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abide by configured width/height when printing to pdf

This commit is contained in:
Hakim El Hattab 2014-04-26 21:41:54 +02:00
parent a522312999
commit ddfb0aa86f
2 changed files with 21 additions and 11 deletions
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5
css/print/pdf.css
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@ -30,11 +30,6 @@ html {
overflow: visible;
}
@page {
size: letter landscape;
margin: 0;
}
/* SECTION 2: Remove any elements not needed in print.
This would include navigation, ads, sidebars, etc. */
.nestedarrow,

27
js/reveal.js
View File

@ -413,21 +413,19 @@ var Reveal = (function(){
*/
function setupPDF() {
// The aspect ratio of pages when saving to PDF in Chrome,
// we need to abide by this ratio when determining the pixel
// size of our pages
var pageAspectRatio = 1.295;
var slideSize = getComputedSlideSize( window.innerWidth, window.innerHeight );
// Dimensions of the PDF pages
var pageWidth = Math.round( slideSize.width * ( 1 + config.margin ) ),
pageHeight = Math.round( pageWidth / pageAspectRatio );
pageHeight = Math.round( slideSize.height * ( 1 + config.margin ) );
// Dimensions of slides within the pages
var slideWidth = slideSize.width,
slideHeight = slideSize.height;
// Let the browser know what page size we want to print
injectStyleSheet( '@page{size:'+ pageWidth +'px '+ pageHeight +'px; margin: 0;}' );
document.body.classList.add( 'print-pdf' );
document.body.style.width = pageWidth + 'px';
document.body.style.height = pageHeight + 'px';
@ -944,6 +942,23 @@ var Reveal = (function(){
}
/**
* Injects the given CSS styles into the DOM.
*/
function injectStyleSheet( value ) {
var tag = document.createElement( 'style' );
tag.type = 'text/css';
if( tag.styleSheet ) {
tag.styleSheet.cssText = value;
}
else {
tag.appendChild( document.createTextNode( value ) );
}
document.getElementsByTagName( 'head' )[0].appendChild( tag );
}
/**
* Retrieves the height of the given element by looking
* at the position and height of its immediate children.