<!doctype html> <html lang="en"> <head> <meta charset="utf-8"> <title>reveal.js - Slide Notes</title> <style> body { font-family: Helvetica; } #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; font-weight: bold; font-size: 14px; z-index: 2; color: rgba( 255, 255, 255, 0.9 ); } #current-slide { position: absolute; width: 65%; height: 100%; top: 0; left: 0; padding-right: 0; } #upcoming-slide { position: absolute; width: 35%; height: 40%; right: 0; top: 0; } #speaker-controls { position: absolute; top: 40%; right: 0; width: 35%; height: 60%; 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; } .clear { clear: both; } @media screen and (max-width: 1080px) { #speaker-controls { font-size: 16px; } } @media screen and (max-width: 900px) { #speaker-controls { font-size: 14px; } } @media screen and (max-width: 800px) { #speaker-controls { font-size: 12px; } } </style> </head> <body> <div id="current-slide"></div> <div id="upcoming-slide"><span class="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> <script src="/socket.io/socket.io.js"></script> <script src="/plugin/markdown/marked.js"></script> <script> (function() { var notes, notesValue, currentState, currentSlide, upcomingSlide, connected = false; var socket = io.connect( window.location.origin ), socketId = '{{socketId}}'; 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 ); } ); // 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; } ); } 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>