break autoanimate and loading of slide content into separate controllers
This commit is contained in:
Hakim El Hattab
parent
ddd13ee9cf
commit
d42d88dae4
File diff suppressed because one or more lines are too long
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@ -0,0 +1,544 @@
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import { extend, toArray, createStyleSheet } from '../utils/util.js'
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export default class AutoAnimate {
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constructor( Reveal ) {
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this.Reveal = Reveal;
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// Counter used to generate unique IDs for auto-animated elements
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this.autoAnimateCounter = 0;
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}
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/**
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* Runs an auto-animation between the given slides.
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*
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* @param {HTMLElement} fromSlide
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* @param {HTMLElement} toSlide
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*/
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run( fromSlide, toSlide ) {
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// Clean up after prior animations
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this.reset();
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// Ensure that both slides are auto-animate targets
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if( fromSlide.hasAttribute( 'data-auto-animate' ) && toSlide.hasAttribute( 'data-auto-animate' ) ) {
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// Create a new auto-animate sheet
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this.autoAnimateStyleSheet = this.autoAnimateStyleSheet || createStyleSheet();
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let animationOptions = this.getAutoAnimateOptions( toSlide );
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// Set our starting state
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fromSlide.dataset.autoAnimate = 'pending';
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toSlide.dataset.autoAnimate = 'pending';
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// Inject our auto-animate styles for this transition
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let css = this.getAutoAnimatableElements( fromSlide, toSlide ).map( elements => {
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return this.getAutoAnimateCSS( elements.from, elements.to, elements.options || {}, animationOptions, this.autoAnimateCounter++ );
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} );
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// Animate unmatched elements, if enabled
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if( toSlide.dataset.autoAnimateUnmatched !== 'false' && this.Reveal.getConfig().autoAnimateUnmatched === true ) {
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this.getUnmatchedAutoAnimateElements( toSlide ).forEach( unmatchedElement => {
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unmatchedElement.dataset.autoAnimateTarget = 'unmatched';
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} );
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css.push( `[data-auto-animate="running"] [data-auto-animate-target="unmatched"] { transition: opacity ${animationOptions.duration*0.8}s ease ${animationOptions.duration*0.2}s; }` );
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}
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// Setting the whole chunk of CSS at once is the most
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// efficient way to do this. Using sheet.insertRule
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// is multiple factors slower.
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this.autoAnimateStyleSheet.innerHTML = css.join( '' );
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// Start the animation next cycle
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requestAnimationFrame( () => {
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if( this.autoAnimateStyleSheet ) {
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// This forces our newly injected styles to be applied in Firefox
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getComputedStyle( this.autoAnimateStyleSheet ).fontWeight;
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toSlide.dataset.autoAnimate = 'running';
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}
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} );
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this.Reveal.dispatchEvent( 'autoanimate', { fromSlide: fromSlide, toSlide: toSlide, sheet: this.autoAnimateStyleSheet } );
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}
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}
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/**
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* Rolls back all changes that we've made to the DOM so
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* that as part of animating.
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*/
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reset() {
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// Reset slides
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toArray( this.Reveal.getRevealElement().querySelectorAll( '[data-auto-animate]:not([data-auto-animate=""])' ) ).forEach( element => {
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element.dataset.autoAnimate = '';
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} );
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// Reset elements
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toArray( this.Reveal.getRevealElement().querySelectorAll( '[data-auto-animate-target]' ) ).forEach( element => {
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delete element.dataset.autoAnimateTarget;
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} );
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// Remove the animation sheet
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if( this.autoAnimateStyleSheet && this.autoAnimateStyleSheet.parentNode ) {
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this.autoAnimateStyleSheet.parentNode.removeChild( this.autoAnimateStyleSheet );
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this.autoAnimateStyleSheet = null;
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}
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}
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/**
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* Auto-animates the properties of an element from their original
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* values to their new state.
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*
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* @param {HTMLElement} from
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* @param {HTMLElement} to
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* @param {Object} elementOptions Options for this element pair
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* @param {Object} animationOptions Options set at the slide level
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* @param {String} id Unique ID that we can use to identify this
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* auto-animate element in the DOM
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*/
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getAutoAnimateCSS( from, to, elementOptions, animationOptions, id ) {
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// 'from' elements are given a data-auto-animate-target with no value,
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// 'to' elements are are given a data-auto-animate-target with an ID
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from.dataset.autoAnimateTarget = '';
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to.dataset.autoAnimateTarget = id;
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// Each element may override any of the auto-animate options
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// like transition easing, duration and delay via data-attributes
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let options = this.getAutoAnimateOptions( to, animationOptions );
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// If we're using a custom element matcher the element options
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// may contain additional transition overrides
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if( typeof elementOptions.delay !== 'undefined' ) options.delay = elementOptions.delay;
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if( typeof elementOptions.duration !== 'undefined' ) options.duration = elementOptions.duration;
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if( typeof elementOptions.easing !== 'undefined' ) options.easing = elementOptions.easing;
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let fromProps = this.getAutoAnimatableProperties( 'from', from, elementOptions ),
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toProps = this.getAutoAnimatableProperties( 'to', to, elementOptions );
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// If translation and/or scaling are enabled, css transform
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// the 'to' element so that it matches the position and size
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// of the 'from' element
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if( elementOptions.translate !== false || elementOptions.scale !== false ) {
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let presentationScale = this.Reveal.getScale();
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let delta = {
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x: ( fromProps.x - toProps.x ) / presentationScale,
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y: ( fromProps.y - toProps.y ) / presentationScale,
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scaleX: fromProps.width / toProps.width,
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scaleY: fromProps.height / toProps.height
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};
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// Limit decimal points to avoid 0.0001px blur and stutter
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delta.x = Math.round( delta.x * 1000 ) / 1000;
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delta.y = Math.round( delta.y * 1000 ) / 1000;
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delta.scaleX = Math.round( delta.scaleX * 1000 ) / 1000;
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delta.scaleX = Math.round( delta.scaleX * 1000 ) / 1000;
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let translate = elementOptions.translate !== false && ( delta.x !== 0 || delta.y !== 0 ),
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scale = elementOptions.scale !== false && ( delta.scaleX !== 0 || delta.scaleY !== 0 );
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// No need to transform if nothing's changed
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if( translate || scale ) {
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let transform = [];
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if( translate ) transform.push( `translate(${delta.x}px, ${delta.y}px)` );
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if( scale ) transform.push( `scale(${delta.scaleX}, ${delta.scaleY})` );
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fromProps.styles['transform'] = transform.join( ' ' );
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fromProps.styles['transform-origin'] = 'top left';
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toProps.styles['transform'] = 'none';
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}
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}
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// Delete all unchanged 'to' styles
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for( let propertyName in toProps.styles ) {
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const toValue = toProps.styles[propertyName];
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const fromValue = fromProps.styles[propertyName];
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if( toValue === fromValue ) {
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delete toProps.styles[propertyName];
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}
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else {
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// If these property values were set via a custom matcher providing
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// an explicit 'from' and/or 'to' value, we always inject those values.
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if( toValue.explicitValue === true ) {
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toProps.styles[propertyName] = toValue.value;
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}
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if( fromValue.explicitValue === true ) {
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fromProps.styles[propertyName] = fromValue.value;
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}
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}
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}
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let css = '';
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let toStyleProperties = Object.keys( toProps.styles );
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// Only create animate this element IF at least one style
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// property has changed
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if( toStyleProperties.length > 0 ) {
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// Instantly move to the 'from' state
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fromProps.styles['transition'] = 'none';
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// Animate towards the 'to' state
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toProps.styles['transition'] = `all ${options.duration}s ${options.easing} ${options.delay}s`;
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toProps.styles['transition-property'] = toStyleProperties.join( ', ' );
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toProps.styles['will-change'] = toStyleProperties.join( ', ' );
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// Build up our custom CSS. We need to override inline styles
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// so we need to make our styles vErY IMPORTANT!1!!
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let fromCSS = Object.keys( fromProps.styles ).map( propertyName => {
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return propertyName + ': ' + fromProps.styles[propertyName] + ' !important;';
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} ).join( '' );
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let toCSS = Object.keys( toProps.styles ).map( propertyName => {
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return propertyName + ': ' + toProps.styles[propertyName] + ' !important;';
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} ).join( '' );
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css = '[data-auto-animate-target="'+ id +'"] {'+ fromCSS +'}' +
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'[data-auto-animate="running"] [data-auto-animate-target="'+ id +'"] {'+ toCSS +'}';
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}
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return css;
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}
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/**
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* Returns the auto-animate options for the given element.
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*
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* @param {HTMLElement} element Element to pick up options
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* from, either a slide or an animation target
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* @param {Object} [inheritedOptions] Optional set of existing
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* options
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*/
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getAutoAnimateOptions( element, inheritedOptions ) {
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let options = {
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easing: this.Reveal.getConfig().autoAnimateEasing,
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duration: this.Reveal.getConfig().autoAnimateDuration,
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delay: 0
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};
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options = extend( options, inheritedOptions );
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// Inherit options from parent elements
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if( element.closest && element.parentNode ) {
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let autoAnimatedParent = element.parentNode.closest( '[data-auto-animate-target]' );
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if( autoAnimatedParent ) {
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options = this.getAutoAnimateOptions( autoAnimatedParent, options );
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}
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}
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if( element.dataset.autoAnimateEasing ) {
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options.easing = element.dataset.autoAnimateEasing;
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}
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if( element.dataset.autoAnimateDuration ) {
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options.duration = parseFloat( element.dataset.autoAnimateDuration );
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}
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if( element.dataset.autoAnimateDelay ) {
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options.delay = parseFloat( element.dataset.autoAnimateDelay );
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}
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return options;
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}
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/**
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* Returns an object containing all of the properties
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* that can be auto-animated for the given element and
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* their current computed values.
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*
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* @param {String} direction 'from' or 'to'
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*/
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getAutoAnimatableProperties( direction, element, elementOptions ) {
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let properties = { styles: [] };
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// Position and size
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if( elementOptions.translate !== false || elementOptions.scale !== false ) {
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let bounds;
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// Custom auto-animate may optionally return a custom tailored
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// measurement function
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if( typeof elementOptions.measure === 'function' ) {
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bounds = elementOptions.measure( element );
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}
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else {
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bounds = element.getBoundingClientRect();
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}
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properties.x = bounds.x;
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properties.y = bounds.y;
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properties.width = bounds.width;
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properties.height = bounds.height;
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}
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const computedStyles = getComputedStyle( element );
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// CSS styles
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( elementOptions.styles || this.Reveal.getConfig().autoAnimateStyles ).forEach( style => {
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let value;
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// `style` is either the property name directly, or an object
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// definition of a style property
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if( typeof style === 'string' ) style = { property: style };
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if( typeof style.from !== 'undefined' && direction === 'from' ) {
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value = { value: style.from, explicitValue: true };
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}
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else if( typeof style.to !== 'undefined' && direction === 'to' ) {
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value = { value: style.to, explicitValue: true };
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}
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else {
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value = computedStyles[style.property];
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}
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if( value !== '' ) {
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properties.styles[style.property] = value;
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}
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} );
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return properties;
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}
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/**
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* Get a list of all element pairs that we can animate
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* between the given slides.
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*
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* @param {HTMLElement} fromSlide
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* @param {HTMLElement} toSlide
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*
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* @return {Array} Each value is an array where [0] is
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* the element we're animating from and [1] is the
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* element we're animating to
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*/
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getAutoAnimatableElements( fromSlide, toSlide ) {
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let matcher = typeof this.Reveal.getConfig().autoAnimateMatcher === 'function' ? this.Reveal.getConfig().autoAnimateMatcher : this.getAutoAnimatePairs;
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let pairs = matcher.call( this, fromSlide, toSlide );
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let reserved = [];
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// Remove duplicate pairs
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return pairs.filter( ( pair, index ) => {
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if( reserved.indexOf( pair.to ) === -1 ) {
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reserved.push( pair.to );
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return true;
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}
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} );
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}
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/**
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* Identifies matching elements between slides.
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*
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* You can specify a custom matcher function by using
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* the `autoAnimateMatcher` config option.
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*/
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getAutoAnimatePairs( fromSlide, toSlide ) {
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let pairs = [];
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const codeNodes = 'pre';
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const textNodes = 'h1, h2, h3, h4, h5, h6, p, li';
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const mediaNodes = 'img, video, iframe';
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// Eplicit matches via data-id
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this.findAutoAnimateMatches( pairs, fromSlide, toSlide, '[data-id]', node => {
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return node.nodeName + ':::' + node.getAttribute( 'data-id' );
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} );
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// Text
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this.findAutoAnimateMatches( pairs, fromSlide, toSlide, textNodes, node => {
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return node.nodeName + ':::' + node.innerText;
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} );
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// Media
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this.findAutoAnimateMatches( pairs, fromSlide, toSlide, mediaNodes, node => {
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return node.nodeName + ':::' + ( node.getAttribute( 'src' ) || node.getAttribute( 'data-src' ) );
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} );
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// Code
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this.findAutoAnimateMatches( pairs, fromSlide, toSlide, codeNodes, node => {
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return node.nodeName + ':::' + node.innerText;
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} );
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pairs.forEach( pair => {
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// Disable scale transformations on text nodes, we transiition
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// each individual text property instead
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if( pair.from.matches( textNodes ) ) {
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pair.options = { scale: false };
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}
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// Animate individual lines of code
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else if( pair.from.matches( codeNodes ) ) {
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// Transition the code block's width and height instead of scaling
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// to prevent its content from being squished
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pair.options = { scale: false, styles: [ 'width', 'height' ] };
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// Lines of code
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this.findAutoAnimateMatches( pairs, pair.from, pair.to, '.hljs .hljs-ln-code', node => {
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return node.textContent;
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}, {
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scale: false,
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styles: [],
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measure: this.getLocalBoundingBox.bind( this )
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} );
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// Line numbers
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this.findAutoAnimateMatches( pairs, pair.from, pair.to, '.hljs .hljs-ln-line[data-line-number]', node => {
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return node.getAttribute( 'data-line-number' );
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}, {
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scale: false,
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styles: [ 'width' ],
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measure: this.getLocalBoundingBox.bind( this )
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} );
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}
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}, this );
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return pairs;
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}
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/**
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* Helper method which returns a bounding box based on
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* the given elements offset coordinates.
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*
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* @param {HTMLElement} element
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* @return {Object} x, y, width, height
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*/
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getLocalBoundingBox( element ) {
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const presentationScale = this.Reveal.getScale();
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return {
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x: Math.round( ( element.offsetLeft * presentationScale ) * 100 ) / 100,
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y: Math.round( ( element.offsetTop * presentationScale ) * 100 ) / 100,
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width: Math.round( ( element.offsetWidth * presentationScale ) * 100 ) / 100,
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height: Math.round( ( element.offsetHeight * presentationScale ) * 100 ) / 100
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};
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}
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/**
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* Finds matching elements between two slides.
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*
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* @param {Array} pairs List of pairs to push matches to
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* @param {HTMLElement} fromScope Scope within the from element exists
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* @param {HTMLElement} toScope Scope within the to element exists
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* @param {String} selector CSS selector of the element to match
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* @param {Function} serializer A function that accepts an element and returns
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* a stringified ID based on its contents
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* @param {Object} animationOptions Optional config options for this pair
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*/
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findAutoAnimateMatches( pairs, fromScope, toScope, selector, serializer, animationOptions ) {
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let fromMatches = {};
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let toMatches = {};
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[].slice.call( fromScope.querySelectorAll( selector ) ).forEach( ( element, i ) => {
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const key = serializer( element );
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if( typeof key === 'string' && key.length ) {
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fromMatches[key] = fromMatches[key] || [];
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fromMatches[key].push( element );
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}
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} );
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[].slice.call( toScope.querySelectorAll( selector ) ).forEach( ( element, i ) => {
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const key = serializer( element );
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toMatches[key] = toMatches[key] || [];
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toMatches[key].push( element );
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let fromElement;
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// Retrieve the 'from' element
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if( fromMatches[key] ) {
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const pimaryIndex = toMatches[key].length - 1;
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const secondaryIndex = fromMatches[key].length - 1;
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// If there are multiple identical from elements, retrieve
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// the one at the same index as our to-element.
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if( fromMatches[key][ pimaryIndex ] ) {
|
||||
fromElement = fromMatches[key][ pimaryIndex ];
|
||||
fromMatches[key][ pimaryIndex ] = null;
|
||||
}
|
||||
// If there are no matching from-elements at the same index,
|
||||
// use the last one.
|
||||
else if( fromMatches[key][ secondaryIndex ] ) {
|
||||
fromElement = fromMatches[key][ secondaryIndex ];
|
||||
fromMatches[key][ secondaryIndex ] = null;
|
||||
}
|
||||
}
|
||||
|
||||
// If we've got a matching pair, push it to the list of pairs
|
||||
if( fromElement ) {
|
||||
pairs.push({
|
||||
from: fromElement,
|
||||
to: element,
|
||||
options: animationOptions
|
||||
});
|
||||
}
|
||||
} );
|
||||
|
||||
}
|
||||
|
||||
/**
|
||||
* Returns a all elements within the given scope that should
|
||||
* be considered unmatched in an auto-animate transition. If
|
||||
* fading of unmatched elements is turned on, these elements
|
||||
* will fade when going between auto-animate slides.
|
||||
*
|
||||
* Note that parents of auto-animate targets are NOT considerd
|
||||
* unmatched since fading them would break the auto-animation.
|
||||
*
|
||||
* @param {HTMLElement} rootElement
|
||||
* @return {Array}
|
||||
*/
|
||||
getUnmatchedAutoAnimateElements( rootElement ) {
|
||||
|
||||
return [].slice.call( rootElement.children ).reduce( ( result, element ) => {
|
||||
|
||||
const containsAnimatedElements = element.querySelector( '[data-auto-animate-target]' );
|
||||
|
||||
// The element is unmatched if
|
||||
// - It is not an auto-animate target
|
||||
// - It does not contain any auto-animate targets
|
||||
if( !element.hasAttribute( 'data-auto-animate-target' ) && !containsAnimatedElements ) {
|
||||
result.push( element );
|
||||
}
|
||||
|
||||
if( element.querySelector( '[data-auto-animate-target]' ) ) {
|
||||
result = result.concat( this.getUnmatchedAutoAnimateElements( element ) );
|
||||
}
|
||||
|
||||
return result;
|
||||
|
||||
}, [] );
|
||||
|
||||
}
|
||||
|
||||
}
|
||||
|
|
@ -7,8 +7,8 @@ export default class Plugins {
|
|||
|
||||
constructor() {
|
||||
|
||||
// Flags our current state (pending -> loading -> loaded)
|
||||
this.state = 'pending';
|
||||
// Flags our current state (idle -> loading -> loaded)
|
||||
this.state = 'idle';
|
||||
|
||||
// An id:instance map of currently registed plugins
|
||||
this.registeredPlugins = {};
|
||||
|
|
|
|||
|
|
@ -0,0 +1,408 @@
|
|||
import { HORIZONTAL_SLIDES_SELECTOR, VERTICAL_SLIDES_SELECTOR } from '../utils/constants.js'
|
||||
import { extend, toArray, closestParent } from '../utils/util.js'
|
||||
|
||||
export default class SlideContent {
|
||||
|
||||
constructor( Reveal ) {
|
||||
|
||||
this.Reveal = Reveal;
|
||||
|
||||
}
|
||||
|
||||
/**
|
||||
* Called when the given slide is within the configured view
|
||||
* distance. Shows the slide element and loads any content
|
||||
* that is set to load lazily (data-src).
|
||||
*
|
||||
* @param {HTMLElement} slide Slide to show
|
||||
*/
|
||||
load( slide, options = {} ) {
|
||||
|
||||
// Show the slide element
|
||||
slide.style.display = this.Reveal.getConfig().display;
|
||||
|
||||
// Media elements with data-src attributes
|
||||
toArray( slide.querySelectorAll( 'img[data-src], video[data-src], audio[data-src], iframe[data-src]' ) ).forEach( element => {
|
||||
if( element.tagName !== 'IFRAME' || shouldPreload( element ) ) {
|
||||
element.setAttribute( 'src', element.getAttribute( 'data-src' ) );
|
||||
element.setAttribute( 'data-lazy-loaded', '' );
|
||||
element.removeAttribute( 'data-src' );
|
||||
}
|
||||
} );
|
||||
|
||||
// Media elements with <source> children
|
||||
toArray( slide.querySelectorAll( 'video, audio' ) ).forEach( media => {
|
||||
let sources = 0;
|
||||
|
||||
toArray( media.querySelectorAll( 'source[data-src]' ) ).forEach( source => {
|
||||
source.setAttribute( 'src', source.getAttribute( 'data-src' ) );
|
||||
source.removeAttribute( 'data-src' );
|
||||
source.setAttribute( 'data-lazy-loaded', '' );
|
||||
sources += 1;
|
||||
} );
|
||||
|
||||
// If we rewrote sources for this video/audio element, we need
|
||||
// to manually tell it to load from its new origin
|
||||
if( sources > 0 ) {
|
||||
media.load();
|
||||
}
|
||||
} );
|
||||
|
||||
|
||||
// Show the corresponding background element
|
||||
let background = slide.slideBackgroundElement;
|
||||
if( background ) {
|
||||
background.style.display = 'block';
|
||||
|
||||
let backgroundContent = slide.slideBackgroundContentElement;
|
||||
let backgroundIframe = slide.getAttribute( 'data-background-iframe' );
|
||||
|
||||
// If the background contains media, load it
|
||||
if( background.hasAttribute( 'data-loaded' ) === false ) {
|
||||
background.setAttribute( 'data-loaded', 'true' );
|
||||
|
||||
let backgroundImage = slide.getAttribute( 'data-background-image' ),
|
||||
backgroundVideo = slide.getAttribute( 'data-background-video' ),
|
||||
backgroundVideoLoop = slide.hasAttribute( 'data-background-video-loop' ),
|
||||
backgroundVideoMuted = slide.hasAttribute( 'data-background-video-muted' );
|
||||
|
||||
// Images
|
||||
if( backgroundImage ) {
|
||||
backgroundContent.style.backgroundImage = 'url('+ encodeURI( backgroundImage ) +')';
|
||||
}
|
||||
// Videos
|
||||
else if ( backgroundVideo && !this.Reveal.isSpeakerNotes() ) {
|
||||
let video = document.createElement( 'video' );
|
||||
|
||||
if( backgroundVideoLoop ) {
|
||||
video.setAttribute( 'loop', '' );
|
||||
}
|
||||
|
||||
if( backgroundVideoMuted ) {
|
||||
video.muted = true;
|
||||
}
|
||||
|
||||
// Inline video playback works (at least in Mobile Safari) as
|
||||
// long as the video is muted and the `playsinline` attribute is
|
||||
// present
|
||||
if( isMobileDevice ) {
|
||||
video.muted = true;
|
||||
video.autoplay = true;
|
||||
video.setAttribute( 'playsinline', '' );
|
||||
}
|
||||
|
||||
// Support comma separated lists of video sources
|
||||
backgroundVideo.split( ',' ).forEach( source => {
|
||||
video.innerHTML += '<source src="'+ source +'">';
|
||||
} );
|
||||
|
||||
backgroundContent.appendChild( video );
|
||||
}
|
||||
// Iframes
|
||||
else if( backgroundIframe && options.excludeIframes !== true ) {
|
||||
let iframe = document.createElement( 'iframe' );
|
||||
iframe.setAttribute( 'allowfullscreen', '' );
|
||||
iframe.setAttribute( 'mozallowfullscreen', '' );
|
||||
iframe.setAttribute( 'webkitallowfullscreen', '' );
|
||||
iframe.setAttribute( 'allow', 'autoplay' );
|
||||
|
||||
iframe.setAttribute( 'data-src', backgroundIframe );
|
||||
|
||||
iframe.style.width = '100%';
|
||||
iframe.style.height = '100%';
|
||||
iframe.style.maxHeight = '100%';
|
||||
iframe.style.maxWidth = '100%';
|
||||
|
||||
backgroundContent.appendChild( iframe );
|
||||
}
|
||||
}
|
||||
|
||||
// Start loading preloadable iframes
|
||||
let backgroundIframeElement = backgroundContent.querySelector( 'iframe[data-src]' );
|
||||
if( backgroundIframeElement ) {
|
||||
|
||||
// Check if this iframe is eligible to be preloaded
|
||||
if( shouldPreload( background ) && !/autoplay=(1|true|yes)/gi.test( backgroundIframe ) ) {
|
||||
if( backgroundIframeElement.getAttribute( 'src' ) !== backgroundIframe ) {
|
||||
backgroundIframeElement.setAttribute( 'src', backgroundIframe );
|
||||
}
|
||||
}
|
||||
|
||||
}
|
||||
|
||||
}
|
||||
|
||||
}
|
||||
|
||||
/**
|
||||
* Unloads and hides the given slide. This is called when the
|
||||
* slide is moved outside of the configured view distance.
|
||||
*
|
||||
* @param {HTMLElement} slide
|
||||
*/
|
||||
unload( slide ) {
|
||||
|
||||
// Hide the slide element
|
||||
slide.style.display = 'none';
|
||||
|
||||
// Hide the corresponding background element
|
||||
let background = this.Reveal.getSlideBackground( slide );
|
||||
if( background ) {
|
||||
background.style.display = 'none';
|
||||
|
||||
// Unload any background iframes
|
||||
toArray( background.querySelectorAll( 'iframe[src]' ) ).forEach( element => {
|
||||
element.removeAttribute( 'src' );
|
||||
} );
|
||||
}
|
||||
|
||||
// Reset lazy-loaded media elements with src attributes
|
||||
toArray( slide.querySelectorAll( 'video[data-lazy-loaded][src], audio[data-lazy-loaded][src], iframe[data-lazy-loaded][src]' ) ).forEach( element => {
|
||||
element.setAttribute( 'data-src', element.getAttribute( 'src' ) );
|
||||
element.removeAttribute( 'src' );
|
||||
} );
|
||||
|
||||
// Reset lazy-loaded media elements with <source> children
|
||||
toArray( slide.querySelectorAll( 'video[data-lazy-loaded] source[src], audio source[src]' ) ).forEach( source => {
|
||||
source.setAttribute( 'data-src', source.getAttribute( 'src' ) );
|
||||
source.removeAttribute( 'src' );
|
||||
} );
|
||||
|
||||
}
|
||||
|
||||
/**
|
||||
* Enforces origin-specific format rules for embedded media.
|
||||
*/
|
||||
formatEmbeddedContent() {
|
||||
|
||||
let _appendParamToIframeSource = ( sourceAttribute, sourceURL, param ) => {
|
||||
toArray( this.Reveal.getSlidesElement().querySelectorAll( 'iframe['+ sourceAttribute +'*="'+ sourceURL +'"]' ) ).forEach( el => {
|
||||
let src = el.getAttribute( sourceAttribute );
|
||||
if( src && src.indexOf( param ) === -1 ) {
|
||||
el.setAttribute( sourceAttribute, src + ( !/\?/.test( src ) ? '?' : '&' ) + param );
|
||||
}
|
||||
});
|
||||
};
|
||||
|
||||
// YouTube frames must include "?enablejsapi=1"
|
||||
_appendParamToIframeSource( 'src', 'youtube.com/embed/', 'enablejsapi=1' );
|
||||
_appendParamToIframeSource( 'data-src', 'youtube.com/embed/', 'enablejsapi=1' );
|
||||
|
||||
// Vimeo frames must include "?api=1"
|
||||
_appendParamToIframeSource( 'src', 'player.vimeo.com/', 'api=1' );
|
||||
_appendParamToIframeSource( 'data-src', 'player.vimeo.com/', 'api=1' );
|
||||
|
||||
}
|
||||
|
||||
/**
|
||||
* Start playback of any embedded content inside of
|
||||
* the given element.
|
||||
*
|
||||
* @param {HTMLElement} element
|
||||
*/
|
||||
startEmbeddedContent( element ) {
|
||||
|
||||
if( element && !this.Reveal.isSpeakerNotes() ) {
|
||||
|
||||
// Restart GIFs
|
||||
toArray( element.querySelectorAll( 'img[src$=".gif"]' ) ).forEach( el => {
|
||||
// Setting the same unchanged source like this was confirmed
|
||||
// to work in Chrome, FF & Safari
|
||||
el.setAttribute( 'src', el.getAttribute( 'src' ) );
|
||||
} );
|
||||
|
||||
// HTML5 media elements
|
||||
toArray( element.querySelectorAll( 'video, audio' ) ).forEach( el => {
|
||||
if( closestParent( el, '.fragment' ) && !closestParent( el, '.fragment.visible' ) ) {
|
||||
return;
|
||||
}
|
||||
|
||||
// Prefer an explicit global autoplay setting
|
||||
let autoplay = config.autoPlayMedia;
|
||||
|
||||
// If no global setting is available, fall back on the element's
|
||||
// own autoplay setting
|
||||
if( typeof autoplay !== 'boolean' ) {
|
||||
autoplay = el.hasAttribute( 'data-autoplay' ) || !!closestParent( el, '.slide-background' );
|
||||
}
|
||||
|
||||
if( autoplay && typeof el.play === 'function' ) {
|
||||
|
||||
// If the media is ready, start playback
|
||||
if( el.readyState > 1 ) {
|
||||
this.startEmbeddedMedia( { target: el } );
|
||||
}
|
||||
// Mobile devices never fire a loaded event so instead
|
||||
// of waiting, we initiate playback
|
||||
else if( isMobileDevice ) {
|
||||
let promise = el.play();
|
||||
|
||||
// If autoplay does not work, ensure that the controls are visible so
|
||||
// that the viewer can start the media on their own
|
||||
if( promise && typeof promise.catch === 'function' && el.controls === false ) {
|
||||
promise.catch( () => {
|
||||
el.controls = true;
|
||||
|
||||
// Once the video does start playing, hide the controls again
|
||||
el.addEventListener( 'play', () => {
|
||||
el.controls = false;
|
||||
} );
|
||||
} );
|
||||
}
|
||||
}
|
||||
// If the media isn't loaded, wait before playing
|
||||
else {
|
||||
el.removeEventListener( 'loadeddata', this.startEmbeddedMedia ); // remove first to avoid dupes
|
||||
el.addEventListener( 'loadeddata', this.startEmbeddedMedia );
|
||||
}
|
||||
|
||||
}
|
||||
} );
|
||||
|
||||
// Normal iframes
|
||||
toArray( element.querySelectorAll( 'iframe[src]' ) ).forEach( el => {
|
||||
if( closestParent( el, '.fragment' ) && !closestParent( el, '.fragment.visible' ) ) {
|
||||
return;
|
||||
}
|
||||
|
||||
this.startEmbeddedIframe( { target: el } );
|
||||
} );
|
||||
|
||||
// Lazy loading iframes
|
||||
toArray( element.querySelectorAll( 'iframe[data-src]' ) ).forEach( el => {
|
||||
if( closestParent( el, '.fragment' ) && !closestParent( el, '.fragment.visible' ) ) {
|
||||
return;
|
||||
}
|
||||
|
||||
if( el.getAttribute( 'src' ) !== el.getAttribute( 'data-src' ) ) {
|
||||
el.removeEventListener( 'load', this.startEmbeddedIframe ); // remove first to avoid dupes
|
||||
el.addEventListener( 'load', this.startEmbeddedIframe );
|
||||
el.setAttribute( 'src', el.getAttribute( 'data-src' ) );
|
||||
}
|
||||
} );
|
||||
|
||||
}
|
||||
|
||||
}
|
||||
|
||||
/**
|
||||
* Starts playing an embedded video/audio element after
|
||||
* it has finished loading.
|
||||
*
|
||||
* @param {object} event
|
||||
*/
|
||||
startEmbeddedMedia( event ) {
|
||||
|
||||
let isAttachedToDOM = !!closestParent( event.target, 'html' ),
|
||||
isVisible = !!closestParent( event.target, '.present' );
|
||||
|
||||
if( isAttachedToDOM && isVisible ) {
|
||||
event.target.currentTime = 0;
|
||||
event.target.play();
|
||||
}
|
||||
|
||||
event.target.removeEventListener( 'loadeddata', this.startEmbeddedMedia );
|
||||
|
||||
}
|
||||
|
||||
/**
|
||||
* "Starts" the content of an embedded iframe using the
|
||||
* postMessage API.
|
||||
*
|
||||
* @param {object} event
|
||||
*/
|
||||
startEmbeddedIframe( event ) {
|
||||
|
||||
let iframe = event.target;
|
||||
|
||||
if( iframe && iframe.contentWindow ) {
|
||||
|
||||
let isAttachedToDOM = !!closestParent( event.target, 'html' ),
|
||||
isVisible = !!closestParent( event.target, '.present' );
|
||||
|
||||
if( isAttachedToDOM && isVisible ) {
|
||||
|
||||
// Prefer an explicit global autoplay setting
|
||||
let autoplay = config.autoPlayMedia;
|
||||
|
||||
// If no global setting is available, fall back on the element's
|
||||
// own autoplay setting
|
||||
if( typeof autoplay !== 'boolean' ) {
|
||||
autoplay = iframe.hasAttribute( 'data-autoplay' ) || !!closestParent( iframe, '.slide-background' );
|
||||
}
|
||||
|
||||
// YouTube postMessage API
|
||||
if( /youtube\.com\/embed\//.test( iframe.getAttribute( 'src' ) ) && autoplay ) {
|
||||
iframe.contentWindow.postMessage( '{"event":"command","func":"playVideo","args":""}', '*' );
|
||||
}
|
||||
// Vimeo postMessage API
|
||||
else if( /player\.vimeo\.com\//.test( iframe.getAttribute( 'src' ) ) && autoplay ) {
|
||||
iframe.contentWindow.postMessage( '{"method":"play"}', '*' );
|
||||
}
|
||||
// Generic postMessage API
|
||||
else {
|
||||
iframe.contentWindow.postMessage( 'slide:start', '*' );
|
||||
}
|
||||
|
||||
}
|
||||
|
||||
}
|
||||
|
||||
}
|
||||
|
||||
/**
|
||||
* Stop playback of any embedded content inside of
|
||||
* the targeted slide.
|
||||
*
|
||||
* @param {HTMLElement} element
|
||||
*/
|
||||
stopEmbeddedContent( element, options = {} ) {
|
||||
|
||||
options = extend( {
|
||||
// Defaults
|
||||
unloadIframes: true
|
||||
}, options );
|
||||
|
||||
if( element && element.parentNode ) {
|
||||
// HTML5 media elements
|
||||
toArray( element.querySelectorAll( 'video, audio' ) ).forEach( el => {
|
||||
if( !el.hasAttribute( 'data-ignore' ) && typeof el.pause === 'function' ) {
|
||||
el.setAttribute('data-paused-by-reveal', '');
|
||||
el.pause();
|
||||
}
|
||||
} );
|
||||
|
||||
// Generic postMessage API for non-lazy loaded iframes
|
||||
toArray( element.querySelectorAll( 'iframe' ) ).forEach( el => {
|
||||
if( el.contentWindow ) el.contentWindow.postMessage( 'slide:stop', '*' );
|
||||
el.removeEventListener( 'load', this.startEmbeddedIframe );
|
||||
});
|
||||
|
||||
// YouTube postMessage API
|
||||
toArray( element.querySelectorAll( 'iframe[src*="youtube.com/embed/"]' ) ).forEach( el => {
|
||||
if( !el.hasAttribute( 'data-ignore' ) && el.contentWindow && typeof el.contentWindow.postMessage === 'function' ) {
|
||||
el.contentWindow.postMessage( '{"event":"command","func":"pauseVideo","args":""}', '*' );
|
||||
}
|
||||
});
|
||||
|
||||
// Vimeo postMessage API
|
||||
toArray( element.querySelectorAll( 'iframe[src*="player.vimeo.com/"]' ) ).forEach( el => {
|
||||
if( !el.hasAttribute( 'data-ignore' ) && el.contentWindow && typeof el.contentWindow.postMessage === 'function' ) {
|
||||
el.contentWindow.postMessage( '{"method":"pause"}', '*' );
|
||||
}
|
||||
});
|
||||
|
||||
if( options.unloadIframes === true ) {
|
||||
// Unload lazy-loaded iframes
|
||||
toArray( element.querySelectorAll( 'iframe[data-src]' ) ).forEach( el => {
|
||||
// Only removing the src doesn't actually unload the frame
|
||||
// in all browsers (Firefox) so we set it to blank first
|
||||
el.setAttribute( 'src', 'about:blank' );
|
||||
el.removeAttribute( 'src' );
|
||||
} );
|
||||
}
|
||||
}
|
||||
|
||||
}
|
||||
|
||||
}
|
||||
1000
js/reveal.js
1000
js/reveal.js
File diff suppressed because it is too large
Load Diff
|
|
@ -140,16 +140,22 @@ export const enterFullscreen = () => {
|
|||
*
|
||||
* @param {string} value
|
||||
*/
|
||||
export const injectStyleSheet = ( value ) => {
|
||||
export const createStyleSheet = ( value ) => {
|
||||
|
||||
let tag = document.createElement( 'style' );
|
||||
tag.type = 'text/css';
|
||||
|
||||
if( value && value.length > 0 ) {
|
||||
if( tag.styleSheet ) {
|
||||
tag.styleSheet.cssText = value;
|
||||
}
|
||||
else {
|
||||
tag.appendChild( document.createTextNode( value ) );
|
||||
}
|
||||
document.getElementsByTagName( 'head' )[0].appendChild( tag );
|
||||
}
|
||||
|
||||
document.head.appendChild( tag );
|
||||
|
||||
return tag;
|
||||
|
||||
}
|
||||
Loading…
Reference in New Issue