- slide_vertical_alignment = (attr? :revealjs_vertical_alignment) ? (attr :revealjs_vertical_alignment) : false
- browser_history = (attr? :revealjs_history) ? (attr :revealjs_history) : false
- display_slide_number = (attr? :revealjs_display_slide_number) ? (attr :revealjs_display_slide_number) : false
- transition = (attr? :revealjs_transition) ? (attr :revealjs_transition) : 'default'
doctype 5
html lang=(attr :lang, 'en' unless attr? :nolang)
  head
    meta charset="utf-8"
    - [:description, :keywords, :author, :copyright].each do |key|
      - if attr? key
        meta name=key content=(attr key)

    title=((doctitle :sanitize => true) || (attr 'untitled-label'))
    meta name="apple-mobile-web-app-capable" content="yes"
    meta name="apple-mobile-web-app-status-bar-style" content="black-translucent"
    meta name="viewport" content="width=device-width, initial-scale=1.0, maximum-scale=1.0, user-scalable=no" 

    link href="revealjs/css/reveal.min.css" rel="stylesheet"

    - if attr? :revealjs_theme
      link rel='stylesheet' href='revealjs/css/theme/#{attr :revealjs_theme}.css' id='theme'
    - elsif attr? :revealjs_customtheme
      link rel='stylesheet' href='#{attr :revealjs_customtheme}' id='theme'
    - else
      link rel='stylesheet' href='revealjs/css/theme/gpe.css' id='theme'

    - if attr? :icons, 'font'
      - if attr? 'iconfont-remote'
        link rel='stylesheet' href=(attr 'iconfont-cdn', 'http://maxcdn.bootstrapcdn.com/font-awesome/4.1.0/css/font-awesome.min.css')
      - else
        link rel='stylesheet' href=normalize_web_path("#{attr 'iconfont-name', 'font-awesome'}.css", (attr :revealjs_vendor_stylesdir, 'revealjs/lib/css/'))

    // For syntax highlighting
    link href="revealjs/lib/css/zenburn.css" rel="stylesheet"

    - case attr 'source-highlighter'
    - when 'coderay'
      - if (attr 'coderay-css', 'class') == 'class'
        - if @safe >= Asciidoctor::SafeMode::SECURE || (attr? :linkcss)
          link rel='stylesheet' href=normalize_web_path('asciidoctor-coderay.css', (attr :stylesdir, ''))
        - else
          style=Asciidoctor::HTML5.default_coderay_stylesheet
    - when 'pygments'
      - if (attr 'pygments-css', 'class') == 'class'
        - if @safe >= Asciidoctor::SafeMode::SECURE || (attr? :linkcss)
          link rel='stylesheet' href=normalize_web_path('asciidoctor-pygments.css', (attr :stylesdir, ''))
        - else
          style=Asciidoctor::HTML5.pygments_stylesheet(attr 'pygments-style')
    - when 'highlightjs'
      link rel='stylesheet' href="#{attr :highlightjsdir, 'https://cdnjs.cloudflare.com/ajax/libs/highlight.js/8.4'}/styles/#{attr 'highlightjs-theme', 'default'}.min.css"
      script src="#{attr :highlightjsdir, 'https://cdnjs.cloudflare.com/ajax/libs/highlight.js/8.4'}/highlight.min.js"
      script hljs.initHighlightingOnLoad()
    - when 'prettify'
      link rel='stylesheet' href="#{attr :prettifydir, 'http://cdnjs.cloudflare.com/ajax/libs/prettify/r298'}/#{attr 'prettify-theme', 'prettify'}.min.css"
      script src="#{attr :prettifydir, 'http://cdnjs.cloudflare.com/ajax/libs/prettify/r298'}/prettify.min.js"
      script document.addEventListener('DOMContentLoaded', prettyPrint)

    // If the query includes 'print-pdf', use the PDF print sheet
    javascript:
      if( window.location.search.match( /print-pdf/gi ) ) {
          var link = document.createElement( 'link' );
          link.rel = 'stylesheet';
          link.type = 'text/css';
          link.href = 'revealjs/css/print/pdf.css';
          document.getElementsByTagName( 'head' )[0].appendChild( link );
      }
  body
    .reveal
      - if attr? :header_image_path
        .header
          img src=image_uri(attr :header_image_path)
      // Any section element inside of this container is displayed as a slide
      .slides
        =content
    - if attr? :footer_copyright
      .footer
        =attr :footer_copyright
    script src="revealjs/lib/js/head.min.js"
    script src="revealjs/js/reveal.min.js"
    javascript:
      // Full list of configuration options available here:
      // https://github.com/hakimel/reveal.js#configuration
       Reveal.initialize({

         // Display controls in the bottom right corner
         controls: true,
         // Display a presentation progress bar
         progress: true,
         // Push each slide change to the browser history
         history: #{browser_history},
         // Enable keyboard shortcuts for navigation
         keyboard: true,
         // Enable the slide overview mode
         overview: true,
         // Vertical centering of slides
         center: #{slide_vertical_alignment},
         // Loop the presentation
         loop: false,
         // Change the presentation direction to be RTL
         rtl: 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,
         // Enable slide navigation via mouse wheel
         mouseWheel: false,
         // Apply a 3D roll to links on hover
         rollingLinks: true,

         margin: 0.2,

         // Display for each slide a number
         slideNumber: #{display_slide_number},

         // Transition speed
         transitionSpeed: 'default', // default/fast/slow
         // Transition style for full page backgrounds
         backgroundTransition: 'default', // default/linear

         theme: Reveal.getQueryHash().theme, // available themes are in /css/theme

         // Transition style
         transition: Reveal.getQueryHash().transition || '#{transition}', // default/cube/page/concave/zoom/linear/fade/none

        // Parallax scrolling
        // parallaxBackgroundImage: 'https://s3.amazonaws.com/hakim-static/reveal-js/reveal-parallax-1.jpg',
        // parallaxBackgroundSize: '2100px 900px',

        // Optional libraries used to extend on reveal.js
         dependencies: [
             { src: 'revealjs/lib/js/classList.js', condition: function() { return !document.body.classList; } },
             { src: 'revealjs/plugin/markdown/marked.js', condition: function() { return !!document.querySelector( '[data-markdown]' ); } },
             { src: 'revealjs/plugin/markdown/markdown.js', condition: function() { return !!document.querySelector( '[data-markdown]' ); } },
             { src: 'revealjs/plugin/zoom-js/zoom.js', async: true, condition: function() { return !!document.body.classList; } },
             { src: 'revealjs/plugin/notes/notes.js', async: true, condition: function() { return !!document.body.classList; } },
             { src: 'revealjs/plugin/math/math.js', async: true }
         ]
         // TODO : Add a parameter to enable/disbale REMOTE
         // { src: 'revealjs/plugin/remotes/remotes.js', async: true, condition: function() { return !!document.body.classList; } },
       });