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"jekyll-sitemap" +gem "jekyll-gist" +gem "octopress" \ No newline at end of file diff --git a/Gemfile.lock b/Gemfile.lock new file mode 100755 index 0000000..1683714 --- /dev/null +++ b/Gemfile.lock @@ -0,0 +1,70 @@ +GEM + remote: https://rubygems.org/ + specs: + addressable (2.3.8) + colorator (0.1) + faraday (0.9.2) + multipart-post (>= 1.2, < 3) + ffi (1.9.10) + jekyll (3.1.1) + colorator (~> 0.1) + jekyll-sass-converter (~> 1.0) + jekyll-watch (~> 1.1) + kramdown (~> 1.3) + liquid (~> 3.0) + mercenary (~> 0.3.3) + rouge (~> 1.7) + safe_yaml (~> 1.0) + jekyll-gist (1.4.0) + octokit (~> 4.2) + jekyll-sass-converter (1.4.0) + sass (~> 3.4) + jekyll-sitemap (0.10.0) + jekyll-watch (1.3.1) + listen (~> 3.0) + kramdown (1.9.0) + liquid (3.0.6) + listen (3.0.5) + rb-fsevent (>= 0.9.3) + rb-inotify (>= 0.9) + mercenary (0.3.5) + multipart-post (2.0.0) + octokit (4.2.0) + sawyer (~> 0.6.0, >= 0.5.3) + octopress (3.0.11) + jekyll (>= 2.0) + mercenary (~> 0.3.2) + octopress-deploy + octopress-escape-code (~> 2.0) + octopress-hooks (~> 2.0) + redcarpet (~> 3.0) + titlecase + octopress-deploy (1.3.0) + colorator + octopress-escape-code (2.1.1) + jekyll (~> 3.0) + octopress-hooks (2.6.1) + jekyll (>= 2.0) + rb-fsevent (0.9.7) + rb-inotify (0.9.5) + ffi (>= 0.5.0) + redcarpet (3.3.4) + rouge (1.10.1) + safe_yaml (1.0.4) + sass (3.4.21) + sawyer (0.6.0) + addressable (~> 2.3.5) + faraday (~> 0.8, < 0.10) + titlecase (0.1.1) + +PLATFORMS + ruby + +DEPENDENCIES + jekyll (~> 3.0) + jekyll-gist + jekyll-sitemap + octopress + +BUNDLED WITH + 1.11.2 diff --git a/Gruntfile.js b/Gruntfile.js new file mode 100755 index 0000000..6fbf033 --- /dev/null +++ b/Gruntfile.js @@ -0,0 +1,88 @@ +'use strict'; +module.exports = function(grunt) { + + grunt.initConfig({ + jshint: { + options: { + jshintrc: '.jshintrc' + }, + all: [ + 'Gruntfile.js', + 'assets/js/*.js', + '!assets/js/plugins/*.js', + '!assets/js/scripts.min.js' + ] + }, + uglify: { + dist: { + files: { + 'assets/js/scripts.min.js': [ + 'assets/js/plugins/*.js', + 'assets/js/_*.js' + ] + } + } + }, + imagemin: { + dist: { + options: { + optimizationLevel: 7, + progressive: true + }, + files: [{ + expand: true, + cwd: 'images/', + src: '{,*/}*.{png,jpg,jpeg}', + dest: 'images/' + }] + } + }, + svgmin: { + dist: { + files: [{ + expand: true, + cwd: 'images/', + src: '{,*/}*.svg', + dest: 'images/' + }] + } + }, + watch: { + js: { + files: [ + '<%= jshint.all %>' + ], + tasks: ['jshint','uglify'] + } + }, + clean: { + dist: [ + 'assets/js/scripts.min.js' + ] + } + }); + + // Load tasks + grunt.loadNpmTasks('grunt-contrib-clean'); + grunt.loadNpmTasks('grunt-contrib-jshint'); + grunt.loadNpmTasks('grunt-contrib-uglify'); + grunt.loadNpmTasks('grunt-contrib-watch'); + grunt.loadNpmTasks('grunt-contrib-imagemin'); + grunt.loadNpmTasks('grunt-svgmin'); + + // Register tasks + grunt.registerTask('default', [ + 'clean', + 'uglify', + 'imagemin', + 'svgmin' + ]); + grunt.registerTask('dev', [ + 'watch' + ]); + grunt.registerTask('images', [ + 'imagemin', + 'svgmin' + ]); + +}; \ No newline at end of file diff --git a/_data/navigation.yml b/_data/navigation.yml index b1bf67d..a2885df 100755 --- a/_data/navigation.yml +++ b/_data/navigation.yml @@ -5,8 +5,11 @@ - title: About Me url: /about/ +- title: Presentations + url: /presentations/ + - title: Resume url: /resume/ - -- title: Blog + +- title: Blog Archive url: /archive/ diff --git a/_layouts/home.html b/_layouts/home.html index f7d3608..30763de 100755 --- a/_layouts/home.html +++ b/_layouts/home.html @@ -21,7 +21,7 @@

Recent Posts

- {% for post in site.posts limit:5 %} + {% for post in site.categories.blog limit:5 %}
{% if post.link %}

{{ post.title }}

diff --git a/_layouts/post-index.html b/_layouts/post-index.html index 2b26a25..a08ff06 100755 --- a/_layouts/post-index.html +++ b/_layouts/post-index.html @@ -22,7 +22,7 @@

{{ page.title }}

{% capture written_year %}'None'{% endcapture %} - {% for post in site.posts %} + {% for post in site.categories.blog %} {% capture year %}{{ post.date | date: '%Y' }}{% endcapture %} {% if year != written_year %}

{{ year }}

diff --git a/_layouts/presentation-post-index.html b/_layouts/presentation-post-index.html new file mode 100755 index 0000000..818a52e --- /dev/null +++ b/_layouts/presentation-post-index.html @@ -0,0 +1,52 @@ + + + + + + +{% include _head.html %} + + + + +{% include _browser-upgrade.html %} + +{% include _navigation.html %} + + + +
+
+ {% include _author-bio.html %} +
+
+

{{ page.title }}

+ {% capture written_year %}'None'{% endcapture %} + {% for post in site.categories.presentation %} + {% capture year %}{{ post.date | date: '%Y' }}{% endcapture %} + {% if year != written_year %} +

{{ year }}

+ {% capture written_year %}{{ year }}{% endcapture %} + {% endif %} + + {% endfor %} +
+
+ +
+
+ {% include _footer.html %} +
+
+ +{% include _scripts.html %} + + + diff --git a/_layouts/slide.html b/_layouts/slide.html new file mode 100755 index 0000000..c1462ac --- /dev/null +++ b/_layouts/slide.html @@ -0,0 +1,94 @@ + + + + + + + {% if page.title %} + {{ page.title }} | {{ site.title }} + {% else %} + {{ site.title }} + {% endif %} + + + + + + {% if page.description %} + + {% else %} + + {% endif %} + + + + + + + + {%if page.theme %} + + {% else %} + + {% endif %} + + + + + + + + + + + + + + + + +
+
+ {{ content }} +
+
+ + + + + + + diff --git a/_posts/2016-02-26-markdown-basics.md b/_posts/2016-02-26-markdown-basics.md index 5f00bd3..a58906f 100644 --- a/_posts/2016-02-26-markdown-basics.md +++ b/_posts/2016-02-26-markdown-basics.md @@ -5,6 +5,7 @@ excerpt: "How to get started using your Jekyll site with Github pages. " modified: 2016-01-13 20:41:38 tags: [intro, beginner, jekyll, tutorial] comments: true +category: blog --- diff --git a/_posts/2016-02-27-site-setup-and-configuration-.md b/_posts/2016-02-27-site-setup-and-configuration-.md index 1a3d80b..e0920e6 100644 --- a/_posts/2016-02-27-site-setup-and-configuration-.md +++ b/_posts/2016-02-27-site-setup-and-configuration-.md @@ -2,9 +2,10 @@ layout: post title: (Almost) Everything You Want to Know About Your New Site excerpt: "What goes where, and how to configure your new site " -modified: 22/29/2016, 7:33:12 +modified: 22/29/2016, 7:33:12 tags: [intro, intermediate, jekyll, tutorial] comments: true +category: blog --- ## Step 1: Getting Started diff --git a/_posts/2016-02-28-editing-your-site.md b/_posts/2016-02-28-editing-your-site.md index 935c743..ff399a4 100644 --- a/_posts/2016-02-28-editing-your-site.md +++ b/_posts/2016-02-28-editing-your-site.md @@ -5,6 +5,7 @@ excerpt: "Edit your site and make posts " modified: 2/29/2016, 8:24:22 tags: [intro, beginner, jekyll, tutorial] comments: true +category: blog --- This article will cover the basics on how to edit the features of your site and make new posts. To do this, you will need a text editor. Here are some examples: diff --git a/_posts/2016-02-29-what-is-this.md b/_posts/2016-02-29-what-is-this.md index 88961ce..081c47a 100755 --- a/_posts/2016-02-29-what-is-this.md +++ b/_posts/2016-02-29-what-is-this.md @@ -5,6 +5,7 @@ excerpt: "What is a static website generator, and why should I care?" modified: 2/29/2016, 9:00:24 tags: [intro, beginner, jekyll, tutorial] comments: true +category: blog --- This is a website template created with Jekyll that is designed to be hosted on Github pages. Jekyll is a static website generator, and Github pages provides a free and easy way to host websites created using Jekyll. diff --git a/_posts/2016-07-22-example-presentation.md b/_posts/2016-07-22-example-presentation.md new file mode 100644 index 0000000..09870f4 --- /dev/null +++ b/_posts/2016-07-22-example-presentation.md @@ -0,0 +1,37 @@ +--- +layout: slide +title: Example Reveal.js Presentation Deck +excerpt: A sample file showing the correct markup for creating a Reveal.js slide deck" +theme: simple +transition: convex +tags: [presentation] +category: presentation +--- +
+ +# Reveal.js and Jekyll Academic + + +
+ +
+## HTML or Markdown +Reveal.js works with either. Use whatever you are more comfortable with. + +
+ +
+## Works Anywhere + +By creating presentations using Reveal.js and hosting them on your Jekyll Academic site you will have access to them anywhere. No need to worry about software compatibility, no need to sign in to email accounts on public machines. Simply load your website and select the presentation. + +
+
+## More Information + +Jekyll Academic includes everything that you need in order to make Reveal.js work. Copy this file and edit it to begin making your own slide deck. + +For more information about all of the options available in Reveal.js please the [Reveal.js Demo Website](http://lab.hakim.se/reveal-js/#/) + + +
diff --git a/_site/404.html b/_site/404.html new file mode 100644 index 0000000..5e0253a --- /dev/null +++ b/_site/404.html @@ -0,0 +1,201 @@ + + + + + + + + + +Page Not Found – Site Title + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + +
+
+ + Site Title + +
+
+ +
+
+ + + +
+
+ + +
+ + + Your Name bio photo + + +

Your Name

+

A brief description of yourself.

+ + + + + + + + + + + + + + + + + + + + +
+ +
+
+

Page Not Found

+
+

Sorry, but the page you were trying to view does not exist — perhaps you can try searching for it below.

+ + + + + + + +
+ + + +
+ +
+
+ +
+ +
+ + + + + + + + + + diff --git a/_site/about/index.html b/_site/about/index.html new file mode 100644 index 0000000..809c1e5 --- /dev/null +++ b/_site/about/index.html @@ -0,0 +1,204 @@ + + + + + + + + + +About Me – Site Title + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + +
+
+ + Site Title + +
+
+ +
+
+ + + +
+
+ + +
+ + + Your Name bio photo + + +

Your Name

+

A brief description of yourself.

+ + + + + + + + + + + + + + + + + + + + +
+ +
+
+

About Me

+
+

Lorem ipsum dolor sit amet, consectetur adipiscing elit, sed do eiusmod tempor incididunt ut labore et dolore magna aliqua. Ut enim ad minim veniam, quis nostrud exercitation ullamco laboris nisi ut aliquip ex ea commodo consequat. Duis aute irure dolor in reprehenderit in voluptate velit esse cillum dolore eu fugiat nulla pariatur. Excepteur sint occaecat cupidatat non proident, sunt in culpa qui officia deserunt mollit anim id est laborum.

+ +

Current Interests and Projects:

+ +
    +
  • Lorem ipsum dolor sit amet
    • +
  • Lorem ipsum dolor sit amet
    • +
  • DLorem ipsum dolor sit amet
    • +
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+ + + + + + + + + + + + + diff --git a/_site/accent.scss b/_site/accent.scss new file mode 100644 index 0000000..072d42a --- /dev/null +++ b/_site/accent.scss @@ -0,0 +1,7 @@ +/* ========================================================================== + Sass accent colors + ========================================================================== */ + + +$highlightcolor : #CC0000; +$lowlightcolor : #000; \ No newline at end of file diff --git a/_site/archive/index.html b/_site/archive/index.html new file mode 100644 index 0000000..9ca6180 --- /dev/null +++ b/_site/archive/index.html @@ -0,0 +1,210 @@ + + + + + + + + + +All Blog Posts – Site Title + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + +
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+ + Site Title + +
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+ + + Your Name bio photo + + +

Your Name

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A brief description of yourself.

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+

All Blog Posts

+ + + + +

2016

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+ +

What is This?

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What is a static website generator, and why should I care?

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/dev/null and b/_site/assets/fonts/fontawesome-webfont.ttf differ diff --git a/_site/assets/fonts/fontawesome-webfont.woff b/_site/assets/fonts/fontawesome-webfont.woff new file mode 100755 index 0000000..dc35ce3 Binary files /dev/null and b/_site/assets/fonts/fontawesome-webfont.woff differ diff --git a/_site/assets/fonts/fontawesome-webfont.woff2 b/_site/assets/fonts/fontawesome-webfont.woff2 new file mode 100755 index 0000000..500e517 Binary files /dev/null and b/_site/assets/fonts/fontawesome-webfont.woff2 differ diff --git a/_site/assets/js/plugins/jquery.fitvids.js b/_site/assets/js/plugins/jquery.fitvids.js new file mode 100755 index 0000000..05e24cc --- /dev/null +++ b/_site/assets/js/plugins/jquery.fitvids.js @@ -0,0 +1,83 @@ +/*global jQuery */ +/*jshint browser:true */ +/*! +* FitVids 1.1 +* +* Copyright 2013, Chris Coyier - http://css-tricks.com + Dave Rupert - http://daverupert.com +* Credit to Thierry Koblentz - http://www.alistapart.com/articles/creating-intrinsic-ratios-for-video/ +* Released under the WTFPL license - http://sam.zoy.org/wtfpl/ +* +*/ + +(function( $ ){ + + "use strict"; + + $.fn.fitVids = function( options ) { + var settings = { + customSelector: null, + ignore: null + }; + + if(!document.getElementById('fit-vids-style')) { + // appendStyles: https://github.com/toddmotto/fluidvids/blob/master/dist/fluidvids.js + var head = document.head || document.getElementsByTagName('head')[0]; + var css = '.fluid-width-video-wrapper{width:100%;position:relative;padding:0;}.fluid-width-video-wrapper iframe,.fluid-width-video-wrapper object,.fluid-width-video-wrapper embed {position:absolute;top:0;left:0;width:100%;height:100%;}'; + var div = document.createElement('div'); + div.innerHTML = '

x

'; + head.appendChild(div.childNodes[1]); + } + + if ( options ) { + $.extend( settings, options ); + } + + return this.each(function(){ + var selectors = [ + "iframe[src*='player.vimeo.com']", + "iframe[src*='youtube.com']", + "iframe[src*='youtube-nocookie.com']", + "iframe[src*='kickstarter.com'][src*='video.html']", + "object", + "embed" + ]; + + if (settings.customSelector) { + selectors.push(settings.customSelector); + } + + var ignoreList = '.fitvidsignore'; + + if(settings.ignore) { + ignoreList = ignoreList + ', ' + settings.ignore; + } + + var $allVideos = $(this).find(selectors.join(',')); + $allVideos = $allVideos.not("object object"); // SwfObj conflict patch + $allVideos = $allVideos.not(ignoreList); // Disable FitVids on this video. + + $allVideos.each(function(){ + var $this = $(this); + if($this.parents(ignoreList).length > 0) { + return; // Disable FitVids on this video. + } + if (this.tagName.toLowerCase() === 'embed' && $this.parent('object').length || $this.parent('.fluid-width-video-wrapper').length) { return; } + if ((!$this.css('height') && !$this.css('width')) && (isNaN($this.attr('height')) || isNaN($this.attr('width')))) + { + $this.attr('height', 9); + $this.attr('width', 16); + } + var height = ( this.tagName.toLowerCase() === 'object' || ($this.attr('height') && !isNaN(parseInt($this.attr('height'), 10))) ) ? parseInt($this.attr('height'), 10) : $this.height(), + width = !isNaN(parseInt($this.attr('width'), 10)) ? parseInt($this.attr('width'), 10) : $this.width(), + aspectRatio = height / width; + if(!$this.attr('id')){ + var videoID = 'fitvid' + Math.floor(Math.random()*999999); + $this.attr('id', videoID); + } + $this.wrap('
').parent('.fluid-width-video-wrapper').css('padding-top', (aspectRatio * 100)+"%"); + $this.removeAttr('height').removeAttr('width'); + }); + }); + }; +// Works with either jQuery or Zepto +})( window.jQuery || window.Zepto ); diff --git a/_site/assets/js/plugins/jquery.magnific-popup.js b/_site/assets/js/plugins/jquery.magnific-popup.js new file mode 100755 index 0000000..27fce06 --- /dev/null +++ b/_site/assets/js/plugins/jquery.magnific-popup.js @@ -0,0 +1,2049 @@ +/*! Magnific Popup - v0.9.9 - 2013-12-27 +* http://dimsemenov.com/plugins/magnific-popup/ +* Copyright (c) 2013 Dmitry Semenov; */ +;(function($) { + +/*>>core*/ +/** + * + * Magnific Popup Core JS file + * + */ + + +/** + * Private static constants + */ +var CLOSE_EVENT = 'Close', + BEFORE_CLOSE_EVENT = 'BeforeClose', + AFTER_CLOSE_EVENT = 'AfterClose', + BEFORE_APPEND_EVENT = 'BeforeAppend', + MARKUP_PARSE_EVENT = 'MarkupParse', + OPEN_EVENT = 'Open', + CHANGE_EVENT = 'Change', + NS = 'mfp', + EVENT_NS = '.' + NS, + READY_CLASS = 'mfp-ready', + REMOVING_CLASS = 'mfp-removing', + PREVENT_CLOSE_CLASS = 'mfp-prevent-close'; + + +/** + * Private vars + */ +var mfp, // As we have only one instance of MagnificPopup object, we define it locally to not to use 'this' + MagnificPopup = function(){}, + _isJQ = !!(window.jQuery), + _prevStatus, + _window = $(window), + _body, + _document, + _prevContentType, + _wrapClasses, + _currPopupType; + + +/** + * Private functions + */ +var _mfpOn = function(name, f) { + mfp.ev.on(NS + name + EVENT_NS, f); + }, + _getEl = function(className, appendTo, html, raw) { + var el = document.createElement('div'); + el.className = 'mfp-'+className; + if(html) { + el.innerHTML = html; + } + if(!raw) { + el = $(el); + if(appendTo) { + el.appendTo(appendTo); + } + } else if(appendTo) { + appendTo.appendChild(el); + } + return el; + }, + _mfpTrigger = function(e, data) { + mfp.ev.triggerHandler(NS + e, data); + + if(mfp.st.callbacks) { + // converts "mfpEventName" to "eventName" callback and triggers it if it's present + e = e.charAt(0).toLowerCase() + e.slice(1); + if(mfp.st.callbacks[e]) { + mfp.st.callbacks[e].apply(mfp, $.isArray(data) ? data : [data]); + } + } + }, + _getCloseBtn = function(type) { + if(type !== _currPopupType || !mfp.currTemplate.closeBtn) { + mfp.currTemplate.closeBtn = $( mfp.st.closeMarkup.replace('%title%', mfp.st.tClose ) ); + _currPopupType = type; + } + return mfp.currTemplate.closeBtn; + }, + // Initialize Magnific Popup only when called at least once + _checkInstance = function() { + if(!$.magnificPopup.instance) { + mfp = new MagnificPopup(); + mfp.init(); + $.magnificPopup.instance = mfp; + } + }, + // CSS transition detection, http://stackoverflow.com/questions/7264899/detect-css-transitions-using-javascript-and-without-modernizr + supportsTransitions = function() { + var s = document.createElement('p').style, // 's' for style. better to create an element if body yet to exist + v = ['ms','O','Moz','Webkit']; // 'v' for vendor + + if( s['transition'] !== undefined ) { + return true; + } + + while( v.length ) { + if( v.pop() + 'Transition' in s ) { + return true; + } + } + + return false; + }; + + + +/** + * Public functions + */ +MagnificPopup.prototype = { + + constructor: MagnificPopup, + + /** + * Initializes Magnific Popup plugin. + * This function is triggered only once when $.fn.magnificPopup or $.magnificPopup is executed + */ + init: function() { + var appVersion = navigator.appVersion; + mfp.isIE7 = appVersion.indexOf("MSIE 7.") !== -1; + mfp.isIE8 = appVersion.indexOf("MSIE 8.") !== -1; + mfp.isLowIE = mfp.isIE7 || mfp.isIE8; + mfp.isAndroid = (/android/gi).test(appVersion); + mfp.isIOS = (/iphone|ipad|ipod/gi).test(appVersion); + mfp.supportsTransition = supportsTransitions(); + + // We disable fixed positioned lightbox on devices that don't handle it nicely. + // If you know a better way of detecting this - let me know. + mfp.probablyMobile = (mfp.isAndroid || mfp.isIOS || /(Opera Mini)|Kindle|webOS|BlackBerry|(Opera Mobi)|(Windows Phone)|IEMobile/i.test(navigator.userAgent) ); + _document = $(document); + + mfp.popupsCache = {}; + }, + + /** + * Opens popup + * @param data [description] + */ + open: function(data) { + + if(!_body) { + _body = $(document.body); + } + + var i; + + if(data.isObj === false) { + // convert jQuery collection to array to avoid conflicts later + mfp.items = data.items.toArray(); + + mfp.index = 0; + var items = data.items, + item; + for(i = 0; i < items.length; i++) { + item = items[i]; + if(item.parsed) { + item = item.el[0]; + } + if(item === data.el[0]) { + mfp.index = i; + break; + } + } + } else { + mfp.items = $.isArray(data.items) ? data.items : [data.items]; + mfp.index = data.index || 0; + } + + // if popup is already opened - we just update the content + if(mfp.isOpen) { + mfp.updateItemHTML(); + return; + } + + mfp.types = []; + _wrapClasses = ''; + if(data.mainEl && data.mainEl.length) { + mfp.ev = data.mainEl.eq(0); + } else { + mfp.ev = _document; + } + + if(data.key) { + if(!mfp.popupsCache[data.key]) { + mfp.popupsCache[data.key] = {}; + } + mfp.currTemplate = mfp.popupsCache[data.key]; + } else { + mfp.currTemplate = {}; + } + + + + mfp.st = $.extend(true, {}, $.magnificPopup.defaults, data ); + mfp.fixedContentPos = mfp.st.fixedContentPos === 'auto' ? !mfp.probablyMobile : mfp.st.fixedContentPos; + + if(mfp.st.modal) { + mfp.st.closeOnContentClick = false; + mfp.st.closeOnBgClick = false; + mfp.st.showCloseBtn = false; + mfp.st.enableEscapeKey = false; + } + + + // Building markup + // main containers are created only once + if(!mfp.bgOverlay) { + + // Dark overlay + mfp.bgOverlay = _getEl('bg').on('click'+EVENT_NS, function() { + mfp.close(); + }); + + mfp.wrap = _getEl('wrap').attr('tabindex', -1).on('click'+EVENT_NS, function(e) { + if(mfp._checkIfClose(e.target)) { + mfp.close(); + } + }); + + mfp.container = _getEl('container', mfp.wrap); + } + + mfp.contentContainer = _getEl('content'); + if(mfp.st.preloader) { + mfp.preloader = _getEl('preloader', mfp.container, mfp.st.tLoading); + } + + + // Initializing modules + var modules = $.magnificPopup.modules; + for(i = 0; i < modules.length; i++) { + var n = modules[i]; + n = n.charAt(0).toUpperCase() + n.slice(1); + mfp['init'+n].call(mfp); + } + _mfpTrigger('BeforeOpen'); + + + if(mfp.st.showCloseBtn) { + // Close button + if(!mfp.st.closeBtnInside) { + mfp.wrap.append( _getCloseBtn() ); + } else { + _mfpOn(MARKUP_PARSE_EVENT, function(e, template, values, item) { + values.close_replaceWith = _getCloseBtn(item.type); + }); + _wrapClasses += ' mfp-close-btn-in'; + } + } + + if(mfp.st.alignTop) { + _wrapClasses += ' mfp-align-top'; + } + + + + if(mfp.fixedContentPos) { + mfp.wrap.css({ + overflow: mfp.st.overflowY, + overflowX: 'hidden', + overflowY: mfp.st.overflowY + }); + } else { + mfp.wrap.css({ + top: _window.scrollTop(), + position: 'absolute' + }); + } + if( mfp.st.fixedBgPos === false || (mfp.st.fixedBgPos === 'auto' && !mfp.fixedContentPos) ) { + mfp.bgOverlay.css({ + height: _document.height(), + position: 'absolute' + }); + } + + + + if(mfp.st.enableEscapeKey) { + // Close on ESC key + _document.on('keyup' + EVENT_NS, function(e) { + if(e.keyCode === 27) { + mfp.close(); + } + }); + } + + _window.on('resize' + EVENT_NS, function() { + mfp.updateSize(); + }); + + + if(!mfp.st.closeOnContentClick) { + _wrapClasses += ' mfp-auto-cursor'; + } + + if(_wrapClasses) + mfp.wrap.addClass(_wrapClasses); + + + // this triggers recalculation of layout, so we get it once to not to trigger twice + var windowHeight = mfp.wH = _window.height(); + + + var windowStyles = {}; + + if( mfp.fixedContentPos ) { + if(mfp._hasScrollBar(windowHeight)){ + var s = mfp._getScrollbarSize(); + if(s) { + windowStyles.marginRight = s; + } + } + } + + if(mfp.fixedContentPos) { + if(!mfp.isIE7) { + windowStyles.overflow = 'hidden'; + } else { + // ie7 double-scroll bug + $('body, html').css('overflow', 'hidden'); + } + } + + + + var classesToadd = mfp.st.mainClass; + if(mfp.isIE7) { + classesToadd += ' mfp-ie7'; + } + if(classesToadd) { + mfp._addClassToMFP( classesToadd ); + } + + // add content + mfp.updateItemHTML(); + + _mfpTrigger('BuildControls'); + + // remove scrollbar, add margin e.t.c + $('html').css(windowStyles); + + // add everything to DOM + mfp.bgOverlay.add(mfp.wrap).prependTo( mfp.st.prependTo || _body ); + + // Save last focused element + mfp._lastFocusedEl = document.activeElement; + + // Wait for next cycle to allow CSS transition + setTimeout(function() { + + if(mfp.content) { + mfp._addClassToMFP(READY_CLASS); + mfp._setFocus(); + } else { + // if content is not defined (not loaded e.t.c) we add class only for BG + mfp.bgOverlay.addClass(READY_CLASS); + } + + // Trap the focus in popup + _document.on('focusin' + EVENT_NS, mfp._onFocusIn); + + }, 16); + + mfp.isOpen = true; + mfp.updateSize(windowHeight); + _mfpTrigger(OPEN_EVENT); + + return data; + }, + + /** + * Closes the popup + */ + close: function() { + if(!mfp.isOpen) return; + _mfpTrigger(BEFORE_CLOSE_EVENT); + + mfp.isOpen = false; + // for CSS3 animation + if(mfp.st.removalDelay && !mfp.isLowIE && mfp.supportsTransition ) { + mfp._addClassToMFP(REMOVING_CLASS); + setTimeout(function() { + mfp._close(); + }, mfp.st.removalDelay); + } else { + mfp._close(); + } + }, + + /** + * Helper for close() function + */ + _close: function() { + _mfpTrigger(CLOSE_EVENT); + + var classesToRemove = REMOVING_CLASS + ' ' + READY_CLASS + ' '; + + mfp.bgOverlay.detach(); + mfp.wrap.detach(); + mfp.container.empty(); + + if(mfp.st.mainClass) { + classesToRemove += mfp.st.mainClass + ' '; + } + + mfp._removeClassFromMFP(classesToRemove); + + if(mfp.fixedContentPos) { + var windowStyles = {marginRight: ''}; + if(mfp.isIE7) { + $('body, html').css('overflow', ''); + } else { + windowStyles.overflow = ''; + } + $('html').css(windowStyles); + } + + _document.off('keyup' + EVENT_NS + ' focusin' + EVENT_NS); + mfp.ev.off(EVENT_NS); + + // clean up DOM elements that aren't removed + mfp.wrap.attr('class', 'mfp-wrap').removeAttr('style'); + mfp.bgOverlay.attr('class', 'mfp-bg'); + mfp.container.attr('class', 'mfp-container'); + + // remove close button from target element + if(mfp.st.showCloseBtn && + (!mfp.st.closeBtnInside || mfp.currTemplate[mfp.currItem.type] === true)) { + if(mfp.currTemplate.closeBtn) + mfp.currTemplate.closeBtn.detach(); + } + + + if(mfp._lastFocusedEl) { + $(mfp._lastFocusedEl).focus(); // put tab focus back + } + mfp.currItem = null; + mfp.content = null; + mfp.currTemplate = null; + mfp.prevHeight = 0; + + _mfpTrigger(AFTER_CLOSE_EVENT); + }, + + updateSize: function(winHeight) { + + if(mfp.isIOS) { + // fixes iOS nav bars https://github.com/dimsemenov/Magnific-Popup/issues/2 + var zoomLevel = document.documentElement.clientWidth / window.innerWidth; + var height = window.innerHeight * zoomLevel; + mfp.wrap.css('height', height); + mfp.wH = height; + } else { + mfp.wH = winHeight || _window.height(); + } + // Fixes #84: popup incorrectly positioned with position:relative on body + if(!mfp.fixedContentPos) { + mfp.wrap.css('height', mfp.wH); + } + + _mfpTrigger('Resize'); + + }, + + /** + * Set content of popup based on current index + */ + updateItemHTML: function() { + var item = mfp.items[mfp.index]; + + // Detach and perform modifications + mfp.contentContainer.detach(); + + if(mfp.content) + mfp.content.detach(); + + if(!item.parsed) { + item = mfp.parseEl( mfp.index ); + } + + var type = item.type; + + _mfpTrigger('BeforeChange', [mfp.currItem ? mfp.currItem.type : '', type]); + // BeforeChange event works like so: + // _mfpOn('BeforeChange', function(e, prevType, newType) { }); + + mfp.currItem = item; + + + + + + if(!mfp.currTemplate[type]) { + var markup = mfp.st[type] ? mfp.st[type].markup : false; + + // allows to modify markup + _mfpTrigger('FirstMarkupParse', markup); + + if(markup) { + mfp.currTemplate[type] = $(markup); + } else { + // if there is no markup found we just define that template is parsed + mfp.currTemplate[type] = true; + } + } + + if(_prevContentType && _prevContentType !== item.type) { + mfp.container.removeClass('mfp-'+_prevContentType+'-holder'); + } + + var newContent = mfp['get' + type.charAt(0).toUpperCase() + type.slice(1)](item, mfp.currTemplate[type]); + mfp.appendContent(newContent, type); + + item.preloaded = true; + + _mfpTrigger(CHANGE_EVENT, item); + _prevContentType = item.type; + + // Append container back after its content changed + mfp.container.prepend(mfp.contentContainer); + + _mfpTrigger('AfterChange'); + }, + + + /** + * Set HTML content of popup + */ + appendContent: function(newContent, type) { + mfp.content = newContent; + + if(newContent) { + if(mfp.st.showCloseBtn && mfp.st.closeBtnInside && + mfp.currTemplate[type] === true) { + // if there is no markup, we just append close button element inside + if(!mfp.content.find('.mfp-close').length) { + mfp.content.append(_getCloseBtn()); + } + } else { + mfp.content = newContent; + } + } else { + mfp.content = ''; + } + + _mfpTrigger(BEFORE_APPEND_EVENT); + mfp.container.addClass('mfp-'+type+'-holder'); + + mfp.contentContainer.append(mfp.content); + }, + + + + + /** + * Creates Magnific Popup data object based on given data + * @param {int} index Index of item to parse + */ + parseEl: function(index) { + var item = mfp.items[index], + type; + + if(item.tagName) { + item = { el: $(item) }; + } else { + type = item.type; + item = { data: item, src: item.src }; + } + + if(item.el) { + var types = mfp.types; + + // check for 'mfp-TYPE' class + for(var i = 0; i < types.length; i++) { + if( item.el.hasClass('mfp-'+types[i]) ) { + type = types[i]; + break; + } + } + + item.src = item.el.attr('data-mfp-src'); + if(!item.src) { + item.src = item.el.attr('href'); + } + } + + item.type = type || mfp.st.type || 'inline'; + item.index = index; + item.parsed = true; + mfp.items[index] = item; + _mfpTrigger('ElementParse', item); + + return mfp.items[index]; + }, + + + /** + * Initializes single popup or a group of popups + */ + addGroup: function(el, options) { + var eHandler = function(e) { + e.mfpEl = this; + mfp._openClick(e, el, options); + }; + + if(!options) { + options = {}; + } + + var eName = 'click.magnificPopup'; + options.mainEl = el; + + if(options.items) { + options.isObj = true; + el.off(eName).on(eName, eHandler); + } else { + options.isObj = false; + if(options.delegate) { + el.off(eName).on(eName, options.delegate , eHandler); + } else { + options.items = el; + el.off(eName).on(eName, eHandler); + } + } + }, + _openClick: function(e, el, options) { + var midClick = options.midClick !== undefined ? options.midClick : $.magnificPopup.defaults.midClick; + + + if(!midClick && ( e.which === 2 || e.ctrlKey || e.metaKey ) ) { + return; + } + + var disableOn = options.disableOn !== undefined ? options.disableOn : $.magnificPopup.defaults.disableOn; + + if(disableOn) { + if($.isFunction(disableOn)) { + if( !disableOn.call(mfp) ) { + return true; + } + } else { // else it's number + if( _window.width() < disableOn ) { + return true; + } + } + } + + if(e.type) { + e.preventDefault(); + + // This will prevent popup from closing if element is inside and popup is already opened + if(mfp.isOpen) { + e.stopPropagation(); + } + } + + + options.el = $(e.mfpEl); + if(options.delegate) { + options.items = el.find(options.delegate); + } + mfp.open(options); + }, + + + /** + * Updates text on preloader + */ + updateStatus: function(status, text) { + + if(mfp.preloader) { + if(_prevStatus !== status) { + mfp.container.removeClass('mfp-s-'+_prevStatus); + } + + if(!text && status === 'loading') { + text = mfp.st.tLoading; + } + + var data = { + status: status, + text: text + }; + // allows to modify status + _mfpTrigger('UpdateStatus', data); + + status = data.status; + text = data.text; + + mfp.preloader.html(text); + + mfp.preloader.find('a').on('click', function(e) { + e.stopImmediatePropagation(); + }); + + mfp.container.addClass('mfp-s-'+status); + _prevStatus = status; + } + }, + + + /* + "Private" helpers that aren't private at all + */ + // Check to close popup or not + // "target" is an element that was clicked + _checkIfClose: function(target) { + + if($(target).hasClass(PREVENT_CLOSE_CLASS)) { + return; + } + + var closeOnContent = mfp.st.closeOnContentClick; + var closeOnBg = mfp.st.closeOnBgClick; + + if(closeOnContent && closeOnBg) { + return true; + } else { + + // We close the popup if click is on close button or on preloader. Or if there is no content. + if(!mfp.content || $(target).hasClass('mfp-close') || (mfp.preloader && target === mfp.preloader[0]) ) { + return true; + } + + // if click is outside the content + if( (target !== mfp.content[0] && !$.contains(mfp.content[0], target)) ) { + if(closeOnBg) { + // last check, if the clicked element is in DOM, (in case it's removed onclick) + if( $.contains(document, target) ) { + return true; + } + } + } else if(closeOnContent) { + return true; + } + + } + return false; + }, + _addClassToMFP: function(cName) { + mfp.bgOverlay.addClass(cName); + mfp.wrap.addClass(cName); + }, + _removeClassFromMFP: function(cName) { + this.bgOverlay.removeClass(cName); + mfp.wrap.removeClass(cName); + }, + _hasScrollBar: function(winHeight) { + return ( (mfp.isIE7 ? _document.height() : document.body.scrollHeight) > (winHeight || _window.height()) ); + }, + _setFocus: function() { + (mfp.st.focus ? mfp.content.find(mfp.st.focus).eq(0) : mfp.wrap).focus(); + }, + _onFocusIn: function(e) { + if( e.target !== mfp.wrap[0] && !$.contains(mfp.wrap[0], e.target) ) { + mfp._setFocus(); + return false; + } + }, + _parseMarkup: function(template, values, item) { + var arr; + if(item.data) { + values = $.extend(item.data, values); + } + _mfpTrigger(MARKUP_PARSE_EVENT, [template, values, item] ); + + $.each(values, function(key, value) { + if(value === undefined || value === false) { + return true; + } + arr = key.split('_'); + if(arr.length > 1) { + var el = template.find(EVENT_NS + '-'+arr[0]); + + if(el.length > 0) { + var attr = arr[1]; + if(attr === 'replaceWith') { + if(el[0] !== value[0]) { + el.replaceWith(value); + } + } else if(attr === 'img') { + if(el.is('img')) { + el.attr('src', value); + } else { + el.replaceWith( '' ); + } + } else { + el.attr(arr[1], value); + } + } + + } else { + template.find(EVENT_NS + '-'+key).html(value); + } + }); + }, + + _getScrollbarSize: function() { + // thx David + if(mfp.scrollbarSize === undefined) { + var scrollDiv = document.createElement("div"); + scrollDiv.id = "mfp-sbm"; + scrollDiv.style.cssText = 'width: 99px; height: 99px; overflow: scroll; position: absolute; top: -9999px;'; + document.body.appendChild(scrollDiv); + mfp.scrollbarSize = scrollDiv.offsetWidth - scrollDiv.clientWidth; + document.body.removeChild(scrollDiv); + } + return mfp.scrollbarSize; + } + +}; /* MagnificPopup core prototype end */ + + + + +/** + * Public static functions + */ +$.magnificPopup = { + instance: null, + proto: MagnificPopup.prototype, + modules: [], + + open: function(options, index) { + _checkInstance(); + + if(!options) { + options = {}; + } else { + options = $.extend(true, {}, options); + } + + + options.isObj = true; + options.index = index || 0; + return this.instance.open(options); + }, + + close: function() { + return $.magnificPopup.instance && $.magnificPopup.instance.close(); + }, + + registerModule: function(name, module) { + if(module.options) { + $.magnificPopup.defaults[name] = module.options; + } + $.extend(this.proto, module.proto); + this.modules.push(name); + }, + + defaults: { + + // Info about options is in docs: + // http://dimsemenov.com/plugins/magnific-popup/documentation.html#options + + disableOn: 0, + + key: null, + + midClick: false, + + mainClass: '', + + preloader: true, + + focus: '', // CSS selector of input to focus after popup is opened + + closeOnContentClick: false, + + closeOnBgClick: true, + + closeBtnInside: true, + + showCloseBtn: true, + + enableEscapeKey: true, + + modal: false, + + alignTop: false, + + removalDelay: 0, + + prependTo: null, + + fixedContentPos: 'auto', + + fixedBgPos: 'auto', + + overflowY: 'auto', + + closeMarkup: '', + + tClose: 'Close (Esc)', + + tLoading: 'Loading...' + + } +}; + + + +$.fn.magnificPopup = function(options) { + _checkInstance(); + + var jqEl = $(this); + + // We call some API method of first param is a string + if (typeof options === "string" ) { + + if(options === 'open') { + var items, + itemOpts = _isJQ ? jqEl.data('magnificPopup') : jqEl[0].magnificPopup, + index = parseInt(arguments[1], 10) || 0; + + if(itemOpts.items) { + items = itemOpts.items[index]; + } else { + items = jqEl; + if(itemOpts.delegate) { + items = items.find(itemOpts.delegate); + } + items = items.eq( index ); + } + mfp._openClick({mfpEl:items}, jqEl, itemOpts); + } else { + if(mfp.isOpen) + mfp[options].apply(mfp, Array.prototype.slice.call(arguments, 1)); + } + + } else { + // clone options obj + options = $.extend(true, {}, options); + + /* + * As Zepto doesn't support .data() method for objects + * and it works only in normal browsers + * we assign "options" object directly to the DOM element. FTW! + */ + if(_isJQ) { + jqEl.data('magnificPopup', options); + } else { + jqEl[0].magnificPopup = options; + } + + mfp.addGroup(jqEl, options); + + } + return jqEl; +}; + + +//Quick benchmark +/* +var start = performance.now(), + i, + rounds = 1000; + +for(i = 0; i < rounds; i++) { + +} +console.log('Test #1:', performance.now() - start); + +start = performance.now(); +for(i = 0; i < rounds; i++) { + +} +console.log('Test #2:', performance.now() - start); +*/ + + +/*>>core*/ + +/*>>inline*/ + +var INLINE_NS = 'inline', + _hiddenClass, + _inlinePlaceholder, + _lastInlineElement, + _putInlineElementsBack = function() { + if(_lastInlineElement) { + _inlinePlaceholder.after( _lastInlineElement.addClass(_hiddenClass) ).detach(); + _lastInlineElement = null; + } + }; + +$.magnificPopup.registerModule(INLINE_NS, { + options: { + hiddenClass: 'hide', // will be appended with `mfp-` prefix + markup: '', + tNotFound: 'Content not found' + }, + proto: { + + initInline: function() { + mfp.types.push(INLINE_NS); + + _mfpOn(CLOSE_EVENT+'.'+INLINE_NS, function() { + _putInlineElementsBack(); + }); + }, + + getInline: function(item, template) { + + _putInlineElementsBack(); + + if(item.src) { + var inlineSt = mfp.st.inline, + el = $(item.src); + + if(el.length) { + + // If target element has parent - we replace it with placeholder and put it back after popup is closed + var parent = el[0].parentNode; + if(parent && parent.tagName) { + if(!_inlinePlaceholder) { + _hiddenClass = inlineSt.hiddenClass; + _inlinePlaceholder = _getEl(_hiddenClass); + _hiddenClass = 'mfp-'+_hiddenClass; + } + // replace target inline element with placeholder + _lastInlineElement = el.after(_inlinePlaceholder).detach().removeClass(_hiddenClass); + } + + mfp.updateStatus('ready'); + } else { + mfp.updateStatus('error', inlineSt.tNotFound); + el = $('
'); + } + + item.inlineElement = el; + return el; + } + + mfp.updateStatus('ready'); + mfp._parseMarkup(template, {}, item); + return template; + } + } +}); + +/*>>inline*/ + +/*>>ajax*/ +var AJAX_NS = 'ajax', + _ajaxCur, + _removeAjaxCursor = function() { + if(_ajaxCur) { + _body.removeClass(_ajaxCur); + } + }, + _destroyAjaxRequest = function() { + _removeAjaxCursor(); + if(mfp.req) { + mfp.req.abort(); + } + }; + +$.magnificPopup.registerModule(AJAX_NS, { + + options: { + settings: null, + cursor: 'mfp-ajax-cur', + tError: 'The content could not be loaded.' + }, + + proto: { + initAjax: function() { + mfp.types.push(AJAX_NS); + _ajaxCur = mfp.st.ajax.cursor; + + _mfpOn(CLOSE_EVENT+'.'+AJAX_NS, _destroyAjaxRequest); + _mfpOn('BeforeChange.' + AJAX_NS, _destroyAjaxRequest); + }, + getAjax: function(item) { + + if(_ajaxCur) + _body.addClass(_ajaxCur); + + mfp.updateStatus('loading'); + + var opts = $.extend({ + url: item.src, + success: function(data, textStatus, jqXHR) { + var temp = { + data:data, + xhr:jqXHR + }; + + _mfpTrigger('ParseAjax', temp); + + mfp.appendContent( $(temp.data), AJAX_NS ); + + item.finished = true; + + _removeAjaxCursor(); + + mfp._setFocus(); + + setTimeout(function() { + mfp.wrap.addClass(READY_CLASS); + }, 16); + + mfp.updateStatus('ready'); + + _mfpTrigger('AjaxContentAdded'); + }, + error: function() { + _removeAjaxCursor(); + item.finished = item.loadError = true; + mfp.updateStatus('error', mfp.st.ajax.tError.replace('%url%', item.src)); + } + }, mfp.st.ajax.settings); + + mfp.req = $.ajax(opts); + + return ''; + } + } +}); + + + + + + + +/*>>ajax*/ + +/*>>image*/ +var _imgInterval, + _getTitle = function(item) { + if(item.data && item.data.title !== undefined) + return item.data.title; + + var src = mfp.st.image.titleSrc; + + if(src) { + if($.isFunction(src)) { + return src.call(mfp, item); + } else if(item.el) { + return item.el.attr(src) || ''; + } + } + return ''; + }; + +$.magnificPopup.registerModule('image', { + + options: { + markup: '
'+ + '
'+ + '
'+ + '
'+ + '
'+ + '
'+ + '
'+ + '
'+ + '
'+ + '
'+ + '
'+ + '
', + cursor: 'mfp-zoom-out-cur', + titleSrc: 'title', + verticalFit: true, + tError: 'The image could not be loaded.' + }, + + proto: { + initImage: function() { + var imgSt = mfp.st.image, + ns = '.image'; + + mfp.types.push('image'); + + _mfpOn(OPEN_EVENT+ns, function() { + if(mfp.currItem.type === 'image' && imgSt.cursor) { + _body.addClass(imgSt.cursor); + } + }); + + _mfpOn(CLOSE_EVENT+ns, function() { + if(imgSt.cursor) { + _body.removeClass(imgSt.cursor); + } + _window.off('resize' + EVENT_NS); + }); + + _mfpOn('Resize'+ns, mfp.resizeImage); + if(mfp.isLowIE) { + _mfpOn('AfterChange', mfp.resizeImage); + } + }, + resizeImage: function() { + var item = mfp.currItem; + if(!item || !item.img) return; + + if(mfp.st.image.verticalFit) { + var decr = 0; + // fix box-sizing in ie7/8 + if(mfp.isLowIE) { + decr = parseInt(item.img.css('padding-top'), 10) + parseInt(item.img.css('padding-bottom'),10); + } + item.img.css('max-height', mfp.wH-decr); + } + }, + _onImageHasSize: function(item) { + if(item.img) { + + item.hasSize = true; + + if(_imgInterval) { + clearInterval(_imgInterval); + } + + item.isCheckingImgSize = false; + + _mfpTrigger('ImageHasSize', item); + + if(item.imgHidden) { + if(mfp.content) + mfp.content.removeClass('mfp-loading'); + + item.imgHidden = false; + } + + } + }, + + /** + * Function that loops until the image has size to display elements that rely on it asap + */ + findImageSize: function(item) { + + var counter = 0, + img = item.img[0], + mfpSetInterval = function(delay) { + + if(_imgInterval) { + clearInterval(_imgInterval); + } + // decelerating interval that checks for size of an image + _imgInterval = setInterval(function() { + if(img.naturalWidth > 0) { + mfp._onImageHasSize(item); + return; + } + + if(counter > 200) { + clearInterval(_imgInterval); + } + + counter++; + if(counter === 3) { + mfpSetInterval(10); + } else if(counter === 40) { + mfpSetInterval(50); + } else if(counter === 100) { + mfpSetInterval(500); + } + }, delay); + }; + + mfpSetInterval(1); + }, + + getImage: function(item, template) { + + var guard = 0, + + // image load complete handler + onLoadComplete = function() { + if(item) { + if (item.img[0].complete) { + item.img.off('.mfploader'); + + if(item === mfp.currItem){ + mfp._onImageHasSize(item); + + mfp.updateStatus('ready'); + } + + item.hasSize = true; + item.loaded = true; + + _mfpTrigger('ImageLoadComplete'); + + } + else { + // if image complete check fails 200 times (20 sec), we assume that there was an error. + guard++; + if(guard < 200) { + setTimeout(onLoadComplete,100); + } else { + onLoadError(); + } + } + } + }, + + // image error handler + onLoadError = function() { + if(item) { + item.img.off('.mfploader'); + if(item === mfp.currItem){ + mfp._onImageHasSize(item); + mfp.updateStatus('error', imgSt.tError.replace('%url%', item.src) ); + } + + item.hasSize = true; + item.loaded = true; + item.loadError = true; + } + }, + imgSt = mfp.st.image; + + + var el = template.find('.mfp-img'); + if(el.length) { + var img = document.createElement('img'); + img.className = 'mfp-img'; + item.img = $(img).on('load.mfploader', onLoadComplete).on('error.mfploader', onLoadError); + img.src = item.src; + + // without clone() "error" event is not firing when IMG is replaced by new IMG + // TODO: find a way to avoid such cloning + if(el.is('img')) { + item.img = item.img.clone(); + } + + img = item.img[0]; + if(img.naturalWidth > 0) { + item.hasSize = true; + } else if(!img.width) { + item.hasSize = false; + } + } + + mfp._parseMarkup(template, { + title: _getTitle(item), + img_replaceWith: item.img + }, item); + + mfp.resizeImage(); + + if(item.hasSize) { + if(_imgInterval) clearInterval(_imgInterval); + + if(item.loadError) { + template.addClass('mfp-loading'); + mfp.updateStatus('error', imgSt.tError.replace('%url%', item.src) ); + } else { + template.removeClass('mfp-loading'); + mfp.updateStatus('ready'); + } + return template; + } + + mfp.updateStatus('loading'); + item.loading = true; + + if(!item.hasSize) { + item.imgHidden = true; + template.addClass('mfp-loading'); + mfp.findImageSize(item); + } + + return template; + } + } +}); + + + +/*>>image*/ + +/*>>zoom*/ +var hasMozTransform, + getHasMozTransform = function() { + if(hasMozTransform === undefined) { + hasMozTransform = document.createElement('p').style.MozTransform !== undefined; + } + return hasMozTransform; + }; + +$.magnificPopup.registerModule('zoom', { + + options: { + enabled: false, + easing: 'ease-in-out', + duration: 300, + opener: function(element) { + return element.is('img') ? element : element.find('img'); + } + }, + + proto: { + + initZoom: function() { + var zoomSt = mfp.st.zoom, + ns = '.zoom', + image; + + if(!zoomSt.enabled || !mfp.supportsTransition) { + return; + } + + var duration = zoomSt.duration, + getElToAnimate = function(image) { + var newImg = image.clone().removeAttr('style').removeAttr('class').addClass('mfp-animated-image'), + transition = 'all '+(zoomSt.duration/1000)+'s ' + zoomSt.easing, + cssObj = { + position: 'fixed', + zIndex: 9999, + left: 0, + top: 0, + '-webkit-backface-visibility': 'hidden' + }, + t = 'transition'; + + cssObj['-webkit-'+t] = cssObj['-moz-'+t] = cssObj['-o-'+t] = cssObj[t] = transition; + + newImg.css(cssObj); + return newImg; + }, + showMainContent = function() { + mfp.content.css('visibility', 'visible'); + }, + openTimeout, + animatedImg; + + _mfpOn('BuildControls'+ns, function() { + if(mfp._allowZoom()) { + + clearTimeout(openTimeout); + mfp.content.css('visibility', 'hidden'); + + // Basically, all code below does is clones existing image, puts in on top of the current one and animated it + + image = mfp._getItemToZoom(); + + if(!image) { + showMainContent(); + return; + } + + animatedImg = getElToAnimate(image); + + animatedImg.css( mfp._getOffset() ); + + mfp.wrap.append(animatedImg); + + openTimeout = setTimeout(function() { + animatedImg.css( mfp._getOffset( true ) ); + openTimeout = setTimeout(function() { + + showMainContent(); + + setTimeout(function() { + animatedImg.remove(); + image = animatedImg = null; + _mfpTrigger('ZoomAnimationEnded'); + }, 16); // avoid blink when switching images + + }, duration); // this timeout equals animation duration + + }, 16); // by adding this timeout we avoid short glitch at the beginning of animation + + + // Lots of timeouts... + } + }); + _mfpOn(BEFORE_CLOSE_EVENT+ns, function() { + if(mfp._allowZoom()) { + + clearTimeout(openTimeout); + + mfp.st.removalDelay = duration; + + if(!image) { + image = mfp._getItemToZoom(); + if(!image) { + return; + } + animatedImg = getElToAnimate(image); + } + + + animatedImg.css( mfp._getOffset(true) ); + mfp.wrap.append(animatedImg); + mfp.content.css('visibility', 'hidden'); + + setTimeout(function() { + animatedImg.css( mfp._getOffset() ); + }, 16); + } + + }); + + _mfpOn(CLOSE_EVENT+ns, function() { + if(mfp._allowZoom()) { + showMainContent(); + if(animatedImg) { + animatedImg.remove(); + } + image = null; + } + }); + }, + + _allowZoom: function() { + return mfp.currItem.type === 'image'; + }, + + _getItemToZoom: function() { + if(mfp.currItem.hasSize) { + return mfp.currItem.img; + } else { + return false; + } + }, + + // Get element postion relative to viewport + _getOffset: function(isLarge) { + var el; + if(isLarge) { + el = mfp.currItem.img; + } else { + el = mfp.st.zoom.opener(mfp.currItem.el || mfp.currItem); + } + + var offset = el.offset(); + var paddingTop = parseInt(el.css('padding-top'),10); + var paddingBottom = parseInt(el.css('padding-bottom'),10); + offset.top -= ( $(window).scrollTop() - paddingTop ); + + + /* + + Animating left + top + width/height looks glitchy in Firefox, but perfect in Chrome. And vice-versa. + + */ + var obj = { + width: el.width(), + // fix Zepto height+padding issue + height: (_isJQ ? el.innerHeight() : el[0].offsetHeight) - paddingBottom - paddingTop + }; + + // I hate to do this, but there is no another option + if( getHasMozTransform() ) { + obj['-moz-transform'] = obj['transform'] = 'translate(' + offset.left + 'px,' + offset.top + 'px)'; + } else { + obj.left = offset.left; + obj.top = offset.top; + } + return obj; + } + + } +}); + + + +/*>>zoom*/ + +/*>>iframe*/ + +var IFRAME_NS = 'iframe', + _emptyPage = '//about:blank', + + _fixIframeBugs = function(isShowing) { + if(mfp.currTemplate[IFRAME_NS]) { + var el = mfp.currTemplate[IFRAME_NS].find('iframe'); + if(el.length) { + // reset src after the popup is closed to avoid "video keeps playing after popup is closed" bug + if(!isShowing) { + el[0].src = _emptyPage; + } + + // IE8 black screen bug fix + if(mfp.isIE8) { + el.css('display', isShowing ? 'block' : 'none'); + } + } + } + }; + +$.magnificPopup.registerModule(IFRAME_NS, { + + options: { + markup: '
'+ + '
'+ + ''+ + '
', + + srcAction: 'iframe_src', + + // we don't care and support only one default type of URL by default + patterns: { + youtube: { + index: 'youtube.com', + id: 'v=', + src: '//www.youtube.com/embed/%id%?autoplay=1' + }, + vimeo: { + index: 'vimeo.com/', + id: '/', + src: '//player.vimeo.com/video/%id%?autoplay=1' + }, + gmaps: { + index: '//maps.google.', + src: '%id%&output=embed' + } + } + }, + + proto: { + initIframe: function() { + mfp.types.push(IFRAME_NS); + + _mfpOn('BeforeChange', function(e, prevType, newType) { + if(prevType !== newType) { + if(prevType === IFRAME_NS) { + _fixIframeBugs(); // iframe if removed + } else if(newType === IFRAME_NS) { + _fixIframeBugs(true); // iframe is showing + } + }// else { + // iframe source is switched, don't do anything + //} + }); + + _mfpOn(CLOSE_EVENT + '.' + IFRAME_NS, function() { + _fixIframeBugs(); + }); + }, + + getIframe: function(item, template) { + var embedSrc = item.src; + var iframeSt = mfp.st.iframe; + + $.each(iframeSt.patterns, function() { + if(embedSrc.indexOf( this.index ) > -1) { + if(this.id) { + if(typeof this.id === 'string') { + embedSrc = embedSrc.substr(embedSrc.lastIndexOf(this.id)+this.id.length, embedSrc.length); + } else { + embedSrc = this.id.call( this, embedSrc ); + } + } + embedSrc = this.src.replace('%id%', embedSrc ); + return false; // break; + } + }); + + var dataObj = {}; + if(iframeSt.srcAction) { + dataObj[iframeSt.srcAction] = embedSrc; + } + mfp._parseMarkup(template, dataObj, item); + + mfp.updateStatus('ready'); + + return template; + } + } +}); + + + +/*>>iframe*/ + +/*>>gallery*/ +/** + * Get looped index depending on number of slides + */ +var _getLoopedId = function(index) { + var numSlides = mfp.items.length; + if(index > numSlides - 1) { + return index - numSlides; + } else if(index < 0) { + return numSlides + index; + } + return index; + }, + _replaceCurrTotal = function(text, curr, total) { + return text.replace(/%curr%/gi, curr + 1).replace(/%total%/gi, total); + }; + +$.magnificPopup.registerModule('gallery', { + + options: { + enabled: false, + arrowMarkup: '', + preload: [0,2], + navigateByImgClick: true, + arrows: true, + + tPrev: 'Previous (Left arrow key)', + tNext: 'Next (Right arrow key)', + tCounter: '%curr% of %total%' + }, + + proto: { + initGallery: function() { + + var gSt = mfp.st.gallery, + ns = '.mfp-gallery', + supportsFastClick = Boolean($.fn.mfpFastClick); + + mfp.direction = true; // true - next, false - prev + + if(!gSt || !gSt.enabled ) return false; + + _wrapClasses += ' mfp-gallery'; + + _mfpOn(OPEN_EVENT+ns, function() { + + if(gSt.navigateByImgClick) { + mfp.wrap.on('click'+ns, '.mfp-img', function() { + if(mfp.items.length > 1) { + mfp.next(); + return false; + } + }); + } + + _document.on('keydown'+ns, function(e) { + if (e.keyCode === 37) { + mfp.prev(); + } else if (e.keyCode === 39) { + mfp.next(); + } + }); + }); + + _mfpOn('UpdateStatus'+ns, function(e, data) { + if(data.text) { + data.text = _replaceCurrTotal(data.text, mfp.currItem.index, mfp.items.length); + } + }); + + _mfpOn(MARKUP_PARSE_EVENT+ns, function(e, element, values, item) { + var l = mfp.items.length; + values.counter = l > 1 ? _replaceCurrTotal(gSt.tCounter, item.index, l) : ''; + }); + + _mfpOn('BuildControls' + ns, function() { + if(mfp.items.length > 1 && gSt.arrows && !mfp.arrowLeft) { + var markup = gSt.arrowMarkup, + arrowLeft = mfp.arrowLeft = $( markup.replace(/%title%/gi, gSt.tPrev).replace(/%dir%/gi, 'left') ).addClass(PREVENT_CLOSE_CLASS), + arrowRight = mfp.arrowRight = $( markup.replace(/%title%/gi, gSt.tNext).replace(/%dir%/gi, 'right') ).addClass(PREVENT_CLOSE_CLASS); + + var eName = supportsFastClick ? 'mfpFastClick' : 'click'; + arrowLeft[eName](function() { + mfp.prev(); + }); + arrowRight[eName](function() { + mfp.next(); + }); + + // Polyfill for :before and :after (adds elements with classes mfp-a and mfp-b) + if(mfp.isIE7) { + _getEl('b', arrowLeft[0], false, true); + _getEl('a', arrowLeft[0], false, true); + _getEl('b', arrowRight[0], false, true); + _getEl('a', arrowRight[0], false, true); + } + + mfp.container.append(arrowLeft.add(arrowRight)); + } + }); + + _mfpOn(CHANGE_EVENT+ns, function() { + if(mfp._preloadTimeout) clearTimeout(mfp._preloadTimeout); + + mfp._preloadTimeout = setTimeout(function() { + mfp.preloadNearbyImages(); + mfp._preloadTimeout = null; + }, 16); + }); + + + _mfpOn(CLOSE_EVENT+ns, function() { + _document.off(ns); + mfp.wrap.off('click'+ns); + + if(mfp.arrowLeft && supportsFastClick) { + mfp.arrowLeft.add(mfp.arrowRight).destroyMfpFastClick(); + } + mfp.arrowRight = mfp.arrowLeft = null; + }); + + }, + next: function() { + mfp.direction = true; + mfp.index = _getLoopedId(mfp.index + 1); + mfp.updateItemHTML(); + }, + prev: function() { + mfp.direction = false; + mfp.index = _getLoopedId(mfp.index - 1); + mfp.updateItemHTML(); + }, + goTo: function(newIndex) { + mfp.direction = (newIndex >= mfp.index); + mfp.index = newIndex; + mfp.updateItemHTML(); + }, + preloadNearbyImages: function() { + var p = mfp.st.gallery.preload, + preloadBefore = Math.min(p[0], mfp.items.length), + preloadAfter = Math.min(p[1], mfp.items.length), + i; + + for(i = 1; i <= (mfp.direction ? preloadAfter : preloadBefore); i++) { + mfp._preloadItem(mfp.index+i); + } + for(i = 1; i <= (mfp.direction ? preloadBefore : preloadAfter); i++) { + mfp._preloadItem(mfp.index-i); + } + }, + _preloadItem: function(index) { + index = _getLoopedId(index); + + if(mfp.items[index].preloaded) { + return; + } + + var item = mfp.items[index]; + if(!item.parsed) { + item = mfp.parseEl( index ); + } + + _mfpTrigger('LazyLoad', item); + + if(item.type === 'image') { + item.img = $('').on('load.mfploader', function() { + item.hasSize = true; + }).on('error.mfploader', function() { + item.hasSize = true; + item.loadError = true; + _mfpTrigger('LazyLoadError', item); + }).attr('src', item.src); + } + + + item.preloaded = true; + } + } +}); + +/* +Touch Support that might be implemented some day + +addSwipeGesture: function() { + var startX, + moved, + multipleTouches; + + return; + + var namespace = '.mfp', + addEventNames = function(pref, down, move, up, cancel) { + mfp._tStart = pref + down + namespace; + mfp._tMove = pref + move + namespace; + mfp._tEnd = pref + up + namespace; + mfp._tCancel = pref + cancel + namespace; + }; + + if(window.navigator.msPointerEnabled) { + addEventNames('MSPointer', 'Down', 'Move', 'Up', 'Cancel'); + } else if('ontouchstart' in window) { + addEventNames('touch', 'start', 'move', 'end', 'cancel'); + } else { + return; + } + _window.on(mfp._tStart, function(e) { + var oE = e.originalEvent; + multipleTouches = moved = false; + startX = oE.pageX || oE.changedTouches[0].pageX; + }).on(mfp._tMove, function(e) { + if(e.originalEvent.touches.length > 1) { + multipleTouches = e.originalEvent.touches.length; + } else { + //e.preventDefault(); + moved = true; + } + }).on(mfp._tEnd + ' ' + mfp._tCancel, function(e) { + if(moved && !multipleTouches) { + var oE = e.originalEvent, + diff = startX - (oE.pageX || oE.changedTouches[0].pageX); + + if(diff > 20) { + mfp.next(); + } else if(diff < -20) { + mfp.prev(); + } + } + }); +}, +*/ + + +/*>>gallery*/ + +/*>>retina*/ + +var RETINA_NS = 'retina'; + +$.magnificPopup.registerModule(RETINA_NS, { + options: { + replaceSrc: function(item) { + return item.src.replace(/\.\w+$/, function(m) { return '@2x' + m; }); + }, + ratio: 1 // Function or number. Set to 1 to disable. + }, + proto: { + initRetina: function() { + if(window.devicePixelRatio > 1) { + + var st = mfp.st.retina, + ratio = st.ratio; + + ratio = !isNaN(ratio) ? ratio : ratio(); + + if(ratio > 1) { + _mfpOn('ImageHasSize' + '.' + RETINA_NS, function(e, item) { + item.img.css({ + 'max-width': item.img[0].naturalWidth / ratio, + 'width': '100%' + }); + }); + _mfpOn('ElementParse' + '.' + RETINA_NS, function(e, item) { + item.src = st.replaceSrc(item, ratio); + }); + } + } + + } + } +}); + +/*>>retina*/ + +/*>>fastclick*/ +/** + * FastClick event implementation. (removes 300ms delay on touch devices) + * Based on https://developers.google.com/mobile/articles/fast_buttons + * + * You may use it outside the Magnific Popup by calling just: + * + * $('.your-el').mfpFastClick(function() { + * console.log('Clicked!'); + * }); + * + * To unbind: + * $('.your-el').destroyMfpFastClick(); + * + * + * Note that it's a very basic and simple implementation, it blocks ghost click on the same element where it was bound. + * If you need something more advanced, use plugin by FT Labs https://github.com/ftlabs/fastclick + * + */ + +(function() { + var ghostClickDelay = 1000, + supportsTouch = 'ontouchstart' in window, + unbindTouchMove = function() { + _window.off('touchmove'+ns+' touchend'+ns); + }, + eName = 'mfpFastClick', + ns = '.'+eName; + + + // As Zepto.js doesn't have an easy way to add custom events (like jQuery), so we implement it in this way + $.fn.mfpFastClick = function(callback) { + + return $(this).each(function() { + + var elem = $(this), + lock; + + if( supportsTouch ) { + + var timeout, + startX, + startY, + pointerMoved, + point, + numPointers; + + elem.on('touchstart' + ns, function(e) { + pointerMoved = false; + numPointers = 1; + + point = e.originalEvent ? e.originalEvent.touches[0] : e.touches[0]; + startX = point.clientX; + startY = point.clientY; + + _window.on('touchmove'+ns, function(e) { + point = e.originalEvent ? e.originalEvent.touches : e.touches; + numPointers = point.length; + point = point[0]; + if (Math.abs(point.clientX - startX) > 10 || + Math.abs(point.clientY - startY) > 10) { + pointerMoved = true; + unbindTouchMove(); + } + }).on('touchend'+ns, function(e) { + unbindTouchMove(); + if(pointerMoved || numPointers > 1) { + return; + } + lock = true; + e.preventDefault(); + clearTimeout(timeout); + timeout = setTimeout(function() { + lock = false; + }, ghostClickDelay); + callback(); + }); + }); + + } + + elem.on('click' + ns, function() { + if(!lock) { + callback(); + } + }); + }); + }; + + $.fn.destroyMfpFastClick = function() { + $(this).off('touchstart' + ns + ' click' + ns); + if(supportsTouch) _window.off('touchmove'+ns+' touchend'+ns); + }; +})(); + +/*>>fastclick*/ + _checkInstance(); })(window.jQuery || window.Zepto); diff --git a/_site/assets/js/scripts.min.js b/_site/assets/js/scripts.min.js new file mode 100755 index 0000000..ba4c4ea --- /dev/null +++ b/_site/assets/js/scripts.min.js @@ -0,0 +1 @@ +!function(a){"use strict";a.fn.fitVids=function(b){var c={customSelector:null,ignore:null};if(!document.getElementById("fit-vids-style")){var d=document.head||document.getElementsByTagName("head")[0],e=".fluid-width-video-wrapper{width:100%;position:relative;padding:0;}.fluid-width-video-wrapper iframe,.fluid-width-video-wrapper object,.fluid-width-video-wrapper embed {position:absolute;top:0;left:0;width:100%;height:100%;}",f=document.createElement("div");f.innerHTML='

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r?Math.max(0,r[1]-(n||0))+(r[2]||"px"):t}function an(e,t,n,r,i){var o=n===(r?"border":"content")?4:"width"===t?1:0,a=0;for(;4>o;o+=2)"margin"===n&&(a+=b.css(e,n+Zt[o],!0,i)),r?("content"===n&&(a-=b.css(e,"padding"+Zt[o],!0,i)),"margin"!==n&&(a-=b.css(e,"border"+Zt[o]+"Width",!0,i))):(a+=b.css(e,"padding"+Zt[o],!0,i),"padding"!==n&&(a+=b.css(e,"border"+Zt[o]+"Width",!0,i)));return a}function sn(e,t,n){var r=!0,i="width"===t?e.offsetWidth:e.offsetHeight,o=Rt(e),a=b.support.boxSizing&&"border-box"===b.css(e,"boxSizing",!1,o);if(0>=i||null==i){if(i=Wt(e,t,o),(0>i||null==i)&&(i=e.style[t]),Yt.test(i))return i;r=a&&(b.support.boxSizingReliable||i===e.style[t]),i=parseFloat(i)||0}return i+an(e,t,n||(a?"border":"content"),r,o)+"px"}function un(e){var t=o,n=Gt[e];return n||(n=ln(e,t),"none"!==n&&n||(Pt=(Pt||b(" + + +``` + + +### API + +The ``Reveal`` object exposes a JavaScript API for controlling navigation and reading state: + +```javascript +// Navigation +Reveal.slide( indexh, indexv, indexf ); +Reveal.left(); +Reveal.right(); +Reveal.up(); +Reveal.down(); +Reveal.prev(); +Reveal.next(); +Reveal.prevFragment(); +Reveal.nextFragment(); + +// Toggle presentation states, optionally pass true/false to force on/off +Reveal.toggleOverview(); +Reveal.togglePause(); +Reveal.toggleAutoSlide(); + +// Change a config value at runtime +Reveal.configure({ controls: true }); + +// Returns the present configuration options +Reveal.getConfig(); + +// Fetch the current scale of the presentation +Reveal.getScale(); + +// Retrieves the previous and current slide elements +Reveal.getPreviousSlide(); +Reveal.getCurrentSlide(); + +Reveal.getIndices(); // { h: 0, v: 0 } } +Reveal.getProgress(); // 0-1 +Reveal.getTotalSlides(); + +// Returns the speaker notes for the current slide +Reveal.getSlideNotes(); + +// State checks +Reveal.isFirstSlide(); +Reveal.isLastSlide(); +Reveal.isOverview(); +Reveal.isPaused(); +Reveal.isAutoSliding(); +``` + +### Slide Changed Event + +A 'slidechanged' event is fired each time the slide is changed (regardless of state). The event object holds the index values of the current slide as well as a reference to the previous and current slide HTML nodes. + +Some libraries, like MathJax (see [#226](https://github.com/hakimel/reveal.js/issues/226#issuecomment-10261609)), get confused by the transforms and display states of slides. Often times, this can be fixed by calling their update or render function from this callback. + +```javascript +Reveal.addEventListener( 'slidechanged', function( event ) { + // event.previousSlide, event.currentSlide, event.indexh, event.indexv +} ); +``` + +### Presentation State + +The presentation's current state can be fetched by using the `getState` method. A state object contains all of the information required to put the presentation back as it was when `getState` was first called. Sort of like a snapshot. It's a simple object that can easily be stringified and persisted or sent over the wire. + +```javascript +Reveal.slide( 1 ); +// we're on slide 1 + +var state = Reveal.getState(); + +Reveal.slide( 3 ); +// we're on slide 3 + +Reveal.setState( state ); +// we're back on slide 1 +``` + +### Slide States + +If you set ``data-state="somestate"`` on a slide ``
``, "somestate" will be applied as a class on the document element when that slide is opened. This allows you to apply broad style changes to the page based on the active slide. + +Furthermore you can also listen to these changes in state via JavaScript: + +```javascript +Reveal.addEventListener( 'somestate', function() { + // TODO: Sprinkle magic +}, false ); +``` + +### Slide Backgrounds + +Slides are contained within a limited portion of the screen by default to allow them to fit any display and scale uniformly. You can apply full page backgrounds outside of the slide area by adding a ```data-background``` attribute to your ```
``` elements. Four different types of backgrounds are supported: color, image, video and iframe. Below are a few examples. + +```html +
+

All CSS color formats are supported, like rgba() or hsl().

+
+
+

This slide will have a full-size background image.

+
+
+

This background image will be sized to 100px and repeated.

+
+
+

Video. Multiple sources can be defined using a comma separated list. Video will loop when the data-background-video-loop attribute is provided.

+
+
+

Embeds a web page as a background. Note that the page won't be interactive.

+
+``` + +Backgrounds transition using a fade animation by default. This can be changed to a linear sliding transition by passing ```backgroundTransition: 'slide'``` to the ```Reveal.initialize()``` call. Alternatively you can set ```data-background-transition``` on any section with a background to override that specific transition. + + +### Parallax Background + +If you want to use a parallax scrolling background, set the first two config properties below when initializing reveal.js (the other two are optional). + +```javascript +Reveal.initialize({ + + // Parallax background image + parallaxBackgroundImage: '', // e.g. "https://s3.amazonaws.com/hakim-static/reveal-js/reveal-parallax-1.jpg" + + // Parallax background size + parallaxBackgroundSize: '', // CSS syntax, e.g. "2100px 900px" - currently only pixels are supported (don't use % or auto) + + // Number of pixels to move the parallax background per slide + // - Calculated automatically unless specified + // - Set to 0 to disable movement along an axis + parallaxBackgroundHorizontal: 200, + parallaxBackgroundVertical: 50 + +}); +``` + +Make sure that the background size is much bigger than screen size to allow for some scrolling. [View example](http://lab.hakim.se/reveal-js/?parallaxBackgroundImage=https%3A%2F%2Fs3.amazonaws.com%2Fhakim-static%2Freveal-js%2Freveal-parallax-1.jpg¶llaxBackgroundSize=2100px%20900px). + + + +### Slide Transitions +The global presentation transition is set using the ```transition``` config value. You can override the global transition for a specific slide by using the ```data-transition``` attribute: + +```html +
+

This slide will override the presentation transition and zoom!

+
+ +
+

Choose from three transition speeds: default, fast or slow!

+
+``` + +You can also use different in and out transitions for the same slide: + +```html +
+ The train goes on … +
+
+ and on … +
+
+ and stops. +
+
+ (Passengers entering and leaving) +
+
+ And it starts again. +
+``` + + +### Internal links + +It's easy to link between slides. The first example below targets the index of another slide whereas the second targets a slide with an ID attribute (```
```): + +```html +Link +Link +``` + +You can also add relative navigation links, similar to the built in reveal.js controls, by appending one of the following classes on any element. Note that each element is automatically given an ```enabled``` class when it's a valid navigation route based on the current slide. + +```html + + + + + + +``` + + +### Fragments +Fragments are used to highlight individual elements on a slide. Every element with the class ```fragment``` will be stepped through before moving on to the next slide. Here's an example: http://lab.hakim.se/reveal-js/#/fragments + +The default fragment style is to start out invisible and fade in. This style can be changed by appending a different class to the fragment: + +```html +
+

grow

+

shrink

+

fade-out

+

visible only once

+

blue only once

+

highlight-red

+

highlight-green

+

highlight-blue

+
+``` + +Multiple fragments can be applied to the same element sequentially by wrapping it, this will fade in the text on the first step and fade it back out on the second. + +```html +
+ + I'll fade in, then out + +
+``` + +The display order of fragments can be controlled using the ```data-fragment-index``` attribute. + +```html +
+

Appears last

+

Appears first

+

Appears second

+
+``` + +### Fragment events + +When a slide fragment is either shown or hidden reveal.js will dispatch an event. + +Some libraries, like MathJax (see #505), get confused by the initially hidden fragment elements. Often times this can be fixed by calling their update or render function from this callback. + +```javascript +Reveal.addEventListener( 'fragmentshown', function( event ) { + // event.fragment = the fragment DOM element +} ); +Reveal.addEventListener( 'fragmenthidden', function( event ) { + // event.fragment = the fragment DOM element +} ); +``` + +### Code syntax highlighting + +By default, Reveal is configured with [highlight.js](https://highlightjs.org/) for code syntax highlighting. Below is an example with clojure code that will be syntax highlighted. When the `data-trim` attribute is present, surrounding whitespace is automatically removed. HTML will be escaped by default. To avoid this, for example if you are using `` to call out a line of code, add the `data-noescape` attribute to the `` element. + +```html +
+ 

+(def lazy-fib
+  (concat
+   [0 1]
+   ((fn rfib [a b]
+        (lazy-cons (+ a b) (rfib b (+ a b)))) 0 1)))
+
+
+``` + +### Slide number +If you would like to display the page number of the current slide you can do so using the ```slideNumber``` configuration value. + +```javascript +// Shows the slide number using default formatting +Reveal.configure({ slideNumber: true }); + +// Slide number formatting can be configured using these variables: +// "h.v": horizontal . vertical slide number (default) +// "h/v": horizontal / vertical slide number +// "c": flattened slide number +// "c/t": flattened slide number / total slides +Reveal.configure({ slideNumber: 'c/t' }); + +``` + + +### Overview mode + +Press "Esc" or "o" keys to toggle the overview mode on and off. While you're in this mode, you can still navigate between slides, +as if you were at 1,000 feet above your presentation. The overview mode comes with a few API hooks: + +```javascript +Reveal.addEventListener( 'overviewshown', function( event ) { /* ... */ } ); +Reveal.addEventListener( 'overviewhidden', function( event ) { /* ... */ } ); + +// Toggle the overview mode programmatically +Reveal.toggleOverview(); +``` + +### Fullscreen mode +Just press »F« on your keyboard to show your presentation in fullscreen mode. Press the »ESC« key to exit fullscreen mode. + + +### Embedded media +Embedded HTML5 `
+ + + + + + + + + + + + + + + + + + + + + + + + +
ItemValueQuantity
Apples$17
Lemonade$218
Bread$32
+ + +
+

Clever Quotes

+

+ These guys come in two forms, inline: + “The nice thing about standards is that there are so many to choose from” and block: +

+
+ “For years there has been a theory that millions of monkeys typing at random on millions of typewriters would + reproduce the entire works of Shakespeare. The Internet has proven this theory to be untrue.” +
+
+ +
+

Intergalactic Interconnections

+

+ You can link between slides internally, + like this. +

+
+ +
+

Speaker View

+

There's a speaker view. It includes a timer, preview of the upcoming slide as well as your speaker notes.

+

Press the S key to try it out.

+ + +
+ +
+

Export to PDF

+

Presentations can be exported to PDF, here's an example:

+ +
+ +
+

Global State

+

+ Set data-state="something" on a slide and "something" + will be added as a class to the document element when the slide is open. This lets you + apply broader style changes, like switching the page background. +

+
+ +
+

State Events

+

+ Additionally custom events can be triggered on a per slide basis by binding to the data-state name. +

+ 

+Reveal.addEventListener( 'customevent', function() {
+	console.log( '"customevent" has fired' );
+} );
+
+
+ +
+

Take a Moment

+

+ Press B or . on your keyboard to pause the presentation. This is helpful when you're on stage and want to take distracting slides off the screen. +

+
+ +
+

Much more

+ +
+ +
+

THE END

+

+ - Try the online editor
+ - Source code & documentation +

+
+ +
+ +
+ + + + + + + + diff --git a/_site/reveal.js/js/reveal.js b/_site/reveal.js/js/reveal.js new file mode 100644 index 0000000..2c92954 --- /dev/null +++ b/_site/reveal.js/js/reveal.js @@ -0,0 +1,4677 @@ +/*! + * reveal.js + * http://lab.hakim.se/reveal-js + * MIT licensed + * + * Copyright (C) 2016 Hakim El Hattab, http://hakim.se + */ +(function( root, factory ) { + if( typeof define === 'function' && define.amd ) { + // AMD. Register as an anonymous module. + define( function() { + root.Reveal = factory(); + return root.Reveal; + } ); + } else if( typeof exports === 'object' ) { + // Node. Does not work with strict CommonJS. + module.exports = factory(); + } else { + // Browser globals. + root.Reveal = factory(); + } +}( this, function() { + + 'use strict'; + + var Reveal; + + var SLIDES_SELECTOR = '.slides section', + HORIZONTAL_SLIDES_SELECTOR = '.slides>section', + VERTICAL_SLIDES_SELECTOR = '.slides>section.present>section', + HOME_SLIDE_SELECTOR = '.slides>section:first-of-type', + + // Configuration 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: 1.5, + + // Display controls in the bottom right corner + controls: true, + + // Display a presentation progress bar + progress: true, + + // Display the page number of the current slide + slideNumber: false, + + // Push each slide change to the browser history + history: false, + + // Enable keyboard shortcuts for navigation + keyboard: true, + + // Optional function that blocks keyboard events when retuning false + keyboardCondition: null, + + // Enable the slide overview mode + overview: true, + + // Vertical centering of slides + center: true, + + // Enables touch navigation on devices with touch input + touch: true, + + // Loop the presentation + loop: false, + + // Change the presentation direction to be RTL + rtl: false, + + // Turns fragments on and off globally + fragments: true, + + // Flags if the presentation is running in an embedded mode, + // i.e. contained within a limited portion of the screen + embedded: false, + + // Flags if we should show a help overlay when the questionmark + // key is pressed + help: true, + + // Flags if it should be possible to pause the presentation (blackout) + pause: true, + + // Flags if speaker notes should be visible to all viewers + showNotes: false, + + // Number of milliseconds between automatically proceeding to the + // next slide, disabled when set to 0, this value can be overwritten + // by using a data-autoslide attribute on your slides + autoSlide: 0, + + // Stop auto-sliding after user input + autoSlideStoppable: true, + + // Enable slide navigation via mouse wheel + mouseWheel: false, + + // Apply a 3D roll to links on hover + rollingLinks: false, + + // Hides the address bar on mobile devices + hideAddressBar: true, + + // Opens links in an iframe preview overlay + previewLinks: false, + + // Exposes the reveal.js API through window.postMessage + postMessage: true, + + // Dispatches all reveal.js events to the parent window through postMessage + postMessageEvents: false, + + // Focuses body when page changes visiblity to ensure keyboard shortcuts work + focusBodyOnPageVisibilityChange: true, + + // Transition style + transition: 'slide', // none/fade/slide/convex/concave/zoom + + // Transition speed + transitionSpeed: 'default', // default/fast/slow + + // Transition style for full page slide backgrounds + backgroundTransition: 'fade', // none/fade/slide/convex/concave/zoom + + // Parallax background image + parallaxBackgroundImage: '', // CSS syntax, e.g. "a.jpg" + + // Parallax background size + parallaxBackgroundSize: '', // CSS syntax, e.g. "3000px 2000px" + + // Amount of pixels to move the parallax background per slide step + parallaxBackgroundHorizontal: null, + parallaxBackgroundVertical: null, + + // Number of slides away from the current that are visible + viewDistance: 3, + + // Script dependencies to load + dependencies: [] + + }, + + // Flags if reveal.js is loaded (has dispatched the 'ready' event) + loaded = false, + + // Flags if the overview mode is currently active + overview = false, + + // The horizontal and vertical index of the currently active slide + indexh, + indexv, + + // The previous and current slide HTML elements + previousSlide, + currentSlide, + + previousBackground, + + // Slides may hold a data-state attribute which we pick up and apply + // as a class to the body. This list contains the combined state of + // all current slides. + state = [], + + // The current scale of the presentation (see width/height config) + scale = 1, + + // CSS transform that is currently applied to the slides container, + // split into two groups + slidesTransform = { layout: '', overview: '' }, + + // Cached references to DOM elements + dom = {}, + + // Features supported by the browser, see #checkCapabilities() + features = {}, + + // Client is a mobile device, see #checkCapabilities() + isMobileDevice, + + // Throttles mouse wheel navigation + lastMouseWheelStep = 0, + + // Delays updates to the URL due to a Chrome thumbnailer bug + writeURLTimeout = 0, + + // Flags if the interaction event listeners are bound + eventsAreBound = false, + + // The current auto-slide duration + autoSlide = 0, + + // Auto slide properties + autoSlidePlayer, + autoSlideTimeout = 0, + autoSlideStartTime = -1, + autoSlidePaused = false, + + // Holds information about the currently ongoing touch input + touch = { + startX: 0, + startY: 0, + startSpan: 0, + startCount: 0, + captured: false, + threshold: 40 + }, + + // Holds information about the keyboard shortcuts + keyboardShortcuts = { + 'N , SPACE': 'Next slide', + 'P': 'Previous slide', + '← , H': 'Navigate left', + '→ , L': 'Navigate right', + '↑ , K': 'Navigate up', + '↓ , J': 'Navigate down', + 'Home': 'First slide', + 'End': 'Last slide', + 'B , .': 'Pause', + 'F': 'Fullscreen', + 'ESC, O': 'Slide overview' + }; + + /** + * Starts up the presentation if the client is capable. + */ + function initialize( options ) { + + checkCapabilities(); + + if( !features.transforms2d && !features.transforms3d ) { + document.body.setAttribute( 'class', 'no-transforms' ); + + // Since JS won't be running any further, we load all lazy + // loading elements upfront + var images = toArray( document.getElementsByTagName( 'img' ) ), + iframes = toArray( document.getElementsByTagName( 'iframe' ) ); + + var lazyLoadable = images.concat( iframes ); + + for( var i = 0, len = lazyLoadable.length; i < len; i++ ) { + var element = lazyLoadable[i]; + if( element.getAttribute( 'data-src' ) ) { + element.setAttribute( 'src', element.getAttribute( 'data-src' ) ); + element.removeAttribute( 'data-src' ); + } + } + + // If the browser doesn't support core features we won't be + // using JavaScript to control the presentation + return; + } + + // Cache references to key DOM elements + dom.wrapper = document.querySelector( '.reveal' ); + dom.slides = document.querySelector( '.reveal .slides' ); + + // Force a layout when the whole page, incl fonts, has loaded + window.addEventListener( 'load', layout, false ); + + var query = Reveal.getQueryHash(); + + // Do not accept new dependencies via query config to avoid + // the potential of malicious script injection + if( typeof query['dependencies'] !== 'undefined' ) delete query['dependencies']; + + // Copy options over to our config object + extend( config, options ); + extend( config, query ); + + // Hide the address bar in mobile browsers + hideAddressBar(); + + // Loads the dependencies and continues to #start() once done + load(); + + } + + /** + * Inspect the client to see what it's capable of, this + * should only happens once per runtime. + */ + function checkCapabilities() { + + features.transforms3d = 'WebkitPerspective' in document.body.style || + 'MozPerspective' in document.body.style || + 'msPerspective' in document.body.style || + 'OPerspective' in document.body.style || + 'perspective' in document.body.style; + + features.transforms2d = 'WebkitTransform' in document.body.style || + 'MozTransform' in document.body.style || + 'msTransform' in document.body.style || + 'OTransform' in document.body.style || + 'transform' in document.body.style; + + features.requestAnimationFrameMethod = window.requestAnimationFrame || window.webkitRequestAnimationFrame || window.mozRequestAnimationFrame; + features.requestAnimationFrame = typeof features.requestAnimationFrameMethod === 'function'; + + features.canvas = !!document.createElement( 'canvas' ).getContext; + + features.touch = !!( 'ontouchstart' in window ); + + // Transitions in the overview are disabled in desktop and + // mobile Safari due to lag + features.overviewTransitions = !/Version\/[\d\.]+.*Safari/.test( navigator.userAgent ); + + isMobileDevice = /(iphone|ipod|ipad|android)/gi.test( navigator.userAgent ); + + } + + /** + * Loads the dependencies of reveal.js. Dependencies are + * defined via the configuration option 'dependencies' + * and will be loaded prior to starting/binding reveal.js. + * Some dependencies may have an 'async' flag, if so they + * will load after reveal.js has been started up. + */ + function load() { + + var scripts = [], + scriptsAsync = [], + scriptsToPreload = 0; + + // Called once synchronous scripts finish loading + function proceed() { + if( scriptsAsync.length ) { + // Load asynchronous scripts + head.js.apply( null, scriptsAsync ); + } + + start(); + } + + function loadScript( s ) { + head.ready( s.src.match( /([\w\d_\-]*)\.?js$|[^\\\/]*$/i )[0], function() { + // Extension may contain callback functions + if( typeof s.callback === 'function' ) { + s.callback.apply( this ); + } + + if( --scriptsToPreload === 0 ) { + proceed(); + } + }); + } + + for( var i = 0, len = config.dependencies.length; i < len; i++ ) { + var s = config.dependencies[i]; + + // Load if there's no condition or the condition is truthy + if( !s.condition || s.condition() ) { + if( s.async ) { + scriptsAsync.push( s.src ); + } + else { + scripts.push( s.src ); + } + + loadScript( s ); + } + } + + if( scripts.length ) { + scriptsToPreload = scripts.length; + + // Load synchronous scripts + head.js.apply( null, scripts ); + } + else { + proceed(); + } + + } + + /** + * Starts up reveal.js by binding input events and navigating + * to the current URL deeplink if there is one. + */ + function start() { + + // Make sure we've got all the DOM elements we need + setupDOM(); + + // Listen to messages posted to this window + setupPostMessage(); + + // Prevent iframes from scrolling the slides out of view + setupIframeScrollPrevention(); + + // Resets all vertical slides so that only the first is visible + resetVerticalSlides(); + + // Updates the presentation to match the current configuration values + configure(); + + // Read the initial hash + readURL(); + + // Update all backgrounds + updateBackground( true ); + + // Notify listeners that the presentation is ready but use a 1ms + // timeout to ensure it's not fired synchronously after #initialize() + setTimeout( function() { + // Enable transitions now that we're loaded + dom.slides.classList.remove( 'no-transition' ); + + loaded = true; + + dispatchEvent( 'ready', { + 'indexh': indexh, + 'indexv': indexv, + 'currentSlide': currentSlide + } ); + }, 1 ); + + // Special setup and config is required when printing to PDF + if( isPrintingPDF() ) { + removeEventListeners(); + + // The document needs to have loaded for the PDF layout + // measurements to be accurate + if( document.readyState === 'complete' ) { + setupPDF(); + } + else { + window.addEventListener( 'load', setupPDF ); + } + } + + } + + /** + * Finds and stores references to DOM elements which are + * required by the presentation. If a required element is + * not found, it is created. + */ + function setupDOM() { + + // Prevent transitions while we're loading + dom.slides.classList.add( 'no-transition' ); + + // Background element + dom.background = createSingletonNode( dom.wrapper, 'div', 'backgrounds', null ); + + // Progress bar + dom.progress = createSingletonNode( dom.wrapper, 'div', 'progress', '' ); + dom.progressbar = dom.progress.querySelector( 'span' ); + + // Arrow controls + createSingletonNode( dom.wrapper, 'aside', 'controls', + '' + + '' + + '' + + '' ); + + // Slide number + dom.slideNumber = createSingletonNode( dom.wrapper, 'div', 'slide-number', '' ); + + // Element containing notes that are visible to the audience + dom.speakerNotes = createSingletonNode( dom.wrapper, 'div', 'speaker-notes', null ); + dom.speakerNotes.setAttribute( 'data-prevent-swipe', '' ); + + // Overlay graphic which is displayed during the paused mode + createSingletonNode( dom.wrapper, 'div', 'pause-overlay', null ); + + // Cache references to elements + dom.controls = document.querySelector( '.reveal .controls' ); + dom.theme = document.querySelector( '#theme' ); + + dom.wrapper.setAttribute( 'role', 'application' ); + + // There can be multiple instances of controls throughout the page + dom.controlsLeft = toArray( document.querySelectorAll( '.navigate-left' ) ); + dom.controlsRight = toArray( document.querySelectorAll( '.navigate-right' ) ); + dom.controlsUp = toArray( document.querySelectorAll( '.navigate-up' ) ); + dom.controlsDown = toArray( document.querySelectorAll( '.navigate-down' ) ); + dom.controlsPrev = toArray( document.querySelectorAll( '.navigate-prev' ) ); + dom.controlsNext = toArray( document.querySelectorAll( '.navigate-next' ) ); + + dom.statusDiv = createStatusDiv(); + } + + /** + * Creates a hidden div with role aria-live to announce the + * current slide content. Hide the div off-screen to make it + * available only to Assistive Technologies. + */ + function createStatusDiv() { + + var statusDiv = document.getElementById( 'aria-status-div' ); + if( !statusDiv ) { + statusDiv = document.createElement( 'div' ); + statusDiv.style.position = 'absolute'; + statusDiv.style.height = '1px'; + statusDiv.style.width = '1px'; + statusDiv.style.overflow ='hidden'; + statusDiv.style.clip = 'rect( 1px, 1px, 1px, 1px )'; + statusDiv.setAttribute( 'id', 'aria-status-div' ); + statusDiv.setAttribute( 'aria-live', 'polite' ); + statusDiv.setAttribute( 'aria-atomic','true' ); + dom.wrapper.appendChild( statusDiv ); + } + return statusDiv; + + } + + /** + * Configures the presentation for printing to a static + * PDF. + */ + function setupPDF() { + + var slideSize = getComputedSlideSize( window.innerWidth, window.innerHeight ); + + // Dimensions of the PDF pages + var pageWidth = Math.floor( slideSize.width * ( 1 + config.margin ) ), + pageHeight = Math.floor( slideSize.height * ( 1 + config.margin ) ); + + // Dimensions of slides within the pages + var slideWidth = slideSize.width, + slideHeight = slideSize.height; + + // Let the browser know what page size we want to print + injectStyleSheet( '@page{size:'+ pageWidth +'px '+ pageHeight +'px; margin: 0;}' ); + + // Limit the size of certain elements to the dimensions of the slide + injectStyleSheet( '.reveal section>img, .reveal section>video, .reveal section>iframe{max-width: '+ slideWidth +'px; max-height:'+ slideHeight +'px}' ); + + document.body.classList.add( 'print-pdf' ); + document.body.style.width = pageWidth + 'px'; + document.body.style.height = pageHeight + 'px'; + + // Add each slide's index as attributes on itself, we need these + // indices to generate slide numbers below + toArray( dom.wrapper.querySelectorAll( HORIZONTAL_SLIDES_SELECTOR ) ).forEach( function( hslide, h ) { + hslide.setAttribute( 'data-index-h', h ); + + if( hslide.classList.contains( 'stack' ) ) { + toArray( hslide.querySelectorAll( 'section' ) ).forEach( function( vslide, v ) { + vslide.setAttribute( 'data-index-h', h ); + vslide.setAttribute( 'data-index-v', v ); + } ); + } + } ); + + // Slide and slide background layout + toArray( dom.wrapper.querySelectorAll( SLIDES_SELECTOR ) ).forEach( function( slide ) { + + // Vertical stacks are not centred since their section + // children will be + if( slide.classList.contains( 'stack' ) === false ) { + // Center the slide inside of the page, giving the slide some margin + var left = ( pageWidth - slideWidth ) / 2, + top = ( pageHeight - slideHeight ) / 2; + + var contentHeight = getAbsoluteHeight( slide ); + var numberOfPages = Math.max( Math.ceil( contentHeight / pageHeight ), 1 ); + + // Center slides vertically + if( numberOfPages === 1 && config.center || slide.classList.contains( 'center' ) ) { + top = Math.max( ( pageHeight - contentHeight ) / 2, 0 ); + } + + // Position the slide inside of the page + slide.style.left = left + 'px'; + slide.style.top = top + 'px'; + slide.style.width = slideWidth + 'px'; + + // TODO Backgrounds need to be multiplied when the slide + // stretches over multiple pages + var background = slide.querySelector( '.slide-background' ); + if( background ) { + background.style.width = pageWidth + 'px'; + background.style.height = ( pageHeight * numberOfPages ) + 'px'; + background.style.top = -top + 'px'; + background.style.left = -left + 'px'; + } + + // Inject notes if `showNotes` is enabled + if( config.showNotes ) { + var notes = getSlideNotes( slide ); + if( notes ) { + var notesSpacing = 8; + var notesElement = document.createElement( 'div' ); + notesElement.classList.add( 'speaker-notes' ); + notesElement.classList.add( 'speaker-notes-pdf' ); + notesElement.innerHTML = notes; + notesElement.style.left = ( notesSpacing - left ) + 'px'; + notesElement.style.bottom = ( notesSpacing - top ) + 'px'; + notesElement.style.width = ( pageWidth - notesSpacing*2 ) + 'px'; + slide.appendChild( notesElement ); + } + } + + // Inject slide numbers if `slideNumbers` are enabled + if( config.slideNumber ) { + var slideNumberH = parseInt( slide.getAttribute( 'data-index-h' ), 10 ) + 1, + slideNumberV = parseInt( slide.getAttribute( 'data-index-v' ), 10 ) + 1; + + var numberElement = document.createElement( 'div' ); + numberElement.classList.add( 'slide-number' ); + numberElement.classList.add( 'slide-number-pdf' ); + numberElement.innerHTML = formatSlideNumber( slideNumberH, '.', slideNumberV ); + background.appendChild( numberElement ); + } + } + + } ); + + // Show all fragments + toArray( dom.wrapper.querySelectorAll( SLIDES_SELECTOR + ' .fragment' ) ).forEach( function( fragment ) { + fragment.classList.add( 'visible' ); + } ); + + } + + /** + * This is an unfortunate necessity. Iframes can trigger the + * parent window to scroll, for example by focusing an input. + * This scrolling can not be prevented by hiding overflow in + * CSS so we have to resort to repeatedly checking if the + * browser has decided to offset our slides :( + */ + function setupIframeScrollPrevention() { + + if( dom.slides.querySelector( 'iframe' ) ) { + setInterval( function() { + if( dom.wrapper.scrollTop !== 0 || dom.wrapper.scrollLeft !== 0 ) { + dom.wrapper.scrollTop = 0; + dom.wrapper.scrollLeft = 0; + } + }, 500 ); + } + + } + + /** + * Creates an HTML element and returns a reference to it. + * If the element already exists the existing instance will + * be returned. + */ + function createSingletonNode( container, tagname, classname, innerHTML ) { + + // Find all nodes matching the description + var nodes = container.querySelectorAll( '.' + classname ); + + // Check all matches to find one which is a direct child of + // the specified container + for( var i = 0; i < nodes.length; i++ ) { + var testNode = nodes[i]; + if( testNode.parentNode === container ) { + return testNode; + } + } + + // If no node was found, create it now + var node = document.createElement( tagname ); + node.classList.add( classname ); + if( typeof innerHTML === 'string' ) { + node.innerHTML = innerHTML; + } + container.appendChild( node ); + + return node; + + } + + /** + * Creates the slide background elements and appends them + * to the background container. One element is created per + * slide no matter if the given slide has visible background. + */ + function createBackgrounds() { + + var printMode = isPrintingPDF(); + + // Clear prior backgrounds + dom.background.innerHTML = ''; + dom.background.classList.add( 'no-transition' ); + + // Iterate over all horizontal slides + toArray( dom.wrapper.querySelectorAll( HORIZONTAL_SLIDES_SELECTOR ) ).forEach( function( slideh ) { + + var backgroundStack; + + if( printMode ) { + backgroundStack = createBackground( slideh, slideh ); + } + else { + backgroundStack = createBackground( slideh, dom.background ); + } + + // Iterate over all vertical slides + toArray( slideh.querySelectorAll( 'section' ) ).forEach( function( slidev ) { + + if( printMode ) { + createBackground( slidev, slidev ); + } + else { + createBackground( slidev, backgroundStack ); + } + + backgroundStack.classList.add( 'stack' ); + + } ); + + } ); + + // Add parallax background if specified + if( config.parallaxBackgroundImage ) { + + dom.background.style.backgroundImage = 'url("' + config.parallaxBackgroundImage + '")'; + dom.background.style.backgroundSize = config.parallaxBackgroundSize; + + // Make sure the below properties are set on the element - these properties are + // needed for proper transitions to be set on the element via CSS. To remove + // annoying background slide-in effect when the presentation starts, apply + // these properties after short time delay + setTimeout( function() { + dom.wrapper.classList.add( 'has-parallax-background' ); + }, 1 ); + + } + else { + + dom.background.style.backgroundImage = ''; + dom.wrapper.classList.remove( 'has-parallax-background' ); + + } + + } + + /** + * Creates a background for the given slide. + * + * @param {HTMLElement} slide + * @param {HTMLElement} container The element that the background + * should be appended to + */ + function createBackground( slide, container ) { + + var data = { + background: slide.getAttribute( 'data-background' ), + backgroundSize: slide.getAttribute( 'data-background-size' ), + backgroundImage: slide.getAttribute( 'data-background-image' ), + backgroundVideo: slide.getAttribute( 'data-background-video' ), + backgroundIframe: slide.getAttribute( 'data-background-iframe' ), + backgroundColor: slide.getAttribute( 'data-background-color' ), + backgroundRepeat: slide.getAttribute( 'data-background-repeat' ), + backgroundPosition: slide.getAttribute( 'data-background-position' ), + backgroundTransition: slide.getAttribute( 'data-background-transition' ) + }; + + var element = document.createElement( 'div' ); + + // Carry over custom classes from the slide to the background + element.className = 'slide-background ' + slide.className.replace( /present|past|future/, '' ); + + if( data.background ) { + // Auto-wrap image urls in url(...) + if( /^(http|file|\/\/)/gi.test( data.background ) || /\.(svg|png|jpg|jpeg|gif|bmp)$/gi.test( data.background ) ) { + slide.setAttribute( 'data-background-image', data.background ); + } + else { + element.style.background = data.background; + } + } + + // Create a hash for this combination of background settings. + // This is used to determine when two slide backgrounds are + // the same. + if( data.background || data.backgroundColor || data.backgroundImage || data.backgroundVideo || data.backgroundIframe ) { + element.setAttribute( 'data-background-hash', data.background + + data.backgroundSize + + data.backgroundImage + + data.backgroundVideo + + data.backgroundIframe + + data.backgroundColor + + data.backgroundRepeat + + data.backgroundPosition + + data.backgroundTransition ); + } + + // Additional and optional background properties + if( data.backgroundSize ) element.style.backgroundSize = data.backgroundSize; + if( data.backgroundColor ) element.style.backgroundColor = data.backgroundColor; + if( data.backgroundRepeat ) element.style.backgroundRepeat = data.backgroundRepeat; + if( data.backgroundPosition ) element.style.backgroundPosition = data.backgroundPosition; + if( data.backgroundTransition ) element.setAttribute( 'data-background-transition', data.backgroundTransition ); + + container.appendChild( element ); + + // If backgrounds are being recreated, clear old classes + slide.classList.remove( 'has-dark-background' ); + slide.classList.remove( 'has-light-background' ); + + // If this slide has a background color, add a class that + // signals if it is light or dark. If the slide has no background + // color, no class will be set + var computedBackgroundColor = window.getComputedStyle( element ).backgroundColor; + if( computedBackgroundColor ) { + var rgb = colorToRgb( computedBackgroundColor ); + + // Ignore fully transparent backgrounds. Some browsers return + // rgba(0,0,0,0) when reading the computed background color of + // an element with no background + if( rgb && rgb.a !== 0 ) { + if( colorBrightness( computedBackgroundColor ) < 128 ) { + slide.classList.add( 'has-dark-background' ); + } + else { + slide.classList.add( 'has-light-background' ); + } + } + } + + return element; + + } + + /** + * Registers a listener to postMessage events, this makes it + * possible to call all reveal.js API methods from another + * window. For example: + * + * revealWindow.postMessage( JSON.stringify({ + * method: 'slide', + * args: [ 2 ] + * }), '*' ); + */ + function setupPostMessage() { + + if( config.postMessage ) { + window.addEventListener( 'message', function ( event ) { + var data = event.data; + + // Make sure we're dealing with JSON + if( typeof data === 'string' && data.charAt( 0 ) === '{' && data.charAt( data.length - 1 ) === '}' ) { + data = JSON.parse( data ); + + // Check if the requested method can be found + if( data.method && typeof Reveal[data.method] === 'function' ) { + Reveal[data.method].apply( Reveal, data.args ); + } + } + }, false ); + } + + } + + /** + * Applies the configuration settings from the config + * object. May be called multiple times. + */ + function configure( options ) { + + var numberOfSlides = dom.wrapper.querySelectorAll( SLIDES_SELECTOR ).length; + + dom.wrapper.classList.remove( config.transition ); + + // 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( features.transforms3d === false ) config.transition = 'linear'; + + dom.wrapper.classList.add( config.transition ); + + dom.wrapper.setAttribute( 'data-transition-speed', config.transitionSpeed ); + dom.wrapper.setAttribute( 'data-background-transition', config.backgroundTransition ); + + dom.controls.style.display = config.controls ? 'block' : 'none'; + dom.progress.style.display = config.progress ? 'block' : 'none'; + dom.slideNumber.style.display = config.slideNumber && !isPrintingPDF() ? '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' ); + } + + // Exit the paused mode if it was configured off + if( config.pause === false ) { + resume(); + } + + if( config.showNotes ) { + dom.speakerNotes.classList.add( 'visible' ); + } + else { + dom.speakerNotes.classList.remove( 'visible' ); + } + + 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 ); + } + + // Rolling 3D links + if( config.rollingLinks ) { + enableRollingLinks(); + } + else { + disableRollingLinks(); + } + + // Iframe link previews + if( config.previewLinks ) { + enablePreviewLinks(); + } + else { + disablePreviewLinks(); + enablePreviewLinks( '[data-preview-link]' ); + } + + // Remove existing auto-slide controls + if( autoSlidePlayer ) { + autoSlidePlayer.destroy(); + autoSlidePlayer = null; + } + + // Generate auto-slide controls if needed + if( numberOfSlides > 1 && config.autoSlide && config.autoSlideStoppable && features.canvas && features.requestAnimationFrame ) { + autoSlidePlayer = new Playback( dom.wrapper, function() { + return Math.min( Math.max( ( Date.now() - autoSlideStartTime ) / autoSlide, 0 ), 1 ); + } ); + + autoSlidePlayer.on( 'click', onAutoSlidePlayerClick ); + autoSlidePaused = false; + } + + // When fragments are turned off they should be visible + if( config.fragments === false ) { + toArray( dom.slides.querySelectorAll( '.fragment' ) ).forEach( function( element ) { + element.classList.add( 'visible' ); + element.classList.remove( 'current-fragment' ); + } ); + } + + sync(); + + } + + /** + * Binds all event listeners. + */ + function addEventListeners() { + + eventsAreBound = true; + + window.addEventListener( 'hashchange', onWindowHashChange, false ); + window.addEventListener( 'resize', onWindowResize, false ); + + if( config.touch ) { + dom.wrapper.addEventListener( 'touchstart', onTouchStart, false ); + dom.wrapper.addEventListener( 'touchmove', onTouchMove, false ); + dom.wrapper.addEventListener( 'touchend', onTouchEnd, false ); + + // Support pointer-style touch interaction as well + if( window.navigator.pointerEnabled ) { + // IE 11 uses un-prefixed version of pointer events + dom.wrapper.addEventListener( 'pointerdown', onPointerDown, false ); + dom.wrapper.addEventListener( 'pointermove', onPointerMove, false ); + dom.wrapper.addEventListener( 'pointerup', onPointerUp, false ); + } + else if( window.navigator.msPointerEnabled ) { + // IE 10 uses prefixed version of pointer events + dom.wrapper.addEventListener( 'MSPointerDown', onPointerDown, false ); + dom.wrapper.addEventListener( 'MSPointerMove', onPointerMove, false ); + dom.wrapper.addEventListener( 'MSPointerUp', onPointerUp, false ); + } + } + + if( config.keyboard ) { + document.addEventListener( 'keydown', onDocumentKeyDown, false ); + document.addEventListener( 'keypress', onDocumentKeyPress, false ); + } + + if( config.progress && dom.progress ) { + dom.progress.addEventListener( 'click', onProgressClicked, false ); + } + + if( config.focusBodyOnPageVisibilityChange ) { + var visibilityChange; + + if( 'hidden' in document ) { + visibilityChange = 'visibilitychange'; + } + else if( 'msHidden' in document ) { + visibilityChange = 'msvisibilitychange'; + } + else if( 'webkitHidden' in document ) { + visibilityChange = 'webkitvisibilitychange'; + } + + if( visibilityChange ) { + document.addEventListener( visibilityChange, onPageVisibilityChange, false ); + } + } + + // Listen to both touch and click events, in case the device + // supports both + var pointerEvents = [ 'touchstart', 'click' ]; + + // Only support touch for Android, fixes double navigations in + // stock browser + if( navigator.userAgent.match( /android/gi ) ) { + pointerEvents = [ 'touchstart' ]; + } + + pointerEvents.forEach( function( eventName ) { + dom.controlsLeft.forEach( function( el ) { el.addEventListener( eventName, onNavigateLeftClicked, false ); } ); + dom.controlsRight.forEach( function( el ) { el.addEventListener( eventName, onNavigateRightClicked, false ); } ); + dom.controlsUp.forEach( function( el ) { el.addEventListener( eventName, onNavigateUpClicked, false ); } ); + dom.controlsDown.forEach( function( el ) { el.addEventListener( eventName, onNavigateDownClicked, false ); } ); + dom.controlsPrev.forEach( function( el ) { el.addEventListener( eventName, onNavigatePrevClicked, false ); } ); + dom.controlsNext.forEach( function( el ) { el.addEventListener( eventName, onNavigateNextClicked, false ); } ); + } ); + + } + + /** + * Unbinds all event listeners. + */ + function removeEventListeners() { + + eventsAreBound = false; + + document.removeEventListener( 'keydown', onDocumentKeyDown, false ); + document.removeEventListener( 'keypress', onDocumentKeyPress, false ); + window.removeEventListener( 'hashchange', onWindowHashChange, false ); + window.removeEventListener( 'resize', onWindowResize, false ); + + dom.wrapper.removeEventListener( 'touchstart', onTouchStart, false ); + dom.wrapper.removeEventListener( 'touchmove', onTouchMove, false ); + dom.wrapper.removeEventListener( 'touchend', onTouchEnd, false ); + + // IE11 + if( window.navigator.pointerEnabled ) { + dom.wrapper.removeEventListener( 'pointerdown', onPointerDown, false ); + dom.wrapper.removeEventListener( 'pointermove', onPointerMove, false ); + dom.wrapper.removeEventListener( 'pointerup', onPointerUp, false ); + } + // IE10 + else if( window.navigator.msPointerEnabled ) { + dom.wrapper.removeEventListener( 'MSPointerDown', onPointerDown, false ); + dom.wrapper.removeEventListener( 'MSPointerMove', onPointerMove, false ); + dom.wrapper.removeEventListener( 'MSPointerUp', onPointerUp, false ); + } + + if ( config.progress && dom.progress ) { + dom.progress.removeEventListener( 'click', onProgressClicked, false ); + } + + [ 'touchstart', 'click' ].forEach( function( eventName ) { + dom.controlsLeft.forEach( function( el ) { el.removeEventListener( eventName, onNavigateLeftClicked, false ); } ); + dom.controlsRight.forEach( function( el ) { el.removeEventListener( eventName, onNavigateRightClicked, false ); } ); + dom.controlsUp.forEach( function( el ) { el.removeEventListener( eventName, onNavigateUpClicked, false ); } ); + dom.controlsDown.forEach( function( el ) { el.removeEventListener( eventName, onNavigateDownClicked, false ); } ); + dom.controlsPrev.forEach( function( el ) { el.removeEventListener( eventName, onNavigatePrevClicked, false ); } ); + dom.controlsNext.forEach( function( el ) { el.removeEventListener( eventName, onNavigateNextClicked, false ); } ); + } ); + + } + + /** + * Extend object a with the properties of object b. + * If there's a conflict, object b takes precedence. + */ + function extend( a, b ) { + + for( var i in b ) { + a[ i ] = b[ i ]; + } + + } + + /** + * Converts the target object to an array. + */ + function toArray( o ) { + + return Array.prototype.slice.call( o ); + + } + + /** + * Utility for deserializing a value. + */ + function deserialize( value ) { + + if( typeof value === 'string' ) { + if( value === 'null' ) return null; + else if( value === 'true' ) return true; + else if( value === 'false' ) return false; + else if( value.match( /^\d+$/ ) ) return parseFloat( value ); + } + + return value; + + } + + /** + * Measures the distance in pixels between point a + * and point b. + * + * @param {Object} a point with x/y properties + * @param {Object} b point with x/y properties + */ + function distanceBetween( a, b ) { + + var dx = a.x - b.x, + dy = a.y - b.y; + + return Math.sqrt( dx*dx + dy*dy ); + + } + + /** + * Applies a CSS transform to the target element. + */ + function transformElement( element, transform ) { + + element.style.WebkitTransform = transform; + element.style.MozTransform = transform; + element.style.msTransform = transform; + element.style.transform = transform; + + } + + /** + * Applies CSS transforms to the slides container. The container + * is transformed from two separate sources: layout and the overview + * mode. + */ + function transformSlides( transforms ) { + + // Pick up new transforms from arguments + if( typeof transforms.layout === 'string' ) slidesTransform.layout = transforms.layout; + if( typeof transforms.overview === 'string' ) slidesTransform.overview = transforms.overview; + + // Apply the transforms to the slides container + if( slidesTransform.layout ) { + transformElement( dom.slides, slidesTransform.layout + ' ' + slidesTransform.overview ); + } + else { + transformElement( dom.slides, slidesTransform.overview ); + } + + } + + /** + * Injects the given CSS styles into the DOM. + */ + function injectStyleSheet( value ) { + + var tag = document.createElement( 'style' ); + tag.type = 'text/css'; + if( tag.styleSheet ) { + tag.styleSheet.cssText = value; + } + else { + tag.appendChild( document.createTextNode( value ) ); + } + document.getElementsByTagName( 'head' )[0].appendChild( tag ); + + } + + /** + * Converts various color input formats to an {r:0,g:0,b:0} object. + * + * @param {String} color The string representation of a color, + * the following formats are supported: + * - #000 + * - #000000 + * - rgb(0,0,0) + */ + function colorToRgb( color ) { + + var hex3 = color.match( /^#([0-9a-f]{3})$/i ); + if( hex3 && hex3[1] ) { + hex3 = hex3[1]; + return { + r: parseInt( hex3.charAt( 0 ), 16 ) * 0x11, + g: parseInt( hex3.charAt( 1 ), 16 ) * 0x11, + b: parseInt( hex3.charAt( 2 ), 16 ) * 0x11 + }; + } + + var hex6 = color.match( /^#([0-9a-f]{6})$/i ); + if( hex6 && hex6[1] ) { + hex6 = hex6[1]; + return { + r: parseInt( hex6.substr( 0, 2 ), 16 ), + g: parseInt( hex6.substr( 2, 2 ), 16 ), + b: parseInt( hex6.substr( 4, 2 ), 16 ) + }; + } + + var rgb = color.match( /^rgb\s*\(\s*(\d+)\s*,\s*(\d+)\s*,\s*(\d+)\s*\)$/i ); + if( rgb ) { + return { + r: parseInt( rgb[1], 10 ), + g: parseInt( rgb[2], 10 ), + b: parseInt( rgb[3], 10 ) + }; + } + + var rgba = color.match( /^rgba\s*\(\s*(\d+)\s*,\s*(\d+)\s*,\s*(\d+)\s*\,\s*([\d]+|[\d]*.[\d]+)\s*\)$/i ); + if( rgba ) { + return { + r: parseInt( rgba[1], 10 ), + g: parseInt( rgba[2], 10 ), + b: parseInt( rgba[3], 10 ), + a: parseFloat( rgba[4] ) + }; + } + + return null; + + } + + /** + * Calculates brightness on a scale of 0-255. + * + * @param color See colorStringToRgb for supported formats. + */ + function colorBrightness( color ) { + + if( typeof color === 'string' ) color = colorToRgb( color ); + + if( color ) { + return ( color.r * 299 + color.g * 587 + color.b * 114 ) / 1000; + } + + return null; + + } + + /** + * Retrieves the height of the given element by looking + * at the position and height of its immediate children. + */ + function getAbsoluteHeight( element ) { + + var height = 0; + + if( element ) { + var absoluteChildren = 0; + + toArray( element.childNodes ).forEach( function( child ) { + + if( typeof child.offsetTop === 'number' && child.style ) { + // Count # of abs children + if( window.getComputedStyle( child ).position === 'absolute' ) { + absoluteChildren += 1; + } + + height = Math.max( height, child.offsetTop + child.offsetHeight ); + } + + } ); + + // If there are no absolute children, use offsetHeight + if( absoluteChildren === 0 ) { + height = element.offsetHeight; + } + + } + + return height; + + } + + /** + * Returns the remaining height within the parent of the + * target element. + * + * remaining height = [ configured parent height ] - [ current parent height ] + */ + function getRemainingHeight( element, height ) { + + height = height || 0; + + if( element ) { + var newHeight, oldHeight = element.style.height; + + // Change the .stretch element height to 0 in order find the height of all + // the other elements + element.style.height = '0px'; + newHeight = height - element.parentNode.offsetHeight; + + // Restore the old height, just in case + element.style.height = oldHeight + 'px'; + + return newHeight; + } + + return height; + + } + + /** + * Checks if this instance is being used to print a PDF. + */ + function isPrintingPDF() { + + return ( /print-pdf/gi ).test( window.location.search ); + + } + + /** + * Hides the address bar if we're on a mobile device. + */ + function hideAddressBar() { + + if( config.hideAddressBar && isMobileDevice ) { + // Events that should trigger the address bar to hide + window.addEventListener( 'load', removeAddressBar, false ); + window.addEventListener( 'orientationchange', removeAddressBar, false ); + } + + } + + /** + * Causes the address bar to hide on mobile devices, + * more vertical space ftw. + */ + function removeAddressBar() { + + setTimeout( function() { + window.scrollTo( 0, 1 ); + }, 10 ); + + } + + /** + * Dispatches an event of the specified type from the + * reveal DOM element. + */ + function dispatchEvent( type, args ) { + + var event = document.createEvent( 'HTMLEvents', 1, 2 ); + event.initEvent( type, true, true ); + extend( event, args ); + dom.wrapper.dispatchEvent( event ); + + // If we're in an iframe, post each reveal.js event to the + // parent window. Used by the notes plugin + if( config.postMessageEvents && window.parent !== window.self ) { + window.parent.postMessage( JSON.stringify({ namespace: 'reveal', eventName: type, state: getState() }), '*' ); + } + + } + + /** + * Wrap all links in 3D goodness. + */ + function enableRollingLinks() { + + if( features.transforms3d && !( 'msPerspective' in document.body.style ) ) { + var anchors = dom.wrapper.querySelectorAll( SLIDES_SELECTOR + ' a' ); + + for( var i = 0, len = anchors.length; i < len; i++ ) { + var anchor = anchors[i]; + + if( anchor.textContent && !anchor.querySelector( '*' ) && ( !anchor.className || !anchor.classList.contains( anchor, 'roll' ) ) ) { + var span = document.createElement('span'); + span.setAttribute('data-title', anchor.text); + span.innerHTML = anchor.innerHTML; + + anchor.classList.add( 'roll' ); + anchor.innerHTML = ''; + anchor.appendChild(span); + } + } + } + + } + + /** + * Unwrap all 3D links. + */ + function disableRollingLinks() { + + var anchors = dom.wrapper.querySelectorAll( SLIDES_SELECTOR + ' a.roll' ); + + for( var i = 0, len = anchors.length; i < len; i++ ) { + var anchor = anchors[i]; + var span = anchor.querySelector( 'span' ); + + if( span ) { + anchor.classList.remove( 'roll' ); + anchor.innerHTML = span.innerHTML; + } + } + + } + + /** + * Bind preview frame links. + */ + function enablePreviewLinks( selector ) { + + var anchors = toArray( document.querySelectorAll( selector ? selector : 'a' ) ); + + anchors.forEach( function( element ) { + if( /^(http|www)/gi.test( element.getAttribute( 'href' ) ) ) { + element.addEventListener( 'click', onPreviewLinkClicked, false ); + } + } ); + + } + + /** + * Unbind preview frame links. + */ + function disablePreviewLinks() { + + var anchors = toArray( document.querySelectorAll( 'a' ) ); + + anchors.forEach( function( element ) { + if( /^(http|www)/gi.test( element.getAttribute( 'href' ) ) ) { + element.removeEventListener( 'click', onPreviewLinkClicked, false ); + } + } ); + + } + + /** + * Opens a preview window for the target URL. + */ + function showPreview( url ) { + + closeOverlay(); + + dom.overlay = document.createElement( 'div' ); + dom.overlay.classList.add( 'overlay' ); + dom.overlay.classList.add( 'overlay-preview' ); + dom.wrapper.appendChild( dom.overlay ); + + dom.overlay.innerHTML = [ + '
', + '', + '', + '
', + '', + '
', + '', + '
' + ].join(''); + + dom.overlay.querySelector( 'iframe' ).addEventListener( 'load', function( event ) { + dom.overlay.classList.add( 'loaded' ); + }, false ); + + dom.overlay.querySelector( '.close' ).addEventListener( 'click', function( event ) { + closeOverlay(); + event.preventDefault(); + }, false ); + + dom.overlay.querySelector( '.external' ).addEventListener( 'click', function( event ) { + closeOverlay(); + }, false ); + + setTimeout( function() { + dom.overlay.classList.add( 'visible' ); + }, 1 ); + + } + + /** + * Opens a overlay window with help material. + */ + function showHelp() { + + if( config.help ) { + + closeOverlay(); + + dom.overlay = document.createElement( 'div' ); + dom.overlay.classList.add( 'overlay' ); + dom.overlay.classList.add( 'overlay-help' ); + dom.wrapper.appendChild( dom.overlay ); + + var html = '

Keyboard Shortcuts


'; + + html += ''; + for( var key in keyboardShortcuts ) { + html += ''; + } + + html += '
KEYACTION
' + key + '' + keyboardShortcuts[ key ] + '
'; + + dom.overlay.innerHTML = [ + '
', + '', + '
', + '
', + '
'+ html +'
', + '
' + ].join(''); + + dom.overlay.querySelector( '.close' ).addEventListener( 'click', function( event ) { + closeOverlay(); + event.preventDefault(); + }, false ); + + setTimeout( function() { + dom.overlay.classList.add( 'visible' ); + }, 1 ); + + } + + } + + /** + * Closes any currently open overlay. + */ + function closeOverlay() { + + if( dom.overlay ) { + dom.overlay.parentNode.removeChild( dom.overlay ); + dom.overlay = null; + } + + } + + /** + * Applies JavaScript-controlled layout rules to the + * presentation. + */ + function layout() { + + if( dom.wrapper && !isPrintingPDF() ) { + + var size = getComputedSlideSize(); + + var slidePadding = 20; // TODO Dig this out of DOM + + // Layout the contents of the slides + layoutSlideContents( config.width, config.height, slidePadding ); + + dom.slides.style.width = size.width + 'px'; + dom.slides.style.height = size.height + 'px'; + + // Determine scale of content to fit within available space + scale = Math.min( size.presentationWidth / size.width, size.presentationHeight / size.height ); + + // Respect max/min scale settings + scale = Math.max( scale, config.minScale ); + scale = Math.min( scale, config.maxScale ); + + // Don't apply any scaling styles if scale is 1 + if( scale === 1 ) { + dom.slides.style.zoom = ''; + dom.slides.style.left = ''; + dom.slides.style.top = ''; + dom.slides.style.bottom = ''; + dom.slides.style.right = ''; + transformSlides( { layout: '' } ); + } + else { + // Use zoom to scale up in desktop Chrome so that content + // remains crisp. We don't use zoom to scale down since that + // can lead to shifts in text layout/line breaks. + if( scale > 1 && !isMobileDevice && /chrome/i.test( navigator.userAgent ) && typeof dom.slides.style.zoom !== 'undefined' ) { + dom.slides.style.zoom = scale; + dom.slides.style.left = ''; + dom.slides.style.top = ''; + dom.slides.style.bottom = ''; + dom.slides.style.right = ''; + transformSlides( { layout: '' } ); + } + // Apply scale transform as a fallback + else { + dom.slides.style.zoom = ''; + dom.slides.style.left = '50%'; + dom.slides.style.top = '50%'; + dom.slides.style.bottom = 'auto'; + dom.slides.style.right = 'auto'; + transformSlides( { layout: 'translate(-50%, -50%) scale('+ scale +')' } ); + } + } + + // Select all slides, vertical and horizontal + var slides = toArray( dom.wrapper.querySelectorAll( SLIDES_SELECTOR ) ); + + for( var i = 0, len = slides.length; i < len; i++ ) { + var slide = slides[ i ]; + + // Don't bother updating invisible slides + if( slide.style.display === 'none' ) { + continue; + } + + if( config.center || slide.classList.contains( '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( ( ( size.height - getAbsoluteHeight( slide ) ) / 2 ) - slidePadding, 0 ) + 'px'; + } + } + else { + slide.style.top = ''; + } + + } + + updateProgress(); + updateParallax(); + + } + + } + + /** + * Applies layout logic to the contents of all slides in + * the presentation. + */ + function layoutSlideContents( width, height, padding ) { + + // Handle sizing of elements with the 'stretch' class + toArray( dom.slides.querySelectorAll( 'section > .stretch' ) ).forEach( function( element ) { + + // Determine how much vertical space we can use + var remainingHeight = getRemainingHeight( element, height ); + + // Consider the aspect ratio of media elements + if( /(img|video)/gi.test( element.nodeName ) ) { + var nw = element.naturalWidth || element.videoWidth, + nh = element.naturalHeight || element.videoHeight; + + var es = Math.min( width / nw, remainingHeight / nh ); + + element.style.width = ( nw * es ) + 'px'; + element.style.height = ( nh * es ) + 'px'; + + } + else { + element.style.width = width + 'px'; + element.style.height = remainingHeight + 'px'; + } + + } ); + + } + + /** + * Calculates the computed pixel size of our slides. These + * values are based on the width and height configuration + * options. + */ + function getComputedSlideSize( presentationWidth, presentationHeight ) { + + var size = { + // Slide size + width: config.width, + height: config.height, + + // Presentation size + presentationWidth: presentationWidth || dom.wrapper.offsetWidth, + presentationHeight: presentationHeight || dom.wrapper.offsetHeight + }; + + // Reduce available space by margin + size.presentationWidth -= ( size.presentationWidth * config.margin ); + size.presentationHeight -= ( size.presentationHeight * config.margin ); + + // Slide width may be a percentage of available width + if( typeof size.width === 'string' && /%$/.test( size.width ) ) { + size.width = parseInt( size.width, 10 ) / 100 * size.presentationWidth; + } + + // Slide height may be a percentage of available height + if( typeof size.height === 'string' && /%$/.test( size.height ) ) { + size.height = parseInt( size.height, 10 ) / 100 * size.presentationHeight; + } + + return size; + + } + + /** + * 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( typeof stack === 'object' && typeof stack.setAttribute === 'function' ) { + stack.setAttribute( 'data-previous-indexv', v || 0 ); + } + + } + + /** + * 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( typeof stack === 'object' && typeof stack.setAttribute === 'function' && stack.classList.contains( 'stack' ) ) { + // Prefer manually defined start-indexv + var attributeName = stack.hasAttribute( 'data-start-indexv' ) ? 'data-start-indexv' : 'data-previous-indexv'; + + return parseInt( stack.getAttribute( attributeName ) || 0, 10 ); + } + + return 0; + + } + + /** + * Displays the overview of slides (quick nav) by scaling + * down and arranging all slide elements. + */ + function activateOverview() { + + // Only proceed if enabled in config + if( config.overview && !isOverview() ) { + + overview = true; + + dom.wrapper.classList.add( 'overview' ); + dom.wrapper.classList.remove( 'overview-deactivating' ); + + if( features.overviewTransitions ) { + setTimeout( function() { + dom.wrapper.classList.add( 'overview-animated' ); + }, 1 ); + } + + // Don't auto-slide while in overview mode + cancelAutoSlide(); + + // Move the backgrounds element into the slide container to + // that the same scaling is applied + dom.slides.appendChild( dom.background ); + + // Clicking on an overview slide navigates to it + toArray( dom.wrapper.querySelectorAll( SLIDES_SELECTOR ) ).forEach( function( slide ) { + if( !slide.classList.contains( 'stack' ) ) { + slide.addEventListener( 'click', onOverviewSlideClicked, true ); + } + } ); + + updateSlidesVisibility(); + layoutOverview(); + updateOverview(); + + layout(); + + // Notify observers of the overview showing + dispatchEvent( 'overviewshown', { + 'indexh': indexh, + 'indexv': indexv, + 'currentSlide': currentSlide + } ); + + } + + } + + /** + * Uses CSS transforms to position all slides in a grid for + * display inside of the overview mode. + */ + function layoutOverview() { + + var margin = 70; + var slideWidth = config.width + margin, + slideHeight = config.height + margin; + + // Reverse in RTL mode + if( config.rtl ) { + slideWidth = -slideWidth; + } + + // Layout slides + toArray( dom.wrapper.querySelectorAll( HORIZONTAL_SLIDES_SELECTOR ) ).forEach( function( hslide, h ) { + hslide.setAttribute( 'data-index-h', h ); + transformElement( hslide, 'translate3d(' + ( h * slideWidth ) + 'px, 0, 0)' ); + + if( hslide.classList.contains( 'stack' ) ) { + + toArray( hslide.querySelectorAll( 'section' ) ).forEach( function( vslide, v ) { + vslide.setAttribute( 'data-index-h', h ); + vslide.setAttribute( 'data-index-v', v ); + + transformElement( vslide, 'translate3d(0, ' + ( v * slideHeight ) + 'px, 0)' ); + } ); + + } + } ); + + // Layout slide backgrounds + toArray( dom.background.childNodes ).forEach( function( hbackground, h ) { + transformElement( hbackground, 'translate3d(' + ( h * slideWidth ) + 'px, 0, 0)' ); + + toArray( hbackground.querySelectorAll( '.slide-background' ) ).forEach( function( vbackground, v ) { + transformElement( vbackground, 'translate3d(0, ' + ( v * slideHeight ) + 'px, 0)' ); + } ); + } ); + + } + + /** + * Moves the overview viewport to the current slides. + * Called each time the current slide changes. + */ + function updateOverview() { + + var margin = 70; + var slideWidth = config.width + margin, + slideHeight = config.height + margin; + + // Reverse in RTL mode + if( config.rtl ) { + slideWidth = -slideWidth; + } + + transformSlides( { + overview: [ + 'translateX('+ ( -indexh * slideWidth ) +'px)', + 'translateY('+ ( -indexv * slideHeight ) +'px)', + 'translateZ('+ ( window.innerWidth < 400 ? -1000 : -2500 ) +'px)' + ].join( ' ' ) + } ); + + } + + /** + * Exits the slide overview and enters the currently + * active slide. + */ + function deactivateOverview() { + + // Only proceed if enabled in config + if( config.overview ) { + + overview = false; + + dom.wrapper.classList.remove( 'overview' ); + dom.wrapper.classList.remove( 'overview-animated' ); + + // 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( 'overview-deactivating' ); + + setTimeout( function () { + dom.wrapper.classList.remove( 'overview-deactivating' ); + }, 1 ); + + // Move the background element back out + dom.wrapper.appendChild( dom.background ); + + // Clean up changes made to slides + toArray( dom.wrapper.querySelectorAll( SLIDES_SELECTOR ) ).forEach( function( slide ) { + transformElement( slide, '' ); + + slide.removeEventListener( 'click', onOverviewSlideClicked, true ); + } ); + + // Clean up changes made to backgrounds + toArray( dom.background.querySelectorAll( '.slide-background' ) ).forEach( function( background ) { + transformElement( background, '' ); + } ); + + transformSlides( { overview: '' } ); + + slide( indexh, indexv ); + + layout(); + + cueAutoSlide(); + + // Notify observers of the overview hiding + dispatchEvent( 'overviewhidden', { + 'indexh': indexh, + 'indexv': indexv, + 'currentSlide': currentSlide + } ); + + } + } + + /** + * 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 { + isOverview() ? deactivateOverview() : activateOverview(); + } + + } + + /** + * Checks if the overview is currently active. + * + * @return {Boolean} true if the overview is active, + * false otherwise + */ + function isOverview() { + + return overview; + + } + + /** + * Checks if the current or specified slide is vertical + * (nested within another slide). + * + * @param {HTMLElement} slide [optional] The slide to check + * orientation of + */ + function isVerticalSlide( slide ) { + + // Prefer slide argument, otherwise use current slide + slide = slide ? slide : currentSlide; + + return slide && slide.parentNode && !!slide.parentNode.nodeName.match( /section/i ); + + } + + /** + * 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.webkitRequestFullScreen || + element.mozRequestFullScreen || + element.msRequestFullscreen; + + if( requestMethod ) { + requestMethod.apply( element ); + } + + } + + /** + * Enters the paused mode which fades everything on screen to + * black. + */ + function pause() { + + if( config.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( override ) { + + if( typeof override === 'boolean' ) { + override ? pause() : resume(); + } + else { + isPaused() ? resume() : pause(); + } + + } + + /** + * Checks if we are currently in the paused mode. + */ + function isPaused() { + + return dom.wrapper.classList.contains( 'paused' ); + + } + + /** + * Toggles the auto slide mode on and off. + * + * @param {Boolean} override Optional flag which sets the desired state. + * True means autoplay starts, false means it stops. + */ + + function toggleAutoSlide( override ) { + + if( typeof override === 'boolean' ) { + override ? resumeAutoSlide() : pauseAutoSlide(); + } + + else { + autoSlidePaused ? resumeAutoSlide() : pauseAutoSlide(); + } + + } + + /** + * Checks if the auto slide mode is currently on. + */ + function isAutoSliding() { + + return !!( autoSlide && !autoSlidePaused ); + + } + + /** + * 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 + * @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, o ) { + + // Remember where we were at before + previousSlide = currentSlide; + + // Query all horizontal slides in the deck + var horizontalSlides = dom.wrapper.querySelectorAll( HORIZONTAL_SLIDES_SELECTOR ); + + // If no vertical index is specified and the upcoming slide is a + // stack, resume at its previous vertical index + if( v === undefined && !isOverview() ) { + v = getPreviousVerticalIndex( horizontalSlides[ h ] ); + } + + // 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 ); + } + + // Remember the state before this slide + var stateBefore = state.concat(); + + // Reset the state array + state.length = 0; + + var indexhBefore = indexh || 0, + indexvBefore = indexv || 0; + + // 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 ); + + // Update the visibility of slides now that the indices have changed + updateSlidesVisibility(); + + layout(); + + // 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 remains of the previous state + while( stateBefore.length ) { + document.documentElement.classList.remove( stateBefore.pop() ); + } + + // Update the overview if it's currently active + if( isOverview() ) { + updateOverview(); + } + + // 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; + + // Show fragment, if specified + if( typeof f !== 'undefined' ) { + navigateFragment( f ); + } + + // Dispatch an event if the slide changed + var slideChanged = ( indexh !== indexhBefore || indexv !== indexvBefore ); + if( slideChanged ) { + dispatchEvent( 'slidechanged', { + 'indexh': indexh, + 'indexv': indexv, + 'previousSlide': previousSlide, + 'currentSlide': currentSlide, + 'origin': o + } ); + } + 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' ); + previousSlide.setAttribute( 'aria-hidden', 'true' ); + + // Reset all slides upon navigate to home + // Issue: #285 + if ( dom.wrapper.querySelector( HOME_SLIDE_SELECTOR ).classList.contains( 'present' ) ) { + // Launch async task + setTimeout( function () { + var slides = toArray( dom.wrapper.querySelectorAll( HORIZONTAL_SLIDES_SELECTOR + '.stack') ), i; + for( i in slides ) { + if( slides[i] ) { + // Reset stack + setPreviousVerticalIndex( slides[i], 0 ); + } + } + }, 0 ); + } + } + + // Handle embedded content + if( slideChanged || !previousSlide ) { + stopEmbeddedContent( previousSlide ); + startEmbeddedContent( currentSlide ); + } + + // Announce the current slide contents, for screen readers + dom.statusDiv.textContent = currentSlide.textContent; + + updateControls(); + updateProgress(); + updateBackground(); + updateParallax(); + updateSlideNumber(); + updateNotes(); + + // Update the URL hash + writeURL(); + + cueAutoSlide(); + + } + + /** + * Syncs the presentation with the current DOM. Useful + * when new slides or control elements are added or when + * the configuration has changed. + */ + function sync() { + + // 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(); + + // Re-create the slide backgrounds + createBackgrounds(); + + // Write the current hash to the URL + writeURL(); + + sortAllFragments(); + + updateControls(); + updateProgress(); + updateBackground( true ); + updateSlideNumber(); + updateSlidesVisibility(); + updateNotes(); + + formatEmbeddedContent(); + startEmbeddedContent( currentSlide ); + + if( isOverview() ) { + layoutOverview(); + } + + } + + /** + * Resets all vertical slides so that only the first + * is visible. + */ + function resetVerticalSlides() { + + var horizontalSlides = toArray( dom.wrapper.querySelectorAll( HORIZONTAL_SLIDES_SELECTOR ) ); + horizontalSlides.forEach( function( horizontalSlide ) { + + var verticalSlides = toArray( horizontalSlide.querySelectorAll( 'section' ) ); + verticalSlides.forEach( function( verticalSlide, y ) { + + if( y > 0 ) { + verticalSlide.classList.remove( 'present' ); + verticalSlide.classList.remove( 'past' ); + verticalSlide.classList.add( 'future' ); + verticalSlide.setAttribute( 'aria-hidden', 'true' ); + } + + } ); + + } ); + + } + + /** + * Sorts and formats all of fragments in the + * presentation. + */ + function sortAllFragments() { + + var horizontalSlides = toArray( dom.wrapper.querySelectorAll( HORIZONTAL_SLIDES_SELECTOR ) ); + horizontalSlides.forEach( function( horizontalSlide ) { + + var verticalSlides = toArray( horizontalSlide.querySelectorAll( 'section' ) ); + verticalSlides.forEach( function( verticalSlide, y ) { + + sortFragments( verticalSlide.querySelectorAll( '.fragment' ) ); + + } ); + + if( verticalSlides.length === 0 ) sortFragments( horizontalSlide.querySelectorAll( '.fragment' ) ); + + } ); + + } + + /** + * 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 = toArray( dom.wrapper.querySelectorAll( selector ) ), + slidesLength = slides.length; + + var printMode = isPrintingPDF(); + + 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]; + + var reverse = config.rtl && !isVerticalSlide( element ); + + element.classList.remove( 'past' ); + element.classList.remove( 'present' ); + element.classList.remove( 'future' ); + + // http://www.w3.org/html/wg/drafts/html/master/editing.html#the-hidden-attribute + element.setAttribute( 'hidden', '' ); + element.setAttribute( 'aria-hidden', 'true' ); + + // If this element contains vertical slides + if( element.querySelector( 'section' ) ) { + element.classList.add( 'stack' ); + } + + // If we're printing static slides, all slides are "present" + if( printMode ) { + element.classList.add( 'present' ); + continue; + } + + if( i < index ) { + // Any element previous to index is given the 'past' class + element.classList.add( reverse ? 'future' : 'past' ); + + if( config.fragments ) { + var pastFragments = toArray( element.querySelectorAll( '.fragment' ) ); + + // Show all fragments on prior slides + while( pastFragments.length ) { + var pastFragment = pastFragments.pop(); + pastFragment.classList.add( 'visible' ); + pastFragment.classList.remove( 'current-fragment' ); + } + } + } + else if( i > index ) { + // Any element subsequent to index is given the 'future' class + element.classList.add( reverse ? 'past' : 'future' ); + + if( config.fragments ) { + var futureFragments = toArray( element.querySelectorAll( '.fragment.visible' ) ); + + // No fragments in future slides should be visible ahead of time + while( futureFragments.length ) { + var futureFragment = futureFragments.pop(); + futureFragment.classList.remove( 'visible' ); + futureFragment.classList.remove( 'current-fragment' ); + } + } + } + } + + // Mark the current slide as present + slides[index].classList.add( 'present' ); + slides[index].removeAttribute( 'hidden' ); + slides[index].removeAttribute( 'aria-hidden' ); + + // If this slide has a state associated with it, add it + // onto the current state of the deck + var slideState = slides[index].getAttribute( 'data-state' ); + if( slideState ) { + state = state.concat( slideState.split( ' ' ) ); + } + + } + else { + // Since there are no slides we can't be anywhere beyond the + // zeroth index + index = 0; + } + + return index; + + } + + /** + * Optimization method; hide all slides that are far away + * from the present slide. + */ + function updateSlidesVisibility() { + + // Select all slides and convert the NodeList result to + // an array + var horizontalSlides = toArray( dom.wrapper.querySelectorAll( HORIZONTAL_SLIDES_SELECTOR ) ), + horizontalSlidesLength = horizontalSlides.length, + distanceX, + distanceY; + + if( horizontalSlidesLength && typeof indexh !== 'undefined' ) { + + // The number of steps away from the present slide that will + // be visible + var viewDistance = isOverview() ? 10 : config.viewDistance; + + // Limit view distance on weaker devices + if( isMobileDevice ) { + viewDistance = isOverview() ? 6 : 2; + } + + // All slides need to be visible when exporting to PDF + if( isPrintingPDF() ) { + viewDistance = Number.MAX_VALUE; + } + + for( var x = 0; x < horizontalSlidesLength; x++ ) { + var horizontalSlide = horizontalSlides[x]; + + var verticalSlides = toArray( horizontalSlide.querySelectorAll( 'section' ) ), + verticalSlidesLength = verticalSlides.length; + + // Determine how far away this slide is from the present + distanceX = Math.abs( ( indexh || 0 ) - x ) || 0; + + // If the presentation is looped, distance should measure + // 1 between the first and last slides + if( config.loop ) { + distanceX = Math.abs( ( ( indexh || 0 ) - x ) % ( horizontalSlidesLength - viewDistance ) ) || 0; + } + + // Show the horizontal slide if it's within the view distance + if( distanceX < viewDistance ) { + showSlide( horizontalSlide ); + } + else { + hideSlide( horizontalSlide ); + } + + if( verticalSlidesLength ) { + + var oy = getPreviousVerticalIndex( horizontalSlide ); + + for( var y = 0; y < verticalSlidesLength; y++ ) { + var verticalSlide = verticalSlides[y]; + + distanceY = x === ( indexh || 0 ) ? Math.abs( ( indexv || 0 ) - y ) : Math.abs( y - oy ); + + if( distanceX + distanceY < viewDistance ) { + showSlide( verticalSlide ); + } + else { + hideSlide( verticalSlide ); + } + } + + } + } + + } + + } + + /** + * Pick up notes from the current slide and display tham + * to the viewer. + * + * @see `showNotes` config value + */ + function updateNotes() { + + if( config.showNotes && dom.speakerNotes && currentSlide && !isPrintingPDF() ) { + + dom.speakerNotes.innerHTML = getSlideNotes() || ''; + + } + + } + + /** + * Updates the progress bar to reflect the current slide. + */ + function updateProgress() { + + // Update progress if enabled + if( config.progress && dom.progressbar ) { + + dom.progressbar.style.width = getProgress() * dom.wrapper.offsetWidth + 'px'; + + } + + } + + /** + * Updates the slide number div to reflect the current slide. + * + * The following slide number formats are available: + * "h.v": horizontal . vertical slide number (default) + * "h/v": horizontal / vertical slide number + * "c": flattened slide number + * "c/t": flattened slide number / total slides + */ + function updateSlideNumber() { + + // Update slide number if enabled + if( config.slideNumber && dom.slideNumber ) { + + var value = []; + var format = 'h.v'; + + // Check if a custom number format is available + if( typeof config.slideNumber === 'string' ) { + format = config.slideNumber; + } + + switch( format ) { + case 'c': + value.push( getSlidePastCount() + 1 ); + break; + case 'c/t': + value.push( getSlidePastCount() + 1, '/', getTotalSlides() ); + break; + case 'h/v': + value.push( indexh + 1 ); + if( isVerticalSlide() ) value.push( '/', indexv + 1 ); + break; + default: + value.push( indexh + 1 ); + if( isVerticalSlide() ) value.push( '.', indexv + 1 ); + } + + dom.slideNumber.innerHTML = formatSlideNumber( value[0], value[1], value[2] ); + } + + } + + /** + * Applies HTML formatting to a slide number before it's + * written to the DOM. + */ + function formatSlideNumber( a, delimiter, b ) { + + if( typeof b === 'number' && !isNaN( b ) ) { + return ''+ a +'' + + ''+ delimiter +'' + + ''+ b +''; + } + else { + return ''+ a +''; + } + + } + + /** + * Updates the state of all control/navigation arrows. + */ + function updateControls() { + + var routes = availableRoutes(); + var fragments = availableFragments(); + + // Remove the 'enabled' class from all directions + dom.controlsLeft.concat( dom.controlsRight ) + .concat( dom.controlsUp ) + .concat( dom.controlsDown ) + .concat( dom.controlsPrev ) + .concat( dom.controlsNext ).forEach( function( node ) { + node.classList.remove( 'enabled' ); + node.classList.remove( 'fragmented' ); + } ); + + // Add the 'enabled' class to the available routes + if( routes.left ) dom.controlsLeft.forEach( function( el ) { el.classList.add( 'enabled' ); } ); + if( routes.right ) dom.controlsRight.forEach( function( el ) { el.classList.add( 'enabled' ); } ); + if( routes.up ) dom.controlsUp.forEach( function( el ) { el.classList.add( 'enabled' ); } ); + if( routes.down ) dom.controlsDown.forEach( function( el ) { el.classList.add( 'enabled' ); } ); + + // Prev/next buttons + if( routes.left || routes.up ) dom.controlsPrev.forEach( function( el ) { el.classList.add( 'enabled' ); } ); + if( routes.right || routes.down ) dom.controlsNext.forEach( function( el ) { el.classList.add( 'enabled' ); } ); + + // Highlight fragment directions + if( currentSlide ) { + + // Always apply fragment decorator to prev/next buttons + if( fragments.prev ) dom.controlsPrev.forEach( function( el ) { el.classList.add( 'fragmented', 'enabled' ); } ); + if( fragments.next ) dom.controlsNext.forEach( function( el ) { el.classList.add( 'fragmented', 'enabled' ); } ); + + // Apply fragment decorators to directional buttons based on + // what slide axis they are in + if( isVerticalSlide( currentSlide ) ) { + if( fragments.prev ) dom.controlsUp.forEach( function( el ) { el.classList.add( 'fragmented', 'enabled' ); } ); + if( fragments.next ) dom.controlsDown.forEach( function( el ) { el.classList.add( 'fragmented', 'enabled' ); } ); + } + else { + if( fragments.prev ) dom.controlsLeft.forEach( function( el ) { el.classList.add( 'fragmented', 'enabled' ); } ); + if( fragments.next ) dom.controlsRight.forEach( function( el ) { el.classList.add( 'fragmented', 'enabled' ); } ); + } + + } + + } + + /** + * Updates the background elements to reflect the current + * slide. + * + * @param {Boolean} includeAll If true, the backgrounds of + * all vertical slides (not just the present) will be updated. + */ + function updateBackground( includeAll ) { + + var currentBackground = null; + + // Reverse past/future classes when in RTL mode + var horizontalPast = config.rtl ? 'future' : 'past', + horizontalFuture = config.rtl ? 'past' : 'future'; + + // Update the classes of all backgrounds to match the + // states of their slides (past/present/future) + toArray( dom.background.childNodes ).forEach( function( backgroundh, h ) { + + backgroundh.classList.remove( 'past' ); + backgroundh.classList.remove( 'present' ); + backgroundh.classList.remove( 'future' ); + + if( h < indexh ) { + backgroundh.classList.add( horizontalPast ); + } + else if ( h > indexh ) { + backgroundh.classList.add( horizontalFuture ); + } + else { + backgroundh.classList.add( 'present' ); + + // Store a reference to the current background element + currentBackground = backgroundh; + } + + if( includeAll || h === indexh ) { + toArray( backgroundh.querySelectorAll( '.slide-background' ) ).forEach( function( backgroundv, v ) { + + backgroundv.classList.remove( 'past' ); + backgroundv.classList.remove( 'present' ); + backgroundv.classList.remove( 'future' ); + + if( v < indexv ) { + backgroundv.classList.add( 'past' ); + } + else if ( v > indexv ) { + backgroundv.classList.add( 'future' ); + } + else { + backgroundv.classList.add( 'present' ); + + // Only if this is the present horizontal and vertical slide + if( h === indexh ) currentBackground = backgroundv; + } + + } ); + } + + } ); + + // Stop any currently playing video background + if( previousBackground ) { + + var previousVideo = previousBackground.querySelector( 'video' ); + if( previousVideo ) previousVideo.pause(); + + } + + if( currentBackground ) { + + // Start video playback + var currentVideo = currentBackground.querySelector( 'video' ); + if( currentVideo ) { + if( currentVideo.currentTime > 0 ) currentVideo.currentTime = 0; + currentVideo.play(); + } + + var backgroundImageURL = currentBackground.style.backgroundImage || ''; + + // Restart GIFs (doesn't work in Firefox) + if( /\.gif/i.test( backgroundImageURL ) ) { + currentBackground.style.backgroundImage = ''; + window.getComputedStyle( currentBackground ).opacity; + currentBackground.style.backgroundImage = backgroundImageURL; + } + + // Don't transition between identical backgrounds. This + // prevents unwanted flicker. + var previousBackgroundHash = previousBackground ? previousBackground.getAttribute( 'data-background-hash' ) : null; + var currentBackgroundHash = currentBackground.getAttribute( 'data-background-hash' ); + if( currentBackgroundHash && currentBackgroundHash === previousBackgroundHash && currentBackground !== previousBackground ) { + dom.background.classList.add( 'no-transition' ); + } + + previousBackground = currentBackground; + + } + + // If there's a background brightness flag for this slide, + // bubble it to the .reveal container + if( currentSlide ) { + [ 'has-light-background', 'has-dark-background' ].forEach( function( classToBubble ) { + if( currentSlide.classList.contains( classToBubble ) ) { + dom.wrapper.classList.add( classToBubble ); + } + else { + dom.wrapper.classList.remove( classToBubble ); + } + } ); + } + + // Allow the first background to apply without transition + setTimeout( function() { + dom.background.classList.remove( 'no-transition' ); + }, 1 ); + + } + + /** + * Updates the position of the parallax background based + * on the current slide index. + */ + function updateParallax() { + + if( config.parallaxBackgroundImage ) { + + var horizontalSlides = dom.wrapper.querySelectorAll( HORIZONTAL_SLIDES_SELECTOR ), + verticalSlides = dom.wrapper.querySelectorAll( VERTICAL_SLIDES_SELECTOR ); + + var backgroundSize = dom.background.style.backgroundSize.split( ' ' ), + backgroundWidth, backgroundHeight; + + if( backgroundSize.length === 1 ) { + backgroundWidth = backgroundHeight = parseInt( backgroundSize[0], 10 ); + } + else { + backgroundWidth = parseInt( backgroundSize[0], 10 ); + backgroundHeight = parseInt( backgroundSize[1], 10 ); + } + + var slideWidth = dom.background.offsetWidth, + horizontalSlideCount = horizontalSlides.length, + horizontalOffsetMultiplier, + horizontalOffset; + + if( typeof config.parallaxBackgroundHorizontal === 'number' ) { + horizontalOffsetMultiplier = config.parallaxBackgroundHorizontal; + } + else { + horizontalOffsetMultiplier = horizontalSlideCount > 1 ? ( backgroundWidth - slideWidth ) / ( horizontalSlideCount-1 ) : 0; + } + + horizontalOffset = horizontalOffsetMultiplier * indexh * -1; + + var slideHeight = dom.background.offsetHeight, + verticalSlideCount = verticalSlides.length, + verticalOffsetMultiplier, + verticalOffset; + + if( typeof config.parallaxBackgroundVertical === 'number' ) { + verticalOffsetMultiplier = config.parallaxBackgroundVertical; + } + else { + verticalOffsetMultiplier = ( backgroundHeight - slideHeight ) / ( verticalSlideCount-1 ); + } + + verticalOffset = verticalSlideCount > 0 ? verticalOffsetMultiplier * indexv * 1 : 0; + + dom.background.style.backgroundPosition = horizontalOffset + 'px ' + -verticalOffset + 'px'; + + } + + } + + /** + * Called when the given slide is within the configured view + * distance. Shows the slide element and loads any content + * that is set to load lazily (data-src). + */ + function showSlide( slide ) { + + // Show the slide element + slide.style.display = 'block'; + + // Media elements with data-src attributes + toArray( slide.querySelectorAll( 'img[data-src], video[data-src], audio[data-src]' ) ).forEach( function( element ) { + element.setAttribute( 'src', element.getAttribute( 'data-src' ) ); + element.removeAttribute( 'data-src' ); + } ); + + // Media elements with children + toArray( slide.querySelectorAll( 'video, audio' ) ).forEach( function( media ) { + var sources = 0; + + toArray( media.querySelectorAll( 'source[data-src]' ) ).forEach( function( source ) { + source.setAttribute( 'src', source.getAttribute( 'data-src' ) ); + source.removeAttribute( 'data-src' ); + sources += 1; + } ); + + // If we rewrote sources for this video/audio element, we need + // to manually tell it to load from its new origin + if( sources > 0 ) { + media.load(); + } + } ); + + + // Show the corresponding background element + var indices = getIndices( slide ); + var background = getSlideBackground( indices.h, indices.v ); + if( background ) { + background.style.display = 'block'; + + // If the background contains media, load it + if( background.hasAttribute( 'data-loaded' ) === false ) { + background.setAttribute( 'data-loaded', 'true' ); + + var backgroundImage = slide.getAttribute( 'data-background-image' ), + backgroundVideo = slide.getAttribute( 'data-background-video' ), + backgroundVideoLoop = slide.hasAttribute( 'data-background-video-loop' ), + backgroundIframe = slide.getAttribute( 'data-background-iframe' ); + + // Images + if( backgroundImage ) { + background.style.backgroundImage = 'url('+ backgroundImage +')'; + } + // Videos + else if ( backgroundVideo && !isSpeakerNotes() ) { + var video = document.createElement( 'video' ); + + if( backgroundVideoLoop ) { + video.setAttribute( 'loop', '' ); + } + + // Support comma separated lists of video sources + backgroundVideo.split( ',' ).forEach( function( source ) { + video.innerHTML += ''; + } ); + + background.appendChild( video ); + } + // Iframes + else if( backgroundIframe ) { + var iframe = document.createElement( 'iframe' ); + iframe.setAttribute( 'src', backgroundIframe ); + iframe.style.width = '100%'; + iframe.style.height = '100%'; + iframe.style.maxHeight = '100%'; + iframe.style.maxWidth = '100%'; + + background.appendChild( iframe ); + } + } + } + + } + + /** + * Called when the given slide is moved outside of the + * configured view distance. + */ + function hideSlide( slide ) { + + // Hide the slide element + slide.style.display = 'none'; + + // Hide the corresponding background element + var indices = getIndices( slide ); + var background = getSlideBackground( indices.h, indices.v ); + if( background ) { + background.style.display = 'none'; + } + + } + + /** + * Determine what available routes there are for navigation. + * + * @return {Object} containing four booleans: left/right/up/down + */ + function availableRoutes() { + + var horizontalSlides = dom.wrapper.querySelectorAll( HORIZONTAL_SLIDES_SELECTOR ), + verticalSlides = dom.wrapper.querySelectorAll( VERTICAL_SLIDES_SELECTOR ); + + var routes = { + left: indexh > 0 || config.loop, + right: indexh < horizontalSlides.length - 1 || config.loop, + up: indexv > 0, + down: indexv < verticalSlides.length - 1 + }; + + // reverse horizontal controls for rtl + if( config.rtl ) { + var left = routes.left; + routes.left = routes.right; + routes.right = left; + } + + return routes; + + } + + /** + * Returns an object describing the available fragment + * directions. + * + * @return {Object} two boolean properties: prev/next + */ + function availableFragments() { + + if( currentSlide && config.fragments ) { + var fragments = currentSlide.querySelectorAll( '.fragment' ); + var hiddenFragments = currentSlide.querySelectorAll( '.fragment:not(.visible)' ); + + return { + prev: fragments.length - hiddenFragments.length > 0, + next: !!hiddenFragments.length + }; + } + else { + return { prev: false, next: false }; + } + + } + + /** + * Enforces origin-specific format rules for embedded media. + */ + function formatEmbeddedContent() { + + var _appendParamToIframeSource = function( sourceAttribute, sourceURL, param ) { + toArray( dom.slides.querySelectorAll( 'iframe['+ sourceAttribute +'*="'+ sourceURL +'"]' ) ).forEach( function( el ) { + var src = el.getAttribute( sourceAttribute ); + if( src && src.indexOf( param ) === -1 ) { + el.setAttribute( sourceAttribute, src + ( !/\?/.test( src ) ? '?' : '&' ) + param ); + } + }); + }; + + // YouTube frames must include "?enablejsapi=1" + _appendParamToIframeSource( 'src', 'youtube.com/embed/', 'enablejsapi=1' ); + _appendParamToIframeSource( 'data-src', 'youtube.com/embed/', 'enablejsapi=1' ); + + // Vimeo frames must include "?api=1" + _appendParamToIframeSource( 'src', 'player.vimeo.com/', 'api=1' ); + _appendParamToIframeSource( 'data-src', 'player.vimeo.com/', 'api=1' ); + + } + + /** + * Start playback of any embedded content inside of + * the targeted slide. + */ + function startEmbeddedContent( slide ) { + + if( slide && !isSpeakerNotes() ) { + // Restart GIFs + toArray( slide.querySelectorAll( 'img[src$=".gif"]' ) ).forEach( function( el ) { + // Setting the same unchanged source like this was confirmed + // to work in Chrome, FF & Safari + el.setAttribute( 'src', el.getAttribute( 'src' ) ); + } ); + + // HTML5 media elements + toArray( slide.querySelectorAll( 'video, audio' ) ).forEach( function( el ) { + if( el.hasAttribute( 'data-autoplay' ) && typeof el.play === 'function' ) { + el.play(); + } + } ); + + // Normal iframes + toArray( slide.querySelectorAll( 'iframe[src]' ) ).forEach( function( el ) { + startEmbeddedIframe( { target: el } ); + } ); + + // Lazy loading iframes + toArray( slide.querySelectorAll( 'iframe[data-src]' ) ).forEach( function( el ) { + if( el.getAttribute( 'src' ) !== el.getAttribute( 'data-src' ) ) { + el.removeEventListener( 'load', startEmbeddedIframe ); // remove first to avoid dupes + el.addEventListener( 'load', startEmbeddedIframe ); + el.setAttribute( 'src', el.getAttribute( 'data-src' ) ); + } + } ); + } + + } + + /** + * "Starts" the content of an embedded iframe using the + * postmessage API. + */ + function startEmbeddedIframe( event ) { + + var iframe = event.target; + + // YouTube postMessage API + if( /youtube\.com\/embed\//.test( iframe.getAttribute( 'src' ) ) && iframe.hasAttribute( 'data-autoplay' ) ) { + iframe.contentWindow.postMessage( '{"event":"command","func":"playVideo","args":""}', '*' ); + } + // Vimeo postMessage API + else if( /player\.vimeo\.com\//.test( iframe.getAttribute( 'src' ) ) && iframe.hasAttribute( 'data-autoplay' ) ) { + iframe.contentWindow.postMessage( '{"method":"play"}', '*' ); + } + // Generic postMessage API + else { + iframe.contentWindow.postMessage( 'slide:start', '*' ); + } + + } + + /** + * Stop playback of any embedded content inside of + * the targeted slide. + */ + function stopEmbeddedContent( slide ) { + + if( slide && slide.parentNode ) { + // HTML5 media elements + toArray( slide.querySelectorAll( 'video, audio' ) ).forEach( function( el ) { + if( !el.hasAttribute( 'data-ignore' ) && typeof el.pause === 'function' ) { + el.pause(); + } + } ); + + // Generic postMessage API for non-lazy loaded iframes + toArray( slide.querySelectorAll( 'iframe' ) ).forEach( function( el ) { + el.contentWindow.postMessage( 'slide:stop', '*' ); + el.removeEventListener( 'load', startEmbeddedIframe ); + }); + + // YouTube postMessage API + toArray( slide.querySelectorAll( 'iframe[src*="youtube.com/embed/"]' ) ).forEach( function( el ) { + if( !el.hasAttribute( 'data-ignore' ) && typeof el.contentWindow.postMessage === 'function' ) { + el.contentWindow.postMessage( '{"event":"command","func":"pauseVideo","args":""}', '*' ); + } + }); + + // Vimeo postMessage API + toArray( slide.querySelectorAll( 'iframe[src*="player.vimeo.com/"]' ) ).forEach( function( el ) { + if( !el.hasAttribute( 'data-ignore' ) && typeof el.contentWindow.postMessage === 'function' ) { + el.contentWindow.postMessage( '{"method":"pause"}', '*' ); + } + }); + + // Lazy loading iframes + toArray( slide.querySelectorAll( 'iframe[data-src]' ) ).forEach( function( el ) { + // Only removing the src doesn't actually unload the frame + // in all browsers (Firefox) so we set it to blank first + el.setAttribute( 'src', 'about:blank' ); + el.removeAttribute( 'src' ); + } ); + } + + } + + /** + * Returns the number of past slides. This can be used as a global + * flattened index for slides. + */ + function getSlidePastCount() { + + var horizontalSlides = toArray( dom.wrapper.querySelectorAll( HORIZONTAL_SLIDES_SELECTOR ) ); + + // The number of past slides + var pastCount = 0; + + // Step through all slides and count the past ones + mainLoop: for( var i = 0; i < horizontalSlides.length; i++ ) { + + var horizontalSlide = horizontalSlides[i]; + var verticalSlides = toArray( horizontalSlide.querySelectorAll( 'section' ) ); + + for( var j = 0; j < verticalSlides.length; j++ ) { + + // Stop as soon as we arrive at the present + if( verticalSlides[j].classList.contains( 'present' ) ) { + break mainLoop; + } + + pastCount++; + + } + + // Stop as soon as we arrive at the present + if( horizontalSlide.classList.contains( 'present' ) ) { + break; + } + + // Don't count the wrapping section for vertical slides + if( horizontalSlide.classList.contains( 'stack' ) === false ) { + pastCount++; + } + + } + + return pastCount; + + } + + /** + * Returns a value ranging from 0-1 that represents + * how far into the presentation we have navigated. + */ + function getProgress() { + + // The number of past and total slides + var totalCount = getTotalSlides(); + var pastCount = getSlidePastCount(); + + if( currentSlide ) { + + var allFragments = currentSlide.querySelectorAll( '.fragment' ); + + // If there are fragments in the current slide those should be + // accounted for in the progress. + if( allFragments.length > 0 ) { + var visibleFragments = currentSlide.querySelectorAll( '.fragment.visible' ); + + // This value represents how big a portion of the slide progress + // that is made up by its fragments (0-1) + var fragmentWeight = 0.9; + + // Add fragment progress to the past slide count + pastCount += ( visibleFragments.length / allFragments.length ) * fragmentWeight; + } + + } + + return pastCount / ( totalCount - 1 ); + + } + + /** + * Checks if this presentation is running inside of the + * speaker notes window. + */ + function isSpeakerNotes() { + + return !!window.location.search.match( /receiver/gi ); + + } + + /** + * 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 ) { + var element; + + // Ensure the named link is a valid HTML ID attribute + if( /^[a-zA-Z][\w:.-]*$/.test( name ) ) { + // Find the slide with the specified ID + element = document.getElementById( 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 || 0, indexv || 0 ); + } + } + else { + // Read the index components of the hash + var h = parseInt( bits[0], 10 ) || 0, + v = parseInt( bits[1], 10 ) || 0; + + if( h !== indexh || v !== indexv ) { + slide( h, v ); + } + } + + } + + /** + * Updates the page URL (hash) to reflect the current + * state. + * + * @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 + clearTimeout( writeURLTimeout ); + + // If a delay is specified, timeout this call + if( typeof delay === 'number' ) { + writeURLTimeout = setTimeout( writeURL, delay ); + } + else if( currentSlide ) { + var url = '/'; + + // Attempt to create a named link based on the slide's ID + var id = currentSlide.getAttribute( 'id' ); + if( id ) { + id = id.replace( /[^a-zA-Z0-9\-\_\:\.]/g, '' ); + } + + // If the current slide has an ID, use that as a named link + if( typeof id === 'string' && id.length ) { + url = '/' + id; + } + // Otherwise use the /h/v index + else { + 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: , v: , f: } + */ + function getIndices( slide ) { + + // By default, return the current indices + var h = indexh, + v = indexv, + f; + + // If a slide is specified, return the indices of that slide + if( slide ) { + var isVertical = isVerticalSlide( slide ); + var slideh = isVertical ? slide.parentNode : slide; + + // Select all horizontal slides + var horizontalSlides = toArray( dom.wrapper.querySelectorAll( HORIZONTAL_SLIDES_SELECTOR ) ); + + // Now that we know which the horizontal slide is, get its index + h = Math.max( horizontalSlides.indexOf( slideh ), 0 ); + + // Assume we're not vertical + v = undefined; + + // If this is a vertical slide, grab the vertical index + if( isVertical ) { + v = Math.max( toArray( slide.parentNode.querySelectorAll( 'section' ) ).indexOf( slide ), 0 ); + } + } + + if( !slide && currentSlide ) { + var hasFragments = currentSlide.querySelectorAll( '.fragment' ).length > 0; + if( hasFragments ) { + var currentFragment = currentSlide.querySelector( '.current-fragment' ); + if( currentFragment && currentFragment.hasAttribute( 'data-fragment-index' ) ) { + f = parseInt( currentFragment.getAttribute( 'data-fragment-index' ), 10 ); + } + else { + f = currentSlide.querySelectorAll( '.fragment.visible' ).length - 1; + } + } + } + + return { h: h, v: v, f: f }; + + } + + /** + * Retrieves the total number of slides in this presentation. + */ + function getTotalSlides() { + + return dom.wrapper.querySelectorAll( SLIDES_SELECTOR + ':not(.stack)' ).length; + + } + + /** + * Returns the slide element matching the specified index. + */ + function getSlide( x, y ) { + + var horizontalSlide = dom.wrapper.querySelectorAll( HORIZONTAL_SLIDES_SELECTOR )[ x ]; + var verticalSlides = horizontalSlide && horizontalSlide.querySelectorAll( 'section' ); + + if( verticalSlides && verticalSlides.length && typeof y === 'number' ) { + return verticalSlides ? verticalSlides[ y ] : undefined; + } + + return horizontalSlide; + + } + + /** + * Returns the background element for the given slide. + * All slides, even the ones with no background properties + * defined, have a background element so as long as the + * index is valid an element will be returned. + */ + function getSlideBackground( x, y ) { + + // When printing to PDF the slide backgrounds are nested + // inside of the slides + if( isPrintingPDF() ) { + var slide = getSlide( x, y ); + if( slide ) { + var background = slide.querySelector( '.slide-background' ); + if( background && background.parentNode === slide ) { + return background; + } + } + + return undefined; + } + + var horizontalBackground = dom.wrapper.querySelectorAll( '.backgrounds>.slide-background' )[ x ]; + var verticalBackgrounds = horizontalBackground && horizontalBackground.querySelectorAll( '.slide-background' ); + + if( verticalBackgrounds && verticalBackgrounds.length && typeof y === 'number' ) { + return verticalBackgrounds ? verticalBackgrounds[ y ] : undefined; + } + + return horizontalBackground; + + } + + /** + * Retrieves the speaker notes from a slide. Notes can be + * defined in two ways: + * 1. As a data-notes attribute on the slide
+ * 2. As an