Limit slide number DOM mutations
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@ -43,14 +43,13 @@ export default class Print {
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// Make sure stretch elements fit on slide
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this.Reveal.layoutSlideContents( slideWidth, slideHeight );
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const slides = queryAll( this.Reveal.getRevealElement(), SLIDES_SELECTOR )
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// Compute slide numbers now, before we start duplicating slides
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let doingSlideNumbers = config.slideNumber && /all|print/i.test( config.showSlideNumber );
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queryAll( this.Reveal.getRevealElement(), SLIDES_SELECTOR ).forEach( function( slide ) {
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slide.setAttribute( 'data-slide-number', this.Reveal.slideNumber.getSlideNumber( slide ) );
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}, this );
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// Slide and slide background layout
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queryAll( this.Reveal.getRevealElement(), SLIDES_SELECTOR ).forEach( function( slide ) {
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slides.forEach( function( slide, index ) {
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// Vertical stacks are not centred since their section
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// children will be
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@ -118,10 +117,11 @@ export default class Print {
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// Inject slide numbers if `slideNumbers` are enabled
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if( doingSlideNumbers ) {
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let numberElement = document.createElement( 'div' );
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const slideNumber = index + 1;
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const numberElement = document.createElement( 'div' );
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numberElement.classList.add( 'slide-number' );
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numberElement.classList.add( 'slide-number-pdf' );
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numberElement.innerHTML = slide.getAttribute( 'data-slide-number' );
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numberElement.innerHTML = slideNumber;
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page.appendChild( numberElement );
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}
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