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revert from flexbox for pdf centering, use js for PDF setup

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This commit is contained in:
Hakim El Hattab
2014-04-23 19:47:30 +02:00
parent 54ca9edeed
commit 646203f038
3 changed files with 86 additions and 49 deletions
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75
js/reveal.js
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@ -333,6 +333,11 @@ var Reveal = (function(){
// Update all backgrounds
updateBackground( true );
// Special setup and config is required when printing to PDF
if( isPrintingPDF() ) {
setupPDF();
}
// Notify listeners that the presentation is ready but use a 1ms
// timeout to ensure it's not fired synchronously after #initialize()
setTimeout( function() {
@ -401,6 +406,66 @@ var Reveal = (function(){
}
/**
* Configures the presentation for printing to a static
* PDF.
*/
function setupPDF() {
// Dimensions of the content
var pageWidth = 1122,
pageHeight = 867;
var slideWidth = 960,
slideHeight = 700;
document.body.classList.add( 'print-pdf' );
document.body.style.width = pageWidth + 'px';
document.body.style.height = pageHeight + 'px';
// Slide and slide background layout
toArray( document.querySelectorAll( SLIDES_SELECTOR ) ).forEach( function( slide ) {
// Vertical stacks are not centred since their section
// children will be
if( slide.classList.contains( 'stack' ) ) {
slide.style.top = 0;
}
else {
var left = ( pageWidth - slideWidth ) / 2;
var top = ( pageHeight - slideHeight ) / 2;
if( config.center || slide.classList.contains( 'center' ) ) {
top = Math.max( ( pageHeight - getAbsoluteHeight( slide ) ) / 2, 0 );
}
slide.style.left = left + 'px';
slide.style.top = top + 'px';
slide.style.width = slideWidth + 'px';
slide.style.height = slideHeight + 'px';
if( slide.scrollHeight > slideHeight ) {
slide.style.overflow = 'hidden';
}
var background = slide.querySelector( '.slide-background' );
if( background ) {
background.style.width = pageWidth + 'px';
background.style.height = pageHeight + 'px';
background.style.top = -top + 'px';
background.style.left = -left + 'px';
}
}
} );
// Show all fragments
toArray( document.querySelectorAll( SLIDES_SELECTOR + ' .fragment' ) ).forEach( function( fragment ) {
fragment.classList.add( 'visible' );
} );
}
/**
* Creates an HTML element and returns a reference to it.
* If the element already exists the existing instance will
@ -428,9 +493,7 @@ var Reveal = (function(){
*/
function createBackgrounds() {
if( isPrintingPDF() ) {
document.body.classList.add( 'print-pdf' );
}
var printMode = isPrintingPDF();
// Clear prior backgrounds
dom.background.innerHTML = '';
@ -441,7 +504,7 @@ var Reveal = (function(){
var backgroundStack;
if( isPrintingPDF() ) {
if( printMode ) {
backgroundStack = createBackground( slideh, slideh );
}
else {
@ -451,7 +514,7 @@ var Reveal = (function(){
// Iterate over all vertical slides
toArray( slideh.querySelectorAll( 'section' ) ).forEach( function( slidev ) {
if( isPrintingPDF() ) {
if( printMode ) {
createBackground( slidev, slidev );
}
else {
@ -887,7 +950,7 @@ var Reveal = (function(){
if( typeof child.offsetTop === 'number' && child.style ) {
// Count # of abs children
if( child.style.position === 'absolute' ) {
if( window.getComputedStyle( child ).position === 'absolute' ) {
absoluteChildren += 1;
}