<!doctype html> <html lang=“en”>

<head>
        <meta charset="utf-8">

        <title>reveal.js - Slide Notes</title>

        <style>
                body {
                        font-family: Helvetica;
                        font-size: 18px;
                }

                #current-slide,
                #upcoming-slide,
                #speaker-controls {
                        padding: 6px;
                        box-sizing: border-box;
                        -moz-box-sizing: border-box;
                }

                #current-slide iframe,
                #upcoming-slide iframe {
                        width: 100%;
                        height: 100%;
                        border: 1px solid #ddd;
                }

                #current-slide .label,
                #upcoming-slide .label {
                        position: absolute;
                        top: 10px;
                        left: 10px;
                        z-index: 2;
                }

                .overlay-element {
                        height: 34px;
                        line-height: 34px;
                        padding: 0 10px;
                        text-shadow: none;
                        background: rgba( 220, 220, 220, 0.8 );
                        color: #222;
                        font-size: 14px;
                }

                .overlay-element.interactive:hover {
                        background: rgba( 220, 220, 220, 1 );
                }

                #current-slide {
                        position: absolute;
                        width: 60%;
                        height: 100%;
                        top: 0;
                        left: 0;
                        padding-right: 0;
                }

                #upcoming-slide {
                        position: absolute;
                        width: 40%;
                        height: 40%;
                        right: 0;
                        top: 0;
                }

                /* Speaker controls */
                #speaker-controls {
                        position: absolute;
                        top: 40%;
                        right: 0;
                        width: 40%;
                        height: 60%;
                        overflow: auto;
                        font-size: 18px;
                }

                        .speaker-controls-time.hidden,
                        .speaker-controls-notes.hidden {
                                display: none;
                        }

                        .speaker-controls-time .label,
                        .speaker-controls-pace .label,
                        .speaker-controls-notes .label {
                                text-transform: uppercase;
                                font-weight: normal;
                                font-size: 0.66em;
                                color: #666;
                                margin: 0;
                        }

                        .speaker-controls-time, .speaker-controls-pace {
                                border-bottom: 1px solid rgba( 200, 200, 200, 0.5 );
                                margin-bottom: 10px;
                                padding: 10px 16px;
                                padding-bottom: 20px;
                                cursor: pointer;
                        }

                        .speaker-controls-time .reset-button {
                                opacity: 0;
                                float: right;
                                color: #666;
                                text-decoration: none;
                        }
                        .speaker-controls-time:hover .reset-button {
                                opacity: 1;
                        }

                        .speaker-controls-time .timer,
                        .speaker-controls-time .clock {
                                width: 50%;
                        }

                        .speaker-controls-time .timer,
                        .speaker-controls-time .clock,
                        .speaker-controls-time .pacing .hours-value,
                        .speaker-controls-time .pacing .minutes-value,
                        .speaker-controls-time .pacing .seconds-value {
                                font-size: 1.9em;
                        }

                        .speaker-controls-time .timer {
                                float: left;
                        }

                        .speaker-controls-time .clock {
                                float: right;
                                text-align: right;
                        }

                        .speaker-controls-time span.mute {
                                opacity: 0.3;
                        }

                        .speaker-controls-time .pacing-title {
                                margin-top: 5px;
                        }

                        .speaker-controls-time .pacing.ahead {
                                color: blue;
                        }

                        .speaker-controls-time .pacing.on-track {
                                color: green;
                        }

                        .speaker-controls-time .pacing.behind {
                                color: red;
                        }

                        .speaker-controls-notes {
                                padding: 10px 16px;
                        }

                        .speaker-controls-notes .value {
                                margin-top: 5px;
                                line-height: 1.4;
                                font-size: 1.2em;
                        }

                /* Layout selector */
                #speaker-layout {
                        position: absolute;
                        top: 10px;
                        right: 10px;
                        color: #222;
                        z-index: 10;
                }
                        #speaker-layout select {
                                position: absolute;
                                width: 100%;
                                height: 100%;
                                top: 0;
                                left: 0;
                                border: 0;
                                box-shadow: 0;
                                cursor: pointer;
                                opacity: 0;

                                font-size: 1em;
                                background-color: transparent;

                                -moz-appearance: none;
                                -webkit-appearance: none;
                                -webkit-tap-highlight-color: rgba(0, 0, 0, 0);
                        }

                        #speaker-layout select:focus {
                                outline: none;
                                box-shadow: none;
                        }

                .clear {
                        clear: both;
                }

                /* Speaker layout: Wide */
                body[data-speaker-layout="wide"] #current-slide,
                body[data-speaker-layout="wide"] #upcoming-slide {
                        width: 50%;
                        height: 45%;
                        padding: 6px;
                }

                body[data-speaker-layout="wide"] #current-slide {
                        top: 0;
                        left: 0;
                }

                body[data-speaker-layout="wide"] #upcoming-slide {
                        top: 0;
                        left: 50%;
                }

                body[data-speaker-layout="wide"] #speaker-controls {
                        top: 45%;
                        left: 0;
                        width: 100%;
                        height: 50%;
                        font-size: 1.25em;
                }

                /* Speaker layout: Tall */
                body[data-speaker-layout="tall"] #current-slide,
                body[data-speaker-layout="tall"] #upcoming-slide {
                        width: 45%;
                        height: 50%;
                        padding: 6px;
                }

                body[data-speaker-layout="tall"] #current-slide {
                        top: 0;
                        left: 0;
                }

                body[data-speaker-layout="tall"] #upcoming-slide {
                        top: 50%;
                        left: 0;
                }

                body[data-speaker-layout="tall"] #speaker-controls {
                        padding-top: 40px;
                        top: 0;
                        left: 45%;
                        width: 55%;
                        height: 100%;
                        font-size: 1.25em;
                }

                /* Speaker layout: Notes only */
                body[data-speaker-layout="notes-only"] #current-slide,
                body[data-speaker-layout="notes-only"] #upcoming-slide {
                        display: none;
                }

                body[data-speaker-layout="notes-only"] #speaker-controls {
                        padding-top: 40px;
                        top: 0;
                        left: 0;
                        width: 100%;
                        height: 100%;
                        font-size: 1.25em;
                }

                @media screen and (max-width: 1080px) {
                        body[data-speaker-layout="default"] #speaker-controls {
                                font-size: 16px;
                        }
                }

                @media screen and (max-width: 900px) {
                        body[data-speaker-layout="default"] #speaker-controls {
                                font-size: 14px;
                        }
                }

                @media screen and (max-width: 800px) {
                        body[data-speaker-layout="default"] #speaker-controls {
                                font-size: 12px;
                        }
                }

        </style>
</head>

<body>

        <div id="current-slide"></div>
        <div id="upcoming-slide"><span class="overlay-element label">Upcoming</span></div>
        <div id="speaker-controls">
                <div class="speaker-controls-time">
                        <h4 class="label">Time <span class="reset-button">Click to Reset</span></h4>
                        <div class="clock">
                                <span class="clock-value">0:00 AM</span>
                        </div>
                        <div class="timer">
                                <span class="hours-value">00</span><span class="minutes-value">:00</span><span class="seconds-value">:00</span>
                        </div>
                        <div class="clear"></div>

                        <h4 class="label pacing-title" style="display: none">Pacing – Time to finish current slide</h4>
                        <div class="pacing" style="display: none">
                                <span class="hours-value">00</span><span class="minutes-value">:00</span><span class="seconds-value">:00</span>
                        </div>
                </div>

                <div class="speaker-controls-notes hidden">
                        <h4 class="label">Notes</h4>
                        <div class="value"></div>
                </div>
        </div>
        <div id="speaker-layout" class="overlay-element interactive">
                <span class="speaker-layout-label"></span>
                <select class="speaker-layout-dropdown"></select>
        </div>

        <script src="../../plugin/markdown/marked.js"></script>
        <script>

                (function() {

                        var notes,
                                notesValue,
                                currentState,
                                currentSlide,
                                upcomingSlide,
                                layoutLabel,
                                layoutDropdown,
                                connected = false;

                        var SPEAKER_LAYOUTS = {
                                'default': 'Default',
                                'wide': 'Wide',
                                'tall': 'Tall',
                                'notes-only': 'Notes only'
                        };

                        setupLayout();

                        window.addEventListener( 'message', function( event ) {

                                var data = JSON.parse( event.data );

                                // The overview mode is only useful to the reveal.js instance
                                // where navigation occurs so we don't sync it
                                if( data.state ) delete data.state.overview;

                                // Messages sent by the notes plugin inside of the main window
                                if( data && data.namespace === 'reveal-notes' ) {
                                        if( data.type === 'connect' ) {
                                                handleConnectMessage( data );
                                        }
                                        else if( data.type === 'state' ) {
                                                handleStateMessage( data );
                                        }
                                }
                                // Messages sent by the reveal.js inside of the current slide preview
                                else if( data && data.namespace === 'reveal' ) {
                                        if( /ready/.test( data.eventName ) ) {
                                                // Send a message back to notify that the handshake is complete
                                                window.opener.postMessage( JSON.stringify({ namespace: 'reveal-notes', type: 'connected'} ), '*' );
                                        }
                                        else if( /slidechanged|fragmentshown|fragmenthidden|paused|resumed/.test( data.eventName ) && currentState !== JSON.stringify( data.state ) ) {

                                                window.opener.postMessage( JSON.stringify({ method: 'setState', args: [ data.state ]} ), '*' );

                                        }
                                }

                        } );

                        /**
                         * Called when the main window is trying to establish a
                         * connection.
                         */
                        function handleConnectMessage( data ) {

                                if( connected === false ) {
                                        connected = true;

                                        setupIframes( data );
                                        setupKeyboard();
                                        setupNotes();
                                        setupTimer();
                                }

                        }

                        /**
                         * Called when the main window sends an updated state.
                         */
                        function handleStateMessage( data ) {

                                // Store the most recently set state to avoid circular loops
                                // applying the same state
                                currentState = JSON.stringify( data.state );

                                // No need for updating the notes in case of fragment changes
                                if ( data.notes ) {
                                        notes.classList.remove( 'hidden' );
                                        notesValue.style.whiteSpace = data.whitespace;
                                        if( data.markdown ) {
                                                notesValue.innerHTML = marked( data.notes );
                                        }
                                        else {
                                                notesValue.innerHTML = data.notes;
                                        }
                                }
                                else {
                                        notes.classList.add( 'hidden' );
                                }

                                // Update the note slides
                                currentSlide.contentWindow.postMessage( JSON.stringify({ method: 'setState', args: [ data.state ] }), '*' );
                                upcomingSlide.contentWindow.postMessage( JSON.stringify({ method: 'setState', args: [ data.state ] }), '*' );
                                upcomingSlide.contentWindow.postMessage( JSON.stringify({ method: 'next' }), '*' );

                        }

                        // Limit to max one state update per X ms
                        handleStateMessage = debounce( handleStateMessage, 200 );

                        /**
                         * Forward keyboard events to the current slide window.
                         * This enables keyboard events to work even if focus
                         * isn't set on the current slide iframe.
                         */
                        function setupKeyboard() {

                                document.addEventListener( 'keydown', function( event ) {
                                        currentSlide.contentWindow.postMessage( JSON.stringify({ method: 'triggerKey', args: [ event.keyCode ] }), '*' );
                                } );

                        }

                        /**
                         * Creates the preview iframes.
                         */
                        function setupIframes( data ) {

                                var params = [
                                        'receiver',
                                        'progress=false',
                                        'history=false',
                                        'transition=none',
                                        'autoSlide=0',
                                        'backgroundTransition=none'
                                ].join( '&' );

                                var urlSeparator = /\?/.test(data.url) ? '&' : '?';
                                var hash = '#/' + data.state.indexh + '/' + data.state.indexv;
                                var currentURL = data.url + urlSeparator + params + '&postMessageEvents=true' + hash;
                                var upcomingURL = data.url + urlSeparator + params + '&controls=false' + hash;

                                currentSlide = document.createElement( 'iframe' );
                                currentSlide.setAttribute( 'width', 1280 );
                                currentSlide.setAttribute( 'height', 1024 );
                                currentSlide.setAttribute( 'src', currentURL );
                                document.querySelector( '#current-slide' ).appendChild( currentSlide );

                                upcomingSlide = document.createElement( 'iframe' );
                                upcomingSlide.setAttribute( 'width', 640 );
                                upcomingSlide.setAttribute( 'height', 512 );
                                upcomingSlide.setAttribute( 'src', upcomingURL );
                                document.querySelector( '#upcoming-slide' ).appendChild( upcomingSlide );

                        }

                        /**
                         * Setup the notes UI.
                         */
                        function setupNotes() {

                                notes = document.querySelector( '.speaker-controls-notes' );
                                notesValue = document.querySelector( '.speaker-controls-notes .value' );

                        }

                        function getTimings() {

                                var slides = Reveal.getSlides();
                                var defaultTiming = Reveal.getConfig().defaultTiming;
                                if (defaultTiming == null) {
                                        return null;
                                }
                                var timings = [];
                                for ( var i in slides ) {
                                        var slide = slides[i];
                                        var timing = defaultTiming;
                                        if( slide.hasAttribute( 'data-timing' )) {
                                                var t = slide.getAttribute( 'data-timing' );
                                                timing = parseInt(t);
                                                if( isNaN(timing) ) {
                                                        console.warn("Could not parse timing '" + t + "' of slide " + i + "; using default of " + defaultTiming);
                                                        timing = defaultTiming;
                                                }
                                        }
                                        timings.push(timing);
                                }
                                return timings;

                        }

                        /**
                         * Return the number of seconds allocated for presenting
                         * all slides up to and including this one.
                         */
                        function getTimeAllocated(timings) {

                                var slides = Reveal.getSlides();
                                var allocated = 0;
                                var currentSlide = Reveal.getSlidePastCount();
                                for (var i in slides.slice(0, currentSlide + 1)) {
                                        allocated += timings[i];
                                }
                                return allocated;

                        }

                        /**
                         * Create the timer and clock and start updating them
                         * at an interval.
                         */
                        function setupTimer() {

                                var start = new Date(),
                                timeEl = document.querySelector( '.speaker-controls-time' ),
                                clockEl = timeEl.querySelector( '.clock-value' ),
                                hoursEl = timeEl.querySelector( '.hours-value' ),
                                minutesEl = timeEl.querySelector( '.minutes-value' ),
                                secondsEl = timeEl.querySelector( '.seconds-value' ),
                                pacingTitleEl = timeEl.querySelector( '.pacing-title' ),
                                pacingEl = timeEl.querySelector( '.pacing' ),
                                pacingHoursEl = pacingEl.querySelector( '.hours-value' ),
                                pacingMinutesEl = pacingEl.querySelector( '.minutes-value' ),
                                pacingSecondsEl = pacingEl.querySelector( '.seconds-value' );

                                var timings = getTimings();
                                if (timings !== null) {
                                        pacingTitleEl.style.removeProperty('display');
                                        pacingEl.style.removeProperty('display');
                                }

                                function _displayTime( hrEl, minEl, secEl, time) {

                                        var sign = Math.sign(time) == -1 ? "-" : "";
                                        time = Math.abs(Math.round(time / 1000));
                                        var seconds = time % 60;
                                        var minutes = Math.floor( time / 60 ) % 60 ;
                                        var hours = Math.floor( time / ( 60 * 60 )) ;
                                        hrEl.innerHTML = sign + zeroPadInteger( hours );
                                        if (hours == 0) {
                                                hrEl.classList.add( 'mute' );
                                        }
                                        else {
                                                hrEl.classList.remove( 'mute' );
                                        }
                                        minEl.innerHTML = ':' + zeroPadInteger( minutes );
                                        if (hours == 0 && minutes == 0) {
                                                minEl.classList.add( 'mute' );
                                        }
                                        else {
                                                minEl.classList.remove( 'mute' );
                                        }
                                        secEl.innerHTML = ':' + zeroPadInteger( seconds );
                                }

                                function _updateTimer() {

                                        var diff, hours, minutes, seconds,
                                        now = new Date();

                                        diff = now.getTime() - start.getTime();

                                        clockEl.innerHTML = now.toLocaleTimeString( 'en-US', { hour12: true, hour: '2-digit', minute:'2-digit' } );
                                        _displayTime( hoursEl, minutesEl, secondsEl, diff );
                                        if (timings !== null) {
                                                _updatePacing(diff);
                                        }

                                }

                                function _updatePacing(diff) {

                                        var slideEndTiming = getTimeAllocated(timings) * 1000;
                                        var currentSlide = Reveal.getSlidePastCount();
                                        var currentSlideTiming = timings[currentSlide] * 1000;
                                        var timeLeftCurrentSlide = slideEndTiming - diff;
                                        if (timeLeftCurrentSlide < 0) {
                                                pacingEl.className = 'pacing behind';
                                        }
                                        else if (timeLeftCurrentSlide < currentSlideTiming) {
                                                pacingEl.className = 'pacing on-track';
                                        }
                                        else {
                                                pacingEl.className = 'pacing ahead';
                                        }
                                        _displayTime( pacingHoursEl, pacingMinutesEl, pacingSecondsEl, timeLeftCurrentSlide );

                                }

                                // Update once directly
                                _updateTimer();

                                // Then update every second
                                setInterval( _updateTimer, 1000 );

                                function _resetTimer() {

                                        if (timings == null) {
                                                start = new Date();
                                        }
                                        else {
                                                // Reset timer to beginning of current slide
                                                var slideEndTiming = getTimeAllocated(timings) * 1000;
                                                var currentSlide = Reveal.getSlidePastCount();
                                                var currentSlideTiming = timings[currentSlide] * 1000;
                                                var previousSlidesTiming = slideEndTiming - currentSlideTiming;
                                                var now = new Date();
                                                start = new Date(now.getTime() - previousSlidesTiming);
                                        }
                                        _updateTimer();

                                }

                                timeEl.addEventListener( 'click', function() {
                                        _resetTimer();
                                        return false;
                                } );

                        }

                        /**
                         * Sets up the speaker view layout and layout selector.
                         */
                        function setupLayout() {

                                layoutDropdown = document.querySelector( '.speaker-layout-dropdown' );
                                layoutLabel = document.querySelector( '.speaker-layout-label' );

                                // Render the list of available layouts
                                for( var id in SPEAKER_LAYOUTS ) {
                                        var option = document.createElement( 'option' );
                                        option.setAttribute( 'value', id );
                                        option.textContent = SPEAKER_LAYOUTS[ id ];
                                        layoutDropdown.appendChild( option );
                                }

                                // Monitor the dropdown for changes
                                layoutDropdown.addEventListener( 'change', function( event ) {

                                        setLayout( layoutDropdown.value );

                                }, false );

                                // Restore any currently persisted layout
                                setLayout( getLayout() );

                        }

                        /**
                         * Sets a new speaker view layout. The layout is persisted
                         * in local storage.
                         */
                        function setLayout( value ) {

                                var title = SPEAKER_LAYOUTS[ value ];

                                layoutLabel.innerHTML = 'Layout' + ( title ? ( ': ' + title ) : '' );
                                layoutDropdown.value = value;

                                document.body.setAttribute( 'data-speaker-layout', value );

                                // Persist locally
                                if( supportsLocalStorage() ) {
                                        window.localStorage.setItem( 'reveal-speaker-layout', value );
                                }

                        }

                        /**
                         * Returns the ID of the most recently set speaker layout
                         * or our default layout if none has been set.
                         */
                        function getLayout() {

                                if( supportsLocalStorage() ) {
                                        var layout = window.localStorage.getItem( 'reveal-speaker-layout' );
                                        if( layout ) {
                                                return layout;
                                        }
                                }

                                // Default to the first record in the layouts hash
                                for( var id in SPEAKER_LAYOUTS ) {
                                        return id;
                                }

                        }

                        function supportsLocalStorage() {

                                try {
                                        localStorage.setItem('test', 'test');
                                        localStorage.removeItem('test');
                                        return true;
                                }
                                catch( e ) {
                                        return false;
                                }

                        }

                        function zeroPadInteger( num ) {

                                var str = '00' + parseInt( num );
                                return str.substring( str.length - 2 );

                        }

                        /**
                         * Limits the frequency at which a function can be called.
                         */
                        function debounce( fn, ms ) {

                                var lastTime = 0,
                                        timeout;

                                return function() {

                                        var args = arguments;
                                        var context = this;

                                        clearTimeout( timeout );

                                        var timeSinceLastCall = Date.now() - lastTime;
                                        if( timeSinceLastCall > ms ) {
                                                fn.apply( context, args );
                                                lastTime = Date.now();
                                        }
                                        else {
                                                timeout = setTimeout( function() {
                                                        fn.apply( context, args );
                                                        lastTime = Date.now();
                                                }, ms - timeSinceLastCall );
                                        }

                                }

                        }

                })();

        </script>
</body>

</html>