Carica file su 'plugin/notes-server'
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65
plugin/notes-server/client.js
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65
plugin/notes-server/client.js
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(function() {
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// don't emit events from inside the previews themselves
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if( window.location.search.match( /receiver/gi ) ) { return; }
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var socket = io.connect( window.location.origin ),
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socketId = Math.random().toString().slice( 2 );
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console.log( 'View slide notes at ' + window.location.origin + '/notes/' + socketId );
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window.open( window.location.origin + '/notes/' + socketId, 'notes-' + socketId );
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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() {
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var slideElement = Reveal.getCurrentSlide(),
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notesElement = slideElement.querySelector( 'aside.notes' );
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var messageData = {
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notes: '',
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markdown: false,
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socketId: socketId,
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state: Reveal.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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}
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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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socket.emit( 'statechanged', messageData );
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}
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// When a new notes window connects, post our current state
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socket.on( 'new-subscriber', function( data ) {
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post();
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} );
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// When the state changes from inside of the speaker view
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socket.on( 'statechanged-speaker', function( data ) {
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Reveal.setState( data.state );
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} );
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// Monitor events that trigger a change in state
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Reveal.addEventListener( 'slidechanged', post );
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Reveal.addEventListener( 'fragmentshown', post );
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Reveal.addEventListener( 'fragmenthidden', post );
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Reveal.addEventListener( 'overviewhidden', post );
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Reveal.addEventListener( 'overviewshown', post );
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Reveal.addEventListener( 'paused', post );
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Reveal.addEventListener( 'resumed', post );
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// Post the initial state
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post();
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}());
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69
plugin/notes-server/index.js
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69
plugin/notes-server/index.js
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var http = require('http');
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var express = require('express');
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var fs = require('fs');
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var io = require('socket.io');
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var Mustache = require('mustache');
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var app = express();
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var staticDir = express.static;
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var server = http.createServer(app);
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io = io(server);
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var opts = {
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port : 1947,
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baseDir : __dirname + '/../../'
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};
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io.on( 'connection', function( socket ) {
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socket.on( 'new-subscriber', function( data ) {
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socket.broadcast.emit( 'new-subscriber', data );
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});
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socket.on( 'statechanged', function( data ) {
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delete data.state.overview;
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socket.broadcast.emit( 'statechanged', data );
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});
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socket.on( 'statechanged-speaker', function( data ) {
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delete data.state.overview;
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socket.broadcast.emit( 'statechanged-speaker', data );
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});
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});
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[ 'css', 'js', 'images', 'plugin', 'lib' ].forEach( function( dir ) {
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app.use( '/' + dir, staticDir( opts.baseDir + dir ) );
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});
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app.get('/', function( req, res ) {
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res.writeHead( 200, { 'Content-Type': 'text/html' } );
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fs.createReadStream( opts.baseDir + '/index.html' ).pipe( res );
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});
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app.get( '/notes/:socketId', function( req, res ) {
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fs.readFile( opts.baseDir + 'plugin/notes-server/notes.html', function( err, data ) {
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res.send( Mustache.to_html( data.toString(), {
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socketId : req.params.socketId
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}));
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});
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});
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// Actually listen
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server.listen( opts.port || null );
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var brown = '\033[33m',
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green = '\033[32m',
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reset = '\033[0m';
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var slidesLocation = 'http://localhost' + ( opts.port ? ( ':' + opts.port ) : '' );
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console.log( brown + 'reveal.js - Speaker Notes' + reset );
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console.log( '1. Open the slides at ' + green + slidesLocation + reset );
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console.log( '2. Click on the link in your JS console to go to the notes page' );
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console.log( '3. Advance through your slides and your notes will advance automatically' );
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585
plugin/notes-server/notes.html
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585
plugin/notes-server/notes.html
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<!doctype html>
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<html lang="en">
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<head>
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<meta charset="utf-8">
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<title>reveal.js - Slide Notes</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 {
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width: 100%;
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height: 100%;
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border: 1px solid #ddd;
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}
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#current-slide .label,
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#upcoming-slide .label {
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position: absolute;
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top: 10px;
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left: 10px;
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z-index: 2;
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}
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.overlay-element {
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height: 34px;
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line-height: 34px;
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padding: 0 10px;
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text-shadow: none;
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background: rgba( 220, 220, 220, 0.8 );
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color: #222;
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font-size: 14px;
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}
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.overlay-element.interactive:hover {
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background: rgba( 220, 220, 220, 1 );
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}
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#current-slide {
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position: absolute;
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width: 60%;
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height: 100%;
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top: 0;
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left: 0;
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padding-right: 0;
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}
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#upcoming-slide {
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position: absolute;
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width: 40%;
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height: 40%;
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right: 0;
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top: 0;
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}
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/* Speaker controls */
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#speaker-controls {
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position: absolute;
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top: 40%;
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right: 0;
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width: 40%;
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height: 60%;
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overflow: auto;
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font-size: 18px;
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}
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.speaker-controls-time.hidden,
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.speaker-controls-notes.hidden {
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display: none;
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}
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.speaker-controls-time .label,
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.speaker-controls-notes .label {
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text-transform: uppercase;
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font-weight: normal;
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font-size: 0.66em;
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color: #666;
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margin: 0;
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}
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.speaker-controls-time {
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border-bottom: 1px solid rgba( 200, 200, 200, 0.5 );
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margin-bottom: 10px;
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padding: 10px 16px;
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padding-bottom: 20px;
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cursor: pointer;
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}
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.speaker-controls-time .reset-button {
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opacity: 0;
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float: right;
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color: #666;
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text-decoration: none;
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}
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.speaker-controls-time:hover .reset-button {
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opacity: 1;
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}
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.speaker-controls-time .timer,
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.speaker-controls-time .clock {
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width: 50%;
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font-size: 1.9em;
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}
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.speaker-controls-time .timer {
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float: left;
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}
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.speaker-controls-time .clock {
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float: right;
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text-align: right;
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}
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.speaker-controls-time span.mute {
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color: #bbb;
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}
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.speaker-controls-notes {
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padding: 10px 16px;
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}
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.speaker-controls-notes .value {
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margin-top: 5px;
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line-height: 1.4;
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font-size: 1.2em;
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}
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/* Layout selector */
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#speaker-layout {
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position: absolute;
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top: 10px;
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right: 10px;
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color: #222;
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z-index: 10;
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}
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#speaker-layout select {
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position: absolute;
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width: 100%;
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height: 100%;
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top: 0;
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left: 0;
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border: 0;
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box-shadow: 0;
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cursor: pointer;
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opacity: 0;
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font-size: 1em;
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background-color: transparent;
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-moz-appearance: none;
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-webkit-appearance: none;
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-webkit-tap-highlight-color: rgba(0, 0, 0, 0);
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}
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#speaker-layout select:focus {
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outline: none;
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box-shadow: none;
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}
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.clear {
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clear: both;
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}
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/* Speaker layout: Wide */
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body[data-speaker-layout="wide"] #current-slide,
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body[data-speaker-layout="wide"] #upcoming-slide {
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width: 50%;
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height: 45%;
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padding: 6px;
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}
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body[data-speaker-layout="wide"] #current-slide {
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top: 0;
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left: 0;
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}
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body[data-speaker-layout="wide"] #upcoming-slide {
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top: 0;
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left: 50%;
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}
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body[data-speaker-layout="wide"] #speaker-controls {
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top: 45%;
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left: 0;
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width: 100%;
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height: 50%;
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font-size: 1.25em;
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}
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/* Speaker layout: Tall */
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body[data-speaker-layout="tall"] #current-slide,
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body[data-speaker-layout="tall"] #upcoming-slide {
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width: 45%;
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height: 50%;
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padding: 6px;
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}
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body[data-speaker-layout="tall"] #current-slide {
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top: 0;
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left: 0;
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}
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body[data-speaker-layout="tall"] #upcoming-slide {
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top: 50%;
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left: 0;
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}
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body[data-speaker-layout="tall"] #speaker-controls {
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padding-top: 40px;
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top: 0;
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left: 45%;
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width: 55%;
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height: 100%;
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font-size: 1.25em;
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}
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/* Speaker layout: Notes only */
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body[data-speaker-layout="notes-only"] #current-slide,
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body[data-speaker-layout="notes-only"] #upcoming-slide {
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display: none;
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}
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body[data-speaker-layout="notes-only"] #speaker-controls {
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padding-top: 40px;
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top: 0;
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left: 0;
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width: 100%;
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height: 100%;
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font-size: 1.25em;
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}
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</style>
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</head>
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<body>
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<div id="current-slide"></div>
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<div id="upcoming-slide"><span class="overlay-element label">Upcoming</span></div>
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<div id="speaker-controls">
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<div class="speaker-controls-time">
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<h4 class="label">Time <span class="reset-button">Click to Reset</span></h4>
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<div class="clock">
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<span class="clock-value">0:00 AM</span>
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</div>
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<div class="timer">
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<span class="hours-value">00</span><span class="minutes-value">:00</span><span class="seconds-value">:00</span>
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</div>
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<div class="clear"></div>
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</div>
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<div class="speaker-controls-notes hidden">
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<h4 class="label">Notes</h4>
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<div class="value"></div>
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</div>
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</div>
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<div id="speaker-layout" class="overlay-element interactive">
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<span class="speaker-layout-label"></span>
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<select class="speaker-layout-dropdown"></select>
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</div>
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<script src="/socket.io/socket.io.js"></script>
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<script src="/plugin/markdown/marked.js"></script>
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<script>
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(function() {
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var notes,
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notesValue,
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currentState,
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currentSlide,
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upcomingSlide,
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layoutLabel,
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layoutDropdown,
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connected = false;
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var socket = io.connect( window.location.origin ),
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socketId = '{{socketId}}';
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var SPEAKER_LAYOUTS = {
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'default': 'Default',
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'wide': 'Wide',
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'tall': 'Tall',
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'notes-only': 'Notes only'
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};
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socket.on( 'statechanged', function( data ) {
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// ignore data from sockets that aren't ours
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if( data.socketId !== socketId ) { return; }
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if( connected === false ) {
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connected = true;
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setupKeyboard();
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setupNotes();
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setupTimer();
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}
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handleStateMessage( data );
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} );
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setupLayout();
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// Load our presentation iframes
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setupIframes();
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// Once the iframes have loaded, emit a signal saying there's
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// a new subscriber which will trigger a 'statechanged'
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// message to be sent back
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window.addEventListener( 'message', function( event ) {
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var data = JSON.parse( event.data );
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if( data && data.namespace === 'reveal' ) {
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if( /ready/.test( data.eventName ) ) {
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socket.emit( 'new-subscriber', { socketId: socketId } );
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}
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}
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// Messages sent by reveal.js inside of the current slide preview
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if( data && data.namespace === 'reveal' ) {
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if( /slidechanged|fragmentshown|fragmenthidden|overviewshown|overviewhidden|paused|resumed/.test( data.eventName ) && currentState !== JSON.stringify( data.state ) ) {
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socket.emit( 'statechanged-speaker', { state: data.state } );
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}
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}
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} );
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/**
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* Called when the main window sends an updated state.
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*/
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function handleStateMessage( data ) {
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// Store the most recently set state to avoid circular loops
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// applying the same state
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currentState = JSON.stringify( data.state );
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// No need for updating the notes in case of fragment changes
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if ( data.notes ) {
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notes.classList.remove( 'hidden' );
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if( data.markdown ) {
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notesValue.innerHTML = marked( data.notes );
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}
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else {
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notesValue.innerHTML = data.notes;
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}
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}
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else {
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notes.classList.add( 'hidden' );
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}
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// Update the note slides
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currentSlide.contentWindow.postMessage( JSON.stringify({ method: 'setState', args: [ data.state ] }), '*' );
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upcomingSlide.contentWindow.postMessage( JSON.stringify({ method: 'setState', args: [ data.state ] }), '*' );
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upcomingSlide.contentWindow.postMessage( JSON.stringify({ method: 'next' }), '*' );
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}
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// Limit to max one state update per X ms
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handleStateMessage = debounce( handleStateMessage, 200 );
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/**
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* Forward keyboard events to the current slide window.
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* This enables keyboard events to work even if focus
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* isn't set on the current slide iframe.
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*/
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function setupKeyboard() {
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document.addEventListener( 'keydown', function( event ) {
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currentSlide.contentWindow.postMessage( JSON.stringify({ method: 'triggerKey', args: [ event.keyCode ] }), '*' );
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} );
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}
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/**
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* Creates the preview iframes.
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*/
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function setupIframes() {
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var params = [
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'receiver',
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'progress=false',
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'history=false',
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'transition=none',
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'backgroundTransition=none'
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].join( '&' );
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var currentURL = '/?' + params + '&postMessageEvents=true';
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var upcomingURL = '/?' + params + '&controls=false';
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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>
|
||||
Loading…
Reference in a new issue