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-rw-r--r--2018fosdem/plugin/notes-server/client.js65
-rw-r--r--2018fosdem/plugin/notes-server/index.js69
-rw-r--r--2018fosdem/plugin/notes-server/notes.html407
3 files changed, 541 insertions, 0 deletions
diff --git a/2018fosdem/plugin/notes-server/client.js b/2018fosdem/plugin/notes-server/client.js
new file mode 100644
index 0000000..00b277b
--- /dev/null
+++ b/2018fosdem/plugin/notes-server/client.js
@@ -0,0 +1,65 @@
+(function() {
+
+ // don't emit events from inside the previews themselves
+ if( window.location.search.match( /receiver/gi ) ) { return; }
+
+ var socket = io.connect( window.location.origin ),
+ socketId = Math.random().toString().slice( 2 );
+
+ console.log( 'View slide notes at ' + window.location.origin + '/notes/' + socketId );
+
+ window.open( window.location.origin + '/notes/' + socketId, 'notes-' + socketId );
+
+ /**
+ * Posts the current slide data to the notes window
+ */
+ function post() {
+
+ var slideElement = Reveal.getCurrentSlide(),
+ notesElement = slideElement.querySelector( 'aside.notes' );
+
+ var messageData = {
+ notes: '',
+ markdown: false,
+ socketId: socketId,
+ state: Reveal.getState()
+ };
+
+ // Look for notes defined in a slide attribute
+ if( slideElement.hasAttribute( 'data-notes' ) ) {
+ messageData.notes = slideElement.getAttribute( 'data-notes' );
+ }
+
+ // Look for notes defined in an aside element
+ if( notesElement ) {
+ messageData.notes = notesElement.innerHTML;
+ messageData.markdown = typeof notesElement.getAttribute( 'data-markdown' ) === 'string';
+ }
+
+ socket.emit( 'statechanged', messageData );
+
+ }
+
+ // When a new notes window connects, post our current state
+ socket.on( 'new-subscriber', function( data ) {
+ post();
+ } );
+
+ // When the state changes from inside of the speaker view
+ socket.on( 'statechanged-speaker', function( data ) {
+ Reveal.setState( data.state );
+ } );
+
+ // Monitor events that trigger a change in state
+ Reveal.addEventListener( 'slidechanged', post );
+ Reveal.addEventListener( 'fragmentshown', post );
+ Reveal.addEventListener( 'fragmenthidden', post );
+ Reveal.addEventListener( 'overviewhidden', post );
+ Reveal.addEventListener( 'overviewshown', post );
+ Reveal.addEventListener( 'paused', post );
+ Reveal.addEventListener( 'resumed', post );
+
+ // Post the initial state
+ post();
+
+}());
diff --git a/2018fosdem/plugin/notes-server/index.js b/2018fosdem/plugin/notes-server/index.js
new file mode 100644
index 0000000..b95f071
--- /dev/null
+++ b/2018fosdem/plugin/notes-server/index.js
@@ -0,0 +1,69 @@
+var http = require('http');
+var express = require('express');
+var fs = require('fs');
+var io = require('socket.io');
+var Mustache = require('mustache');
+
+var app = express();
+var staticDir = express.static;
+var server = http.createServer(app);
+
+io = io(server);
+
+var opts = {
+ port : 1947,
+ baseDir : __dirname + '/../../'
+};
+
+io.on( 'connection', function( socket ) {
+
+ socket.on( 'new-subscriber', function( data ) {
+ socket.broadcast.emit( 'new-subscriber', data );
+ });
+
+ socket.on( 'statechanged', function( data ) {
+ delete data.state.overview;
+ socket.broadcast.emit( 'statechanged', data );
+ });
+
+ socket.on( 'statechanged-speaker', function( data ) {
+ delete data.state.overview;
+ socket.broadcast.emit( 'statechanged-speaker', data );
+ });
+
+});
+
+[ 'css', 'js', 'images', 'plugin', 'lib' ].forEach( function( dir ) {
+ app.use( '/' + dir, staticDir( opts.baseDir + dir ) );
+});
+
+app.get('/', function( req, res ) {
+
+ res.writeHead( 200, { 'Content-Type': 'text/html' } );
+ fs.createReadStream( opts.baseDir + '/index.html' ).pipe( res );
+
+});
+
+app.get( '/notes/:socketId', function( req, res ) {
+
+ fs.readFile( opts.baseDir + 'plugin/notes-server/notes.html', function( err, data ) {
+ res.send( Mustache.to_html( data.toString(), {
+ socketId : req.params.socketId
+ }));
+ });
+
+});
+
+// Actually listen
+server.listen( opts.port || null );
+
+var brown = '\033[33m',
+ green = '\033[32m',
+ reset = '\033[0m';
+
+var slidesLocation = 'http://localhost' + ( opts.port ? ( ':' + opts.port ) : '' );
+
+console.log( brown + 'reveal.js - Speaker Notes' + reset );
+console.log( '1. Open the slides at ' + green + slidesLocation + reset );
+console.log( '2. Click on the link in your JS console to go to the notes page' );
+console.log( '3. Advance through your slides and your notes will advance automatically' );
diff --git a/2018fosdem/plugin/notes-server/notes.html b/2018fosdem/plugin/notes-server/notes.html
new file mode 100644
index 0000000..ad8c719
--- /dev/null
+++ b/2018fosdem/plugin/notes-server/notes.html
@@ -0,0 +1,407 @@
+<!doctype html>
+<html lang="en">
+ <head>
+ <meta charset="utf-8">
+
+ <title>reveal.js - Slide Notes</title>
+
+ <style>
+ body {
+ font-family: Helvetica;
+ }
+
+ #current-slide,
+ #upcoming-slide,
+ #speaker-controls {
+ padding: 6px;
+ box-sizing: border-box;
+ -moz-box-sizing: border-box;
+ }
+
+ #current-slide iframe,
+ #upcoming-slide iframe {
+ width: 100%;
+ height: 100%;
+ border: 1px solid #ddd;
+ }
+
+ #current-slide .label,
+ #upcoming-slide .label {
+ position: absolute;
+ top: 10px;
+ left: 10px;
+ font-weight: bold;
+ font-size: 14px;
+ z-index: 2;
+ color: rgba( 255, 255, 255, 0.9 );
+ }
+
+ #current-slide {
+ position: absolute;
+ width: 65%;
+ height: 100%;
+ top: 0;
+ left: 0;
+ padding-right: 0;
+ }
+
+ #upcoming-slide {
+ position: absolute;
+ width: 35%;
+ height: 40%;
+ right: 0;
+ top: 0;
+ }
+
+ #speaker-controls {
+ position: absolute;
+ top: 40%;
+ right: 0;
+ width: 35%;
+ height: 60%;
+
+ font-size: 18px;
+ }
+
+ .speaker-controls-time.hidden,
+ .speaker-controls-notes.hidden {
+ display: none;
+ }
+
+ .speaker-controls-time .label,
+ .speaker-controls-notes .label {
+ text-transform: uppercase;
+ font-weight: normal;
+ font-size: 0.66em;
+ color: #666;
+ margin: 0;
+ }
+
+ .speaker-controls-time {
+ border-bottom: 1px solid rgba( 200, 200, 200, 0.5 );
+ margin-bottom: 10px;
+ padding: 10px 16px;
+ padding-bottom: 20px;
+ cursor: pointer;
+ }
+
+ .speaker-controls-time .reset-button {
+ opacity: 0;
+ float: right;
+ color: #666;
+ text-decoration: none;
+ }
+ .speaker-controls-time:hover .reset-button {
+ opacity: 1;
+ }
+
+ .speaker-controls-time .timer,
+ .speaker-controls-time .clock {
+ width: 50%;
+ font-size: 1.9em;
+ }
+
+ .speaker-controls-time .timer {
+ float: left;
+ }
+
+ .speaker-controls-time .clock {
+ float: right;
+ text-align: right;
+ }
+
+ .speaker-controls-time span.mute {
+ color: #bbb;
+ }
+
+ .speaker-controls-notes {
+ padding: 10px 16px;
+ }
+
+ .speaker-controls-notes .value {
+ margin-top: 5px;
+ line-height: 1.4;
+ font-size: 1.2em;
+ }
+
+ .clear {
+ clear: both;
+ }
+
+ @media screen and (max-width: 1080px) {
+ #speaker-controls {
+ font-size: 16px;
+ }
+ }
+
+ @media screen and (max-width: 900px) {
+ #speaker-controls {
+ font-size: 14px;
+ }
+ }
+
+ @media screen and (max-width: 800px) {
+ #speaker-controls {
+ font-size: 12px;
+ }
+ }
+
+ </style>
+ </head>
+
+ <body>
+
+ <div id="current-slide"></div>
+ <div id="upcoming-slide"><span class="label">UPCOMING:</span></div>
+ <div id="speaker-controls">
+ <div class="speaker-controls-time">
+ <h4 class="label">Time <span class="reset-button">Click to Reset</span></h4>
+ <div class="clock">
+ <span class="clock-value">0:00 AM</span>
+ </div>
+ <div class="timer">
+ <span class="hours-value">00</span><span class="minutes-value">:00</span><span class="seconds-value">:00</span>
+ </div>
+ <div class="clear"></div>
+ </div>
+
+ <div class="speaker-controls-notes hidden">
+ <h4 class="label">Notes</h4>
+ <div class="value"></div>
+ </div>
+ </div>
+
+ <script src="/socket.io/socket.io.js"></script>
+ <script src="/plugin/markdown/marked.js"></script>
+
+ <script>
+ (function() {
+
+ var notes,
+ notesValue,
+ currentState,
+ currentSlide,
+ upcomingSlide,
+ connected = false;
+
+ var socket = io.connect( window.location.origin ),
+ socketId = '{{socketId}}';
+
+ socket.on( 'statechanged', function( data ) {
+
+ // ignore data from sockets that aren't ours
+ if( data.socketId !== socketId ) { return; }
+
+ if( connected === false ) {
+ connected = true;
+
+ setupKeyboard();
+ setupNotes();
+ setupTimer();
+
+ }
+
+ handleStateMessage( data );
+
+ } );
+
+ // Load our presentation iframes
+ setupIframes();
+
+ // Once the iframes have loaded, emit a signal saying there's
+ // a new subscriber which will trigger a 'statechanged'
+ // message to be sent back
+ window.addEventListener( 'message', function( event ) {
+
+ var data = JSON.parse( event.data );
+
+ if( data && data.namespace === 'reveal' ) {
+ if( /ready/.test( data.eventName ) ) {
+ socket.emit( 'new-subscriber', { socketId: socketId } );
+ }
+ }
+
+ // Messages sent by reveal.js inside of the current slide preview
+ if( data && data.namespace === 'reveal' ) {
+ if( /slidechanged|fragmentshown|fragmenthidden|overviewshown|overviewhidden|paused|resumed/.test( data.eventName ) && currentState !== JSON.stringify( data.state ) ) {
+ socket.emit( 'statechanged-speaker', { state: data.state } );
+ }
+ }
+
+ } );
+
+ /**
+ * Called when the main window sends an updated state.
+ */
+ function handleStateMessage( data ) {
+
+ // Store the most recently set state to avoid circular loops
+ // applying the same state
+ currentState = JSON.stringify( data.state );
+
+ // No need for updating the notes in case of fragment changes
+ if ( data.notes ) {
+ notes.classList.remove( 'hidden' );
+ if( data.markdown ) {
+ notesValue.innerHTML = marked( data.notes );
+ }
+ else {
+ notesValue.innerHTML = data.notes;
+ }
+ }
+ else {
+ notes.classList.add( 'hidden' );
+ }
+
+ // Update the note slides
+ currentSlide.contentWindow.postMessage( JSON.stringify({ method: 'setState', args: [ data.state ] }), '*' );
+ upcomingSlide.contentWindow.postMessage( JSON.stringify({ method: 'setState', args: [ data.state ] }), '*' );
+ upcomingSlide.contentWindow.postMessage( JSON.stringify({ method: 'next' }), '*' );
+
+ }
+
+ // Limit to max one state update per X ms
+ handleStateMessage = debounce( handleStateMessage, 200 );
+
+ /**
+ * Forward keyboard events to the current slide window.
+ * This enables keyboard events to work even if focus
+ * isn't set on the current slide iframe.
+ */
+ function setupKeyboard() {
+
+ document.addEventListener( 'keydown', function( event ) {
+ currentSlide.contentWindow.postMessage( JSON.stringify({ method: 'triggerKey', args: [ event.keyCode ] }), '*' );
+ } );
+
+ }
+
+ /**
+ * Creates the preview iframes.
+ */
+ function setupIframes() {
+
+ var params = [
+ 'receiver',
+ 'progress=false',
+ 'history=false',
+ 'transition=none',
+ 'backgroundTransition=none'
+ ].join( '&' );
+
+ var currentURL = '/?' + params + '&postMessageEvents=true';
+ var upcomingURL = '/?' + params + '&controls=false';
+
+ currentSlide = document.createElement( 'iframe' );
+ currentSlide.setAttribute( 'width', 1280 );
+ currentSlide.setAttribute( 'height', 1024 );
+ currentSlide.setAttribute( 'src', currentURL );
+ document.querySelector( '#current-slide' ).appendChild( currentSlide );
+
+ upcomingSlide = document.createElement( 'iframe' );
+ upcomingSlide.setAttribute( 'width', 640 );
+ upcomingSlide.setAttribute( 'height', 512 );
+ upcomingSlide.setAttribute( 'src', upcomingURL );
+ document.querySelector( '#upcoming-slide' ).appendChild( upcomingSlide );
+
+ }
+
+ /**
+ * Setup the notes UI.
+ */
+ function setupNotes() {
+
+ notes = document.querySelector( '.speaker-controls-notes' );
+ notesValue = document.querySelector( '.speaker-controls-notes .value' );
+
+ }
+
+ /**
+ * Create the timer and clock and start updating them
+ * at an interval.
+ */
+ function setupTimer() {
+
+ var start = new Date(),
+ timeEl = document.querySelector( '.speaker-controls-time' ),
+ clockEl = timeEl.querySelector( '.clock-value' ),
+ hoursEl = timeEl.querySelector( '.hours-value' ),
+ minutesEl = timeEl.querySelector( '.minutes-value' ),
+ secondsEl = timeEl.querySelector( '.seconds-value' );
+
+ function _updateTimer() {
+
+ var diff, hours, minutes, seconds,
+ now = new Date();
+
+ diff = now.getTime() - start.getTime();
+ hours = Math.floor( diff / ( 1000 * 60 * 60 ) );
+ minutes = Math.floor( ( diff / ( 1000 * 60 ) ) % 60 );
+ seconds = Math.floor( ( diff / 1000 ) % 60 );
+
+ clockEl.innerHTML = now.toLocaleTimeString( 'en-US', { hour12: true, hour: '2-digit', minute:'2-digit' } );
+ hoursEl.innerHTML = zeroPadInteger( hours );
+ hoursEl.className = hours > 0 ? '' : 'mute';
+ minutesEl.innerHTML = ':' + zeroPadInteger( minutes );
+ minutesEl.className = minutes > 0 ? '' : 'mute';
+ secondsEl.innerHTML = ':' + zeroPadInteger( seconds );
+
+ }
+
+ // Update once directly
+ _updateTimer();
+
+ // Then update every second
+ setInterval( _updateTimer, 1000 );
+
+ timeEl.addEventListener( 'click', function() {
+ start = new Date();
+ _updateTimer();
+ return false;
+ } );
+
+ }
+
+ function zeroPadInteger( num ) {
+
+ var str = '00' + parseInt( num );
+ return str.substring( str.length - 2 );
+
+ }
+
+ /**
+ * Limits the frequency at which a function can be called.
+ */
+ function debounce( fn, ms ) {
+
+ var lastTime = 0,
+ timeout;
+
+ return function() {
+
+ var args = arguments;
+ var context = this;
+
+ clearTimeout( timeout );
+
+ var timeSinceLastCall = Date.now() - lastTime;
+ if( timeSinceLastCall > ms ) {
+ fn.apply( context, args );
+ lastTime = Date.now();
+ }
+ else {
+ timeout = setTimeout( function() {
+ fn.apply( context, args );
+ lastTime = Date.now();
+ }, ms - timeSinceLastCall );
+ }
+
+ }
+
+ }
+
+ })();
+ </script>
+
+ </body>
+</html>
generated by cgit v1.2.3 (git 2.25.1) at 2024-05-20 10:23:00 +0000