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import speakerViewHTML from './speaker-view.html';
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import marked from 'marked';
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/**
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* Handles opening of and synchronization with the reveal.js
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* notes window.
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*
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* Handshake process:
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* 1. This window posts 'connect' to notes window
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* - Includes URL of presentation to show
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* 2. Notes window responds with 'connected' when it is available
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* 3. This window proceeds to send the current presentation state
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* to the notes window
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*/
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const Plugin = () => {
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let popup = null;
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let deck;
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function openNotes() {
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if (popup && !popup.closed) {
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popup.focus();
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return;
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}
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popup = window.open( 'about:blank', 'reveal.js - Notes', 'width=1100,height=700' );
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popup.marked = marked;
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popup.document.write( speakerViewHTML );
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if( !popup ) {
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alert( 'Speaker view popup failed to open. Please make sure popups are allowed and reopen the speaker view.' );
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return;
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}
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/**
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* Connect to the notes window through a postmessage handshake.
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* Using postmessage enables us to work in situations where the
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* origins differ, such as a presentation being opened from the
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* file system.
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*/
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function connect() {
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// Keep trying to connect until we get a 'connected' message back
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let connectInterval = setInterval( function() {
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popup.postMessage( JSON.stringify( {
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namespace: 'reveal-notes',
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type: 'connect',
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url: window.location.protocol + '//' + window.location.host + window.location.pathname + window.location.search,
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state: deck.getState()
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} ), '*' );
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}, 500 );
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window.addEventListener( 'message', function( event ) {
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let data = JSON.parse( event.data );
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if( data && data.namespace === 'reveal-notes' && data.type === 'connected' ) {
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clearInterval( connectInterval );
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onConnected();
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}
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if( data && data.namespace === 'reveal-notes' && data.type === 'call' ) {
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callRevealApi( data.methodName, data.arguments, data.callId );
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}
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} );
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}
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/**
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* Calls the specified Reveal.js method with the provided argument
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* and then pushes the result to the notes frame.
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*/
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function callRevealApi( methodName, methodArguments, callId ) {
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let result = deck[methodName].apply( deck, methodArguments );
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popup.postMessage( JSON.stringify( {
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namespace: 'reveal-notes',
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type: 'return',
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result: result,
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callId: callId
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} ), '*' );
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}
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/**
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* Posts the current slide data to the notes window
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*/
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function post( event ) {
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let slideElement = deck.getCurrentSlide(),
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notesElement = slideElement.querySelector( 'aside.notes' ),
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fragmentElement = slideElement.querySelector( '.current-fragment' );
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let messageData = {
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namespace: 'reveal-notes',
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type: 'state',
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notes: '',
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markdown: false,
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whitespace: 'normal',
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state: deck.getState()
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};
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// Look for notes defined in a slide attribute
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if( slideElement.hasAttribute( 'data-notes' ) ) {
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messageData.notes = slideElement.getAttribute( 'data-notes' );
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messageData.whitespace = 'pre-wrap';
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}
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// Look for notes defined in a fragment
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if( fragmentElement ) {
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let fragmentNotes = fragmentElement.querySelector( 'aside.notes' );
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if( fragmentNotes ) {
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notesElement = fragmentNotes;
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}
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else if( fragmentElement.hasAttribute( 'data-notes' ) ) {
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messageData.notes = fragmentElement.getAttribute( 'data-notes' );
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messageData.whitespace = 'pre-wrap';
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// In case there are slide notes
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notesElement = null;
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}
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}
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// Look for notes defined in an aside element
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if( notesElement ) {
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messageData.notes = notesElement.innerHTML;
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messageData.markdown = typeof notesElement.getAttribute( 'data-markdown' ) === 'string';
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}
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popup.postMessage( JSON.stringify( messageData ), '*' );
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}
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/**
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* Called once we have established a connection to the notes
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* window.
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*/
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function onConnected() {
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// Monitor events that trigger a change in state
|
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deck.on( 'slidechanged', post );
|
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deck.on( 'fragmentshown', post );
|
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deck.on( 'fragmenthidden', post );
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deck.on( 'overviewhidden', post );
|
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deck.on( 'overviewshown', post );
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deck.on( 'paused', post );
|
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deck.on( 'resumed', post );
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|
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// Post the initial state
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post();
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}
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connect();
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|
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}
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return {
|
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id: 'notes',
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init: function( reveal ) {
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deck = reveal;
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|
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if( !/receiver/i.test( window.location.search ) ) {
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// If the there's a 'notes' query set, open directly
|
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if( window.location.search.match( /(\?|\&)notes/gi ) !== null ) {
|
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openNotes();
|
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}
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// Open the notes when the 's' key is hit
|
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deck.addKeyBinding({keyCode: 83, key: 'S', description: 'Speaker notes view'}, function() {
|
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openNotes();
|
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} );
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|
||||
}
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},
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open: openNotes
|
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};
|
||||
|
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};
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export default Plugin;
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<html lang="en">
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<head>
|
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<meta charset="utf-8">
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|
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<title>reveal.js - Speaker View</title>
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<style>
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body {
|
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font-family: Helvetica;
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font-size: 18px;
|
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}
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#current-slide,
|
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#upcoming-slide,
|
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#speaker-controls {
|
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padding: 6px;
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box-sizing: border-box;
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-moz-box-sizing: border-box;
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}
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#current-slide iframe,
|
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#upcoming-slide iframe {
|
||||
width: 100%;
|
||||
height: 100%;
|
||||
border: 1px solid #ddd;
|
||||
}
|
||||
|
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#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>
|
||||
Reference in new issue
Block a user