merge #2843 with minor tweaks
commit
892c752a4b
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@ -458,6 +458,9 @@ Reveal.on( 'customevent', function() {
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<script src="plugin/highlight/highlight.js"></script>
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<script>
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console.time( 'print' )
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Reveal.addEventListener( 'pdf-ready', () => console.timeEnd( 'print' ) );
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// Also available as an ES module, see:
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// https://revealjs.com/initialization/
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Reveal.initialize({
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File diff suppressed because one or more lines are too long
File diff suppressed because one or more lines are too long
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@ -27,8 +27,6 @@ export default class Backgrounds {
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*/
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create() {
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let printMode = this.Reveal.isPrintingPDF();
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// Clear prior backgrounds
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this.element.innerHTML = '';
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this.element.classList.add( 'no-transition' );
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@ -114,9 +112,24 @@ export default class Backgrounds {
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*/
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sync( slide ) {
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let element = slide.slideBackgroundElement,
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const element = slide.slideBackgroundElement,
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contentElement = slide.slideBackgroundContentElement;
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const data = {
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background: slide.getAttribute( 'data-background' ),
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backgroundSize: slide.getAttribute( 'data-background-size' ),
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backgroundImage: slide.getAttribute( 'data-background-image' ),
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backgroundVideo: slide.getAttribute( 'data-background-video' ),
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backgroundIframe: slide.getAttribute( 'data-background-iframe' ),
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backgroundColor: slide.getAttribute( 'data-background-color' ),
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backgroundRepeat: slide.getAttribute( 'data-background-repeat' ),
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backgroundPosition: slide.getAttribute( 'data-background-position' ),
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backgroundTransition: slide.getAttribute( 'data-background-transition' ),
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backgroundOpacity: slide.getAttribute( 'data-background-opacity' ),
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};
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const dataPreload = slide.hasAttribute( 'data-preload' );
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// Reset the prior background state in case this is not the
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// initial sync
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slide.classList.remove( 'has-dark-background' );
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@ -135,19 +148,6 @@ export default class Backgrounds {
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contentElement.style.opacity = '';
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contentElement.innerHTML = '';
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let data = {
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background: slide.getAttribute( 'data-background' ),
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backgroundSize: slide.getAttribute( 'data-background-size' ),
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backgroundImage: slide.getAttribute( 'data-background-image' ),
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backgroundVideo: slide.getAttribute( 'data-background-video' ),
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backgroundIframe: slide.getAttribute( 'data-background-iframe' ),
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backgroundColor: slide.getAttribute( 'data-background-color' ),
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backgroundRepeat: slide.getAttribute( 'data-background-repeat' ),
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backgroundPosition: slide.getAttribute( 'data-background-position' ),
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backgroundTransition: slide.getAttribute( 'data-background-transition' ),
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backgroundOpacity: slide.getAttribute( 'data-background-opacity' )
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};
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if( data.background ) {
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// Auto-wrap image urls in url(...)
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if( /^(http|file|\/\/)/gi.test( data.background ) || /\.(svg|png|jpg|jpeg|gif|bmp)([?#\s]|$)/gi.test( data.background ) ) {
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@ -179,7 +179,7 @@ export default class Backgrounds {
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if( data.backgroundColor ) element.style.backgroundColor = data.backgroundColor;
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if( data.backgroundTransition ) element.setAttribute( 'data-background-transition', data.backgroundTransition );
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if( slide.hasAttribute( 'data-preload' ) ) element.setAttribute( 'data-preload', '' );
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if( dataPreload ) element.setAttribute( 'data-preload', '' );
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// Background image options are set on the content wrapper
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if( data.backgroundSize ) contentElement.style.backgroundSize = data.backgroundSize;
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@ -201,7 +201,7 @@ export default class Backgrounds {
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}
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if( contrastColor ) {
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let rgb = colorToRgb( contrastColor );
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const rgb = colorToRgb( contrastColor );
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// Ignore fully transparent backgrounds. Some browsers return
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// rgba(0,0,0,0) when reading the computed background color of
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@ -16,20 +16,26 @@ export default class Print {
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* Configures the presentation for printing to a static
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* PDF.
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*/
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setupPDF() {
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async setupPDF() {
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let config = this.Reveal.getConfig();
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const config = this.Reveal.getConfig();
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const slides = queryAll( this.Reveal.getRevealElement(), SLIDES_SELECTOR )
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let slideSize = this.Reveal.getComputedSlideSize( window.innerWidth, window.innerHeight );
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// Compute slide numbers now, before we start duplicating slides
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const doingSlideNumbers = config.slideNumber && /all|print/i.test( config.showSlideNumber );
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const slideSize = this.Reveal.getComputedSlideSize( window.innerWidth, window.innerHeight );
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// Dimensions of the PDF pages
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let pageWidth = Math.floor( slideSize.width * ( 1 + config.margin ) ),
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const pageWidth = Math.floor( slideSize.width * ( 1 + config.margin ) ),
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pageHeight = Math.floor( slideSize.height * ( 1 + config.margin ) );
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// Dimensions of slides within the pages
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let slideWidth = slideSize.width,
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const slideWidth = slideSize.width,
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slideHeight = slideSize.height;
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await new Promise( requestAnimationFrame );
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// Let the browser know what page size we want to print
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createStyleSheet( '@page{size:'+ pageWidth +'px '+ pageHeight +'px; margin: 0px;}' );
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@ -41,29 +47,32 @@ export default class Print {
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document.body.style.height = pageHeight + 'px';
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// Make sure stretch elements fit on slide
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await new Promise( requestAnimationFrame );
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this.Reveal.layoutSlideContents( slideWidth, slideHeight );
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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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// Re-run the slide layout so that r-fit-text is applied based on
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// the printed slide size
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slides.forEach( slide => this.Reveal.slideContent.layout( slide ) );
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// Batch scrollHeight access to prevent layout thrashing
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await new Promise( requestAnimationFrame );
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const slideScrollHeights = slides.map( slide => slide.scrollHeight );
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const pages = [];
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const pageContainer = slides[0].parentNode;
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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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if( slide.classList.contains( 'stack' ) === false ) {
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// Center the slide inside of the page, giving the slide some margin
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let left = ( pageWidth - slideWidth ) / 2,
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top = ( pageHeight - slideHeight ) / 2;
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let left = ( pageWidth - slideWidth ) / 2;
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let top = ( pageHeight - slideHeight ) / 2;
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// Re-run the slide layout so that r-fit-text is applied based on
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// the printed slide size
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this.Reveal.slideContent.layout( slide );
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let contentHeight = slide.scrollHeight;
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const contentHeight = slideScrollHeights[ index ];
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let numberOfPages = Math.max( Math.ceil( contentHeight / pageHeight ), 1 );
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// Adhere to configured pages per slide limit
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@ -76,10 +85,11 @@ export default class Print {
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// Wrap the slide in a page element and hide its overflow
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// so that no page ever flows onto another
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let page = document.createElement( 'div' );
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const page = document.createElement( 'div' );
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pages.push( page );
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page.className = 'pdf-page';
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page.style.height = ( ( pageHeight + config.pdfPageHeightOffset ) * numberOfPages ) + 'px';
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slide.parentNode.insertBefore( page, slide );
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page.appendChild( slide );
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// Position the slide inside of the page
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@ -95,19 +105,19 @@ export default class Print {
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if( config.showNotes ) {
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// Are there notes for this slide?
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let notes = this.Reveal.getSlideNotes( slide );
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const notes = this.Reveal.getSlideNotes( slide );
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if( notes ) {
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let notesSpacing = 8;
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let notesLayout = typeof config.showNotes === 'string' ? config.showNotes : 'inline';
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let notesElement = document.createElement( 'div' );
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const notesSpacing = 8;
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const notesLayout = typeof config.showNotes === 'string' ? config.showNotes : 'inline';
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const notesElement = document.createElement( 'div' );
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notesElement.classList.add( 'speaker-notes' );
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notesElement.classList.add( 'speaker-notes-pdf' );
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notesElement.setAttribute( 'data-layout', notesLayout );
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notesElement.innerHTML = notes;
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if( notesLayout === 'separate-page' ) {
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page.parentNode.insertBefore( notesElement, page.nextSibling );
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pages.push( notesElement );
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}
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else {
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notesElement.style.left = notesSpacing + 'px';
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@ -122,10 +132,11 @@ 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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@ -135,10 +146,9 @@ export default class Print {
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// Each fragment 'group' is an array containing one or more
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// fragments. Multiple fragments that appear at the same time
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// are part of the same group.
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let fragmentGroups = this.Reveal.fragments.sort( page.querySelectorAll( '.fragment' ), true );
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const fragmentGroups = this.Reveal.fragments.sort( page.querySelectorAll( '.fragment' ), true );
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let previousFragmentStep;
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let previousPage;
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fragmentGroups.forEach( function( fragments ) {
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@ -155,11 +165,10 @@ export default class Print {
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}, this );
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// Create a separate page for the current fragment state
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let clonedPage = page.cloneNode( true );
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page.parentNode.insertBefore( clonedPage, ( previousPage || page ).nextSibling );
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const clonedPage = page.cloneNode( true );
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pages.push( clonedPage );
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previousFragmentStep = fragments;
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previousPage = clonedPage;
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}, this );
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@ -182,6 +191,10 @@ export default class Print {
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}, this );
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await new Promise( requestAnimationFrame );
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pages.forEach( page => pageContainer.appendChild( page ) );
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// Notify subscribers that the PDF layout is good to go
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this.Reveal.dispatchEvent({ type: 'pdf-ready' });
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@ -1335,7 +1335,11 @@ export default function( revealElement, options ) {
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}
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// Announce the current slide contents to screen readers
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announceStatus( getStatusText( currentSlide ) );
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// Use animation frame to prevent getComputedStyle in getStatusText
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// from triggering layout mid-frame
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requestAnimationFrame( () => {
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announceStatus( getStatusText( currentSlide ) );
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});
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progress.update();
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controls.update();
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@ -2290,7 +2294,7 @@ export default function( revealElement, options ) {
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// When looping is enabled `routes.down` is always available
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// so we need a separate check for when we've reached the
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// end of a stack and should move horizontally
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if( routes.down && routes.right && config.loop && isLastVerticalSlide( currentSlide ) ) {
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if( routes.down && routes.right && config.loop && isLastVerticalSlide() ) {
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routes.down = false;
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}
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