| 1 | <!-- |
| 2 | NOTE: You need to build the notes plugin after making changes to this file. |
| 3 | --> |
| 4 | <html lang="en"> |
| 5 | <head> |
| 6 | <meta charset="utf-8"> |
| 7 | |
| 8 | <title>reveal.js - Speaker View</title> |
| 9 | |
| 10 | <style> |
| 11 | body { |
| 12 | font-family: Helvetica; |
| 13 | font-size: 18px; |
| 14 | } |
| 15 | |
| 16 | #current-slide, |
| 17 | #upcoming-slide, |
| 18 | #speaker-controls { |
| 19 | padding: 6px; |
| 20 | box-sizing: border-box; |
| 21 | -moz-box-sizing: border-box; |
| 22 | } |
| 23 | |
| 24 | #current-slide iframe, |
| 25 | #upcoming-slide iframe { |
| 26 | width: 100%; |
| 27 | height: 100%; |
| 28 | border: 1px solid #ddd; |
| 29 | } |
| 30 | |
| 31 | #current-slide .label, |
| 32 | #upcoming-slide .label { |
| 33 | position: absolute; |
| 34 | top: 10px; |
| 35 | left: 10px; |
| 36 | z-index: 2; |
| 37 | } |
| 38 | |
| 39 | #connection-status { |
| 40 | position: absolute; |
| 41 | top: 0; |
| 42 | left: 0; |
| 43 | width: 100%; |
| 44 | height: 100%; |
| 45 | z-index: 20; |
| 46 | padding: 30% 20% 20% 20%; |
| 47 | font-size: 18px; |
| 48 | color: #222; |
| 49 | background: #fff; |
| 50 | text-align: center; |
| 51 | box-sizing: border-box; |
| 52 | line-height: 1.4; |
| 53 | } |
| 54 | |
| 55 | .overlay-element { |
| 56 | height: 34px; |
| 57 | line-height: 34px; |
| 58 | padding: 0 10px; |
| 59 | text-shadow: none; |
| 60 | background: rgba( 220, 220, 220, 0.8 ); |
| 61 | color: #222; |
| 62 | font-size: 14px; |
| 63 | } |
| 64 | |
| 65 | .overlay-element.interactive:hover { |
| 66 | background: rgba( 220, 220, 220, 1 ); |
| 67 | } |
| 68 | |
| 69 | #current-slide { |
| 70 | position: absolute; |
| 71 | width: 60%; |
| 72 | height: 100%; |
| 73 | top: 0; |
| 74 | left: 0; |
| 75 | padding-right: 0; |
| 76 | } |
| 77 | |
| 78 | #upcoming-slide { |
| 79 | position: absolute; |
| 80 | width: 40%; |
| 81 | height: 40%; |
| 82 | right: 0; |
| 83 | top: 0; |
| 84 | } |
| 85 | |
| 86 | /* Speaker controls */ |
| 87 | #speaker-controls { |
| 88 | position: absolute; |
| 89 | top: 40%; |
| 90 | right: 0; |
| 91 | width: 40%; |
| 92 | height: 60%; |
| 93 | overflow: auto; |
| 94 | font-size: 18px; |
| 95 | } |
| 96 | |
| 97 | .speaker-controls-time.hidden, |
| 98 | .speaker-controls-notes.hidden { |
| 99 | display: none; |
| 100 | } |
| 101 | |
| 102 | .speaker-controls-time .label, |
| 103 | .speaker-controls-pace .label, |
| 104 | .speaker-controls-notes .label { |
| 105 | text-transform: uppercase; |
| 106 | font-weight: normal; |
| 107 | font-size: 0.66em; |
| 108 | color: #666; |
| 109 | margin: 0; |
| 110 | } |
| 111 | |
| 112 | .speaker-controls-time, .speaker-controls-pace { |
| 113 | border-bottom: 1px solid rgba( 200, 200, 200, 0.5 ); |
| 114 | margin-bottom: 10px; |
| 115 | padding: 10px 16px; |
| 116 | padding-bottom: 20px; |
| 117 | cursor: pointer; |
| 118 | } |
| 119 | |
| 120 | .speaker-controls-time .reset-button { |
| 121 | opacity: 0; |
| 122 | float: right; |
| 123 | color: #666; |
| 124 | text-decoration: none; |
| 125 | } |
| 126 | .speaker-controls-time:hover .reset-button { |
| 127 | opacity: 1; |
| 128 | } |
| 129 | |
| 130 | .speaker-controls-time .timer, |
| 131 | .speaker-controls-time .clock { |
| 132 | width: 50%; |
| 133 | } |
| 134 | |
| 135 | .speaker-controls-time .timer, |
| 136 | .speaker-controls-time .clock, |
| 137 | .speaker-controls-time .pacing .hours-value, |
| 138 | .speaker-controls-time .pacing .minutes-value, |
| 139 | .speaker-controls-time .pacing .seconds-value { |
| 140 | font-size: 1.9em; |
| 141 | } |
| 142 | |
| 143 | .speaker-controls-time .timer { |
| 144 | float: left; |
| 145 | } |
| 146 | |
| 147 | .speaker-controls-time .clock { |
| 148 | float: right; |
| 149 | text-align: right; |
| 150 | } |
| 151 | |
| 152 | .speaker-controls-time span.mute { |
| 153 | opacity: 0.3; |
| 154 | } |
| 155 | |
| 156 | .speaker-controls-time .pacing-title { |
| 157 | margin-top: 5px; |
| 158 | } |
| 159 | |
| 160 | .speaker-controls-time .pacing.ahead { |
| 161 | color: blue; |
| 162 | } |
| 163 | |
| 164 | .speaker-controls-time .pacing.on-track { |
| 165 | color: green; |
| 166 | } |
| 167 | |
| 168 | .speaker-controls-time .pacing.behind { |
| 169 | color: red; |
| 170 | } |
| 171 | |
| 172 | .speaker-controls-notes { |
| 173 | padding: 10px 16px; |
| 174 | } |
| 175 | |
| 176 | .speaker-controls-notes .value { |
| 177 | margin-top: 5px; |
| 178 | line-height: 1.4; |
| 179 | font-size: 1.2em; |
| 180 | } |
| 181 | |
| 182 | /* Layout selector */ |
| 183 | #speaker-layout { |
| 184 | position: absolute; |
| 185 | top: 10px; |
| 186 | right: 10px; |
| 187 | color: #222; |
| 188 | z-index: 10; |
| 189 | } |
| 190 | #speaker-layout select { |
| 191 | position: absolute; |
| 192 | width: 100%; |
| 193 | height: 100%; |
| 194 | top: 0; |
| 195 | left: 0; |
| 196 | border: 0; |
| 197 | box-shadow: 0; |
| 198 | cursor: pointer; |
| 199 | opacity: 0; |
| 200 | |
| 201 | font-size: 1em; |
| 202 | background-color: transparent; |
| 203 | |
| 204 | -moz-appearance: none; |
| 205 | -webkit-appearance: none; |
| 206 | -webkit-tap-highlight-color: rgba(0, 0, 0, 0); |
| 207 | } |
| 208 | |
| 209 | #speaker-layout select:focus { |
| 210 | outline: none; |
| 211 | box-shadow: none; |
| 212 | } |
| 213 | |
| 214 | .clear { |
| 215 | clear: both; |
| 216 | } |
| 217 | |
| 218 | /* Speaker layout: Wide */ |
| 219 | body[data-speaker-layout="wide"] #current-slide, |
| 220 | body[data-speaker-layout="wide"] #upcoming-slide { |
| 221 | width: 50%; |
| 222 | height: 45%; |
| 223 | padding: 6px; |
| 224 | } |
| 225 | |
| 226 | body[data-speaker-layout="wide"] #current-slide { |
| 227 | top: 0; |
| 228 | left: 0; |
| 229 | } |
| 230 | |
| 231 | body[data-speaker-layout="wide"] #upcoming-slide { |
| 232 | top: 0; |
| 233 | left: 50%; |
| 234 | } |
| 235 | |
| 236 | body[data-speaker-layout="wide"] #speaker-controls { |
| 237 | top: 45%; |
| 238 | left: 0; |
| 239 | width: 100%; |
| 240 | height: 50%; |
| 241 | font-size: 1.25em; |
| 242 | } |
| 243 | |
| 244 | /* Speaker layout: Tall */ |
| 245 | body[data-speaker-layout="tall"] #current-slide, |
| 246 | body[data-speaker-layout="tall"] #upcoming-slide { |
| 247 | width: 45%; |
| 248 | height: 50%; |
| 249 | padding: 6px; |
| 250 | } |
| 251 | |
| 252 | body[data-speaker-layout="tall"] #current-slide { |
| 253 | top: 0; |
| 254 | left: 0; |
| 255 | } |
| 256 | |
| 257 | body[data-speaker-layout="tall"] #upcoming-slide { |
| 258 | top: 50%; |
| 259 | left: 0; |
| 260 | } |
| 261 | |
| 262 | body[data-speaker-layout="tall"] #speaker-controls { |
| 263 | padding-top: 40px; |
| 264 | top: 0; |
| 265 | left: 45%; |
| 266 | width: 55%; |
| 267 | height: 100%; |
| 268 | font-size: 1.25em; |
| 269 | } |
| 270 | |
| 271 | /* Speaker layout: Notes only */ |
| 272 | body[data-speaker-layout="notes-only"] #current-slide, |
| 273 | body[data-speaker-layout="notes-only"] #upcoming-slide { |
| 274 | display: none; |
| 275 | } |
| 276 | |
| 277 | body[data-speaker-layout="notes-only"] #speaker-controls { |
| 278 | padding-top: 40px; |
| 279 | top: 0; |
| 280 | left: 0; |
| 281 | width: 100%; |
| 282 | height: 100%; |
| 283 | font-size: 1.25em; |
| 284 | } |
| 285 | |
| 286 | @media screen and (max-width: 1080px) { |
| 287 | body[data-speaker-layout="default"] #speaker-controls { |
| 288 | font-size: 16px; |
| 289 | } |
| 290 | } |
| 291 | |
| 292 | @media screen and (max-width: 900px) { |
| 293 | body[data-speaker-layout="default"] #speaker-controls { |
| 294 | font-size: 14px; |
| 295 | } |
| 296 | } |
| 297 | |
| 298 | @media screen and (max-width: 800px) { |
| 299 | body[data-speaker-layout="default"] #speaker-controls { |
| 300 | font-size: 12px; |
| 301 | } |
| 302 | } |
| 303 | |
| 304 | </style> |
| 305 | </head> |
| 306 | |
| 307 | <body> |
| 308 | |
| 309 | <div id="connection-status">Loading speaker view...</div> |
| 310 | |
| 311 | <div id="current-slide"></div> |
| 312 | <div id="upcoming-slide"><span class="overlay-element label">Upcoming</span></div> |
| 313 | <div id="speaker-controls"> |
| 314 | <div class="speaker-controls-time"> |
| 315 | <h4 class="label">Time <span class="reset-button">Click to Reset</span></h4> |
| 316 | <div class="clock"> |
| 317 | <span class="clock-value">0:00 AM</span> |
| 318 | </div> |
| 319 | <div class="timer"> |
| 320 | <span class="hours-value">00</span><span class="minutes-value">:00</span><span class="seconds-value">:00</span> |
| 321 | </div> |
| 322 | <div class="clear"></div> |
| 323 | |
| 324 | <h4 class="label pacing-title" style="display: none">Pacing – Time to finish current slide</h4> |
| 325 | <div class="pacing" style="display: none"> |
| 326 | <span class="hours-value">00</span><span class="minutes-value">:00</span><span class="seconds-value">:00</span> |
| 327 | </div> |
| 328 | </div> |
| 329 | |
| 330 | <div class="speaker-controls-notes hidden"> |
| 331 | <h4 class="label">Notes</h4> |
| 332 | <div class="value"></div> |
| 333 | </div> |
| 334 | </div> |
| 335 | <div id="speaker-layout" class="overlay-element interactive"> |
| 336 | <span class="speaker-layout-label"></span> |
| 337 | <select class="speaker-layout-dropdown"></select> |
| 338 | </div> |
| 339 | |
| 340 | <script> |
| 341 | |
| 342 | (function() { |
| 343 | |
| 344 | var notes, |
| 345 | notesValue, |
| 346 | currentState, |
| 347 | currentSlide, |
| 348 | upcomingSlide, |
| 349 | layoutLabel, |
| 350 | layoutDropdown, |
| 351 | pendingCalls = {}, |
| 352 | lastRevealApiCallId = 0, |
| 353 | connected = false |
| 354 | |
| 355 | var connectionStatus = document.querySelector( '#connection-status' ); |
| 356 | |
| 357 | var SPEAKER_LAYOUTS = { |
| 358 | 'default': 'Default', |
| 359 | 'wide': 'Wide', |
| 360 | 'tall': 'Tall', |
| 361 | 'notes-only': 'Notes only' |
| 362 | }; |
| 363 | |
| 364 | setupLayout(); |
| 365 | |
| 366 | let openerOrigin; |
| 367 | |
| 368 | try { |
| 369 | openerOrigin = window.opener.location.origin; |
| 370 | } |
| 371 | catch ( error ) { console.warn( error ) } |
| 372 | |
| 373 | // In order to prevent XSS, the speaker view will only run if its |
| 374 | // opener has the same origin as itself |
| 375 | if( window.location.origin !== openerOrigin ) { |
| 376 | connectionStatus.innerHTML = 'Cross origin error.<br>The speaker window can only be opened from the same origin.'; |
| 377 | return; |
| 378 | } |
| 379 | |
| 380 | var connectionTimeout = setTimeout( function() { |
| 381 | connectionStatus.innerHTML = 'Error connecting to main window.<br>Please try closing and reopening the speaker view.'; |
| 382 | }, 5000 ); |
| 383 | |
| 384 | window.addEventListener( 'message', function( event ) { |
| 385 | |
| 386 | // Validate the origin of all messages to avoid parsing messages |
| 387 | // that aren't meant for us. Ignore when running off file:// so |
| 388 | // that the speaker view continues to work without a web server. |
| 389 | if( window.location.origin !== event.origin && window.location.origin !== 'file://' ) { |
| 390 | return |
| 391 | } |
| 392 | |
| 393 | clearTimeout( connectionTimeout ); |
| 394 | connectionStatus.style.display = 'none'; |
| 395 | |
| 396 | var data = JSON.parse( event.data ); |
| 397 | |
| 398 | // The overview mode is only useful to the reveal.js instance |
| 399 | // where navigation occurs so we don't sync it |
| 400 | if( data.state ) delete data.state.overview; |
| 401 | |
| 402 | // Messages sent by the notes plugin inside of the main window |
| 403 | if( data && data.namespace === 'reveal-notes' ) { |
| 404 | if( data.type === 'connect' ) { |
| 405 | handleConnectMessage( data ); |
| 406 | } |
| 407 | else if( data.type === 'state' ) { |
| 408 | handleStateMessage( data ); |
| 409 | } |
| 410 | else if( data.type === 'return' ) { |
| 411 | pendingCalls[data.callId](data.result); |
| 412 | delete pendingCalls[data.callId]; |
| 413 | } |
| 414 | } |
| 415 | // Messages sent by the reveal.js inside of the current slide preview |
| 416 | else if( data && data.namespace === 'reveal' ) { |
| 417 | const supportedEvents = [ |
| 418 | 'slidechanged', |
| 419 | 'fragmentshown', |
| 420 | 'fragmenthidden', |
| 421 | 'paused', |
| 422 | 'resumed', |
| 423 | 'previewiframe', |
| 424 | 'previewimage', |
| 425 | 'previewvideo', |
| 426 | 'closeoverlay' |
| 427 | ]; |
| 428 | |
| 429 | if( /ready/.test( data.eventName ) ) { |
| 430 | // Send a message back to notify that the handshake is complete |
| 431 | window.opener.postMessage( JSON.stringify({ namespace: 'reveal-notes', type: 'connected'} ), '*' ); |
| 432 | } |
| 433 | else if( supportedEvents.includes( data.eventName ) && currentState !== JSON.stringify( data.state ) ) { |
| 434 | dispatchStateToMainWindow( data.state ); |
| 435 | } |
| 436 | } |
| 437 | |
| 438 | } ); |
| 439 | |
| 440 | /** |
| 441 | * Updates the presentation in the main window to match the state |
| 442 | * of the presentation in the notes window. |
| 443 | */ |
| 444 | const dispatchStateToMainWindow = debounce(( state ) => { |
| 445 | window.opener.postMessage( JSON.stringify({ method: 'setState', args: [ state ]} ), '*' ); |
| 446 | }, 500); |
| 447 | |
| 448 | /** |
| 449 | * Asynchronously calls the Reveal.js API of the main frame. |
| 450 | */ |
| 451 | function callRevealApi( methodName, methodArguments, callback ) { |
| 452 | |
| 453 | var callId = ++lastRevealApiCallId; |
| 454 | pendingCalls[callId] = callback; |
| 455 | window.opener.postMessage( JSON.stringify( { |
| 456 | namespace: 'reveal-notes', |
| 457 | type: 'call', |
| 458 | callId: callId, |
| 459 | methodName: methodName, |
| 460 | arguments: methodArguments |
| 461 | } ), '*' ); |
| 462 | |
| 463 | } |
| 464 | |
| 465 | /** |
| 466 | * Called when the main window is trying to establish a |
| 467 | * connection. |
| 468 | */ |
| 469 | function handleConnectMessage( data ) { |
| 470 | |
| 471 | if( connected === false ) { |
| 472 | connected = true; |
| 473 | |
| 474 | setupIframes( data ); |
| 475 | setupKeyboard(); |
| 476 | setupNotes(); |
| 477 | setupTimer(); |
| 478 | setupHeartbeat(); |
| 479 | } |
| 480 | |
| 481 | } |
| 482 | |
| 483 | /** |
| 484 | * Called when the main window sends an updated state. |
| 485 | */ |
| 486 | function handleStateMessage( data ) { |
| 487 | |
| 488 | // Store the most recently set state to avoid circular loops |
| 489 | // applying the same state |
| 490 | currentState = JSON.stringify( data.state ); |
| 491 | |
| 492 | // No need for updating the notes in case of fragment changes |
| 493 | if ( data.notes ) { |
| 494 | notes.classList.remove( 'hidden' ); |
| 495 | notesValue.style.whiteSpace = data.whitespace; |
| 496 | if( data.markdown ) { |
| 497 | notesValue.innerHTML = marked.parse( data.notes ); |
| 498 | } |
| 499 | else { |
| 500 | notesValue.innerHTML = data.notes; |
| 501 | } |
| 502 | } |
| 503 | else { |
| 504 | notes.classList.add( 'hidden' ); |
| 505 | } |
| 506 | |
| 507 | // Don't show lightboxes in the upcoming slide |
| 508 | const { previewVideo, previewImage, previewIframe, ...upcomingState } = data.state; |
| 509 | |
| 510 | // Update the note slides |
| 511 | currentSlide.contentWindow.postMessage( JSON.stringify({ method: 'setState', args: [ data.state ] }), '*' ); |
| 512 | upcomingSlide.contentWindow.postMessage( JSON.stringify({ method: 'setState', args: [ upcomingState ] }), '*' ); |
| 513 | upcomingSlide.contentWindow.postMessage( JSON.stringify({ method: 'next' }), '*' ); |
| 514 | |
| 515 | } |
| 516 | |
| 517 | // Limit to max one state update per X ms |
| 518 | handleStateMessage = debounce( handleStateMessage, 200 ); |
| 519 | |
| 520 | /** |
| 521 | * Forward keyboard events to the current slide window. |
| 522 | * This enables keyboard events to work even if focus |
| 523 | * isn't set on the current slide iframe. |
| 524 | * |
| 525 | * Block F5 default handling, it reloads and disconnects |
| 526 | * the speaker notes window. |
| 527 | */ |
| 528 | function setupKeyboard() { |
| 529 | |
| 530 | document.addEventListener( 'keydown', function( event ) { |
| 531 | if( event.keyCode === 116 || ( event.metaKey && event.keyCode === 82 ) ) { |
| 532 | event.preventDefault(); |
| 533 | return false; |
| 534 | } |
| 535 | currentSlide.contentWindow.postMessage( JSON.stringify({ method: 'triggerKey', args: [ event.keyCode ] }), '*' ); |
| 536 | } ); |
| 537 | |
| 538 | } |
| 539 | |
| 540 | /** |
| 541 | * Creates the preview iframes. |
| 542 | */ |
| 543 | function setupIframes( data ) { |
| 544 | |
| 545 | var params = [ |
| 546 | 'receiver', |
| 547 | 'progress=false', |
| 548 | 'history=false', |
| 549 | 'transition=none', |
| 550 | 'autoSlide=0', |
| 551 | 'backgroundTransition=none' |
| 552 | ].join( '&' ); |
| 553 | |
| 554 | var urlSeparator = /\?/.test(data.url) ? '&' : '?'; |
| 555 | var hash = '#/' + data.state.indexh + '/' + data.state.indexv; |
| 556 | var currentURL = data.url + urlSeparator + params + '&scrollActivationWidth=false&postMessageEvents=true' + hash; |
| 557 | var upcomingURL = data.url + urlSeparator + params + '&scrollActivationWidth=false&controls=false' + hash; |
| 558 | |
| 559 | currentSlide = document.createElement( 'iframe' ); |
| 560 | currentSlide.setAttribute( 'width', 1280 ); |
| 561 | currentSlide.setAttribute( 'height', 1024 ); |
| 562 | currentSlide.setAttribute( 'src', currentURL ); |
| 563 | document.querySelector( '#current-slide' ).appendChild( currentSlide ); |
| 564 | |
| 565 | upcomingSlide = document.createElement( 'iframe' ); |
| 566 | upcomingSlide.setAttribute( 'width', 640 ); |
| 567 | upcomingSlide.setAttribute( 'height', 512 ); |
| 568 | upcomingSlide.setAttribute( 'src', upcomingURL ); |
| 569 | document.querySelector( '#upcoming-slide' ).appendChild( upcomingSlide ); |
| 570 | |
| 571 | } |
| 572 | |
| 573 | /** |
| 574 | * Setup the notes UI. |
| 575 | */ |
| 576 | function setupNotes() { |
| 577 | |
| 578 | notes = document.querySelector( '.speaker-controls-notes' ); |
| 579 | notesValue = document.querySelector( '.speaker-controls-notes .value' ); |
| 580 | |
| 581 | } |
| 582 | |
| 583 | /** |
| 584 | * We send out a heartbeat at all times to ensure we can |
| 585 | * reconnect with the main presentation window after reloads. |
| 586 | */ |
| 587 | function setupHeartbeat() { |
| 588 | |
| 589 | setInterval( () => { |
| 590 | window.opener.postMessage( JSON.stringify({ namespace: 'reveal-notes', type: 'heartbeat'} ), '*' ); |
| 591 | }, 1000 ); |
| 592 | |
| 593 | } |
| 594 | |
| 595 | function getTimings( callback ) { |
| 596 | |
| 597 | callRevealApi( 'getSlidesAttributes', [], function ( slideAttributes ) { |
| 598 | callRevealApi( 'getConfig', [], function ( config ) { |
| 599 | var totalTime = config.totalTime; |
| 600 | var minTimePerSlide = config.minimumTimePerSlide || 0; |
| 601 | var defaultTiming = config.defaultTiming; |
| 602 | if ((defaultTiming == null) && (totalTime == null)) { |
| 603 | callback(null); |
| 604 | return; |
| 605 | } |
| 606 | // Setting totalTime overrides defaultTiming |
| 607 | if (totalTime) { |
| 608 | defaultTiming = 0; |
| 609 | } |
| 610 | var timings = []; |
| 611 | for ( var i in slideAttributes ) { |
| 612 | var slide = slideAttributes[ i ]; |
| 613 | var timing = defaultTiming; |
| 614 | if( slide.hasOwnProperty( 'data-timing' )) { |
| 615 | var t = slide[ 'data-timing' ]; |
| 616 | timing = parseInt(t); |
| 617 | if( isNaN(timing) ) { |
| 618 | console.warn("Could not parse timing '" + t + "' of slide " + i + "; using default of " + defaultTiming); |
| 619 | timing = defaultTiming; |
| 620 | } |
| 621 | } |
| 622 | timings.push(timing); |
| 623 | } |
| 624 | if ( totalTime ) { |
| 625 | // After we've allocated time to individual slides, we summarize it and |
| 626 | // subtract it from the total time |
| 627 | var remainingTime = totalTime - timings.reduce( function(a, b) { return a + b; }, 0 ); |
| 628 | // The remaining time is divided by the number of slides that have 0 seconds |
| 629 | // allocated at the moment, giving the average time-per-slide on the remaining slides |
| 630 | var remainingSlides = (timings.filter( function(x) { return x == 0 }) ).length |
| 631 | var timePerSlide = Math.round( remainingTime / remainingSlides, 0 ) |
| 632 | // And now we replace every zero-value timing with that average |
| 633 | timings = timings.map( function(x) { return (x==0 ? timePerSlide : x) } ); |
| 634 | } |
| 635 | var slidesUnderMinimum = timings.filter( function(x) { return (x < minTimePerSlide) } ).length |
| 636 | if ( slidesUnderMinimum ) { |
| 637 | 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)."; |
| 638 | alert(message); |
| 639 | } |
| 640 | callback( timings ); |
| 641 | } ); |
| 642 | } ); |
| 643 | |
| 644 | } |
| 645 | |
| 646 | /** |
| 647 | * Return the number of seconds allocated for presenting |
| 648 | * all slides up to and including this one. |
| 649 | */ |
| 650 | function getTimeAllocated( timings, callback ) { |
| 651 | |
| 652 | callRevealApi( 'getSlidePastCount', [], function ( currentSlide ) { |
| 653 | var allocated = 0; |
| 654 | for (var i in timings.slice(0, currentSlide + 1)) { |
| 655 | allocated += timings[i]; |
| 656 | } |
| 657 | callback( allocated ); |
| 658 | } ); |
| 659 | |
| 660 | } |
| 661 | |
| 662 | /** |
| 663 | * Create the timer and clock and start updating them |
| 664 | * at an interval. |
| 665 | */ |
| 666 | function setupTimer() { |
| 667 | |
| 668 | var start = new Date(), |
| 669 | timeEl = document.querySelector( '.speaker-controls-time' ), |
| 670 | clockEl = timeEl.querySelector( '.clock-value' ), |
| 671 | hoursEl = timeEl.querySelector( '.hours-value' ), |
| 672 | minutesEl = timeEl.querySelector( '.minutes-value' ), |
| 673 | secondsEl = timeEl.querySelector( '.seconds-value' ), |
| 674 | pacingTitleEl = timeEl.querySelector( '.pacing-title' ), |
| 675 | pacingEl = timeEl.querySelector( '.pacing' ), |
| 676 | pacingHoursEl = pacingEl.querySelector( '.hours-value' ), |
| 677 | pacingMinutesEl = pacingEl.querySelector( '.minutes-value' ), |
| 678 | pacingSecondsEl = pacingEl.querySelector( '.seconds-value' ); |
| 679 | |
| 680 | var timings = null; |
| 681 | getTimings( function ( _timings ) { |
| 682 | |
| 683 | timings = _timings; |
| 684 | if (_timings !== null) { |
| 685 | pacingTitleEl.style.removeProperty('display'); |
| 686 | pacingEl.style.removeProperty('display'); |
| 687 | } |
| 688 | |
| 689 | // Update once directly |
| 690 | _updateTimer(); |
| 691 | |
| 692 | // Then update every second |
| 693 | setInterval( _updateTimer, 1000 ); |
| 694 | |
| 695 | } ); |
| 696 | |
| 697 | |
| 698 | function _resetTimer() { |
| 699 | |
| 700 | if (timings == null) { |
| 701 | start = new Date(); |
| 702 | _updateTimer(); |
| 703 | } |
| 704 | else { |
| 705 | // Reset timer to beginning of current slide |
| 706 | getTimeAllocated( timings, function ( slideEndTimingSeconds ) { |
| 707 | var slideEndTiming = slideEndTimingSeconds * 1000; |
| 708 | callRevealApi( 'getSlidePastCount', [], function ( currentSlide ) { |
| 709 | var currentSlideTiming = timings[currentSlide] * 1000; |
| 710 | var previousSlidesTiming = slideEndTiming - currentSlideTiming; |
| 711 | var now = new Date(); |
| 712 | start = new Date(now.getTime() - previousSlidesTiming); |
| 713 | _updateTimer(); |
| 714 | } ); |
| 715 | } ); |
| 716 | } |
| 717 | |
| 718 | } |
| 719 | |
| 720 | timeEl.addEventListener( 'click', function() { |
| 721 | _resetTimer(); |
| 722 | return false; |
| 723 | } ); |
| 724 | |
| 725 | function _displayTime( hrEl, minEl, secEl, time) { |
| 726 | |
| 727 | var sign = Math.sign(time) == -1 ? "-" : ""; |
| 728 | time = Math.abs(Math.round(time / 1000)); |
| 729 | var seconds = time % 60; |
| 730 | var minutes = Math.floor( time / 60 ) % 60 ; |
| 731 | var hours = Math.floor( time / ( 60 * 60 )) ; |
| 732 | hrEl.innerHTML = sign + zeroPadInteger( hours ); |
| 733 | if (hours == 0) { |
| 734 | hrEl.classList.add( 'mute' ); |
| 735 | } |
| 736 | else { |
| 737 | hrEl.classList.remove( 'mute' ); |
| 738 | } |
| 739 | minEl.innerHTML = ':' + zeroPadInteger( minutes ); |
| 740 | if (hours == 0 && minutes == 0) { |
| 741 | minEl.classList.add( 'mute' ); |
| 742 | } |
| 743 | else { |
| 744 | minEl.classList.remove( 'mute' ); |
| 745 | } |
| 746 | secEl.innerHTML = ':' + zeroPadInteger( seconds ); |
| 747 | } |
| 748 | |
| 749 | function _updateTimer() { |
| 750 | |
| 751 | var diff, hours, minutes, seconds, |
| 752 | now = new Date(); |
| 753 | |
| 754 | diff = now.getTime() - start.getTime(); |
| 755 | |
| 756 | clockEl.innerHTML = now.toLocaleTimeString( 'en-US', { hour12: true, hour: '2-digit', minute:'2-digit' } ); |
| 757 | _displayTime( hoursEl, minutesEl, secondsEl, diff ); |
| 758 | if (timings !== null) { |
| 759 | _updatePacing(diff); |
| 760 | } |
| 761 | |
| 762 | } |
| 763 | |
| 764 | function _updatePacing(diff) { |
| 765 | |
| 766 | getTimeAllocated( timings, function ( slideEndTimingSeconds ) { |
| 767 | var slideEndTiming = slideEndTimingSeconds * 1000; |
| 768 | |
| 769 | callRevealApi( 'getSlidePastCount', [], function ( currentSlide ) { |
| 770 | var currentSlideTiming = timings[currentSlide] * 1000; |
| 771 | var timeLeftCurrentSlide = slideEndTiming - diff; |
| 772 | if (timeLeftCurrentSlide < 0) { |
| 773 | pacingEl.className = 'pacing behind'; |
| 774 | } |
| 775 | else if (timeLeftCurrentSlide < currentSlideTiming) { |
| 776 | pacingEl.className = 'pacing on-track'; |
| 777 | } |
| 778 | else { |
| 779 | pacingEl.className = 'pacing ahead'; |
| 780 | } |
| 781 | _displayTime( pacingHoursEl, pacingMinutesEl, pacingSecondsEl, timeLeftCurrentSlide ); |
| 782 | } ); |
| 783 | } ); |
| 784 | } |
| 785 | |
| 786 | } |
| 787 | |
| 788 | /** |
| 789 | * Sets up the speaker view layout and layout selector. |
| 790 | */ |
| 791 | function setupLayout() { |
| 792 | |
| 793 | layoutDropdown = document.querySelector( '.speaker-layout-dropdown' ); |
| 794 | layoutLabel = document.querySelector( '.speaker-layout-label' ); |
| 795 | |
| 796 | // Render the list of available layouts |
| 797 | for( var id in SPEAKER_LAYOUTS ) { |
| 798 | var option = document.createElement( 'option' ); |
| 799 | option.setAttribute( 'value', id ); |
| 800 | option.textContent = SPEAKER_LAYOUTS[ id ]; |
| 801 | layoutDropdown.appendChild( option ); |
| 802 | } |
| 803 | |
| 804 | // Monitor the dropdown for changes |
| 805 | layoutDropdown.addEventListener( 'change', function( event ) { |
| 806 | |
| 807 | setLayout( layoutDropdown.value ); |
| 808 | |
| 809 | }, false ); |
| 810 | |
| 811 | // Restore any currently persisted layout |
| 812 | setLayout( getLayout() ); |
| 813 | |
| 814 | } |
| 815 | |
| 816 | /** |
| 817 | * Sets a new speaker view layout. The layout is persisted |
| 818 | * in local storage. |
| 819 | */ |
| 820 | function setLayout( value ) { |
| 821 | |
| 822 | var title = SPEAKER_LAYOUTS[ value ]; |
| 823 | |
| 824 | layoutLabel.innerHTML = 'Layout' + ( title ? ( ': ' + title ) : '' ); |
| 825 | layoutDropdown.value = value; |
| 826 | |
| 827 | document.body.setAttribute( 'data-speaker-layout', value ); |
| 828 | |
| 829 | // Persist locally |
| 830 | if( supportsLocalStorage() ) { |
| 831 | window.localStorage.setItem( 'reveal-speaker-layout', value ); |
| 832 | } |
| 833 | |
| 834 | } |
| 835 | |
| 836 | /** |
| 837 | * Returns the ID of the most recently set speaker layout |
| 838 | * or our default layout if none has been set. |
| 839 | */ |
| 840 | function getLayout() { |
| 841 | |
| 842 | if( supportsLocalStorage() ) { |
| 843 | var layout = window.localStorage.getItem( 'reveal-speaker-layout' ); |
| 844 | if( layout ) { |
| 845 | return layout; |
| 846 | } |
| 847 | } |
| 848 | |
| 849 | // Default to the first record in the layouts hash |
| 850 | for( var id in SPEAKER_LAYOUTS ) { |
| 851 | return id; |
| 852 | } |
| 853 | |
| 854 | } |
| 855 | |
| 856 | function supportsLocalStorage() { |
| 857 | |
| 858 | try { |
| 859 | localStorage.setItem('test', 'test'); |
| 860 | localStorage.removeItem('test'); |
| 861 | return true; |
| 862 | } |
| 863 | catch( e ) { |
| 864 | return false; |
| 865 | } |
| 866 | |
| 867 | } |
| 868 | |
| 869 | function zeroPadInteger( num ) { |
| 870 | |
| 871 | var str = '00' + parseInt( num ); |
| 872 | return str.substring( str.length - 2 ); |
| 873 | |
| 874 | } |
| 875 | |
| 876 | /** |
| 877 | * Limits the frequency at which a function can be called. |
| 878 | */ |
| 879 | function debounce( fn, ms ) { |
| 880 | |
| 881 | var lastTime = 0, |
| 882 | timeout; |
| 883 | |
| 884 | return function() { |
| 885 | |
| 886 | var args = arguments; |
| 887 | var context = this; |
| 888 | |
| 889 | clearTimeout( timeout ); |
| 890 | |
| 891 | var timeSinceLastCall = Date.now() - lastTime; |
| 892 | if( timeSinceLastCall > ms ) { |
| 893 | fn.apply( context, args ); |
| 894 | lastTime = Date.now(); |
| 895 | } |
| 896 | else { |
| 897 | timeout = setTimeout( function() { |
| 898 | fn.apply( context, args ); |
| 899 | lastTime = Date.now(); |
| 900 | }, ms - timeSinceLastCall ); |
| 901 | } |
| 902 | |
| 903 | } |
| 904 | |
| 905 | } |
| 906 | |
| 907 | })(); |
| 908 | |
| 909 | </script> |
| 910 | </body> |
| 911 | </html> |