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PDF export: add option to export one page per fragment #1955

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PDF export: add option to export one page per fragment #1955

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a2cf23b
PDF export: add option to export one page per fragment
koehlma Aug 8, 2017
08e0f5e
fix indent: replace spaces with tabs
koehlma Aug 8, 2017
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42 changes: 38 additions & 4 deletions js/reveal.js
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Original file line number Diff line number Diff line change
Expand Up @@ -727,14 +727,39 @@
numberElement.innerHTML = formatSlideNumber( slideNumberH, '.', slideNumberV );
page.appendChild( numberElement );
}

// Copy page and show fragments one after another
if ( isPrintingPDFFragments() ) {

var numberOfFragments = toArray( page.querySelectorAll( '.fragment' ) ).length;

for ( var currentFragment = 0; currentFragment < numberOfFragments; currentFragment++ ) {
var clonedPage = page.cloneNode( true );
page.parentNode.insertBefore( clonedPage, page.nextSibling );

toArray( sortFragments( clonedPage.querySelectorAll( '.fragment' ))).forEach( function ( fragment, fragmentIndex ) {
if ( fragmentIndex <= currentFragment ) {
fragment.classList.add( 'visible' );
} else {
fragment.classList.remove( 'visible' );
}
} );

page = clonedPage;
}

}
// Show all fragments
else {
toArray( page.querySelectorAll( '.fragment' ) ).forEach( function( fragment ) {
fragment.classList.add( 'visible' );
} );
}

}

} );

// Show all fragments
toArray( dom.wrapper.querySelectorAll( SLIDES_SELECTOR + ' .fragment' ) ).forEach( function( fragment ) {
fragment.classList.add( 'visible' );
} );

// Notify subscribers that the PDF layout is good to go
dispatchEvent( 'pdf-ready' );
Expand Down Expand Up @@ -1497,6 +1522,15 @@

}

/**
* Check if this instance is being used to print a PDF with fragments.
*/
function isPrintingPDFFragments() {

return ( /print-pdf-fragments/gi ).test( window.location.search );

}

/**
* Hides the address bar if we're on a mobile device.
*/
Expand Down