<html lang="en"> <head> <meta charset="utf-8"> <title>reveal.js - Speaker View</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; } #connection-status { position: absolute; top: 0; left: 0; width: 100%; height: 100%; z-index: 20; padding: 30% 20% 20% 20%; font-size: 18px; color: #222; background: #fff; text-align: center; box-sizing: border-box; line-height: 1.4; } .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="connection-status">Loading speaker view...</div> <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> (function() { var notes, notesValue, currentState, currentSlide, upcomingSlide, layoutLabel, layoutDropdown, pendingCalls = {}, lastRevealApiCallId = 0, connected = false; var SPEAKER_LAYOUTS = { 'default': 'Default', 'wide': 'Wide', 'tall': 'Tall', 'notes-only': 'Notes only' }; setupLayout(); var connectionStatus = document.querySelector( '#connection-status' ); var connectionTimeout = setTimeout( function() { connectionStatus.innerHTML = 'Error connecting to main window.<br>Please try closing and reopening the speaker view.'; }, 5000 ); window.addEventListener( 'message', function( event ) { clearTimeout( connectionTimeout ); connectionStatus.style.display = 'none'; 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 ); } else if( data.type === 'return' ) { pendingCalls[data.callId](data.result); delete pendingCalls[data.callId]; } } // 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 ]} ), '*' ); } } } ); /** * Asynchronously calls the Reveal.js API of the main frame. */ function callRevealApi( methodName, methodArguments, callback ) { var callId = ++lastRevealApiCallId; pendingCalls[callId] = callback; window.opener.postMessage( JSON.stringify( { namespace: 'reveal-notes', type: 'call', callId: callId, methodName: methodName, arguments: methodArguments } ), '*' ); } /** * 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. * * Block F5 default handling, it reloads and disconnects * the speaker notes window. */ function setupKeyboard() { document.addEventListener( 'keydown', function( event ) { if( event.keyCode === 116 || ( event.metaKey && event.keyCode === 82 ) ) { event.preventDefault(); return false; } 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( callback ) { callRevealApi( 'getSlidesAttributes', [], function ( slideAttributes ) { callRevealApi( 'getConfig', [], function ( config ) { var totalTime = config.totalTime; var minTimePerSlide = config.minimumTimePerSlide || 0; var defaultTiming = config.defaultTiming; if ((defaultTiming == null) && (totalTime == null)) { callback(null); return; } // Setting totalTime overrides defaultTiming if (totalTime) { defaultTiming = 0; } var timings = []; for ( var i in slideAttributes ) { var slide = slideAttributes[ i ]; var timing = defaultTiming; if( slide.hasOwnProperty( 'data-timing' )) { var t = slide[ '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); } if ( totalTime ) { // After we've allocated time to individual slides, we summarize it and // subtract it from the total time var remainingTime = totalTime - timings.reduce( function(a, b) { return a + b; }, 0 ); // The remaining time is divided by the number of slides that have 0 seconds // allocated at the moment, giving the average time-per-slide on the remaining slides var remainingSlides = (timings.filter( function(x) { return x == 0 }) ).length var timePerSlide = Math.round( remainingTime / remainingSlides, 0 ) // And now we replace every zero-value timing with that average timings = timings.map( function(x) { return (x==0 ? timePerSlide : x) } ); } var slidesUnderMinimum = timings.filter( function(x) { return (x < minTimePerSlide) } ).length if ( slidesUnderMinimum ) { message = "The pacing time for " + slidesUnderMinimum + " slide(s) is under the configured minimum of " + minTimePerSlide + " seconds. Check the data-timing attribute on individual slides, or consider increasing the totalTime or minimumTimePerSlide configuration options (or removing some slides)."; alert(message); } callback( timings ); } ); } ); } /** * Return the number of seconds allocated for presenting * all slides up to and including this one. */ function getTimeAllocated( timings, callback ) { callRevealApi( 'getSlidePastCount', [], function ( currentSlide ) { var allocated = 0; for (var i in timings.slice(0, currentSlide + 1)) { allocated += timings[i]; } callback( 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 = null; getTimings( function ( _timings ) { timings = _timings; if (_timings !== null) { pacingTitleEl.style.removeProperty('display'); pacingEl.style.removeProperty('display'); } // Update once directly _updateTimer(); // Then update every second setInterval( _updateTimer, 1000 ); } ); function _resetTimer() { if (timings == null) { start = new Date(); _updateTimer(); } else { // Reset timer to beginning of current slide getTimeAllocated( timings, function ( slideEndTimingSeconds ) { var slideEndTiming = slideEndTimingSeconds * 1000; callRevealApi( 'getSlidePastCount', [], function ( currentSlide ) { 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; } ); 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) { getTimeAllocated( timings, function ( slideEndTimingSeconds ) { var slideEndTiming = slideEndTimingSeconds * 1000; callRevealApi( 'getSlidePastCount', [], function ( currentSlide ) { 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 ); } ); } ); } } /** * 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>