notes.html

<!doctype html>
<html lang="en">
	<head>
		<meta charset="utf-8">

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

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

			#notes {
				font-size: 24px;
				width: 640px;
				margin-top: 5px;
				clear: left;
			}

			#wrap-current-slide {
				width: 640px;
				height: 512px;
				float: left;
				overflow: hidden;
			}

			#current-slide {
				width: 1280px;
				height: 1024px;
				border: none;

				-webkit-transform-origin: 0 0;
				   -moz-transform-origin: 0 0;
					-ms-transform-origin: 0 0;
					 -o-transform-origin: 0 0;
						transform-origin: 0 0;

				-webkit-transform: scale(0.5);
				   -moz-transform: scale(0.5);
					-ms-transform: scale(0.5);
					 -o-transform: scale(0.5);
						transform: scale(0.5);
			}

			#wrap-next-slide {
				width: 448px;
				height: 358px;
				float: left;
				margin: 0 0 0 10px;
				overflow: hidden;
			}

			#next-slide {
				width: 1280px;
				height: 1024px;
				border: none;

				-webkit-transform-origin: 0 0;
				   -moz-transform-origin: 0 0;
					-ms-transform-origin: 0 0;
					 -o-transform-origin: 0 0;
						transform-origin: 0 0;

				-webkit-transform: scale(0.35);
				   -moz-transform: scale(0.35);
					-ms-transform: scale(0.35);
					 -o-transform: scale(0.35);
						transform: scale(0.35);
			}

			.slides {
				position: relative;
				margin-bottom: 10px;
				border: 1px solid black;
				border-radius: 2px;
				background: rgb(28, 30, 32);
			}

			.slides span {
				position: absolute;
				top: 3px;
				left: 3px;
				font-weight: bold;
				font-size: 14px;
				z-index: 2;
				color: rgba( 255, 255, 255, 0.9 );
			}

			.error {
				font-weight: bold;
				color: red;
				font-size: 1.5em;
				text-align: center;
				margin-top: 10%;
			}

			.error code {
				font-family: monospace;
			}

			.time {
				width: 448px;
				margin: 30px 0 0 10px;
				float: left;
				text-align: center;
				opacity: 0;

				-webkit-transition: opacity 0.4s;
				   -moz-transition: opacity 0.4s;
				     -o-transition: opacity 0.4s;
				        transition: opacity 0.4s;
			}

			.elapsed,
			.clock {
				color: #333;
				font-size: 2em;
				text-align: center;
				display: inline-block;
				padding: 0.5em;
				background-color: #eee;
				border-radius: 10px;
			}

			.elapsed h2,
			.clock h2 {
				font-size: 0.8em;
				line-height: 100%;
				margin: 0;
				color: #aaa;
			}

			.elapsed .mute {
				color: #ddd;
			}

		</style>
	</head>

	<body>

		<div id="wrap-current-slide" class="slides"></div>
		<div id="wrap-next-slide" class="slides"><span>UPCOMING:</span></div>

		<div class="time">
			<div class="clock">
				<h2>Time</h2>
				<span id="clock">0:00:00 AM</span>
			</div>
			<div class="elapsed">
				<h2>Elapsed</h2>
				<span id="hours">00</span><span id="minutes">:00</span><span id="seconds">:00</span>
			</div>
		</div>

		<div id="notes"></div>

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

			(function() {

				var notes,
					currentState,
					currentSlide,
					nextSlide,
					connected = false;

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

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

					// 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|overviewshown|overviewhidden|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 );
						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 !== undefined) {
						if( data.markdown ) {
							notes.innerHTML = marked( data.notes );
						}
						else {
							notes.innerHTML = data.notes;
						}
					}

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

				}

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

					notes = document.getElementById( 'notes' );

					var url = data.url + '?receiver&progress=false&overview=false&history=false';
					var hash = '#/' + data.state.indexh + '/' + data.state.indexv;

					currentSlide = document.createElement( 'iframe' );
					currentSlide.setAttribute( 'id', 'current-slide' );
					currentSlide.setAttribute( 'width', 1280 );
					currentSlide.setAttribute( 'height', 1024 );
					currentSlide.setAttribute( 'src', url + '&postMessageEvents=true' + hash );
					document.querySelector( '#wrap-current-slide' ).appendChild( currentSlide );

					nextSlide = document.createElement( 'iframe' );
					nextSlide.setAttribute( 'id', 'next-slide' );
					nextSlide.setAttribute( 'width', 640 );
					nextSlide.setAttribute( 'height', 512 );
					nextSlide.setAttribute( 'src', url + '&controls=false' + hash );
					document.querySelector( '#wrap-next-slide' ).appendChild( nextSlide );

				}

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

					var start = new Date(),
						timeEl = document.querySelector( '.time' ),
						clockEl = document.getElementById( 'clock' ),
						hoursEl = document.getElementById( 'hours' ),
						minutesEl = document.getElementById( 'minutes' ),
						secondsEl = document.getElementById( 'seconds' );

					setInterval( function() {

						timeEl.style.opacity = 1;

						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();
						hoursEl.innerHTML = zeroPadInteger( hours );
						hoursEl.className = hours > 0 ? '' : 'mute';
						minutesEl.innerHTML = ':' + zeroPadInteger( minutes );
						minutesEl.className = minutes > 0 ? '' : 'mute';
						secondsEl.innerHTML = ':' + zeroPadInteger( seconds );

					}, 1000 );

				}

				function zeroPadInteger( num ) {

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

				}

			})();

		</script>
	</body>
</html>