var PdfExport = ( function( _Reveal ){ var Reveal = _Reveal; var setStylesheet = null; var installAltKeyBindings = null; function getRevealJsPath(){ var regex = /\b[^/]+\/reveal.css$/i; var script = Array.from( document.querySelectorAll( 'link' ) ).find( function( e ){ return e.attributes.href && e.attributes.href.value.search( regex ) >= 0; }); if( !script ){ console.error( 'reveal.css could not be found in included elements. Did you rename this file?' ); return ''; } return script.attributes.href.value.replace( regex, '' ); } function setStylesheet3( pdfExport ){ var link = document.querySelector( '#print' ); if( !link ){ link = document.createElement( 'link' ); link.rel = 'stylesheet'; link.id = 'print'; document.querySelector( 'head' ).appendChild( link ); } var style = 'paper'; if( pdfExport ){ style = 'pdf'; } link.href = getRevealJsPath() + 'css/print/' + style + '.css'; } function setStylesheet4( pdfExport ){ } function installAltKeyBindings3(){ } function installAltKeyBindings4(){ if( isPrintingPDF() ){ var config = Reveal.getConfig(); var shortcut = config.pdfExportShortcut || 'E'; window.addEventListener( 'keydown', function( e ){ if( e.target.nodeName.toUpperCase() == 'BODY' && ( e.key.toUpperCase() == shortcut.toUpperCase() || e.keyCode == shortcut.toUpperCase().charCodeAt( 0 ) ) ){ e.preventDefault(); togglePdfExport(); return false; } }, true ); } } function isPrintingPDF(){ return ( /print-pdf/gi ).test( window.location.search ); } function togglePdfExport(){ var url_doc = new URL( document.URL ); var query_doc = new URLSearchParams( url_doc.searchParams ); if( isPrintingPDF() ){ query_doc.delete( 'print-pdf' ); }else{ query_doc.set( 'print-pdf', '' ); } url_doc.search = ( query_doc.toString() ? '?' + query_doc.toString() : '' ); window.location.href = url_doc.toString(); } function installKeyBindings(){ var config = Reveal.getConfig(); var shortcut = config.pdfExportShortcut || 'E'; Reveal.addKeyBinding({ keyCode: shortcut.toUpperCase().charCodeAt( 0 ), key: shortcut.toUpperCase(), description: 'PDF export mode' }, togglePdfExport ); installAltKeyBindings(); } function install(){ installKeyBindings(); setStylesheet( isPrintingPDF() ); } var Plugin = { } if( Reveal && Reveal.VERSION && Reveal.VERSION.length && Reveal.VERSION[ 0 ] == '3' ){ // reveal 3.x setStylesheet = setStylesheet3; installAltKeyBindings = installAltKeyBindings3; install(); }else{ // must be reveal 4.x setStylesheet = setStylesheet4; installAltKeyBindings = installAltKeyBindings4; Plugin.id = 'pdf-export'; Plugin.init = function( _Reveal ){ Reveal = _Reveal; install(); }; } return Plugin; })( Reveal );