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- <!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-notes .label {
- text-transform: uppercase;
- font-weight: normal;
- font-size: 0.66em;
- color: #666;
- margin: 0;
- }
- .speaker-controls-time {
- 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%;
- font-size: 1.9em;
- }
- .speaker-controls-time .timer {
- float: left;
- }
- .speaker-controls-time .clock {
- float: right;
- text-align: right;
- }
- .speaker-controls-time span.mute {
- color: #bbb;
- }
- .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;
- }
- </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>
- </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="/socket.io/socket.io.js"></script>
- <script src="/plugin/markdown/marked.js"></script>
- <script>
- (function() {
- var notes,
- notesValue,
- currentState,
- currentSlide,
- upcomingSlide,
- layoutLabel,
- layoutDropdown,
- connected = false;
- var socket = io.connect( window.location.origin ),
- socketId = '{{socketId}}';
- var SPEAKER_LAYOUTS = {
- 'default': 'Default',
- 'wide': 'Wide',
- 'tall': 'Tall',
- 'notes-only': 'Notes only'
- };
- socket.on( 'statechanged', function( data ) {
- // ignore data from sockets that aren't ours
- if( data.socketId !== socketId ) { return; }
- if( connected === false ) {
- connected = true;
- setupKeyboard();
- setupNotes();
- setupTimer();
- }
- handleStateMessage( data );
- } );
- setupLayout();
- // Load our presentation iframes
- setupIframes();
- // Once the iframes have loaded, emit a signal saying there's
- // a new subscriber which will trigger a 'statechanged'
- // message to be sent back
- window.addEventListener( 'message', function( event ) {
- var data = JSON.parse( event.data );
- if( data && data.namespace === 'reveal' ) {
- if( /ready/.test( data.eventName ) ) {
- socket.emit( 'new-subscriber', { socketId: socketId } );
- }
- }
- // Messages sent by reveal.js inside of the current slide preview
- if( data && data.namespace === 'reveal' ) {
- if( /slidechanged|fragmentshown|fragmenthidden|overviewshown|overviewhidden|paused|resumed/.test( data.eventName ) && currentState !== JSON.stringify( data.state ) ) {
- socket.emit( 'statechanged-speaker', { state: data.state } );
- }
- }
- } );
- /**
- * 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' );
- 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() {
- var params = [
- 'receiver',
- 'progress=false',
- 'history=false',
- 'transition=none',
- 'backgroundTransition=none'
- ].join( '&' );
- var currentURL = '/?' + params + '&postMessageEvents=true';
- var upcomingURL = '/?' + params + '&controls=false';
- 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' );
- }
- /**
- * 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' );
- function _updateTimer() {
- var diff, hours, minutes, seconds,
- now = new Date();
- diff = now.getTime() - start.getTime();
- hours = Math.floor( diff / ( 1000 * 60 * 60 ) );
- minutes = Math.floor( ( diff / ( 1000 * 60 ) ) % 60 );
- seconds = Math.floor( ( diff / 1000 ) % 60 );
- clockEl.innerHTML = now.toLocaleTimeString( 'en-US', { hour12: true, hour: '2-digit', minute:'2-digit' } );
- hoursEl.innerHTML = zeroPadInteger( hours );
- hoursEl.className = hours > 0 ? '' : 'mute';
- minutesEl.innerHTML = ':' + zeroPadInteger( minutes );
- minutesEl.className = minutes > 0 ? '' : 'mute';
- secondsEl.innerHTML = ':' + zeroPadInteger( seconds );
- }
- // Update once directly
- _updateTimer();
- // Then update every second
- setInterval( _updateTimer, 1000 );
- timeEl.addEventListener( 'click', function() {
- start = new Date();
- _updateTimer();
- 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( window.localStorage ) {
- 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( window.localStorage ) {
- 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 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>
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