diff options
Diffstat (limited to 'js/reveal.js')
| -rw-r--r-- | js/reveal.js | 121 |
1 files changed, 68 insertions, 53 deletions
diff --git a/js/reveal.js b/js/reveal.js index e246db7..b64f7c6 100644 --- a/js/reveal.js +++ b/js/reveal.js @@ -84,6 +84,10 @@ // Enable the slide overview mode overview: true, + // Disables the default reveal.js slide layout so that you can use + // custom CSS layout + disableLayout: false, + // Vertical centering of slides center: true, @@ -196,6 +200,13 @@ // to PDF, unlimited by default pdfMaxPagesPerSlide: Number.POSITIVE_INFINITY, + // Offset used to reduce the height of content within exported PDF pages. + // This exists to account for environment differences based on how you + // print to PDF. CLI printing options, like phantomjs and wkpdf, can end + // on precisely the total height of the document whereas in-browser + // printing has to end one pixel before. + pdfPageHeightOffset: -1, + // Number of slides away from the current that are visible viewDistance: 3, @@ -661,8 +672,8 @@ var slideSize = getComputedSlideSize( window.innerWidth, window.innerHeight ); // Dimensions of the PDF pages - var pageWidth = Math.ceil( slideSize.width * ( 1 + config.margin ) ), - pageHeight = Math.ceil( slideSize.height * ( 1 + config.margin ) ); + var pageWidth = Math.floor( slideSize.width * ( 1 + config.margin ) ), + pageHeight = Math.floor( slideSize.height * ( 1 + config.margin ) ); // Dimensions of slides within the pages var slideWidth = slideSize.width, @@ -719,7 +730,7 @@ // so that no page ever flows onto another var page = document.createElement( 'div' ); page.className = 'pdf-page'; - page.style.height = ( pageHeight * numberOfPages ) + 'px'; + page.style.height = ( ( pageHeight + config.pdfPageHeightOffset ) * numberOfPages ) + 'px'; slide.parentNode.insertBefore( page, slide ); page.appendChild( slide ); @@ -1846,76 +1857,80 @@ if( dom.wrapper && !isPrintingPDF() ) { - var size = getComputedSlideSize(); + if( !config.disableLayout ) { - // Layout the contents of the slides - layoutSlideContents( config.width, config.height ); + var size = getComputedSlideSize(); - dom.slides.style.width = size.width + 'px'; - dom.slides.style.height = size.height + 'px'; + // Layout the contents of the slides + layoutSlideContents( config.width, config.height ); - // Determine scale of content to fit within available space - scale = Math.min( size.presentationWidth / size.width, size.presentationHeight / size.height ); + dom.slides.style.width = size.width + 'px'; + dom.slides.style.height = size.height + 'px'; - // Respect max/min scale settings - scale = Math.max( scale, config.minScale ); - scale = Math.min( scale, config.maxScale ); + // Determine scale of content to fit within available space + scale = Math.min( size.presentationWidth / size.width, size.presentationHeight / size.height ); - // Don't apply any scaling styles if scale is 1 - if( scale === 1 ) { - dom.slides.style.zoom = ''; - dom.slides.style.left = ''; - dom.slides.style.top = ''; - dom.slides.style.bottom = ''; - dom.slides.style.right = ''; - transformSlides( { layout: '' } ); - } - else { - // Prefer zoom for scaling up so that content remains crisp. - // Don't use zoom to scale down since that can lead to shifts - // in text layout/line breaks. - if( scale > 1 && features.zoom ) { - dom.slides.style.zoom = scale; + // Respect max/min scale settings + scale = Math.max( scale, config.minScale ); + scale = Math.min( scale, config.maxScale ); + + // Don't apply any scaling styles if scale is 1 + if( scale === 1 ) { + dom.slides.style.zoom = ''; dom.slides.style.left = ''; dom.slides.style.top = ''; dom.slides.style.bottom = ''; dom.slides.style.right = ''; transformSlides( { layout: '' } ); } - // Apply scale transform as a fallback else { - dom.slides.style.zoom = ''; - dom.slides.style.left = '50%'; - dom.slides.style.top = '50%'; - dom.slides.style.bottom = 'auto'; - dom.slides.style.right = 'auto'; - transformSlides( { layout: 'translate(-50%, -50%) scale('+ scale +')' } ); + // Prefer zoom for scaling up so that content remains crisp. + // Don't use zoom to scale down since that can lead to shifts + // in text layout/line breaks. + if( scale > 1 && features.zoom ) { + dom.slides.style.zoom = scale; + dom.slides.style.left = ''; + dom.slides.style.top = ''; + dom.slides.style.bottom = ''; + dom.slides.style.right = ''; + transformSlides( { layout: '' } ); + } + // Apply scale transform as a fallback + else { + dom.slides.style.zoom = ''; + dom.slides.style.left = '50%'; + dom.slides.style.top = '50%'; + dom.slides.style.bottom = 'auto'; + dom.slides.style.right = 'auto'; + transformSlides( { layout: 'translate(-50%, -50%) scale('+ scale +')' } ); + } } - } - // Select all slides, vertical and horizontal - var slides = toArray( dom.wrapper.querySelectorAll( SLIDES_SELECTOR ) ); + // Select all slides, vertical and horizontal + var slides = toArray( dom.wrapper.querySelectorAll( SLIDES_SELECTOR ) ); - for( var i = 0, len = slides.length; i < len; i++ ) { - var slide = slides[ i ]; + for( var i = 0, len = slides.length; i < len; i++ ) { + var slide = slides[ i ]; - // Don't bother updating invisible slides - if( slide.style.display === 'none' ) { - continue; - } + // Don't bother updating invisible slides + if( slide.style.display === 'none' ) { + continue; + } - if( config.center || slide.classList.contains( 'center' ) ) { - // Vertical stacks are not centred since their section - // children will be - if( slide.classList.contains( 'stack' ) ) { - slide.style.top = 0; + if( config.center || slide.classList.contains( 'center' ) ) { + // Vertical stacks are not centred since their section + // children will be + if( slide.classList.contains( 'stack' ) ) { + slide.style.top = 0; + } + else { + slide.style.top = Math.max( ( size.height - slide.scrollHeight ) / 2, 0 ) + 'px'; + } } else { - slide.style.top = Math.max( ( size.height - slide.scrollHeight ) / 2, 0 ) + 'px'; + slide.style.top = ''; } - } - else { - slide.style.top = ''; + } } |