891 lines
No EOL
23 KiB
HTML
891 lines
No EOL
23 KiB
HTML
<!--
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NOTE: You need to build the notes plugin after making changes to this file.
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-->
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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 - Speaker View</title>
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<style>
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body {
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font-family: Helvetica;
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font-size: 18px;
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}
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#current-slide,
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#upcoming-slide,
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#speaker-controls {
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padding: 6px;
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box-sizing: border-box;
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-moz-box-sizing: border-box;
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}
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#current-slide iframe,
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#upcoming-slide iframe {
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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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#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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.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-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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.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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.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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}
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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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.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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opacity: 0.3;
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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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.speaker-controls-time .pacing.ahead {
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color: blue;
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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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.speaker-controls-time .pacing.behind {
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color: red;
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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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@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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@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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@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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</style>
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</head>
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<body>
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<div id="connection-status">Loading speaker view...</div>
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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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<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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<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>
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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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pendingCalls = {},
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lastRevealApiCallId = 0,
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connected = false
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var connectionStatus = document.querySelector( '#connection-status' );
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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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setupLayout();
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let openerOrigin;
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try {
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openerOrigin = window.opener.location.origin;
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}
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catch ( error ) { console.warn( error ) }
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// In order to prevent XSS, the speaker view will only run if its
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// opener has the same origin as itself
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if( window.location.origin !== openerOrigin ) {
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connectionStatus.innerHTML = 'Cross origin error.<br>The speaker window can only be opened from the same origin.';
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return;
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}
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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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window.addEventListener( 'message', function( event ) {
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clearTimeout( connectionTimeout );
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connectionStatus.style.display = 'none';
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var data = JSON.parse( event.data );
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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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// 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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else if( data.type === 'return' ) {
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pendingCalls[data.callId](data.result);
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delete pendingCalls[data.callId];
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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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dispatchStateToMainWindow( data.state );
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}
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}
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} );
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/**
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* Updates the presentation in the main window to match the state
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* of the presentation in the notes window.
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*/
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const dispatchStateToMainWindow = debounce(( state ) => {
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window.opener.postMessage( JSON.stringify({ method: 'setState', args: [ state ]} ), '*' );
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}, 500);
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/**
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* Asynchronously calls the Reveal.js API of the main frame.
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*/
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function callRevealApi( methodName, methodArguments, callback ) {
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var callId = ++lastRevealApiCallId;
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pendingCalls[callId] = callback;
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window.opener.postMessage( JSON.stringify( {
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namespace: 'reveal-notes',
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type: 'call',
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callId: callId,
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methodName: methodName,
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arguments: methodArguments
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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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if( connected === false ) {
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connected = true;
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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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setupHeartbeat();
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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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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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// 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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* Block F5 default handling, it reloads and disconnects
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* the speaker notes window.
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*/
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function setupKeyboard() {
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document.addEventListener( 'keydown', function( event ) {
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if( event.keyCode === 116 || ( event.metaKey && event.keyCode === 82 ) ) {
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event.preventDefault();
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return false;
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}
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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( data ) {
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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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'autoSlide=0',
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'backgroundTransition=none'
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].join( '&' );
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var urlSeparator = /\?/.test(data.url) ? '&' : '?';
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var hash = '#/' + data.state.indexh + '/' + data.state.indexv;
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var currentURL = data.url + urlSeparator + params + '&postMessageEvents=true' + hash;
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var upcomingURL = data.url + urlSeparator + params + '&controls=false' + hash;
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currentSlide = document.createElement( 'iframe' );
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currentSlide.setAttribute( 'width', 1280 );
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currentSlide.setAttribute( 'height', 1024 );
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currentSlide.setAttribute( 'src', currentURL );
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document.querySelector( '#current-slide' ).appendChild( currentSlide );
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upcomingSlide = document.createElement( 'iframe' );
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upcomingSlide.setAttribute( 'width', 640 );
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upcomingSlide.setAttribute( 'height', 512 );
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upcomingSlide.setAttribute( 'src', upcomingURL );
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document.querySelector( '#upcoming-slide' ).appendChild( upcomingSlide );
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}
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/**
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* Setup the notes UI.
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*/
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function setupNotes() {
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notes = document.querySelector( '.speaker-controls-notes' );
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notesValue = document.querySelector( '.speaker-controls-notes .value' );
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}
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/**
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* We send out a heartbeat at all times to ensure we can
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* reconnect with the main presentation window after reloads.
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*/
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function setupHeartbeat() {
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setInterval( () => {
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window.opener.postMessage( JSON.stringify({ namespace: 'reveal-notes', type: 'heartbeat'} ), '*' );
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}, 1000 );
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}
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function getTimings( callback ) {
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callRevealApi( 'getSlidesAttributes', [], function ( slideAttributes ) {
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callRevealApi( 'getConfig', [], function ( config ) {
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var totalTime = config.totalTime;
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var minTimePerSlide = config.minimumTimePerSlide || 0;
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var defaultTiming = config.defaultTiming;
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if ((defaultTiming == null) && (totalTime == null)) {
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callback(null);
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return;
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}
|
||
// Setting totalTime overrides defaultTiming
|
||
if (totalTime) {
|
||
defaultTiming = 0;
|
||
}
|
||
var timings = [];
|
||
for ( var i in slideAttributes ) {
|
||
var slide = slideAttributes[ i ];
|
||
var timing = defaultTiming;
|
||
if( slide.hasOwnProperty( 'data-timing' )) {
|
||
var t = slide[ 'data-timing' ];
|
||
timing = parseInt(t);
|
||
if( isNaN(timing) ) {
|
||
console.warn("Could not parse timing '" + t + "' of slide " + i + "; using default of " + defaultTiming);
|
||
timing = defaultTiming;
|
||
}
|
||
}
|
||
timings.push(timing);
|
||
}
|
||
if ( totalTime ) {
|
||
// After we've allocated time to individual slides, we summarize it and
|
||
// subtract it from the total time
|
||
var remainingTime = totalTime - timings.reduce( function(a, b) { return a + b; }, 0 );
|
||
// The remaining time is divided by the number of slides that have 0 seconds
|
||
// allocated at the moment, giving the average time-per-slide on the remaining slides
|
||
var remainingSlides = (timings.filter( function(x) { return x == 0 }) ).length
|
||
var timePerSlide = Math.round( remainingTime / remainingSlides, 0 )
|
||
// And now we replace every zero-value timing with that average
|
||
timings = timings.map( function(x) { return (x==0 ? timePerSlide : x) } );
|
||
}
|
||
var slidesUnderMinimum = timings.filter( function(x) { return (x < minTimePerSlide) } ).length
|
||
if ( slidesUnderMinimum ) {
|
||
message = "The pacing time for " + slidesUnderMinimum + " slide(s) is under the configured minimum of " + minTimePerSlide + " seconds. Check the data-timing attribute on individual slides, or consider increasing the totalTime or minimumTimePerSlide configuration options (or removing some slides).";
|
||
alert(message);
|
||
}
|
||
callback( timings );
|
||
} );
|
||
} );
|
||
|
||
}
|
||
|
||
/**
|
||
* Return the number of seconds allocated for presenting
|
||
* all slides up to and including this one.
|
||
*/
|
||
function getTimeAllocated( timings, callback ) {
|
||
|
||
callRevealApi( 'getSlidePastCount', [], function ( currentSlide ) {
|
||
var allocated = 0;
|
||
for (var i in timings.slice(0, currentSlide + 1)) {
|
||
allocated += timings[i];
|
||
}
|
||
callback( allocated );
|
||
} );
|
||
|
||
}
|
||
|
||
/**
|
||
* Create the timer and clock and start updating them
|
||
* at an interval.
|
||
*/
|
||
function setupTimer() {
|
||
|
||
var start = new Date(),
|
||
timeEl = document.querySelector( '.speaker-controls-time' ),
|
||
clockEl = timeEl.querySelector( '.clock-value' ),
|
||
hoursEl = timeEl.querySelector( '.hours-value' ),
|
||
minutesEl = timeEl.querySelector( '.minutes-value' ),
|
||
secondsEl = timeEl.querySelector( '.seconds-value' ),
|
||
pacingTitleEl = timeEl.querySelector( '.pacing-title' ),
|
||
pacingEl = timeEl.querySelector( '.pacing' ),
|
||
pacingHoursEl = pacingEl.querySelector( '.hours-value' ),
|
||
pacingMinutesEl = pacingEl.querySelector( '.minutes-value' ),
|
||
pacingSecondsEl = pacingEl.querySelector( '.seconds-value' );
|
||
|
||
var timings = null;
|
||
getTimings( function ( _timings ) {
|
||
|
||
timings = _timings;
|
||
if (_timings !== null) {
|
||
pacingTitleEl.style.removeProperty('display');
|
||
pacingEl.style.removeProperty('display');
|
||
}
|
||
|
||
// Update once directly
|
||
_updateTimer();
|
||
|
||
// Then update every second
|
||
setInterval( _updateTimer, 1000 );
|
||
|
||
} );
|
||
|
||
|
||
function _resetTimer() {
|
||
|
||
if (timings == null) {
|
||
start = new Date();
|
||
_updateTimer();
|
||
}
|
||
else {
|
||
// Reset timer to beginning of current slide
|
||
getTimeAllocated( timings, function ( slideEndTimingSeconds ) {
|
||
var slideEndTiming = slideEndTimingSeconds * 1000;
|
||
callRevealApi( 'getSlidePastCount', [], function ( currentSlide ) {
|
||
var currentSlideTiming = timings[currentSlide] * 1000;
|
||
var previousSlidesTiming = slideEndTiming - currentSlideTiming;
|
||
var now = new Date();
|
||
start = new Date(now.getTime() - previousSlidesTiming);
|
||
_updateTimer();
|
||
} );
|
||
} );
|
||
}
|
||
|
||
}
|
||
|
||
timeEl.addEventListener( 'click', function() {
|
||
_resetTimer();
|
||
return false;
|
||
} );
|
||
|
||
function _displayTime( hrEl, minEl, secEl, time) {
|
||
|
||
var sign = Math.sign(time) == -1 ? "-" : "";
|
||
time = Math.abs(Math.round(time / 1000));
|
||
var seconds = time % 60;
|
||
var minutes = Math.floor( time / 60 ) % 60 ;
|
||
var hours = Math.floor( time / ( 60 * 60 )) ;
|
||
hrEl.innerHTML = sign + zeroPadInteger( hours );
|
||
if (hours == 0) {
|
||
hrEl.classList.add( 'mute' );
|
||
}
|
||
else {
|
||
hrEl.classList.remove( 'mute' );
|
||
}
|
||
minEl.innerHTML = ':' + zeroPadInteger( minutes );
|
||
if (hours == 0 && minutes == 0) {
|
||
minEl.classList.add( 'mute' );
|
||
}
|
||
else {
|
||
minEl.classList.remove( 'mute' );
|
||
}
|
||
secEl.innerHTML = ':' + zeroPadInteger( seconds );
|
||
}
|
||
|
||
function _updateTimer() {
|
||
|
||
var diff, hours, minutes, seconds,
|
||
now = new Date();
|
||
|
||
diff = now.getTime() - start.getTime();
|
||
|
||
clockEl.innerHTML = now.toLocaleTimeString( 'en-US', { hour12: true, hour: '2-digit', minute:'2-digit' } );
|
||
_displayTime( hoursEl, minutesEl, secondsEl, diff );
|
||
if (timings !== null) {
|
||
_updatePacing(diff);
|
||
}
|
||
|
||
}
|
||
|
||
function _updatePacing(diff) {
|
||
|
||
getTimeAllocated( timings, function ( slideEndTimingSeconds ) {
|
||
var slideEndTiming = slideEndTimingSeconds * 1000;
|
||
|
||
callRevealApi( 'getSlidePastCount', [], function ( currentSlide ) {
|
||
var currentSlideTiming = timings[currentSlide] * 1000;
|
||
var timeLeftCurrentSlide = slideEndTiming - diff;
|
||
if (timeLeftCurrentSlide < 0) {
|
||
pacingEl.className = 'pacing behind';
|
||
}
|
||
else if (timeLeftCurrentSlide < currentSlideTiming) {
|
||
pacingEl.className = 'pacing on-track';
|
||
}
|
||
else {
|
||
pacingEl.className = 'pacing ahead';
|
||
}
|
||
_displayTime( pacingHoursEl, pacingMinutesEl, pacingSecondsEl, timeLeftCurrentSlide );
|
||
} );
|
||
} );
|
||
}
|
||
|
||
}
|
||
|
||
/**
|
||
* Sets up the speaker view layout and layout selector.
|
||
*/
|
||
function setupLayout() {
|
||
|
||
layoutDropdown = document.querySelector( '.speaker-layout-dropdown' );
|
||
layoutLabel = document.querySelector( '.speaker-layout-label' );
|
||
|
||
// Render the list of available layouts
|
||
for( var id in SPEAKER_LAYOUTS ) {
|
||
var option = document.createElement( 'option' );
|
||
option.setAttribute( 'value', id );
|
||
option.textContent = SPEAKER_LAYOUTS[ id ];
|
||
layoutDropdown.appendChild( option );
|
||
}
|
||
|
||
// Monitor the dropdown for changes
|
||
layoutDropdown.addEventListener( 'change', function( event ) {
|
||
|
||
setLayout( layoutDropdown.value );
|
||
|
||
}, false );
|
||
|
||
// Restore any currently persisted layout
|
||
setLayout( getLayout() );
|
||
|
||
}
|
||
|
||
/**
|
||
* Sets a new speaker view layout. The layout is persisted
|
||
* in local storage.
|
||
*/
|
||
function setLayout( value ) {
|
||
|
||
var title = SPEAKER_LAYOUTS[ value ];
|
||
|
||
layoutLabel.innerHTML = 'Layout' + ( title ? ( ': ' + title ) : '' );
|
||
layoutDropdown.value = value;
|
||
|
||
document.body.setAttribute( 'data-speaker-layout', value );
|
||
|
||
// Persist locally
|
||
if( supportsLocalStorage() ) {
|
||
window.localStorage.setItem( 'reveal-speaker-layout', value );
|
||
}
|
||
|
||
}
|
||
|
||
/**
|
||
* Returns the ID of the most recently set speaker layout
|
||
* or our default layout if none has been set.
|
||
*/
|
||
function getLayout() {
|
||
|
||
if( supportsLocalStorage() ) {
|
||
var layout = window.localStorage.getItem( 'reveal-speaker-layout' );
|
||
if( layout ) {
|
||
return layout;
|
||
}
|
||
}
|
||
|
||
// Default to the first record in the layouts hash
|
||
for( var id in SPEAKER_LAYOUTS ) {
|
||
return id;
|
||
}
|
||
|
||
}
|
||
|
||
function supportsLocalStorage() {
|
||
|
||
try {
|
||
localStorage.setItem('test', 'test');
|
||
localStorage.removeItem('test');
|
||
return true;
|
||
}
|
||
catch( e ) {
|
||
return false;
|
||
}
|
||
|
||
}
|
||
|
||
function zeroPadInteger( num ) {
|
||
|
||
var str = '00' + parseInt( num );
|
||
return str.substring( str.length - 2 );
|
||
|
||
}
|
||
|
||
/**
|
||
* Limits the frequency at which a function can be called.
|
||
*/
|
||
function debounce( fn, ms ) {
|
||
|
||
var lastTime = 0,
|
||
timeout;
|
||
|
||
return function() {
|
||
|
||
var args = arguments;
|
||
var context = this;
|
||
|
||
clearTimeout( timeout );
|
||
|
||
var timeSinceLastCall = Date.now() - lastTime;
|
||
if( timeSinceLastCall > ms ) {
|
||
fn.apply( context, args );
|
||
lastTime = Date.now();
|
||
}
|
||
else {
|
||
timeout = setTimeout( function() {
|
||
fn.apply( context, args );
|
||
lastTime = Date.now();
|
||
}, ms - timeSinceLastCall );
|
||
}
|
||
|
||
}
|
||
|
||
}
|
||
|
||
})();
|
||
|
||
</script>
|
||
</body>
|
||
</html> |