1 ) / this.totalScrollTriggerCount
];
const scrollTriggerSegmentSize = ( trigger.range[1] - trigger.range[0] ) / trigger.page.scrollTriggers.length;
// Set the range for each inner scroll trigger
trigger.page.scrollTriggers.forEach( ( scrollTrigger, i ) => {
scrollTrigger.range = [
rangeStart + i * scrollTriggerSegmentSize,
rangeStart + ( i + 1 ) * scrollTriggerSegmentSize
];
} );
rangeStart = trigger.range[1];
} );
}
/**
* Creates one scroll trigger for each fragments in the given page.
*
* @param {*} page
*/
createFragmentTriggersForPage( page, slideElement ) {
slideElement = slideElement || page.slideElement;
// Each fragment 'group' is an array containing one or more
// fragments. Multiple fragments that appear at the same time
// are part of the same group.
const fragmentGroups = this.Reveal.fragments.sort( slideElement.querySelectorAll( '.fragment' ), true );
// Create scroll triggers that show/hide fragments
if( fragmentGroups.length ) {
page.fragments = this.Reveal.fragments.sort( slideElement.querySelectorAll( '.fragment:not(.disabled)' ) );
page.scrollTriggers.push(
// Trigger for the initial state with no fragments visible
{
activate: () => {
this.Reveal.fragments.update( -1, page.fragments, slideElement );
}
}
);
// Triggers for each fragment group
fragmentGroups.forEach( ( fragments, i ) => {
page.scrollTriggers.push({
activate: () => {
this.Reveal.fragments.update( i, page.fragments, slideElement );
}
});
} );
}
return page.scrollTriggers.length;
}
/**
* Creates scroll triggers for the auto-animate steps in the
* given page.
*
* @param {*} page
*/
createAutoAnimateTriggersForPage( page ) {
if( page.autoAnimateElements.length > 0 ) {
// Triggers for each subsequent auto-animate slide
this.slideTriggers.push( ...Array.from( page.autoAnimateElements ).map( ( autoAnimateElement, i ) => {
let autoAnimatePage = this.createPage({
slideElement: autoAnimateElement.querySelector( 'section' ),
contentElement: autoAnimateElement,
backgroundElement: autoAnimateElement.querySelector( '.slide-background' )
});
// Create fragment scroll triggers for the auto-animate slide
this.createFragmentTriggersForPage( autoAnimatePage, autoAnimatePage.slideElement );
page.autoAnimatePages.push( autoAnimatePage );
// Return our slide trigger
return {
page: autoAnimatePage,
activate: () => this.activatePage( autoAnimatePage ),
deactivate: () => this.deactivatePage( autoAnimatePage )
};
}));
}
}
/**
* Helper method for creating a page definition and adding
* required fields. A "page" is a slide or auto-animate step.
*/
createPage( page ) {
page.scrollTriggers = [];
page.indexh = parseInt( page.slideElement.getAttribute( 'data-index-h' ), 10 );
page.indexv = parseInt( page.slideElement.getAttribute( 'data-index-v' ), 10 );
return page;
}
/**
* Rerenders progress bar segments so that they match the current
* reveal.js config and size.
*/
syncProgressBar() {
this.progressBarInner.querySelectorAll( '.scrollbar-slide' ).forEach( slide => slide.remove() );
const scrollHeight = this.viewportElement.scrollHeight;
const viewportHeight = this.viewportElement.offsetHeight;
const viewportHeightFactor = viewportHeight / scrollHeight;
this.progressBarHeight = this.progressBarInner.offsetHeight;
this.playheadHeight = Math.max( viewportHeightFactor * this.progressBarHeight, MIN_PLAYHEAD_HEIGHT );
this.progressBarScrollableHeight = this.progressBarHeight - this.playheadHeight;
const progressSegmentHeight = viewportHeight / scrollHeight * this.progressBarHeight;
const spacing = Math.min( progressSegmentHeight / 8, MAX_PROGRESS_SPACING );
this.progressBarPlayhead.style.height = this.playheadHeight - spacing + 'px';
// Don't show individual segments if they're too small
if( progressSegmentHeight > MIN_PROGRESS_SEGMENT_HEIGHT ) {
this.slideTriggers.forEach( slideTrigger => {
const { page } = slideTrigger;
// Visual representation of a slide
page.progressBarSlide = document.createElement( 'div' );
page.progressBarSlide.className = 'scrollbar-slide';
page.progressBarSlide.style.top = slideTrigger.range[0] * this.progressBarHeight + 'px';
page.progressBarSlide.style.height = ( slideTrigger.range[1] - slideTrigger.range[0] ) * this.progressBarHeight - spacing + 'px';
page.progressBarSlide.classList.toggle( 'has-triggers', page.scrollTriggers.length > 0 );
this.progressBarInner.appendChild( page.progressBarSlide );
// Visual representations of each scroll trigger
page.scrollTriggerElements = page.scrollTriggers.map( ( trigger, i ) => {
const triggerElement = document.createElement( 'div' );
triggerElement.className = 'scrollbar-trigger';
triggerElement.style.top = ( trigger.range[0] - slideTrigger.range[0] ) * this.progressBarHeight + 'px';
triggerElement.style.height = ( trigger.range[1] - trigger.range[0] ) * this.progressBarHeight - spacing + 'px';
page.progressBarSlide.appendChild( triggerElement );
if( i === 0 ) triggerElement.style.display = 'none';
return triggerElement;
} );
} );
}
else {
this.pages.forEach( page => page.progressBarSlide = null );
}
}
/**
* Reads the current scroll position and updates our active
* trigger states accordingly.
*/
syncScrollPosition() {
const viewportHeight = this.viewportElement.offsetHeight;
const viewportHeightFactor = viewportHeight / this.viewportElement.scrollHeight;
const scrollTop = this.viewportElement.scrollTop;
const scrollHeight = this.viewportElement.scrollHeight - viewportHeight
const scrollProgress = Math.max( Math.min( scrollTop / scrollHeight, 1 ), 0 );
const scrollProgressMid = Math.max( Math.min( ( scrollTop + viewportHeight / 2 ) / this.viewportElement.scrollHeight, 1 ), 0 );
let activePage;
this.slideTriggers.forEach( ( trigger ) => {
const { page } = trigger;
const shouldPreload = scrollProgress >= trigger.range[0] - viewportHeightFactor*2 &&
scrollProgress <= trigger.range[1] + viewportHeightFactor*2;
// Load slides that are within the preload range
if( shouldPreload && !page.loaded ) {
page.loaded = true;
this.Reveal.slideContent.load( page.slideElement );
}
else if( page.loaded ) {
page.loaded = false;
this.Reveal.slideContent.unload( page.slideElement );
}
// If we're within this trigger range, activate it
if( scrollProgress >= trigger.range[0] && scrollProgress <= trigger.range[1] ) {
this.activateTrigger( trigger );
activePage = trigger.page;
}
// .. otherwise deactivate
else if( trigger.active ) {
this.deactivateTrigger( trigger );
}
} );
// Each page can have its own scroll triggers, check if any of those
// need to be activated/deactivated
if( activePage ) {
activePage.scrollTriggers.forEach( ( trigger ) => {
if( scrollProgressMid >= trigger.range[0] && scrollProgressMid <= trigger.range[1] ) {
this.activateTrigger( trigger );
}
else if( trigger.active ) {
this.deactivateTrigger( trigger );
}
} );
}
// Update our visual progress indication
this.setProgressBarValue( scrollTop / ( this.viewportElement.scrollHeight - viewportHeight ) );
}
/**
* Moves the progress bar playhead to the specified position.
*
* @param {number} progress 0-1
*/
setProgressBarValue( progress ) {
if( this.progressBar ) {
this.progressBarPlayhead.style.transform = `translateY(${progress * this.progressBarScrollableHeight}px)`;
this.getAllPages()
.filter( page => page.progressBarSlide )
.forEach( ( page ) => {
page.progressBarSlide.classList.toggle( 'active', page.active === true );
page.scrollTriggers.forEach( ( trigger, i ) => {
page.scrollTriggerElements[i].classList.toggle( 'active', page.active === true && trigger.active === true );
} );
} );
this.showProgressBar();
}
}
/**
* Show the progress bar and, if configured, automatically hide
* it after a delay.
*/
showProgressBar() {
this.progressBar.classList.add( 'visible' );
clearTimeout( this.hideProgressBarTimeout );
if( this.Reveal.getConfig().scrollProgress === 'auto' && !this.draggingProgressBar ) {
this.hideProgressBarTimeout = setTimeout( () => {
if( this.progressBar ) {
this.progressBar.classList.remove( 'visible' );
}
}, HIDE_SCROLLBAR_TIMEOUT );
}
}
/**
* Scroll to the previous page.
*/
prev() {
this.viewportElement.scrollTop -= this.scrollTriggerHeight;
}
/**
* Scroll to the next page.
*/
next() {
this.viewportElement.scrollTop += this.scrollTriggerHeight;
}
/**
* Scrolls the given slide element into view.
*
* @param {HTMLElement} slideElement
*/
scrollToSlide( slideElement ) {
// If the scroll view isn't active yet, queue this action
if( !this.active ) {
this.activatedCallbacks.push( () => this.scrollToSlide( slideElement ) );
}
else {
// Find the trigger for this slide
const trigger = this.getScrollTriggerBySlide( slideElement );
if( trigger ) {
// Use the trigger's range to calculate the scroll position
this.viewportElement.scrollTop = trigger.range[0] * ( this.viewportElement.scrollHeight - this.viewportElement.offsetHeight );
}
}
}
/**
* Persists the current scroll position to session storage
* so that it can be restored.
*/
storeScrollPosition() {
clearTimeout( this.storeScrollPositionTimeout );
this.storeScrollPositionTimeout = setTimeout( () => {
sessionStorage.setItem( 'reveal-scroll-top', this.viewportElement.scrollTop );
sessionStorage.setItem( 'reveal-scroll-origin', location.origin + location.pathname );
this.storeScrollPositionTimeout = null;
}, 50 );
}
/**
* Restores the scroll position when a deck is reloader.
*/
restoreScrollPosition() {
const scrollPosition = sessionStorage.getItem( 'reveal-scroll-top' );
const scrollOrigin = sessionStorage.getItem( 'reveal-scroll-origin' );
if( scrollPosition && scrollOrigin === location.origin + location.pathname ) {
this.viewportElement.scrollTop = parseInt( scrollPosition, 10 );
}
}
/**
* Activates the given page and starts its embedded content
* if there is any.
*
* @param {object} page
*/
activatePage( page ) {
if( !page.active ) {
page.active = true;
const { slideElement, backgroundElement, contentElement, indexh, indexv } = page;
contentElement.style.display = 'block';
slideElement.classList.add( 'present' );
if( backgroundElement ) {
backgroundElement.classList.add( 'present' );
}
this.Reveal.setCurrentScrollPage( slideElement, indexh, indexv );
this.Reveal.backgrounds.bubbleSlideContrastClassToElement( slideElement, this.viewportElement );
// If this page is part of an auto-animation there will be one
// content element per auto-animated page. We need to show the
// current page and hide all others.
Array.from( contentElement.parentNode.querySelectorAll( '.scroll-page-content' ) ).forEach( sibling => {
if( sibling !== contentElement ) {
sibling.style.display = 'none';
}
});
}
}
/**
* Deactivates the page after it has been visible.
*
* @param {object} page
*/
deactivatePage( page ) {
if( page.active ) {
page.active = false;
if( page.slideElement ) page.slideElement.classList.remove( 'present' );
if( page.backgroundElement ) page.backgroundElement.classList.remove( 'present' );
}
}
activateTrigger( trigger ) {
if( !trigger.active ) {
trigger.active = true;
trigger.activate();
}
}
deactivateTrigger( trigger ) {
if( trigger.active ) {
trigger.active = false;
if( trigger.deactivate ) {
trigger.deactivate();
}
}
}
/**
* Retrieve a slide by its original h/v index (i.e. the indices the
* slide had before being linearized).
*
* @param {number} h
* @param {number} v
* @returns {HTMLElement}
*/
getSlideByIndices( h, v ) {
const page = this.getAllPages().find( page => {
return page.indexh === h && page.indexv === v;
} );
return page ? page.slideElement : null;
}
/**
* Retrieve a list of all scroll triggers for the given slide
* DOM element.
*
* @param {HTMLElement} slide
* @returns {Array}
*/
getScrollTriggerBySlide( slide ) {
return this.slideTriggers.find( trigger => trigger.page.slideElement === slide );
}
/**
* Get a list of all pages in the scroll view. This includes
* both top-level slides and auto-animate steps.
*
* @returns {Array}
*/
getAllPages() {
return this.pages.flatMap( page => [page, ...(page.autoAnimatePages || [])] );
}
onScroll() {
this.syncScrollPosition();
this.storeScrollPosition();
}
get viewportElement() {
return this.Reveal.getViewportElement();
}
}

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js/controllers/slidecontent.js Normal file
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import { extend, queryAll, closest, getMimeTypeFromFile, encodeRFC3986URI } from '../utils/util.js'
import { isMobile } from '../utils/device.js'
import fitty from 'fitty';
/**
* Handles loading, unloading and playback of slide
* content such as images, videos and iframes.
*/
export default class SlideContent {
constructor( Reveal ) {
this.Reveal = Reveal;
this.startEmbeddedIframe = this.startEmbeddedIframe.bind( this );
}
/**
* Should the given element be preloaded?
* Decides based on local element attributes and global config.
*
* @param {HTMLElement} element
*/
shouldPreload( element ) {
if( this.Reveal.isScrollView() ) {
return true;
}
// Prefer an explicit global preload setting
let preload = this.Reveal.getConfig().preloadIframes;
// If no global setting is available, fall back on the element's
// own preload setting
if( typeof preload !== 'boolean' ) {
preload = element.hasAttribute( 'data-preload' );
}
return preload;
}
/**
* Called when the given slide is within the configured view
* distance. Shows the slide element and loads any content
* that is set to load lazily (data-src).
*
* @param {HTMLElement} slide Slide to show
*/
load( slide, options = {} ) {
// Show the slide element
slide.style.display = this.Reveal.getConfig().display;
// Media elements with data-src attributes
queryAll( slide, 'img[data-src], video[data-src], audio[data-src], iframe[data-src]' ).forEach( element => {
if( element.tagName !== 'IFRAME' || this.shouldPreload( element ) ) {
element.setAttribute( 'src', element.getAttribute( 'data-src' ) );
element.setAttribute( 'data-lazy-loaded', '' );
element.removeAttribute( 'data-src' );
}
} );
// Media elements with <source> children
queryAll( slide, 'video, audio' ).forEach( media => {
let sources = 0;
queryAll( media, 'source[data-src]' ).forEach( source => {
source.setAttribute( 'src', source.getAttribute( 'data-src' ) );
source.removeAttribute( 'data-src' );
source.setAttribute( 'data-lazy-loaded', '' );
sources += 1;
} );
// Enable inline video playback in mobile Safari
if( isMobile && media.tagName === 'VIDEO' ) {
media.setAttribute( 'playsinline', '' );
}
// If we rewrote sources for this video/audio element, we need
// to manually tell it to load from its new origin
if( sources > 0 ) {
media.load();
}
} );
// Show the corresponding background element
let background = slide.slideBackgroundElement;
if( background ) {
background.style.display = 'block';
let backgroundContent = slide.slideBackgroundContentElement;
let backgroundIframe = slide.getAttribute( 'data-background-iframe' );
// If the background contains media, load it
if( background.hasAttribute( 'data-loaded' ) === false ) {
background.setAttribute( 'data-loaded', 'true' );
let backgroundImage = slide.getAttribute( 'data-background-image' ),
backgroundVideo = slide.getAttribute( 'data-background-video' ),
backgroundVideoLoop = slide.hasAttribute( 'data-background-video-loop' ),
backgroundVideoMuted = slide.hasAttribute( 'data-background-video-muted' );
// Images
if( backgroundImage ) {
// base64
if( /^data:/.test( backgroundImage.trim() ) ) {
backgroundContent.style.backgroundImage = `url(${backgroundImage.trim()})`;
}
// URL(s)
else {
backgroundContent.style.backgroundImage = backgroundImage.split( ',' ).map( background => {
// Decode URL(s) that are already encoded first
let decoded = decodeURI(background.trim());
return `url(${encodeRFC3986URI(decoded)})`;
}).join( ',' );
}
}
// Videos
else if ( backgroundVideo && !this.Reveal.isSpeakerNotes() ) {
let video = document.createElement( 'video' );
if( backgroundVideoLoop ) {
video.setAttribute( 'loop', '' );
}
if( backgroundVideoMuted ) {
video.muted = true;
}
// Enable inline playback in mobile Safari
//
// Mute is required for video to play when using
// swipe gestures to navigate since they don't
// count as direct user actions :'(
if( isMobile ) {
video.muted = true;
video.setAttribute( 'playsinline', '' );
}
// Support comma separated lists of video sources
backgroundVideo.split( ',' ).forEach( source => {
const sourceElement = document.createElement( 'source' );
sourceElement.setAttribute( 'src', source );
let type = getMimeTypeFromFile( source );
if( type ) {
sourceElement.setAttribute( 'type', type );
}
video.appendChild( sourceElement );
} );
backgroundContent.appendChild( video );
}
// Iframes
else if( backgroundIframe && options.excludeIframes !== true ) {
let iframe = document.createElement( 'iframe' );
iframe.setAttribute( 'allowfullscreen', '' );
iframe.setAttribute( 'mozallowfullscreen', '' );
iframe.setAttribute( 'webkitallowfullscreen', '' );
iframe.setAttribute( 'allow', 'autoplay' );
iframe.setAttribute( 'data-src', backgroundIframe );
iframe.style.width = '100%';
iframe.style.height = '100%';
iframe.style.maxHeight = '100%';
iframe.style.maxWidth = '100%';
backgroundContent.appendChild( iframe );
}
}
// Start loading preloadable iframes
let backgroundIframeElement = backgroundContent.querySelector( 'iframe[data-src]' );
if( backgroundIframeElement ) {
// Check if this iframe is eligible to be preloaded
if( this.shouldPreload( background ) && !/autoplay=(1|true|yes)/gi.test( backgroundIframe ) ) {
if( backgroundIframeElement.getAttribute( 'src' ) !== backgroundIframe ) {
backgroundIframeElement.setAttribute( 'src', backgroundIframe );
}
}
}
}
this.layout( slide );
}
/**
* Applies JS-dependent layout helpers for the scope.
*/
layout( scopeElement ) {
// Autosize text with the r-fit-text class based on the
// size of its container. This needs to happen after the
// slide is visible in order to measure the text.
Array.from( scopeElement.querySelectorAll( '.r-fit-text' ) ).forEach( element => {
fitty( element, {
minSize: 24,
maxSize: this.Reveal.getConfig().height * 0.8,
observeMutations: false,
observeWindow: false
} );
} );
}
/**
* Unloads and hides the given slide. This is called when the
* slide is moved outside of the configured view distance.
*
* @param {HTMLElement} slide
*/
unload( slide ) {
// Hide the slide element
slide.style.display = 'none';
// Hide the corresponding background element
let background = this.Reveal.getSlideBackground( slide );
if( background ) {
background.style.display = 'none';
// Unload any background iframes
queryAll( background, 'iframe[src]' ).forEach( element => {
element.removeAttribute( 'src' );
} );
}
// Reset lazy-loaded media elements with src attributes
queryAll( slide, 'video[data-lazy-loaded][src], audio[data-lazy-loaded][src], iframe[data-lazy-loaded][src]' ).forEach( element => {
element.setAttribute( 'data-src', element.getAttribute( 'src' ) );
element.removeAttribute( 'src' );
} );
// Reset lazy-loaded media elements with <source> children
queryAll( slide, 'video[data-lazy-loaded] source[src], audio source[src]' ).forEach( source => {
source.setAttribute( 'data-src', source.getAttribute( 'src' ) );
source.removeAttribute( 'src' );
} );
}
/**
* Enforces origin-specific format rules for embedded media.
*/
formatEmbeddedContent() {
let _appendParamToIframeSource = ( sourceAttribute, sourceURL, param ) => {
queryAll( this.Reveal.getSlidesElement(), 'iframe['+ sourceAttribute +'*="'+ sourceURL +'"]' ).forEach( el => {
let src = el.getAttribute( sourceAttribute );
if( src && src.indexOf( param ) === -1 ) {
el.setAttribute( sourceAttribute, src + ( !/\?/.test( src ) ? '?' : '&' ) + param );
}
});
};
// YouTube frames must include "?enablejsapi=1"
_appendParamToIframeSource( 'src', 'youtube.com/embed/', 'enablejsapi=1' );
_appendParamToIframeSource( 'data-src', 'youtube.com/embed/', 'enablejsapi=1' );
// Vimeo frames must include "?api=1"
_appendParamToIframeSource( 'src', 'player.vimeo.com/', 'api=1' );
_appendParamToIframeSource( 'data-src', 'player.vimeo.com/', 'api=1' );
}
/**
* Start playback of any embedded content inside of
* the given element.
*
* @param {HTMLElement} element
*/
startEmbeddedContent( element ) {
if( element && !this.Reveal.isSpeakerNotes() ) {
// Restart GIFs
queryAll( element, 'img[src$=".gif"]' ).forEach( el => {
// Setting the same unchanged source like this was confirmed
// to work in Chrome, FF & Safari
el.setAttribute( 'src', el.getAttribute( 'src' ) );
} );
// HTML5 media elements
queryAll( element, 'video, audio' ).forEach( el => {
if( closest( el, '.fragment' ) && !closest( el, '.fragment.visible' ) ) {
return;
}
// Prefer an explicit global autoplay setting
let autoplay = this.Reveal.getConfig().autoPlayMedia;
// If no global setting is available, fall back on the element's
// own autoplay setting
if( typeof autoplay !== 'boolean' ) {
autoplay = el.hasAttribute( 'data-autoplay' ) || !!closest( el, '.slide-background' );
}
if( autoplay && typeof el.play === 'function' ) {
// If the media is ready, start playback
if( el.readyState > 1 ) {
this.startEmbeddedMedia( { target: el } );
}
// Mobile devices never fire a loaded event so instead
// of waiting, we initiate playback
else if( isMobile ) {
let promise = el.play();
// If autoplay does not work, ensure that the controls are visible so
// that the viewer can start the media on their own
if( promise && typeof promise.catch === 'function' && el.controls === false ) {
promise.catch( () => {
el.controls = true;
// Once the video does start playing, hide the controls again
el.addEventListener( 'play', () => {
el.controls = false;
} );
} );
}
}
// If the media isn't loaded, wait before playing
else {
el.removeEventListener( 'loadeddata', this.startEmbeddedMedia ); // remove first to avoid dupes
el.addEventListener( 'loadeddata', this.startEmbeddedMedia );
}
}
} );
// Normal iframes
queryAll( element, 'iframe[src]' ).forEach( el => {
if( closest( el, '.fragment' ) && !closest( el, '.fragment.visible' ) ) {
return;
}
this.startEmbeddedIframe( { target: el } );
} );
// Lazy loading iframes
queryAll( element, 'iframe[data-src]' ).forEach( el => {
if( closest( el, '.fragment' ) && !closest( el, '.fragment.visible' ) ) {
return;
}
if( el.getAttribute( 'src' ) !== el.getAttribute( 'data-src' ) ) {
el.removeEventListener( 'load', this.startEmbeddedIframe ); // remove first to avoid dupes
el.addEventListener( 'load', this.startEmbeddedIframe );
el.setAttribute( 'src', el.getAttribute( 'data-src' ) );
}
} );
}
}
/**
* Starts playing an embedded video/audio element after
* it has finished loading.
*
* @param {object} event
*/
startEmbeddedMedia( event ) {
let isAttachedToDOM = !!closest( event.target, 'html' ),
isVisible = !!closest( event.target, '.present' );
if( isAttachedToDOM && isVisible ) {
event.target.currentTime = 0;
event.target.play();
}
event.target.removeEventListener( 'loadeddata', this.startEmbeddedMedia );
}
/**
* "Starts" the content of an embedded iframe using the
* postMessage API.
*
* @param {object} event
*/
startEmbeddedIframe( event ) {
let iframe = event.target;
if( iframe && iframe.contentWindow ) {
let isAttachedToDOM = !!closest( event.target, 'html' ),
isVisible = !!closest( event.target, '.present' );
if( isAttachedToDOM && isVisible ) {
// Prefer an explicit global autoplay setting
let autoplay = this.Reveal.getConfig().autoPlayMedia;
// If no global setting is available, fall back on the element's
// own autoplay setting
if( typeof autoplay !== 'boolean' ) {
autoplay = iframe.hasAttribute( 'data-autoplay' ) || !!closest( iframe, '.slide-background' );
}
// YouTube postMessage API
if( /youtube\.com\/embed\//.test( iframe.getAttribute( 'src' ) ) && autoplay ) {
iframe.contentWindow.postMessage( '{"event":"command","func":"playVideo","args":""}', '*' );
}
// Vimeo postMessage API
else if( /player\.vimeo\.com\//.test( iframe.getAttribute( 'src' ) ) && autoplay ) {
iframe.contentWindow.postMessage( '{"method":"play"}', '*' );
}
// Generic postMessage API
else {
iframe.contentWindow.postMessage( 'slide:start', '*' );
}
}
}
}
/**
* Stop playback of any embedded content inside of
* the targeted slide.
*
* @param {HTMLElement} element
*/
stopEmbeddedContent( element, options = {} ) {
options = extend( {
// Defaults
unloadIframes: true
}, options );
if( element && element.parentNode ) {
// HTML5 media elements
queryAll( element, 'video, audio' ).forEach( el => {
if( !el.hasAttribute( 'data-ignore' ) && typeof el.pause === 'function' ) {
el.setAttribute('data-paused-by-reveal', '');
el.pause();
}
} );
// Generic postMessage API for non-lazy loaded iframes
queryAll( element, 'iframe' ).forEach( el => {
if( el.contentWindow ) el.contentWindow.postMessage( 'slide:stop', '*' );
el.removeEventListener( 'load', this.startEmbeddedIframe );
});
// YouTube postMessage API
queryAll( element, 'iframe[src*="youtube.com/embed/"]' ).forEach( el => {
if( !el.hasAttribute( 'data-ignore' ) && el.contentWindow && typeof el.contentWindow.postMessage === 'function' ) {
el.contentWindow.postMessage( '{"event":"command","func":"pauseVideo","args":""}', '*' );
}
});
// Vimeo postMessage API
queryAll( element, 'iframe[src*="player.vimeo.com/"]' ).forEach( el => {
if( !el.hasAttribute( 'data-ignore' ) && el.contentWindow && typeof el.contentWindow.postMessage === 'function' ) {
el.contentWindow.postMessage( '{"method":"pause"}', '*' );
}
});
if( options.unloadIframes === true ) {
// Unload lazy-loaded iframes
queryAll( element, 'iframe[data-src]' ).forEach( el => {
// Only removing the src doesn't actually unload the frame
// in all browsers (Firefox) so we set it to blank first
el.setAttribute( 'src', 'about:blank' );
el.removeAttribute( 'src' );
} );
}
}
}
}

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import {
SLIDE_NUMBER_FORMAT_CURRENT,
SLIDE_NUMBER_FORMAT_CURRENT_SLASH_TOTAL,
SLIDE_NUMBER_FORMAT_HORIZONTAL_DOT_VERTICAL,
SLIDE_NUMBER_FORMAT_HORIZONTAL_SLASH_VERTICAL
} from "../utils/constants";
/**
* Handles the display of reveal.js' optional slide number.
*/
export default class SlideNumber {
constructor( Reveal ) {
this.Reveal = Reveal;
}
render() {
this.element = document.createElement( 'div' );
this.element.className = 'slide-number';
this.Reveal.getRevealElement().appendChild( this.element );
}
/**
* Called when the reveal.js config is updated.
*/
configure( config, oldConfig ) {
let slideNumberDisplay = 'none';
if( config.slideNumber && !this.Reveal.isPrintView() ) {
if( config.showSlideNumber === 'all' ) {
slideNumberDisplay = 'block';
}
else if( config.showSlideNumber === 'speaker' && this.Reveal.isSpeakerNotes() ) {
slideNumberDisplay = 'block';
}
}
this.element.style.display = slideNumberDisplay;
}
/**
* Updates the slide number to match the current slide.
*/
update() {
// Update slide number if enabled
if( this.Reveal.getConfig().slideNumber && this.element ) {
this.element.innerHTML = this.getSlideNumber();
}
}
/**
* Returns the HTML string corresponding to the current slide
* number, including formatting.
*/
getSlideNumber( slide = this.Reveal.getCurrentSlide() ) {
let config = this.Reveal.getConfig();
let value;
let format = SLIDE_NUMBER_FORMAT_HORIZONTAL_DOT_VERTICAL;
if ( typeof config.slideNumber === 'function' ) {
value = config.slideNumber( slide );
} else {
// Check if a custom number format is available
if( typeof config.slideNumber === 'string' ) {
format = config.slideNumber;
}
// If there are ONLY vertical slides in this deck, always use
// a flattened slide number
if( !/c/.test( format ) && this.Reveal.getHorizontalSlides().length === 1 ) {
format = SLIDE_NUMBER_FORMAT_CURRENT;
}
// Offset the current slide number by 1 to make it 1-indexed
let horizontalOffset = slide && slide.dataset.visibility === 'uncounted' ? 0 : 1;
value = [];
switch( format ) {
case SLIDE_NUMBER_FORMAT_CURRENT:
value.push( this.Reveal.getSlidePastCount( slide ) + horizontalOffset );
break;
case SLIDE_NUMBER_FORMAT_CURRENT_SLASH_TOTAL:
value.push( this.Reveal.getSlidePastCount( slide ) + horizontalOffset, '/', this.Reveal.getTotalSlides() );
break;
default:
let indices = this.Reveal.getIndices( slide );
value.push( indices.h + horizontalOffset );
let sep = format === SLIDE_NUMBER_FORMAT_HORIZONTAL_SLASH_VERTICAL ? '/' : '.';
if( this.Reveal.isVerticalSlide( slide ) ) value.push( sep, indices.v + 1 );
}
}
let url = '#' + this.Reveal.location.getHash( slide );
return this.formatNumber( value[0], value[1], value[2], url );
}
/**
* Applies HTML formatting to a slide number before it's
* written to the DOM.
*
* @param {number} a Current slide
* @param {string} delimiter Character to separate slide numbers
* @param {(number|*)} b Total slides
* @param {HTMLElement} [url='#'+locationHash()] The url to link to
* @return {string} HTML string fragment
*/
formatNumber( a, delimiter, b, url = '#' + this.Reveal.location.getHash() ) {
if( typeof b === 'number' && !isNaN( b ) ) {
return `<a href="${url}">
<span class="slide-number-a">${a}</span>
<span class="slide-number-delimiter">${delimiter}</span>
<span class="slide-number-b">${b}</span>
</a>`;
}
else {
return `<a href="${url}">
<span class="slide-number-a">${a}</span>
</a>`;
}
}
destroy() {
this.element.remove();
}
}

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import { isAndroid } from '../utils/device.js'
import { matches } from '../utils/util.js'
const SWIPE_THRESHOLD = 40;
/**
* Controls all touch interactions and navigations for
* a presentation.
*/
export default class Touch {
constructor( Reveal ) {
this.Reveal = Reveal;
// Holds information about the currently ongoing touch interaction
this.touchStartX = 0;
this.touchStartY = 0;
this.touchStartCount = 0;
this.touchCaptured = false;
this.onPointerDown = this.onPointerDown.bind( this );
this.onPointerMove = this.onPointerMove.bind( this );
this.onPointerUp = this.onPointerUp.bind( this );
this.onTouchStart = this.onTouchStart.bind( this );
this.onTouchMove = this.onTouchMove.bind( this );
this.onTouchEnd = this.onTouchEnd.bind( this );
}
/**
*
*/
bind() {
let revealElement = this.Reveal.getRevealElement();
if( 'onpointerdown' in window ) {
// Use W3C pointer events
revealElement.addEventListener( 'pointerdown', this.onPointerDown, false );
revealElement.addEventListener( 'pointermove', this.onPointerMove, false );
revealElement.addEventListener( 'pointerup', this.onPointerUp, false );
}
else if( window.navigator.msPointerEnabled ) {
// IE 10 uses prefixed version of pointer events
revealElement.addEventListener( 'MSPointerDown', this.onPointerDown, false );
revealElement.addEventListener( 'MSPointerMove', this.onPointerMove, false );
revealElement.addEventListener( 'MSPointerUp', this.onPointerUp, false );
}
else {
// Fall back to touch events
revealElement.addEventListener( 'touchstart', this.onTouchStart, false );
revealElement.addEventListener( 'touchmove', this.onTouchMove, false );
revealElement.addEventListener( 'touchend', this.onTouchEnd, false );
}
}
/**
*
*/
unbind() {
let revealElement = this.Reveal.getRevealElement();
revealElement.removeEventListener( 'pointerdown', this.onPointerDown, false );
revealElement.removeEventListener( 'pointermove', this.onPointerMove, false );
revealElement.removeEventListener( 'pointerup', this.onPointerUp, false );
revealElement.removeEventListener( 'MSPointerDown', this.onPointerDown, false );
revealElement.removeEventListener( 'MSPointerMove', this.onPointerMove, false );
revealElement.removeEventListener( 'MSPointerUp', this.onPointerUp, false );
revealElement.removeEventListener( 'touchstart', this.onTouchStart, false );
revealElement.removeEventListener( 'touchmove', this.onTouchMove, false );
revealElement.removeEventListener( 'touchend', this.onTouchEnd, false );
}
/**
* Checks if the target element prevents the triggering of
* swipe navigation.
*/
isSwipePrevented( target ) {
// Prevent accidental swipes when scrubbing timelines
if( matches( target, 'video, audio' ) ) return true;
while( target && typeof target.hasAttribute === 'function' ) {
if( target.hasAttribute( 'data-prevent-swipe' ) ) return true;
target = target.parentNode;
}
return false;
}
/**
* Handler for the 'touchstart' event, enables support for
* swipe and pinch gestures.
*
* @param {object} event
*/
onTouchStart( event ) {
if( this.isSwipePrevented( event.target ) ) return true;
this.touchStartX = event.touches[0].clientX;
this.touchStartY = event.touches[0].clientY;
this.touchStartCount = event.touches.length;
}
/**
* Handler for the 'touchmove' event.
*
* @param {object} event
*/
onTouchMove( event ) {
if( this.isSwipePrevented( event.target ) ) return true;
let config = this.Reveal.getConfig();
// Each touch should only trigger one action
if( !this.touchCaptured ) {
this.Reveal.onUserInput( event );
let currentX = event.touches[0].clientX;
let currentY = event.touches[0].clientY;
// There was only one touch point, look for a swipe
if( event.touches.length === 1 && this.touchStartCount !== 2 ) {
let availableRoutes = this.Reveal.availableRoutes({ includeFragments: true });
let deltaX = currentX - this.touchStartX,
deltaY = currentY - this.touchStartY;
if( deltaX > SWIPE_THRESHOLD && Math.abs( deltaX ) > Math.abs( deltaY ) ) {
this.touchCaptured = true;
if( config.navigationMode === 'linear' ) {
if( config.rtl ) {
this.Reveal.next();
}
else {
this.Reveal.prev();
}
}
else {
this.Reveal.left();
}
}
else if( deltaX < -SWIPE_THRESHOLD && Math.abs( deltaX ) > Math.abs( deltaY ) ) {
this.touchCaptured = true;
if( config.navigationMode === 'linear' ) {
if( config.rtl ) {
this.Reveal.prev();
}
else {
this.Reveal.next();
}
}
else {
this.Reveal.right();
}
}
else if( deltaY > SWIPE_THRESHOLD && availableRoutes.up ) {
this.touchCaptured = true;
if( config.navigationMode === 'linear' ) {
this.Reveal.prev();
}
else {
this.Reveal.up();
}
}
else if( deltaY < -SWIPE_THRESHOLD && availableRoutes.down ) {
this.touchCaptured = true;
if( config.navigationMode === 'linear' ) {
this.Reveal.next();
}
else {
this.Reveal.down();
}
}
// If we're embedded, only block touch events if they have
// triggered an action
if( config.embedded ) {
if( this.touchCaptured || this.Reveal.isVerticalSlide() ) {
event.preventDefault();
}
}
// Not embedded? Block them all to avoid needless tossing
// around of the viewport in iOS
else {
event.preventDefault();
}
}
}
// There's a bug with swiping on some Android devices unless
// the default action is always prevented
else if( isAndroid ) {
event.preventDefault();
}
}
/**
* Handler for the 'touchend' event.
*
* @param {object} event
*/
onTouchEnd( event ) {
this.touchCaptured = false;
}
/**
* Convert pointer down to touch start.
*
* @param {object} event
*/
onPointerDown( event ) {
if( event.pointerType === event.MSPOINTER_TYPE_TOUCH || event.pointerType === "touch" ) {
event.touches = [{ clientX: event.clientX, clientY: event.clientY }];
this.onTouchStart( event );
}
}
/**
* Convert pointer move to touch move.
*
* @param {object} event
*/
onPointerMove( event ) {
if( event.pointerType === event.MSPOINTER_TYPE_TOUCH || event.pointerType === "touch" ) {
event.touches = [{ clientX: event.clientX, clientY: event.clientY }];
this.onTouchMove( event );
}
}
/**
* Convert pointer up to touch end.
*
* @param {object} event
*/
onPointerUp( event ) {
if( event.pointerType === event.MSPOINTER_TYPE_TOUCH || event.pointerType === "touch" ) {
event.touches = [{ clientX: event.clientX, clientY: event.clientY }];
this.onTouchEnd( event );
}
}
}

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import Deck, { VERSION } from './reveal.js'
/**
* Expose the Reveal class to the window. To create a
* new instance:
* let deck = new Reveal( document.querySelector( '.reveal' ), {
* controls: false
* } );
* deck.initialize().then(() => {
* // reveal.js is ready
* });
*/
let Reveal = Deck;
/**
* The below is a thin shell that mimics the pre 4.0
* reveal.js API and ensures backwards compatibility.
* This API only allows for one Reveal instance per
* page, whereas the new API above lets you run many
* presentations on the same page.
*
* Reveal.initialize( { controls: false } ).then(() => {
* // reveal.js is ready
* });
*/
let enqueuedAPICalls = [];
Reveal.initialize = options => {
// Create our singleton reveal.js instance
Object.assign( Reveal, new Deck( document.querySelector( '.reveal' ), options ) );
// Invoke any enqueued API calls
enqueuedAPICalls.map( method => method( Reveal ) );
return Reveal.initialize();
}
/**
* The pre 4.0 API let you add event listener before
* initializing. We maintain the same behavior by
* queuing up premature API calls and invoking all
* of them when Reveal.initialize is called.
*/
[ 'configure', 'on', 'off', 'addEventListener', 'removeEventListener', 'registerPlugin' ].forEach( method => {
Reveal[method] = ( ...args ) => {
enqueuedAPICalls.push( deck => deck[method].call( null, ...args ) );
}
} );
Reveal.isReady = () => false;
Reveal.VERSION = VERSION;
export default Reveal;

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/**
* Converts various color input formats to an {r:0,g:0,b:0} object.
*
* @param {string} color The string representation of a color
* @example
* colorToRgb('#000');
* @example
* colorToRgb('#000000');
* @example
* colorToRgb('rgb(0,0,0)');
* @example
* colorToRgb('rgba(0,0,0)');
*
* @return {{r: number, g: number, b: number, [a]: number}|null}
*/
export const colorToRgb = ( color ) => {
let hex3 = color.match( /^#([0-9a-f]{3})$/i );
if( hex3 && hex3[1] ) {
hex3 = hex3[1];
return {
r: parseInt( hex3.charAt( 0 ), 16 ) * 0x11,
g: parseInt( hex3.charAt( 1 ), 16 ) * 0x11,
b: parseInt( hex3.charAt( 2 ), 16 ) * 0x11
};
}
let hex6 = color.match( /^#([0-9a-f]{6})$/i );
if( hex6 && hex6[1] ) {
hex6 = hex6[1];
return {
r: parseInt( hex6.slice( 0, 2 ), 16 ),
g: parseInt( hex6.slice( 2, 4 ), 16 ),
b: parseInt( hex6.slice( 4, 6 ), 16 )
};
}
let rgb = color.match( /^rgb\s*\(\s*(\d+)\s*,\s*(\d+)\s*,\s*(\d+)\s*\)$/i );
if( rgb ) {
return {
r: parseInt( rgb[1], 10 ),
g: parseInt( rgb[2], 10 ),
b: parseInt( rgb[3], 10 )
};
}
let rgba = color.match( /^rgba\s*\(\s*(\d+)\s*,\s*(\d+)\s*,\s*(\d+)\s*\,\s*([\d]+|[\d]*.[\d]+)\s*\)$/i );
if( rgba ) {
return {
r: parseInt( rgba[1], 10 ),
g: parseInt( rgba[2], 10 ),
b: parseInt( rgba[3], 10 ),
a: parseFloat( rgba[4] )
};
}
return null;
}
/**
* Calculates brightness on a scale of 0-255.
*
* @param {string} color See colorToRgb for supported formats.
* @see {@link colorToRgb}
*/
export const colorBrightness = ( color ) => {
if( typeof color === 'string' ) color = colorToRgb( color );
if( color ) {
return ( color.r * 299 + color.g * 587 + color.b * 114 ) / 1000;
}
return null;
}

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export const SLIDES_SELECTOR = '.slides section';
export const HORIZONTAL_SLIDES_SELECTOR = '.slides>section';
export const VERTICAL_SLIDES_SELECTOR = '.slides>section.present>section';
// Methods that may not be invoked via the postMessage API
export const POST_MESSAGE_METHOD_BLACKLIST = /registerPlugin|registerKeyboardShortcut|addKeyBinding|addEventListener|showPreview/;
// Regex for retrieving the fragment style from a class attribute
export const FRAGMENT_STYLE_REGEX = /fade-(down|up|right|left|out|in-then-out|in-then-semi-out)|semi-fade-out|current-visible|shrink|grow/;
// Slide number formats
export const SLIDE_NUMBER_FORMAT_HORIZONTAL_DOT_VERTICAL = 'h.v';
export const SLIDE_NUMBER_FORMAT_HORIZONTAL_SLASH_VERTICAL = 'h/v';
export const SLIDE_NUMBER_FORMAT_CURRENT = 'c';
export const SLIDE_NUMBER_FORMAT_CURRENT_SLASH_TOTAL = 'c/t';

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const UA = navigator.userAgent;
export const isMobile = /(iphone|ipod|ipad|android)/gi.test( UA ) ||
( navigator.platform === 'MacIntel' && navigator.maxTouchPoints > 1 ); // iPadOS
export const isChrome = /chrome/i.test( UA ) && !/edge/i.test( UA );
export const isAndroid = /android/gi.test( UA );

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/**
* Loads a JavaScript file from the given URL and executes it.
*
* @param {string} url Address of the .js file to load
* @param {function} callback Method to invoke when the script
* has loaded and executed
*/
export const loadScript = ( url, callback ) => {
const script = document.createElement( 'script' );
script.type = 'text/javascript';
script.async = false;
script.defer = false;
script.src = url;
if( typeof callback === 'function' ) {
// Success callback
script.onload = script.onreadystatechange = event => {
if( event.type === 'load' || /loaded|complete/.test( script.readyState ) ) {
// Kill event listeners
script.onload = script.onreadystatechange = script.onerror = null;
callback();
}
};
// Error callback
script.onerror = err => {
// Kill event listeners
script.onload = script.onreadystatechange = script.onerror = null;
callback( new Error( 'Failed loading script: ' + script.src + '\n' + err ) );
};
}
// Append the script at the end of <head>
const head = document.querySelector( 'head' );
head.insertBefore( script, head.lastChild );
}

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/**
* Extend object a with the properties of object b.
* If there's a conflict, object b takes precedence.
*
* @param {object} a
* @param {object} b
*/
export const extend = ( a, b ) => {
for( let i in b ) {
a[ i ] = b[ i ];
}
return a;
}
/**
* querySelectorAll but returns an Array.
*/
export const queryAll = ( el, selector ) => {
return Array.from( el.querySelectorAll( selector ) );
}
/**
* classList.toggle() with cross browser support
*/
export const toggleClass = ( el, className, value ) => {
if( value ) {
el.classList.add( className );
}
else {
el.classList.remove( className );
}
}
/**
* Utility for deserializing a value.
*
* @param {*} value
* @return {*}
*/
export const deserialize = ( value ) => {
if( typeof value === 'string' ) {
if( value === 'null' ) return null;
else if( value === 'true' ) return true;
else if( value === 'false' ) return false;
else if( value.match( /^-?[\d\.]+$/ ) ) return parseFloat( value );
}
return value;
}
/**
* Measures the distance in pixels between point a
* and point b.
*
* @param {object} a point with x/y properties
* @param {object} b point with x/y properties
*
* @return {number}
*/
export const distanceBetween = ( a, b ) => {
let dx = a.x - b.x,
dy = a.y - b.y;
return Math.sqrt( dx*dx + dy*dy );
}
/**
* Applies a CSS transform to the target element.
*
* @param {HTMLElement} element
* @param {string} transform
*/
export const transformElement = ( element, transform ) => {
element.style.transform = transform;
}
/**
* Element.matches with IE support.
*
* @param {HTMLElement} target The element to match
* @param {String} selector The CSS selector to match
* the element against
*
* @return {Boolean}
*/
export const matches = ( target, selector ) => {
let matchesMethod = target.matches || target.matchesSelector || target.msMatchesSelector;
return !!( matchesMethod && matchesMethod.call( target, selector ) );
}
/**
* Find the closest parent that matches the given
* selector.
*
* @param {HTMLElement} target The child element
* @param {String} selector The CSS selector to match
* the parents against
*
* @return {HTMLElement} The matched parent or null
* if no matching parent was found
*/
export const closest = ( target, selector ) => {
// Native Element.closest
if( typeof target.closest === 'function' ) {
return target.closest( selector );
}
// Polyfill
while( target ) {
if( matches( target, selector ) ) {
return target;
}
// Keep searching
target = target.parentNode;
}
return null;
}
/**
* Handling the fullscreen functionality via the fullscreen API
*
* @see http://fullscreen.spec.whatwg.org/
* @see https://developer.mozilla.org/en-US/docs/DOM/Using_fullscreen_mode
*/
export const enterFullscreen = element => {
element = element || document.documentElement;
// Check which implementation is available
let requestMethod = element.requestFullscreen ||
element.webkitRequestFullscreen ||
element.webkitRequestFullScreen ||
element.mozRequestFullScreen ||
element.msRequestFullscreen;
if( requestMethod ) {
requestMethod.apply( element );
}
}
/**
* Creates an HTML element and returns a reference to it.
* If the element already exists the existing instance will
* be returned.
*
* @param {HTMLElement} container
* @param {string} tagname
* @param {string} classname
* @param {string} innerHTML
*
* @return {HTMLElement}
*/
export const createSingletonNode = ( container, tagname, classname, innerHTML='' ) => {
// Find all nodes matching the description
let nodes = container.querySelectorAll( '.' + classname );
// Check all matches to find one which is a direct child of
// the specified container
for( let i = 0; i < nodes.length; i++ ) {
let testNode = nodes[i];
if( testNode.parentNode === container ) {
return testNode;
}
}
// If no node was found, create it now
let node = document.createElement( tagname );
node.className = classname;
node.innerHTML = innerHTML;
container.appendChild( node );
return node;
}
/**
* Injects the given CSS styles into the DOM.
*
* @param {string} value
*/
export const createStyleSheet = ( value ) => {
let tag = document.createElement( 'style' );
tag.type = 'text/css';
if( value && value.length > 0 ) {
if( tag.styleSheet ) {
tag.styleSheet.cssText = value;
}
else {
tag.appendChild( document.createTextNode( value ) );
}
}
document.head.appendChild( tag );
return tag;
}
/**
* Returns a key:value hash of all query params.
*/
export const getQueryHash = () => {
let query = {};
location.search.replace( /[A-Z0-9]+?=([\w\.%-]*)/gi, a => {
query[ a.split( '=' ).shift() ] = a.split( '=' ).pop();
} );
// Basic deserialization
for( let i in query ) {
let value = query[ i ];
query[ i ] = deserialize( unescape( value ) );
}
// Do not accept new dependencies via query config to avoid
// the potential of malicious script injection
if( typeof query['dependencies'] !== 'undefined' ) delete query['dependencies'];
return query;
}
/**
* Returns the remaining height within the parent of the
* target element.
*
* remaining height = [ configured parent height ] - [ current parent height ]
*
* @param {HTMLElement} element
* @param {number} [height]
*/
export const getRemainingHeight = ( element, height = 0 ) => {
if( element ) {
let newHeight, oldHeight = element.style.height;
// Change the .stretch element height to 0 in order find the height of all
// the other elements
element.style.height = '0px';
// In Overview mode, the parent (.slide) height is set of 700px.
// Restore it temporarily to its natural height.
element.parentNode.style.height = 'auto';
newHeight = height - element.parentNode.offsetHeight;
// Restore the old height, just in case
element.style.height = oldHeight + 'px';
// Clear the parent (.slide) height. .removeProperty works in IE9+
element.parentNode.style.removeProperty('height');
return newHeight;
}
return height;
}
const fileExtensionToMimeMap = {
'mp4': 'video/mp4',
'm4a': 'video/mp4',
'ogv': 'video/ogg',
'mpeg': 'video/mpeg',
'webm': 'video/webm'
}
/**
* Guess the MIME type for common file formats.
*/
export const getMimeTypeFromFile = ( filename='' ) => {
return fileExtensionToMimeMap[filename.split('.').pop()]
}
/**
* Encodes a string for RFC3986-compliant URL format.
* https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/encodeURI#encoding_for_rfc3986
*
* @param {string} url
*/
export const encodeRFC3986URI = ( url='' ) => {
return encodeURI(url)
.replace(/%5B/g, "[")
.replace(/%5D/g, "]")
.replace(
/[!'()*]/g,
(c) => `%${c.charCodeAt(0).toString(16).toUpperCase()}`
);
}

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{
"name": "reveal.js",
"version": "5.0.4",
"description": "The HTML Presentation Framework",
"homepage": "https://revealjs.com",
"subdomain": "revealjs",
"main": "dist/reveal.js",
"module": "dist/reveal.esm.js",
"license": "MIT",
"scripts": {
"test": "gulp test",
"start": "gulp serve",
"build": "gulp build"
},
"author": {
"name": "Hakim El Hattab",
"email": "hakim.elhattab@gmail.com",
"web": "https://hakim.se"
},
"repository": {
"type": "git",
"url": "git://github.com/hakimel/reveal.js.git"
},
"engines": {
"node": ">=18.0.0"
},
"keywords": [
"reveal",
"slides",
"presentation"
],
"devDependencies": {
"@babel/core": "^7.23.2",
"@babel/eslint-parser": "^7.22.15",
"@babel/preset-env": "^7.23.2",
"@rollup/plugin-babel": "^6.0.4",
"@rollup/plugin-commonjs": "^25.0.7",
"@rollup/plugin-node-resolve": "^15.2.3",
"@rollup/plugin-terser": "^0.4.4",
"babel-plugin-transform-html-import-to-string": "2.0.0",
"colors": "^1.4.0",
"core-js": "^3.33.1",
"fitty": "^2.3.7",
"glob": "^10.3.10",
"gulp": "^4.0.2",
"gulp-autoprefixer": "^8.0.0",
"gulp-clean-css": "^4.3.0",
"gulp-connect": "^5.7.0",
"gulp-eslint": "^6.0.0",
"gulp-header": "^2.0.9",
"gulp-tap": "^2.0.0",
"gulp-zip": "^5.1.0",
"highlight.js": "^11.9.0",
"marked": "^4.3.0",
"node-qunit-puppeteer": "^2.1.2",
"qunit": "^2.20.0",
"rollup": "^4.1.5",
"sass": "^1.69.5",
"yargs": "^17.7.2"
},
"overrides": {
"chokidar": "3.5.3",
"glob-parent": "6.0.2"
},
"browserslist": "> 2%, not dead",
"eslintConfig": {
"env": {
"browser": true,
"es6": true
},
"parser": "@babel/eslint-parser",
"parserOptions": {
"sourceType": "module",
"allowImportExportEverywhere": true,
"requireConfigFile": false
},
"globals": {
"module": false,
"console": false,
"unescape": false,
"define": false,
"exports": false
},
"rules": {
"curly": 0,
"eqeqeq": 2,
"wrap-iife": [
2,
"any"
],
"no-use-before-define": [
2,
{
"functions": false
}
],
"new-cap": 2,
"no-caller": 2,
"dot-notation": 0,
"no-eq-null": 2,
"no-unused-expressions": 0
}
}
}

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/*
Monokai style - ported by Luigi Maselli - http://grigio.org
*/
.hljs {
display: block;
overflow-x: auto;
padding: 0.5em;
background: #272822;
color: #ddd;
}
.hljs-tag,
.hljs-keyword,
.hljs-selector-tag,
.hljs-literal,
.hljs-strong,
.hljs-name {
color: #f92672;
}
.hljs-code {
color: #66d9ef;
}
.hljs-class .hljs-title {
color: white;
}
.hljs-attribute,
.hljs-symbol,
.hljs-regexp,
.hljs-link {
color: #bf79db;
}
.hljs-string,
.hljs-bullet,
.hljs-subst,
.hljs-title,
.hljs-section,
.hljs-emphasis,
.hljs-type,
.hljs-built_in,
.hljs-builtin-name,
.hljs-selector-attr,
.hljs-selector-pseudo,
.hljs-addition,
.hljs-variable,
.hljs-template-tag,
.hljs-template-variable {
color: #a6e22e;
}
.hljs-comment,
.hljs-quote,
.hljs-deletion,
.hljs-meta {
color: #75715e;
}
.hljs-keyword,
.hljs-selector-tag,
.hljs-literal,
.hljs-doctag,
.hljs-title,
.hljs-section,
.hljs-type,
.hljs-selector-id {
font-weight: bold;
}

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import hljs from 'highlight.js';
/* highlightjs-line-numbers.js 2.8.0 | (C) 2018 Yauheni Pakala | MIT License | github.com/wcoder/highlightjs-line-numbers.js */
!function(r,o){"use strict";var e,i="hljs-ln",l="hljs-ln-line",h="hljs-ln-code",s="hljs-ln-numbers",c="hljs-ln-n",m="data-line-number",a=/\r\n|\r|\n/g;function u(e){for(var n=e.toString(),t=e.anchorNode;"TD"!==t.nodeName;)t=t.parentNode;for(var r=e.focusNode;"TD"!==r.nodeName;)r=r.parentNode;var o=parseInt(t.dataset.lineNumber),a=parseInt(r.dataset.lineNumber);if(o==a)return n;var i,l=t.textContent,s=r.textContent;for(a<o&&(i=o,o=a,a=i,i=l,l=s,s=i);0!==n.indexOf(l);)l=l.slice(1);for(;-1===n.lastIndexOf(s);)s=s.slice(0,-1);for(var c=l,u=function(e){for(var n=e;"TABLE"!==n.nodeName;)n=n.parentNode;return n}(t),d=o+1;d<a;++d){var f=p('.{0}[{1}="{2}"]',[h,m,d]);c+="\n"+u.querySelector(f).textContent}return c+="\n"+s}function n(e){try{var n=o.querySelectorAll("code.hljs,code.nohighlight");for(var t in n)n.hasOwnProperty(t)&&(n[t].classList.contains("nohljsln")||d(n[t],e))}catch(e){r.console.error("LineNumbers error: ",e)}}function d(e,n){if("object"==typeof e)e.innerHTML=f(e,n)}function f(e,n){var t,r,o=(t=e,{singleLine:function(e){return!!e.singleLine&&e.singleLine}(r=(r=n)||{}),startFrom:function(e,n){var t=1;isFinite(n.startFrom)&&(t=n.startFrom);var r=function(e,n){return e.hasAttribute(n)?e.getAttribute(n):null}(e,"data-ln-start-from");return null!==r&&(t=function(e,n){if(!e)return n;var t=Number(e);return isFinite(t)?t:n}(r,1)),t}(t,r)});return function e(n){var t=n.childNodes;for(var r in t){var o;t.hasOwnProperty(r)&&(o=t[r],0<(o.textContent.trim().match(a)||[]).length&&(0<o.childNodes.length?e(o):v(o.parentNode)))}}(e),function(e,n){var t=g(e);""===t[t.length-1].trim()&&t.pop();if(1<t.length||n.singleLine){for(var r="",o=0,a=t.length;o<a;o++)r+=p('<tr><td class="{0} {1}" {3}="{5}"><div class="{2}" {3}="{5}"></div></td><td class="{0} {4}" {3}="{5}">{6}</td></tr>',[l,s,c,m,h,o+n.startFrom,0<t[o].length?t[o]:" "]);return p('<table class="{0}">{1}</table>',[i,r])}return e}(e.innerHTML,o)}function v(e){var n=e.className;if(/hljs-/.test(n)){for(var t=g(e.innerHTML),r=0,o="";r<t.length;r++){o+=p('<span class="{0}">{1}</span>\n',[n,0<t[r].length?t[r]:" "])}e.innerHTML=o.trim()}}function g(e){return 0===e.length?[]:e.split(a)}function p(e,t){return e.replace(/\{(\d+)\}/g,function(e,n){return void 0!==t[n]?t[n]:e})}hljs?(hljs.initLineNumbersOnLoad=function(e){"interactive"===o.readyState||"complete"===o.readyState?n(e):r.addEventListener("DOMContentLoaded",function(){n(e)})},hljs.lineNumbersBlock=d,hljs.lineNumbersValue=function(e,n){if("string"!=typeof e)return;var t=document.createElement("code");return t.innerHTML=e,f(t,n)},(e=o.createElement("style")).type="text/css",e.innerHTML=p(".{0}{border-collapse:collapse}.{0} td{padding:0}.{1}:before{content:attr({2})}",[i,c,m]),o.getElementsByTagName("head")[0].appendChild(e)):r.console.error("highlight.js not detected!"),document.addEventListener("copy",function(e){var n,t=window.getSelection();!function(e){for(var n=e;n;){if(n.className&&-1!==n.className.indexOf("hljs-ln-code"))return 1;n=n.parentNode}}(t.anchorNode)||(n=-1!==window.navigator.userAgent.indexOf("Edge")?u(t):t.toString(),e.clipboardData.setData("text/plain",n),e.preventDefault())})}(window,document);
/*!
* reveal.js plugin that adds syntax highlight support.
*/
const Plugin = {
id: 'highlight',
HIGHLIGHT_STEP_DELIMITER: '|',
HIGHLIGHT_LINE_DELIMITER: ',',
HIGHLIGHT_LINE_RANGE_DELIMITER: '-',
hljs,
/**
* Highlights code blocks within the given deck.
*
* Note that this can be called multiple times if
* there are multiple presentations on one page.
*
* @param {Reveal} reveal the reveal.js instance
*/
init: function( reveal ) {
// Read the plugin config options and provide fallbacks
let config = reveal.getConfig().highlight || {};
config.highlightOnLoad = typeof config.highlightOnLoad === 'boolean' ? config.highlightOnLoad : true;
config.escapeHTML = typeof config.escapeHTML === 'boolean' ? config.escapeHTML : true;
Array.from( reveal.getRevealElement().querySelectorAll( 'pre code' ) ).forEach( block => {
block.parentNode.classList.add('code-wrapper');
// Code can optionally be wrapped in script template to avoid
// HTML being parsed by the browser (i.e. when you need to
// include <, > or & in your code).
let substitute = block.querySelector( 'script[type="text/template"]' );
if( substitute ) {
// textContent handles the HTML entity escapes for us
block.textContent = substitute.innerHTML;
}
// Trim whitespace if the "data-trim" attribute is present
if( block.hasAttribute( 'data-trim' ) && typeof block.innerHTML.trim === 'function' ) {
block.innerHTML = betterTrim( block );
}
// Escape HTML tags unless the "data-noescape" attrbute is present
if( config.escapeHTML && !block.hasAttribute( 'data-noescape' )) {
block.innerHTML = block.innerHTML.replace( /</g,"&lt;").replace(/>/g, '&gt;' );
}
// Re-highlight when focus is lost (for contenteditable code)
block.addEventListener( 'focusout', function( event ) {
hljs.highlightElement( event.currentTarget );
}, false );
} );
// Triggers a callback function before we trigger highlighting
if( typeof config.beforeHighlight === 'function' ) {
config.beforeHighlight( hljs );
}
// Run initial highlighting for all code
if( config.highlightOnLoad ) {
Array.from( reveal.getRevealElement().querySelectorAll( 'pre code' ) ).forEach( block => {
Plugin.highlightBlock( block );
} );
}
// If we're printing to PDF, scroll the code highlights of
// all blocks in the deck into view at once
reveal.on( 'pdf-ready', function() {
[].slice.call( reveal.getRevealElement().querySelectorAll( 'pre code[data-line-numbers].current-fragment' ) ).forEach( function( block ) {
Plugin.scrollHighlightedLineIntoView( block, {}, true );
} );
} );
},
/**
* Highlights a code block. If the <code> node has the
* 'data-line-numbers' attribute we also generate slide
* numbers.
*
* If the block contains multiple line highlight steps,
* we clone the block and create a fragment for each step.
*/
highlightBlock: function( block ) {
hljs.highlightElement( block );
// Don't generate line numbers for empty code blocks
if( block.innerHTML.trim().length === 0 ) return;
if( block.hasAttribute( 'data-line-numbers' ) ) {
hljs.lineNumbersBlock( block, { singleLine: true } );
var scrollState = { currentBlock: block };
// If there is more than one highlight step, generate
// fragments
var highlightSteps = Plugin.deserializeHighlightSteps( block.getAttribute( 'data-line-numbers' ) );
if( highlightSteps.length > 1 ) {
// If the original code block has a fragment-index,
// each clone should follow in an incremental sequence
var fragmentIndex = parseInt( block.getAttribute( 'data-fragment-index' ), 10 );
if( typeof fragmentIndex !== 'number' || isNaN( fragmentIndex ) ) {
fragmentIndex = null;
}
// Generate fragments for all steps except the original block
highlightSteps.slice(1).forEach( function( highlight ) {
var fragmentBlock = block.cloneNode( true );
fragmentBlock.setAttribute( 'data-line-numbers', Plugin.serializeHighlightSteps( [ highlight ] ) );
fragmentBlock.classList.add( 'fragment' );
block.parentNode.appendChild( fragmentBlock );
Plugin.highlightLines( fragmentBlock );
if( typeof fragmentIndex === 'number' ) {
fragmentBlock.setAttribute( 'data-fragment-index', fragmentIndex );
fragmentIndex += 1;
}
else {
fragmentBlock.removeAttribute( 'data-fragment-index' );
}
// Scroll highlights into view as we step through them
fragmentBlock.addEventListener( 'visible', Plugin.scrollHighlightedLineIntoView.bind( Plugin, fragmentBlock, scrollState ) );
fragmentBlock.addEventListener( 'hidden', Plugin.scrollHighlightedLineIntoView.bind( Plugin, fragmentBlock.previousElementSibling, scrollState ) );
} );
block.removeAttribute( 'data-fragment-index' );
block.setAttribute( 'data-line-numbers', Plugin.serializeHighlightSteps( [ highlightSteps[0] ] ) );
}
// Scroll the first highlight into view when the slide
// becomes visible. Note supported in IE11 since it lacks
// support for Element.closest.
var slide = typeof block.closest === 'function' ? block.closest( 'section:not(.stack)' ) : null;
if( slide ) {
var scrollFirstHighlightIntoView = function() {
Plugin.scrollHighlightedLineIntoView( block, scrollState, true );
slide.removeEventListener( 'visible', scrollFirstHighlightIntoView );
}
slide.addEventListener( 'visible', scrollFirstHighlightIntoView );
}
Plugin.highlightLines( block );
}
},
/**
* Animates scrolling to the first highlighted line
* in the given code block.
*/
scrollHighlightedLineIntoView: function( block, scrollState, skipAnimation ) {
cancelAnimationFrame( scrollState.animationFrameID );
// Match the scroll position of the currently visible
// code block
if( scrollState.currentBlock ) {
block.scrollTop = scrollState.currentBlock.scrollTop;
}
// Remember the current code block so that we can match
// its scroll position when showing/hiding fragments
scrollState.currentBlock = block;
var highlightBounds = this.getHighlightedLineBounds( block )
var viewportHeight = block.offsetHeight;
// Subtract padding from the viewport height
var blockStyles = getComputedStyle( block );
viewportHeight -= parseInt( blockStyles.paddingTop ) + parseInt( blockStyles.paddingBottom );
// Scroll position which centers all highlights
var startTop = block.scrollTop;
var targetTop = highlightBounds.top + ( Math.min( highlightBounds.bottom - highlightBounds.top, viewportHeight ) - viewportHeight ) / 2;
// Account for offsets in position applied to the
// <table> that holds our lines of code
var lineTable = block.querySelector( '.hljs-ln' );
if( lineTable ) targetTop += lineTable.offsetTop - parseInt( blockStyles.paddingTop );
// Make sure the scroll target is within bounds
targetTop = Math.max( Math.min( targetTop, block.scrollHeight - viewportHeight ), 0 );
if( skipAnimation === true || startTop === targetTop ) {
block.scrollTop = targetTop;
}
else {
// Don't attempt to scroll if there is no overflow
if( block.scrollHeight <= viewportHeight ) return;
var time = 0;
var animate = function() {
time = Math.min( time + 0.02, 1 );
// Update our eased scroll position
block.scrollTop = startTop + ( targetTop - startTop ) * Plugin.easeInOutQuart( time );
// Keep animating unless we've reached the end
if( time < 1 ) {
scrollState.animationFrameID = requestAnimationFrame( animate );
}
};
animate();
}
},
/**
* The easing function used when scrolling.
*/
easeInOutQuart: function( t ) {
// easeInOutQuart
return t<.5 ? 8*t*t*t*t : 1-8*(--t)*t*t*t;
},
getHighlightedLineBounds: function( block ) {
var highlightedLines = block.querySelectorAll( '.highlight-line' );
if( highlightedLines.length === 0 ) {
return { top: 0, bottom: 0 };
}
else {
var firstHighlight = highlightedLines[0];
var lastHighlight = highlightedLines[ highlightedLines.length -1 ];
return {
top: firstHighlight.offsetTop,
bottom: lastHighlight.offsetTop + lastHighlight.offsetHeight
}
}
},
/**
* Visually emphasize specific lines within a code block.
* This only works on blocks with line numbering turned on.
*
* @param {HTMLElement} block a <code> block
* @param {String} [linesToHighlight] The lines that should be
* highlighted in this format:
* "1" = highlights line 1
* "2,5" = highlights lines 2 & 5
* "2,5-7" = highlights lines 2, 5, 6 & 7
*/
highlightLines: function( block, linesToHighlight ) {
var highlightSteps = Plugin.deserializeHighlightSteps( linesToHighlight || block.getAttribute( 'data-line-numbers' ) );
if( highlightSteps.length ) {
highlightSteps[0].forEach( function( highlight ) {
var elementsToHighlight = [];
// Highlight a range
if( typeof highlight.end === 'number' ) {
elementsToHighlight = [].slice.call( block.querySelectorAll( 'table tr:nth-child(n+'+highlight.start+'):nth-child(-n+'+highlight.end+')' ) );
}
// Highlight a single line
else if( typeof highlight.start === 'number' ) {
elementsToHighlight = [].slice.call( block.querySelectorAll( 'table tr:nth-child('+highlight.start+')' ) );
}
if( elementsToHighlight.length ) {
elementsToHighlight.forEach( function( lineElement ) {
lineElement.classList.add( 'highlight-line' );
} );
block.classList.add( 'has-highlights' );
}
} );
}
},
/**
* Parses and formats a user-defined string of line
* numbers to highlight.
*
* @example
* Plugin.deserializeHighlightSteps( '1,2|3,5-10' )
* // [
* // [ { start: 1 }, { start: 2 } ],
* // [ { start: 3 }, { start: 5, end: 10 } ]
* // ]
*/
deserializeHighlightSteps: function( highlightSteps ) {
// Remove whitespace
highlightSteps = highlightSteps.replace( /\s/g, '' );
// Divide up our line number groups
highlightSteps = highlightSteps.split( Plugin.HIGHLIGHT_STEP_DELIMITER );
return highlightSteps.map( function( highlights ) {
return highlights.split( Plugin.HIGHLIGHT_LINE_DELIMITER ).map( function( highlight ) {
// Parse valid line numbers
if( /^[\d-]+$/.test( highlight ) ) {
highlight = highlight.split( Plugin.HIGHLIGHT_LINE_RANGE_DELIMITER );
var lineStart = parseInt( highlight[0], 10 ),
lineEnd = parseInt( highlight[1], 10 );
if( isNaN( lineEnd ) ) {
return {
start: lineStart
};
}
else {
return {
start: lineStart,
end: lineEnd
};
}
}
// If no line numbers are provided, no code will be highlighted
else {
return {};
}
} );
} );
},
/**
* Serializes parsed line number data into a string so
* that we can store it in the DOM.
*/
serializeHighlightSteps: function( highlightSteps ) {
return highlightSteps.map( function( highlights ) {
return highlights.map( function( highlight ) {
// Line range
if( typeof highlight.end === 'number' ) {
return highlight.start + Plugin.HIGHLIGHT_LINE_RANGE_DELIMITER + highlight.end;
}
// Single line
else if( typeof highlight.start === 'number' ) {
return highlight.start;
}
// All lines
else {
return '';
}
} ).join( Plugin.HIGHLIGHT_LINE_DELIMITER );
} ).join( Plugin.HIGHLIGHT_STEP_DELIMITER );
}
}
// Function to perform a better "data-trim" on code snippets
// Will slice an indentation amount on each line of the snippet (amount based on the line having the lowest indentation length)
function betterTrim(snippetEl) {
// Helper functions
function trimLeft(val) {
// Adapted from https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/String/Trim#Polyfill
return val.replace(/^[\s\uFEFF\xA0]+/g, '');
}
function trimLineBreaks(input) {
var lines = input.split('\n');
// Trim line-breaks from the beginning
for (var i = 0; i < lines.length; i++) {
if (lines[i].trim() === '') {
lines.splice(i--, 1);
} else break;
}
// Trim line-breaks from the end
for (var i = lines.length-1; i >= 0; i--) {
if (lines[i].trim() === '') {
lines.splice(i, 1);
} else break;
}
return lines.join('\n');
}
// Main function for betterTrim()
return (function(snippetEl) {
var content = trimLineBreaks(snippetEl.innerHTML);
var lines = content.split('\n');
// Calculate the minimum amount to remove on each line start of the snippet (can be 0)
var pad = lines.reduce(function(acc, line) {
if (line.length > 0 && trimLeft(line).length > 0 && acc > line.length - trimLeft(line).length) {
return line.length - trimLeft(line).length;
}
return acc;
}, Number.POSITIVE_INFINITY);
// Slice each line with this amount
return lines.map(function(line, index) {
return line.slice(pad);
})
.join('\n');
})(snippetEl);
}
export default () => Plugin;

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/*
Zenburn style from voldmar.ru (c) Vladimir Epifanov <voldmar@voldmar.ru>
based on dark.css by Ivan Sagalaev
*/
.hljs {
display: block;
overflow-x: auto;
padding: 0.5em;
background: #3f3f3f;
color: #dcdcdc;
}
.hljs-keyword,
.hljs-selector-tag,
.hljs-tag {
color: #e3ceab;
}
.hljs-template-tag {
color: #dcdcdc;
}
.hljs-number {
color: #8cd0d3;
}
.hljs-variable,
.hljs-template-variable,
.hljs-attribute {
color: #efdcbc;
}
.hljs-literal {
color: #efefaf;
}
.hljs-subst {
color: #8f8f8f;
}
.hljs-title,
.hljs-name,
.hljs-selector-id,
.hljs-selector-class,
.hljs-section,
.hljs-type {
color: #efef8f;
}
.hljs-symbol,
.hljs-bullet,
.hljs-link {
color: #dca3a3;
}
.hljs-deletion,
.hljs-string,
.hljs-built_in,
.hljs-builtin-name {
color: #cc9393;
}
.hljs-addition,
.hljs-comment,
.hljs-quote,
.hljs-meta {
color: #7f9f7f;
}
.hljs-emphasis {
font-style: italic;
}
.hljs-strong {
font-weight: bold;
}

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/*!
* The reveal.js markdown plugin. Handles parsing of
* markdown inside of presentations as well as loading
* of external markdown documents.
*/
import { marked } from 'marked';
const DEFAULT_SLIDE_SEPARATOR = '\r?\n---\r?\n',
DEFAULT_VERTICAL_SEPARATOR = null,
DEFAULT_NOTES_SEPARATOR = '^\s*notes?:',
DEFAULT_ELEMENT_ATTRIBUTES_SEPARATOR = '\\\.element\\\s*?(.+?)$',
DEFAULT_SLIDE_ATTRIBUTES_SEPARATOR = '\\\.slide:\\\s*?(\\\S.+?)$';
const SCRIPT_END_PLACEHOLDER = '__SCRIPT_END__';
// match an optional line number offset and highlight line numbers
// [<line numbers>] or [<offset>: <line numbers>]
const CODE_LINE_NUMBER_REGEX = /\[\s*((\d*):)?\s*([\s\d,|-]*)\]/;
const HTML_ESCAPE_MAP = {
'&': '&amp;',
'<': '&lt;',
'>': '&gt;',
'"': '&quot;',
"'": '&#39;'
};
const Plugin = () => {
// The reveal.js instance this plugin is attached to
let deck;
/**
* Retrieves the markdown contents of a slide section
* element. Normalizes leading tabs/whitespace.
*/
function getMarkdownFromSlide( section ) {
// look for a <script> or <textarea data-template> wrapper
const template = section.querySelector( '[data-template]' ) || section.querySelector( 'script' );
// strip leading whitespace so it isn't evaluated as code
let text = ( template || section ).textContent;
// restore script end tags
text = text.replace( new RegExp( SCRIPT_END_PLACEHOLDER, 'g' ), '</script>' );
const leadingWs = text.match( /^\n?(\s*)/ )[1].length,
leadingTabs = text.match( /^\n?(\t*)/ )[1].length;
if( leadingTabs > 0 ) {
text = text.replace( new RegExp('\\n?\\t{' + leadingTabs + '}(.*)','g'), function(m, p1) { return '\n' + p1 ; } );
}
else if( leadingWs > 1 ) {
text = text.replace( new RegExp('\\n? {' + leadingWs + '}(.*)', 'g'), function(m, p1) { return '\n' + p1 ; } );
}
return text;
}
/**
* Given a markdown slide section element, this will
* return all arguments that aren't related to markdown
* parsing. Used to forward any other user-defined arguments
* to the output markdown slide.
*/
function getForwardedAttributes( section ) {
const attributes = section.attributes;
const result = [];
for( let i = 0, len = attributes.length; i < len; i++ ) {
const name = attributes[i].name,
value = attributes[i].value;
// disregard attributes that are used for markdown loading/parsing
if( /data\-(markdown|separator|vertical|notes)/gi.test( name ) ) continue;
if( value ) {
result.push( name + '="' + value + '"' );
}
else {
result.push( name );
}
}
return result.join( ' ' );
}
/**
* Inspects the given options and fills out default
* values for what's not defined.
*/
function getSlidifyOptions( options ) {
const markdownConfig = deck?.getConfig?.().markdown;
options = options || {};
options.separator = options.separator || markdownConfig?.separator || DEFAULT_SLIDE_SEPARATOR;
options.verticalSeparator = options.verticalSeparator || markdownConfig?.verticalSeparator || DEFAULT_VERTICAL_SEPARATOR;
options.notesSeparator = options.notesSeparator || markdownConfig?.notesSeparator || DEFAULT_NOTES_SEPARATOR;
options.attributes = options.attributes || '';
return options;
}
/**
* Helper function for constructing a markdown slide.
*/
function createMarkdownSlide( content, options ) {
options = getSlidifyOptions( options );
const notesMatch = content.split( new RegExp( options.notesSeparator, 'mgi' ) );
if( notesMatch.length === 2 ) {
content = notesMatch[0] + '<aside class="notes">' + marked(notesMatch[1].trim()) + '</aside>';
}
// prevent script end tags in the content from interfering
// with parsing
content = content.replace( /<\/script>/g, SCRIPT_END_PLACEHOLDER );
return '<script type="text/template">' + content + '</script>';
}
/**
* Parses a data string into multiple slides based
* on the passed in separator arguments.
*/
function slidify( markdown, options ) {
options = getSlidifyOptions( options );
const separatorRegex = new RegExp( options.separator + ( options.verticalSeparator ? '|' + options.verticalSeparator : '' ), 'mg' ),
horizontalSeparatorRegex = new RegExp( options.separator );
let matches,
lastIndex = 0,
isHorizontal,
wasHorizontal = true,
content,
sectionStack = [];
// iterate until all blocks between separators are stacked up
while( matches = separatorRegex.exec( markdown ) ) {
const notes = null;
// determine direction (horizontal by default)
isHorizontal = horizontalSeparatorRegex.test( matches[0] );
if( !isHorizontal && wasHorizontal ) {
// create vertical stack
sectionStack.push( [] );
}
// pluck slide content from markdown input
content = markdown.substring( lastIndex, matches.index );
if( isHorizontal && wasHorizontal ) {
// add to horizontal stack
sectionStack.push( content );
}
else {
// add to vertical stack
sectionStack[sectionStack.length-1].push( content );
}
lastIndex = separatorRegex.lastIndex;
wasHorizontal = isHorizontal;
}
// add the remaining slide
( wasHorizontal ? sectionStack : sectionStack[sectionStack.length-1] ).push( markdown.substring( lastIndex ) );
let markdownSections = '';
// flatten the hierarchical stack, and insert <section data-markdown> tags
for( let i = 0, len = sectionStack.length; i < len; i++ ) {
// vertical
if( sectionStack[i] instanceof Array ) {
markdownSections += '<section '+ options.attributes +'>';
sectionStack[i].forEach( function( child ) {
markdownSections += '<section data-markdown>' + createMarkdownSlide( child, options ) + '</section>';
} );
markdownSections += '</section>';
}
else {
markdownSections += '<section '+ options.attributes +' data-markdown>' + createMarkdownSlide( sectionStack[i], options ) + '</section>';
}
}
return markdownSections;
}
/**
* Parses any current data-markdown slides, splits
* multi-slide markdown into separate sections and
* handles loading of external markdown.
*/
function processSlides( scope ) {
return new Promise( function( resolve ) {
const externalPromises = [];
[].slice.call( scope.querySelectorAll( 'section[data-markdown]:not([data-markdown-parsed])') ).forEach( function( section, i ) {
if( section.getAttribute( 'data-markdown' ).length ) {
externalPromises.push( loadExternalMarkdown( section ).then(
// Finished loading external file
function( xhr, url ) {
section.outerHTML = slidify( xhr.responseText, {
separator: section.getAttribute( 'data-separator' ),
verticalSeparator: section.getAttribute( 'data-separator-vertical' ),
notesSeparator: section.getAttribute( 'data-separator-notes' ),
attributes: getForwardedAttributes( section )
});
},
// Failed to load markdown
function( xhr, url ) {
section.outerHTML = '<section data-state="alert">' +
'ERROR: The attempt to fetch ' + url + ' failed with HTTP status ' + xhr.status + '.' +
'Check your browser\'s JavaScript console for more details.' +
'<p>Remember that you need to serve the presentation HTML from a HTTP server.</p>' +
'</section>';
}
) );
}
else {
section.outerHTML = slidify( getMarkdownFromSlide( section ), {
separator: section.getAttribute( 'data-separator' ),
verticalSeparator: section.getAttribute( 'data-separator-vertical' ),
notesSeparator: section.getAttribute( 'data-separator-notes' ),
attributes: getForwardedAttributes( section )
});
}
});
Promise.all( externalPromises ).then( resolve );
} );
}
function loadExternalMarkdown( section ) {
return new Promise( function( resolve, reject ) {
const xhr = new XMLHttpRequest(),
url = section.getAttribute( 'data-markdown' );
const datacharset = section.getAttribute( 'data-charset' );
// see https://developer.mozilla.org/en-US/docs/Web/API/element.getAttribute#Notes
if( datacharset !== null && datacharset !== '' ) {
xhr.overrideMimeType( 'text/html; charset=' + datacharset );
}
xhr.onreadystatechange = function( section, xhr ) {
if( xhr.readyState === 4 ) {
// file protocol yields status code 0 (useful for local debug, mobile applications etc.)
if ( ( xhr.status >= 200 && xhr.status < 300 ) || xhr.status === 0 ) {
resolve( xhr, url );
}
else {
reject( xhr, url );
}
}
}.bind( this, section, xhr );
xhr.open( 'GET', url, true );
try {
xhr.send();
}
catch ( e ) {
console.warn( 'Failed to get the Markdown file ' + url + '. Make sure that the presentation and the file are served by a HTTP server and the file can be found there. ' + e );
resolve( xhr, url );
}
} );
}
/**
* Check if a node value has the attributes pattern.
* If yes, extract it and add that value as one or several attributes
* to the target element.
*
* You need Cache Killer on Chrome to see the effect on any FOM transformation
* directly on refresh (F5)
* http://stackoverflow.com/questions/5690269/disabling-chrome-cache-for-website-development/7000899#answer-11786277
*/
function addAttributeInElement( node, elementTarget, separator ) {
const markdownClassesInElementsRegex = new RegExp( separator, 'mg' );
const markdownClassRegex = new RegExp( "([^\"= ]+?)=\"([^\"]+?)\"|(data-[^\"= ]+?)(?=[\" ])", 'mg' );
let nodeValue = node.nodeValue;
let matches,
matchesClass;
if( matches = markdownClassesInElementsRegex.exec( nodeValue ) ) {
const classes = matches[1];
nodeValue = nodeValue.substring( 0, matches.index ) + nodeValue.substring( markdownClassesInElementsRegex.lastIndex );
node.nodeValue = nodeValue;
while( matchesClass = markdownClassRegex.exec( classes ) ) {
if( matchesClass[2] ) {
elementTarget.setAttribute( matchesClass[1], matchesClass[2] );
} else {
elementTarget.setAttribute( matchesClass[3], "" );
}
}
return true;
}
return false;
}
/**
* Add attributes to the parent element of a text node,
* or the element of an attribute node.
*/
function addAttributes( section, element, previousElement, separatorElementAttributes, separatorSectionAttributes ) {
if ( element !== null && element.childNodes !== undefined && element.childNodes.length > 0 ) {
let previousParentElement = element;
for( let i = 0; i < element.childNodes.length; i++ ) {
const childElement = element.childNodes[i];
if ( i > 0 ) {
let j = i - 1;
while ( j >= 0 ) {
const aPreviousChildElement = element.childNodes[j];
if ( typeof aPreviousChildElement.setAttribute === 'function' && aPreviousChildElement.tagName !== "BR" ) {
previousParentElement = aPreviousChildElement;
break;
}
j = j - 1;
}
}
let parentSection = section;
if( childElement.nodeName === "section" ) {
parentSection = childElement ;
previousParentElement = childElement ;
}
if ( typeof childElement.setAttribute === 'function' || childElement.nodeType === Node.COMMENT_NODE ) {
addAttributes( parentSection, childElement, previousParentElement, separatorElementAttributes, separatorSectionAttributes );
}
}
}
if ( element.nodeType === Node.COMMENT_NODE ) {
if ( addAttributeInElement( element, previousElement, separatorElementAttributes ) === false ) {
addAttributeInElement( element, section, separatorSectionAttributes );
}
}
}
/**
* Converts any current data-markdown slides in the
* DOM to HTML.
*/
function convertSlides() {
const sections = deck.getRevealElement().querySelectorAll( '[data-markdown]:not([data-markdown-parsed])');
[].slice.call( sections ).forEach( function( section ) {
section.setAttribute( 'data-markdown-parsed', true )
const notes = section.querySelector( 'aside.notes' );
const markdown = getMarkdownFromSlide( section );
section.innerHTML = marked( markdown );
addAttributes( section, section, null, section.getAttribute( 'data-element-attributes' ) ||
section.parentNode.getAttribute( 'data-element-attributes' ) ||
DEFAULT_ELEMENT_ATTRIBUTES_SEPARATOR,
section.getAttribute( 'data-attributes' ) ||
section.parentNode.getAttribute( 'data-attributes' ) ||
DEFAULT_SLIDE_ATTRIBUTES_SEPARATOR);
// If there were notes, we need to re-add them after
// having overwritten the section's HTML
if( notes ) {
section.appendChild( notes );
}
} );
return Promise.resolve();
}
function escapeForHTML( input ) {
return input.replace( /([&<>'"])/g, char => HTML_ESCAPE_MAP[char] );
}
return {
id: 'markdown',
/**
* Starts processing and converting Markdown within the
* current reveal.js deck.
*/
init: function( reveal ) {
deck = reveal;
let { renderer, animateLists, ...markedOptions } = deck.getConfig().markdown || {};
if( !renderer ) {
renderer = new marked.Renderer();
renderer.code = ( code, language ) => {
// Off by default
let lineNumberOffset = '';
let lineNumbers = '';
// Users can opt in to show line numbers and highlight
// specific lines.
// ```javascript [] show line numbers
// ```javascript [1,4-8] highlights lines 1 and 4-8
// optional line number offset:
// ```javascript [25: 1,4-8] start line numbering at 25,
// highlights lines 1 (numbered as 25) and 4-8 (numbered as 28-32)
if( CODE_LINE_NUMBER_REGEX.test( language ) ) {
let lineNumberOffsetMatch = language.match( CODE_LINE_NUMBER_REGEX )[2];
if (lineNumberOffsetMatch){
lineNumberOffset = `data-ln-start-from="${lineNumberOffsetMatch.trim()}"`;
}
lineNumbers = language.match( CODE_LINE_NUMBER_REGEX )[3].trim();
lineNumbers = `data-line-numbers="${lineNumbers}"`;
language = language.replace( CODE_LINE_NUMBER_REGEX, '' ).trim();
}
// Escape before this gets injected into the DOM to
// avoid having the HTML parser alter our code before
// highlight.js is able to read it
code = escapeForHTML( code );
// return `<pre><code ${lineNumbers} class="${language}">${code}</code></pre>`;
return `<pre><code ${lineNumbers} ${lineNumberOffset} class="${language}">${code}</code></pre>`;
};
}
if( animateLists === true ) {
renderer.listitem = text => `<li class="fragment">${text}</li>`;
}
marked.setOptions( {
renderer,
...markedOptions
} );
return processSlides( deck.getRevealElement() ).then( convertSlides );
},
// TODO: Do these belong in the API?
processSlides: processSlides,
convertSlides: convertSlides,
slidify: slidify,
marked: marked
}
};
export default Plugin;

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/**
* A plugin which enables rendering of math equations inside
* of reveal.js slides. Essentially a thin wrapper for KaTeX.
*
* @author Hakim El Hattab
* @author Gerhard Burger
*/
export const KaTeX = () => {
let deck;
let defaultOptions = {
version: 'latest',
delimiters: [
{left: '$$', right: '$$', display: true}, // Note: $$ has to come before $
{left: '$', right: '$', display: false},
{left: '\\(', right: '\\)', display: false},
{left: '\\[', right: '\\]', display: true}
],
ignoredTags: ['script', 'noscript', 'style', 'textarea', 'pre']
}
const loadCss = src => {
let link = document.createElement('link');
link.rel = 'stylesheet';
link.href = src;
document.head.appendChild(link);
};
/**
* Loads a JavaScript file and returns a Promise for when it is loaded
* Credits: https://aaronsmith.online/easily-load-an-external-script-using-javascript/
*/
const loadScript = src => {
return new Promise((resolve, reject) => {
const script = document.createElement('script')
script.type = 'text/javascript'
script.onload = resolve
script.onerror = reject
script.src = src
document.head.append(script)
})
};
async function loadScripts(urls) {
for(const url of urls) {
await loadScript(url);
}
}
return {
id: 'katex',
init: function (reveal) {
deck = reveal;
let revealOptions = deck.getConfig().katex || {};
let options = {...defaultOptions, ...revealOptions};
const {local, version, extensions, ...katexOptions} = options;
let baseUrl = options.local || 'https://cdn.jsdelivr.net/npm/katex';
let versionString = options.local ? '' : '@' + options.version;
let cssUrl = baseUrl + versionString + '/dist/katex.min.css';
let katexUrl = baseUrl + versionString + '/dist/katex.min.js';
let mhchemUrl = baseUrl + versionString + '/dist/contrib/mhchem.min.js'
let karUrl = baseUrl + versionString + '/dist/contrib/auto-render.min.js';
let katexScripts = [katexUrl];
if(options.extensions && options.extensions.includes("mhchem")) {
katexScripts.push(mhchemUrl);
}
katexScripts.push(karUrl);
const renderMath = () => {
renderMathInElement(reveal.getSlidesElement(), katexOptions);
deck.layout();
}
loadCss(cssUrl);
// For some reason dynamically loading with defer attribute doesn't result in the expected behavior, the below code does
loadScripts(katexScripts).then(() => {
if( deck.isReady() ) {
renderMath();
}
else {
deck.on( 'ready', renderMath.bind( this ) );
}
});
}
}
};

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const t=()=>{let t,e={messageStyle:"none",tex2jax:{inlineMath:[["$","$"],["\\(","\\)"]],skipTags:["script","noscript","style","textarea","pre"]},skipStartupTypeset:!0};return{id:"mathjax2",init:function(a){t=a;let n=t.getConfig().mathjax2||t.getConfig().math||{},i={...e,...n},s=(i.mathjax||"https://cdn.jsdelivr.net/npm/mathjax@2/MathJax.js")+"?config="+(i.config||"TeX-AMS_HTML-full");i.tex2jax={...e.tex2jax,...n.tex2jax},i.mathjax=i.config=null,function(t,e){let a=document.querySelector("head"),n=document.createElement("script");n.type="text/javascript",n.src=t;let i=()=>{"function"==typeof e&&(e.call(),e=null)};n.onload=i,n.onreadystatechange=()=>{"loaded"===this.readyState&&i()},a.appendChild(n)}(s,(function(){MathJax.Hub.Config(i),MathJax.Hub.Queue(["Typeset",MathJax.Hub,t.getRevealElement()]),MathJax.Hub.Queue(t.layout),t.on("slidechanged",(function(t){MathJax.Hub.Queue(["Typeset",MathJax.Hub,t.currentSlide])}))}))}}},e=t;
/*!
* This plugin is a wrapper for the MathJax2,
* MathJax3 and KaTeX typesetter plugins.
*/
var a=Plugin=Object.assign(e(),{KaTeX:()=>{let t,e={version:"latest",delimiters:[{left:"$$",right:"$$",display:!0},{left:"$",right:"$",display:!1},{left:"\\(",right:"\\)",display:!1},{left:"\\[",right:"\\]",display:!0}],ignoredTags:["script","noscript","style","textarea","pre"]};const a=t=>new Promise(((e,a)=>{const n=document.createElement("script");n.type="text/javascript",n.onload=e,n.onerror=a,n.src=t,document.head.append(n)}));return{id:"katex",init:function(n){t=n;let i=t.getConfig().katex||{},s={...e,...i};const{local:l,version:o,extensions:r,...c}=s;let d=s.local||"https://cdn.jsdelivr.net/npm/katex",p=s.local?"":"@"+s.version,u=d+p+"/dist/katex.min.css",h=d+p+"/dist/contrib/mhchem.min.js",x=d+p+"/dist/contrib/auto-render.min.js",m=[d+p+"/dist/katex.min.js"];s.extensions&&s.extensions.includes("mhchem")&&m.push(h),m.push(x);const f=()=>{renderMathInElement(n.getSlidesElement(),c),t.layout()};(t=>{let e=document.createElement("link");e.rel="stylesheet",e.href=t,document.head.appendChild(e)})(u),async function(t){for(const e of t)await a(e)}(m).then((()=>{t.isReady()?f():t.on("ready",f.bind(this))}))}}},MathJax2:t,MathJax3:()=>{let t,e={tex:{inlineMath:[["$","$"],["\\(","\\)"]]},options:{skipHtmlTags:["script","noscript","style","textarea","pre"]},startup:{ready:()=>{MathJax.startup.defaultReady(),MathJax.startup.promise.then((()=>{Reveal.layout()}))}}};return{id:"mathjax3",init:function(a){t=a;let n=t.getConfig().mathjax3||{},i={...e,...n};i.tex={...e.tex,...n.tex},i.options={...e.options,...n.options},i.startup={...e.startup,...n.startup};let s=i.mathjax||"https://cdn.jsdelivr.net/npm/mathjax@3/es5/tex-mml-chtml.js";i.mathjax=null,window.MathJax=i,function(t,e){let a=document.createElement("script");a.type="text/javascript",a.id="MathJax-script",a.src=t,a.async=!0,a.onload=()=>{"function"==typeof e&&(e.call(),e=null)},document.head.appendChild(a)}(s,(function(){Reveal.addEventListener("slidechanged",(function(t){MathJax.typeset()}))}))}}}});export{a as default};

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!function(t,e){"object"==typeof exports&&"undefined"!=typeof module?module.exports=e():"function"==typeof define&&define.amd?define(e):(t="undefined"!=typeof globalThis?globalThis:t||self).RevealMath=e()}(this,(function(){"use strict";const t=()=>{let t,e={messageStyle:"none",tex2jax:{inlineMath:[["$","$"],["\\(","\\)"]],skipTags:["script","noscript","style","textarea","pre"]},skipStartupTypeset:!0};return{id:"mathjax2",init:function(n){t=n;let a=t.getConfig().mathjax2||t.getConfig().math||{},i={...e,...a},s=(i.mathjax||"https://cdn.jsdelivr.net/npm/mathjax@2/MathJax.js")+"?config="+(i.config||"TeX-AMS_HTML-full");i.tex2jax={...e.tex2jax,...a.tex2jax},i.mathjax=i.config=null,function(t,e){let n=document.querySelector("head"),a=document.createElement("script");a.type="text/javascript",a.src=t;let i=()=>{"function"==typeof e&&(e.call(),e=null)};a.onload=i,a.onreadystatechange=()=>{"loaded"===this.readyState&&i()},n.appendChild(a)}(s,(function(){MathJax.Hub.Config(i),MathJax.Hub.Queue(["Typeset",MathJax.Hub,t.getRevealElement()]),MathJax.Hub.Queue(t.layout),t.on("slidechanged",(function(t){MathJax.Hub.Queue(["Typeset",MathJax.Hub,t.currentSlide])}))}))}}},e=t;return Plugin=Object.assign(e(),{KaTeX:()=>{let t,e={version:"latest",delimiters:[{left:"$$",right:"$$",display:!0},{left:"$",right:"$",display:!1},{left:"\\(",right:"\\)",display:!1},{left:"\\[",right:"\\]",display:!0}],ignoredTags:["script","noscript","style","textarea","pre"]};const n=t=>new Promise(((e,n)=>{const a=document.createElement("script");a.type="text/javascript",a.onload=e,a.onerror=n,a.src=t,document.head.append(a)}));return{id:"katex",init:function(a){t=a;let i=t.getConfig().katex||{},s={...e,...i};const{local:o,version:l,extensions:r,...c}=s;let d=s.local||"https://cdn.jsdelivr.net/npm/katex",u=s.local?"":"@"+s.version,p=d+u+"/dist/katex.min.css",h=d+u+"/dist/contrib/mhchem.min.js",x=d+u+"/dist/contrib/auto-render.min.js",m=[d+u+"/dist/katex.min.js"];s.extensions&&s.extensions.includes("mhchem")&&m.push(h),m.push(x);const f=()=>{renderMathInElement(a.getSlidesElement(),c),t.layout()};(t=>{let e=document.createElement("link");e.rel="stylesheet",e.href=t,document.head.appendChild(e)})(p),async function(t){for(const e of t)await n(e)}(m).then((()=>{t.isReady()?f():t.on("ready",f.bind(this))}))}}},MathJax2:t,MathJax3:()=>{let t,e={tex:{inlineMath:[["$","$"],["\\(","\\)"]]},options:{skipHtmlTags:["script","noscript","style","textarea","pre"]},startup:{ready:()=>{MathJax.startup.defaultReady(),MathJax.startup.promise.then((()=>{Reveal.layout()}))}}};return{id:"mathjax3",init:function(n){t=n;let a=t.getConfig().mathjax3||{},i={...e,...a};i.tex={...e.tex,...a.tex},i.options={...e.options,...a.options},i.startup={...e.startup,...a.startup};let s=i.mathjax||"https://cdn.jsdelivr.net/npm/mathjax@3/es5/tex-mml-chtml.js";i.mathjax=null,window.MathJax=i,function(t,e){let n=document.createElement("script");n.type="text/javascript",n.id="MathJax-script",n.src=t,n.async=!0,n.onload=()=>{"function"==typeof e&&(e.call(),e=null)},document.head.appendChild(n)}(s,(function(){Reveal.addEventListener("slidechanged",(function(t){MathJax.typeset()}))}))}}}})}));

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/**
* A plugin which enables rendering of math equations inside
* of reveal.js slides. Essentially a thin wrapper for MathJax.
*
* @author Hakim El Hattab
*/
export const MathJax2 = () => {
// The reveal.js instance this plugin is attached to
let deck;
let defaultOptions = {
messageStyle: 'none',
tex2jax: {
inlineMath: [ [ '$', '$' ], [ '\\(', '\\)' ] ],
skipTags: [ 'script', 'noscript', 'style', 'textarea', 'pre' ]
},
skipStartupTypeset: true
};
function loadScript( url, callback ) {
let head = document.querySelector( 'head' );
let script = document.createElement( 'script' );
script.type = 'text/javascript';
script.src = url;
// Wrapper for callback to make sure it only fires once
let finish = () => {
if( typeof callback === 'function' ) {
callback.call();
callback = null;
}
}
script.onload = finish;
// IE
script.onreadystatechange = () => {
if ( this.readyState === 'loaded' ) {
finish();
}
}
// Normal browsers
head.appendChild( script );
}
return {
id: 'mathjax2',
init: function( reveal ) {
deck = reveal;
let revealOptions = deck.getConfig().mathjax2 || deck.getConfig().math || {};
let options = { ...defaultOptions, ...revealOptions };
let mathjax = options.mathjax || 'https://cdn.jsdelivr.net/npm/mathjax@2/MathJax.js';
let config = options.config || 'TeX-AMS_HTML-full';
let url = mathjax + '?config=' + config;
options.tex2jax = { ...defaultOptions.tex2jax, ...revealOptions.tex2jax };
options.mathjax = options.config = null;
loadScript( url, function() {
MathJax.Hub.Config( options );
// Typeset followed by an immediate reveal.js layout since
// the typesetting process could affect slide height
MathJax.Hub.Queue( [ 'Typeset', MathJax.Hub, deck.getRevealElement() ] );
MathJax.Hub.Queue( deck.layout );
// Reprocess equations in slides when they turn visible
deck.on( 'slidechanged', function( event ) {
MathJax.Hub.Queue( [ 'Typeset', MathJax.Hub, event.currentSlide ] );
} );
} );
}
}
};

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/**
* A plugin which enables rendering of math equations inside
* of reveal.js slides. Essentially a thin wrapper for MathJax 3
*
* @author Hakim El Hattab
* @author Gerhard Burger
*/
export const MathJax3 = () => {
// The reveal.js instance this plugin is attached to
let deck;
let defaultOptions = {
tex: {
inlineMath: [ [ '$', '$' ], [ '\\(', '\\)' ] ]
},
options: {
skipHtmlTags: [ 'script', 'noscript', 'style', 'textarea', 'pre' ]
},
startup: {
ready: () => {
MathJax.startup.defaultReady();
MathJax.startup.promise.then(() => {
Reveal.layout();
});
}
}
};
function loadScript( url, callback ) {
let script = document.createElement( 'script' );
script.type = "text/javascript"
script.id = "MathJax-script"
script.src = url;
script.async = true
// Wrapper for callback to make sure it only fires once
script.onload = () => {
if (typeof callback === 'function') {
callback.call();
callback = null;
}
};
document.head.appendChild( script );
}
return {
id: 'mathjax3',
init: function(reveal) {
deck = reveal;
let revealOptions = deck.getConfig().mathjax3 || {};
let options = {...defaultOptions, ...revealOptions};
options.tex = {...defaultOptions.tex, ...revealOptions.tex}
options.options = {...defaultOptions.options, ...revealOptions.options}
options.startup = {...defaultOptions.startup, ...revealOptions.startup}
let url = options.mathjax || 'https://cdn.jsdelivr.net/npm/mathjax@3/es5/tex-mml-chtml.js';
options.mathjax = null;
window.MathJax = options;
loadScript( url, function() {
// Reprocess equations in slides when they turn visible
Reveal.addEventListener( 'slidechanged', function( event ) {
MathJax.typeset();
} );
} );
}
}
};

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import {KaTeX} from "./katex";
import {MathJax2} from "./mathjax2";
import {MathJax3} from "./mathjax3";
const defaultTypesetter = MathJax2;
/*!
* This plugin is a wrapper for the MathJax2,
* MathJax3 and KaTeX typesetter plugins.
*/
export default Plugin = Object.assign( defaultTypesetter(), {
KaTeX,
MathJax2,
MathJax3
} );

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import speakerViewHTML from './speaker-view.html'
import { marked } from 'marked';
/**
* Handles opening of and synchronization with the reveal.js
* notes window.
*
* Handshake process:
* 1. This window posts 'connect' to notes window
* - Includes URL of presentation to show
* 2. Notes window responds with 'connected' when it is available
* 3. This window proceeds to send the current presentation state
* to the notes window
*/
const Plugin = () => {
let connectInterval;
let speakerWindow = null;
let deck;
/**
* Opens a new speaker view window.
*/
function openSpeakerWindow() {
// If a window is already open, focus it
if( speakerWindow && !speakerWindow.closed ) {
speakerWindow.focus();
}
else {
speakerWindow = window.open( 'about:blank', 'reveal.js - Notes', 'width=1100,height=700' );
speakerWindow.marked = marked;
speakerWindow.document.write( speakerViewHTML );
if( !speakerWindow ) {
alert( 'Speaker view popup failed to open. Please make sure popups are allowed and reopen the speaker view.' );
return;
}
connect();
}
}
/**
* Reconnect with an existing speaker view window.
*/
function reconnectSpeakerWindow( reconnectWindow ) {
if( speakerWindow && !speakerWindow.closed ) {
speakerWindow.focus();
}
else {
speakerWindow = reconnectWindow;
window.addEventListener( 'message', onPostMessage );
onConnected();
}
}
/**
* Connect to the notes window through a postmessage handshake.
* Using postmessage enables us to work in situations where the
* origins differ, such as a presentation being opened from the
* file system.
*/
function connect() {
const presentationURL = deck.getConfig().url;
const url = typeof presentationURL === 'string' ? presentationURL :
window.location.protocol + '//' + window.location.host + window.location.pathname + window.location.search;
// Keep trying to connect until we get a 'connected' message back
connectInterval = setInterval( function() {
speakerWindow.postMessage( JSON.stringify( {
namespace: 'reveal-notes',
type: 'connect',
state: deck.getState(),
url
} ), '*' );
}, 500 );
window.addEventListener( 'message', onPostMessage );
}
/**
* Calls the specified Reveal.js method with the provided argument
* and then pushes the result to the notes frame.
*/
function callRevealApi( methodName, methodArguments, callId ) {
let result = deck[methodName].apply( deck, methodArguments );
speakerWindow.postMessage( JSON.stringify( {
namespace: 'reveal-notes',
type: 'return',
result,
callId
} ), '*' );
}
/**
* Posts the current slide data to the notes window.
*/
function post( event ) {
let slideElement = deck.getCurrentSlide(),
notesElements = slideElement.querySelectorAll( 'aside.notes' ),
fragmentElement = slideElement.querySelector( '.current-fragment' );
let messageData = {
namespace: 'reveal-notes',
type: 'state',
notes: '',
markdown: false,
whitespace: 'normal',
state: deck.getState()
};
// Look for notes defined in a slide attribute
if( slideElement.hasAttribute( 'data-notes' ) ) {
messageData.notes = slideElement.getAttribute( 'data-notes' );
messageData.whitespace = 'pre-wrap';
}
// Look for notes defined in a fragment
if( fragmentElement ) {
let fragmentNotes = fragmentElement.querySelector( 'aside.notes' );
if( fragmentNotes ) {
messageData.notes = fragmentNotes.innerHTML;
messageData.markdown = typeof fragmentNotes.getAttribute( 'data-markdown' ) === 'string';
// Ignore other slide notes
notesElements = null;
}
else if( fragmentElement.hasAttribute( 'data-notes' ) ) {
messageData.notes = fragmentElement.getAttribute( 'data-notes' );
messageData.whitespace = 'pre-wrap';
// In case there are slide notes
notesElements = null;
}
}
// Look for notes defined in an aside element
if( notesElements && notesElements.length ) {
// Ignore notes inside of fragments since those are shown
// individually when stepping through fragments
notesElements = Array.from( notesElements ).filter( notesElement => notesElement.closest( '.fragment' ) === null );
messageData.notes = notesElements.map( notesElement => notesElement.innerHTML ).join( '\n' );
messageData.markdown = notesElements[0] && typeof notesElements[0].getAttribute( 'data-markdown' ) === 'string';
}
speakerWindow.postMessage( JSON.stringify( messageData ), '*' );
}
/**
* Check if the given event is from the same origin as the
* current window.
*/
function isSameOriginEvent( event ) {
try {
return window.location.origin === event.source.location.origin;
}
catch ( error ) {
return false;
}
}
function onPostMessage( event ) {
// Only allow same-origin messages
// (added 12/5/22 as a XSS safeguard)
if( isSameOriginEvent( event ) ) {
let data = JSON.parse( event.data );
if( data && data.namespace === 'reveal-notes' && data.type === 'connected' ) {
clearInterval( connectInterval );
onConnected();
}
else if( data && data.namespace === 'reveal-notes' && data.type === 'call' ) {
callRevealApi( data.methodName, data.arguments, data.callId );
}
}
}
/**
* Called once we have established a connection to the notes
* window.
*/
function onConnected() {
// Monitor events that trigger a change in state
deck.on( 'slidechanged', post );
deck.on( 'fragmentshown', post );
deck.on( 'fragmenthidden', post );
deck.on( 'overviewhidden', post );
deck.on( 'overviewshown', post );
deck.on( 'paused', post );
deck.on( 'resumed', post );
// Post the initial state
post();
}
return {
id: 'notes',
init: function( reveal ) {
deck = reveal;
if( !/receiver/i.test( window.location.search ) ) {
// If the there's a 'notes' query set, open directly
if( window.location.search.match( /(\?|\&)notes/gi ) !== null ) {
openSpeakerWindow();
}
else {
// Keep listening for speaker view hearbeats. If we receive a
// heartbeat from an orphaned window, reconnect it. This ensures
// that we remain connected to the notes even if the presentation
// is reloaded.
window.addEventListener( 'message', event => {
if( !speakerWindow && typeof event.data === 'string' ) {
let data;
try {
data = JSON.parse( event.data );
}
catch( error ) {}
if( data && data.namespace === 'reveal-notes' && data.type === 'heartbeat' ) {
reconnectSpeakerWindow( event.source );
}
}
});
}
// Open the notes when the 's' key is hit
deck.addKeyBinding({keyCode: 83, key: 'S', description: 'Speaker notes view'}, function() {
openSpeakerWindow();
} );
}
},
open: openSpeakerWindow
};
};
export default Plugin;

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<!--
NOTE: You need to build the notes plugin after making changes to this file.
-->
<html lang="en">
<head>
<meta charset="utf-8">
<title>reveal.js - Speaker View</title>
<style>
body {
font-family: Helvetica;
font-size: 18px;
}
#current-slide,
#upcoming-slide,
#speaker-controls {
padding: 6px;
box-sizing: border-box;
-moz-box-sizing: border-box;
}
#current-slide iframe,
#upcoming-slide iframe {
width: 100%;
height: 100%;
border: 1px solid #ddd;
}
#current-slide .label,
#upcoming-slide .label {
position: absolute;
top: 10px;
left: 10px;
z-index: 2;
}
#connection-status {
position: absolute;
top: 0;
left: 0;
width: 100%;
height: 100%;
z-index: 20;
padding: 30% 20% 20% 20%;
font-size: 18px;
color: #222;
background: #fff;
text-align: center;
box-sizing: border-box;
line-height: 1.4;
}
.overlay-element {
height: 34px;
line-height: 34px;
padding: 0 10px;
text-shadow: none;
background: rgba( 220, 220, 220, 0.8 );
color: #222;
font-size: 14px;
}
.overlay-element.interactive:hover {
background: rgba( 220, 220, 220, 1 );
}
#current-slide {
position: absolute;
width: 60%;
height: 100%;
top: 0;
left: 0;
padding-right: 0;
}
#upcoming-slide {
position: absolute;
width: 40%;
height: 40%;
right: 0;
top: 0;
}
/* Speaker controls */
#speaker-controls {
position: absolute;
top: 40%;
right: 0;
width: 40%;
height: 60%;
overflow: auto;
font-size: 18px;
}
.speaker-controls-time.hidden,
.speaker-controls-notes.hidden {
display: none;
}
.speaker-controls-time .label,
.speaker-controls-pace .label,
.speaker-controls-notes .label {
text-transform: uppercase;
font-weight: normal;
font-size: 0.66em;
color: #666;
margin: 0;
}
.speaker-controls-time, .speaker-controls-pace {
border-bottom: 1px solid rgba( 200, 200, 200, 0.5 );
margin-bottom: 10px;
padding: 10px 16px;
padding-bottom: 20px;
cursor: pointer;
}
.speaker-controls-time .reset-button {
opacity: 0;
float: right;
color: #666;
text-decoration: none;
}
.speaker-controls-time:hover .reset-button {
opacity: 1;
}
.speaker-controls-time .timer,
.speaker-controls-time .clock {
width: 50%;
}
.speaker-controls-time .timer,
.speaker-controls-time .clock,
.speaker-controls-time .pacing .hours-value,
.speaker-controls-time .pacing .minutes-value,
.speaker-controls-time .pacing .seconds-value {
font-size: 1.9em;
}
.speaker-controls-time .timer {
float: left;
}
.speaker-controls-time .clock {
float: right;
text-align: right;
}
.speaker-controls-time span.mute {
opacity: 0.3;
}
.speaker-controls-time .pacing-title {
margin-top: 5px;
}
.speaker-controls-time .pacing.ahead {
color: blue;
}
.speaker-controls-time .pacing.on-track {
color: green;
}
.speaker-controls-time .pacing.behind {
color: red;
}
.speaker-controls-notes {
padding: 10px 16px;
}
.speaker-controls-notes .value {
margin-top: 5px;
line-height: 1.4;
font-size: 1.2em;
}
/* Layout selector */
#speaker-layout {
position: absolute;
top: 10px;
right: 10px;
color: #222;
z-index: 10;
}
#speaker-layout select {
position: absolute;
width: 100%;
height: 100%;
top: 0;
left: 0;
border: 0;
box-shadow: 0;
cursor: pointer;
opacity: 0;
font-size: 1em;
background-color: transparent;
-moz-appearance: none;
-webkit-appearance: none;
-webkit-tap-highlight-color: rgba(0, 0, 0, 0);
}
#speaker-layout select:focus {
outline: none;
box-shadow: none;
}
.clear {
clear: both;
}
/* Speaker layout: Wide */
body[data-speaker-layout="wide"] #current-slide,
body[data-speaker-layout="wide"] #upcoming-slide {
width: 50%;
height: 45%;
padding: 6px;
}
body[data-speaker-layout="wide"] #current-slide {
top: 0;
left: 0;
}
body[data-speaker-layout="wide"] #upcoming-slide {
top: 0;
left: 50%;
}
body[data-speaker-layout="wide"] #speaker-controls {
top: 45%;
left: 0;
width: 100%;
height: 50%;
font-size: 1.25em;
}
/* Speaker layout: Tall */
body[data-speaker-layout="tall"] #current-slide,
body[data-speaker-layout="tall"] #upcoming-slide {
width: 45%;
height: 50%;
padding: 6px;
}
body[data-speaker-layout="tall"] #current-slide {
top: 0;
left: 0;
}
body[data-speaker-layout="tall"] #upcoming-slide {
top: 50%;
left: 0;
}
body[data-speaker-layout="tall"] #speaker-controls {
padding-top: 40px;
top: 0;
left: 45%;
width: 55%;
height: 100%;
font-size: 1.25em;
}
/* Speaker layout: Notes only */
body[data-speaker-layout="notes-only"] #current-slide,
body[data-speaker-layout="notes-only"] #upcoming-slide {
display: none;
}
body[data-speaker-layout="notes-only"] #speaker-controls {
padding-top: 40px;
top: 0;
left: 0;
width: 100%;
height: 100%;
font-size: 1.25em;
}
@media screen and (max-width: 1080px) {
body[data-speaker-layout="default"] #speaker-controls {
font-size: 16px;
}
}
@media screen and (max-width: 900px) {
body[data-speaker-layout="default"] #speaker-controls {
font-size: 14px;
}
}
@media screen and (max-width: 800px) {
body[data-speaker-layout="default"] #speaker-controls {
font-size: 12px;
}
}
</style>
</head>
<body>
<div id="connection-status">Loading speaker view...</div>
<div id="current-slide"></div>
<div id="upcoming-slide"><span class="overlay-element label">Upcoming</span></div>
<div id="speaker-controls">
<div class="speaker-controls-time">
<h4 class="label">Time <span class="reset-button">Click to Reset</span></h4>
<div class="clock">
<span class="clock-value">0:00 AM</span>
</div>
<div class="timer">
<span class="hours-value">00</span><span class="minutes-value">:00</span><span class="seconds-value">:00</span>
</div>
<div class="clear"></div>
<h4 class="label pacing-title" style="display: none">Pacing – Time to finish current slide</h4>
<div class="pacing" style="display: none">
<span class="hours-value">00</span><span class="minutes-value">:00</span><span class="seconds-value">:00</span>
</div>
</div>
<div class="speaker-controls-notes hidden">
<h4 class="label">Notes</h4>
<div class="value"></div>
</div>
</div>
<div id="speaker-layout" class="overlay-element interactive">
<span class="speaker-layout-label"></span>
<select class="speaker-layout-dropdown"></select>
</div>
<script>
(function() {
var notes,
notesValue,
currentState,
currentSlide,
upcomingSlide,
layoutLabel,
layoutDropdown,
pendingCalls = {},
lastRevealApiCallId = 0,
connected = false
var connectionStatus = document.querySelector( '#connection-status' );
var SPEAKER_LAYOUTS = {
'default': 'Default',
'wide': 'Wide',
'tall': 'Tall',
'notes-only': 'Notes only'
};
setupLayout();
let openerOrigin;
try {
openerOrigin = window.opener.location.origin;
}
catch ( error ) { console.warn( error ) }
// In order to prevent XSS, the speaker view will only run if its
// opener has the same origin as itself
if( window.location.origin !== openerOrigin ) {
connectionStatus.innerHTML = 'Cross origin error.<br>The speaker window can only be opened from the same origin.';
return;
}
var connectionTimeout = setTimeout( function() {
connectionStatus.innerHTML = 'Error connecting to main window.<br>Please try closing and reopening the speaker view.';
}, 5000 );
window.addEventListener( 'message', function( event ) {
clearTimeout( connectionTimeout );
connectionStatus.style.display = 'none';
var data = JSON.parse( event.data );
// The overview mode is only useful to the reveal.js instance
// where navigation occurs so we don't sync it
if( data.state ) delete data.state.overview;
// Messages sent by the notes plugin inside of the main window
if( data && data.namespace === 'reveal-notes' ) {
if( data.type === 'connect' ) {
handleConnectMessage( data );
}
else if( data.type === 'state' ) {
handleStateMessage( data );
}
else if( data.type === 'return' ) {
pendingCalls[data.callId](data.result);
delete pendingCalls[data.callId];
}
}
// Messages sent by the reveal.js inside of the current slide preview
else if( data && data.namespace === 'reveal' ) {
if( /ready/.test( data.eventName ) ) {
// Send a message back to notify that the handshake is complete
window.opener.postMessage( JSON.stringify({ namespace: 'reveal-notes', type: 'connected'} ), '*' );
}
else if( /slidechanged|fragmentshown|fragmenthidden|paused|resumed/.test( data.eventName ) && currentState !== JSON.stringify( data.state ) ) {
dispatchStateToMainWindow( data.state );
}
}
} );
/**
* Updates the presentation in the main window to match the state
* of the presentation in the notes window.
*/
const dispatchStateToMainWindow = debounce(( state ) => {
window.opener.postMessage( JSON.stringify({ method: 'setState', args: [ state ]} ), '*' );
}, 500);
/**
* Asynchronously calls the Reveal.js API of the main frame.
*/
function callRevealApi( methodName, methodArguments, callback ) {
var callId = ++lastRevealApiCallId;
pendingCalls[callId] = callback;
window.opener.postMessage( JSON.stringify( {
namespace: 'reveal-notes',
type: 'call',
callId: callId,
methodName: methodName,
arguments: methodArguments
} ), '*' );
}
/**
* Called when the main window is trying to establish a
* connection.
*/
function handleConnectMessage( data ) {
if( connected === false ) {
connected = true;
setupIframes( data );
setupKeyboard();
setupNotes();
setupTimer();
setupHeartbeat();
}
}
/**
* Called when the main window sends an updated state.
*/
function handleStateMessage( data ) {
// Store the most recently set state to avoid circular loops
// applying the same state
currentState = JSON.stringify( data.state );
// No need for updating the notes in case of fragment changes
if ( data.notes ) {
notes.classList.remove( 'hidden' );
notesValue.style.whiteSpace = data.whitespace;
if( data.markdown ) {
notesValue.innerHTML = marked( data.notes );
}
else {
notesValue.innerHTML = data.notes;
}
}
else {
notes.classList.add( 'hidden' );
}
// Update the note slides
currentSlide.contentWindow.postMessage( JSON.stringify({ method: 'setState', args: [ data.state ] }), '*' );
upcomingSlide.contentWindow.postMessage( JSON.stringify({ method: 'setState', args: [ data.state ] }), '*' );
upcomingSlide.contentWindow.postMessage( JSON.stringify({ method: 'next' }), '*' );
}
// Limit to max one state update per X ms
handleStateMessage = debounce( handleStateMessage, 200 );
/**
* Forward keyboard events to the current slide window.
* This enables keyboard events to work even if focus
* isn't set on the current slide iframe.
*
* Block F5 default handling, it reloads and disconnects
* the speaker notes window.
*/
function setupKeyboard() {
document.addEventListener( 'keydown', function( event ) {
if( event.keyCode === 116 || ( event.metaKey && event.keyCode === 82 ) ) {
event.preventDefault();
return false;
}
currentSlide.contentWindow.postMessage( JSON.stringify({ method: 'triggerKey', args: [ event.keyCode ] }), '*' );
} );
}
/**
* Creates the preview iframes.
*/
function setupIframes( data ) {
var params = [
'receiver',
'progress=false',
'history=false',
'transition=none',
'autoSlide=0',
'backgroundTransition=none'
].join( '&' );
var urlSeparator = /\?/.test(data.url) ? '&' : '?';
var hash = '#/' + data.state.indexh + '/' + data.state.indexv;
var currentURL = data.url + urlSeparator + params + '&scrollActivationWidth=false&postMessageEvents=true' + hash;
var upcomingURL = data.url + urlSeparator + params + '&scrollActivationWidth=false&controls=false' + hash;
currentSlide = document.createElement( 'iframe' );
currentSlide.setAttribute( 'width', 1280 );
currentSlide.setAttribute( 'height', 1024 );
currentSlide.setAttribute( 'src', currentURL );
document.querySelector( '#current-slide' ).appendChild( currentSlide );
upcomingSlide = document.createElement( 'iframe' );
upcomingSlide.setAttribute( 'width', 640 );
upcomingSlide.setAttribute( 'height', 512 );
upcomingSlide.setAttribute( 'src', upcomingURL );
document.querySelector( '#upcoming-slide' ).appendChild( upcomingSlide );
}
/**
* Setup the notes UI.
*/
function setupNotes() {
notes = document.querySelector( '.speaker-controls-notes' );
notesValue = document.querySelector( '.speaker-controls-notes .value' );
}
/**
* We send out a heartbeat at all times to ensure we can
* reconnect with the main presentation window after reloads.
*/
function setupHeartbeat() {
setInterval( () => {
window.opener.postMessage( JSON.stringify({ namespace: 'reveal-notes', type: 'heartbeat'} ), '*' );
}, 1000 );
}
function getTimings( callback ) {
callRevealApi( 'getSlidesAttributes', [], function ( slideAttributes ) {
callRevealApi( 'getConfig', [], function ( config ) {
var totalTime = config.totalTime;
var minTimePerSlide = config.minimumTimePerSlide || 0;
var defaultTiming = config.defaultTiming;
if ((defaultTiming == null) && (totalTime == null)) {
callback(null);
return;
}
// Setting totalTime overrides defaultTiming
if (totalTime) {
defaultTiming = 0;
}
var timings = [];
for ( var i in slideAttributes ) {
var slide = slideAttributes[ i ];
var timing = defaultTiming;
if( slide.hasOwnProperty( 'data-timing' )) {
var t = slide[ 'data-timing' ];
timing = parseInt(t);
if( isNaN(timing) ) {
console.warn("Could not parse timing '" + t + "' of slide " + i + "; using default of " + defaultTiming);
timing = defaultTiming;
}
}
timings.push(timing);
}
if ( totalTime ) {
// After we've allocated time to individual slides, we summarize it and
// subtract it from the total time
var remainingTime = totalTime - timings.reduce( function(a, b) { return a + b; }, 0 );
// The remaining time is divided by the number of slides that have 0 seconds
// allocated at the moment, giving the average time-per-slide on the remaining slides
var remainingSlides = (timings.filter( function(x) { return x == 0 }) ).length
var timePerSlide = Math.round( remainingTime / remainingSlides, 0 )
// And now we replace every zero-value timing with that average
timings = timings.map( function(x) { return (x==0 ? timePerSlide : x) } );
}
var slidesUnderMinimum = timings.filter( function(x) { return (x < minTimePerSlide) } ).length
if ( slidesUnderMinimum ) {
message = "The pacing time for " + slidesUnderMinimum + " slide(s) is under the configured minimum of " + minTimePerSlide + " seconds. Check the data-timing attribute on individual slides, or consider increasing the totalTime or minimumTimePerSlide configuration options (or removing some slides).";
alert(message);
}
callback( timings );
} );
} );
}
/**
* Return the number of seconds allocated for presenting
* all slides up to and including this one.
*/
function getTimeAllocated( timings, callback ) {
callRevealApi( 'getSlidePastCount', [], function ( currentSlide ) {
var allocated = 0;
for (var i in timings.slice(0, currentSlide + 1)) {
allocated += timings[i];
}
callback( allocated );
} );
}
/**
* Create the timer and clock and start updating them
* at an interval.
*/
function setupTimer() {
var start = new Date(),
timeEl = document.querySelector( '.speaker-controls-time' ),
clockEl = timeEl.querySelector( '.clock-value' ),
hoursEl = timeEl.querySelector( '.hours-value' ),
minutesEl = timeEl.querySelector( '.minutes-value' ),
secondsEl = timeEl.querySelector( '.seconds-value' ),
pacingTitleEl = timeEl.querySelector( '.pacing-title' ),
pacingEl = timeEl.querySelector( '.pacing' ),
pacingHoursEl = pacingEl.querySelector( '.hours-value' ),
pacingMinutesEl = pacingEl.querySelector( '.minutes-value' ),
pacingSecondsEl = pacingEl.querySelector( '.seconds-value' );
var timings = null;
getTimings( function ( _timings ) {
timings = _timings;
if (_timings !== null) {
pacingTitleEl.style.removeProperty('display');
pacingEl.style.removeProperty('display');
}
// Update once directly
_updateTimer();
// Then update every second
setInterval( _updateTimer, 1000 );
} );
function _resetTimer() {
if (timings == null) {
start = new Date();
_updateTimer();
}
else {
// Reset timer to beginning of current slide
getTimeAllocated( timings, function ( slideEndTimingSeconds ) {
var slideEndTiming = slideEndTimingSeconds * 1000;
callRevealApi( 'getSlidePastCount', [], function ( currentSlide ) {
var currentSlideTiming = timings[currentSlide] * 1000;
var previousSlidesTiming = slideEndTiming - currentSlideTiming;
var now = new Date();
start = new Date(now.getTime() - previousSlidesTiming);
_updateTimer();
} );
} );
}
}
timeEl.addEventListener( 'click', function() {
_resetTimer();
return false;
} );
function _displayTime( hrEl, minEl, secEl, time) {
var sign = Math.sign(time) == -1 ? "-" : "";
time = Math.abs(Math.round(time / 1000));
var seconds = time % 60;
var minutes = Math.floor( time / 60 ) % 60 ;
var hours = Math.floor( time / ( 60 * 60 )) ;
hrEl.innerHTML = sign + zeroPadInteger( hours );
if (hours == 0) {
hrEl.classList.add( 'mute' );
}
else {
hrEl.classList.remove( 'mute' );
}
minEl.innerHTML = ':' + zeroPadInteger( minutes );
if (hours == 0 && minutes == 0) {
minEl.classList.add( 'mute' );
}
else {
minEl.classList.remove( 'mute' );
}
secEl.innerHTML = ':' + zeroPadInteger( seconds );
}
function _updateTimer() {
var diff, hours, minutes, seconds,
now = new Date();
diff = now.getTime() - start.getTime();
clockEl.innerHTML = now.toLocaleTimeString( 'en-US', { hour12: true, hour: '2-digit', minute:'2-digit' } );
_displayTime( hoursEl, minutesEl, secondsEl, diff );
if (timings !== null) {
_updatePacing(diff);
}
}
function _updatePacing(diff) {
getTimeAllocated( timings, function ( slideEndTimingSeconds ) {
var slideEndTiming = slideEndTimingSeconds * 1000;
callRevealApi( 'getSlidePastCount', [], function ( currentSlide ) {
var currentSlideTiming = timings[currentSlide] * 1000;
var timeLeftCurrentSlide = slideEndTiming - diff;
if (timeLeftCurrentSlide < 0) {
pacingEl.className = 'pacing behind';
}
else if (timeLeftCurrentSlide < currentSlideTiming) {
pacingEl.className = 'pacing on-track';
}
else {
pacingEl.className = 'pacing ahead';
}
_displayTime( pacingHoursEl, pacingMinutesEl, pacingSecondsEl, timeLeftCurrentSlide );
} );
} );
}
}
/**
* Sets up the speaker view layout and layout selector.
*/
function setupLayout() {
layoutDropdown = document.querySelector( '.speaker-layout-dropdown' );
layoutLabel = document.querySelector( '.speaker-layout-label' );
// Render the list of available layouts
for( var id in SPEAKER_LAYOUTS ) {
var option = document.createElement( 'option' );
option.setAttribute( 'value', id );
option.textContent = SPEAKER_LAYOUTS[ id ];
layoutDropdown.appendChild( option );
}
// Monitor the dropdown for changes
layoutDropdown.addEventListener( 'change', function( event ) {
setLayout( layoutDropdown.value );
}, false );
// Restore any currently persisted layout
setLayout( getLayout() );
}
/**
* Sets a new speaker view layout. The layout is persisted
* in local storage.
*/
function setLayout( value ) {
var title = SPEAKER_LAYOUTS[ value ];
layoutLabel.innerHTML = 'Layout' + ( title ? ( ': ' + title ) : '' );
layoutDropdown.value = value;
document.body.setAttribute( 'data-speaker-layout', value );
// Persist locally
if( supportsLocalStorage() ) {
window.localStorage.setItem( 'reveal-speaker-layout', value );
}
}
/**
* Returns the ID of the most recently set speaker layout
* or our default layout if none has been set.
*/
function getLayout() {
if( supportsLocalStorage() ) {
var layout = window.localStorage.getItem( 'reveal-speaker-layout' );
if( layout ) {
return layout;
}
}
// Default to the first record in the layouts hash
for( var id in SPEAKER_LAYOUTS ) {
return id;
}
}
function supportsLocalStorage() {
try {
localStorage.setItem('test', 'test');
localStorage.removeItem('test');
return true;
}
catch( e ) {
return false;
}
}
function zeroPadInteger( num ) {
var str = '00' + parseInt( num );
return str.substring( str.length - 2 );
}
/**
* Limits the frequency at which a function can be called.
*/
function debounce( fn, ms ) {
var lastTime = 0,
timeout;
return function() {
var args = arguments;
var context = this;
clearTimeout( timeout );
var timeSinceLastCall = Date.now() - lastTime;
if( timeSinceLastCall > ms ) {
fn.apply( context, args );
lastTime = Date.now();
}
else {
timeout = setTimeout( function() {
fn.apply( context, args );
lastTime = Date.now();
}, ms - timeSinceLastCall );
}
}
}
})();
</script>
</body>
</html>

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plugin/search/plugin.js Normal file
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/*!
* Handles finding a text string anywhere in the slides and showing the next occurrence to the user
* by navigatating to that slide and highlighting it.
*
* @author Jon Snyder <snyder.jon@gmail.com>, February 2013
*/
const Plugin = () => {
// The reveal.js instance this plugin is attached to
let deck;
let searchElement;
let searchButton;
let searchInput;
let matchedSlides;
let currentMatchedIndex;
let searchboxDirty;
let hilitor;
function render() {
searchElement = document.createElement( 'div' );
searchElement.classList.add( 'searchbox' );
searchElement.style.position = 'absolute';
searchElement.style.top = '10px';
searchElement.style.right = '10px';
searchElement.style.zIndex = 10;
//embedded base64 search icon Designed by Sketchdock - http://www.sketchdock.com/:
searchElement.innerHTML = `<input type="search" class="searchinput" placeholder="Search..." style="vertical-align: top;"/>
</span>`;
searchInput = searchElement.querySelector( '.searchinput' );
searchInput.style.width = '240px';
searchInput.style.fontSize = '14px';
searchInput.style.padding = '4px 6px';
searchInput.style.color = '#000';
searchInput.style.background = '#fff';
searchInput.style.borderRadius = '2px';
searchInput.style.border = '0';
searchInput.style.outline = '0';
searchInput.style.boxShadow = '0 2px 18px rgba(0, 0, 0, 0.2)';
searchInput.style['-webkit-appearance'] = 'none';
deck.getRevealElement().appendChild( searchElement );
// searchButton.addEventListener( 'click', function(event) {
// doSearch();
// }, false );
searchInput.addEventListener( 'keyup', function( event ) {
switch (event.keyCode) {
case 13:
event.preventDefault();
doSearch();
searchboxDirty = false;
break;
default:
searchboxDirty = true;
}
}, false );
closeSearch();
}
function openSearch() {
if( !searchElement ) render();
searchElement.style.display = 'inline';
searchInput.focus();
searchInput.select();
}
function closeSearch() {
if( !searchElement ) render();
searchElement.style.display = 'none';
if(hilitor) hilitor.remove();
}
function toggleSearch() {
if( !searchElement ) render();
if (searchElement.style.display !== 'inline') {
openSearch();
}
else {
closeSearch();
}
}
function doSearch() {
//if there's been a change in the search term, perform a new search:
if (searchboxDirty) {
var searchstring = searchInput.value;
if (searchstring === '') {
if(hilitor) hilitor.remove();
matchedSlides = null;
}
else {
//find the keyword amongst the slides
hilitor = new Hilitor("slidecontent");
matchedSlides = hilitor.apply(searchstring);
currentMatchedIndex = 0;
}
}
if (matchedSlides) {
//navigate to the next slide that has the keyword, wrapping to the first if necessary
if (matchedSlides.length && (matchedSlides.length <= currentMatchedIndex)) {
currentMatchedIndex = 0;
}
if (matchedSlides.length > currentMatchedIndex) {
deck.slide(matchedSlides[currentMatchedIndex].h, matchedSlides[currentMatchedIndex].v);
currentMatchedIndex++;
}
}
}
// Original JavaScript code by Chirp Internet: www.chirp.com.au
// Please acknowledge use of this code by including this header.
// 2/2013 jon: modified regex to display any match, not restricted to word boundaries.
function Hilitor(id, tag) {
var targetNode = document.getElementById(id) || document.body;
var hiliteTag = tag || "EM";
var skipTags = new RegExp("^(?:" + hiliteTag + "|SCRIPT|FORM)$");
var colors = ["#ff6", "#a0ffff", "#9f9", "#f99", "#f6f"];
var wordColor = [];
var colorIdx = 0;
var matchRegex = "";
var matchingSlides = [];
this.setRegex = function(input)
{
input = input.trim();
matchRegex = new RegExp("(" + input + ")","i");
}
this.getRegex = function()
{
return matchRegex.toString().replace(/^\/\\b\(|\)\\b\/i$/g, "").replace(/\|/g, " ");
}
// recursively apply word highlighting
this.hiliteWords = function(node)
{
if(node == undefined || !node) return;
if(!matchRegex) return;
if(skipTags.test(node.nodeName)) return;
if(node.hasChildNodes()) {
for(var i=0; i < node.childNodes.length; i++)
this.hiliteWords(node.childNodes[i]);
}
if(node.nodeType == 3) { // NODE_TEXT
var nv, regs;
if((nv = node.nodeValue) && (regs = matchRegex.exec(nv))) {
//find the slide's section element and save it in our list of matching slides
var secnode = node;
while (secnode != null && secnode.nodeName != 'SECTION') {
secnode = secnode.parentNode;
}
var slideIndex = deck.getIndices(secnode);
var slidelen = matchingSlides.length;
var alreadyAdded = false;
for (var i=0; i < slidelen; i++) {
if ( (matchingSlides[i].h === slideIndex.h) && (matchingSlides[i].v === slideIndex.v) ) {
alreadyAdded = true;
}
}
if (! alreadyAdded) {
matchingSlides.push(slideIndex);
}
if(!wordColor[regs[0].toLowerCase()]) {
wordColor[regs[0].toLowerCase()] = colors[colorIdx++ % colors.length];
}
var match = document.createElement(hiliteTag);
match.appendChild(document.createTextNode(regs[0]));
match.style.backgroundColor = wordColor[regs[0].toLowerCase()];
match.style.fontStyle = "inherit";
match.style.color = "#000";
var after = node.splitText(regs.index);
after.nodeValue = after.nodeValue.substring(regs[0].length);
node.parentNode.insertBefore(match, after);
}
}
};
// remove highlighting
this.remove = function()
{
var arr = document.getElementsByTagName(hiliteTag);
var el;
while(arr.length && (el = arr[0])) {
el.parentNode.replaceChild(el.firstChild, el);
}
};
// start highlighting at target node
this.apply = function(input)
{
if(input == undefined || !input) return;
this.remove();
this.setRegex(input);
this.hiliteWords(targetNode);
return matchingSlides;
};
}
return {
id: 'search',
init: reveal => {
deck = reveal;
deck.registerKeyboardShortcut( 'CTRL + Shift + F', 'Search' );
document.addEventListener( 'keydown', function( event ) {
if( event.key == "F" && (event.ctrlKey || event.metaKey) ) { //Control+Shift+f
event.preventDefault();
toggleSearch();
}
}, false );
},
open: openSearch
}
};
export default Plugin;

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plugin/search/search.esm.js Normal file
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/*!
* Handles finding a text string anywhere in the slides and showing the next occurrence to the user
* by navigatating to that slide and highlighting it.
*
* @author Jon Snyder <snyder.jon@gmail.com>, February 2013
*/
const e=()=>{let e,t,n,l,i,o,r;function s(){t=document.createElement("div"),t.classList.add("searchbox"),t.style.position="absolute",t.style.top="10px",t.style.right="10px",t.style.zIndex=10,t.innerHTML='<input type="search" class="searchinput" placeholder="Search..." style="vertical-align: top;"/>\n\t\t</span>',n=t.querySelector(".searchinput"),n.style.width="240px",n.style.fontSize="14px",n.style.padding="4px 6px",n.style.color="#000",n.style.background="#fff",n.style.borderRadius="2px",n.style.border="0",n.style.outline="0",n.style.boxShadow="0 2px 18px rgba(0, 0, 0, 0.2)",n.style["-webkit-appearance"]="none",e.getRevealElement().appendChild(t),n.addEventListener("keyup",(function(t){if(13===t.keyCode)t.preventDefault(),function(){if(o){var t=n.value;""===t?(r&&r.remove(),l=null):(r=new c("slidecontent"),l=r.apply(t),i=0)}l&&(l.length&&l.length<=i&&(i=0),l.length>i&&(e.slide(l[i].h,l[i].v),i++))}(),o=!1;else o=!0}),!1),d()}function a(){t||s(),t.style.display="inline",n.focus(),n.select()}function d(){t||s(),t.style.display="none",r&&r.remove()}function c(t,n){var l=document.getElementById(t)||document.body,i=n||"EM",o=new RegExp("^(?:"+i+"|SCRIPT|FORM)$"),r=["#ff6","#a0ffff","#9f9","#f99","#f6f"],s=[],a=0,d="",c=[];this.setRegex=function(e){e=e.trim(),d=new RegExp("("+e+")","i")},this.getRegex=function(){return d.toString().replace(/^\/\\b\(|\)\\b\/i$/g,"").replace(/\|/g," ")},this.hiliteWords=function(t){if(null!=t&&t&&d&&!o.test(t.nodeName)){if(t.hasChildNodes())for(var n=0;n<t.childNodes.length;n++)this.hiliteWords(t.childNodes[n]);var l,p;if(3==t.nodeType)if((l=t.nodeValue)&&(p=d.exec(l))){for(var u=t;null!=u&&"SECTION"!=u.nodeName;)u=u.parentNode;var h=e.getIndices(u),f=c.length,y=!1;for(n=0;n<f;n++)c[n].h===h.h&&c[n].v===h.v&&(y=!0);y||c.push(h),s[p[0].toLowerCase()]||(s[p[0].toLowerCase()]=r[a++%r.length]);var g=document.createElement(i);g.appendChild(document.createTextNode(p[0])),g.style.backgroundColor=s[p[0].toLowerCase()],g.style.fontStyle="inherit",g.style.color="#000";var v=t.splitText(p.index);v.nodeValue=v.nodeValue.substring(p[0].length),t.parentNode.insertBefore(g,v)}}},this.remove=function(){for(var e,t=document.getElementsByTagName(i);t.length&&(e=t[0]);)e.parentNode.replaceChild(e.firstChild,e)},this.apply=function(e){if(null!=e&&e)return this.remove(),this.setRegex(e),this.hiliteWords(l),c}}return{id:"search",init:n=>{e=n,e.registerKeyboardShortcut("CTRL + Shift + F","Search"),document.addEventListener("keydown",(function(e){"F"==e.key&&(e.ctrlKey||e.metaKey)&&(e.preventDefault(),t||s(),"inline"!==t.style.display?a():d())}),!1)},open:a}};export{e as default};

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!function(e,t){"object"==typeof exports&&"undefined"!=typeof module?module.exports=t():"function"==typeof define&&define.amd?define(t):(e="undefined"!=typeof globalThis?globalThis:e||self).RevealSearch=t()}(this,(function(){"use strict";
/*!
* Handles finding a text string anywhere in the slides and showing the next occurrence to the user
* by navigatating to that slide and highlighting it.
*
* @author Jon Snyder <snyder.jon@gmail.com>, February 2013
*/return()=>{let e,t,n,i,o,l,r;function s(){t=document.createElement("div"),t.classList.add("searchbox"),t.style.position="absolute",t.style.top="10px",t.style.right="10px",t.style.zIndex=10,t.innerHTML='<input type="search" class="searchinput" placeholder="Search..." style="vertical-align: top;"/>\n\t\t</span>',n=t.querySelector(".searchinput"),n.style.width="240px",n.style.fontSize="14px",n.style.padding="4px 6px",n.style.color="#000",n.style.background="#fff",n.style.borderRadius="2px",n.style.border="0",n.style.outline="0",n.style.boxShadow="0 2px 18px rgba(0, 0, 0, 0.2)",n.style["-webkit-appearance"]="none",e.getRevealElement().appendChild(t),n.addEventListener("keyup",(function(t){if(13===t.keyCode)t.preventDefault(),function(){if(l){var t=n.value;""===t?(r&&r.remove(),i=null):(r=new c("slidecontent"),i=r.apply(t),o=0)}i&&(i.length&&i.length<=o&&(o=0),i.length>o&&(e.slide(i[o].h,i[o].v),o++))}(),l=!1;else l=!0}),!1),d()}function a(){t||s(),t.style.display="inline",n.focus(),n.select()}function d(){t||s(),t.style.display="none",r&&r.remove()}function c(t,n){var i=document.getElementById(t)||document.body,o=n||"EM",l=new RegExp("^(?:"+o+"|SCRIPT|FORM)$"),r=["#ff6","#a0ffff","#9f9","#f99","#f6f"],s=[],a=0,d="",c=[];this.setRegex=function(e){e=e.trim(),d=new RegExp("("+e+")","i")},this.getRegex=function(){return d.toString().replace(/^\/\\b\(|\)\\b\/i$/g,"").replace(/\|/g," ")},this.hiliteWords=function(t){if(null!=t&&t&&d&&!l.test(t.nodeName)){if(t.hasChildNodes())for(var n=0;n<t.childNodes.length;n++)this.hiliteWords(t.childNodes[n]);var i,f;if(3==t.nodeType)if((i=t.nodeValue)&&(f=d.exec(i))){for(var u=t;null!=u&&"SECTION"!=u.nodeName;)u=u.parentNode;var p=e.getIndices(u),h=c.length,y=!1;for(n=0;n<h;n++)c[n].h===p.h&&c[n].v===p.v&&(y=!0);y||c.push(p),s[f[0].toLowerCase()]||(s[f[0].toLowerCase()]=r[a++%r.length]);var g=document.createElement(o);g.appendChild(document.createTextNode(f[0])),g.style.backgroundColor=s[f[0].toLowerCase()],g.style.fontStyle="inherit",g.style.color="#000";var v=t.splitText(f.index);v.nodeValue=v.nodeValue.substring(f[0].length),t.parentNode.insertBefore(g,v)}}},this.remove=function(){for(var e,t=document.getElementsByTagName(o);t.length&&(e=t[0]);)e.parentNode.replaceChild(e.firstChild,e)},this.apply=function(e){if(null!=e&&e)return this.remove(),this.setRegex(e),this.hiliteWords(i),c}}return{id:"search",init:n=>{e=n,e.registerKeyboardShortcut("CTRL + Shift + F","Search"),document.addEventListener("keydown",(function(e){"F"==e.key&&(e.ctrlKey||e.metaKey)&&(e.preventDefault(),t||s(),"inline"!==t.style.display?a():d())}),!1)},open:a}}}));

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/*!
* reveal.js Zoom plugin
*/
const Plugin = {
id: 'zoom',
init: function( reveal ) {
reveal.getRevealElement().addEventListener( 'mousedown', function( event ) {
var defaultModifier = /Linux/.test( window.navigator.platform ) ? 'ctrl' : 'alt';
var modifier = ( reveal.getConfig().zoomKey ? reveal.getConfig().zoomKey : defaultModifier ) + 'Key';
var zoomLevel = ( reveal.getConfig().zoomLevel ? reveal.getConfig().zoomLevel : 2 );
if( event[ modifier ] && !reveal.isOverview() ) {
event.preventDefault();
zoom.to({
x: event.clientX,
y: event.clientY,
scale: zoomLevel,
pan: false
});
}
} );
},
destroy: () => {
zoom.reset();
}
};
export default () => Plugin;
/*!
* zoom.js 0.3 (modified for use with reveal.js)
* http://lab.hakim.se/zoom-js
* MIT licensed
*
* Copyright (C) 2011-2014 Hakim El Hattab, http://hakim.se
*/
var zoom = (function(){
// The current zoom level (scale)
var level = 1;
// The current mouse position, used for panning
var mouseX = 0,
mouseY = 0;
// Timeout before pan is activated
var panEngageTimeout = -1,
panUpdateInterval = -1;
// Check for transform support so that we can fallback otherwise
var supportsTransforms = 'transform' in document.body.style;
if( supportsTransforms ) {
// The easing that will be applied when we zoom in/out
document.body.style.transition = 'transform 0.8s ease';
}
// Zoom out if the user hits escape
document.addEventListener( 'keyup', function( event ) {
if( level !== 1 && event.keyCode === 27 ) {
zoom.out();
}
} );
// Monitor mouse movement for panning
document.addEventListener( 'mousemove', function( event ) {
if( level !== 1 ) {
mouseX = event.clientX;
mouseY = event.clientY;
}
} );
/**
* Applies the CSS required to zoom in, prefers the use of CSS3
* transforms but falls back on zoom for IE.
*
* @param {Object} rect
* @param {Number} scale
*/
function magnify( rect, scale ) {
var scrollOffset = getScrollOffset();
// Ensure a width/height is set
rect.width = rect.width || 1;
rect.height = rect.height || 1;
// Center the rect within the zoomed viewport
rect.x -= ( window.innerWidth - ( rect.width * scale ) ) / 2;
rect.y -= ( window.innerHeight - ( rect.height * scale ) ) / 2;
if( supportsTransforms ) {
// Reset
if( scale === 1 ) {
document.body.style.transform = '';
}
// Scale
else {
var origin = scrollOffset.x +'px '+ scrollOffset.y +'px',
transform = 'translate('+ -rect.x +'px,'+ -rect.y +'px) scale('+ scale +')';
document.body.style.transformOrigin = origin;
document.body.style.transform = transform;
}
}
else {
// Reset
if( scale === 1 ) {
document.body.style.position = '';
document.body.style.left = '';
document.body.style.top = '';
document.body.style.width = '';
document.body.style.height = '';
document.body.style.zoom = '';
}
// Scale
else {
document.body.style.position = 'relative';
document.body.style.left = ( - ( scrollOffset.x + rect.x ) / scale ) + 'px';
document.body.style.top = ( - ( scrollOffset.y + rect.y ) / scale ) + 'px';
document.body.style.width = ( scale * 100 ) + '%';
document.body.style.height = ( scale * 100 ) + '%';
document.body.style.zoom = scale;
}
}
level = scale;
if( document.documentElement.classList ) {
if( level !== 1 ) {
document.documentElement.classList.add( 'zoomed' );
}
else {
document.documentElement.classList.remove( 'zoomed' );
}
}
}
/**
* Pan the document when the mosue cursor approaches the edges
* of the window.
*/
function pan() {
var range = 0.12,
rangeX = window.innerWidth * range,
rangeY = window.innerHeight * range,
scrollOffset = getScrollOffset();
// Up
if( mouseY < rangeY ) {
window.scroll( scrollOffset.x, scrollOffset.y - ( 1 - ( mouseY / rangeY ) ) * ( 14 / level ) );
}
// Down
else if( mouseY > window.innerHeight - rangeY ) {
window.scroll( scrollOffset.x, scrollOffset.y + ( 1 - ( window.innerHeight - mouseY ) / rangeY ) * ( 14 / level ) );
}
// Left
if( mouseX < rangeX ) {
window.scroll( scrollOffset.x - ( 1 - ( mouseX / rangeX ) ) * ( 14 / level ), scrollOffset.y );
}
// Right
else if( mouseX > window.innerWidth - rangeX ) {
window.scroll( scrollOffset.x + ( 1 - ( window.innerWidth - mouseX ) / rangeX ) * ( 14 / level ), scrollOffset.y );
}
}
function getScrollOffset() {
return {
x: window.scrollX !== undefined ? window.scrollX : window.pageXOffset,
y: window.scrollY !== undefined ? window.scrollY : window.pageYOffset
}
}
return {
/**
* Zooms in on either a rectangle or HTML element.
*
* @param {Object} options
* - element: HTML element to zoom in on
* OR
* - x/y: coordinates in non-transformed space to zoom in on
* - width/height: the portion of the screen to zoom in on
* - scale: can be used instead of width/height to explicitly set scale
*/
to: function( options ) {
// Due to an implementation limitation we can't zoom in
// to another element without zooming out first
if( level !== 1 ) {
zoom.out();
}
else {
options.x = options.x || 0;
options.y = options.y || 0;
// If an element is set, that takes precedence
if( !!options.element ) {
// Space around the zoomed in element to leave on screen
var padding = 20;
var bounds = options.element.getBoundingClientRect();
options.x = bounds.left - padding;
options.y = bounds.top - padding;
options.width = bounds.width + ( padding * 2 );
options.height = bounds.height + ( padding * 2 );
}
// If width/height values are set, calculate scale from those values
if( options.width !== undefined && options.height !== undefined ) {
options.scale = Math.max( Math.min( window.innerWidth / options.width, window.innerHeight / options.height ), 1 );
}
if( options.scale > 1 ) {
options.x *= options.scale;
options.y *= options.scale;
magnify( options, options.scale );
if( options.pan !== false ) {
// Wait with engaging panning as it may conflict with the
// zoom transition
panEngageTimeout = setTimeout( function() {
panUpdateInterval = setInterval( pan, 1000 / 60 );
}, 800 );
}
}
}
},
/**
* Resets the document zoom state to its default.
*/
out: function() {
clearTimeout( panEngageTimeout );
clearInterval( panUpdateInterval );
magnify( { x: 0, y: 0 }, 1 );
level = 1;
},
// Alias
magnify: function( options ) { this.to( options ) },
reset: function() { this.out() },
zoomLevel: function() {
return level;
}
}
})();

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/*!
* reveal.js Zoom plugin
*/
const e={id:"zoom",init:function(e){e.getRevealElement().addEventListener("mousedown",(function(t){var n=/Linux/.test(window.navigator.platform)?"ctrl":"alt",i=(e.getConfig().zoomKey?e.getConfig().zoomKey:n)+"Key",d=e.getConfig().zoomLevel?e.getConfig().zoomLevel:2;t[i]&&!e.isOverview()&&(t.preventDefault(),o.to({x:t.clientX,y:t.clientY,scale:d,pan:!1}))}))},destroy:()=>{o.reset()}};var t=()=>e,o=function(){var e=1,t=0,n=0,i=-1,d=-1,l="transform"in document.body.style;function s(t,o){var n=r();if(t.width=t.width||1,t.height=t.height||1,t.x-=(window.innerWidth-t.width*o)/2,t.y-=(window.innerHeight-t.height*o)/2,l)if(1===o)document.body.style.transform="";else{var i=n.x+"px "+n.y+"px",d="translate("+-t.x+"px,"+-t.y+"px) scale("+o+")";document.body.style.transformOrigin=i,document.body.style.transform=d}else 1===o?(document.body.style.position="",document.body.style.left="",document.body.style.top="",document.body.style.width="",document.body.style.height="",document.body.style.zoom=""):(document.body.style.position="relative",document.body.style.left=-(n.x+t.x)/o+"px",document.body.style.top=-(n.y+t.y)/o+"px",document.body.style.width=100*o+"%",document.body.style.height=100*o+"%",document.body.style.zoom=o);e=o,document.documentElement.classList&&(1!==e?document.documentElement.classList.add("zoomed"):document.documentElement.classList.remove("zoomed"))}function c(){var o=.12*window.innerWidth,i=.12*window.innerHeight,d=r();n<i?window.scroll(d.x,d.y-14/e*(1-n/i)):n>window.innerHeight-i&&window.scroll(d.x,d.y+(1-(window.innerHeight-n)/i)*(14/e)),t<o?window.scroll(d.x-14/e*(1-t/o),d.y):t>window.innerWidth-o&&window.scroll(d.x+(1-(window.innerWidth-t)/o)*(14/e),d.y)}function r(){return{x:void 0!==window.scrollX?window.scrollX:window.pageXOffset,y:void 0!==window.scrollY?window.scrollY:window.pageYOffset}}return l&&(document.body.style.transition="transform 0.8s ease"),document.addEventListener("keyup",(function(t){1!==e&&27===t.keyCode&&o.out()})),document.addEventListener("mousemove",(function(o){1!==e&&(t=o.clientX,n=o.clientY)})),{to:function(t){if(1!==e)o.out();else{if(t.x=t.x||0,t.y=t.y||0,t.element){var n=t.element.getBoundingClientRect();t.x=n.left-20,t.y=n.top-20,t.width=n.width+40,t.height=n.height+40}void 0!==t.width&&void 0!==t.height&&(t.scale=Math.max(Math.min(window.innerWidth/t.width,window.innerHeight/t.height),1)),t.scale>1&&(t.x*=t.scale,t.y*=t.scale,s(t,t.scale),!1!==t.pan&&(i=setTimeout((function(){d=setInterval(c,1e3/60)}),800)))}},out:function(){clearTimeout(i),clearInterval(d),s({x:0,y:0},1),e=1},magnify:function(e){this.to(e)},reset:function(){this.out()},zoomLevel:function(){return e}}}();
/*!
* zoom.js 0.3 (modified for use with reveal.js)
* http://lab.hakim.se/zoom-js
* MIT licensed
*
* Copyright (C) 2011-2014 Hakim El Hattab, http://hakim.se
*/export{t as default};

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!function(e,t){"object"==typeof exports&&"undefined"!=typeof module?module.exports=t():"function"==typeof define&&define.amd?define(t):(e="undefined"!=typeof globalThis?globalThis:e||self).RevealZoom=t()}(this,(function(){"use strict";
/*!
* reveal.js Zoom plugin
*/const e={id:"zoom",init:function(e){e.getRevealElement().addEventListener("mousedown",(function(o){var n=/Linux/.test(window.navigator.platform)?"ctrl":"alt",i=(e.getConfig().zoomKey?e.getConfig().zoomKey:n)+"Key",d=e.getConfig().zoomLevel?e.getConfig().zoomLevel:2;o[i]&&!e.isOverview()&&(o.preventDefault(),t.to({x:o.clientX,y:o.clientY,scale:d,pan:!1}))}))},destroy:()=>{t.reset()}};var t=function(){var e=1,o=0,n=0,i=-1,d=-1,l="transform"in document.body.style;function s(t,o){var n=r();if(t.width=t.width||1,t.height=t.height||1,t.x-=(window.innerWidth-t.width*o)/2,t.y-=(window.innerHeight-t.height*o)/2,l)if(1===o)document.body.style.transform="";else{var i=n.x+"px "+n.y+"px",d="translate("+-t.x+"px,"+-t.y+"px) scale("+o+")";document.body.style.transformOrigin=i,document.body.style.transform=d}else 1===o?(document.body.style.position="",document.body.style.left="",document.body.style.top="",document.body.style.width="",document.body.style.height="",document.body.style.zoom=""):(document.body.style.position="relative",document.body.style.left=-(n.x+t.x)/o+"px",document.body.style.top=-(n.y+t.y)/o+"px",document.body.style.width=100*o+"%",document.body.style.height=100*o+"%",document.body.style.zoom=o);e=o,document.documentElement.classList&&(1!==e?document.documentElement.classList.add("zoomed"):document.documentElement.classList.remove("zoomed"))}function c(){var t=.12*window.innerWidth,i=.12*window.innerHeight,d=r();n<i?window.scroll(d.x,d.y-14/e*(1-n/i)):n>window.innerHeight-i&&window.scroll(d.x,d.y+(1-(window.innerHeight-n)/i)*(14/e)),o<t?window.scroll(d.x-14/e*(1-o/t),d.y):o>window.innerWidth-t&&window.scroll(d.x+(1-(window.innerWidth-o)/t)*(14/e),d.y)}function r(){return{x:void 0!==window.scrollX?window.scrollX:window.pageXOffset,y:void 0!==window.scrollY?window.scrollY:window.pageYOffset}}return l&&(document.body.style.transition="transform 0.8s ease"),document.addEventListener("keyup",(function(o){1!==e&&27===o.keyCode&&t.out()})),document.addEventListener("mousemove",(function(t){1!==e&&(o=t.clientX,n=t.clientY)})),{to:function(o){if(1!==e)t.out();else{if(o.x=o.x||0,o.y=o.y||0,o.element){var n=o.element.getBoundingClientRect();o.x=n.left-20,o.y=n.top-20,o.width=n.width+40,o.height=n.height+40}void 0!==o.width&&void 0!==o.height&&(o.scale=Math.max(Math.min(window.innerWidth/o.width,window.innerHeight/o.height),1)),o.scale>1&&(o.x*=o.scale,o.y*=o.scale,s(o,o.scale),!1!==o.pan&&(i=setTimeout((function(){d=setInterval(c,1e3/60)}),800)))}},out:function(){clearTimeout(i),clearInterval(d),s({x:0,y:0},1),e=1},magnify:function(e){this.to(e)},reset:function(){this.out()},zoomLevel:function(){return e}}}();
/*!
* zoom.js 0.3 (modified for use with reveal.js)
* http://lab.hakim.se/zoom-js
* MIT licensed
*
* Copyright (C) 2011-2014 Hakim El Hattab, http://hakim.se
*/return()=>e}));