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@@ -0,0 +1,792 @@
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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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+
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+ <title>Speaker Notes</title>
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+
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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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+
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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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+
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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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+
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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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+
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+ #connection-status {
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+ position: absolute;
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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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+ z-index: 20;
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+ padding: 30% 20% 20% 20%;
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+ font-size: 18px;
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+ color: #222;
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+ background: #fff;
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+ text-align: center;
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+ box-sizing: border-box;
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+ line-height: 1.4;
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+ }
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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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+
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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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+
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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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+
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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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+
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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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+
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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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+
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+ .speaker-controls-time .label,
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+ .speaker-controls-pace .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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+
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+ .speaker-controls-time, .speaker-controls-pace {
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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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+
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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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+
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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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+ }
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+
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+ .speaker-controls-time .timer,
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+ .speaker-controls-time .clock,
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+ .speaker-controls-time .pacing .hours-value,
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+ .speaker-controls-time .pacing .minutes-value,
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+ .speaker-controls-time .pacing .seconds-value {
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+ font-size: 1.9em;
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+ }
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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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+
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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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+
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+ .speaker-controls-time span.mute {
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+ opacity: 0.3;
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+ }
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+
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+ .speaker-controls-time .pacing-title {
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+ margin-top: 5px;
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+ }
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+
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+ .speaker-controls-time .pacing.ahead {
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+ color: blue;
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+ }
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+
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+ .speaker-controls-time .pacing.on-track {
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+ color: green;
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+ }
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+
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+ .speaker-controls-time .pacing.behind {
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+ color: red;
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+ }
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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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+
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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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+
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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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+
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+ font-size: 1em;
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+ background-color: transparent;
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+
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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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+
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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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+
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+ .clear {
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+ clear: both;
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+ }
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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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+
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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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+
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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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+
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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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+
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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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+
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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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+
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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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+
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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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+
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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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+
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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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+
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+ @media screen and (max-width: 1080px) {
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+ body[data-speaker-layout="default"] #speaker-controls {
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+ font-size: 16px;
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+ }
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+ }
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+
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+ @media screen and (max-width: 900px) {
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+ body[data-speaker-layout="default"] #speaker-controls {
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+ font-size: 14px;
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+ }
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+ }
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+
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+ @media screen and (max-width: 800px) {
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+ body[data-speaker-layout="default"] #speaker-controls {
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+ font-size: 12px;
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+ }
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+ }
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+
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+ </style>
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+</head>
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+
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+<body>
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+
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+<div id="connection-status">Loading speaker view...</div>
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+
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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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+
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+ <h4 class="label pacing-title" style="display: none">Pacing – Time to finish current slide</h4>
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+ <div class="pacing" style="display: none">
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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>
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+
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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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+
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+<script src="../../plugin/markdown/marked.js"></script>
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+<script>
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+
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+ (function() {
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+
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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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+
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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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+
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+ setupLayout();
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+
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+ var connectionStatus = document.querySelector( '#connection-status' );
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+ var connectionTimeout = setTimeout( function() {
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+ connectionStatus.innerHTML = 'Error connecting to main window.<br>Please try closing and reopening the speaker view.';
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+ }, 5000 );
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+
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+ window.addEventListener( 'message', function( event ) {
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+
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+ clearTimeout( connectionTimeout );
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+ connectionStatus.style.display = 'none';
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+
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+ var data = JSON.parse( event.data );
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+
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+ // The overview mode is only useful to the reveal.js instance
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+ // where navigation occurs so we don't sync it
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+ if( data.state ) delete data.state.overview;
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+
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+ // Messages sent by the notes plugin inside of the main window
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+ if( data && data.namespace === 'reveal-notes' ) {
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+ if( data.type === 'connect' ) {
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+ handleConnectMessage( data );
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+ }
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+ else if( data.type === 'state' ) {
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+ handleStateMessage( data );
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+ }
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+ }
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+ // Messages sent by the reveal.js inside of the current slide preview
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+ else if( data && data.namespace === 'reveal' ) {
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+ if( /ready/.test( data.eventName ) ) {
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+ // Send a message back to notify that the handshake is complete
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+ window.opener.postMessage( JSON.stringify({ namespace: 'reveal-notes', type: 'connected'} ), '*' );
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+ }
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+ else if( /slidechanged|fragmentshown|fragmenthidden|paused|resumed/.test( data.eventName ) && currentState !== JSON.stringify( data.state ) ) {
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+
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+ window.opener.postMessage( JSON.stringify({ method: 'setState', args: [ data.state ]} ), '*' );
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+
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+ }
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+ }
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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 is trying to establish a
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+ * connection.
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+ */
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+ function handleConnectMessage( data ) {
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+
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+ if( connected === false ) {
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+ connected = true;
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+
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+ setupIframes( data );
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+ setupKeyboard();
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+ setupNotes();
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+ setupTimer();
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+ }
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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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+
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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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+
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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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+ notesValue.style.whiteSpace = data.whitespace;
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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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+
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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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+ }
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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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+ /**
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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.
|
|
|
+ *
|
|
|
+ * 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() {
|
|
|
+
|
|
|
+ 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( 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>
|
George Cushen