presentations

Presentations
Log | Files | Refs

print-pdf.js (1878B)

      1 /**
      2  * phantomjs script for printing presentations to PDF.
      3  *
      4  * Example:
      5  * phantomjs print-pdf.js "http://revealjs.com?print-pdf" reveal-demo.pdf
      6  *
      7  * @author Manuel Bieh (https://github.com/manuelbieh)
      8  * @author Hakim El Hattab (https://github.com/hakimel)
      9  * @author Manuel Riezebosch (https://github.com/riezebosch)
     10  */
     11 
     12 // html2pdf.js
     13 var system = require( 'system' );
     14 
     15 var probePage = new WebPage();
     16 var printPage = new WebPage();
     17 
     18 var inputFile = system.args[1] || 'index.html?print-pdf';
     19 var outputFile = system.args[2] || 'slides.pdf';
     20 
     21 if( outputFile.match( /\.pdf$/gi ) === null ) {
     22 	outputFile += '.pdf';
     23 }
     24 
     25 console.log( 'Export PDF: Reading reveal.js config [1/4]' );
     26 
     27 probePage.open( inputFile, function( status ) {
     28 
     29 	console.log( 'Export PDF: Preparing print layout [2/4]' );
     30 
     31 	var config = probePage.evaluate( function() {
     32 		return Reveal.getConfig();
     33 	} );
     34 
     35 	if( config ) {
     36 
     37 		printPage.paperSize = {
     38 			width: Math.floor( config.width * ( 1 + config.margin ) ),
     39 			height: Math.floor( config.height * ( 1 + config.margin ) ),
     40 			border: 0
     41 		};
     42 
     43 		printPage.open( inputFile, function( status ) {
     44 			console.log( 'Export PDF: Preparing pdf [3/4]')
     45 			printPage.evaluate( function() {
     46 				Reveal.isReady() ? window.callPhantom() : Reveal.addEventListener( 'pdf-ready', window.callPhantom );
     47 			} );
     48 		} );
     49 
     50 		printPage.onCallback = function( data ) {
     51 			// For some reason we need to "jump the queue" for syntax highlighting to work.
     52 			// See: http://stackoverflow.com/a/3580132/129269
     53 			setTimeout( function() {
     54 				console.log( 'Export PDF: Writing file [4/4]' );
     55 				printPage.render( outputFile );
     56 				console.log( 'Export PDF: Finished successfully!' );
     57 				phantom.exit();
     58 			}, 0 );
     59 		};
     60 	}
     61 	else {
     62 
     63 		console.log( 'Export PDF: Unable to read reveal.js config. Make sure the input address points to a reveal.js page.' );
     64 		phantom.exit( 1 );
     65 
     66 	}
     67 } );