clean up initialization, conditionally load classList polyfill prior to reveal.js

slidechange doesn't get fired on "hashchange" events

.gitignore

@@ -2,3 +2,4 @@
 .svn
 log/*.log
 tmp/**
+node_modules/

LICENSE

@@ -1,4 +1,4 @@
-Copyright (C) 2011 Hakim El Hattab, http://hakim.se
+Copyright (C) 2012 Hakim El Hattab, http://hakim.se
 
 Permission is hereby granted, free of charge, to any person obtaining a copy
 of this software and associated documentation files (the "Software"), to deal

README.md

@@ -1,11 +1,251 @@
-# CSS 3D Slideshow
+# reveal.js
 
-Requires a browser with support for CSS 3D transforms, such as Chrome or Safari. 
+A CSS 3D slideshow tool for quickly creating good looking HTML presentations. Doesn't _rely_ on any external libraries but [highlight.js](http://softwaremaniacs.org/soft/highlight/en/description/) is included by default for code highlighting.
 
-Curious about how this looks in action? [Check out the demo page.](http://hakim.se/experiments/css/slideshow/).
+Note that this requires a browser with support for CSS 3D transforms and ``classList``. If CSS 3D support is not detected, the presentation will degrade to less exciting 2D transitions. A [classList polyfill](http://purl.eligrey.com/github/classList.js/blob/master/classList.js) is incuded to make this work in < iOS 5, < Safari 5.1 and IE.
 
-# License
+Curious about how it looks in action? [Check out the demo page](http://lab.hakim.se/reveal-js/).
+
+## Usage
+
+### Markup
+
+Markup heirarchy needs to be ``<div class="reveal"> <div class="slides"> <section>`` where the ``<section>`` represents one slide and can be repeated indefinitely. If you place multiple ``<section>``'s inside of another ``<section>`` they will be shown as vertical slides. For example:
+
+```html
+<div class="reveal">
+	<div class="slides"> 
+		<section>Single Horizontal Slide</section>
+		<section>
+			<section>Vertical Slide 1</section>
+			<section>Vertical Slide 2</section>
+		</section>
+	</div>
+</div>
+```
+
+### Configuration
+
+At the end of your page, after ``<script src="js/reveal.js"></script>``, you need to initialize reveal by running the following code. Note that all config values are optional and will default as specified below.
+
+```javascript
+Reveal.initialize({
+	// Display controls in the bottom right corner
+	controls: true,
+
+	// Display a presentation progress bar
+	progress: true,
+
+	// Push each slide change to the browser history
+	history: false,
+
+	// Enable keyboard shortcuts for navigation
+	keyboard: true,
+
+	// Loop the presentation
+	loop: false,
+
+	// Number of milliseconds between automatically proceeding to the 
+	// next slide, disabled when set to 0
+	autoSlide: 0,
+
+	// Enable slide navigation via mouse wheel
+	mouseWheel: true,
+
+	// Apply a 3D roll to links on hover
+	rollingLinks: true,
+
+	// UI style
+	theme: 'default', // default/neon/beige
+
+	// Transition style
+	transition: 'default' // default/cube/page/concave/linear(2d)
+});
+```
+
+### API
+
+The Reveal class provides a minimal JavaScript API for controlling its navigation:
+
+- Reveal.navigateTo( indexh, indexv );
+- Reveal.navigateLeft();
+- Reveal.navigateRight();
+- Reveal.navigateUp();
+- Reveal.navigateDown();
+- Reveal.navigatePrev();
+- Reveal.navigateNext();
+- Reveal.toggleOverview();
+
+### States
+
+If you set ``data-state="somestate"`` on a slide ``<section>``, "somestate" will be applied as a class on the document element when that slide is opened. This allows you to apply broad style changes to the page based on the active slide.
+
+Furthermore you can also listen to these changes in state via JavaScript:
+
+```javascript
+Reveal.addEventListener( 'somestate', function() {
+	// TODO: Sprinkle magic
+}, false );
+```
+
+### Slide change event
+
+An 'slidechanged' event is fired each time the slide is changed (regardless of state). The event object holds the index values of the current slide as well as a reference to the previous and current slide HTML nodes.
+
+```javascript
+Reveal.addEventListener( 'slidechanged', function( event ) {
+	// event.previousSlide, event.currentSlide, event.indexh, event.indexv
+} );
+```
+
+### Fragment events
+
+When a slide fragment is either shown or hidden reveal.js will dispatch an event.
+
+```javascript
+Reveal.addEventListener( 'fragmentshown', function( event ) {
+	// event.fragment = the fragment DOM element
+} );
+Reveal.addEventListener( 'fragmenthidden', function( event ) {
+	// event.fragment = the fragment DOM element
+} );
+```
+
+### Folder Structure
+- **css/** Core styles without which the project does not function
+- **js/** Like above but for JavaScript
+- **plugin/** Components that have been developed as extensions to reveal.js
+- **lib/** All other third party assets (JavaScript, CSS, fonts)
+
+## Speaker Notes
+
+If you're interested in using speaker notes, reveal.js comes with a Node server that allows you to deliver your presentation in one browser while viewing speaker notes in another. 
+
+To include speaker notes in your presentation, simply add an `<aside class="notes">` element to any slide. These notes will be hidden in the main presentation view.
+
+You'll also need to [install Node.js](http://nodejs.org/); then, install the server dependencies by running `npm install`.
+
+Once Node.js and the dependencies are installed, run the following command from the root directory:
+
+		node plugin/speakernotes
+
+By default, the slides will be served at [localhost:1947](http://localhost:1947).
+
+You can change the appearance of the speaker notes by editing the file at `plugin/speakernotes/notes.html`.	
+
+### Known Issues
+
+- The notes page is supposed to show the current slide and the next slide, but when it first starts, it always shows the first slide in both positions. 
+
+## Examples
+
+* http://lab.hakim.se/reveal-js/ (original)
+* http://www.ideapolisagency.com/ by [@achrafkassioui](http://twitter.com/achrafkassioui)
+* http://lucienfrelin.com/ by [@lucienfrelin](http://twitter.com/lucienfrelin)
+* http://creatorrr.github.com/ThePoet/
+* http://moduscreate.com/ by [@ModusCreate](https://twitter.com/ModusCreate)
+* http://idea.diwank.name/ by [Diwank Singh](http://diwank.name/)
+* [Webapp Development Stack & Tooling](http://dl.dropbox.com/u/39519/talks/jquk-tooling%2Bappstack/index.html) by [Paul Irish](https://github.com/paulirish)
+* [Lock-free algorithms](http://concurrencykit.org/presentations/lockfree_introduction/) by Samy Al Bahra
+* [Not Your Average Drag and Drop](http://www.thecssninja.com/talks/not_your_average_dnd/) by [Ryan Seddon](https://github.com/ryanseddon)
+* [Elasticsearch](http://spinscale.github.com/elasticsearch/2012-03-jugm.html) by [@spinscale](http://twitter.com/spinscale)
+* [JavaScript Tooling](http://dl.dropbox.com/u/39519/talks/jsconf-tools/index.html) by [Paul Irish](https://github.com/paulirish)
+* [The Graphical Web: Fostering Creativity](http://vhardy.github.com/presentations/html5-community-meet-up-2012/) by [Vincent Hardy](https://github.com/vhardy)
+* [Mobile Web Programming is a Bloody Mess](http://westcoastlogic.com/slides/debug-mobile/) by [Brian LeRoux](https://github.com/brianleroux)
+* [Bio Database Access and Sequence Alignment](http://www.philipbjorge.com/bioinformatics-presentation/) by [Philip Bjorge](https://github.com/philipbjorge)
+* [Web vs Native](http://prez.mahemoff.com/state-native/) by [Michael Mahemoff](https://github.com/mahemoff)
+* [Continuously Integrated JS Development](http://trodrigues.net/presentations/buster-ci/) by [Tiago Rodrigues](https://github.com/trodrigues)
+* [To be Future Friendly is to be Device Agnostic](http://dl.dropbox.com/u/409429/presentations/toster-2012/index.html) by [Joe McCann](https://github.com/joemccann)
+* [The Web Development Workflow of 2013](http://dl.dropbox.com/u/39519/talks/fluent/index.html) by [Paul Irish](https://github.com/paulirish)
+* [How To Cope With Graphical Challenges Using Latest Web Technologies](http://alexw.me/playground/slideshows/w3c_netcraft/) by [Alex Wolkov](https://github.com/altryne)
+* [Going Deeper with jQuery Mobile](http://andymatthews.net/downloads/presentations/going-deeper-with-jquery-mobile/) by [Andy Matthews](https://github.com/commadelimited)
+* [Studio Nord](http://studionord.org)
+* [Herrljunga Cider](http://herrljungacider.se/uk/campaign/)
+
+
+[Send me a link](http://hakim.se/about/contact) if you used reveal.js for a project or presentation.
+
+
+## History
+
+#### 1.4 (master/beta)
+- Main #reveal container is now selected via a class instead of ID
+- API methods for adding or removing all event listeners
+- The ```slidechange``` event now includes currentSlide and previousSlide
+- Fixed bug where 'slidechange' was firing twice when history was enabled
+- Folder structure updates for scalability (see /lib & /plugin)
+- Slide notes by [rmurphey](https://github.com/rmurphey)
+- Bumped up default font-size for code samples
+- Added beige theme
+- Added 'autoSlide' config
+- Bug fix: The 'slidechanged' event is now firing upon 'hashchange'. Thanks [basecode](https://github.com/basecode)
+- Bug fix: JS error when the 'progress' option was true but there was no progress DOM element
+- ```keyboard``` config flag for disabling all keyboard navigation
+
+#### 1.3
+- Revised keyboard shortcuts, including ESC for overview, N for next, P for previous. Thanks [mahemoff](https://github.com/mahemoff)
+- Added support for looped presentations via config
+- Fixed IE9 fallback
+- Added event binding methods (Reveal.addEventListener, Reveal.removeEventListener)
+- Added 'slidechanged' event
+- Added print styles. Thanks [skypanther](https://github.com/skypanther)
+- The address bar now hides automatically on mobile browsers
+- Space and return keys can be used to exit the overview mode
+- Events for fragment states ('fragmentshown'/'fragmenthidden')
+- Support for swipe navigation on touch devices. Thanks [akiersky](https://github.com/akiersky)
+- Support for pinch to overview on touch devices
+
+#### 1.2
+
+- Big changes to DOM structure:
+  - Previous #main wrapper is now called #reveal
+  - Slides were moved one level deeper, into #reveal .slides
+  - Controls and progress bar were moved into #reveal
+- CSS is now much more explicit, rooted at #reveal, to prevent conflicts
+- Config option for disabling updates to URL, defaults to true
+- Anchors with image children no longer rotate in 3D on hover
+- Support for mouse wheel navigation ([naugtur](https://github.com/naugtur))
+- Delayed updates to URL hash to work around a bug in Chrome
+- Included a classList polyfill for IE9
+- Support for wireless presenter keys
+- States can now be applied as classes on the document element by adding data-state on a slide
+
+#### 1.1
+
+- Added an optional presentation progress bar
+- Images wrapped in anchors no longer unexpectedly flip in 3D
+- Slides that contain other slides are given the 'stack' class
+- Added 'transition' option for specifying transition styles
+- Added 'theme' option for specifying UI styles
+- New transitions: 'box' & 'page'
+- New theme: 'neon'
+
+#### 1.0
+
+- New and improved style
+- Added controls in bottom right which indicate where you can navigate
+- Reveal views in iteratively by giving them the .fragment class
+- Code sample syntax highlighting thanks to [highlight.js](http://softwaremaniacs.org/soft/highlight/en/description/)
+- Initialization options (toggling controls, toggling rolling links, transition theme)
+
+#### 0.3
+
+- Added licensing terms
+- Fixed broken links on touch devices
+
+#### 0.2
+
+- Refactored code and added inline documentation
+- Slides now have unique URL's
+- A basic API to invoke navigation was added
+
+#### 0.1
+
+- First release
+- Transitions and a white theme
+
+## License
 
 MIT licensed
 
-Copyright (C) 2011 Hakim El Hattab, http://hakim.se
+Copyright (C) 2012 Hakim El Hattab, http://hakim.se

css/print.css

@@ -0,0 +1,167 @@
+/* Default Print Stylesheet Template
+   by Rob Glazebrook of CSSnewbie.com
+   Last Updated: June 4, 2008
+
+   Feel free (nay, compelled) to edit, append, and 
+   manipulate this file as you see fit. */
+
+
+/* SECTION 1: Set default width, margin, float, and
+   background. This prevents elements from extending 
+   beyond the edge of the printed page, and prevents
+   unnecessary background images from printing */
+body {
+	background: #fff url(none);
+	font-size: 13pt;
+	width: auto;
+	height: auto;
+	border: 0;
+	margin: 0 5%;
+	padding: 0;
+	float: none !important;
+	overflow: visible;
+}
+html {
+	background: #fff;
+	width: auto;
+	height: auto;
+	overflow: visible;
+}
+
+/* SECTION 2: Remove any elements not needed in print. 
+   This would include navigation, ads, sidebars, etc. */
+.nestedarrow, 
+.controls a, 
+.reveal .progress span, 
+.reveal.overview {
+	display:none;
+}
+
+/* SECTION 3: Set body font face, size, and color.
+   Consider using a serif font for readability. */
+body, p, td, li, div, a {
+	font-size: 13pt;
+	font-family: Georgia, "Times New Roman", Times, serif !important;
+	color: #000; 
+}
+
+/* SECTION 4: Set heading font face, sizes, and color.
+   Diffrentiate your headings from your body text.
+   Perhaps use a large sans-serif for distinction. */
+h1,h2,h3,h4,h5,h6 {
+	color: #000!important;
+	height: auto;
+	line-height: normal;
+	font-family: Georgia, "Times New Roman", Times, serif !important;
+	text-shadow: 0 0 0 #000 !important;
+	text-align: left;
+	letter-spacing: normal;
+}
+/* Need to reduce the size of the fonts for printing */
+h1 { font-size: 26pt !important;  }
+h2 { font-size: 22pt !important; }
+h3 { font-size: 20pt !important; }
+h4 { font-size: 20pt !important; font-variant: small-caps; }
+h5 { font-size: 19pt !important; }
+h6 { font-size: 18pt !important; font-style: italic; }
+
+/* SECTION 5: Make hyperlinks more usable.
+   Ensure links are underlined, and consider appending
+   the URL to the end of the link for usability. */
+a:link, 
+a:visited {
+	color: #000 !important;
+	font-weight: bold;
+	text-decoration: underline;
+}
+.reveal a:link:after, 
+.reveal a:visited:after {
+	content: " (" attr(href) ") ";
+	color: #222 !important;
+	font-size: 90%;
+}
+
+
+/* SECTION 6: more reveal.js specific additions by @skypanther */
+ul, ol, div, p {
+	visibility: visible;
+	position: static;
+	width: auto;
+	height: auto;
+	display: block;
+	overflow: visible;
+	margin: auto;
+	text-align: left !important;
+}
+.reveal .slides {
+	position: static;
+	width: auto;
+	height: auto;
+
+	left: auto;
+	top: auto;
+	margin-left: auto;
+	margin-top: auto;
+	padding: auto;
+
+	overflow: visible;
+	display: block;
+
+	text-align: center;
+	-webkit-perspective: none;
+	   -moz-perspective: none;
+	    -ms-perspective: none;
+	        perspective: none;
+
+	-webkit-perspective-origin: 50% 50%; /* there isn't a none/auto value but 50-50 is the default */
+	   -moz-perspective-origin: 50% 50%;
+	    -ms-perspective-origin: 50% 50%;
+	        perspective-origin: 50% 50%;
+}
+.reveal .slides>section, .reveal .slides>section>section, 
+.reveal .slides>section.past, .reveal .slides>section.future,
+.reveal.linear .slides>section, .reveal.linear .slides>section>section,
+.reveal.linear .slides>section.past, .reveal.linear .slides>section.future {
+	
+	visibility: visible;
+	position: static;
+	width: 90%;
+	height: auto;
+	display: block;
+	overflow: visible;
+
+	left: 0%;
+	top: 0%;
+	margin-left: 0px;
+	margin-top: 0px;
+	padding: 20px 0px;
+
+	opacity: 1;
+
+	-webkit-transform-style: flat;
+	   -moz-transform-style: flat;
+	    -ms-transform-style: flat;
+	        transform-style: flat;
+
+	-webkit-transform: none;
+	   -moz-transform: none;
+	    -ms-transform: none;
+	        transform: none;
+}
+.reveal section {
+	page-break-after: always !important; 
+	display: block !important;
+}
+.reveal section.stack {
+	page-break-after: avoid !important; 
+}
+.reveal section .fragment {
+	opacity: 1 !important;
+}
+.reveal section img {
+	display: block;
+	margin: 15px 0px;
+	background: rgba(255,255,255,1);
+	border: 1px solid #666;
+	box-shadow: none;
+}

js/reveal.js

@@ -0,0 +1,996 @@
+/*!
+ * reveal.js 1.4
+ * http://lab.hakim.se/reveal-js
+ * MIT licensed
+ * 
+ * Copyright (C) 2012 Hakim El Hattab, http://hakim.se
+ */
+var Reveal = (function(){
+	
+	var HORIZONTAL_SLIDES_SELECTOR = '.reveal .slides>section',
+		VERTICAL_SLIDES_SELECTOR = '.reveal .slides>section.present>section',
+
+		IS_TOUCH_DEVICE = !!( 'ontouchstart' in window ),
+
+		// The horizontal and verical index of the currently active slide
+		indexh = 0,
+		indexv = 0,
+
+		// Configurations defaults, can be overridden at initialization time 
+		config = {
+			// Display controls in the bottom right corner
+			controls: true,
+
+			// Display a presentation progress bar
+			progress: true,
+
+			// Push each slide change to the browser history
+			history: false,
+
+			// Enable keyboard shortcuts for navigation
+			keyboard: true,
+
+			// Loop the presentation
+			loop: false,
+
+			// Number of milliseconds between automatically proceeding to the 
+			// next slide, disabled when set to 0
+			autoSlide: 0,
+
+			// Enable slide navigation via mouse wheel
+			mouseWheel: true,
+
+			// Apply a 3D roll to links on hover
+			rollingLinks: true,
+
+			// UI style
+			theme: 'default', // default/neon/beige
+
+			// Transition style
+			transition: 'default' // default/cube/page/concave/linear(2d)
+		},
+
+		// Slides may hold a data-state attribute which we pick up and apply 
+		// as a class to the body. This list contains the combined state of 
+		// all current slides.
+		state = [],
+
+		// Cached references to DOM elements
+		dom = {},
+
+		// Detect support for CSS 3D transforms
+		supports3DTransforms =  document.body.style['WebkitPerspective'] !== undefined || 
+                        		document.body.style['MozPerspective'] !== undefined ||
+                        		document.body.style['msPerspective'] !== undefined ||
+                        		document.body.style['OPerspective'] !== undefined ||
+                        		document.body.style['perspective'] !== undefined,
+        
+        supports2DTransforms =  document.body.style['WebkitTransform'] !== undefined || 
+                        		document.body.style['MozTransform'] !== undefined ||
+                        		document.body.style['msTransform'] !== undefined ||
+                        		document.body.style['OTransform'] !== undefined ||
+                        		document.body.style['transform'] !== undefined,
+
+        // Detect support for elem.classList
+        supportsClassList = !!document.body.classList;
+		
+		// Throttles mouse wheel navigation
+		mouseWheelTimeout = 0,
+
+		// An interval used to automatically move on to the next slide
+		autoSlideTimeout = 0,
+
+		// Delays updates to the URL due to a Chrome thumbnailer bug
+		writeURLTimeout = 0,
+
+		// Holds information about the currently ongoing touch input
+		touch = {
+			startX: 0,
+			startY: 0,
+			startSpan: 0,
+			startCount: 0,
+			handled: false,
+			threshold: 40
+		};
+	
+	
+	/**
+	 * Starts up the slideshow by applying configuration
+	 * options and binding various events.
+	 */
+	function initialize( options ) {
+		
+		if( ( !supports2DTransforms && !supports3DTransforms ) || !supportsClassList ) {
+			document.body.setAttribute( 'class', 'no-transforms' );
+
+			// If the browser doesn't support core features we won't be 
+			// using JavaScript to control the presentation
+			return;
+		}
+
+		// Cache references to DOM elements
+		dom.wrapper = document.querySelector( '.reveal' );
+		dom.progress = document.querySelector( '.reveal .progress' );
+		dom.progressbar = document.querySelector( '.reveal .progress span' );
+		
+		if ( config.controls ) {
+			dom.controls = document.querySelector( '.reveal .controls' );
+			dom.controlsLeft = document.querySelector( '.reveal .controls .left' );
+			dom.controlsRight = document.querySelector( '.reveal .controls .right' );
+			dom.controlsUp = document.querySelector( '.reveal .controls .up' );
+			dom.controlsDown = document.querySelector( '.reveal .controls .down' );
+		}
+
+		addEventListeners();
+
+		// Copy options over to our config object
+		extend( config, options );
+
+		// Updates the presentation to match the current configuration values
+		configure();
+
+		// Read the initial hash
+		readURL();
+
+		// Start auto-sliding if it's enabled
+		cueAutoSlide();
+
+		// Set up hiding of the browser address bar
+		if( navigator.userAgent.match( /(iphone|ipod|android)/i ) ) {
+			// Give the page some scrollable overflow
+			document.documentElement.style.overflow = 'scroll';
+			document.body.style.height = '120%';
+
+			// Events that should trigger the address bar to hide
+			window.addEventListener( 'load', removeAddressBar, false );
+			window.addEventListener( 'orientationchange', removeAddressBar, false );
+		}
+		
+	}
+
+	function configure() {
+		if( supports3DTransforms === false ) {
+			// Fall back on the 2D transform theme 'linear'
+			config.transition = 'linear';
+		}
+
+		if( config.controls && dom.controls ) {
+			dom.controls.style.display = 'block';
+		}
+
+		if( config.progress && dom.progress ) {
+			dom.progress.style.display = 'block';
+		}
+
+		if( config.transition !== 'default' ) {
+			dom.wrapper.classList.add( config.transition );
+		}
+
+		if( config.theme !== 'default' ) {
+			document.documentElement.classList.add( 'theme-' + config.theme );
+		}
+
+		if( config.mouseWheel ) {
+			document.addEventListener( 'DOMMouseScroll', onDocumentMouseScroll, false ); // FF
+			document.addEventListener( 'mousewheel', onDocumentMouseScroll, false );
+		}
+
+		if( config.rollingLinks ) {
+			// Add some 3D magic to our anchors
+			linkify();
+		}
+	}
+
+	function addEventListeners() {
+		document.addEventListener( 'touchstart', onDocumentTouchStart, false );
+		document.addEventListener( 'touchmove', onDocumentTouchMove, false );
+		document.addEventListener( 'touchend', onDocumentTouchEnd, false );
+		window.addEventListener( 'hashchange', onWindowHashChange, false );
+
+		if( config.keyboard ) {
+			document.addEventListener( 'keydown', onDocumentKeyDown, false );
+		}
+
+		if ( config.controls && dom.controls ) {
+			dom.controlsLeft.addEventListener( 'click', preventAndForward( navigateLeft ), false );
+			dom.controlsRight.addEventListener( 'click', preventAndForward( navigateRight ), false );
+			dom.controlsUp.addEventListener( 'click', preventAndForward( navigateUp ), false );
+			dom.controlsDown.addEventListener( 'click', preventAndForward( navigateDown ), false );	
+		}
+	}
+
+	function removeEventListeners() {
+		document.removeEventListener( 'keydown', onDocumentKeyDown, false );
+		document.removeEventListener( 'touchstart', onDocumentTouchStart, false );
+		document.removeEventListener( 'touchmove', onDocumentTouchMove, false );
+		document.removeEventListener( 'touchend', onDocumentTouchEnd, false );
+		window.removeEventListener( 'hashchange', onWindowHashChange, false );
+		
+		if ( config.controls && dom.controls ) {
+			dom.controlsLeft.removeEventListener( 'click', preventAndForward( navigateLeft ), false );
+			dom.controlsRight.removeEventListener( 'click', preventAndForward( navigateRight ), false );
+			dom.controlsUp.removeEventListener( 'click', preventAndForward( navigateUp ), false );
+			dom.controlsDown.removeEventListener( 'click', preventAndForward( navigateDown ), false );
+		}
+	}
+
+	/**
+	 * Extend object a with the properties of object b. 
+	 * If there's a conflict, object b takes precedence.
+	 */
+	function extend( a, b ) {
+		for( var i in b ) {
+			a[ i ] = b[ i ];
+		}
+	}
+
+	/**
+	 * 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
+	 */
+	function distanceBetween( a, b ) {
+		var dx = a.x - b.x,
+			dy = a.y - b.y;
+
+		return Math.sqrt( dx*dx + dy*dy );
+	}
+
+	/**
+	 * Prevents an events defaults behavior calls the 
+	 * specified delegate.
+	 * 
+	 * @param {Function} delegate The method to call 
+	 * after the wrapper has been executed
+	 */
+	function preventAndForward( delegate ) {
+		return function( event ) {
+			event.preventDefault();
+			delegate.call();
+		}
+	}
+
+	/**
+	 * Causes the address bar to hide on mobile devices, 
+	 * more vertical space ftw.
+	 */
+	function removeAddressBar() {
+		setTimeout( function() {
+			window.scrollTo( 0, 1 );
+		}, 0 );
+	}
+	
+	/**
+	 * Handler for the document level 'keydown' event.
+	 * 
+	 * @param {Object} event
+	 */
+	function onDocumentKeyDown( event ) {
+		// FFT: Use document.querySelector( ':focus' ) === null 
+		// instead of checking contentEditable?
+
+		// Disregard the event if the target is editable or a 
+		// modifier is present
+		if ( event.target.contentEditable != 'inherit' || event.shiftKey || event.altKey || event.ctrlKey || event.metaKey ) return;
+				
+		var triggered = false;
+
+		switch( event.keyCode ) {
+			// p, page up
+			case 80: case 33: navigatePrev(); triggered = true; break; 
+			// n, page down
+			case 78: case 34: navigateNext(); triggered = true; break;
+			// h, left
+			case 72: case 37: navigateLeft(); triggered = true; break;
+			// l, right
+			case 76: case 39: navigateRight(); triggered = true; break;
+			// k, up
+			case 75: case 38: navigateUp(); triggered = true; break;
+			// j, down
+			case 74: case 40: navigateDown(); triggered = true; break;
+			// home
+			case 36: navigateTo( 0 ); triggered = true; break;
+			// end
+			case 35: navigateTo( Number.MAX_VALUE ); triggered = true; break;
+			// space
+			case 32: overviewIsActive() ? deactivateOverview() : navigateNext(); triggered = true; break;
+			// return
+			case 13: if( overviewIsActive() ) { deactivateOverview(); triggered = true; } break;
+		}
+
+		// If the input resulted in a triggered action we should prevent 
+		// the browsers default behavior
+		if( triggered ) {
+			event.preventDefault();
+		}
+		else if ( event.keyCode === 27 && supports3DTransforms ) {
+			toggleOverview();
+	
+			event.preventDefault();
+		}
+
+		// If auto-sliding is enabled we need to cue up 
+		// another timeout
+		cueAutoSlide();
+
+	}
+
+	/**
+	 * Handler for the document level 'touchstart' event,
+	 * enables support for swipe and pinch gestures.
+	 */
+	function onDocumentTouchStart( event ) {
+		touch.startX = event.touches[0].clientX;
+		touch.startY = event.touches[0].clientY;
+		touch.startCount = event.touches.length;
+
+		// If there's two touches we need to memorize the distance 
+		// between those two points to detect pinching
+		if( event.touches.length === 2 ) {
+			touch.startSpan = distanceBetween( {
+				x: event.touches[1].clientX,
+				y: event.touches[1].clientY
+			}, {
+				x: touch.startX,
+				y: touch.startY
+			} );
+		}
+	}
+	
+	/**
+	 * Handler for the document level 'touchmove' event.
+	 */
+	function onDocumentTouchMove( event ) {
+		// Each touch should only trigger one action
+		if( !touch.handled ) {
+			var currentX = event.touches[0].clientX;
+			var currentY = event.touches[0].clientY;
+
+			// If the touch started off with two points and still has 
+			// two active touches; test for the pinch gesture
+			if( event.touches.length === 2 && touch.startCount === 2 ) {
+
+				// The current distance in pixels between the two touch points
+				var currentSpan = distanceBetween( {
+					x: event.touches[1].clientX,
+					y: event.touches[1].clientY
+				}, {
+					x: touch.startX,
+					y: touch.startY
+				} );
+
+				// If the span is larger than the desire amount we've got 
+				// ourselves a pinch
+				if( Math.abs( touch.startSpan - currentSpan ) > touch.threshold ) {
+					touch.handled = true;
+
+					if( currentSpan < touch.startSpan ) {
+						activateOverview();
+					}
+					else {
+						deactivateOverview();
+					}
+				}
+
+			}
+			// There was only one touch point, look for a swipe
+			else if( event.touches.length === 1 ) {
+				var deltaX = currentX - touch.startX,
+					deltaY = currentY - touch.startY;
+
+				if( deltaX > touch.threshold && Math.abs( deltaX ) > Math.abs( deltaY ) ) {
+					touch.handled = true;
+					navigateLeft();
+				} 
+				else if( deltaX < -touch.threshold && Math.abs( deltaX ) > Math.abs( deltaY ) ) {
+					touch.handled = true;
+					navigateRight();
+				} 
+				else if( deltaY > touch.threshold ) {
+					touch.handled = true;
+					navigateUp();
+				} 
+				else if( deltaY < -touch.threshold ) {
+					touch.handled = true;
+					navigateDown();
+				}
+			}
+
+			event.preventDefault();
+		}
+	}
+
+	/**
+	 * Handler for the document level 'touchend' event.
+	 */
+	function onDocumentTouchEnd( event ) {
+		touch.handled = false;
+	}
+
+	/**
+	 * Handles mouse wheel scrolling, throttled to avoid 
+	 * skipping multiple slides.
+	 */
+	function onDocumentMouseScroll( event ){
+		clearTimeout( mouseWheelTimeout );
+
+		mouseWheelTimeout = setTimeout( function() {
+			var delta = event.detail || -event.wheelDelta;
+			if( delta > 0 ) {
+				navigateNext();
+			}
+			else {
+				navigatePrev();
+			}
+		}, 100 );
+	}
+	
+	/**
+	 * Handler for the window level 'hashchange' event.
+	 * 
+	 * @param {Object} event
+	 */
+	function onWindowHashChange( event ) {
+		readURL();
+	}
+
+	/**
+	 * Wrap all links in 3D goodness.
+	 */
+	function linkify() {
+        if( supports3DTransforms ) {
+        	var nodes = document.querySelectorAll( '.reveal .slides section a:not(.image)' );
+
+	        for( var i = 0, len = nodes.length; i < len; i++ ) {
+	            var node = nodes[i];
+	            
+	            if( node.textContent && !node.querySelector( 'img' ) && ( !node.className || !node.classList.contains( node, 'roll' ) ) ) {
+	                node.classList.add( 'roll' );
+	                node.innerHTML = '<span data-title="'+ node.text +'">' + node.innerHTML + '</span>';
+	            }
+	        };
+        }
+	}
+
+	/**
+	 * Displays the overview of slides (quick nav) by 
+	 * scaling down and arranging all slide elements.
+	 * 
+	 * Experimental feature, might be dropped if perf 
+	 * can't be improved.
+	 */
+	function activateOverview() {
+		
+		dom.wrapper.classList.add( 'overview' );
+
+		var horizontalSlides = Array.prototype.slice.call( document.querySelectorAll( HORIZONTAL_SLIDES_SELECTOR ) );
+
+		for( var i = 0, len1 = horizontalSlides.length; i < len1; i++ ) {
+			var hslide = horizontalSlides[i],
+				htransform = 'translateZ(-2500px) translate(' + ( ( i - indexh ) * 105 ) + '%, 0%)';
+			
+			hslide.setAttribute( 'data-index-h', i );
+			hslide.style.display = 'block';
+			hslide.style.WebkitTransform = htransform;
+			hslide.style.MozTransform = htransform;
+			hslide.style.msTransform = htransform;
+			hslide.style.OTransform = htransform;
+			hslide.style.transform = htransform;
+		
+			if( !hslide.classList.contains( 'stack' ) ) {
+				// Navigate to this slide on click
+				hslide.addEventListener( 'click', onOverviewSlideClicked, true );
+			}
+	
+			var verticalSlides = Array.prototype.slice.call( hslide.querySelectorAll( 'section' ) );
+
+			for( var j = 0, len2 = verticalSlides.length; j < len2; j++ ) {
+				var vslide = verticalSlides[j],
+					vtransform = 'translate(0%, ' + ( ( j - indexv ) * 105 ) + '%)';
+
+				vslide.setAttribute( 'data-index-h', i );
+				vslide.setAttribute( 'data-index-v', j );
+				vslide.style.display = 'block';
+				vslide.style.WebkitTransform = vtransform;
+				vslide.style.MozTransform = vtransform;
+				vslide.style.msTransform = vtransform;
+				vslide.style.OTransform = vtransform;
+				vslide.style.transform = vtransform;
+
+				// Navigate to this slide on click
+				vslide.addEventListener( 'click', onOverviewSlideClicked, true );
+			}
+			
+		}
+	}
+	
+	/**
+	 * Exits the slide overview and enters the currently
+	 * active slide.
+	 */
+	function deactivateOverview() {
+		dom.wrapper.classList.remove( 'overview' );
+
+		var slides = Array.prototype.slice.call( document.querySelectorAll( '.reveal .slides section' ) );
+
+		for( var i = 0, len = slides.length; i < len; i++ ) {
+			var element = slides[i];
+
+			// Resets all transforms to use the external styles
+			element.style.WebkitTransform = '';
+			element.style.MozTransform = '';
+			element.style.msTransform = '';
+			element.style.OTransform = '';
+			element.style.transform = '';
+
+			element.removeEventListener( 'click', onOverviewSlideClicked );
+		}
+
+		slide();
+	}
+
+	/**
+	 * Checks if the overview is currently active.
+	 * 
+	 * @return {Boolean} true if the overview is active,
+	 * false otherwise
+	 */
+	function overviewIsActive() {
+		return dom.wrapper.classList.contains( 'overview' );
+	}
+
+	/**
+	 * Invoked when a slide is and we're in the overview.
+	 */
+	function onOverviewSlideClicked( event ) {
+		// TODO There's a bug here where the event listeners are not 
+		// removed after deactivating the overview.
+		if( overviewIsActive() ) {
+			event.preventDefault();
+
+			deactivateOverview();
+
+			indexh = this.getAttribute( 'data-index-h' );
+			indexv = this.getAttribute( 'data-index-v' );
+
+			slide();
+		}
+	}
+
+	/**
+	 * Updates one dimension of slides by showing the slide
+	 * with the specified index.
+	 * 
+	 * @param {String} selector A CSS selector that will fetch
+	 * the group of slides we are working with
+	 * @param {Number} index The index of the slide that should be
+	 * shown
+	 * 
+	 * @return {Number} The index of the slide that is now shown,
+	 * might differ from the passed in index if it was out of 
+	 * bounds.
+	 */
+	function updateSlides( selector, index ) {
+		
+		// Select all slides and convert the NodeList result to
+		// an array
+		var slides = Array.prototype.slice.call( document.querySelectorAll( selector ) ),
+			slidesLength = slides.length;
+		
+		if( slidesLength ) {
+
+			// Should the index loop?
+			if( config.loop ) {
+				index %= slidesLength;
+
+				if( index < 0 ) {
+					index = slidesLength + index;
+				}
+			}
+			
+			// Enforce max and minimum index bounds
+			index = Math.max( Math.min( index, slidesLength - 1 ), 0 );
+			
+			for( var i = 0; i < slidesLength; i++ ) {
+				var slide = slides[i];
+
+				// Optimization; hide all slides that are three or more steps 
+				// away from the present slide
+				if( overviewIsActive() === false ) {
+					// The distance loops so that it measures 1 between the first
+					// and last slides
+					var distance = Math.abs( ( index - i ) % ( slidesLength - 3 ) ) || 0;
+
+					slide.style.display = distance > 3 ? 'none' : 'block';
+				}
+
+				slides[i].classList.remove( 'past' );
+				slides[i].classList.remove( 'present' );
+				slides[i].classList.remove( 'future' );
+
+				if( i < index ) {
+					// Any element previous to index is given the 'past' class
+					slides[i].classList.add( 'past' );
+				}
+				else if( i > index ) {
+					// Any element subsequent to index is given the 'future' class
+					slides[i].classList.add( 'future' );
+				}
+
+				// If this element contains vertical slides
+				if( slide.querySelector( 'section' ) ) {
+					slides[i].classList.add( 'stack' );
+				}
+			}
+
+			// Mark the current slide as present
+			slides[index].classList.add( 'present' );
+
+			// If this slide has a state associated with it, add it
+			// onto the current state of the deck
+			var slideState = slides[index].getAttribute( 'data-state' );
+			if( slideState ) {
+				state = state.concat( slideState.split( ' ' ) );
+			}
+		}
+		else {
+			// Since there are no slides we can't be anywhere beyond the 
+			// zeroth index
+			index = 0;
+		}
+		
+		return index;
+		
+	}
+	
+	/**
+	 * Updates the visual slides to represent the currently
+	 * set indices. 
+	 */
+	function slide( h, v ) {
+		// Remember the state before this slide
+		var stateBefore = state.concat();
+
+		// Reset the state array
+		state.length = 0;
+
+		var indexhBefore = indexh,
+			indexvBefore = indexv;
+
+		// Activate and transition to the new slide
+		indexh = updateSlides( HORIZONTAL_SLIDES_SELECTOR, h === undefined ? indexh : h );
+		indexv = updateSlides( VERTICAL_SLIDES_SELECTOR, v === undefined ? indexv : v );
+
+		// Apply the new state
+		stateLoop: for( var i = 0, len = state.length; i < len; i++ ) {
+			// Check if this state existed on the previous slide. If it 
+			// did, we will avoid adding it repeatedly.
+			for( var j = 0; j < stateBefore.length; j++ ) {
+				if( stateBefore[j] === state[i] ) {
+					stateBefore.splice( j, 1 );
+					continue stateLoop;
+				}
+			}
+
+			document.documentElement.classList.add( state[i] );
+
+			// Dispatch custom event matching the state's name
+			dispatchEvent( state[i] );
+		}
+
+		// Clean up the remaints of the previous state
+		while( stateBefore.length ) {
+			document.documentElement.classList.remove( stateBefore.pop() );
+		}
+
+		// Update progress if enabled
+		if( config.progress && dom.progress ) {
+			dom.progressbar.style.width = ( indexh / ( document.querySelectorAll( HORIZONTAL_SLIDES_SELECTOR ).length - 1 ) ) * window.innerWidth + 'px';
+		}
+
+		// Close the overview if it's active
+		if( overviewIsActive() ) {
+			activateOverview();
+		}
+
+		updateControls();
+		
+		clearTimeout( writeURLTimeout );
+		writeURLTimeout = setTimeout( writeURL, 1500 );
+
+		// Only fire if the slide index is different from before
+		if( indexh !== indexhBefore || indexv !== indexvBefore ) {
+			// Query all horizontal slides in the deck
+			var horizontalSlides = document.querySelectorAll( HORIZONTAL_SLIDES_SELECTOR );
+
+			// Find the previous and current horizontal slides
+			var previousHorizontalSlide = horizontalSlides[ indexhBefore ],
+				currentHorizontalSlide = horizontalSlides[ indexh ];
+
+			// Query all vertical slides inside of the previous and current horizontal slides
+			var previousVerticalSlides = previousHorizontalSlide.querySelectorAll( 'section' );
+				currentVerticalSlides = currentHorizontalSlide.querySelectorAll( 'section' );
+
+			// Dispatch an event notifying observers of the change in slide
+			dispatchEvent( 'slidechanged', {
+				// Include the current indices in the event
+				'indexh': indexh, 
+				'indexv': indexv,
+
+				// Passes direct references to the slide HTML elements, attempts to find
+				// a vertical slide and falls back on the horizontal parent
+				'previousSlide': previousVerticalSlides[ indexvBefore ] || previousHorizontalSlide,
+				'currentSlide': currentVerticalSlides[ indexv ] || currentHorizontalSlide
+			} );
+		}
+	}
+
+	/**
+	 * Updates the state and link pointers of the controls.
+	 */
+	function updateControls() {
+		if ( !config.controls || !dom.controls ) {
+			return;
+		}
+		
+		var routes = availableRoutes();
+
+		// Remove the 'enabled' class from all directions
+		[ dom.controlsLeft, dom.controlsRight, dom.controlsUp, dom.controlsDown ].forEach( function( node ) {
+			node.classList.remove( 'enabled' );
+		} )
+
+		if( routes.left ) dom.controlsLeft.classList.add( 'enabled' );
+		if( routes.right ) dom.controlsRight.classList.add( 'enabled' );
+		if( routes.up ) dom.controlsUp.classList.add( 'enabled' );
+		if( routes.down ) dom.controlsDown.classList.add( 'enabled' );
+	}
+
+	/**
+	 * Determine what available routes there are for navigation.
+	 * 
+	 * @return {Object} containing four booleans: left/right/up/down
+	 */
+	function availableRoutes() {
+		var horizontalSlides = document.querySelectorAll( HORIZONTAL_SLIDES_SELECTOR );
+		var verticalSlides = document.querySelectorAll( VERTICAL_SLIDES_SELECTOR );
+
+		return {
+			left: indexh > 0,
+			right: indexh < horizontalSlides.length - 1,
+			up: indexv > 0,
+			down: indexv < verticalSlides.length - 1
+		};
+	}
+	
+	/**
+	 * Reads the current URL (hash) and navigates accordingly.
+	 */
+	function readURL() {
+		// Break the hash down to separate components
+		var bits = window.location.hash.slice(2).split('/');
+
+		// Read the index components of the hash
+		var h = parseInt( bits[0] ) || 0 ;
+		var v = parseInt( bits[1] ) || 0 ;
+
+		navigateTo( h, v );
+	}
+	
+	/**
+	 * Updates the page URL (hash) to reflect the current
+	 * state. 
+	 */
+	function writeURL() {
+		if( config.history ) {
+			var url = '/';
+			
+			// Only include the minimum possible number of components in
+			// the URL
+			if( indexh > 0 || indexv > 0 ) url += indexh;
+			if( indexv > 0 ) url += '/' + indexv;
+			
+			window.location.hash = url;
+		}
+	}
+
+	/**
+	 * Dispatches an event of the specified type from the 
+	 * reveal DOM element.
+	 */
+	function dispatchEvent( type, properties ) {
+		var event = document.createEvent( "HTMLEvents", 1, 2 );
+		event.initEvent( type, true, true );
+		extend( event, properties );
+		dom.wrapper.dispatchEvent( event );
+	}
+
+	/**
+	 * Navigate to the next slide fragment.
+	 * 
+	 * @return {Boolean} true if there was a next fragment,
+	 * false otherwise
+	 */
+	function nextFragment() {
+		// Vertical slides:
+		if( document.querySelector( VERTICAL_SLIDES_SELECTOR + '.present' ) ) {
+			var verticalFragments = document.querySelectorAll( VERTICAL_SLIDES_SELECTOR + '.present .fragment:not(.visible)' );
+			if( verticalFragments.length ) {
+				verticalFragments[0].classList.add( 'visible' );
+
+				// Notify subscribers of the change
+				dispatchEvent( 'fragmentshown', { fragment: verticalFragments[0] } );
+				return true;
+			}
+		}
+		// Horizontal slides:
+		else {
+			var horizontalFragments = document.querySelectorAll( HORIZONTAL_SLIDES_SELECTOR + '.present .fragment:not(.visible)' );
+			if( horizontalFragments.length ) {
+				horizontalFragments[0].classList.add( 'visible' );
+
+				// Notify subscribers of the change
+				dispatchEvent( 'fragmentshown', { fragment: horizontalFragments[0] } );
+				return true;
+			}
+		}
+
+		return false;
+	}
+
+	/**
+	 * Navigate to the previous slide fragment.
+	 * 
+	 * @return {Boolean} true if there was a previous fragment,
+	 * false otherwise
+	 */
+	function previousFragment() {
+		// Vertical slides:
+		if( document.querySelector( VERTICAL_SLIDES_SELECTOR + '.present' ) ) {
+			var verticalFragments = document.querySelectorAll( VERTICAL_SLIDES_SELECTOR + '.present .fragment.visible' );
+			if( verticalFragments.length ) {
+				verticalFragments[ verticalFragments.length - 1 ].classList.remove( 'visible' );
+
+				// Notify subscribers of the change
+				dispatchEvent( 'fragmenthidden', { fragment: verticalFragments[ verticalFragments.length - 1 ] } );
+				return true;
+			}
+		}
+		// Horizontal slides:
+		else {
+			var horizontalFragments = document.querySelectorAll( HORIZONTAL_SLIDES_SELECTOR + '.present .fragment.visible' );
+			if( horizontalFragments.length ) {
+				horizontalFragments[ horizontalFragments.length - 1 ].classList.remove( 'visible' );
+
+				// Notify subscribers of the change
+				dispatchEvent( 'fragmenthidden', { fragment: horizontalFragments[ horizontalFragments.length - 1 ] } );
+				return true;
+			}
+		}
+		
+		return false;
+	}
+
+	function cueAutoSlide() {
+		clearTimeout( autoSlideTimeout );
+
+		// Cue the next auto-slide if enabled
+		if( config.autoSlide ) {
+			autoSlideTimeout = setTimeout( navigateNext, config.autoSlide );
+		}
+	}
+	
+	/**
+	 * Triggers a navigation to the specified indices.
+	 * 
+	 * @param {Number} h The horizontal index of the slide to show
+	 * @param {Number} v The vertical index of the slide to show
+	 */
+	function navigateTo( h, v ) {
+		slide( h, v );
+	}
+	
+	function navigateLeft() {
+		// Prioritize hiding fragments
+		if( overviewIsActive() || previousFragment() === false ) {
+			slide( indexh - 1, 0 );
+		}
+	}
+	function navigateRight() {
+		// Prioritize revealing fragments
+		if( overviewIsActive() || nextFragment() === false ) {
+			slide( indexh + 1, 0 );
+		}
+	}
+	function navigateUp() {
+		// Prioritize hiding fragments
+		if( overviewIsActive() || previousFragment() === false ) {
+			slide( indexh, indexv - 1 );
+		}
+	}
+	function navigateDown() {
+		// Prioritize revealing fragments
+		if( overviewIsActive() || nextFragment() === false ) {
+			slide( indexh, indexv + 1 );
+		}
+	}
+
+	/**
+	 * Navigates backwards, prioritized in the following order:
+	 * 1) Previous fragment
+	 * 2) Previous vertical slide
+	 * 3) Previous horizontal slide
+	 */
+	function navigatePrev() {
+		// Prioritize revealing fragments
+		if( previousFragment() === false ) {
+			if( availableRoutes().up ) {
+				navigateUp();
+			}
+			else {
+				// Fetch the previous horizontal slide, if there is one
+				var previousSlide = document.querySelector( '.reveal .slides>section.past:nth-child(' + indexh + ')' );
+
+				if( previousSlide ) {
+					indexv = ( previousSlide.querySelectorAll('section').length + 1 ) || 0;
+					indexh --;
+					slide();
+				}
+			}
+		}
+	}
+
+	/**
+	 * Same as #navigatePrev() but navigates forwards.
+	 */
+	function navigateNext() {
+		// Prioritize revealing fragments
+		if( nextFragment() === false ) {
+			availableRoutes().down ? navigateDown() : navigateRight();
+		}
+
+		// If auto-sliding is enabled we need to cue up 
+		// another timeout
+		cueAutoSlide();
+	}
+
+	/**
+	 * Toggles the slide overview mode on and off.
+	 */
+	function toggleOverview() {
+		if( overviewIsActive() ) {
+			deactivateOverview();
+		}
+		else {
+			activateOverview();
+		}
+	}
+	
+	// Expose some methods publicly
+	return {
+		initialize: initialize,
+		navigateTo: navigateTo,
+		navigateLeft: navigateLeft,
+		navigateRight: navigateRight,
+		navigateUp: navigateUp,
+		navigateDown: navigateDown,
+		navigatePrev: navigatePrev,
+		navigateNext: navigateNext,
+		toggleOverview: toggleOverview,
+
+		addEventListeners: addEventListeners,
+		removeEventListeners: removeEventListeners,
+
+		// Forward event binding to the reveal DOM element
+		addEventListener: function( type, listener, useCapture ) {
+			( dom.wrapper || document.querySelector( '.reveal' ) ).addEventListener( type, listener, useCapture );
+		},
+		removeEventListener: function( type, listener, useCapture ) {
+			( dom.wrapper || document.querySelector( '.reveal' ) ).removeEventListener( type, listener, useCapture );
+		}
+	};
+	
+})();
+

js/slideshow.js

@@ -1,289 +0,0 @@
-/**
- * Copyright (C) 2011 Hakim El Hattab, http://hakim.se
- * 
- * 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.
- */
-
-/**
- * Handles the very minimal navigation logic involved in the 
- * slideshow. Including keyboard navigation, touch interaction 
- * and URL history behavior.
- * 
- * Slides are given unique hash based URL's so that they can be 
- * opened directly. I didn't use the HTML5 History API for this 
- * as it would have required the addition of server side rewrite 
- * rules and hence require more effort for anyone to set up.
- * 
- * This component can be called from other scripts via a tiny API:
- * - Slideshow.navigateTo( indexh, indexv );
- * - Slideshow.navigateLeft();
- * - Slideshow.navigateRight();
- * - Slideshow.navigateUp();
- * - Slideshow.navigateDown();
- * 
- * 
- * version 0.1:
- * - First release
- * 
- * version 0.2:		
- * - Refactored code and added inline documentation
- * - Slides now have unique URL's
- * - A basic API to invoke navigation was added
- * 
- * version 0.3:		
- * - Added licensing terms
- * 
- * version 0.4:
- * - Fixed broken links on touch devices.
- * 
- * 	
- * @author Hakim El Hattab
- * @version 0.4
- */
-var Slideshow = (function(){
-	
-	var indexh = 0,
-		indexv = 0;
-	
-	/**
-	 * Activates the main program logic.
-	 */
-	function initialize() {
-		document.addEventListener('keydown', onDocumentKeyDown, false);
-		document.addEventListener('touchstart', onDocumentTouchStart, false);
-		window.addEventListener('hashchange', onWindowHashChange, false);
-		
-		// Read the initial state of the URL (hash)
-		readURL();
-	}
-	
-	/**
-	 * Handler for the document level 'keydown' event.
-	 * 
-	 * @param {Object} event
-	 */
-	function onDocumentKeyDown( event ) {
-		
-		if( event.keyCode >= 37 && event.keyCode <= 40 ) {
-			
-			switch( event.keyCode ) {
-				case 37: navigateLeft(); break; // left
-				case 39: navigateRight(); break; // right
-				case 38: navigateUp(); break; // up
-				case 40: navigateDown(); break; // down
-			}
-			
-			slide();
-			
-			event.preventDefault();
-			
-		}
-	}
-	
-	/**
-	 * Handler for the document level 'touchstart' event.
-	 * 
-	 * This enables very basic tap interaction for touch
-	 * devices. Added mainly for performance testing of 3D
-	 * transforms on iOS but was so happily surprised with
-	 * how smoothly it runs so I left it in here. Apple +1
-	 * 
-	 * @param {Object} event
-	 */
-	function onDocumentTouchStart( event ) {
-		// We're only interested in one point taps
-		if (event.touches.length === 1) {
-			// Never prevent taps on anchors and images
-			if( event.target.tagName.toLowerCase() === 'a' || event.target.tagName.toLowerCase() === 'img' ) {
-				return;
-			}
-			
-			event.preventDefault();
-			
-			var point = {
-				x: event.touches[0].clientX,
-				y: event.touches[0].clientY
-			};
-			
-			// Define the extent of the areas that may be tapped
-			// to navigate
-			var wt = window.innerWidth * 0.3;
-			var ht = window.innerHeight * 0.3;
-			
-			if( point.x < wt ) {
-				navigateLeft();
-			}
-			else if( point.x > window.innerWidth - wt ) {
-				navigateRight();
-			}
-			else if( point.y < ht ) {
-				navigateUp();
-			}
-			else if( point.y > window.innerHeight - ht ) {
-				navigateDown();
-			}
-			
-			slide();
-			
-		}
-	}
-	
-	
-	/**
-	 * Handler for the window level 'hashchange' event.
-	 * 
-	 * @param {Object} event
-	 */
-	function onWindowHashChange( event ) {
-		readURL();
-	}
-	
-	/**
-	 * Updates one dimension of slides by showing the slide
-	 * with the specified index.
-	 * 
-	 * @param {String} selector A CSS selector that will fetch
-	 * the group of slides we are working with
-	 * @param {Number} index The index of the slide that should be
-	 * shown
-	 * 
-	 * @return {Number} The index of the slide that is now shown,
-	 * might differ from the passed in index if it was out of 
-	 * bounds.
-	 */
-	function updateSlides( selector, index ) {
-		
-		// Select all slides and convert the NodeList result to
-		// an array
-		var slides = Array.prototype.slice.call( document.querySelectorAll( selector ) );
-		
-		if( slides.length ) {
-			// Enforce max and minimum index bounds
-			index = Math.max(Math.min(index, slides.length - 1), 0);
-			
-			slides[index].setAttribute('class', 'present');
-			
-			// Any element previous to index is given the 'past' class
-			slides.slice(0, index).map(function(element){
-				element.setAttribute('class', 'past');
-			});
-			
-			// Any element subsequent to index is given the 'future' class
-			slides.slice(index + 1).map(function(element){
-				element.setAttribute('class', 'future');
-			});
-		}
-		else {
-			// Since there are no slides we can't be anywhere beyond the 
-			// zeroth index
-			index = 0;
-		}
-		
-		return index;
-		
-	}
-	
-	/**
-	 * Updates the visual slides to represent the currently
-	 * set indices. 
-	 */
-	function slide() {
-		indexh = updateSlides( '#main>section', indexh );
-		indexv = updateSlides( 'section.present>section', indexv );
-		
-		writeURL();
-	}
-	
-	/**
-	 * Reads the current URL (hash) and navigates accordingly.
-	 */
-	function readURL() {
-		// Break the hash down to separate components
-		var bits = window.location.hash.slice(2).split('/');
-		
-		// Read the index components of the hash
-		indexh = bits[0] ? parseInt( bits[0] ) : 0;
-		indexv = bits[1] ? parseInt( bits[1] ) : 0;
-		
-		navigateTo( indexh, indexv );
-	}
-	
-	/**
-	 * Updates the page URL (hash) to reflect the current
-	 * navigational state. 
-	 */
-	function writeURL() {
-		var url = '/';
-		
-		// Only include the minimum possible number of components in
-		// the URL
-		if( indexh > 0 || indexv > 0 ) url += indexh
-		if( indexv > 0 ) url += '/' + indexv
-		
-		window.location.hash = url;
-	}
-	
-	/**
-	 * Triggers a navigation to the specified indices.
-	 * 
-	 * @param {Number} h The horizontal index of the slide to show
-	 * @param {Number} v The vertical index of the slide to show
-	 */
-	function navigateTo( h, v ) {
-		indexh = h === undefined ? indexh : h;
-		indexv = v === undefined ? indexv : v;
-		
-		slide();
-	}
-	
-	function navigateLeft() {
-		indexh --;
-		indexv = 0;
-		slide();
-	}
-	function navigateRight() {
-		indexh ++;
-		indexv = 0;
-		slide();
-	}
-	function navigateUp() {
-		indexv --;
-		slide();
-	}
-	function navigateDown() {
-		indexv ++;
-		slide();
-	}
-	
-	// Initialize the program. Done right before returning to ensure
-	// that any inline variable definitions are available to all
-	// functions 
-	initialize();
-	
-	// Expose some methods publicly
-	return {
-		navigateTo: navigateTo,
-		navigateLeft: navigateLeft,
-		navigateRight: navigateRight,
-		navigateUp: navigateUp,
-		navigateDown: navigateDown
-	};
-	
-})();
-

lib/css/zenburn.css

@@ -0,0 +1,115 @@
+/*
+
+Zenburn style from voldmar.ru (c) Vladimir Epifanov <voldmar@voldmar.ru>
+based on dark.css by Ivan Sagalaev
+
+*/
+
+pre code {
+  display: block; padding: 0.5em;
+  background: #3F3F3F;
+  color: #DCDCDC;
+}
+
+pre .keyword,
+pre .tag,
+pre .django .tag,
+pre .django .keyword,
+pre .css .class,
+pre .css .id,
+pre .lisp .title {
+  color: #E3CEAB;
+}
+
+pre .django .template_tag,
+pre .django .variable,
+pre .django .filter .argument {
+  color: #DCDCDC;
+}
+
+pre .number,
+pre .date {
+  color: #8CD0D3;
+}
+
+pre .dos .envvar,
+pre .dos .stream,
+pre .variable,
+pre .apache .sqbracket {
+  color: #EFDCBC;
+}
+
+pre .dos .flow,
+pre .diff .change,
+pre .python .exception,
+pre .python .built_in,
+pre .literal,
+pre .tex .special {
+  color: #EFEFAF;
+}
+
+pre .diff .chunk,
+pre .ruby .subst {
+  color: #8F8F8F;
+}
+
+pre .dos .keyword,
+pre .python .decorator,
+pre .class .title,
+pre .haskell .label,
+pre .function .title,
+pre .ini .title,
+pre .diff .header,
+pre .ruby .class .parent,
+pre .apache .tag,
+pre .nginx .built_in,
+pre .tex .command,
+pre .input_number {
+    color: #efef8f;
+}
+
+pre .dos .winutils,
+pre .ruby .symbol,
+pre .ruby .symbol .string,
+pre .ruby .symbol .keyword,
+pre .ruby .symbol .keymethods,
+pre .ruby .string,
+pre .ruby .instancevar {
+  color: #DCA3A3;
+}
+
+pre .diff .deletion,
+pre .string,
+pre .tag .value,
+pre .preprocessor,
+pre .built_in,
+pre .sql .aggregate,
+pre .javadoc,
+pre .smalltalk .class,
+pre .smalltalk .localvars,
+pre .smalltalk .array,
+pre .css .rules .value,
+pre .attr_selector,
+pre .pseudo,
+pre .apache .cbracket,
+pre .tex .formula {
+  color: #CC9393;
+}
+
+pre .shebang,
+pre .diff .addition,
+pre .comment,
+pre .java .annotation,
+pre .template_comment,
+pre .pi,
+pre .doctype {
+  color: #7F9F7F;
+}
+
+pre .xml .css,
+pre .xml .javascript,
+pre .xml .vbscript,
+pre .tex .formula {
+  opacity: 0.5;
+}
+

lib/js/classList.js

@@ -0,0 +1,2 @@
+/*! @source http://purl.eligrey.com/github/classList.js/blob/master/classList.js*/
+if(typeof document!=="undefined"&&!("classList" in document.createElement("a"))){(function(j){var a="classList",f="prototype",m=(j.HTMLElement||j.Element)[f],b=Object,k=String[f].trim||function(){return this.replace(/^\s+|\s+$/g,"")},c=Array[f].indexOf||function(q){var p=0,o=this.length;for(;p<o;p++){if(p in this&&this[p]===q){return p}}return -1},n=function(o,p){this.name=o;this.code=DOMException[o];this.message=p},g=function(p,o){if(o===""){throw new n("SYNTAX_ERR","An invalid or illegal string was specified")}if(/\s/.test(o)){throw new n("INVALID_CHARACTER_ERR","String contains an invalid character")}return c.call(p,o)},d=function(s){var r=k.call(s.className),q=r?r.split(/\s+/):[],p=0,o=q.length;for(;p<o;p++){this.push(q[p])}this._updateClassName=function(){s.className=this.toString()}},e=d[f]=[],i=function(){return new d(this)};n[f]=Error[f];e.item=function(o){return this[o]||null};e.contains=function(o){o+="";return g(this,o)!==-1};e.add=function(o){o+="";if(g(this,o)===-1){this.push(o);this._updateClassName()}};e.remove=function(p){p+="";var o=g(this,p);if(o!==-1){this.splice(o,1);this._updateClassName()}};e.toggle=function(o){o+="";if(g(this,o)===-1){this.add(o)}else{this.remove(o)}};e.toString=function(){return this.join(" ")};if(b.defineProperty){var l={get:i,enumerable:true,configurable:true};try{b.defineProperty(m,a,l)}catch(h){if(h.number===-2146823252){l.enumerable=false;b.defineProperty(m,a,l)}}}else{if(b[f].__defineGetter__){m.__defineGetter__(a,i)}}}(self))};

lib/js/head.min.js

@@ -0,0 +1,8 @@
+/**
+    Head JS     The only script in your <HEAD>
+    Copyright   Tero Piirainen (tipiirai)
+    License     MIT / http://bit.ly/mit-license
+    Version     0.96
+
+    http://headjs.com
+*/(function(a){function z(){d||(d=!0,s(e,function(a){p(a)}))}function y(c,d){var e=a.createElement("script");e.type="text/"+(c.type||"javascript"),e.src=c.src||c,e.async=!1,e.onreadystatechange=e.onload=function(){var a=e.readyState;!d.done&&(!a||/loaded|complete/.test(a))&&(d.done=!0,d())},(a.body||b).appendChild(e)}function x(a,b){if(a.state==o)return b&&b();if(a.state==n)return k.ready(a.name,b);if(a.state==m)return a.onpreload.push(function(){x(a,b)});a.state=n,y(a.url,function(){a.state=o,b&&b(),s(g[a.name],function(a){p(a)}),u()&&d&&s(g.ALL,function(a){p(a)})})}function w(a,b){a.state===undefined&&(a.state=m,a.onpreload=[],y({src:a.url,type:"cache"},function(){v(a)}))}function v(a){a.state=l,s(a.onpreload,function(a){a.call()})}function u(a){a=a||h;var b;for(var c in a){if(a.hasOwnProperty(c)&&a[c].state!=o)return!1;b=!0}return b}function t(a){return Object.prototype.toString.call(a)=="[object Function]"}function s(a,b){if(!!a){typeof a=="object"&&(a=[].slice.call(a));for(var c=0;c<a.length;c++)b.call(a,a[c],c)}}function r(a){var b;if(typeof a=="object")for(var c in a)a[c]&&(b={name:c,url:a[c]});else b={name:q(a),url:a};var d=h[b.name];if(d&&d.url===b.url)return d;h[b.name]=b;return b}function q(a){var b=a.split("/"),c=b[b.length-1],d=c.indexOf("?");return d!=-1?c.substring(0,d):c}function p(a){a._done||(a(),a._done=1)}var b=a.documentElement,c,d,e=[],f=[],g={},h={},i=a.createElement("script").async===!0||"MozAppearance"in a.documentElement.style||window.opera,j=window.head_conf&&head_conf.head||"head",k=window[j]=window[j]||function(){k.ready.apply(null,arguments)},l=1,m=2,n=3,o=4;i?k.js=function(){var a=arguments,b=a[a.length-1],c={};t(b)||(b=null),s(a,function(d,e){d!=b&&(d=r(d),c[d.name]=d,x(d,b&&e==a.length-2?function(){u(c)&&p(b)}:null))});return k}:k.js=function(){var a=arguments,b=[].slice.call(a,1),d=b[0];if(!c){f.push(function(){k.js.apply(null,a)});return k}d?(s(b,function(a){t(a)||w(r(a))}),x(r(a[0]),t(d)?d:function(){k.js.apply(null,b)})):x(r(a[0]));return k},k.ready=function(b,c){if(b==a){d?p(c):e.push(c);return k}t(b)&&(c=b,b="ALL");if(typeof b!="string"||!t(c))return k;var f=h[b];if(f&&f.state==o||b=="ALL"&&u()&&d){p(c);return k}var i=g[b];i?i.push(c):i=g[b]=[c];return k},k.ready(a,function(){u()&&s(g.ALL,function(a){p(a)}),k.feature&&k.feature("domloaded",!0)});if(window.addEventListener)a.addEventListener("DOMContentLoaded",z,!1),window.addEventListener("load",z,!1);else if(window.attachEvent){a.attachEvent("onreadystatechange",function(){a.readyState==="complete"&&z()});var A=1;try{A=window.frameElement}catch(B){}!A&&b.doScroll&&function(){try{b.doScroll("left"),z()}catch(a){setTimeout(arguments.callee,1);return}}(),window.attachEvent("onload",z)}!a.readyState&&a.addEventListener&&(a.readyState="loading",a.addEventListener("DOMContentLoaded",handler=function(){a.removeEventListener("DOMContentLoaded",handler,!1),a.readyState="complete"},!1)),setTimeout(function(){c=!0,s(f,function(a){a()})},300)})(document)

package.json

@@ -0,0 +1,20 @@
+{
+	"author": "Hakim El Hattab",
+	"name": "reveal.js",
+	"description": "HTML5 Slideware with Presenter Notes",
+	"version": "1.5.0",
+	"repository": {
+		"type": "git",
+		"url": "git://github.com/hakimel/reveal.js.git"
+	},
+	"engines": {
+		"node": "~0.6.8"
+	},
+	"dependencies": {
+		"underscore" : "1.3.3",
+		"express" : "2.5.9",
+		"socket.io" : "0.9.6",
+		"mustache" : "0.4.0"
+	},
+	"devDependencies": {}
+}

plugin/speakernotes/client.js

@@ -0,0 +1,35 @@
+(function() {
+	// don't emit events from inside the previews themselves
+	if ( window.location.search.match( /receiver/gi ) ) { return; }
+
+	var socket = io.connect(window.location.origin);
+	var socketId = Math.random().toString().slice(2);
+	
+	console.log('View slide notes at ' + window.location.origin + '/notes/' + socketId);
+
+	Reveal.addEventListener( 'slidechanged', function( event ) {
+		var nextindexh;
+		var nextindexv;
+		var slideElement = event.currentSlide;
+
+		if (slideElement.nextElementSibling && slideElement.parentNode.nodeName == 'SECTION') {
+			nextindexh = event.indexh;
+			nextindexv = event.indexv + 1;
+		} else {
+			nextindexh = event.indexh + 1;
+			nextindexv = 0;
+		}
+
+		var notes = slideElement.querySelector('aside.notes');
+		var slideData = {
+			notes : notes ? notes.innerHTML : '',
+			indexh : event.indexh,
+			indexv : event.indexv,
+			nextindexh : nextindexh,
+			nextindexv : nextindexv,
+			socketId : socketId
+		};
+
+		socket.emit('slidechanged', slideData);
+	} );
+}());

plugin/speakernotes/index.js

@@ -0,0 +1,55 @@
+var express   = require('express');
+var fs        = require('fs');
+var io        = require('socket.io');
+var _         = require('underscore');
+var Mustache  = require('mustache');
+
+var app       = express.createServer();
+var staticDir = express.static;
+
+io            = io.listen(app);
+
+var opts = {
+	port :      1947,
+	baseDir :   __dirname + '/../../'
+};
+
+io.sockets.on('connection', function(socket) {
+	socket.on('slidechanged', function(slideData) {
+		socket.broadcast.emit('slidedata', slideData);
+	});
+});
+
+app.configure(function() {
+	[ 'css', 'js', 'plugin', 'lib' ].forEach(function(dir) {
+		app.use('/' + dir, staticDir(opts.baseDir + dir));
+	});
+});
+
+app.get("/", function(req, res) {
+	fs.createReadStream(opts.baseDir + '/index.html').pipe(res);
+});
+
+app.get("/notes/:socketId", function(req, res) {
+
+	fs.readFile(opts.baseDir + 'plugin/speakernotes/notes.html', function(err, data) {
+		res.send(Mustache.to_html(data.toString(), {
+			socketId : req.params.socketId
+		}));
+	});
+	// fs.createReadStream(opts.baseDir + 'speakernotes/notes.html').pipe(res);
+});
+
+// Actually listen
+app.listen(opts.port || null);
+
+var brown = '\033[33m', 
+	green = '\033[32m', 
+	reset = '\033[0m';
+
+var slidesLocation = "http://localhost" + ( opts.port ? ( ':' + opts.port ) : '' );
+
+console.log( brown + "reveal.js - Speaker Notes" + reset );
+console.log( "1. Open the slides at " + green + slidesLocation + reset );
+console.log( "2. Click on the link your JS console to go to the notes page" );
+console.log( "3. Advance through your slides and your notes will advance automatically" );

plugin/speakernotes/notes.html

@@ -0,0 +1,109 @@
+<!doctype html>
+<html lang="en">
+	<head>
+		<meta charset="utf-8">
+
+		<title>reveal.js - Slide Notes</title>
+
+		<style>
+			body {
+				font-family: Helvetica;
+			}
+
+			#notes {
+				font-size: 24px;
+				width: 640px;
+				margin-top: 5px;
+			}
+
+			#wrap-current-slide {
+				width: 640px;
+				height: 512px;
+				float: left;
+				overflow: hidden;
+			}
+
+			#current-slide {
+				width: 1280px;
+				height: 1024px;
+				border: none;
+				-moz-transform: scale(0.5);
+				-moz-transform-origin: 0 0;
+				-o-transform: scale(0.5);
+				-o-transform-origin: 0 0;
+				-webkit-transform: scale(0.5);
+				-webkit-transform-origin: 0 0;
+			}
+
+			#wrap-next-slide {
+				width: 320px;
+				height: 256px;
+				float: left;
+				margin: 0 0 0 10px;
+				overflow: hidden;
+			}
+
+			#next-slide {
+				width: 1280px;
+				height: 1024px;
+				border: none;
+				-moz-transform: scale(0.25);
+				-moz-transform-origin: 0 0;
+				-o-transform: scale(0.25);
+				-o-transform-origin: 0 0;
+				-webkit-transform: scale(0.25);
+				-webkit-transform-origin: 0 0;
+			}
+
+			.slides {
+				position: relative;
+				margin-bottom: 10px;
+				border: 1px solid black;
+				border-radius: 2px;
+				background: rgb(28, 30, 32);
+			}
+
+			.slides span {
+				position: absolute;
+				top: 3px;
+				left: 3px;
+				font-weight: bold;
+				font-size: 14px;
+				color: rgba( 255, 255, 255, 0.9 );
+			}
+		</style>
+	</head>
+
+	<body>
+
+		<div id="wrap-current-slide" class="slides">
+			<iframe src="/?receiver" width="1280" height="1024" id="current-slide"></iframe>
+		</div>
+
+		<div id="wrap-next-slide" class="slides">
+			<iframe src="/?receiver" width="640" height="512" id="next-slide"></iframe>
+			<span>UPCOMING:</span>
+		</div>
+		<div id="notes"></div>
+
+		<script src="/socket.io/socket.io.js"></script>
+
+		<script>
+		var socketId = '{{socketId}}';
+		var socket = io.connect(window.location.origin);
+		var notes = document.getElementById('notes');
+		var currentSlide = document.getElementById('current-slide');
+		var nextSlide = document.getElementById('next-slide');
+
+		socket.on('slidedata', function(data) {
+			// ignore data from sockets that aren't ours
+			if (data.socketId !== socketId) { return; }
+
+			notes.innerHTML = data.notes;
+			currentSlide.contentWindow.Reveal.navigateTo(data.indexh, data.indexv);
+			nextSlide.contentWindow.Reveal.navigateTo(data.nextindexh, data.nextindexv);
+		});
+		</script>
+
+	</body>
+</html>