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Limit slide number DOM mutations

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This commit is contained in:
Jeroen Hermans 2020-11-15 22:01:50 +01:00
parent aaa7c02b5c
commit 3d701edc71
1 changed files with 6 additions and 6 deletions
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12
js/controllers/print.js
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@ -43,14 +43,13 @@ export default class Print {
// Make sure stretch elements fit on slide
this.Reveal.layoutSlideContents( slideWidth, slideHeight );
const slides = queryAll( this.Reveal.getRevealElement(), SLIDES_SELECTOR )
// Compute slide numbers now, before we start duplicating slides
let doingSlideNumbers = config.slideNumber && /all|print/i.test( config.showSlideNumber );
queryAll( this.Reveal.getRevealElement(), SLIDES_SELECTOR ).forEach( function( slide ) {
slide.setAttribute( 'data-slide-number', this.Reveal.slideNumber.getSlideNumber( slide ) );
}, this );
// Slide and slide background layout
queryAll( this.Reveal.getRevealElement(), SLIDES_SELECTOR ).forEach( function( slide ) {
slides.forEach( function( slide, index ) {
// Vertical stacks are not centred since their section
// children will be
@ -118,10 +117,11 @@ export default class Print {
// Inject slide numbers if `slideNumbers` are enabled
if( doingSlideNumbers ) {
let numberElement = document.createElement( 'div' );
const slideNumber = index + 1;
const numberElement = document.createElement( 'div' );
numberElement.classList.add( 'slide-number' );
numberElement.classList.add( 'slide-number-pdf' );
numberElement.innerHTML = slide.getAttribute( 'data-slide-number' );
numberElement.innerHTML = slideNumber;
page.appendChild( numberElement );
}