talk-hm-0x15/plugin/notes/notes.html
Adam Spiers 715cf0ba11 optionally display pacing advice based on slide timings
Add an option to display advice on whether the current pace of the
presentation is on track for the right timing (shown as green), and if
not, whether the presenter should speed up (shown as red) or has the
luxury of slowing down (blue).

The pacing timer can be enabled by configuring by the `defaultTiming`
parameter in the `Reveal` configuration block, which specifies the
number of seconds per slide.  120 can be a reasonable rule of thumb.
Timings can also be given per slide `<section>` by setting the
`data-timing` attribute.  Both values are in numbers of seconds.

When the option is enabled, clicking on the timers will reset the timer
to the beginning of the current slide, i.e. as if pacing was perfectly
on track, not to zero as if the presentation had just begun.
2017-04-20 16:11:10 +01:00

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<!doctype html>
<html lang="en">
<head>
<meta charset="utf-8">
<title>reveal.js - Slide Notes</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;
}
.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.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="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</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>
to finish current slide
</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 src="../../plugin/markdown/marked.js"></script>
<script>
(function() {
var notes,
notesValue,
currentState,
currentSlide,
upcomingSlide,
layoutLabel,
layoutDropdown,
connected = false;
var SPEAKER_LAYOUTS = {
'default': 'Default',
'wide': 'Wide',
'tall': 'Tall',
'notes-only': 'Notes only'
};
setupLayout();
window.addEventListener( 'message', function( event ) {
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 );
}
}
// 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 ]} ), '*' );
}
}
} );
/**
* 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.
*/
function setupKeyboard() {
document.addEventListener( 'keydown', function( event ) {
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() {
var slides = Reveal.getSlides();
var defaultTiming = Reveal.getConfig().defaultTiming;
if (defaultTiming == null) {
return null;
}
var timings = [];
for ( var i in slides ) {
var slide = slides[i];
var timing = defaultTiming;
if( slide.hasAttribute( 'data-timing' )) {
var t = slide.getAttribute( '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);
}
return timings;
}
/**
* Return the number of seconds allocated for presenting
* all slides up to and including this one.
*/
function getTimeAllocated(timings) {
var slides = Reveal.getSlides();
var allocated = 0;
var currentSlide = Reveal.getSlidePastCount();
for (var i in slides.slice(0, currentSlide + 1)) {
allocated += timings[i];
}
return 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 = getTimings();
if (timings !== null) {
pacingTitleEl.style.removeProperty('display');
pacingEl.style.removeProperty('display');
}
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) {
var slideEndTiming = getTimeAllocated(timings) * 1000;
var currentSlide = Reveal.getSlidePastCount();
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 );
}
// Update once directly
_updateTimer();
// Then update every second
setInterval( _updateTimer, 1000 );
function _resetTimer() {
if (timings == null) {
start = new Date();
}
else {
// Reset timer to beginning of current slide
var slideEndTiming = getTimeAllocated(timings) * 1000;
var currentSlide = Reveal.getSlidePastCount();
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;
} );
}
/**
* 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>