(function( root, factory ) {
if( typeof define === 'function' && define.amd ) {
define( function() {
root.Reveal = factory();
return root.Reveal;
} );
} else if( typeof exports === 'object' ) {
module.exports = factory();
} else {
root.Reveal = factory();
}
}( this, function() {
'use strict';
var Reveal;
var VERSION = '3.6.0';
var SLIDES_SELECTOR = '.slides section',
HORIZONTAL_SLIDES_SELECTOR = '.slides>section',
VERTICAL_SLIDES_SELECTOR = '.slides>section.present>section',
HOME_SLIDE_SELECTOR = '.slides>section:first-of-type',
UA = navigator.userAgent,
config = {
width: 960,
height: 700,
margin: 0.04,
minScale: 0.2,
maxScale: 2.0,
controls: true,
controlsTutorial: true,
controlsLayout: 'bottom-right',
controlsBackArrows: 'faded',
progress: true,
slideNumber: false,
showSlideNumber: 'all',
history: false,
keyboard: true,
keyboardCondition: null,
overview: true,
center: true,
touch: true,
loop: false,
rtl: false,
shuffle: false,
fragments: true,
embedded: false,
help: true,
pause: true,
showNotes: false,
autoPlayMedia: null,
autoSlide: 0,
autoSlideStoppable: true,
autoSlideMethod: null,
mouseWheel: false,
rollingLinks: false,
hideAddressBar: true,
previewLinks: false,
postMessage: true,
postMessageEvents: false,
focusBodyOnPageVisibilityChange: true,
transition: 'slide',
transitionSpeed: 'default',
backgroundTransition: 'fade',
parallaxBackgroundImage: '',
parallaxBackgroundSize: '',
parallaxBackgroundHorizontal: null,
parallaxBackgroundVertical: null,
pdfMaxPagesPerSlide: Number.POSITIVE_INFINITY,
pdfPageHeightOffset: -1,
viewDistance: 3,
display: 'block',
dependencies: []
},
initialized = false,
loaded = false,
overview = false,
overviewSlideWidth = null,
overviewSlideHeight = null,
indexh,
indexv,
previousSlide,
currentSlide,
previousBackground,
hasNavigatedRight = false,
hasNavigatedDown = false,
state = [],
scale = 1,
slidesTransform = { layout: '', overview: '' },
dom = {},
features = {},
isMobileDevice,
isChrome,
lastMouseWheelStep = 0,
writeURLTimeout = 0,
eventsAreBound = false,
autoSlide = 0,
autoSlidePlayer,
autoSlideTimeout = 0,
autoSlideStartTime = -1,
autoSlidePaused = false,
touch = {
startX: 0,
startY: 0,
startSpan: 0,
startCount: 0,
captured: false,
threshold: 40
},
keyboardShortcuts = {
'N , SPACE': 'Next slide',
'P': 'Previous slide',
'← , H': 'Navigate left',
'→ , L': 'Navigate right',
'↑ , K': 'Navigate up',
'↓ , J': 'Navigate down',
'Home': 'First slide',
'End': 'Last slide',
'B , .': 'Pause',
'F': 'Fullscreen',
'ESC, O': 'Slide overview'
};
function initialize( options ) {
if( initialized === true ) return;
initialized = true;
checkCapabilities();
if( !features.transforms2d && !features.transforms3d ) {
document.body.setAttribute( 'class', 'no-transforms' );
var images = toArray( document.getElementsByTagName( 'img' ) ),
iframes = toArray( document.getElementsByTagName( 'iframe' ) );
var lazyLoadable = images.concat( iframes );
for( var i = 0, len = lazyLoadable.length; i < len; i++ ) {
var element = lazyLoadable[i];
if( element.getAttribute( 'data-src' ) ) {
element.setAttribute( 'src', element.getAttribute( 'data-src' ) );
element.removeAttribute( 'data-src' );
}
}
return;
}
dom.wrapper = document.querySelector( '.reveal' );
dom.slides = document.querySelector( '.reveal .slides' );
window.addEventListener( 'load', layout, false );
var query = Reveal.getQueryHash();
if( typeof query['dependencies'] !== 'undefined' ) delete query['dependencies'];
extend( config, options );
extend( config, query );
hideAddressBar();
load();
}
function checkCapabilities() {
isMobileDevice = /(iphone|ipod|ipad|android)/gi.test( UA );
isChrome = /chrome/i.test( UA ) && !/edge/i.test( UA );
var testElement = document.createElement( 'div' );
features.transforms3d = 'WebkitPerspective' in testElement.style ||
'MozPerspective' in testElement.style ||
'msPerspective' in testElement.style ||
'OPerspective' in testElement.style ||
'perspective' in testElement.style;
features.transforms2d = 'WebkitTransform' in testElement.style ||
'MozTransform' in testElement.style ||
'msTransform' in testElement.style ||
'OTransform' in testElement.style ||
'transform' in testElement.style;
features.requestAnimationFrameMethod = window.requestAnimationFrame || window.webkitRequestAnimationFrame || window.mozRequestAnimationFrame;
features.requestAnimationFrame = typeof features.requestAnimationFrameMethod === 'function';
features.canvas = !!document.createElement( 'canvas' ).getContext;
features.overviewTransitions = !/Version\/[\d\.]+.*Safari/.test( UA );
features.zoom = 'zoom' in testElement.style && !isMobileDevice &&
( isChrome || /Version\/[\d\.]+.*Safari/.test( UA ) );
}
function load() {
var scripts = [],
scriptsAsync = [],
scriptsToPreload = 0;
function proceed() {
if( scriptsAsync.length ) {
head.js.apply( null, scriptsAsync );
}
start();
}
function loadScript( s ) {
head.ready( s.src.match( /([\w\d_\-]*)\.?js$|[^\\\/]*$/i )[0], function() {
if( typeof s.callback === 'function' ) {
s.callback.apply( this );
}
if( --scriptsToPreload === 0 ) {
proceed();
}
});
}
for( var i = 0, len = config.dependencies.length; i < len; i++ ) {
var s = config.dependencies[i];
if( !s.condition || s.condition() ) {
if( s.async ) {
scriptsAsync.push( s.src );
}
else {
scripts.push( s.src );
}
loadScript( s );
}
}
if( scripts.length ) {
scriptsToPreload = scripts.length;
head.js.apply( null, scripts );
}
else {
proceed();
}
}
function start() {
loaded = true;
setupDOM();
setupPostMessage();
setupScrollPrevention();
resetVerticalSlides();
configure();
readURL();
updateBackground( true );
setTimeout( function() {
dom.slides.classList.remove( 'no-transition' );
dom.wrapper.classList.add( 'ready' );
dispatchEvent( 'ready', {
'indexh': indexh,
'indexv': indexv,
'currentSlide': currentSlide
} );
}, 1 );
if( isPrintingPDF() ) {
removeEventListeners();
if( document.readyState === 'complete' ) {
setupPDF();
}
else {
window.addEventListener( 'load', setupPDF );
}
}
}
function setupDOM() {
dom.slides.classList.add( 'no-transition' );
if( isMobileDevice ) {
dom.wrapper.classList.add( 'no-hover' );
}
else {
dom.wrapper.classList.remove( 'no-hover' );
}
if( /iphone/gi.test( UA ) ) {
dom.wrapper.classList.add( 'ua-iphone' );
}
else {
dom.wrapper.classList.remove( 'ua-iphone' );
}
dom.background = createSingletonNode( dom.wrapper, 'div', 'backgrounds', null );
dom.progress = createSingletonNode( dom.wrapper, 'div', 'progress', '<span></span>' );
dom.progressbar = dom.progress.querySelector( 'span' );
dom.controls = createSingletonNode( dom.wrapper, 'aside', 'controls',
'<button class="navigate-left" aria-label="previous slide"><div class="controls-arrow"></div></button>' +
'<button class="navigate-right" aria-label="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>' );
dom.slideNumber = createSingletonNode( dom.wrapper, 'div', 'slide-number', '' );
dom.speakerNotes = createSingletonNode( dom.wrapper, 'div', 'speaker-notes', null );
dom.speakerNotes.setAttribute( 'data-prevent-swipe', '' );
dom.speakerNotes.setAttribute( 'tabindex', '0' );
createSingletonNode( dom.wrapper, 'div', 'pause-overlay', null );
dom.wrapper.setAttribute( 'role', 'application' );
dom.controlsLeft = toArray( document.querySelectorAll( '.navigate-left' ) );
dom.controlsRight = toArray( document.querySelectorAll( '.navigate-right' ) );
dom.controlsUp = toArray( document.querySelectorAll( '.navigate-up' ) );
dom.controlsDown = toArray( document.querySelectorAll( '.navigate-down' ) );
dom.controlsPrev = toArray( document.querySelectorAll( '.navigate-prev' ) );
dom.controlsNext = toArray( document.querySelectorAll( '.navigate-next' ) );
dom.controlsRightArrow = dom.controls.querySelector( '.navigate-right' );
dom.controlsDownArrow = dom.controls.querySelector( '.navigate-down' );
dom.statusDiv = createStatusDiv();
}
function createStatusDiv() {
var statusDiv = document.getElementById( 'aria-status-div' );
if( !statusDiv ) {
statusDiv = document.createElement( 'div' );
statusDiv.style.position = 'absolute';
statusDiv.style.height = '1px';
statusDiv.style.width = '1px';
statusDiv.style.overflow = 'hidden';
statusDiv.style.clip = 'rect( 1px, 1px, 1px, 1px )';
statusDiv.setAttribute( 'id', 'aria-status-div' );
statusDiv.setAttribute( 'aria-live', 'polite' );
statusDiv.setAttribute( 'aria-atomic','true' );
dom.wrapper.appendChild( statusDiv );
}
return statusDiv;
}
function getStatusText( node ) {
var text = '';
if( node.nodeType === 3 ) {
text += node.textContent;
}
else if( node.nodeType === 1 ) {
var isAriaHidden = node.getAttribute( 'aria-hidden' );
var isDisplayHidden = window.getComputedStyle( node )['display'] === 'none';
if( isAriaHidden !== 'true' && !isDisplayHidden ) {
toArray( node.childNodes ).forEach( function( child ) {
text += getStatusText( child );
} );
}
}
return text;
}
function setupPDF() {
var slideSize = getComputedSlideSize( window.innerWidth, window.innerHeight );
var pageWidth = Math.floor( slideSize.width * ( 1 + config.margin ) ),
pageHeight = Math.floor( slideSize.height * ( 1 + config.margin ) );
var slideWidth = slideSize.width,
slideHeight = slideSize.height;
injectStyleSheet( '@page{size:'+ pageWidth +'px '+ pageHeight +'px; margin: 0px;}' );
injectStyleSheet( '.reveal section>img, .reveal section>video, .reveal section>iframe{max-width: '+ slideWidth +'px; max-height:'+ slideHeight +'px}' );
document.body.classList.add( 'print-pdf' );
document.body.style.width = pageWidth + 'px';
document.body.style.height = pageHeight + 'px';
layoutSlideContents( slideWidth, slideHeight );
toArray( dom.wrapper.querySelectorAll( HORIZONTAL_SLIDES_SELECTOR ) ).forEach( function( hslide, h ) {
hslide.setAttribute( 'data-index-h', h );
if( hslide.classList.contains( 'stack' ) ) {
toArray( hslide.querySelectorAll( 'section' ) ).forEach( function( vslide, v ) {
vslide.setAttribute( 'data-index-h', h );
vslide.setAttribute( 'data-index-v', v );
} );
}
} );
toArray( dom.wrapper.querySelectorAll( SLIDES_SELECTOR ) ).forEach( function( slide ) {
if( slide.classList.contains( 'stack' ) === false ) {
var left = ( pageWidth - slideWidth ) / 2,
top = ( pageHeight - slideHeight ) / 2;
var contentHeight = slide.scrollHeight;
var numberOfPages = Math.max( Math.ceil( contentHeight / pageHeight ), 1 );
numberOfPages = Math.min( numberOfPages, config.pdfMaxPagesPerSlide );
if( numberOfPages === 1 && config.center || slide.classList.contains( 'center' ) ) {
top = Math.max( ( pageHeight - contentHeight ) / 2, 0 );
}
var page = document.createElement( 'div' );
page.className = 'pdf-page';
page.style.height = ( ( pageHeight + config.pdfPageHeightOffset ) * numberOfPages ) + 'px';
slide.parentNode.insertBefore( page, slide );
page.appendChild( slide );
slide.style.left = left + 'px';
slide.style.top = top + 'px';
slide.style.width = slideWidth + 'px';
if( slide.slideBackgroundElement ) {
page.insertBefore( slide.slideBackgroundElement, slide );
}
if( config.showNotes ) {
var notes = getSlideNotes( slide );
if( notes ) {
var notesSpacing = 8;
var notesLayout = typeof config.showNotes === 'string' ? config.showNotes : 'inline';
var 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' ) {
page.parentNode.insertBefore( notesElement, page.nextSibling );
}
else {
notesElement.style.left = notesSpacing + 'px';
notesElement.style.bottom = notesSpacing + 'px';
notesElement.style.width = ( pageWidth - notesSpacing*2 ) + 'px';
page.appendChild( notesElement );
}
}
}
if( config.slideNumber && /all|print/i.test( config.showSlideNumber ) ) {
var slideNumberH = parseInt( slide.getAttribute( 'data-index-h' ), 10 ) + 1,
slideNumberV = parseInt( slide.getAttribute( 'data-index-v' ), 10 ) + 1;
var numberElement = document.createElement( 'div' );
numberElement.classList.add( 'slide-number' );
numberElement.classList.add( 'slide-number-pdf' );
numberElement.innerHTML = formatSlideNumber( slideNumberH, '.', slideNumberV );
page.appendChild( numberElement );
}
}
} );
toArray( dom.wrapper.querySelectorAll( SLIDES_SELECTOR + ' .fragment' ) ).forEach( function( fragment ) {
fragment.classList.add( 'visible' );
} );
dispatchEvent( 'pdf-ready' );
}
function setupScrollPrevention() {
setInterval( function() {
if( dom.wrapper.scrollTop !== 0 || dom.wrapper.scrollLeft !== 0 ) {
dom.wrapper.scrollTop = 0;
dom.wrapper.scrollLeft = 0;
}
}, 1000 );
}
function createSingletonNode( container, tagname, classname, innerHTML ) {
var nodes = container.querySelectorAll( '.' + classname );
for( var i = 0; i < nodes.length; i++ ) {
var testNode = nodes[i];
if( testNode.parentNode === container ) {
return testNode;
}
}
var node = document.createElement( tagname );
node.className = classname;
if( typeof innerHTML === 'string' ) {
node.innerHTML = innerHTML;
}
container.appendChild( node );
return node;
}
function createBackgrounds() {
var printMode = isPrintingPDF();
dom.background.innerHTML = '';
dom.background.classList.add( 'no-transition' );
toArray( dom.wrapper.querySelectorAll( HORIZONTAL_SLIDES_SELECTOR ) ).forEach( function( slideh ) {
var backgroundStack = createBackground( slideh, dom.background );
toArray( slideh.querySelectorAll( 'section' ) ).forEach( function( slidev ) {
createBackground( slidev, backgroundStack );
backgroundStack.classList.add( 'stack' );
} );
} );
if( config.parallaxBackgroundImage ) {
dom.background.style.backgroundImage = 'url("' + config.parallaxBackgroundImage + '")';
dom.background.style.backgroundSize = config.parallaxBackgroundSize;
setTimeout( function() {
dom.wrapper.classList.add( 'has-parallax-background' );
}, 1 );
}
else {
dom.background.style.backgroundImage = '';
dom.wrapper.classList.remove( 'has-parallax-background' );
}
}
function createBackground( slide, container ) {
var 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' ),
backgroundRepeat: slide.getAttribute( 'data-background-repeat' ),
backgroundPosition: slide.getAttribute( 'data-background-position' ),
backgroundTransition: slide.getAttribute( 'data-background-transition' )
};
var element = document.createElement( 'div' );
element.className = 'slide-background ' + slide.className.replace( /present|past|future/, '' );
if( data.background ) {
if( /^(http|file|\/\/)/gi.test( data.background ) || /\.(svg|png|jpg|jpeg|gif|bmp)([?#]|$)/gi.test( data.background ) ) {
slide.setAttribute( 'data-background-image', data.background );
}
else {
element.style.background = data.background;
}
}
if( data.background || data.backgroundColor || data.backgroundImage || data.backgroundVideo || data.backgroundIframe ) {
element.setAttribute( 'data-background-hash', data.background +
data.backgroundSize +
data.backgroundImage +
data.backgroundVideo +
data.backgroundIframe +
data.backgroundColor +
data.backgroundRepeat +
data.backgroundPosition +
data.backgroundTransition );
}
if( data.backgroundSize ) element.style.backgroundSize = data.backgroundSize;
if( data.backgroundSize ) element.setAttribute( 'data-background-size', data.backgroundSize );
if( data.backgroundColor ) element.style.backgroundColor = data.backgroundColor;
if( data.backgroundRepeat ) element.style.backgroundRepeat = data.backgroundRepeat;
if( data.backgroundPosition ) element.style.backgroundPosition = data.backgroundPosition;
if( data.backgroundTransition ) element.setAttribute( 'data-background-transition', data.backgroundTransition );
container.appendChild( element );
slide.classList.remove( 'has-dark-background' );
slide.classList.remove( 'has-light-background' );
slide.slideBackgroundElement = element;
var computedBackgroundStyle = window.getComputedStyle( element );
if( computedBackgroundStyle && computedBackgroundStyle.backgroundColor ) {
var rgb = colorToRgb( computedBackgroundStyle.backgroundColor );
if( rgb && rgb.a !== 0 ) {
if( colorBrightness( computedBackgroundStyle.backgroundColor ) < 128 ) {
slide.classList.add( 'has-dark-background' );
}
else {
slide.classList.add( 'has-light-background' );
}
}
}
return element;
}
function setupPostMessage() {
if( config.postMessage ) {
window.addEventListener( 'message', function ( event ) {
var data = event.data;
if( typeof data === 'string' && data.charAt( 0 ) === '{' && data.charAt( data.length - 1 ) === '}' ) {
data = JSON.parse( data );
if( data.method && typeof Reveal[data.method] === 'function' ) {
Reveal[data.method].apply( Reveal, data.args );
}
}
}, false );
}
}
function configure( options ) {
var oldTransition = config.transition;
if( typeof options === 'object' ) extend( config, options );
if( loaded === false ) return;
var numberOfSlides = dom.wrapper.querySelectorAll( SLIDES_SELECTOR ).length;
dom.wrapper.classList.remove( oldTransition );
if( features.transforms3d === false ) config.transition = 'linear';
dom.wrapper.classList.add( config.transition );
dom.wrapper.setAttribute( 'data-transition-speed', config.transitionSpeed );
dom.wrapper.setAttribute( 'data-background-transition', config.backgroundTransition );
dom.controls.style.display = config.controls ? 'block' : 'none';
dom.progress.style.display = config.progress ? 'block' : 'none';
dom.controls.setAttribute( 'data-controls-layout', config.controlsLayout );
dom.controls.setAttribute( 'data-controls-back-arrows', config.controlsBackArrows );
if( config.shuffle ) {
shuffle();
}
if( config.rtl ) {
dom.wrapper.classList.add( 'rtl' );
}
else {
dom.wrapper.classList.remove( 'rtl' );
}
if( config.center ) {
dom.wrapper.classList.add( 'center' );
}
else {
dom.wrapper.classList.remove( 'center' );
}
if( config.pause === false ) {
resume();
}
if( config.showNotes ) {
dom.speakerNotes.setAttribute( 'data-layout', typeof config.showNotes === 'string' ? config.showNotes : 'inline' );
}
if( config.mouseWheel ) {
document.addEventListener( 'DOMMouseScroll', onDocumentMouseScroll, false );
document.addEventListener( 'mousewheel', onDocumentMouseScroll, false );
}
else {
document.removeEventListener( 'DOMMouseScroll', onDocumentMouseScroll, false );
document.removeEventListener( 'mousewheel', onDocumentMouseScroll, false );
}
if( config.rollingLinks ) {
enableRollingLinks();
}
else {
disableRollingLinks();
}
if( config.previewLinks ) {
enablePreviewLinks();
disablePreviewLinks( '[data-preview-link=false]' );
}
else {
disablePreviewLinks();
enablePreviewLinks( '[data-preview-link]:not([data-preview-link=false])' );
}
if( autoSlidePlayer ) {
autoSlidePlayer.destroy();
autoSlidePlayer = null;
}
if( numberOfSlides > 1 && config.autoSlide && config.autoSlideStoppable && features.canvas && features.requestAnimationFrame ) {
autoSlidePlayer = new Playback( dom.wrapper, function() {
return Math.min( Math.max( ( Date.now() - autoSlideStartTime ) / autoSlide, 0 ), 1 );
} );
autoSlidePlayer.on( 'click', onAutoSlidePlayerClick );
autoSlidePaused = false;
}
if( config.fragments === false ) {
toArray( dom.slides.querySelectorAll( '.fragment' ) ).forEach( function( element ) {
element.classList.add( 'visible' );
element.classList.remove( 'current-fragment' );
} );
}
var slideNumberDisplay = 'none';
if( config.slideNumber && !isPrintingPDF() ) {
if( config.showSlideNumber === 'all' ) {
slideNumberDisplay = 'block';
}
else if( config.showSlideNumber === 'speaker' && isSpeakerNotes() ) {
slideNumberDisplay = 'block';
}
}
dom.slideNumber.style.display = slideNumberDisplay;
sync();
}
function addEventListeners() {
eventsAreBound = true;
window.addEventListener( 'hashchange', onWindowHashChange, false );
window.addEventListener( 'resize', onWindowResize, false );
if( config.touch ) {
dom.wrapper.addEventListener( 'touchstart', onTouchStart, false );
dom.wrapper.addEventListener( 'touchmove', onTouchMove, false );
dom.wrapper.addEventListener( 'touchend', onTouchEnd, false );
if( window.navigator.pointerEnabled ) {
dom.wrapper.addEventListener( 'pointerdown', onPointerDown, false );
dom.wrapper.addEventListener( 'pointermove', onPointerMove, false );
dom.wrapper.addEventListener( 'pointerup', onPointerUp, false );
}
else if( window.navigator.msPointerEnabled ) {
dom.wrapper.addEventListener( 'MSPointerDown', onPointerDown, false );
dom.wrapper.addEventListener( 'MSPointerMove', onPointerMove, false );
dom.wrapper.addEventListener( 'MSPointerUp', onPointerUp, false );
}
}
if( config.keyboard ) {
document.addEventListener( 'keydown', onDocumentKeyDown, false );
document.addEventListener( 'keypress', onDocumentKeyPress, false );
}
if( config.progress && dom.progress ) {
dom.progress.addEventListener( 'click', onProgressClicked, false );
}
if( config.focusBodyOnPageVisibilityChange ) {
var visibilityChange;
if( 'hidden' in document ) {
visibilityChange = 'visibilitychange';
}
else if( 'msHidden' in document ) {
visibilityChange = 'msvisibilitychange';
}
else if( 'webkitHidden' in document ) {
visibilityChange = 'webkitvisibilitychange';
}
if( visibilityChange ) {
document.addEventListener( visibilityChange, onPageVisibilityChange, false );
}
}
var pointerEvents = [ 'touchstart', 'click' ];
if( UA.match( /android/gi ) ) {
pointerEvents = [ 'touchstart' ];
}
pointerEvents.forEach( function( eventName ) {
dom.controlsLeft.forEach( function( el ) { el.addEventListener( eventName, onNavigateLeftClicked, false ); } );
dom.controlsRight.forEach( function( el ) { el.addEventListener( eventName, onNavigateRightClicked, false ); } );
dom.controlsUp.forEach( function( el ) { el.addEventListener( eventName, onNavigateUpClicked, false ); } );
dom.controlsDown.forEach( function( el ) { el.addEventListener( eventName, onNavigateDownClicked, false ); } );
dom.controlsPrev.forEach( function( el ) { el.addEventListener( eventName, onNavigatePrevClicked, false ); } );
dom.controlsNext.forEach( function( el ) { el.addEventListener( eventName, onNavigateNextClicked, false ); } );
} );
}
function removeEventListeners() {
eventsAreBound = false;
document.removeEventListener( 'keydown', onDocumentKeyDown, false );
document.removeEventListener( 'keypress', onDocumentKeyPress, false );
window.removeEventListener( 'hashchange', onWindowHashChange, false );
window.removeEventListener( 'resize', onWindowResize, false );
dom.wrapper.removeEventListener( 'touchstart', onTouchStart, false );
dom.wrapper.removeEventListener( 'touchmove', onTouchMove, false );
dom.wrapper.removeEventListener( 'touchend', onTouchEnd, false );
if( window.navigator.pointerEnabled ) {
dom.wrapper.removeEventListener( 'pointerdown', onPointerDown, false );
dom.wrapper.removeEventListener( 'pointermove', onPointerMove, false );
dom.wrapper.removeEventListener( 'pointerup', onPointerUp, false );
}
else if( window.navigator.msPointerEnabled ) {
dom.wrapper.removeEventListener( 'MSPointerDown', onPointerDown, false );
dom.wrapper.removeEventListener( 'MSPointerMove', onPointerMove, false );
dom.wrapper.removeEventListener( 'MSPointerUp', onPointerUp, false );
}
if ( config.progress && dom.progress ) {
dom.progress.removeEventListener( 'click', onProgressClicked, false );
}
[ 'touchstart', 'click' ].forEach( function( eventName ) {
dom.controlsLeft.forEach( function( el ) { el.removeEventListener( eventName, onNavigateLeftClicked, false ); } );
dom.controlsRight.forEach( function( el ) { el.removeEventListener( eventName, onNavigateRightClicked, false ); } );
dom.controlsUp.forEach( function( el ) { el.removeEventListener( eventName, onNavigateUpClicked, false ); } );
dom.controlsDown.forEach( function( el ) { el.removeEventListener( eventName, onNavigateDownClicked, false ); } );
dom.controlsPrev.forEach( function( el ) { el.removeEventListener( eventName, onNavigatePrevClicked, false ); } );
dom.controlsNext.forEach( function( el ) { el.removeEventListener( eventName, onNavigateNextClicked, false ); } );
} );
}
function extend( a, b ) {
for( var i in b ) {
a[ i ] = b[ i ];
}
return a;
}
function toArray( o ) {
return Array.prototype.slice.call( o );
}
function 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;
}
function distanceBetween( a, b ) {
var dx = a.x - b.x,
dy = a.y - b.y;
return Math.sqrt( dx*dx + dy*dy );
}
function transformElement( element, transform ) {
element.style.WebkitTransform = transform;
element.style.MozTransform = transform;
element.style.msTransform = transform;
element.style.transform = transform;
}
function transformSlides( transforms ) {
if( typeof transforms.layout === 'string' ) slidesTransform.layout = transforms.layout;
if( typeof transforms.overview === 'string' ) slidesTransform.overview = transforms.overview;
if( slidesTransform.layout ) {
transformElement( dom.slides, slidesTransform.layout + ' ' + slidesTransform.overview );
}
else {
transformElement( dom.slides, slidesTransform.overview );
}
}
function injectStyleSheet( value ) {
var tag = document.createElement( 'style' );
tag.type = 'text/css';
if( tag.styleSheet ) {
tag.styleSheet.cssText = value;
}
else {
tag.appendChild( document.createTextNode( value ) );
}
document.getElementsByTagName( 'head' )[0].appendChild( tag );
}
function closestParent( target, selector ) {
var parent = target.parentNode;
while( parent ) {
var matchesMethod = parent.matches || parent.matchesSelector || parent.msMatchesSelector;
if( matchesMethod && matchesMethod.call( parent, selector ) ) {
return parent;
}
parent = parent.parentNode;
}
return null;
}
function colorToRgb( color ) {
var hex3 = color.match( /^#([0-9a-f]{3})$/i );
if( hex3 && hex3[1] ) {
hex3 = hex3[1];
return {
r: parseInt( hex3.charAt( 0 ), 16 ) * 0x11,
g: parseInt( hex3.charAt( 1 ), 16 ) * 0x11,
b: parseInt( hex3.charAt( 2 ), 16 ) * 0x11
};
}
var hex6 = color.match( /^#([0-9a-f]{6})$/i );
if( hex6 && hex6[1] ) {
hex6 = hex6[1];
return {
r: parseInt( hex6.substr( 0, 2 ), 16 ),
g: parseInt( hex6.substr( 2, 2 ), 16 ),
b: parseInt( hex6.substr( 4, 2 ), 16 )
};
}
var 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 )
};
}
var 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;
}
function colorBrightness( color ) {
if( typeof color === 'string' ) color = colorToRgb( color );
if( color ) {
return ( color.r * 299 + color.g * 587 + color.b * 114 ) / 1000;
}
return null;
}
function getRemainingHeight( element, height ) {
height = height || 0;
if( element ) {
var newHeight, oldHeight = element.style.height;
element.style.height = '0px';
newHeight = height - element.parentNode.offsetHeight;
element.style.height = oldHeight + 'px';
return newHeight;
}
return height;
}
function isPrintingPDF() {
return ( /print-pdf/gi ).test( window.location.search );
}
function hideAddressBar() {
if( config.hideAddressBar && isMobileDevice ) {
window.addEventListener( 'load', removeAddressBar, false );
window.addEventListener( 'orientationchange', removeAddressBar, false );
}
}
function removeAddressBar() {
setTimeout( function() {
window.scrollTo( 0, 1 );
}, 10 );
}
function dispatchEvent( type, args ) {
var event = document.createEvent( 'HTMLEvents', 1, 2 );
event.initEvent( type, true, true );
extend( event, args );
dom.wrapper.dispatchEvent( event );
if( config.postMessageEvents && window.parent !== window.self ) {
window.parent.postMessage( JSON.stringify({ namespace: 'reveal', eventName: type, state: getState() }), '*' );
}
}
function enableRollingLinks() {
if( features.transforms3d && !( 'msPerspective' in document.body.style ) ) {
var anchors = dom.wrapper.querySelectorAll( SLIDES_SELECTOR + ' a' );
for( var i = 0, len = anchors.length; i < len; i++ ) {
var anchor = anchors[i];
if( anchor.textContent && !anchor.querySelector( '*' ) && ( !anchor.className || !anchor.classList.contains( anchor, 'roll' ) ) ) {
var span = document.createElement('span');
span.setAttribute('data-title', anchor.text);
span.innerHTML = anchor.innerHTML;
anchor.classList.add( 'roll' );
anchor.innerHTML = '';
anchor.appendChild(span);
}
}
}
}
function disableRollingLinks() {
var anchors = dom.wrapper.querySelectorAll( SLIDES_SELECTOR + ' a.roll' );
for( var i = 0, len = anchors.length; i < len; i++ ) {
var anchor = anchors[i];
var span = anchor.querySelector( 'span' );
if( span ) {
anchor.classList.remove( 'roll' );
anchor.innerHTML = span.innerHTML;
}
}
}
function enablePreviewLinks( selector ) {
var anchors = toArray( document.querySelectorAll( selector ? selector : 'a' ) );
anchors.forEach( function( element ) {
if( /^(http|www)/gi.test( element.getAttribute( 'href' ) ) ) {
element.addEventListener( 'click', onPreviewLinkClicked, false );
}
} );
}
function disablePreviewLinks( selector ) {
var anchors = toArray( document.querySelectorAll( selector ? selector : 'a' ) );
anchors.forEach( function( element ) {
if( /^(http|www)/gi.test( element.getAttribute( 'href' ) ) ) {
element.removeEventListener( 'click', onPreviewLinkClicked, false );
}
} );
}
function showPreview( url ) {
closeOverlay();
dom.overlay = document.createElement( 'div' );
dom.overlay.classList.add( 'overlay' );
dom.overlay.classList.add( 'overlay-preview' );
dom.wrapper.appendChild( dom.overlay );
dom.overlay.innerHTML = [
'<header>',
'<a class="close" href="#"><span class="icon"></span></a>',
'<a class="external" href="'+ url +'" target="_blank"><span class="icon"></span></a>',
'</header>',
'<div class="spinner"></div>',
'<div class="viewport">',
'<iframe src="'+ url +'"></iframe>',
'<small class="viewport-inner">',
'<span class="x-frame-error">Unable to load iframe. This is likely due to the site\'s policy (x-frame-options).</span>',
'</small>',
'</div>'
].join('');
dom.overlay.querySelector( 'iframe' ).addEventListener( 'load', function( event ) {
dom.overlay.classList.add( 'loaded' );
}, false );
dom.overlay.querySelector( '.close' ).addEventListener( 'click', function( event ) {
closeOverlay();
event.preventDefault();
}, false );
dom.overlay.querySelector( '.external' ).addEventListener( 'click', function( event ) {
closeOverlay();
}, false );
setTimeout( function() {
dom.overlay.classList.add( 'visible' );
}, 1 );
}
function toggleHelp( override ){
if( typeof override === 'boolean' ) {
override ? showHelp() : closeOverlay();
}
else {
if( dom.overlay ) {
closeOverlay();
}
else {
showHelp();
}
}
}
function showHelp() {
if( config.help ) {
closeOverlay();
dom.overlay = document.createElement( 'div' );
dom.overlay.classList.add( 'overlay' );
dom.overlay.classList.add( 'overlay-help' );
dom.wrapper.appendChild( dom.overlay );
var html = '<p class="title">Keyboard Shortcuts</p><br/>';
html += '<table><th>KEY</th><th>ACTION</th>';
for( var key in keyboardShortcuts ) {
html += '<tr><td>' + key + '</td><td>' + keyboardShortcuts[ key ] + '</td></tr>';
}
html += '</table>';
dom.overlay.innerHTML = [
'<header>',
'<a class="close" href="#"><span class="icon"></span></a>',
'</header>',
'<div class="viewport">',
'<div class="viewport-inner">'+ html +'</div>',
'</div>'
].join('');
dom.overlay.querySelector( '.close' ).addEventListener( 'click', function( event ) {
closeOverlay();
event.preventDefault();
}, false );
setTimeout( function() {
dom.overlay.classList.add( 'visible' );
}, 1 );
}
}
function closeOverlay() {
if( dom.overlay ) {
dom.overlay.parentNode.removeChild( dom.overlay );
dom.overlay = null;
}
}
function layout() {
if( dom.wrapper && !isPrintingPDF() ) {
var size = getComputedSlideSize();
layoutSlideContents( config.width, config.height );
dom.slides.style.width = size.width + 'px';
dom.slides.style.height = size.height + 'px';
scale = Math.min( size.presentationWidth / size.width, size.presentationHeight / size.height );
scale = Math.max( scale, config.minScale );
scale = Math.min( scale, config.maxScale );
if( scale === 1 ) {
dom.slides.style.zoom = '';
dom.slides.style.left = '';
dom.slides.style.top = '';
dom.slides.style.bottom = '';
dom.slides.style.right = '';
transformSlides( { layout: '' } );
}
else {
if( scale > 1 && features.zoom ) {
dom.slides.style.zoom = scale;
dom.slides.style.left = '';
dom.slides.style.top = '';
dom.slides.style.bottom = '';
dom.slides.style.right = '';
transformSlides( { layout: '' } );
}
else {
dom.slides.style.zoom = '';
dom.slides.style.left = '50%';
dom.slides.style.top = '50%';
dom.slides.style.bottom = 'auto';
dom.slides.style.right = 'auto';
transformSlides( { layout: 'translate(-50%, -50%) scale('+ scale +')' } );
}
}
var slides = toArray( dom.wrapper.querySelectorAll( SLIDES_SELECTOR ) );
for( var i = 0, len = slides.length; i < len; i++ ) {
var slide = slides[ i ];
if( slide.style.display === 'none' ) {
continue;
}
if( config.center || slide.classList.contains( 'center' ) ) {
if( slide.classList.contains( 'stack' ) ) {
slide.style.top = 0;
}
else {
slide.style.top = Math.max( ( size.height - slide.scrollHeight ) / 2, 0 ) + 'px';
}
}
else {
slide.style.top = '';
}
}
updateProgress();
updateParallax();
if( isOverview() ) {
updateOverview();
}
}
}
function layoutSlideContents( width, height ) {
toArray( dom.slides.querySelectorAll( 'section > .stretch' ) ).forEach( function( element ) {
var remainingHeight = getRemainingHeight( element, height );
if( /(img|video)/gi.test( element.nodeName ) ) {
var nw = element.naturalWidth || element.videoWidth,
nh = element.naturalHeight || element.videoHeight;
var es = Math.min( width / nw, remainingHeight / nh );
element.style.width = ( nw * es ) + 'px';
element.style.height = ( nh * es ) + 'px';
}
else {
element.style.width = width + 'px';
element.style.height = remainingHeight + 'px';
}
} );
}
function getComputedSlideSize( presentationWidth, presentationHeight ) {
var size = {
width: config.width,
height: config.height,
presentationWidth: presentationWidth || dom.wrapper.offsetWidth,
presentationHeight: presentationHeight || dom.wrapper.offsetHeight
};
size.presentationWidth -= ( size.presentationWidth * config.margin );
size.presentationHeight -= ( size.presentationHeight * config.margin );
if( typeof size.width === 'string' && /%$/.test( size.width ) ) {
size.width = parseInt( size.width, 10 ) / 100 * size.presentationWidth;
}
if( typeof size.height === 'string' && /%$/.test( size.height ) ) {
size.height = parseInt( size.height, 10 ) / 100 * size.presentationHeight;
}
return size;
}
function setPreviousVerticalIndex( stack, v ) {
if( typeof stack === 'object' && typeof stack.setAttribute === 'function' ) {
stack.setAttribute( 'data-previous-indexv', v || 0 );
}
}
function getPreviousVerticalIndex( stack ) {
if( typeof stack === 'object' && typeof stack.setAttribute === 'function' && stack.classList.contains( 'stack' ) ) {
var attributeName = stack.hasAttribute( 'data-start-indexv' ) ? 'data-start-indexv' : 'data-previous-indexv';
return parseInt( stack.getAttribute( attributeName ) || 0, 10 );
}
return 0;
}
function activateOverview() {
if( config.overview && !isOverview() ) {
overview = true;
dom.wrapper.classList.add( 'overview' );
dom.wrapper.classList.remove( 'overview-deactivating' );
if( features.overviewTransitions ) {
setTimeout( function() {
dom.wrapper.classList.add( 'overview-animated' );
}, 1 );
}
cancelAutoSlide();
dom.slides.appendChild( dom.background );
toArray( dom.wrapper.querySelectorAll( SLIDES_SELECTOR ) ).forEach( function( slide ) {
if( !slide.classList.contains( 'stack' ) ) {
slide.addEventListener( 'click', onOverviewSlideClicked, true );
}
} );
var margin = 70;
var slideSize = getComputedSlideSize();
overviewSlideWidth = slideSize.width + margin;
overviewSlideHeight = slideSize.height + margin;
if( config.rtl ) {
overviewSlideWidth = -overviewSlideWidth;
}
updateSlidesVisibility();
layoutOverview();
updateOverview();
layout();
dispatchEvent( 'overviewshown', {
'indexh': indexh,
'indexv': indexv,
'currentSlide': currentSlide
} );
}
}
function layoutOverview() {
toArray( dom.wrapper.querySelectorAll( HORIZONTAL_SLIDES_SELECTOR ) ).forEach( function( hslide, h ) {
hslide.setAttribute( 'data-index-h', h );
transformElement( hslide, 'translate3d(' + ( h * overviewSlideWidth ) + 'px, 0, 0)' );
if( hslide.classList.contains( 'stack' ) ) {
toArray( hslide.querySelectorAll( 'section' ) ).forEach( function( vslide, v ) {
vslide.setAttribute( 'data-index-h', h );
vslide.setAttribute( 'data-index-v', v );
transformElement( vslide, 'translate3d(0, ' + ( v * overviewSlideHeight ) + 'px, 0)' );
} );
}
} );
toArray( dom.background.childNodes ).forEach( function( hbackground, h ) {
transformElement( hbackground, 'translate3d(' + ( h * overviewSlideWidth ) + 'px, 0, 0)' );
toArray( hbackground.querySelectorAll( '.slide-background' ) ).forEach( function( vbackground, v ) {
transformElement( vbackground, 'translate3d(0, ' + ( v * overviewSlideHeight ) + 'px, 0)' );
} );
} );
}
function updateOverview() {
var vmin = Math.min( window.innerWidth, window.innerHeight );
var scale = Math.max( vmin / 5, 150 ) / vmin;
transformSlides( {
overview: [
'scale('+ scale +')',
'translateX('+ ( -indexh * overviewSlideWidth ) +'px)',
'translateY('+ ( -indexv * overviewSlideHeight ) +'px)'
].join( ' ' )
} );
}
function deactivateOverview() {
if( config.overview ) {
overview = false;
dom.wrapper.classList.remove( 'overview' );
dom.wrapper.classList.remove( 'overview-animated' );
dom.wrapper.classList.add( 'overview-deactivating' );
setTimeout( function () {
dom.wrapper.classList.remove( 'overview-deactivating' );
}, 1 );
dom.wrapper.appendChild( dom.background );
toArray( dom.wrapper.querySelectorAll( SLIDES_SELECTOR ) ).forEach( function( slide ) {
transformElement( slide, '' );
slide.removeEventListener( 'click', onOverviewSlideClicked, true );
} );
toArray( dom.background.querySelectorAll( '.slide-background' ) ).forEach( function( background ) {
transformElement( background, '' );
} );
transformSlides( { overview: '' } );
slide( indexh, indexv );
layout();
cueAutoSlide();
dispatchEvent( 'overviewhidden', {
'indexh': indexh,
'indexv': indexv,
'currentSlide': currentSlide
} );
}
}
function toggleOverview( override ) {
if( typeof override === 'boolean' ) {
override ? activateOverview() : deactivateOverview();
}
else {
isOverview() ? deactivateOverview() : activateOverview();
}
}
function isOverview() {
return overview;
}
function isVerticalSlide( slide ) {
slide = slide ? slide : currentSlide;
return slide && slide.parentNode && !!slide.parentNode.nodeName.match( /section/i );
}
function enterFullscreen() {
var element = document.documentElement;
var requestMethod = element.requestFullscreen ||
element.webkitRequestFullscreen ||
element.webkitRequestFullScreen ||
element.mozRequestFullScreen ||
element.msRequestFullscreen;
if( requestMethod ) {
requestMethod.apply( element );
}
}
function pause() {
if( config.pause ) {
var wasPaused = dom.wrapper.classList.contains( 'paused' );
cancelAutoSlide();
dom.wrapper.classList.add( 'paused' );
if( wasPaused === false ) {
dispatchEvent( 'paused' );
}
}
}
function resume() {
var wasPaused = dom.wrapper.classList.contains( 'paused' );
dom.wrapper.classList.remove( 'paused' );
cueAutoSlide();
if( wasPaused ) {
dispatchEvent( 'resumed' );
}
}
function togglePause( override ) {
if( typeof override === 'boolean' ) {
override ? pause() : resume();
}
else {
isPaused() ? resume() : pause();
}
}
function isPaused() {
return dom.wrapper.classList.contains( 'paused' );
}
function toggleAutoSlide( override ) {
if( typeof override === 'boolean' ) {
override ? resumeAutoSlide() : pauseAutoSlide();
}
else {
autoSlidePaused ? resumeAutoSlide() : pauseAutoSlide();
}
}
function isAutoSliding() {
return !!( autoSlide && !autoSlidePaused );
}
function slide( h, v, f, o ) {
previousSlide = currentSlide;
var horizontalSlides = dom.wrapper.querySelectorAll( HORIZONTAL_SLIDES_SELECTOR );
if( horizontalSlides.length === 0 ) return;
if( v === undefined && !isOverview() ) {
v = getPreviousVerticalIndex( horizontalSlides[ h ] );
}
if( previousSlide && previousSlide.parentNode && previousSlide.parentNode.classList.contains( 'stack' ) ) {
setPreviousVerticalIndex( previousSlide.parentNode, indexv );
}
var stateBefore = state.concat();
state.length = 0;
var indexhBefore = indexh || 0,
indexvBefore = indexv || 0;
indexh = updateSlides( HORIZONTAL_SLIDES_SELECTOR, h === undefined ? indexh : h );
indexv = updateSlides( VERTICAL_SLIDES_SELECTOR, v === undefined ? indexv : v );
updateSlidesVisibility();
layout();
stateLoop: for( var i = 0, len = state.length; i < len; i++ ) {
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] );
dispatchEvent( state[i] );
}
while( stateBefore.length ) {
document.documentElement.classList.remove( stateBefore.pop() );
}
if( isOverview() ) {
updateOverview();
}
var currentHorizontalSlide = horizontalSlides[ indexh ],
currentVerticalSlides = currentHorizontalSlide.querySelectorAll( 'section' );
currentSlide = currentVerticalSlides[ indexv ] || currentHorizontalSlide;
if( typeof f !== 'undefined' ) {
navigateFragment( f );
}
var slideChanged = ( indexh !== indexhBefore || indexv !== indexvBefore );
if( slideChanged ) {
dispatchEvent( 'slidechanged', {
'indexh': indexh,
'indexv': indexv,
'previousSlide': previousSlide,
'currentSlide': currentSlide,
'origin': o
} );
}
else {
previousSlide = null;
}
if( previousSlide ) {
previousSlide.classList.remove( 'present' );
previousSlide.setAttribute( 'aria-hidden', 'true' );
if ( dom.wrapper.querySelector( HOME_SLIDE_SELECTOR ).classList.contains( 'present' ) ) {
setTimeout( function () {
var slides = toArray( dom.wrapper.querySelectorAll( HORIZONTAL_SLIDES_SELECTOR + '.stack') ), i;
for( i in slides ) {
if( slides[i] ) {
setPreviousVerticalIndex( slides[i], 0 );
}
}
}, 0 );
}
}
if( slideChanged || !previousSlide ) {
stopEmbeddedContent( previousSlide );
startEmbeddedContent( currentSlide );
}
dom.statusDiv.textContent = getStatusText( currentSlide );
updateControls();
updateProgress();
updateBackground();
updateParallax();
updateSlideNumber();
updateNotes();
writeURL();
cueAutoSlide();
}
function sync() {
removeEventListeners();
addEventListeners();
layout();
autoSlide = config.autoSlide;
cueAutoSlide();
createBackgrounds();
writeURL();
sortAllFragments();
updateControls();
updateProgress();
updateSlideNumber();
updateSlidesVisibility();
updateBackground( true );
updateNotesVisibility();
updateNotes();
formatEmbeddedContent();
if( config.autoPlayMedia === false ) {
stopEmbeddedContent( currentSlide, { unloadIframes: false } );
}
else {
startEmbeddedContent( currentSlide );
}
if( isOverview() ) {
layoutOverview();
}
}
function resetVerticalSlides() {
var horizontalSlides = toArray( dom.wrapper.querySelectorAll( HORIZONTAL_SLIDES_SELECTOR ) );
horizontalSlides.forEach( function( horizontalSlide ) {
var verticalSlides = toArray( horizontalSlide.querySelectorAll( 'section' ) );
verticalSlides.forEach( function( verticalSlide, y ) {
if( y > 0 ) {
verticalSlide.classList.remove( 'present' );
verticalSlide.classList.remove( 'past' );
verticalSlide.classList.add( 'future' );
verticalSlide.setAttribute( 'aria-hidden', 'true' );
}
} );
} );
}
function sortAllFragments() {
var horizontalSlides = toArray( dom.wrapper.querySelectorAll( HORIZONTAL_SLIDES_SELECTOR ) );
horizontalSlides.forEach( function( horizontalSlide ) {
var verticalSlides = toArray( horizontalSlide.querySelectorAll( 'section' ) );
verticalSlides.forEach( function( verticalSlide, y ) {
sortFragments( verticalSlide.querySelectorAll( '.fragment' ) );
} );
if( verticalSlides.length === 0 ) sortFragments( horizontalSlide.querySelectorAll( '.fragment' ) );
} );
}
function shuffle() {
var slides = toArray( dom.wrapper.querySelectorAll( HORIZONTAL_SLIDES_SELECTOR ) );
slides.forEach( function( slide ) {
dom.slides.insertBefore( slide, slides[ Math.floor( Math.random() * slides.length ) ] );
} );
}
function updateSlides( selector, index ) {
var slides = toArray( dom.wrapper.querySelectorAll( selector ) ),
slidesLength = slides.length;
var printMode = isPrintingPDF();
if( slidesLength ) {
if( config.loop ) {
index %= slidesLength;
if( index < 0 ) {
index = slidesLength + index;
}
}
index = Math.max( Math.min( index, slidesLength - 1 ), 0 );
for( var i = 0; i < slidesLength; i++ ) {
var element = slides[i];
var reverse = config.rtl && !isVerticalSlide( element );
element.classList.remove( 'past' );
element.classList.remove( 'present' );
element.classList.remove( 'future' );
element.setAttribute( 'hidden', '' );
element.setAttribute( 'aria-hidden', 'true' );
if( element.querySelector( 'section' ) ) {
element.classList.add( 'stack' );
}
if( printMode ) {
element.classList.add( 'present' );
continue;
}
if( i < index ) {
element.classList.add( reverse ? 'future' : 'past' );
if( config.fragments ) {
var pastFragments = toArray( element.querySelectorAll( '.fragment' ) );
while( pastFragments.length ) {
var pastFragment = pastFragments.pop();
pastFragment.classList.add( 'visible' );
pastFragment.classList.remove( 'current-fragment' );
}
}
}
else if( i > index ) {
element.classList.add( reverse ? 'past' : 'future' );
if( config.fragments ) {
var futureFragments = toArray( element.querySelectorAll( '.fragment.visible' ) );
while( futureFragments.length ) {
var futureFragment = futureFragments.pop();
futureFragment.classList.remove( 'visible' );
futureFragment.classList.remove( 'current-fragment' );
}
}
}
}
slides[index].classList.add( 'present' );
slides[index].removeAttribute( 'hidden' );
slides[index].removeAttribute( 'aria-hidden' );
var slideState = slides[index].getAttribute( 'data-state' );
if( slideState ) {
state = state.concat( slideState.split( ' ' ) );
}
}
else {
index = 0;
}
return index;
}
function updateSlidesVisibility() {
var horizontalSlides = toArray( dom.wrapper.querySelectorAll( HORIZONTAL_SLIDES_SELECTOR ) ),
horizontalSlidesLength = horizontalSlides.length,
distanceX,
distanceY;
if( horizontalSlidesLength && typeof indexh !== 'undefined' ) {
var viewDistance = isOverview() ? 10 : config.viewDistance;
if( isMobileDevice ) {
viewDistance = isOverview() ? 6 : 2;
}
if( isPrintingPDF() ) {
viewDistance = Number.MAX_VALUE;
}
for( var x = 0; x < horizontalSlidesLength; x++ ) {
var horizontalSlide = horizontalSlides[x];
var verticalSlides = toArray( horizontalSlide.querySelectorAll( 'section' ) ),
verticalSlidesLength = verticalSlides.length;
distanceX = Math.abs( ( indexh || 0 ) - x ) || 0;
if( config.loop ) {
distanceX = Math.abs( ( ( indexh || 0 ) - x ) % ( horizontalSlidesLength - viewDistance ) ) || 0;
}
if( distanceX < viewDistance ) {
loadSlide( horizontalSlide );
}
else {
unloadSlide( horizontalSlide );
}
if( verticalSlidesLength ) {
var oy = getPreviousVerticalIndex( horizontalSlide );
for( var y = 0; y < verticalSlidesLength; y++ ) {
var verticalSlide = verticalSlides[y];
distanceY = x === ( indexh || 0 ) ? Math.abs( ( indexv || 0 ) - y ) : Math.abs( y - oy );
if( distanceX + distanceY < viewDistance ) {
loadSlide( verticalSlide );
}
else {
unloadSlide( verticalSlide );
}
}
}
}
if( dom.wrapper.querySelectorAll( '.slides>section>section' ).length ) {
dom.wrapper.classList.add( 'has-vertical-slides' );
}
else {
dom.wrapper.classList.remove( 'has-vertical-slides' );
}
if( dom.wrapper.querySelectorAll( '.slides>section' ).length > 1 ) {
dom.wrapper.classList.add( 'has-horizontal-slides' );
}
else {
dom.wrapper.classList.remove( 'has-horizontal-slides' );
}
}
}
function updateNotes() {
if( config.showNotes && dom.speakerNotes && currentSlide && !isPrintingPDF() ) {
dom.speakerNotes.innerHTML = getSlideNotes() || '<span class="notes-placeholder">No notes on this slide.</span>';
}
}
function updateNotesVisibility() {
if( config.showNotes && hasNotes() ) {
dom.wrapper.classList.add( 'show-notes' );
}
else {
dom.wrapper.classList.remove( 'show-notes' );
}
}
function hasNotes() {
return dom.slides.querySelectorAll( '[data-notes], aside.notes' ).length > 0;
}
function updateProgress() {
if( config.progress && dom.progressbar ) {
dom.progressbar.style.width = getProgress() * dom.wrapper.offsetWidth + 'px';
}
}
function updateSlideNumber() {
if( config.slideNumber && dom.slideNumber ) {
var value = [];
var format = 'h.v';
if( typeof config.slideNumber === 'string' ) {
format = config.slideNumber;
}
switch( format ) {
case 'c':
value.push( getSlidePastCount() + 1 );
break;
case 'c/t':
value.push( getSlidePastCount() + 1, '/', getTotalSlides() );
break;
case 'h/v':
value.push( indexh + 1 );
if( isVerticalSlide() ) value.push( '/', indexv + 1 );
break;
default:
value.push( indexh + 1 );
if( isVerticalSlide() ) value.push( '.', indexv + 1 );
}
dom.slideNumber.innerHTML = formatSlideNumber( value[0], value[1], value[2] );
}
}
function formatSlideNumber( a, delimiter, b ) {
if( typeof b === 'number' && !isNaN( b ) ) {
return '<span class="slide-number-a">'+ a +'</span>' +
'<span class="slide-number-delimiter">'+ delimiter +'</span>' +
'<span class="slide-number-b">'+ b +'</span>';
}
else {
return '<span class="slide-number-a">'+ a +'</span>';
}
}
function updateControls() {
var routes = availableRoutes();
var fragments = availableFragments();
dom.controlsLeft.concat( dom.controlsRight )
.concat( dom.controlsUp )
.concat( dom.controlsDown )
.concat( dom.controlsPrev )
.concat( dom.controlsNext ).forEach( function( node ) {
node.classList.remove( 'enabled' );
node.classList.remove( 'fragmented' );
node.setAttribute( 'disabled', 'disabled' );
} );
if( routes.left ) dom.controlsLeft.forEach( function( el ) { el.classList.add( 'enabled' ); el.removeAttribute( 'disabled' ); } );
if( routes.right ) dom.controlsRight.forEach( function( el ) { el.classList.add( 'enabled' ); el.removeAttribute( 'disabled' ); } );
if( routes.up ) dom.controlsUp.forEach( function( el ) { el.classList.add( 'enabled' ); el.removeAttribute( 'disabled' ); } );
if( routes.down ) dom.controlsDown.forEach( function( el ) { el.classList.add( 'enabled' ); el.removeAttribute( 'disabled' ); } );
if( routes.left || routes.up ) dom.controlsPrev.forEach( function( el ) { el.classList.add( 'enabled' ); el.removeAttribute( 'disabled' ); } );
if( routes.right || routes.down ) dom.controlsNext.forEach( function( el ) { el.classList.add( 'enabled' ); el.removeAttribute( 'disabled' ); } );
if( currentSlide ) {
if( fragments.prev ) dom.controlsPrev.forEach( function( el ) { el.classList.add( 'fragmented', 'enabled' ); el.removeAttribute( 'disabled' ); } );
if( fragments.next ) dom.controlsNext.forEach( function( el ) { el.classList.add( 'fragmented', 'enabled' ); el.removeAttribute( 'disabled' ); } );
if( isVerticalSlide( currentSlide ) ) {
if( fragments.prev ) dom.controlsUp.forEach( function( el ) { el.classList.add( 'fragmented', 'enabled' ); el.removeAttribute( 'disabled' ); } );
if( fragments.next ) dom.controlsDown.forEach( function( el ) { el.classList.add( 'fragmented', 'enabled' ); el.removeAttribute( 'disabled' ); } );
}
else {
if( fragments.prev ) dom.controlsLeft.forEach( function( el ) { el.classList.add( 'fragmented', 'enabled' ); el.removeAttribute( 'disabled' ); } );
if( fragments.next ) dom.controlsRight.forEach( function( el ) { el.classList.add( 'fragmented', 'enabled' ); el.removeAttribute( 'disabled' ); } );
}
}
if( config.controlsTutorial ) {
if( !hasNavigatedDown && routes.down ) {
dom.controlsDownArrow.classList.add( 'highlight' );
}
else {
dom.controlsDownArrow.classList.remove( 'highlight' );
if( !hasNavigatedRight && routes.right && indexv === 0 ) {
dom.controlsRightArrow.classList.add( 'highlight' );
}
else {
dom.controlsRightArrow.classList.remove( 'highlight' );
}
}
}
}
function updateBackground( includeAll ) {
var currentBackground = null;
var horizontalPast = config.rtl ? 'future' : 'past',
horizontalFuture = config.rtl ? 'past' : 'future';
toArray( dom.background.childNodes ).forEach( function( backgroundh, h ) {
backgroundh.classList.remove( 'past' );
backgroundh.classList.remove( 'present' );
backgroundh.classList.remove( 'future' );
if( h < indexh ) {
backgroundh.classList.add( horizontalPast );
}
else if ( h > indexh ) {
backgroundh.classList.add( horizontalFuture );
}
else {
backgroundh.classList.add( 'present' );
currentBackground = backgroundh;
}
if( includeAll || h === indexh ) {
toArray( backgroundh.querySelectorAll( '.slide-background' ) ).forEach( function( backgroundv, v ) {
backgroundv.classList.remove( 'past' );
backgroundv.classList.remove( 'present' );
backgroundv.classList.remove( 'future' );
if( v < indexv ) {
backgroundv.classList.add( 'past' );
}
else if ( v > indexv ) {
backgroundv.classList.add( 'future' );
}
else {
backgroundv.classList.add( 'present' );
if( h === indexh ) currentBackground = backgroundv;
}
} );
}
} );
if( previousBackground ) {
stopEmbeddedContent( previousBackground );
}
if( currentBackground ) {
startEmbeddedContent( currentBackground );
var backgroundImageURL = currentBackground.style.backgroundImage || '';
if( /\.gif/i.test( backgroundImageURL ) ) {
currentBackground.style.backgroundImage = '';
window.getComputedStyle( currentBackground ).opacity;
currentBackground.style.backgroundImage = backgroundImageURL;
}
var previousBackgroundHash = previousBackground ? previousBackground.getAttribute( 'data-background-hash' ) : null;
var currentBackgroundHash = currentBackground.getAttribute( 'data-background-hash' );
if( currentBackgroundHash && currentBackgroundHash === previousBackgroundHash && currentBackground !== previousBackground ) {
dom.background.classList.add( 'no-transition' );
}
previousBackground = currentBackground;
}
if( currentSlide ) {
[ 'has-light-background', 'has-dark-background' ].forEach( function( classToBubble ) {
if( currentSlide.classList.contains( classToBubble ) ) {
dom.wrapper.classList.add( classToBubble );
}
else {
dom.wrapper.classList.remove( classToBubble );
}
} );
}
setTimeout( function() {
dom.background.classList.remove( 'no-transition' );
}, 1 );
}
function updateParallax() {
if( config.parallaxBackgroundImage ) {
var horizontalSlides = dom.wrapper.querySelectorAll( HORIZONTAL_SLIDES_SELECTOR ),
verticalSlides = dom.wrapper.querySelectorAll( VERTICAL_SLIDES_SELECTOR );
var backgroundSize = dom.background.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 );
}
var slideWidth = dom.background.offsetWidth,
horizontalSlideCount = horizontalSlides.length,
horizontalOffsetMultiplier,
horizontalOffset;
if( typeof config.parallaxBackgroundHorizontal === 'number' ) {
horizontalOffsetMultiplier = config.parallaxBackgroundHorizontal;
}
else {
horizontalOffsetMultiplier = horizontalSlideCount > 1 ? ( backgroundWidth - slideWidth ) / ( horizontalSlideCount-1 ) : 0;
}
horizontalOffset = horizontalOffsetMultiplier * indexh * -1;
var slideHeight = dom.background.offsetHeight,
verticalSlideCount = verticalSlides.length,
verticalOffsetMultiplier,
verticalOffset;
if( typeof config.parallaxBackgroundVertical === 'number' ) {
verticalOffsetMultiplier = config.parallaxBackgroundVertical;
}
else {
verticalOffsetMultiplier = ( backgroundHeight - slideHeight ) / ( verticalSlideCount-1 );
}
verticalOffset = verticalSlideCount > 0 ? verticalOffsetMultiplier * indexv : 0;
dom.background.style.backgroundPosition = horizontalOffset + 'px ' + -verticalOffset + 'px';
}
}
function loadSlide( slide, options ) {
options = options || {};
slide.style.display = config.display;
toArray( slide.querySelectorAll( 'img[data-src], video[data-src], audio[data-src]' ) ).forEach( function( element ) {
element.setAttribute( 'src', element.getAttribute( 'data-src' ) );
element.setAttribute( 'data-lazy-loaded', '' );
element.removeAttribute( 'data-src' );
} );
toArray( slide.querySelectorAll( 'video, audio' ) ).forEach( function( media ) {
var sources = 0;
toArray( media.querySelectorAll( 'source[data-src]' ) ).forEach( function( source ) {
source.setAttribute( 'src', source.getAttribute( 'data-src' ) );
source.removeAttribute( 'data-src' );
source.setAttribute( 'data-lazy-loaded', '' );
sources += 1;
} );
if( sources > 0 ) {
media.load();
}
} );
var indices = getIndices( slide );
var background = getSlideBackground( indices.h, indices.v );
if( background ) {
background.style.display = 'block';
if( background.hasAttribute( 'data-loaded' ) === false ) {
background.setAttribute( 'data-loaded', 'true' );
var 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' ),
backgroundIframe = slide.getAttribute( 'data-background-iframe' );
if( backgroundImage ) {
background.style.backgroundImage = 'url('+ backgroundImage +')';
}
else if ( backgroundVideo && !isSpeakerNotes() ) {
var video = document.createElement( 'video' );
if( backgroundVideoLoop ) {
video.setAttribute( 'loop', '' );
}
if( backgroundVideoMuted ) {
video.muted = true;
}
if( isMobileDevice ) {
video.muted = true;
video.autoplay = true;
video.setAttribute( 'playsinline', '' );
}
backgroundVideo.split( ',' ).forEach( function( source ) {
video.innerHTML += '<source src="'+ source +'">';
} );
background.appendChild( video );
}
else if( backgroundIframe && options.excludeIframes !== true ) {
var iframe = document.createElement( 'iframe' );
iframe.setAttribute( 'allowfullscreen', '' );
iframe.setAttribute( 'mozallowfullscreen', '' );
iframe.setAttribute( 'webkitallowfullscreen', '' );
if( /autoplay=(1|true|yes)/gi.test( backgroundIframe ) ) {
iframe.setAttribute( 'data-src', backgroundIframe );
}
else {
iframe.setAttribute( 'src', backgroundIframe );
}
iframe.style.width = '100%';
iframe.style.height = '100%';
iframe.style.maxHeight = '100%';
iframe.style.maxWidth = '100%';
background.appendChild( iframe );
}
}
}
}
function unloadSlide( slide ) {
slide.style.display = 'none';
var indices = getIndices( slide );
var background = getSlideBackground( indices.h, indices.v );
if( background ) {
background.style.display = 'none';
}
toArray( slide.querySelectorAll( 'video[data-lazy-loaded][src], audio[data-lazy-loaded][src]' ) ).forEach( function( element ) {
element.setAttribute( 'data-src', element.getAttribute( 'src' ) );
element.removeAttribute( 'src' );
} );
toArray( slide.querySelectorAll( 'video[data-lazy-loaded] source[src], audio source[src]' ) ).forEach( function( source ) {
source.setAttribute( 'data-src', source.getAttribute( 'src' ) );
source.removeAttribute( 'src' );
} );
}
function availableRoutes() {
var horizontalSlides = dom.wrapper.querySelectorAll( HORIZONTAL_SLIDES_SELECTOR ),
verticalSlides = dom.wrapper.querySelectorAll( VERTICAL_SLIDES_SELECTOR );
var routes = {
left: indexh > 0 || config.loop,
right: indexh < horizontalSlides.length - 1 || config.loop,
up: indexv > 0,
down: indexv < verticalSlides.length - 1
};
if( config.rtl ) {
var left = routes.left;
routes.left = routes.right;
routes.right = left;
}
return routes;
}
function availableFragments() {
if( currentSlide && config.fragments ) {
var fragments = currentSlide.querySelectorAll( '.fragment' );
var hiddenFragments = currentSlide.querySelectorAll( '.fragment:not(.visible)' );
return {
prev: fragments.length - hiddenFragments.length > 0,
next: !!hiddenFragments.length
};
}
else {
return { prev: false, next: false };
}
}
function formatEmbeddedContent() {
var _appendParamToIframeSource = function( sourceAttribute, sourceURL, param ) {
toArray( dom.slides.querySelectorAll( 'iframe['+ sourceAttribute +'*="'+ sourceURL +'"]' ) ).forEach( function( el ) {
var src = el.getAttribute( sourceAttribute );
if( src && src.indexOf( param ) === -1 ) {
el.setAttribute( sourceAttribute, src + ( !/\?/.test( src ) ? '?' : '&' ) + param );
}
});
};
_appendParamToIframeSource( 'src', 'youtube.com/embed/', 'enablejsapi=1' );
_appendParamToIframeSource( 'data-src', 'youtube.com/embed/', 'enablejsapi=1' );
_appendParamToIframeSource( 'src', 'player.vimeo.com/', 'api=1' );
_appendParamToIframeSource( 'data-src', 'player.vimeo.com/', 'api=1' );
if( isMobileDevice ) {
toArray( dom.slides.querySelectorAll( 'video, audio' ) ).forEach( function( el ) {
el.controls = true;
} );
}
}
function startEmbeddedContent( element ) {
if( element && !isSpeakerNotes() ) {
toArray( element.querySelectorAll( 'img[src$=".gif"]' ) ).forEach( function( el ) {
el.setAttribute( 'src', el.getAttribute( 'src' ) );
} );
toArray( element.querySelectorAll( 'video, audio' ) ).forEach( function( el ) {
if( closestParent( el, '.fragment' ) && !closestParent( el, '.fragment.visible' ) ) {
return;
}
var autoplay = config.autoPlayMedia;
if( typeof autoplay !== 'boolean' ) {
autoplay = el.hasAttribute( 'data-autoplay' ) || !!closestParent( el, '.slide-background' );
}
if( autoplay && typeof el.play === 'function' ) {
if( el.readyState > 1 ) {
startEmbeddedMedia( { target: el } );
}
else {
el.removeEventListener( 'loadeddata', startEmbeddedMedia );
el.addEventListener( 'loadeddata', startEmbeddedMedia );
}
}
} );
toArray( element.querySelectorAll( 'iframe[src]' ) ).forEach( function( el ) {
if( closestParent( el, '.fragment' ) && !closestParent( el, '.fragment.visible' ) ) {
return;
}
startEmbeddedIframe( { target: el } );
} );
toArray( element.querySelectorAll( 'iframe[data-src]' ) ).forEach( function( el ) {
if( closestParent( el, '.fragment' ) && !closestParent( el, '.fragment.visible' ) ) {
return;
}
if( el.getAttribute( 'src' ) !== el.getAttribute( 'data-src' ) ) {
el.removeEventListener( 'load', startEmbeddedIframe );
el.addEventListener( 'load', startEmbeddedIframe );
el.setAttribute( 'src', el.getAttribute( 'data-src' ) );
}
} );
}
}
function startEmbeddedMedia( event ) {
var isAttachedToDOM = !!closestParent( event.target, 'html' ),
isVisible = !!closestParent( event.target, '.present' );
if( isAttachedToDOM && isVisible ) {
event.target.currentTime = 0;
event.target.play();
}
event.target.removeEventListener( 'loadeddata', startEmbeddedMedia );
}
function startEmbeddedIframe( event ) {
var iframe = event.target;
if( iframe && iframe.contentWindow ) {
var isAttachedToDOM = !!closestParent( event.target, 'html' ),
isVisible = !!closestParent( event.target, '.present' );
if( isAttachedToDOM && isVisible ) {
var autoplay = config.autoPlayMedia;
if( typeof autoplay !== 'boolean' ) {
autoplay = iframe.hasAttribute( 'data-autoplay' ) || !!closestParent( iframe, '.slide-background' );
}
if( /youtube\.com\/embed\//.test( iframe.getAttribute( 'src' ) ) && autoplay ) {
iframe.contentWindow.postMessage( '{"event":"command","func":"playVideo","args":""}', '*' );
}
else if( /player\.vimeo\.com\//.test( iframe.getAttribute( 'src' ) ) && autoplay ) {
iframe.contentWindow.postMessage( '{"method":"play"}', '*' );
}
else {
iframe.contentWindow.postMessage( 'slide:start', '*' );
}
}
}
}
function stopEmbeddedContent( element, options ) {
options = extend( {
unloadIframes: true
}, options || {} );
if( element && element.parentNode ) {
toArray( element.querySelectorAll( 'video, audio' ) ).forEach( function( el ) {
if( !el.hasAttribute( 'data-ignore' ) && typeof el.pause === 'function' ) {
el.setAttribute('data-paused-by-reveal', '');
el.pause();
}
} );
toArray( element.querySelectorAll( 'iframe' ) ).forEach( function( el ) {
if( el.contentWindow ) el.contentWindow.postMessage( 'slide:stop', '*' );
el.removeEventListener( 'load', startEmbeddedIframe );
});
toArray( element.querySelectorAll( 'iframe[src*="youtube.com/embed/"]' ) ).forEach( function( el ) {
if( !el.hasAttribute( 'data-ignore' ) && el.contentWindow && typeof el.contentWindow.postMessage === 'function' ) {
el.contentWindow.postMessage( '{"event":"command","func":"pauseVideo","args":""}', '*' );
}
});
toArray( element.querySelectorAll( 'iframe[src*="player.vimeo.com/"]' ) ).forEach( function( el ) {
if( !el.hasAttribute( 'data-ignore' ) && el.contentWindow && typeof el.contentWindow.postMessage === 'function' ) {
el.contentWindow.postMessage( '{"method":"pause"}', '*' );
}
});
if( options.unloadIframes === true ) {
toArray( element.querySelectorAll( 'iframe[data-src]' ) ).forEach( function( el ) {
el.setAttribute( 'src', 'about:blank' );
el.removeAttribute( 'src' );
} );
}
}
}
function getSlidePastCount() {
var horizontalSlides = toArray( dom.wrapper.querySelectorAll( HORIZONTAL_SLIDES_SELECTOR ) );
var pastCount = 0;
mainLoop: for( var i = 0; i < horizontalSlides.length; i++ ) {
var horizontalSlide = horizontalSlides[i];
var verticalSlides = toArray( horizontalSlide.querySelectorAll( 'section' ) );
for( var j = 0; j < verticalSlides.length; j++ ) {
if( verticalSlides[j].classList.contains( 'present' ) ) {
break mainLoop;
}
pastCount++;
}
if( horizontalSlide.classList.contains( 'present' ) ) {
break;
}
if( horizontalSlide.classList.contains( 'stack' ) === false ) {
pastCount++;
}
}
return pastCount;
}
function getProgress() {
var totalCount = getTotalSlides();
var pastCount = getSlidePastCount();
if( currentSlide ) {
var allFragments = currentSlide.querySelectorAll( '.fragment' );
if( allFragments.length > 0 ) {
var visibleFragments = currentSlide.querySelectorAll( '.fragment.visible' );
var fragmentWeight = 0.9;
pastCount += ( visibleFragments.length / allFragments.length ) * fragmentWeight;
}
}
return pastCount / ( totalCount - 1 );
}
function isSpeakerNotes() {
return !!window.location.search.match( /receiver/gi );
}
function readURL() {
var hash = window.location.hash;
var bits = hash.slice( 2 ).split( '/' ),
name = hash.replace( /#|\//gi, '' );
if( isNaN( parseInt( bits[0], 10 ) ) && name.length ) {
var element;
if( /^[a-zA-Z][\w:.-]*$/.test( name ) ) {
element = document.getElementById( name );
}
if( element ) {
var indices = Reveal.getIndices( element );
slide( indices.h, indices.v );
}
else {
slide( indexh || 0, indexv || 0 );
}
}
else {
var h = parseInt( bits[0], 10 ) || 0,
v = parseInt( bits[1], 10 ) || 0;
if( h !== indexh || v !== indexv ) {
slide( h, v );
}
}
}
function writeURL( delay ) {
if( config.history ) {
clearTimeout( writeURLTimeout );
if( typeof delay === 'number' ) {
writeURLTimeout = setTimeout( writeURL, delay );
}
else if( currentSlide ) {
var url = '/';
var id = currentSlide.getAttribute( 'id' );
if( id ) {
id = id.replace( /[^a-zA-Z0-9\-\_\:\.]/g, '' );
}
if( typeof id === 'string' && id.length ) {
url = '/' + id;
}
else {
if( indexh > 0 || indexv > 0 ) url += indexh;
if( indexv > 0 ) url += '/' + indexv;
}
window.location.hash = url;
}
}
}
function getIndices( slide ) {
var h = indexh,
v = indexv,
f;
if( slide ) {
var isVertical = isVerticalSlide( slide );
var slideh = isVertical ? slide.parentNode : slide;
var horizontalSlides = toArray( dom.wrapper.querySelectorAll( HORIZONTAL_SLIDES_SELECTOR ) );
h = Math.max( horizontalSlides.indexOf( slideh ), 0 );
v = undefined;
if( isVertical ) {
v = Math.max( toArray( slide.parentNode.querySelectorAll( 'section' ) ).indexOf( slide ), 0 );
}
}
if( !slide && currentSlide ) {
var hasFragments = currentSlide.querySelectorAll( '.fragment' ).length > 0;
if( hasFragments ) {
var currentFragment = currentSlide.querySelector( '.current-fragment' );
if( currentFragment && currentFragment.hasAttribute( 'data-fragment-index' ) ) {
f = parseInt( currentFragment.getAttribute( 'data-fragment-index' ), 10 );
}
else {
f = currentSlide.querySelectorAll( '.fragment.visible' ).length - 1;
}
}
}
return { h: h, v: v, f: f };
}
function getSlides() {
return toArray( dom.wrapper.querySelectorAll( SLIDES_SELECTOR + ':not(.stack)' ));
}
function getTotalSlides() {
return getSlides().length;
}
function getSlide( x, y ) {
var horizontalSlide = dom.wrapper.querySelectorAll( HORIZONTAL_SLIDES_SELECTOR )[ x ];
var verticalSlides = horizontalSlide && horizontalSlide.querySelectorAll( 'section' );
if( verticalSlides && verticalSlides.length && typeof y === 'number' ) {
return verticalSlides ? verticalSlides[ y ] : undefined;
}
return horizontalSlide;
}
function getSlideBackground( x, y ) {
var slide = getSlide( x, y );
if( slide ) {
return slide.slideBackgroundElement;
}
return undefined;
}
function getSlideNotes( slide ) {
slide = slide || currentSlide;
if( slide.hasAttribute( 'data-notes' ) ) {
return slide.getAttribute( 'data-notes' );
}
var notesElement = slide.querySelector( 'aside.notes' );
if( notesElement ) {
return notesElement.innerHTML;
}
return null;
}
function getState() {
var indices = getIndices();
return {
indexh: indices.h,
indexv: indices.v,
indexf: indices.f,
paused: isPaused(),
overview: isOverview()
};
}
function setState( state ) {
if( typeof state === 'object' ) {
slide( deserialize( state.indexh ), deserialize( state.indexv ), deserialize( state.indexf ) );
var pausedFlag = deserialize( state.paused ),
overviewFlag = deserialize( state.overview );
if( typeof pausedFlag === 'boolean' && pausedFlag !== isPaused() ) {
togglePause( pausedFlag );
}
if( typeof overviewFlag === 'boolean' && overviewFlag !== isOverview() ) {
toggleOverview( overviewFlag );
}
}
}
function sortFragments( fragments ) {
fragments = toArray( fragments );
var ordered = [],
unordered = [],
sorted = [];
fragments.forEach( function( fragment, i ) {
if( fragment.hasAttribute( 'data-fragment-index' ) ) {
var index = parseInt( fragment.getAttribute( 'data-fragment-index' ), 10 );
if( !ordered[index] ) {
ordered[index] = [];
}
ordered[index].push( fragment );
}
else {
unordered.push( [ fragment ] );
}
} );
ordered = ordered.concat( unordered );
var index = 0;
ordered.forEach( function( group ) {
group.forEach( function( fragment ) {
sorted.push( fragment );
fragment.setAttribute( 'data-fragment-index', index );
} );
index ++;
} );
return sorted;
}
function navigateFragment( index, offset ) {
if( currentSlide && config.fragments ) {
var fragments = sortFragments( currentSlide.querySelectorAll( '.fragment' ) );
if( fragments.length ) {
if( typeof index !== 'number' ) {
var lastVisibleFragment = sortFragments( currentSlide.querySelectorAll( '.fragment.visible' ) ).pop();
if( lastVisibleFragment ) {
index = parseInt( lastVisibleFragment.getAttribute( 'data-fragment-index' ) || 0, 10 );
}
else {
index = -1;
}
}
if( typeof offset === 'number' ) {
index += offset;
}
var fragmentsShown = [],
fragmentsHidden = [];
toArray( fragments ).forEach( function( element, i ) {
if( element.hasAttribute( 'data-fragment-index' ) ) {
i = parseInt( element.getAttribute( 'data-fragment-index' ), 10 );
}
if( i <= index ) {
if( !element.classList.contains( 'visible' ) ) fragmentsShown.push( element );
element.classList.add( 'visible' );
element.classList.remove( 'current-fragment' );
dom.statusDiv.textContent = getStatusText( element );
if( i === index ) {
element.classList.add( 'current-fragment' );
startEmbeddedContent( element );
}
}
else {
if( element.classList.contains( 'visible' ) ) fragmentsHidden.push( element );
element.classList.remove( 'visible' );
element.classList.remove( 'current-fragment' );
}
} );
if( fragmentsHidden.length ) {
dispatchEvent( 'fragmenthidden', { fragment: fragmentsHidden[0], fragments: fragmentsHidden } );
}
if( fragmentsShown.length ) {
dispatchEvent( 'fragmentshown', { fragment: fragmentsShown[0], fragments: fragmentsShown } );
}
updateControls();
updateProgress();
return !!( fragmentsShown.length || fragmentsHidden.length );
}
}
return false;
}
function nextFragment() {
return navigateFragment( null, 1 );
}
function previousFragment() {
return navigateFragment( null, -1 );
}
function cueAutoSlide() {
cancelAutoSlide();
if( currentSlide && config.autoSlide !== false ) {
var fragment = currentSlide.querySelector( '.current-fragment' );
if( !fragment ) fragment = currentSlide.querySelector( '.fragment' );
var fragmentAutoSlide = fragment ? fragment.getAttribute( 'data-autoslide' ) : null;
var parentAutoSlide = currentSlide.parentNode ? currentSlide.parentNode.getAttribute( 'data-autoslide' ) : null;
var slideAutoSlide = currentSlide.getAttribute( 'data-autoslide' );
if( fragmentAutoSlide ) {
autoSlide = parseInt( fragmentAutoSlide, 10 );
}
else if( slideAutoSlide ) {
autoSlide = parseInt( slideAutoSlide, 10 );
}
else if( parentAutoSlide ) {
autoSlide = parseInt( parentAutoSlide, 10 );
}
else {
autoSlide = config.autoSlide;
}
if( currentSlide.querySelectorAll( '.fragment' ).length === 0 ) {
toArray( currentSlide.querySelectorAll( 'video, audio' ) ).forEach( function( el ) {
if( el.hasAttribute( 'data-autoplay' ) ) {
if( autoSlide && (el.duration * 1000 / el.playbackRate ) > autoSlide ) {
autoSlide = ( el.duration * 1000 / el.playbackRate ) + 1000;
}
}
} );
}
if( autoSlide && !autoSlidePaused && !isPaused() && !isOverview() && ( !Reveal.isLastSlide() || availableFragments().next || config.loop === true ) ) {
autoSlideTimeout = setTimeout( function() {
typeof config.autoSlideMethod === 'function' ? config.autoSlideMethod() : navigateNext();
cueAutoSlide();
}, autoSlide );
autoSlideStartTime = Date.now();
}
if( autoSlidePlayer ) {
autoSlidePlayer.setPlaying( autoSlideTimeout !== -1 );
}
}
}
function cancelAutoSlide() {
clearTimeout( autoSlideTimeout );
autoSlideTimeout = -1;
}
function pauseAutoSlide() {
if( autoSlide && !autoSlidePaused ) {
autoSlidePaused = true;
dispatchEvent( 'autoslidepaused' );
clearTimeout( autoSlideTimeout );
if( autoSlidePlayer ) {
autoSlidePlayer.setPlaying( false );
}
}
}
function resumeAutoSlide() {
if( autoSlide && autoSlidePaused ) {
autoSlidePaused = false;
dispatchEvent( 'autoslideresumed' );
cueAutoSlide();
}
}
function navigateLeft() {
if( config.rtl ) {
if( ( isOverview() || nextFragment() === false ) && availableRoutes().left ) {
slide( indexh + 1 );
}
}
else if( ( isOverview() || previousFragment() === false ) && availableRoutes().left ) {
slide( indexh - 1 );
}
}
function navigateRight() {
hasNavigatedRight = true;
if( config.rtl ) {
if( ( isOverview() || previousFragment() === false ) && availableRoutes().right ) {
slide( indexh - 1 );
}
}
else if( ( isOverview() || nextFragment() === false ) && availableRoutes().right ) {
slide( indexh + 1 );
}
}
function navigateUp() {
if( ( isOverview() || previousFragment() === false ) && availableRoutes().up ) {
slide( indexh, indexv - 1 );
}
}
function navigateDown() {
hasNavigatedDown = true;
if( ( isOverview() || nextFragment() === false ) && availableRoutes().down ) {
slide( indexh, indexv + 1 );
}
}
function navigatePrev() {
if( previousFragment() === false ) {
if( availableRoutes().up ) {
navigateUp();
}
else {
var previousSlide;
if( config.rtl ) {
previousSlide = toArray( dom.wrapper.querySelectorAll( HORIZONTAL_SLIDES_SELECTOR + '.future' ) ).pop();
}
else {
previousSlide = toArray( dom.wrapper.querySelectorAll( HORIZONTAL_SLIDES_SELECTOR + '.past' ) ).pop();
}
if( previousSlide ) {
var v = ( previousSlide.querySelectorAll( 'section' ).length - 1 ) || undefined;
var h = indexh - 1;
slide( h, v );
}
}
}
}
function navigateNext() {
hasNavigatedRight = true;
hasNavigatedDown = true;
if( nextFragment() === false ) {
if( availableRoutes().down ) {
navigateDown();
}
else if( config.rtl ) {
navigateLeft();
}
else {
navigateRight();
}
}
}
function isSwipePrevented( target ) {
while( target && typeof target.hasAttribute === 'function' ) {
if( target.hasAttribute( 'data-prevent-swipe' ) ) return true;
target = target.parentNode;
}
return false;
}
function onUserInput( event ) {
if( config.autoSlideStoppable ) {
pauseAutoSlide();
}
}
function onDocumentKeyPress( event ) {
if( event.shiftKey && event.charCode === 63 ) {
toggleHelp();
}
}
function onDocumentKeyDown( event ) {
if( typeof config.keyboardCondition === 'function' && config.keyboardCondition() === false ) {
return true;
}
var autoSlideWasPaused = autoSlidePaused;
onUserInput( event );
var activeElementIsCE = document.activeElement && document.activeElement.contentEditable !== 'inherit';
var activeElementIsInput = document.activeElement && document.activeElement.tagName && /input|textarea/i.test( document.activeElement.tagName );
var activeElementIsNotes = document.activeElement && document.activeElement.className && /speaker-notes/i.test( document.activeElement.className);
if( activeElementIsCE || activeElementIsInput || activeElementIsNotes || (event.shiftKey && event.keyCode !== 32) || event.altKey || event.ctrlKey || event.metaKey ) return;
var resumeKeyCodes = [66,86,190,191];
var key;
if( typeof config.keyboard === 'object' ) {
for( key in config.keyboard ) {
if( config.keyboard[key] === 'togglePause' ) {
resumeKeyCodes.push( parseInt( key, 10 ) );
}
}
}
if( isPaused() && resumeKeyCodes.indexOf( event.keyCode ) === -1 ) {
return false;
}
var triggered = false;
if( typeof config.keyboard === 'object' ) {
for( key in config.keyboard ) {
if( parseInt( key, 10 ) === event.keyCode ) {
var value = config.keyboard[ key ];
if( typeof value === 'function' ) {
value.apply( null, [ event ] );
}
else if( typeof value === 'string' && typeof Reveal[ value ] === 'function' ) {
Reveal[ value ].call();
}
triggered = true;
}
}
}
if( triggered === false ) {
triggered = true;
switch( event.keyCode ) {
case 80: case 33: navigatePrev(); break;
case 78: case 34: navigateNext(); break;
case 72: case 37: navigateLeft(); break;
case 76: case 39: navigateRight(); break;
case 75: case 38: navigateUp(); break;
case 74: case 40: navigateDown(); break;
case 36: slide( 0 ); break;
case 35: slide( Number.MAX_VALUE ); break;
case 32: isOverview() ? deactivateOverview() : event.shiftKey ? navigatePrev() : navigateNext(); break;
case 13: isOverview() ? deactivateOverview() : triggered = false; break;
case 58: case 59: case 66: case 86: case 190: case 191: togglePause(); break;
case 70: enterFullscreen(); break;
case 65: if ( config.autoSlideStoppable ) toggleAutoSlide( autoSlideWasPaused ); break;
default:
triggered = false;
}
}
if( triggered ) {
event.preventDefault && event.preventDefault();
}
else if ( ( event.keyCode === 27 || event.keyCode === 79 ) && features.transforms3d ) {
if( dom.overlay ) {
closeOverlay();
}
else {
toggleOverview();
}
event.preventDefault && event.preventDefault();
}
cueAutoSlide();
}
function onTouchStart( event ) {
if( isSwipePrevented( event.target ) ) return true;
touch.startX = event.touches[0].clientX;
touch.startY = event.touches[0].clientY;
touch.startCount = event.touches.length;
if( event.touches.length === 2 && config.overview ) {
touch.startSpan = distanceBetween( {
x: event.touches[1].clientX,
y: event.touches[1].clientY
}, {
x: touch.startX,
y: touch.startY
} );
}
}
function onTouchMove( event ) {
if( isSwipePrevented( event.target ) ) return true;
if( !touch.captured ) {
onUserInput( event );
var currentX = event.touches[0].clientX;
var currentY = event.touches[0].clientY;
if( event.touches.length === 2 && touch.startCount === 2 && config.overview ) {
var currentSpan = distanceBetween( {
x: event.touches[1].clientX,
y: event.touches[1].clientY
}, {
x: touch.startX,
y: touch.startY
} );
if( Math.abs( touch.startSpan - currentSpan ) > touch.threshold ) {
touch.captured = true;
if( currentSpan < touch.startSpan ) {
activateOverview();
}
else {
deactivateOverview();
}
}
event.preventDefault();
}
else if( event.touches.length === 1 && touch.startCount !== 2 ) {
var deltaX = currentX - touch.startX,
deltaY = currentY - touch.startY;
if( deltaX > touch.threshold && Math.abs( deltaX ) > Math.abs( deltaY ) ) {
touch.captured = true;
navigateLeft();
}
else if( deltaX < -touch.threshold && Math.abs( deltaX ) > Math.abs( deltaY ) ) {
touch.captured = true;
navigateRight();
}
else if( deltaY > touch.threshold ) {
touch.captured = true;
navigateUp();
}
else if( deltaY < -touch.threshold ) {
touch.captured = true;
navigateDown();
}
if( config.embedded ) {
if( touch.captured || isVerticalSlide( currentSlide ) ) {
event.preventDefault();
}
}
else {
event.preventDefault();
}
}
}
else if( UA.match( /android/gi ) ) {
event.preventDefault();
}
}
function onTouchEnd( event ) {
touch.captured = false;
}
function onPointerDown( event ) {
if( event.pointerType === event.MSPOINTER_TYPE_TOUCH || event.pointerType === "touch" ) {
event.touches = [{ clientX: event.clientX, clientY: event.clientY }];
onTouchStart( event );
}
}
function onPointerMove( event ) {
if( event.pointerType === event.MSPOINTER_TYPE_TOUCH || event.pointerType === "touch" ) {
event.touches = [{ clientX: event.clientX, clientY: event.clientY }];
onTouchMove( event );
}
}
function onPointerUp( event ) {
if( event.pointerType === event.MSPOINTER_TYPE_TOUCH || event.pointerType === "touch" ) {
event.touches = [{ clientX: event.clientX, clientY: event.clientY }];
onTouchEnd( event );
}
}
function onDocumentMouseScroll( event ) {
if( Date.now() - lastMouseWheelStep > 600 ) {
lastMouseWheelStep = Date.now();
var delta = event.detail || -event.wheelDelta;
if( delta > 0 ) {
navigateNext();
}
else if( delta < 0 ) {
navigatePrev();
}
}
}
function onProgressClicked( event ) {
onUserInput( event );
event.preventDefault();
var slidesTotal = toArray( dom.wrapper.querySelectorAll( HORIZONTAL_SLIDES_SELECTOR ) ).length;
var slideIndex = Math.floor( ( event.clientX / dom.wrapper.offsetWidth ) * slidesTotal );
if( config.rtl ) {
slideIndex = slidesTotal - slideIndex;
}
slide( slideIndex );
}
function onNavigateLeftClicked( event ) { event.preventDefault(); onUserInput(); navigateLeft(); }
function onNavigateRightClicked( event ) { event.preventDefault(); onUserInput(); navigateRight(); }
function onNavigateUpClicked( event ) { event.preventDefault(); onUserInput(); navigateUp(); }
function onNavigateDownClicked( event ) { event.preventDefault(); onUserInput(); navigateDown(); }
function onNavigatePrevClicked( event ) { event.preventDefault(); onUserInput(); navigatePrev(); }
function onNavigateNextClicked( event ) { event.preventDefault(); onUserInput(); navigateNext(); }
function onWindowHashChange( event ) {
readURL();
}
function onWindowResize( event ) {
layout();
}
function onPageVisibilityChange( event ) {
var isHidden = document.webkitHidden ||
document.msHidden ||
document.hidden;
if( isHidden === false && document.activeElement !== document.body ) {
if( typeof document.activeElement.blur === 'function' ) {
document.activeElement.blur();
}
document.body.focus();
}
}
function onOverviewSlideClicked( event ) {
if( eventsAreBound && isOverview() ) {
event.preventDefault();
var element = event.target;
while( element && !element.nodeName.match( /section/gi ) ) {
element = element.parentNode;
}
if( element && !element.classList.contains( 'disabled' ) ) {
deactivateOverview();
if( element.nodeName.match( /section/gi ) ) {
var h = parseInt( element.getAttribute( 'data-index-h' ), 10 ),
v = parseInt( element.getAttribute( 'data-index-v' ), 10 );
slide( h, v );
}
}
}
}
function onPreviewLinkClicked( event ) {
if( event.currentTarget && event.currentTarget.hasAttribute( 'href' ) ) {
var url = event.currentTarget.getAttribute( 'href' );
if( url ) {
showPreview( url );
event.preventDefault();
}
}
}
function onAutoSlidePlayerClick( event ) {
if( Reveal.isLastSlide() && config.loop === false ) {
slide( 0, 0 );
resumeAutoSlide();
}
else if( autoSlidePaused ) {
resumeAutoSlide();
}
else {
pauseAutoSlide();
}
}
function Playback( container, progressCheck ) {
this.diameter = 100;
this.diameter2 = this.diameter/2;
this.thickness = 6;
this.playing = false;
this.progress = 0;
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();
}
Playback.prototype.setPlaying = function( value ) {
var wasPlaying = this.playing;
this.playing = value;
if( !wasPlaying && this.playing ) {
this.animate();
}
else {
this.render();
}
};
Playback.prototype.animate = function() {
var progressBefore = this.progress;
this.progress = this.progressCheck();
if( progressBefore > 0.8 && this.progress < 0.2 ) {
this.progressOffset = this.progress;
}
this.render();
if( this.playing ) {
features.requestAnimationFrameMethod.call( window, this.animate.bind( this ) );
}
};
Playback.prototype.render = function() {
var progress = this.playing ? this.progress : 0,
radius = ( this.diameter2 ) - this.thickness,
x = this.diameter2,
y = this.diameter2,
iconSize = 28;
this.progressOffset += ( 1 - this.progressOffset ) * 0.1;
var endAngle = ( - Math.PI / 2 ) + ( progress * ( Math.PI * 2 ) );
var startAngle = ( - Math.PI / 2 ) + ( this.progressOffset * ( Math.PI * 2 ) );
this.context.save();
this.context.clearRect( 0, 0, this.diameter, this.diameter );
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();
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 ) {
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 ) );
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();
};
Playback.prototype.on = function( type, listener ) {
this.canvas.addEventListener( type, listener, false );
};
Playback.prototype.off = function( type, listener ) {
this.canvas.removeEventListener( type, listener, false );
};
Playback.prototype.destroy = function() {
this.playing = false;
if( this.canvas.parentNode ) {
this.container.removeChild( this.canvas );
}
};
Reveal = {
VERSION: VERSION,
initialize: initialize,
configure: configure,
sync: sync,
slide: slide,
left: navigateLeft,
right: navigateRight,
up: navigateUp,
down: navigateDown,
prev: navigatePrev,
next: navigateNext,
navigateFragment: navigateFragment,
prevFragment: previousFragment,
nextFragment: nextFragment,
navigateTo: slide,
navigateLeft: navigateLeft,
navigateRight: navigateRight,
navigateUp: navigateUp,
navigateDown: navigateDown,
navigatePrev: navigatePrev,
navigateNext: navigateNext,
layout: layout,
shuffle: shuffle,
availableRoutes: availableRoutes,
availableFragments: availableFragments,
toggleHelp: toggleHelp,
toggleOverview: toggleOverview,
togglePause: togglePause,
toggleAutoSlide: toggleAutoSlide,
isOverview: isOverview,
isPaused: isPaused,
isAutoSliding: isAutoSliding,
isSpeakerNotes: isSpeakerNotes,
loadSlide: loadSlide,
unloadSlide: unloadSlide,
addEventListeners: addEventListeners,
removeEventListeners: removeEventListeners,
getState: getState,
setState: setState,
getSlidePastCount: getSlidePastCount,
getProgress: getProgress,
getIndices: getIndices,
getSlides: getSlides,
getTotalSlides: getTotalSlides,
getSlide: getSlide,
getSlideBackground: getSlideBackground,
getSlideNotes: getSlideNotes,
getPreviousSlide: function() {
return previousSlide;
},
getCurrentSlide: function() {
return currentSlide;
},
getScale: function() {
return scale;
},
getConfig: function() {
return config;
},
getQueryHash: function() {
var query = {};
location.search.replace( /[A-Z0-9]+?=([\w\.%-]*)/gi, function(a) {
query[ a.split( '=' ).shift() ] = a.split( '=' ).pop();
} );
for( var i in query ) {
var value = query[ i ];
query[ i ] = deserialize( unescape( value ) );
}
return query;
},
isFirstSlide: function() {
return ( indexh === 0 && indexv === 0 );
},
isLastSlide: function() {
if( currentSlide ) {
if( currentSlide.nextElementSibling ) return false;
if( isVerticalSlide( currentSlide ) && currentSlide.parentNode.nextElementSibling ) return false;
return true;
}
return false;
},
isReady: function() {
return loaded;
},
addEventListener: function( type, listener, useCapture ) {
if( 'addEventListener' in window ) {
( dom.wrapper || document.querySelector( '.reveal' ) ).addEventListener( type, listener, useCapture );
}
},
removeEventListener: function( type, listener, useCapture ) {
if( 'addEventListener' in window ) {
( dom.wrapper || document.querySelector( '.reveal' ) ).removeEventListener( type, listener, useCapture );
}
},
triggerKey: function( keyCode ) {
onDocumentKeyDown( { keyCode: keyCode } );
},
registerKeyboardShortcut: function( key, value ) {
keyboardShortcuts[key] = value;
}
};
return Reveal;
}));
