* http://lab.hakim.se/reveal-js
* MIT licensed
*
- * Copyright (C) 2011-2012 Hakim El Hattab, http://hakim.se
+ * Copyright (C) 2013 Hakim El Hattab, http://hakim.se
*/
var Reveal = (function(){
// Configurations defaults, can be overridden at initialization time
config = {
+
+ // The "normal" size of the presentation, aspect ratio will be preserved
+ // when the presentation is scaled to fit different resolutions
+ width: 960,
+ height: 700,
+
+ // Factor of the display size that should remain empty around the content
+ margin: 0.1,
+
+ // Bounds for smallest/largest possible scale to apply to content
+ minScale: 0.2,
+ maxScale: 1.0,
+
// Display controls in the bottom right corner
controls: true,
// Enable the slide overview mode
overview: true,
- // Vertical centering of slides
+ // Vertical centring of slides
center: true,
+ // Enables touch navigation on devices with touch input
+ touch: true,
+
// Loop the presentation
loop: false,
// Transition style
transition: 'default', // default/cube/page/concave/zoom/linear/fade/none
+ // Transition speed
+ transitionSpeed: 'default', // default/fast/slow
+
// Script dependencies to load
dependencies: []
},
- // Stores if the next slide should be shown automatically
- // after n milliseconds
- autoSlide = config.autoSlide,
+ // The current auto-slide duration
+ autoSlide = 0,
- // The horizontal and verical index of the currently active slide
+ // The horizontal and vertical index of the currently active slide
indexh = 0,
indexv = 0,
// all current slides.
state = [],
+ // The current scale of the presentation (see width/height config)
+ scale = 1,
+
// Cached references to DOM elements
dom = {},
'OPerspective' in document.body.style ||
'perspective' in document.body.style,
+ // Detect support for CSS 2D transforms
supports2DTransforms = 'WebkitTransform' in document.body.style ||
'MozTransform' in document.body.style ||
'msTransform' in document.body.style ||
// Delays updates to the URL due to a Chrome thumbnailer bug
writeURLTimeout = 0,
- // A delay used to ativate the overview mode
+ // A delay used to activate the overview mode
activateOverviewTimeout = 0,
- // A delay used to deativate the overview mode
+ // A delay used to deactivate the overview mode
deactivateOverviewTimeout = 0,
+ // Flags if the interaction event listeners are bound
+ eventsAreBound = false,
+
// Holds information about the currently ongoing touch input
touch = {
startX: 0,
* Starts up the presentation if the client is capable.
*/
function initialize( options ) {
- if( ( !supports2DTransforms && !supports3DTransforms ) ) {
+
+ if( !supports2DTransforms && !supports3DTransforms ) {
document.body.setAttribute( 'class', 'no-transforms' );
// If the browser doesn't support core features we won't be
* not found, it is created.
*/
function setupDOM() {
+
// Cache references to key DOM elements
dom.theme = document.querySelector( '#theme' );
dom.wrapper = document.querySelector( '.reveal' );
dom.slides = document.querySelector( '.reveal .slides' );
// Progress bar
- if( !dom.wrapper.querySelector( '.progress' ) && config.progress ) {
+ if( !dom.wrapper.querySelector( '.progress' ) ) {
var progressElement = document.createElement( 'div' );
progressElement.classList.add( 'progress' );
progressElement.innerHTML = '<span></span>';
}
// Arrow controls
- if( !dom.wrapper.querySelector( '.controls' ) && config.controls ) {
+ if( !dom.wrapper.querySelector( '.controls' ) ) {
var controlsElement = document.createElement( 'aside' );
controlsElement.classList.add( 'controls' );
controlsElement.innerHTML = '<div class="navigate-left"></div>' +
dom.controlsPrev = toArray( document.querySelectorAll( '.navigate-prev' ) );
dom.controlsNext = toArray( document.querySelectorAll( '.navigate-next' ) );
}
+
}
/**
* Hides the address bar if we're on a mobile device.
*/
function hideAddressBar() {
- if( navigator.userAgent.match( /(iphone|ipod)/i ) ) {
- // Give the page some scrollable overflow
- document.documentElement.style.overflow = 'scroll';
- document.body.style.height = '120%';
+ if( /iphone|ipod|android/gi.test( navigator.userAgent ) && !/crios/gi.test( navigator.userAgent ) ) {
// Events that should trigger the address bar to hide
window.addEventListener( 'load', removeAddressBar, false );
window.addEventListener( 'orientationchange', removeAddressBar, false );
}
+
}
/**
* will load after reveal.js has been started up.
*/
function load() {
+
var scripts = [],
scriptsAsync = [];
}
}
- // Called once synchronous scritps finish loading
+ // Called once synchronous scripts finish loading
function proceed() {
if( scriptsAsync.length ) {
// Load asynchronous scripts
else {
proceed();
}
+
}
/**
* to the current URL deeplink if there is one.
*/
function start() {
+
// Make sure we've got all the DOM elements we need
setupDOM();
- // Subscribe to input
- addEventListeners();
-
// Updates the presentation to match the current configuration values
configure();
- // Force an initial layout, will thereafter be invoked as the window
- // is resized
- layout();
-
// Read the initial hash
readURL();
- // Start auto-sliding if it's enabled
- cueAutoSlide();
-
// Notify listeners that the presentation is ready but use a 1ms
// timeout to ensure it's not fired synchronously after #initialize()
setTimeout( function() {
'currentSlide': currentSlide
} );
}, 1 );
+
}
/**
* Applies the configuration settings from the config object.
*/
- function configure() {
- if( supports3DTransforms === false ) {
- config.transition = 'linear';
- }
+ function configure( options ) {
- if( config.controls && dom.controls ) {
- dom.controls.style.display = 'block';
- }
+ dom.wrapper.classList.remove( config.transition );
- if( config.progress && dom.progress ) {
- dom.progress.style.display = 'block';
+ // New config options may be passed when this method
+ // is invoked through the API after initialization
+ if( typeof options === 'object' ) extend( config, options );
+
+ // Force linear transition based on browser capabilities
+ if( supports3DTransforms === false ) config.transition = 'linear';
+
+ dom.wrapper.classList.add( config.transition );
+
+ dom.wrapper.setAttribute( 'data-transition-speed', config.transitionSpeed );
+
+ if( dom.controls ) {
+ dom.controls.style.display = ( config.controls && dom.controls ) ? 'block' : 'none';
}
- if( config.transition !== 'default' ) {
- dom.wrapper.classList.add( config.transition );
+ if( dom.progress ) {
+ dom.progress.style.display = ( config.progress && dom.progress ) ? 'block' : 'none';
}
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.mouseWheel ) {
document.addEventListener( 'DOMMouseScroll', onDocumentMouseScroll, false ); // FF
document.addEventListener( 'mousewheel', onDocumentMouseScroll, false );
}
+ else {
+ document.removeEventListener( 'DOMMouseScroll', onDocumentMouseScroll, false ); // FF
+ document.removeEventListener( 'mousewheel', onDocumentMouseScroll, false );
+ }
// 3D links
if( config.rollingLinks ) {
- linkify();
+ enable3DLinks();
+ }
+ else {
+ disable3DLinks();
}
// Load the theme in the config, if it's not already loaded
dom.theme.setAttribute( 'href', themeURL );
}
}
+
+ postConfigure();
+
+ }
+
+ /**
+ * Updates various parts of the presentatio after the
+ * configuration has changed.
+ */
+ function postConfigure() {
+
+ // Subscribe to input
+ removeEventListeners();
+ addEventListeners();
+
+ // Force a layout to make sure the current config is accounted for
+ layout();
+
+ // Reflect the current autoSlide value
+ autoSlide = config.autoSlide;
+
+ // Start auto-sliding if it's enabled
+ cueAutoSlide();
+
}
/**
* Binds all event listeners.
*/
function addEventListeners() {
- document.addEventListener( 'touchstart', onDocumentTouchStart, false );
- document.addEventListener( 'touchmove', onDocumentTouchMove, false );
- document.addEventListener( 'touchend', onDocumentTouchEnd, false );
+
+ 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 );
+
+ // Support pointer-style touch interaction as well
+ 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 );
}
if ( config.progress && dom.progress ) {
- dom.progress.addEventListener( 'click', preventAndForward( onProgressClick ), false );
+ dom.progress.addEventListener( 'click', onProgressClicked, false );
}
if ( config.controls && dom.controls ) {
- var actionEvent = 'ontouchstart' in window ? 'touchstart' : 'click';
- dom.controlsLeft.forEach( function( el ) { el.addEventListener( actionEvent, preventAndForward( navigateLeft ), false ); } );
- dom.controlsRight.forEach( function( el ) { el.addEventListener( actionEvent, preventAndForward( navigateRight ), false ); } );
- dom.controlsUp.forEach( function( el ) { el.addEventListener( actionEvent, preventAndForward( navigateUp ), false ); } );
- dom.controlsDown.forEach( function( el ) { el.addEventListener( actionEvent, preventAndForward( navigateDown ), false ); } );
- dom.controlsPrev.forEach( function( el ) { el.addEventListener( actionEvent, preventAndForward( navigatePrev ), false ); } );
- dom.controlsNext.forEach( function( el ) { el.addEventListener( actionEvent, preventAndForward( navigateNext ), false ); } );
+ [ 'touchstart', 'click' ].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 ); } );
+ } );
}
+
}
/**
* Unbinds all event listeners.
*/
function removeEventListeners() {
+
+ eventsAreBound = false;
+
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 );
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.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', preventAndForward( onProgressClick ), false );
+ dom.progress.removeEventListener( 'click', onProgressClicked, false );
}
if ( config.controls && dom.controls ) {
- var actionEvent = 'ontouchstart' in window ? 'touchstart' : 'click';
- dom.controlsLeft.forEach( function( el ) { el.removeEventListener( actionEvent, preventAndForward( navigateLeft ), false ); } );
- dom.controlsRight.forEach( function( el ) { el.removeEventListener( actionEvent, preventAndForward( navigateRight ), false ); } );
- dom.controlsUp.forEach( function( el ) { el.removeEventListener( actionEvent, preventAndForward( navigateUp ), false ); } );
- dom.controlsDown.forEach( function( el ) { el.removeEventListener( actionEvent, preventAndForward( navigateDown ), false ); } );
- dom.controlsPrev.forEach( function( el ) { el.removeEventListener( actionEvent, preventAndForward( navigatePrev ), false ); } );
- dom.controlsNext.forEach( function( el ) { el.removeEventListener( actionEvent, preventAndForward( navigateNext ), 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 ); } );
+ } );
}
+
}
/**
* If there's a conflict, object b takes precedence.
*/
function extend( a, b ) {
+
for( var i in b ) {
a[ i ] = b[ i ];
}
+
}
/**
* Converts the target object to an array.
*/
function toArray( o ) {
+
return Array.prototype.slice.call( o );
- }
- function each( targets, method, args ) {
- targets.forEach( function( el ) {
- el[method].apply( el, args );
- } );
}
/**
* @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( null, event );
- };
}
/**
* more vertical space ftw.
*/
function removeAddressBar() {
+
+ if( window.orientation === 0 ) {
+ document.documentElement.style.overflow = 'scroll';
+ document.body.style.height = '120%';
+ }
+ else {
+ document.documentElement.style.overflow = '';
+ document.body.style.height = '100%';
+ }
+
setTimeout( function() {
window.scrollTo( 0, 1 );
- }, 0 );
+ }, 10 );
+
}
/**
* 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 );
+
}
/**
* Wrap all links in 3D goodness.
*/
- function linkify() {
+ function enable3DLinks() {
+
if( supports3DTransforms && !( 'msPerspective' in document.body.style ) ) {
- var nodes = document.querySelectorAll( SLIDES_SELECTOR + ' a:not(.image)' );
+ var anchors = document.querySelectorAll( SLIDES_SELECTOR + ' a:not(.image)' );
- for( var i = 0, len = nodes.length; i < len; i++ ) {
- var node = nodes[i];
+ for( var i = 0, len = anchors.length; i < len; i++ ) {
+ var anchor = anchors[i];
- if( node.textContent && !node.querySelector( 'img' ) && ( !node.className || !node.classList.contains( node, 'roll' ) ) ) {
- var span = document.createElement('span');
- span.setAttribute('data-title', node.text);
- span.innerHTML = node.innerHTML;
+ 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;
- node.classList.add( 'roll' );
- node.innerHTML = '';
- node.appendChild(span);
+ anchor.classList.add( 'roll' );
+ anchor.innerHTML = '';
+ anchor.appendChild(span);
}
}
}
+
+ }
+
+ /**
+ * Unwrap all 3D links.
+ */
+ function disable3DLinks() {
+
+ var anchors = document.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;
+ }
+ }
+
+ }
+
+ /**
+ * Return a sorted fragments list, ordered by an increasing
+ * "data-fragment-index" attribute.
+ *
+ * Fragments will be revealed in the order that they are returned by
+ * this function, so you can use the index attributes to control the
+ * order of fragment appearance.
+ *
+ * To maintain a sensible default fragment order, fragments are presumed
+ * to be passed in document order. This function adds a "fragment-index"
+ * attribute to each node if such an attribute is not already present,
+ * and sets that attribute to an integer value which is the position of
+ * the fragment within the fragments list.
+ */
+ function sortFragments( fragments ) {
+
+ var a = toArray( fragments );
+
+ a.forEach( function( el, idx ) {
+ if( !el.hasAttribute( 'data-fragment-index' ) ) {
+ el.setAttribute( 'data-fragment-index', idx );
+ }
+ } );
+
+ a.sort( function( l, r ) {
+ return l.getAttribute( 'data-fragment-index' ) - r.getAttribute( 'data-fragment-index');
+ } );
+
+ return a;
+
}
/**
*/
function layout() {
- if( config.center ) {
+ if( dom.wrapper ) {
+
+ // Available space to scale within
+ var availableWidth = dom.wrapper.offsetWidth,
+ availableHeight = dom.wrapper.offsetHeight;
+
+ // Reduce available space by margin
+ availableWidth -= ( availableHeight * config.margin );
+ availableHeight -= ( availableHeight * config.margin );
+
+ // Dimensions of the content
+ var slideWidth = config.width,
+ slideHeight = config.height;
+
+ // Slide width may be a percentage of available width
+ if( typeof slideWidth === 'string' && /%$/.test( slideWidth ) ) {
+ slideWidth = parseInt( slideWidth, 10 ) / 100 * availableWidth;
+ }
+
+ // Slide height may be a percentage of available height
+ if( typeof slideHeight === 'string' && /%$/.test( slideHeight ) ) {
+ slideHeight = parseInt( slideHeight, 10 ) / 100 * availableHeight;
+ }
+
+ dom.slides.style.width = slideWidth + 'px';
+ dom.slides.style.height = slideHeight + 'px';
+
+ // Determine scale of content to fit within available space
+ scale = Math.min( availableWidth / slideWidth, availableHeight / slideHeight );
+
+ // Respect max/min scale settings
+ scale = Math.max( scale, config.minScale );
+ scale = Math.min( scale, config.maxScale );
+
+ // Prefer applying scale via zoom since Chrome blurs scaled content
+ // with nested transforms
+ if( typeof dom.slides.style.zoom !== 'undefined' && !navigator.userAgent.match( /(iphone|ipod|ipad|android)/gi ) ) {
+ dom.slides.style.zoom = scale;
+ }
+ // Apply scale transform as a fallback
+ else {
+ var transform = 'translate(-50%, -50%) scale('+ scale +') translate(50%, 50%)';
+
+ dom.slides.style.WebkitTransform = transform;
+ dom.slides.style.MozTransform = transform;
+ dom.slides.style.msTransform = transform;
+ dom.slides.style.OTransform = transform;
+ dom.slides.style.transform = transform;
+ }
// Select all slides, vertical and horizontal
var slides = toArray( document.querySelectorAll( SLIDES_SELECTOR ) );
- // Determine the minimum top offset for slides
- var minTop = -dom.wrapper.offsetHeight / 2;
-
for( var i = 0, len = slides.length; i < len; i++ ) {
var slide = slides[ i ];
- // Don't bother update invisible slides
+ // Don't bother updating invisible slides
if( slide.style.display === 'none' ) {
continue;
}
- // Vertical stacks are not centered since their section
- // children will be
- if( slide.classList.contains( 'stack' ) ) {
- slide.style.top = 0;
+ if( config.center ) {
+ // Vertical stacks are not centred since their section
+ // children will be
+ if( slide.classList.contains( 'stack' ) ) {
+ slide.style.top = 0;
+ }
+ else {
+ slide.style.top = Math.max( - ( slide.offsetHeight / 2 ) - 20, -slideHeight / 2 ) + 'px';
+ }
}
else {
- slide.style.top = Math.max( - ( slide.offsetHeight / 2 ) - 20, minTop ) + 'px';
+ slide.style.top = '';
}
+
}
}
}
/**
- * Stores the vertical index of a stack so that the same
- * vertical slide can be selected when navigating to and
+ * Stores the vertical index of a stack so that the same
+ * vertical slide can be selected when navigating to and
* from the stack.
- *
+ *
* @param {HTMLElement} stack The vertical stack element
* @param {int} v Index to memorize
*/
function setPreviousVerticalIndex( stack, v ) {
- if( stack ) {
+
+ if( typeof stack === 'object' && typeof stack.setAttribute === 'function' ) {
stack.setAttribute( 'data-previous-indexv', v || 0 );
}
+
}
/**
- * Retrieves the vertical index which was stored using
+ * Retrieves the vertical index which was stored using
* #setPreviousVerticalIndex() or 0 if no previous index
* exists.
*
* @param {HTMLElement} stack The vertical stack element
*/
function getPreviousVerticalIndex( stack ) {
- if( stack && stack.classList.contains( 'stack' ) ) {
+
+ if( typeof stack === 'object' && typeof stack.setAttribute === 'function' && stack.classList.contains( 'stack' ) ) {
return parseInt( stack.getAttribute( 'data-previous-indexv' ) || 0, 10 );
}
return 0;
+
}
/**
// Only proceed if enabled in config
if( config.overview ) {
+ // Don't auto-slide while in overview mode
+ cancelAutoSlide();
+
+ var wasActive = dom.wrapper.classList.contains( 'overview' );
+
dom.wrapper.classList.add( 'overview' );
dom.wrapper.classList.remove( 'exit-overview' );
+
clearTimeout( activateOverviewTimeout );
clearTimeout( deactivateOverviewTimeout );
- // Not the pretties solution, but need to let the overview
- // class apply first so that slides are measured accurately
- // before we can positon them
+ // Not the pretties solution, but need to let the overview
+ // class apply first so that slides are measured accurately
+ // before we can position them
activateOverviewTimeout = setTimeout( function(){
var horizontalSlides = document.querySelectorAll( HORIZONTAL_SLIDES_SELECTOR );
layout();
+ if( !wasActive ) {
+ // Notify observers of the overview showing
+ dispatchEvent( 'overviewshown', {
+ 'indexh': indexh,
+ 'indexv': indexv,
+ 'currentSlide': currentSlide
+ } );
+ }
+
}, 10 );
}
clearTimeout( deactivateOverviewTimeout );
dom.wrapper.classList.remove( 'overview' );
+
// Temporarily add a class so that transitions can do different things
// depending on whether they are exiting/entering overview, or just
// moving from slide to slide
dom.wrapper.classList.add( 'exit-overview' );
+
deactivateOverviewTimeout = setTimeout( function () {
dom.wrapper.classList.remove( 'exit-overview' );
}, 10);
slide( indexh, indexv );
+ cueAutoSlide();
+
+ // Notify observers of the overview hiding
+ dispatchEvent( 'overviewhidden', {
+ 'indexh': indexh,
+ 'indexv': indexv,
+ 'currentSlide': currentSlide
+ } );
+
}
}
* overview is open, false means it's closed.
*/
function toggleOverview( override ) {
+
if( typeof override === 'boolean' ) {
override ? activateOverview() : deactivateOverview();
}
else {
- isOverviewActive() ? deactivateOverview() : activateOverview();
+ isOverview() ? deactivateOverview() : activateOverview();
}
+
}
/**
* @return {Boolean} true if the overview is active,
* false otherwise
*/
- function isOverviewActive() {
+ function isOverview() {
+
return dom.wrapper.classList.contains( 'overview' );
+
}
/**
* @see https://developer.mozilla.org/en-US/docs/DOM/Using_fullscreen_mode
*/
function enterFullscreen() {
+
var element = document.body;
// Check which implementation is available
if( requestMethod ) {
requestMethod.apply( element );
}
+
}
/**
* black.
*/
function pause() {
+
+ var wasPaused = dom.wrapper.classList.contains( 'paused' );
+
+ cancelAutoSlide();
dom.wrapper.classList.add( 'paused' );
+
+ if( wasPaused === false ) {
+ dispatchEvent( 'paused' );
+ }
+
}
/**
* Exits from the paused mode.
*/
function resume() {
+
+ var wasPaused = dom.wrapper.classList.contains( 'paused' );
dom.wrapper.classList.remove( 'paused' );
+
+ cueAutoSlide();
+
+ if( wasPaused ) {
+ dispatchEvent( 'resumed' );
+ }
+
}
/**
* Toggles the paused mode on and off.
*/
function togglePause() {
+
if( isPaused() ) {
resume();
}
else {
pause();
}
+
}
/**
* Checks if we are currently in the paused mode.
*/
function isPaused() {
+
return dom.wrapper.classList.contains( 'paused' );
+
}
/**
*
* @param {int} h Horizontal index of the target slide
* @param {int} v Vertical index of the target slide
- * @param {int} f Optional index of a fragment within the
+ * @param {int} f Optional index of a fragment within the
* target slide to activate
+ * @param {int} o Optional origin for use in multimaster environments
*/
- function slide( h, v, f ) {
+ function slide( h, v, f, o ) {
+
// Remember where we were at before
previousSlide = currentSlide;
// Query all horizontal slides in the deck
var horizontalSlides = document.querySelectorAll( HORIZONTAL_SLIDES_SELECTOR );
- // If no vertical index is specified and the upcoming slide is a
+ // If no vertical index is specified and the upcoming slide is a
// stack, resume at its previous vertical index
if( v === undefined ) {
v = getPreviousVerticalIndex( horizontalSlides[ h ] );
}
- // If we were on a vertical stack, remember what vertical index
+ // If we were on a vertical stack, remember what vertical index
// it was on so we can resume at the same position when returning
if( previousSlide && previousSlide.parentNode && previousSlide.parentNode.classList.contains( 'stack' ) ) {
setPreviousVerticalIndex( previousSlide.parentNode, indexv );
dispatchEvent( state[i] );
}
- // Clean up the remaints of the previous state
+ // Clean up the remains of the previous state
while( stateBefore.length ) {
document.documentElement.classList.remove( stateBefore.pop() );
}
// If the overview is active, re-activate it to update positions
- if( isOverviewActive() ) {
+ if( isOverview() ) {
activateOverview();
}
// Show fragment, if specified
if( typeof f !== 'undefined' ) {
- var fragments = currentSlide.querySelectorAll( '.fragment' );
+ var fragments = sortFragments( currentSlide.querySelectorAll( '.fragment' ) );
toArray( fragments ).forEach( function( fragment, indexf ) {
if( indexf < f ) {
'indexh': indexh,
'indexv': indexv,
'previousSlide': previousSlide,
- 'currentSlide': currentSlide
+ 'currentSlide': currentSlide,
+ 'origin': o
} );
}
else {
if( previousSlide ) {
previousSlide.classList.remove( 'present' );
- // Reset all slides upon navigate to home
- // Issue: #285
- if ( document.querySelector( HOME_SLIDE_SELECTOR ).classList.contains( 'present' ) ) {
- // Launch async task
- setTimeout( function () {
- var slides = toArray( document.querySelectorAll( HORIZONTAL_SLIDES_SELECTOR + '.stack') ), i;
- for( i in slides ) {
- if( slides[i] ) {
- // Reset stack
- setPreviousVerticalIndex( slides[i], 0 );
- }
- }
- }, 0 );
- }
+ // Reset all slides upon navigate to home
+ // Issue: #285
+ if ( document.querySelector( HOME_SLIDE_SELECTOR ).classList.contains( 'present' ) ) {
+ // Launch async task
+ setTimeout( function () {
+ var slides = toArray( document.querySelectorAll( HORIZONTAL_SLIDES_SELECTOR + '.stack') ), i;
+ for( i in slides ) {
+ if( slides[i] ) {
+ // Reset stack
+ setPreviousVerticalIndex( slides[i], 0 );
+ }
+ }
+ }, 0 );
+ }
}
updateControls();
updateProgress();
+
}
/**
* bounds.
*/
function updateSlides( selector, index ) {
+
// Select all slides and convert the NodeList result to
// an array
var slides = toArray( document.querySelectorAll( selector ) ),
// Optimization; hide all slides that are three or more steps
// away from the present slide
- if( isOverviewActive() === false ) {
+ if( isOverview() === false ) {
// The distance loops so that it measures 1 between the first
// and last slides
var distance = Math.abs( ( index - i ) % ( slidesLength - 3 ) ) || 0;
var slideAutoSlide = slides[index].getAttribute( 'data-autoslide' );
if( slideAutoSlide ) {
autoSlide = parseInt( slideAutoSlide, 10 );
- }
+ }
else {
autoSlide = config.autoSlide;
}
* Updates the progress bar to reflect the current slide.
*/
function updateProgress() {
+
// Update progress if enabled
if( config.progress && dom.progress ) {
dom.progressbar.style.width = ( pastCount / ( totalCount - 1 ) ) * window.innerWidth + 'px';
}
+
}
/**
* Updates the state of all control/navigation arrows.
*/
function updateControls() {
+
if ( config.controls && dom.controls ) {
var routes = availableRoutes();
if( routes.right || routes.down ) dom.controlsNext.forEach( function( el ) { el.classList.add( 'enabled' ); } );
}
+
}
/**
* @return {Object} containing four booleans: left/right/up/down
*/
function availableRoutes() {
+
var horizontalSlides = document.querySelectorAll( HORIZONTAL_SLIDES_SELECTOR ),
verticalSlides = document.querySelectorAll( VERTICAL_SLIDES_SELECTOR );
return {
- left: indexh > 0,
- right: indexh < horizontalSlides.length - 1,
+ left: indexh > 0 || config.loop,
+ right: indexh < horizontalSlides.length - 1 || config.loop,
up: indexv > 0,
down: indexv < verticalSlides.length - 1
};
+
}
/**
* Reads the current URL (hash) and navigates accordingly.
*/
function readURL() {
+
var hash = window.location.hash;
// Attempt to parse the hash as either an index or name
slide( h, v );
}
+
}
/**
* Updates the page URL (hash) to reflect the current
* state.
*
- * @param {Number} delay The time in ms to wait before
+ * @param {Number} delay The time in ms to wait before
* writing the hash
*/
function writeURL( delay ) {
+
if( config.history ) {
// Make sure there's never more than one timeout running
window.location.hash = url;
}
}
+
}
/**
* @return {Object} { h: <int>, v: <int> }
*/
function getIndices( slide ) {
+
// By default, return the current indices
var h = indexh,
v = indexv;
}
return { h: h, v: v };
+
}
/**
* false otherwise
*/
function nextFragment() {
+
// Vertical slides:
if( document.querySelector( VERTICAL_SLIDES_SELECTOR + '.present' ) ) {
- var verticalFragments = document.querySelectorAll( VERTICAL_SLIDES_SELECTOR + '.present .fragment:not(.visible)' );
+ var verticalFragments = sortFragments( document.querySelectorAll( VERTICAL_SLIDES_SELECTOR + '.present .fragment:not(.visible)' ) );
+
if( verticalFragments.length ) {
verticalFragments[0].classList.add( 'visible' );
}
// Horizontal slides:
else {
- var horizontalFragments = document.querySelectorAll( HORIZONTAL_SLIDES_SELECTOR + '.present .fragment:not(.visible)' );
+ var horizontalFragments = sortFragments( document.querySelectorAll( HORIZONTAL_SLIDES_SELECTOR + '.present .fragment:not(.visible)' ) );
+
if( horizontalFragments.length ) {
horizontalFragments[0].classList.add( 'visible' );
}
return false;
+
}
/**
* false otherwise
*/
function previousFragment() {
+
// Vertical slides:
if( document.querySelector( VERTICAL_SLIDES_SELECTOR + '.present' ) ) {
- var verticalFragments = document.querySelectorAll( VERTICAL_SLIDES_SELECTOR + '.present .fragment.visible' );
+ var verticalFragments = sortFragments( document.querySelectorAll( VERTICAL_SLIDES_SELECTOR + '.present .fragment.visible' ) );
+
if( verticalFragments.length ) {
verticalFragments[ verticalFragments.length - 1 ].classList.remove( 'visible' );
}
// Horizontal slides:
else {
- var horizontalFragments = document.querySelectorAll( HORIZONTAL_SLIDES_SELECTOR + '.present .fragment.visible' );
+ var horizontalFragments = sortFragments( document.querySelectorAll( HORIZONTAL_SLIDES_SELECTOR + '.present .fragment.visible' ) );
+
if( horizontalFragments.length ) {
horizontalFragments[ horizontalFragments.length - 1 ].classList.remove( 'visible' );
}
return false;
+
}
/**
* Cues a new automated slide if enabled in the config.
*/
function cueAutoSlide() {
+
clearTimeout( autoSlideTimeout );
// Cue the next auto-slide if enabled
- if( autoSlide ) {
+ if( autoSlide && !isPaused() && !isOverview() ) {
autoSlideTimeout = setTimeout( navigateNext, autoSlide );
}
+
+ }
+
+ /**
+ * Cancels any ongoing request to auto-slide.
+ */
+ function cancelAutoSlide() {
+
+ clearTimeout( autoSlideTimeout );
+
}
function navigateLeft() {
+
// Prioritize hiding fragments
- if( availableRoutes().left && isOverviewActive() || previousFragment() === false ) {
+ if( availableRoutes().left && ( isOverview() || previousFragment() === false ) ) {
slide( indexh - 1 );
}
+
}
function navigateRight() {
+
// Prioritize revealing fragments
- if( availableRoutes().right && isOverviewActive() || nextFragment() === false ) {
+ if( availableRoutes().right && ( isOverview() || nextFragment() === false ) ) {
slide( indexh + 1 );
}
+
}
function navigateUp() {
+
// Prioritize hiding fragments
- if( availableRoutes().up && isOverviewActive() || previousFragment() === false ) {
+ if( availableRoutes().up && isOverview() || previousFragment() === false ) {
slide( indexh, indexv - 1 );
}
+
}
function navigateDown() {
+
// Prioritize revealing fragments
- if( availableRoutes().down && isOverviewActive() || nextFragment() === false ) {
+ if( availableRoutes().down && isOverview() || nextFragment() === false ) {
slide( indexh, indexv + 1 );
}
+
}
/**
* 3) Previous horizontal slide
*/
function navigatePrev() {
+
// Prioritize revealing fragments
if( previousFragment() === false ) {
if( availableRoutes().up ) {
if( previousSlide ) {
indexv = ( previousSlide.querySelectorAll( 'section' ).length + 1 ) || undefined;
indexh --;
- slide();
+ slide( indexh, indexv );
}
}
}
+
}
/**
* 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();
+
}
* @param {Object} event
*/
function onDocumentKeyDown( event ) {
- // Check if there's a focused element that could be using
+
+ // Check if there's a focused element that could be using
// the keyboard
var activeElement = document.activeElement;
var hasFocus = !!( document.activeElement && ( document.activeElement.type || document.activeElement.href || document.activeElement.contentEditable !== 'inherit' ) );
- // Disregard the event if there's a focused element or a
+ // Disregard the event if there's a focused element or a
// keyboard modifier key is present
- if ( hasFocus || event.shiftKey || event.altKey || event.ctrlKey || event.metaKey ) return;
+ if( hasFocus || (event.shiftKey && event.keyCode !== 32) || event.altKey || event.ctrlKey || event.metaKey ) return;
var triggered = true;
+ // while paused only allow "unpausing" keyboard events (b and .)
+ if( isPaused() && [66,190,191].indexOf( event.keyCode ) === -1 ) {
+ return false;
+ }
+
switch( event.keyCode ) {
// p, page up
case 80: case 33: navigatePrev(); break;
// end
case 35: slide( Number.MAX_VALUE ); break;
// space
- case 32: isOverviewActive() ? deactivateOverview() : navigateNext(); break;
+ case 32: isOverview() ? deactivateOverview() : event.shiftKey ? navigatePrev() : navigateNext(); break;
// return
- case 13: isOverviewActive() ? deactivateOverview() : triggered = false; break;
- // b, period
- case 66: case 190: togglePause(); break;
+ case 13: isOverview() ? deactivateOverview() : triggered = false; break;
+ // b, period, Logitech presenter tools "black screen" button
+ case 66: case 190: case 191: togglePause(); break;
// f
case 70: enterFullscreen(); break;
default:
}
/**
- * Handler for the document level 'touchstart' event,
- * enables support for swipe and pinch gestures.
+ * Handler for the 'touchstart' event, enables support for
+ * swipe and pinch gestures.
*/
- function onDocumentTouchStart( event ) {
+ function onTouchStart( event ) {
+
touch.startX = event.touches[0].clientX;
touch.startY = event.touches[0].clientY;
touch.startCount = event.touches.length;
y: touch.startY
} );
}
+
}
/**
- * Handler for the document level 'touchmove' event.
+ * Handler for the 'touchmove' event.
*/
- function onDocumentTouchMove( event ) {
+ function onTouchMove( event ) {
+
// Each touch should only trigger one action
if( !touch.handled ) {
var currentX = event.touches[0].clientX;
else if( navigator.userAgent.match( /android/gi ) ) {
event.preventDefault();
}
+
}
/**
- * Handler for the document level 'touchend' event.
+ * Handler for the 'touchend' event.
*/
- function onDocumentTouchEnd( event ) {
+ function onTouchEnd( event ) {
+
touch.handled = false;
+
+ }
+
+ /**
+ * Convert pointer down to touch start.
+ */
+ function onPointerDown( event ) {
+
+ if( event.pointerType === event.MSPOINTER_TYPE_TOUCH ) {
+ event.touches = [{ clientX: event.clientX, clientY: event.clientY }];
+ onTouchStart( event );
+ }
+
+ }
+
+ /**
+ * Convert pointer move to touch move.
+ */
+ function onPointerMove( event ) {
+
+ if( event.pointerType === event.MSPOINTER_TYPE_TOUCH ) {
+ event.touches = [{ clientX: event.clientX, clientY: event.clientY }];
+ onTouchMove( event );
+ }
+
+ }
+
+ /**
+ * Convert pointer up to touch end.
+ */
+ function onPointerUp( event ) {
+
+ if( event.pointerType === event.MSPOINTER_TYPE_TOUCH ) {
+ event.touches = [{ clientX: event.clientX, clientY: event.clientY }];
+ onTouchEnd( event );
+ }
+
}
/**
* Handles mouse wheel scrolling, throttled to avoid skipping
* multiple slides.
*/
- function onDocumentMouseScroll( event ){
+ function onDocumentMouseScroll( event ) {
+
clearTimeout( mouseWheelTimeout );
mouseWheelTimeout = setTimeout( function() {
navigatePrev();
}
}, 100 );
+
}
/**
*
* ( clickX / presentationWidth ) * numberOfSlides
*/
- function onProgressClick( event ) {
+ function onProgressClicked( event ) {
+
+ event.preventDefault();
+
var slidesTotal = toArray( document.querySelectorAll( HORIZONTAL_SLIDES_SELECTOR ) ).length;
var slideIndex = Math.floor( ( event.clientX / dom.wrapper.offsetWidth ) * slidesTotal );
slide( slideIndex );
+
}
+ /**
+ * Event handler for navigation control buttons.
+ */
+ function onNavigateLeftClicked( event ) { event.preventDefault(); navigateLeft(); }
+ function onNavigateRightClicked( event ) { event.preventDefault(); navigateRight(); }
+ function onNavigateUpClicked( event ) { event.preventDefault(); navigateUp(); }
+ function onNavigateDownClicked( event ) { event.preventDefault(); navigateDown(); }
+ function onNavigatePrevClicked( event ) { event.preventDefault(); navigatePrev(); }
+ function onNavigateNextClicked( event ) { event.preventDefault(); navigateNext(); }
+
/**
* Handler for the window level 'hashchange' event.
*/
function onWindowHashChange( event ) {
+
readURL();
+
}
/**
* Handler for the window level 'resize' event.
*/
function onWindowResize( event ) {
+
layout();
+
}
/**
* 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( isOverviewActive() ) {
+ if( eventsAreBound && isOverview() ) {
event.preventDefault();
- deactivateOverview();
-
var element = event.target;
while( element && !element.nodeName.match( /section/gi ) ) {
element = element.parentNode;
}
- if( element.nodeName.match( /section/gi ) ) {
- var h = parseInt( element.getAttribute( 'data-index-h' ), 10 ),
- v = parseInt( element.getAttribute( 'data-index-v' ), 10 );
+ 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 );
+ }
- slide( h, v );
}
}
+
}
return {
initialize: initialize,
+ configure: configure,
// Navigation methods
slide: slide,
navigatePrev: navigatePrev,
navigateNext: navigateNext,
+ // Forces an update in slide layout
+ layout: layout,
+
+ // Returns an object with the available routes as booleans (left/right/top/bottom)
+ availableRoutes: availableRoutes,
+
// Toggles the overview mode on/off
toggleOverview: toggleOverview,
+ // Toggles the "black screen" mode on/off
+ togglePause: togglePause,
+
+ // State checks
+ isOverview: isOverview,
+ isPaused: isPaused,
+
// Adds or removes all internal event listeners (such as keyboard)
addEventListeners: addEventListeners,
removeEventListeners: removeEventListeners,
// Returns the indices of the current, or specified, slide
getIndices: getIndices,
+ // Returns the slide at the specified index, y is optional
+ getSlide: function( x, y ) {
+ var horizontalSlide = document.querySelectorAll( HORIZONTAL_SLIDES_SELECTOR )[ x ];
+ var verticalSlides = horizontalSlide && horizontalSlide.querySelectorAll( 'section' );
+
+ if( typeof y !== 'undefined' ) {
+ return verticalSlides ? verticalSlides[ y ] : undefined;
+ }
+
+ return horizontalSlide;
+ },
+
// Returns the previous slide element, may be null
getPreviousSlide: function() {
return previousSlide;
return currentSlide;
},
+ // Returns the current scale of the presentation content
+ getScale: function() {
+ return scale;
+ },
+
+ // Returns the current configuration object
+ getConfig: function() {
+ return config;
+ },
+
+ // Returns an index (1-based) of the current fragment
+ getCurrentFragmentIndex : function() {
+ if( currentSlide ) {
+ var visibleFragments = currentSlide.querySelectorAll( '.fragment.visible' );
+
+ if( visibleFragments.length ) {
+ return visibleFragments.length;
+ }
+ }
+ },
+
// Helper method, retrieves query string as a key/value hash
getQueryHash: function() {
var query = {};
return query;
},
+ // Returns true if we're currently on the first slide
+ isFirstSlide: function() {
+ return document.querySelector( SLIDES_SELECTOR + '.past' ) == null ? true : false;
+ },
+
+ // Returns true if we're currently on the last slide
+ isLastSlide: function() {
+ if( currentSlide && currentSlide.classList.contains( '.stack' ) ) {
+ return currentSlide.querySelector( SLIDES_SELECTOR + '.future' ) == null ? true : false;
+ }
+ else {
+ return document.querySelector( SLIDES_SELECTOR + '.future' ) == null ? true : false;
+ }
+ },
+
// Forward event binding to the reveal DOM element
addEventListener: function( type, listener, useCapture ) {
if( 'addEventListener' in window ) {
}
};
-})();
\ No newline at end of file
+})();
projects / reveal.js.git / blobdiff