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update reveal.js

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This commit is contained in:
Daniel Weschke
2025-07-07 20:42:39 +02:00
parent 91d4509dac
commit e5beded4a5
119 changed files with 11231 additions and 13895 deletions
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123
scripts/reveal.js/js/controllers/backgrounds.js
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@@ -122,6 +122,7 @@ export default class Backgrounds {
backgroundVideo: slide.getAttribute( 'data-background-video' ),
backgroundIframe: slide.getAttribute( 'data-background-iframe' ),
backgroundColor: slide.getAttribute( 'data-background-color' ),
backgroundGradient: slide.getAttribute( 'data-background-gradient' ),
backgroundRepeat: slide.getAttribute( 'data-background-repeat' ),
backgroundPosition: slide.getAttribute( 'data-background-position' ),
backgroundTransition: slide.getAttribute( 'data-background-transition' ),
@@ -150,7 +151,7 @@ export default class Backgrounds {
if( data.background ) {
// Auto-wrap image urls in url(...)
if( /^(http|file|\/\/)/gi.test( data.background ) || /\.(svg|png|jpg|jpeg|gif|bmp)([?#\s]|$)/gi.test( data.background ) ) {
if( /^(http|file|\/\/)/gi.test( data.background ) || /\.(svg|png|jpg|jpeg|gif|bmp|webp)([?#\s]|$)/gi.test( data.background ) ) {
slide.setAttribute( 'data-background-image', data.background );
}
else {
@@ -161,13 +162,14 @@ export default class Backgrounds {
// Create a hash for this combination of background settings.
// This is used to determine when two slide backgrounds are
// the same.
if( data.background || data.backgroundColor || data.backgroundImage || data.backgroundVideo || data.backgroundIframe ) {
if( data.background || data.backgroundColor || data.backgroundGradient || data.backgroundImage || data.backgroundVideo || data.backgroundIframe ) {
element.setAttribute( 'data-background-hash', data.background +
data.backgroundSize +
data.backgroundImage +
data.backgroundVideo +
data.backgroundIframe +
data.backgroundColor +
data.backgroundGradient +
data.backgroundRepeat +
data.backgroundPosition +
data.backgroundTransition +
@@ -177,6 +179,7 @@ export default class Backgrounds {
// Additional and optional background properties
if( data.backgroundSize ) element.setAttribute( 'data-background-size', data.backgroundSize );
if( data.backgroundColor ) element.style.backgroundColor = data.backgroundColor;
if( data.backgroundGradient ) element.style.backgroundImage = data.backgroundGradient;
if( data.backgroundTransition ) element.setAttribute( 'data-background-transition', data.backgroundTransition );
if( dataPreload ) element.setAttribute( 'data-preload', '' );
@@ -187,10 +190,30 @@ export default class Backgrounds {
if( data.backgroundPosition ) contentElement.style.backgroundPosition = data.backgroundPosition;
if( data.backgroundOpacity ) contentElement.style.opacity = data.backgroundOpacity;
const contrastClass = this.getContrastClass( slide );
if( typeof contrastClass === 'string' ) {
slide.classList.add( contrastClass );
}
}
/**
* Returns a class name that can be applied to a slide to indicate
* if it has a light or dark background.
*
* @param {*} slide
*
* @returns {string|null}
*/
getContrastClass( slide ) {
const element = slide.slideBackgroundElement;
// If this slide has a background color, we add a class that
// signals if it is light or dark. If the slide has no background
// color, no class will be added
let contrastColor = data.backgroundColor;
let contrastColor = slide.getAttribute( 'data-background-color' );
// If no bg color was found, or it cannot be converted by colorToRgb, check the computed background
if( !contrastColor || !colorToRgb( contrastColor ) ) {
@@ -208,14 +231,32 @@ export default class Backgrounds {
// an element with no background
if( rgb && rgb.a !== 0 ) {
if( colorBrightness( contrastColor ) < 128 ) {
slide.classList.add( 'has-dark-background' );
return 'has-dark-background';
}
else {
slide.classList.add( 'has-light-background' );
return 'has-light-background';
}
}
}
return null;
}
/**
* Bubble the 'has-light-background'/'has-dark-background' classes.
*/
bubbleSlideContrastClassToElement( slide, target ) {
[ 'has-light-background', 'has-dark-background' ].forEach( classToBubble => {
if( slide.classList.contains( classToBubble ) ) {
target.classList.add( classToBubble );
}
else {
target.classList.remove( classToBubble );
}
}, this );
}
/**
@@ -227,14 +268,15 @@ export default class Backgrounds {
*/
update( includeAll = false ) {
let config = this.Reveal.getConfig();
let currentSlide = this.Reveal.getCurrentSlide();
let indices = this.Reveal.getIndices();
let currentBackground = null;
// Reverse past/future classes when in RTL mode
let horizontalPast = this.Reveal.getConfig().rtl ? 'future' : 'past',
horizontalFuture = this.Reveal.getConfig().rtl ? 'past' : 'future';
let horizontalPast = config.rtl ? 'future' : 'past',
horizontalFuture = config.rtl ? 'past' : 'future';
// Update the classes of all backgrounds to match the
// states of their slides (past/present/future)
@@ -260,10 +302,12 @@ export default class Backgrounds {
backgroundv.classList.remove( 'past', 'present', 'future' );
if( v < indices.v ) {
const indexv = typeof indices.v === 'number' ? indices.v : 0;
if( v < indexv ) {
backgroundv.classList.add( 'past' );
}
else if ( v > indices.v ) {
else if ( v > indexv ) {
backgroundv.classList.add( 'future' );
}
else {
@@ -278,15 +322,53 @@ export default class Backgrounds {
} );
// The previous background may refer to a DOM element that has
// been removed after a presentation is synced & bgs are recreated
if( this.previousBackground && !this.previousBackground.closest( 'body' ) ) {
this.previousBackground = null;
}
if( currentBackground && this.previousBackground ) {
// Don't transition between identical backgrounds. This
// prevents unwanted flicker.
let previousBackgroundHash = this.previousBackground.getAttribute( 'data-background-hash' );
let currentBackgroundHash = currentBackground.getAttribute( 'data-background-hash' );
if( currentBackgroundHash && currentBackgroundHash === previousBackgroundHash && currentBackground !== this.previousBackground ) {
this.element.classList.add( 'no-transition' );
// If multiple slides have the same background video, carry
// the <video> element forward so that it plays continuously
// across multiple slides
const currentVideo = currentBackground.querySelector( 'video' );
const previousVideo = this.previousBackground.querySelector( 'video' );
if( currentVideo && previousVideo ) {
const currentVideoParent = currentVideo.parentNode;
const previousVideoParent = previousVideo.parentNode;
// Swap the two videos
previousVideoParent.appendChild( currentVideo );
currentVideoParent.appendChild( previousVideo );
}
}
}
const backgroundChanged = currentBackground !== this.previousBackground;
// Stop content inside of previous backgrounds
if( this.previousBackground ) {
if( backgroundChanged && this.previousBackground ) {
this.Reveal.slideContent.stopEmbeddedContent( this.previousBackground, { unloadIframes: !this.Reveal.slideContent.shouldPreload( this.previousBackground ) } );
}
// Start content in the current background
if( currentBackground ) {
if( backgroundChanged && currentBackground ) {
this.Reveal.slideContent.startEmbeddedContent( currentBackground );
@@ -304,14 +386,6 @@ export default class Backgrounds {
}
// Don't transition between identical backgrounds. This
// prevents unwanted flicker.
let previousBackgroundHash = this.previousBackground ? this.previousBackground.getAttribute( 'data-background-hash' ) : null;
let currentBackgroundHash = currentBackground.getAttribute( 'data-background-hash' );
if( currentBackgroundHash && currentBackgroundHash === previousBackgroundHash && currentBackground !== this.previousBackground ) {
this.element.classList.add( 'no-transition' );
}
this.previousBackground = currentBackground;
}
@@ -319,20 +393,13 @@ export default class Backgrounds {
// If there's a background brightness flag for this slide,
// bubble it to the .reveal container
if( currentSlide ) {
[ 'has-light-background', 'has-dark-background' ].forEach( classToBubble => {
if( currentSlide.classList.contains( classToBubble ) ) {
this.Reveal.getRevealElement().classList.add( classToBubble );
}
else {
this.Reveal.getRevealElement().classList.remove( classToBubble );
}
}, this );
this.bubbleSlideContrastClassToElement( currentSlide, this.Reveal.getRevealElement() );
}
// Allow the first background to apply without transition
setTimeout( () => {
this.element.classList.remove( 'no-transition' );
}, 1 );
}, 10 );
}