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-/*!
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- * reveal.js 2.1 r37
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- * http://lab.hakim.se/reveal-js
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- * MIT licensed
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- *
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- * Copyright (C) 2011-2012 Hakim El Hattab, http://hakim.se
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- */
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-var Reveal = (function(){
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-
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- 'use strict';
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-
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- var HORIZONTAL_SLIDES_SELECTOR = '.reveal .slides>section',
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- VERTICAL_SLIDES_SELECTOR = '.reveal .slides>section.present>section',
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-
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- // Configurations defaults, can be overridden at initialization time
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- config = {
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- // Display controls in the bottom right corner
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- controls: true,
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-
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- // Display a presentation progress bar
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- progress: true,
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-
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- // Push each slide change to the browser history
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- history: false,
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-
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- // Enable keyboard shortcuts for navigation
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- keyboard: true,
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-
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- // Enable the slide overview mode
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- overview: true,
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-
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- // Loop the presentation
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- loop: false,
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-
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- // Number of milliseconds between automatically proceeding to the
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- // next slide, disabled when set to 0, this value can be overwritten
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- // by using a data-autoslide attribute on your slides
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- autoSlide: 0,
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-
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- // Enable slide navigation via mouse wheel
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- mouseWheel: true,
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-
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- // Apply a 3D roll to links on hover
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- rollingLinks: true,
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-
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- // Transition style (see /css/theme)
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- theme: null,
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-
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- // Transition style
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- transition: 'default', // default/cube/page/concave/zoom/linear/none
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-
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- // Script dependencies to load
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- dependencies: []
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- },
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-
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- // Stores if the next slide should be shown automatically
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- // after n milliseconds
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- autoSlide = config.autoSlide,
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-
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- // The horizontal and verical index of the currently active slide
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- indexh = 0,
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- indexv = 0,
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-
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- // The previous and current slide HTML elements
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- previousSlide,
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- currentSlide,
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-
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- // Slides may hold a data-state attribute which we pick up and apply
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- // as a class to the body. This list contains the combined state of
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- // all current slides.
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- state = [],
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-
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- // Cached references to DOM elements
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- dom = {},
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-
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- // Detect support for CSS 3D transforms
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- supports3DTransforms = 'WebkitPerspective' in document.body.style ||
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- 'MozPerspective' in document.body.style ||
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- 'msPerspective' in document.body.style ||
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- 'OPerspective' in document.body.style ||
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- 'perspective' in document.body.style,
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-
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- supports2DTransforms = 'WebkitTransform' in document.body.style ||
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- 'MozTransform' in document.body.style ||
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- 'msTransform' in document.body.style ||
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- 'OTransform' in document.body.style ||
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- 'transform' in document.body.style,
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-
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- // Throttles mouse wheel navigation
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- mouseWheelTimeout = 0,
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-
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- // An interval used to automatically move on to the next slide
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- autoSlideTimeout = 0,
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-
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- // Delays updates to the URL due to a Chrome thumbnailer bug
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- writeURLTimeout = 0,
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-
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- // Holds information about the currently ongoing touch input
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- touch = {
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- startX: 0,
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- startY: 0,
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- startSpan: 0,
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- startCount: 0,
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- handled: false,
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- threshold: 80
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- };
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-
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- /**
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- * Starts up the presentation if the client is capable.
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- */
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- function initialize( options ) {
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- if( ( !supports2DTransforms && !supports3DTransforms ) ) {
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- document.body.setAttribute( 'class', 'no-transforms' );
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-
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- // If the browser doesn't support core features we won't be
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- // using JavaScript to control the presentation
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- return;
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- }
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-
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- // Copy options over to our config object
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- extend( config, options );
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-
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- // Hide the address bar in mobile browsers
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- hideAddressBar();
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-
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- // Loads the dependencies and continues to #start() once done
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- load();
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-
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- }
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-
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- /**
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- * Finds and stores references to DOM elements which are
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- * required by the presentation. If a required element is
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- * not found, it is created.
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- */
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- function setupDOM() {
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- // Cache references to key DOM elements
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- dom.theme = document.querySelector( '#theme' );
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- dom.wrapper = document.querySelector( '.reveal' );
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-
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- // Progress bar
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- if( !dom.wrapper.querySelector( '.progress' ) && config.progress ) {
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- var progressElement = document.createElement( 'div' );
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- progressElement.classList.add( 'progress' );
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- progressElement.innerHTML = '<span></span>';
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- dom.wrapper.appendChild( progressElement );
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- }
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-
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- // Arrow controls
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- if( !dom.wrapper.querySelector( '.controls' ) && config.controls ) {
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- var controlsElement = document.createElement( 'aside' );
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- controlsElement.classList.add( 'controls' );
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- controlsElement.innerHTML = '<div class="left"></div>' +
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- '<div class="right"></div>' +
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- '<div class="up"></div>' +
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- '<div class="down"></div>';
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- dom.wrapper.appendChild( controlsElement );
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- }
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-
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- // Presentation background element
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- if( !dom.wrapper.querySelector( '.state-background' ) ) {
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- var backgroundElement = document.createElement( 'div' );
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- backgroundElement.classList.add( 'state-background' );
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- dom.wrapper.appendChild( backgroundElement );
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- }
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-
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- // Overlay graphic which is displayed during the paused mode
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- if( !dom.wrapper.querySelector( '.pause-overlay' ) ) {
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- var pausedElement = document.createElement( 'div' );
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- pausedElement.classList.add( 'pause-overlay' );
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- dom.wrapper.appendChild( pausedElement );
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- }
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-
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- // Cache references to elements
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- dom.progress = document.querySelector( '.reveal .progress' );
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- dom.progressbar = document.querySelector( '.reveal .progress span' );
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-
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- if ( config.controls ) {
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- dom.controls = document.querySelector( '.reveal .controls' );
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- dom.controlsLeft = document.querySelector( '.reveal .controls .left' );
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- dom.controlsRight = document.querySelector( '.reveal .controls .right' );
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- dom.controlsUp = document.querySelector( '.reveal .controls .up' );
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- dom.controlsDown = document.querySelector( '.reveal .controls .down' );
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- }
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- }
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-
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- /**
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- * Hides the address bar if we're on a mobile device.
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- */
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- function hideAddressBar() {
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- if( navigator.userAgent.match( /(iphone|ipod|android)/i ) ) {
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- // Give the page some scrollable overflow
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- document.documentElement.style.overflow = 'scroll';
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- document.body.style.height = '120%';
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-
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- // Events that should trigger the address bar to hide
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- window.addEventListener( 'load', removeAddressBar, false );
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- window.addEventListener( 'orientationchange', removeAddressBar, false );
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- }
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- }
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-
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- /**
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- * Loads the dependencies of reveal.js. Dependencies are
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- * defined via the configuration option 'dependencies'
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- * and will be loaded prior to starting/binding reveal.js.
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- * Some dependencies may have an 'async' flag, if so they
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- * will load after reveal.js has been started up.
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- */
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- function load() {
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- var scripts = [],
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- scriptsAsync = [];
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-
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- for( var i = 0, len = config.dependencies.length; i < len; i++ ) {
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- var s = config.dependencies[i];
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-
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- // Load if there's no condition or the condition is truthy
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- if( !s.condition || s.condition() ) {
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- if( s.async ) {
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- scriptsAsync.push( s.src );
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- }
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- else {
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- scripts.push( s.src );
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- }
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-
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- // Extension may contain callback functions
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- if( typeof s.callback === 'function' ) {
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- head.ready( s.src.match( /([\w\d_\-]*)\.?[^\\\/]*$/i )[0], s.callback );
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- }
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- }
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- }
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-
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- // Called once synchronous scritps finish loading
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- function proceed() {
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- if( scriptsAsync.length ) {
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- // Load asynchronous scripts
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- head.js.apply( null, scriptsAsync );
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- }
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-
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- start();
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- }
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-
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- if( scripts.length ) {
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- head.ready( proceed );
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-
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- // Load synchronous scripts
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- head.js.apply( null, scripts );
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- }
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- else {
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- proceed();
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- }
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- }
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-
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- /**
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- * Starts up reveal.js by binding input events and navigating
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- * to the current URL deeplink if there is one.
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- */
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- function start() {
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- // Make sure we've got all the DOM elements we need
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- setupDOM();
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-
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- // Subscribe to input
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- addEventListeners();
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-
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- // Updates the presentation to match the current configuration values
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- configure();
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-
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- // Read the initial hash
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- readURL();
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-
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- // Start auto-sliding if it's enabled
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- cueAutoSlide();
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-
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- // Notify listeners that the presentation is ready but use a 1ms
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- // timeout to ensure it's not fired synchronously after #initialize()
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- setTimeout( function() {
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- dispatchEvent( 'ready', {
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- 'indexh': indexh,
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- 'indexv': indexv,
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- 'currentSlide': currentSlide
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- } );
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- }, 1 );
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- }
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-
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- /**
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- * Applies the configuration settings from the config object.
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- */
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- function configure() {
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- if( supports3DTransforms === false ) {
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- config.transition = 'linear';
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- }
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-
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- if( config.controls && dom.controls ) {
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- dom.controls.style.display = 'block';
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- }
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-
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- if( config.progress && dom.progress ) {
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- dom.progress.style.display = 'block';
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- }
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-
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- if( config.transition !== 'default' ) {
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- dom.wrapper.classList.add( config.transition );
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- }
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-
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- if( config.mouseWheel ) {
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- document.addEventListener( 'DOMMouseScroll', onDocumentMouseScroll, false ); // FF
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- document.addEventListener( 'mousewheel', onDocumentMouseScroll, false );
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- }
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-
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- // 3D links
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- if( config.rollingLinks ) {
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- linkify();
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- }
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-
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- // Load the theme in the config, if it's not already loaded
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- if( config.theme && dom.theme ) {
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- var themeURL = dom.theme.getAttribute( 'href' );
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- var themeFinder = /[^\/]*?(?=\.css)/;
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- var themeName = themeURL.match(themeFinder)[0];
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-
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- if( config.theme !== themeName ) {
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- themeURL = themeURL.replace(themeFinder, config.theme);
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- dom.theme.setAttribute( 'href', themeURL );
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- }
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- }
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- }
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-
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- /**
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- * Binds all event listeners.
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- */
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- function addEventListeners() {
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- document.addEventListener( 'touchstart', onDocumentTouchStart, false );
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- document.addEventListener( 'touchmove', onDocumentTouchMove, false );
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- document.addEventListener( 'touchend', onDocumentTouchEnd, false );
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- window.addEventListener( 'hashchange', onWindowHashChange, false );
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-
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- if( config.keyboard ) {
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- document.addEventListener( 'keydown', onDocumentKeyDown, false );
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- }
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-
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- if ( config.progress && dom.progress ) {
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- dom.progress.addEventListener( 'click', preventAndForward( onProgressClick ), false );
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- }
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-
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- if ( config.controls && dom.controls ) {
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- dom.controlsLeft.addEventListener( 'click', preventAndForward( navigateLeft ), false );
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- dom.controlsRight.addEventListener( 'click', preventAndForward( navigateRight ), false );
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- dom.controlsUp.addEventListener( 'click', preventAndForward( navigateUp ), false );
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- dom.controlsDown.addEventListener( 'click', preventAndForward( navigateDown ), false );
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- }
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- }
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-
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- /**
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- * Unbinds all event listeners.
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- */
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- function removeEventListeners() {
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- document.removeEventListener( 'keydown', onDocumentKeyDown, false );
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- document.removeEventListener( 'touchstart', onDocumentTouchStart, false );
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- document.removeEventListener( 'touchmove', onDocumentTouchMove, false );
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- document.removeEventListener( 'touchend', onDocumentTouchEnd, false );
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- window.removeEventListener( 'hashchange', onWindowHashChange, false );
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-
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- if ( config.progress && dom.progress ) {
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- dom.progress.removeEventListener( 'click', preventAndForward( onProgressClick ), false );
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- }
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-
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- if ( config.controls && dom.controls ) {
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- dom.controlsLeft.removeEventListener( 'click', preventAndForward( navigateLeft ), false );
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- dom.controlsRight.removeEventListener( 'click', preventAndForward( navigateRight ), false );
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- dom.controlsUp.removeEventListener( 'click', preventAndForward( navigateUp ), false );
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- dom.controlsDown.removeEventListener( 'click', preventAndForward( navigateDown ), false );
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- }
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- }
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-
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- /**
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- * Extend object a with the properties of object b.
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- * If there's a conflict, object b takes precedence.
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- */
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- function extend( a, b ) {
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- for( var i in b ) {
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- a[ i ] = b[ i ];
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- }
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- }
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-
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- /**
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- * Measures the distance in pixels between point a
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- * and point b.
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- *
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- * @param {Object} a point with x/y properties
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- * @param {Object} b point with x/y properties
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- */
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- function distanceBetween( a, b ) {
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- var dx = a.x - b.x,
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- dy = a.y - b.y;
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-
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- return Math.sqrt( dx*dx + dy*dy );
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- }
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-
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- /**
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- * Prevents an events defaults behavior calls the
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- * specified delegate.
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- *
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- * @param {Function} delegate The method to call
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- * after the wrapper has been executed
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- */
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- function preventAndForward( delegate ) {
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- return function( event ) {
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- event.preventDefault();
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- delegate.call( null, event );
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- };
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- }
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-
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- /**
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- * Causes the address bar to hide on mobile devices,
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- * more vertical space ftw.
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- */
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- function removeAddressBar() {
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- setTimeout( function() {
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- window.scrollTo( 0, 1 );
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- }, 0 );
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- }
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-
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- /**
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- * Dispatches an event of the specified type from the
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- * reveal DOM element.
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- */
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- function dispatchEvent( type, properties ) {
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- var event = document.createEvent( "HTMLEvents", 1, 2 );
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- event.initEvent( type, true, true );
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- extend( event, properties );
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- dom.wrapper.dispatchEvent( event );
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- }
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-
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- /**
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- * Wrap all links in 3D goodness.
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- */
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- function linkify() {
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- if( supports3DTransforms && !( 'msPerspective' in document.body.style ) ) {
|
|
|
- var nodes = document.querySelectorAll( '.reveal .slides section a:not(.image)' );
|
|
|
-
|
|
|
- for( var i = 0, len = nodes.length; i < len; i++ ) {
|
|
|
- var node = nodes[i];
|
|
|
-
|
|
|
- if( node.textContent && !node.querySelector( 'img' ) && ( !node.className || !node.classList.contains( node, 'roll' ) ) ) {
|
|
|
- node.classList.add( 'roll' );
|
|
|
- node.innerHTML = '<span data-title="'+ node.text +'">' + node.innerHTML + '</span>';
|
|
|
- }
|
|
|
- }
|
|
|
- }
|
|
|
- }
|
|
|
-
|
|
|
- /**
|
|
|
- * Displays the overview of slides (quick nav) by
|
|
|
- * scaling down and arranging all slide elements.
|
|
|
- *
|
|
|
- * Experimental feature, might be dropped if perf
|
|
|
- * can't be improved.
|
|
|
- */
|
|
|
- function activateOverview() {
|
|
|
-
|
|
|
- // Only proceed if enabled in config
|
|
|
- if( config.overview ) {
|
|
|
-
|
|
|
- dom.wrapper.classList.add( 'overview' );
|
|
|
-
|
|
|
- var horizontalSlides = document.querySelectorAll( HORIZONTAL_SLIDES_SELECTOR );
|
|
|
-
|
|
|
- for( var i = 0, len1 = horizontalSlides.length; i < len1; i++ ) {
|
|
|
- var hslide = horizontalSlides[i],
|
|
|
- htransform = 'translateZ(-2500px) translate(' + ( ( i - indexh ) * 105 ) + '%, 0%)';
|
|
|
-
|
|
|
- hslide.setAttribute( 'data-index-h', i );
|
|
|
- hslide.style.display = 'block';
|
|
|
- hslide.style.WebkitTransform = htransform;
|
|
|
- hslide.style.MozTransform = htransform;
|
|
|
- hslide.style.msTransform = htransform;
|
|
|
- hslide.style.OTransform = htransform;
|
|
|
- hslide.style.transform = htransform;
|
|
|
-
|
|
|
- if( !hslide.classList.contains( 'stack' ) ) {
|
|
|
- // Navigate to this slide on click
|
|
|
- hslide.addEventListener( 'click', onOverviewSlideClicked, true );
|
|
|
- }
|
|
|
-
|
|
|
- var verticalSlides = hslide.querySelectorAll( 'section' );
|
|
|
-
|
|
|
- for( var j = 0, len2 = verticalSlides.length; j < len2; j++ ) {
|
|
|
- var vslide = verticalSlides[j],
|
|
|
- vtransform = 'translate(0%, ' + ( ( j - ( i === indexh ? indexv : 0 ) ) * 105 ) + '%)';
|
|
|
-
|
|
|
- vslide.setAttribute( 'data-index-h', i );
|
|
|
- vslide.setAttribute( 'data-index-v', j );
|
|
|
- vslide.style.display = 'block';
|
|
|
- vslide.style.WebkitTransform = vtransform;
|
|
|
- vslide.style.MozTransform = vtransform;
|
|
|
- vslide.style.msTransform = vtransform;
|
|
|
- vslide.style.OTransform = vtransform;
|
|
|
- vslide.style.transform = vtransform;
|
|
|
-
|
|
|
- // Navigate to this slide on click
|
|
|
- vslide.addEventListener( 'click', onOverviewSlideClicked, true );
|
|
|
- }
|
|
|
-
|
|
|
- }
|
|
|
-
|
|
|
- }
|
|
|
-
|
|
|
- }
|
|
|
-
|
|
|
- /**
|
|
|
- * Exits the slide overview and enters the currently
|
|
|
- * active slide.
|
|
|
- */
|
|
|
- function deactivateOverview() {
|
|
|
-
|
|
|
- // Only proceed if enabled in config
|
|
|
- if( config.overview ) {
|
|
|
-
|
|
|
- dom.wrapper.classList.remove( 'overview' );
|
|
|
-
|
|
|
- // Select all slides
|
|
|
- var slides = Array.prototype.slice.call( document.querySelectorAll( '.reveal .slides section' ) );
|
|
|
-
|
|
|
- for( var i = 0, len = slides.length; i < len; i++ ) {
|
|
|
- var element = slides[i];
|
|
|
-
|
|
|
- // Resets all transforms to use the external styles
|
|
|
- element.style.WebkitTransform = '';
|
|
|
- element.style.MozTransform = '';
|
|
|
- element.style.msTransform = '';
|
|
|
- element.style.OTransform = '';
|
|
|
- element.style.transform = '';
|
|
|
-
|
|
|
- element.removeEventListener( 'click', onOverviewSlideClicked );
|
|
|
- }
|
|
|
-
|
|
|
- slide();
|
|
|
-
|
|
|
- }
|
|
|
- }
|
|
|
-
|
|
|
- /**
|
|
|
- * Toggles the slide overview mode on and off.
|
|
|
- *
|
|
|
- * @param {Boolean} override Optional flag which overrides the
|
|
|
- * toggle logic and forcibly sets the desired state. True means
|
|
|
- * overview is open, false means it's closed.
|
|
|
- */
|
|
|
- function toggleOverview( override ) {
|
|
|
- if( typeof override === 'boolean' ) {
|
|
|
- override ? activateOverview() : deactivateOverview();
|
|
|
- }
|
|
|
- else {
|
|
|
- isOverviewActive() ? deactivateOverview() : activateOverview();
|
|
|
- }
|
|
|
- }
|
|
|
-
|
|
|
- /**
|
|
|
- * Checks if the overview is currently active.
|
|
|
- *
|
|
|
- * @return {Boolean} true if the overview is active,
|
|
|
- * false otherwise
|
|
|
- */
|
|
|
- function isOverviewActive() {
|
|
|
- return dom.wrapper.classList.contains( 'overview' );
|
|
|
- }
|
|
|
-
|
|
|
- /**
|
|
|
- * Handling the fullscreen functionality via the fullscreen API
|
|
|
- *
|
|
|
- * @see http://fullscreen.spec.whatwg.org/
|
|
|
- * @see https://developer.mozilla.org/en-US/docs/DOM/Using_fullscreen_mode
|
|
|
- */
|
|
|
- function enterFullscreen() {
|
|
|
- var element = document.body;
|
|
|
-
|
|
|
- // Check which implementation is available
|
|
|
- var requestMethod = element.requestFullScreen ||
|
|
|
- element.webkitRequestFullScreen ||
|
|
|
- element.mozRequestFullScreen ||
|
|
|
- element.msRequestFullScreen;
|
|
|
-
|
|
|
- if( requestMethod ) {
|
|
|
- requestMethod.apply( element );
|
|
|
- }
|
|
|
- }
|
|
|
-
|
|
|
- /**
|
|
|
- * Enters the paused mode which fades everything on screen to
|
|
|
- * black.
|
|
|
- */
|
|
|
- function pause() {
|
|
|
- dom.wrapper.classList.add( 'paused' );
|
|
|
- }
|
|
|
-
|
|
|
- /**
|
|
|
- * Exits from the paused mode.
|
|
|
- */
|
|
|
- function resume() {
|
|
|
- dom.wrapper.classList.remove( 'paused' );
|
|
|
- }
|
|
|
-
|
|
|
- /**
|
|
|
- * 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' );
|
|
|
- }
|
|
|
-
|
|
|
- /**
|
|
|
- * Steps from the current point in the presentation to the
|
|
|
- * slide which matches the specified horizontal and vertical
|
|
|
- * indices.
|
|
|
- *
|
|
|
- * @param {int} h Horizontal index of the target slide
|
|
|
- * @param {int} v Vertical index of the target slide
|
|
|
- */
|
|
|
- function slide( h, v ) {
|
|
|
- // Remember where we were at before
|
|
|
- previousSlide = currentSlide;
|
|
|
-
|
|
|
- // Remember the state before this slide
|
|
|
- var stateBefore = state.concat();
|
|
|
-
|
|
|
- // Reset the state array
|
|
|
- state.length = 0;
|
|
|
-
|
|
|
- var indexhBefore = indexh,
|
|
|
- indexvBefore = indexv;
|
|
|
-
|
|
|
- // Activate and transition to the new slide
|
|
|
- indexh = updateSlides( HORIZONTAL_SLIDES_SELECTOR, h === undefined ? indexh : h );
|
|
|
- indexv = updateSlides( VERTICAL_SLIDES_SELECTOR, v === undefined ? indexv : v );
|
|
|
-
|
|
|
- // Apply the new state
|
|
|
- stateLoop: for( var i = 0, len = state.length; i < len; i++ ) {
|
|
|
- // Check if this state existed on the previous slide. If it
|
|
|
- // did, we will avoid adding it repeatedly.
|
|
|
- for( var j = 0; j < stateBefore.length; j++ ) {
|
|
|
- if( stateBefore[j] === state[i] ) {
|
|
|
- stateBefore.splice( j, 1 );
|
|
|
- continue stateLoop;
|
|
|
- }
|
|
|
- }
|
|
|
-
|
|
|
- document.documentElement.classList.add( state[i] );
|
|
|
-
|
|
|
- // Dispatch custom event matching the state's name
|
|
|
- dispatchEvent( state[i] );
|
|
|
- }
|
|
|
-
|
|
|
- // Clean up the remaints of the previous state
|
|
|
- while( stateBefore.length ) {
|
|
|
- document.documentElement.classList.remove( stateBefore.pop() );
|
|
|
- }
|
|
|
-
|
|
|
- // Update progress if enabled
|
|
|
- if( config.progress && dom.progress ) {
|
|
|
- dom.progressbar.style.width = ( indexh / ( document.querySelectorAll( HORIZONTAL_SLIDES_SELECTOR ).length - 1 ) ) * window.innerWidth + 'px';
|
|
|
- }
|
|
|
-
|
|
|
- // If the overview is active, re-activate it to update positions
|
|
|
- if( isOverviewActive() ) {
|
|
|
- activateOverview();
|
|
|
- }
|
|
|
-
|
|
|
- updateControls();
|
|
|
-
|
|
|
- // Update the URL hash after a delay since updating it mid-transition
|
|
|
- // is likely to cause visual lag
|
|
|
- clearTimeout( writeURLTimeout );
|
|
|
- writeURLTimeout = setTimeout( writeURL, 1500 );
|
|
|
-
|
|
|
- // Query all horizontal slides in the deck
|
|
|
- var horizontalSlides = document.querySelectorAll( HORIZONTAL_SLIDES_SELECTOR );
|
|
|
-
|
|
|
- // Find the current horizontal slide and any possible vertical slides
|
|
|
- // within it
|
|
|
- var currentHorizontalSlide = horizontalSlides[ indexh ],
|
|
|
- currentVerticalSlides = currentHorizontalSlide.querySelectorAll( 'section' );
|
|
|
-
|
|
|
- // Store references to the previous and current slides
|
|
|
- currentSlide = currentVerticalSlides[ indexv ] || currentHorizontalSlide;
|
|
|
-
|
|
|
- // Dispatch an event if the slide changed
|
|
|
- if( indexh !== indexhBefore || indexv !== indexvBefore ) {
|
|
|
- dispatchEvent( 'slidechanged', {
|
|
|
- 'indexh': indexh,
|
|
|
- 'indexv': indexv,
|
|
|
- 'previousSlide': previousSlide,
|
|
|
- 'currentSlide': currentSlide
|
|
|
- } );
|
|
|
- }
|
|
|
- else {
|
|
|
- // Ensure that the previous slide is never the same as the current
|
|
|
- previousSlide = null;
|
|
|
- }
|
|
|
-
|
|
|
- // Solves an edge case where the previous slide maintains the
|
|
|
- // 'present' class when navigating between adjacent vertical
|
|
|
- // stacks
|
|
|
- if( previousSlide ) {
|
|
|
- previousSlide.classList.remove( 'present' );
|
|
|
- }
|
|
|
- }
|
|
|
-
|
|
|
- /**
|
|
|
- * Updates one dimension of slides by showing the slide
|
|
|
- * with the specified index.
|
|
|
- *
|
|
|
- * @param {String} selector A CSS selector that will fetch
|
|
|
- * the group of slides we are working with
|
|
|
- * @param {Number} index The index of the slide that should be
|
|
|
- * shown
|
|
|
- *
|
|
|
- * @return {Number} The index of the slide that is now shown,
|
|
|
- * might differ from the passed in index if it was out of
|
|
|
- * bounds.
|
|
|
- */
|
|
|
- function updateSlides( selector, index ) {
|
|
|
- // Select all slides and convert the NodeList result to
|
|
|
- // an array
|
|
|
- var slides = Array.prototype.slice.call( document.querySelectorAll( selector ) ),
|
|
|
- slidesLength = slides.length;
|
|
|
-
|
|
|
- if( slidesLength ) {
|
|
|
-
|
|
|
- // Should the index loop?
|
|
|
- if( config.loop ) {
|
|
|
- index %= slidesLength;
|
|
|
-
|
|
|
- if( index < 0 ) {
|
|
|
- index = slidesLength + index;
|
|
|
- }
|
|
|
- }
|
|
|
-
|
|
|
- // Enforce max and minimum index bounds
|
|
|
- index = Math.max( Math.min( index, slidesLength - 1 ), 0 );
|
|
|
-
|
|
|
- for( var i = 0; i < slidesLength; i++ ) {
|
|
|
- var element = slides[i];
|
|
|
-
|
|
|
- // Optimization; hide all slides that are three or more steps
|
|
|
- // away from the present slide
|
|
|
- if( isOverviewActive() === false ) {
|
|
|
- // The distance loops so that it measures 1 between the first
|
|
|
- // and last slides
|
|
|
- var distance = Math.abs( ( index - i ) % ( slidesLength - 3 ) ) || 0;
|
|
|
-
|
|
|
- element.style.display = distance > 3 ? 'none' : 'block';
|
|
|
- }
|
|
|
-
|
|
|
- slides[i].classList.remove( 'past' );
|
|
|
- slides[i].classList.remove( 'present' );
|
|
|
- slides[i].classList.remove( 'future' );
|
|
|
-
|
|
|
- if( i < index ) {
|
|
|
- // Any element previous to index is given the 'past' class
|
|
|
- slides[i].classList.add( 'past' );
|
|
|
- }
|
|
|
- else if( i > index ) {
|
|
|
- // Any element subsequent to index is given the 'future' class
|
|
|
- slides[i].classList.add( 'future' );
|
|
|
- }
|
|
|
-
|
|
|
- // If this element contains vertical slides
|
|
|
- if( element.querySelector( 'section' ) ) {
|
|
|
- slides[i].classList.add( 'stack' );
|
|
|
- }
|
|
|
- }
|
|
|
-
|
|
|
- // Mark the current slide as present
|
|
|
- slides[index].classList.add( 'present' );
|
|
|
-
|
|
|
- // If this slide has a state associated with it, add it
|
|
|
- // onto the current state of the deck
|
|
|
- var slideState = slides[index].getAttribute( 'data-state' );
|
|
|
- if( slideState ) {
|
|
|
- state = state.concat( slideState.split( ' ' ) );
|
|
|
- }
|
|
|
-
|
|
|
- // If this slide has a data-autoslide attribtue associated use this as
|
|
|
- // autoSlide value otherwise use the global configured time
|
|
|
- var slideAutoSlide = slides[index].getAttribute( 'data-autoslide' );
|
|
|
- if( slideAutoSlide ) {
|
|
|
- autoSlide = parseInt( slideAutoSlide );
|
|
|
- } else {
|
|
|
- autoSlide = config.autoSlide
|
|
|
- }
|
|
|
-
|
|
|
- }
|
|
|
- else {
|
|
|
- // Since there are no slides we can't be anywhere beyond the
|
|
|
- // zeroth index
|
|
|
- index = 0;
|
|
|
- }
|
|
|
-
|
|
|
- return index;
|
|
|
-
|
|
|
- }
|
|
|
-
|
|
|
- /**
|
|
|
- * Updates the state and link pointers of the controls.
|
|
|
- */
|
|
|
- function updateControls() {
|
|
|
- if ( config.controls && dom.controls ) {
|
|
|
-
|
|
|
- var routes = availableRoutes();
|
|
|
-
|
|
|
- // Remove the 'enabled' class from all directions
|
|
|
- [ dom.controlsLeft, dom.controlsRight, dom.controlsUp, dom.controlsDown ].forEach( function( node ) {
|
|
|
- node.classList.remove( 'enabled' );
|
|
|
- } );
|
|
|
-
|
|
|
- // Add the 'enabled' class to the available routes
|
|
|
- if( routes.left ) dom.controlsLeft.classList.add( 'enabled' );
|
|
|
- if( routes.right ) dom.controlsRight.classList.add( 'enabled' );
|
|
|
- if( routes.up ) dom.controlsUp.classList.add( 'enabled' );
|
|
|
- if( routes.down ) dom.controlsDown.classList.add( 'enabled' );
|
|
|
-
|
|
|
- }
|
|
|
- }
|
|
|
-
|
|
|
- /**
|
|
|
- * Determine what available routes there are for navigation.
|
|
|
- *
|
|
|
- * @return {Object} containing four booleans: left/right/up/down
|
|
|
- */
|
|
|
- function availableRoutes() {
|
|
|
- var horizontalSlides = document.querySelectorAll( HORIZONTAL_SLIDES_SELECTOR ),
|
|
|
- verticalSlides = document.querySelectorAll( VERTICAL_SLIDES_SELECTOR );
|
|
|
-
|
|
|
- return {
|
|
|
- left: indexh > 0,
|
|
|
- right: indexh < horizontalSlides.length - 1,
|
|
|
- up: indexv > 0,
|
|
|
- down: indexv < verticalSlides.length - 1
|
|
|
- };
|
|
|
- }
|
|
|
-
|
|
|
- /**
|
|
|
- * Reads the current URL (hash) and navigates accordingly.
|
|
|
- */
|
|
|
- function readURL() {
|
|
|
- var hash = window.location.hash;
|
|
|
-
|
|
|
- // Attempt to parse the hash as either an index or name
|
|
|
- var bits = hash.slice( 2 ).split( '/' ),
|
|
|
- name = hash.replace( /#|\//gi, '' );
|
|
|
-
|
|
|
- // If the first bit is invalid and there is a name we can
|
|
|
- // assume that this is a named link
|
|
|
- if( isNaN( parseInt( bits[0], 10 ) ) && name.length ) {
|
|
|
- // Find the slide with the specified name
|
|
|
- var element = document.querySelector( '#' + name );
|
|
|
-
|
|
|
- if( element ) {
|
|
|
- // Find the position of the named slide and navigate to it
|
|
|
- var indices = Reveal.getIndices( element );
|
|
|
- slide( indices.h, indices.v );
|
|
|
- }
|
|
|
- // If the slide doesn't exist, navigate to the current slide
|
|
|
- else {
|
|
|
- slide( indexh, indexv );
|
|
|
- }
|
|
|
- }
|
|
|
- else {
|
|
|
- // Read the index components of the hash
|
|
|
- var h = parseInt( bits[0], 10 ) || 0,
|
|
|
- v = parseInt( bits[1], 10 ) || 0;
|
|
|
-
|
|
|
- slide( h, v );
|
|
|
- }
|
|
|
- }
|
|
|
-
|
|
|
- /**
|
|
|
- * Updates the page URL (hash) to reflect the current
|
|
|
- * state.
|
|
|
- */
|
|
|
- function writeURL() {
|
|
|
- if( config.history ) {
|
|
|
- var url = '/';
|
|
|
-
|
|
|
- // Only include the minimum possible number of components in
|
|
|
- // the URL
|
|
|
- if( indexh > 0 || indexv > 0 ) url += indexh;
|
|
|
- if( indexv > 0 ) url += '/' + indexv;
|
|
|
-
|
|
|
- window.location.hash = url;
|
|
|
- }
|
|
|
- }
|
|
|
-
|
|
|
- /**
|
|
|
- * Retrieves the h/v location of the current, or specified,
|
|
|
- * slide.
|
|
|
- *
|
|
|
- * @param {HTMLElement} slide If specified, the returned
|
|
|
- * index will be for this slide rather than the currently
|
|
|
- * active one
|
|
|
- *
|
|
|
- * @return {Object} { h: <int>, v: <int> }
|
|
|
- */
|
|
|
- function getIndices( slide ) {
|
|
|
- // By default, return the current indices
|
|
|
- var h = indexh,
|
|
|
- v = indexv;
|
|
|
-
|
|
|
- // If a slide is specified, return the indices of that slide
|
|
|
- if( slide ) {
|
|
|
- var isVertical = !!slide.parentNode.nodeName.match( /section/gi );
|
|
|
- var slideh = isVertical ? slide.parentNode : slide;
|
|
|
-
|
|
|
- // Select all horizontal slides
|
|
|
- var horizontalSlides = Array.prototype.slice.call( document.querySelectorAll( HORIZONTAL_SLIDES_SELECTOR ) );
|
|
|
-
|
|
|
- // Now that we know which the horizontal slide is, get its index
|
|
|
- h = Math.max( horizontalSlides.indexOf( slideh ), 0 );
|
|
|
-
|
|
|
- // If this is a vertical slide, grab the vertical index
|
|
|
- if( isVertical ) {
|
|
|
- v = Math.max( Array.prototype.slice.call( slide.parentNode.children ).indexOf( slide ), 0 );
|
|
|
- }
|
|
|
- }
|
|
|
-
|
|
|
- return { h: h, v: v };
|
|
|
- }
|
|
|
-
|
|
|
- /**
|
|
|
- * Navigate to the next slide fragment.
|
|
|
- *
|
|
|
- * @return {Boolean} true if there was a next fragment,
|
|
|
- * false otherwise
|
|
|
- */
|
|
|
- function nextFragment() {
|
|
|
- // Vertical slides:
|
|
|
- if( document.querySelector( VERTICAL_SLIDES_SELECTOR + '.present' ) ) {
|
|
|
- var verticalFragments = document.querySelectorAll( VERTICAL_SLIDES_SELECTOR + '.present .fragment:not(.visible)' );
|
|
|
- if( verticalFragments.length ) {
|
|
|
- verticalFragments[0].classList.add( 'visible' );
|
|
|
-
|
|
|
- // Notify subscribers of the change
|
|
|
- dispatchEvent( 'fragmentshown', { fragment: verticalFragments[0] } );
|
|
|
- return true;
|
|
|
- }
|
|
|
- }
|
|
|
- // Horizontal slides:
|
|
|
- else {
|
|
|
- var horizontalFragments = document.querySelectorAll( HORIZONTAL_SLIDES_SELECTOR + '.present .fragment:not(.visible)' );
|
|
|
- if( horizontalFragments.length ) {
|
|
|
- horizontalFragments[0].classList.add( 'visible' );
|
|
|
-
|
|
|
- // Notify subscribers of the change
|
|
|
- dispatchEvent( 'fragmentshown', { fragment: horizontalFragments[0] } );
|
|
|
- return true;
|
|
|
- }
|
|
|
- }
|
|
|
-
|
|
|
- return false;
|
|
|
- }
|
|
|
-
|
|
|
- /**
|
|
|
- * Navigate to the previous slide fragment.
|
|
|
- *
|
|
|
- * @return {Boolean} true if there was a previous fragment,
|
|
|
- * false otherwise
|
|
|
- */
|
|
|
- function previousFragment() {
|
|
|
- // Vertical slides:
|
|
|
- if( document.querySelector( VERTICAL_SLIDES_SELECTOR + '.present' ) ) {
|
|
|
- var verticalFragments = document.querySelectorAll( VERTICAL_SLIDES_SELECTOR + '.present .fragment.visible' );
|
|
|
- if( verticalFragments.length ) {
|
|
|
- verticalFragments[ verticalFragments.length - 1 ].classList.remove( 'visible' );
|
|
|
-
|
|
|
- // Notify subscribers of the change
|
|
|
- dispatchEvent( 'fragmenthidden', { fragment: verticalFragments[ verticalFragments.length - 1 ] } );
|
|
|
- return true;
|
|
|
- }
|
|
|
- }
|
|
|
- // Horizontal slides:
|
|
|
- else {
|
|
|
- var horizontalFragments = document.querySelectorAll( HORIZONTAL_SLIDES_SELECTOR + '.present .fragment.visible' );
|
|
|
- if( horizontalFragments.length ) {
|
|
|
- horizontalFragments[ horizontalFragments.length - 1 ].classList.remove( 'visible' );
|
|
|
-
|
|
|
- // Notify subscribers of the change
|
|
|
- dispatchEvent( 'fragmenthidden', { fragment: horizontalFragments[ horizontalFragments.length - 1 ] } );
|
|
|
- return true;
|
|
|
- }
|
|
|
- }
|
|
|
-
|
|
|
- return false;
|
|
|
- }
|
|
|
-
|
|
|
- /**
|
|
|
- * Cues a new automated slide if enabled in the config.
|
|
|
- */
|
|
|
- function cueAutoSlide() {
|
|
|
- clearTimeout( autoSlideTimeout );
|
|
|
-
|
|
|
- // Cue the next auto-slide if enabled
|
|
|
- if( autoSlide ) {
|
|
|
- autoSlideTimeout = setTimeout( navigateNext, autoSlide );
|
|
|
- }
|
|
|
- }
|
|
|
-
|
|
|
- function navigateLeft() {
|
|
|
- // Prioritize hiding fragments
|
|
|
- if( availableRoutes().left && ( isOverviewActive() || previousFragment() === false ) ) {
|
|
|
- slide( indexh - 1, 0 );
|
|
|
- }
|
|
|
- }
|
|
|
-
|
|
|
- function navigateRight() {
|
|
|
- // Prioritize revealing fragments
|
|
|
- if( availableRoutes().right && ( isOverviewActive() || nextFragment() === false ) ) {
|
|
|
- slide( indexh + 1, 0 );
|
|
|
- }
|
|
|
- }
|
|
|
-
|
|
|
- function navigateUp() {
|
|
|
- // Prioritize hiding fragments
|
|
|
- if( availableRoutes().up && ( isOverviewActive() || previousFragment() === false ) ) {
|
|
|
- slide( indexh, indexv - 1 );
|
|
|
- }
|
|
|
- }
|
|
|
-
|
|
|
- function navigateDown() {
|
|
|
- // Prioritize revealing fragments
|
|
|
- if( availableRoutes().down && ( isOverviewActive() || nextFragment() === false ) ) {
|
|
|
- slide( indexh, indexv + 1 );
|
|
|
- }
|
|
|
- }
|
|
|
-
|
|
|
- /**
|
|
|
- * Navigates backwards, prioritized in the following order:
|
|
|
- * 1) Previous fragment
|
|
|
- * 2) Previous vertical slide
|
|
|
- * 3) Previous horizontal slide
|
|
|
- */
|
|
|
- function navigatePrev() {
|
|
|
- // Prioritize revealing fragments
|
|
|
- if( previousFragment() === false ) {
|
|
|
- if( availableRoutes().up ) {
|
|
|
- navigateUp();
|
|
|
- }
|
|
|
- else {
|
|
|
- // Fetch the previous horizontal slide, if there is one
|
|
|
- var previousSlide = document.querySelector( '.reveal .slides>section.past:nth-child(' + indexh + ')' );
|
|
|
-
|
|
|
- if( previousSlide ) {
|
|
|
- indexv = ( previousSlide.querySelectorAll( 'section' ).length + 1 ) || 0;
|
|
|
- indexh --;
|
|
|
- slide();
|
|
|
- }
|
|
|
- }
|
|
|
- }
|
|
|
- }
|
|
|
-
|
|
|
- /**
|
|
|
- * Same as #navigatePrev() but navigates forwards.
|
|
|
- */
|
|
|
- function navigateNext() {
|
|
|
- // Prioritize revealing fragments
|
|
|
- if( nextFragment() === false ) {
|
|
|
- availableRoutes().down ? navigateDown() : navigateRight();
|
|
|
- }
|
|
|
-
|
|
|
- // If auto-sliding is enabled we need to cue up
|
|
|
- // another timeout
|
|
|
- cueAutoSlide();
|
|
|
- }
|
|
|
-
|
|
|
-
|
|
|
- // --------------------------------------------------------------------//
|
|
|
- // ----------------------------- EVENTS -------------------------------//
|
|
|
- // --------------------------------------------------------------------//
|
|
|
-
|
|
|
-
|
|
|
- /**
|
|
|
- * Handler for the document level 'keydown' event.
|
|
|
- *
|
|
|
- * @param {Object} event
|
|
|
- */
|
|
|
- function onDocumentKeyDown( event ) {
|
|
|
- // 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
|
|
|
- // keyboard modifier key is present
|
|
|
- if ( hasFocus || event.shiftKey || event.altKey || event.ctrlKey || event.metaKey ) return;
|
|
|
-
|
|
|
- var triggered = true;
|
|
|
-
|
|
|
- switch( event.keyCode ) {
|
|
|
- // p, page up
|
|
|
- case 80: case 33: navigatePrev(); break;
|
|
|
- // n, page down
|
|
|
- case 78: case 34: navigateNext(); break;
|
|
|
- // h, left
|
|
|
- case 72: case 37: navigateLeft(); break;
|
|
|
- // l, right
|
|
|
- case 76: case 39: navigateRight(); break;
|
|
|
- // k, up
|
|
|
- case 75: case 38: navigateUp(); break;
|
|
|
- // j, down
|
|
|
- case 74: case 40: navigateDown(); break;
|
|
|
- // home
|
|
|
- case 36: slide( 0 ); break;
|
|
|
- // end
|
|
|
- case 35: slide( Number.MAX_VALUE ); break;
|
|
|
- // space
|
|
|
- case 32: isOverviewActive() ? deactivateOverview() : navigateNext(); break;
|
|
|
- // return
|
|
|
- case 13: isOverviewActive() ? deactivateOverview() : triggered = false; break;
|
|
|
- // b, period
|
|
|
- case 66: case 190: togglePause(); break;
|
|
|
- // f
|
|
|
- case 70: enterFullscreen(); break;
|
|
|
- default:
|
|
|
- triggered = false;
|
|
|
- }
|
|
|
-
|
|
|
- // If the input resulted in a triggered action we should prevent
|
|
|
- // the browsers default behavior
|
|
|
- if( triggered ) {
|
|
|
- event.preventDefault();
|
|
|
- }
|
|
|
- else if ( event.keyCode === 27 && supports3DTransforms ) {
|
|
|
- toggleOverview();
|
|
|
-
|
|
|
- event.preventDefault();
|
|
|
- }
|
|
|
-
|
|
|
- // If auto-sliding is enabled we need to cue up
|
|
|
- // another timeout
|
|
|
- cueAutoSlide();
|
|
|
-
|
|
|
- }
|
|
|
-
|
|
|
- /**
|
|
|
- * Handler for the document level 'touchstart' event,
|
|
|
- * enables support for swipe and pinch gestures.
|
|
|
- */
|
|
|
- function onDocumentTouchStart( event ) {
|
|
|
- touch.startX = event.touches[0].clientX;
|
|
|
- touch.startY = event.touches[0].clientY;
|
|
|
- touch.startCount = event.touches.length;
|
|
|
-
|
|
|
- // If there's two touches we need to memorize the distance
|
|
|
- // between those two points to detect pinching
|
|
|
- if( event.touches.length === 2 && config.overview ) {
|
|
|
- touch.startSpan = distanceBetween( {
|
|
|
- x: event.touches[1].clientX,
|
|
|
- y: event.touches[1].clientY
|
|
|
- }, {
|
|
|
- x: touch.startX,
|
|
|
- y: touch.startY
|
|
|
- } );
|
|
|
- }
|
|
|
- }
|
|
|
-
|
|
|
- /**
|
|
|
- * Handler for the document level 'touchmove' event.
|
|
|
- */
|
|
|
- function onDocumentTouchMove( event ) {
|
|
|
- // Each touch should only trigger one action
|
|
|
- if( !touch.handled ) {
|
|
|
- var currentX = event.touches[0].clientX;
|
|
|
- var currentY = event.touches[0].clientY;
|
|
|
-
|
|
|
- // If the touch started off with two points and still has
|
|
|
- // two active touches; test for the pinch gesture
|
|
|
- if( event.touches.length === 2 && touch.startCount === 2 && config.overview ) {
|
|
|
-
|
|
|
- // The current distance in pixels between the two touch points
|
|
|
- var currentSpan = distanceBetween( {
|
|
|
- x: event.touches[1].clientX,
|
|
|
- y: event.touches[1].clientY
|
|
|
- }, {
|
|
|
- x: touch.startX,
|
|
|
- y: touch.startY
|
|
|
- } );
|
|
|
-
|
|
|
- // If the span is larger than the desire amount we've got
|
|
|
- // ourselves a pinch
|
|
|
- if( Math.abs( touch.startSpan - currentSpan ) > touch.threshold ) {
|
|
|
- touch.handled = true;
|
|
|
-
|
|
|
- if( currentSpan < touch.startSpan ) {
|
|
|
- activateOverview();
|
|
|
- }
|
|
|
- else {
|
|
|
- deactivateOverview();
|
|
|
- }
|
|
|
- }
|
|
|
-
|
|
|
- event.preventDefault();
|
|
|
-
|
|
|
- }
|
|
|
- // There was only one touch point, look for a swipe
|
|
|
- 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.handled = true;
|
|
|
- navigateLeft();
|
|
|
- }
|
|
|
- else if( deltaX < -touch.threshold && Math.abs( deltaX ) > Math.abs( deltaY ) ) {
|
|
|
- touch.handled = true;
|
|
|
- navigateRight();
|
|
|
- }
|
|
|
- else if( deltaY > touch.threshold ) {
|
|
|
- touch.handled = true;
|
|
|
- navigateUp();
|
|
|
- }
|
|
|
- else if( deltaY < -touch.threshold ) {
|
|
|
- touch.handled = true;
|
|
|
- navigateDown();
|
|
|
- }
|
|
|
-
|
|
|
- event.preventDefault();
|
|
|
-
|
|
|
- }
|
|
|
- }
|
|
|
- // There's a bug with swiping on some Android devices unless
|
|
|
- // the default action is always prevented
|
|
|
- else if( navigator.userAgent.match( /android/gi ) ) {
|
|
|
- event.preventDefault();
|
|
|
- }
|
|
|
- }
|
|
|
-
|
|
|
- /**
|
|
|
- * Handler for the document level 'touchend' event.
|
|
|
- */
|
|
|
- function onDocumentTouchEnd( event ) {
|
|
|
- touch.handled = false;
|
|
|
- }
|
|
|
-
|
|
|
- /**
|
|
|
- * Handles mouse wheel scrolling, throttled to avoid skipping
|
|
|
- * multiple slides.
|
|
|
- */
|
|
|
- function onDocumentMouseScroll( event ){
|
|
|
- clearTimeout( mouseWheelTimeout );
|
|
|
-
|
|
|
- mouseWheelTimeout = setTimeout( function() {
|
|
|
- var delta = event.detail || -event.wheelDelta;
|
|
|
- if( delta > 0 ) {
|
|
|
- navigateNext();
|
|
|
- }
|
|
|
- else {
|
|
|
- navigatePrev();
|
|
|
- }
|
|
|
- }, 100 );
|
|
|
- }
|
|
|
-
|
|
|
- /**
|
|
|
- * Clicking on the progress bar results in a navigation to the
|
|
|
- * closest approximate horizontal slide using this equation:
|
|
|
- *
|
|
|
- * ( clickX / presentationWidth ) * numberOfSlides
|
|
|
- */
|
|
|
- function onProgressClick( event ) {
|
|
|
- var slidesTotal = Array.prototype.slice.call( document.querySelectorAll( HORIZONTAL_SLIDES_SELECTOR ) ).length;
|
|
|
- var slideIndex = Math.floor( ( event.clientX / dom.wrapper.offsetWidth ) * slidesTotal );
|
|
|
-
|
|
|
- slide( slideIndex );
|
|
|
- }
|
|
|
-
|
|
|
- /**
|
|
|
- * Handler for the window level 'hashchange' event.
|
|
|
- *
|
|
|
- * @param {Object} event
|
|
|
- */
|
|
|
- function onWindowHashChange( event ) {
|
|
|
- readURL();
|
|
|
- }
|
|
|
-
|
|
|
- /**
|
|
|
- * 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() ) {
|
|
|
- event.preventDefault();
|
|
|
-
|
|
|
- deactivateOverview();
|
|
|
-
|
|
|
- indexh = this.getAttribute( 'data-index-h' );
|
|
|
- indexv = this.getAttribute( 'data-index-v' );
|
|
|
-
|
|
|
- slide();
|
|
|
- }
|
|
|
- }
|
|
|
-
|
|
|
-
|
|
|
- // --------------------------------------------------------------------//
|
|
|
- // ------------------------------- API --------------------------------//
|
|
|
- // --------------------------------------------------------------------//
|
|
|
-
|
|
|
-
|
|
|
- return {
|
|
|
- initialize: initialize,
|
|
|
-
|
|
|
- // Navigation methods
|
|
|
- slide: slide,
|
|
|
- left: navigateLeft,
|
|
|
- right: navigateRight,
|
|
|
- up: navigateUp,
|
|
|
- down: navigateDown,
|
|
|
- prev: navigatePrev,
|
|
|
- next: navigateNext,
|
|
|
- prevFragment: previousFragment,
|
|
|
- nextFragment: nextFragment,
|
|
|
-
|
|
|
- // Deprecated aliases
|
|
|
- navigateTo: slide,
|
|
|
- navigateLeft: navigateLeft,
|
|
|
- navigateRight: navigateRight,
|
|
|
- navigateUp: navigateUp,
|
|
|
- navigateDown: navigateDown,
|
|
|
- navigatePrev: navigatePrev,
|
|
|
- navigateNext: navigateNext,
|
|
|
-
|
|
|
- // Toggles the overview mode on/off
|
|
|
- toggleOverview: toggleOverview,
|
|
|
-
|
|
|
- // 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 previous slide element, may be null
|
|
|
- getPreviousSlide: function() {
|
|
|
- return previousSlide;
|
|
|
- },
|
|
|
-
|
|
|
- // Returns the current slide element
|
|
|
- getCurrentSlide: function() {
|
|
|
- return currentSlide;
|
|
|
- },
|
|
|
-
|
|
|
- // Helper method, retrieves query string as a key/value hash
|
|
|
- getQueryHash: function() {
|
|
|
- var query = {};
|
|
|
-
|
|
|
- location.search.replace( /[A-Z0-9]+?=(\w*)/gi, function(a) {
|
|
|
- query[ a.split( '=' ).shift() ] = a.split( '=' ).pop();
|
|
|
- } );
|
|
|
-
|
|
|
- return query;
|
|
|
- },
|
|
|
-
|
|
|
- // Forward event binding to the reveal DOM element
|
|
|
- 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 );
|
|
|
- }
|
|
|
- }
|
|
|
- };
|
|
|
-
|
|
|
-})();
|