revamp pdf printing to support per-slide backgrounds (closes #453)
This commit is contained in:
Hakim El Hattab
parent
ff35847fc6
commit
4d164dc5b6
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@ -17,8 +17,9 @@
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body {
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font-size: 18pt;
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width: auto;
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height: auto;
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width: 297mm;
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height: 229mm;
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margin: 0 auto !important;
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border: 0;
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padding: 0;
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float: none !important;
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@ -88,10 +89,8 @@ ul, ol, div, p {
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left: auto;
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top: auto;
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margin-left: auto;
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margin-right: auto;
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margin-top: auto;
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padding: auto;
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margin: 0 !important;
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padding: 0 !important;
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overflow: visible;
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display: block;
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@ -113,18 +112,18 @@ ul, ol, div, p {
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page-break-after: always !important;
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visibility: visible !important;
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position: static !important;
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position: relative !important;
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width: 100% !important;
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height: auto !important;
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min-height: initial !important;
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height: 229mm !important;
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min-height: 229mm !important;
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display: block !important;
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overflow: visible !important;
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overflow: hidden !important;
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left: 0 !important;
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top: 0 !important;
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margin-left: 0px !important;
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margin-top: 50px !important;
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padding: 20px 0px !important;
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margin: 0 !important;
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padding: 2cm 1cm 0 1cm !important;
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box-sizing: border-box !important;
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opacity: 1 !important;
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@ -139,9 +138,11 @@ ul, ol, div, p {
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transform: none !important;
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}
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.reveal section.stack {
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margin: 0px !important;
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padding: 0px !important;
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margin: 0 !important;
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padding: 0 !important;
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page-break-after: avoid !important;
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height: auto !important;
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min-height: auto !important;
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}
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.reveal section .fragment {
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opacity: 1 !important;
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@ -152,6 +153,17 @@ ul, ol, div, p {
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-ms-transform: none !important;
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transform: none !important;
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}
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.reveal section .slide-background {
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position: absolute;
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top: 0;
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left: 0;
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width: 100%;
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z-index: 0;
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}
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.reveal section>* {
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position: relative;
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z-index: 1;
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}
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.reveal img {
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box-shadow: none;
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}
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@ -1309,7 +1309,7 @@ body {
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width: 100%;
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height: 100%;
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}
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.reveal>.background div {
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.reveal .slide-background {
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position: absolute;
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width: 100%;
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height: 100%;
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@ -1327,13 +1327,18 @@ body {
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-o-transition: all 650ms ease;
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transition: all 650ms ease;
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}
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.reveal>.background div.present {
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.reveal .slide-background.present {
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opacity: 1;
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visibility: visible;
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}
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.print-pdf .reveal .slide-background {
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opacity: 1 !important;
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visibility: visible !important;
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}
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/* Linear sliding transition style */
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.reveal[data-background-transition=linear]>.background div {
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.reveal[data-background-transition=linear]>.background .slide-background {
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opacity: 1;
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-webkit-backface-visibility: hidden;
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@ -1341,14 +1346,14 @@ body {
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-ms-backface-visibility: hidden;
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backface-visibility: hidden;
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}
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.reveal[data-background-transition=linear]>.background div.past {
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.reveal[data-background-transition=linear]>.background .slide-background.past {
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-webkit-transform: translate(-100%, 0);
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-moz-transform: translate(-100%, 0);
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-ms-transform: translate(-100%, 0);
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-o-transform: translate(-100%, 0);
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transform: translate(-100%, 0);
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}
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.reveal[data-background-transition=linear]>.background div.future {
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.reveal[data-background-transition=linear]>.background .slide-background.future {
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-webkit-transform: translate(100%, 0);
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-moz-transform: translate(100%, 0);
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-ms-transform: translate(100%, 0);
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@ -1356,14 +1361,14 @@ body {
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transform: translate(100%, 0);
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}
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.reveal[data-background-transition=linear]>.background div>div.past {
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.reveal[data-background-transition=linear]>.background .slide-background>.slide-background.past {
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-webkit-transform: translate(0, -100%);
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-moz-transform: translate(0, -100%);
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-ms-transform: translate(0, -100%);
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-o-transform: translate(0, -100%);
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transform: translate(0, -100%);
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}
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.reveal[data-background-transition=linear]>.background div>div.future {
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.reveal[data-background-transition=linear]>.background .slide-background>.slide-background.future {
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-webkit-transform: translate(0, 100%);
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-moz-transform: translate(0, 100%);
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-ms-transform: translate(0, 100%);
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@ -1373,13 +1378,13 @@ body {
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/* Global transition speed settings */
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.reveal[data-transition-speed="fast"]>.background div {
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.reveal[data-transition-speed="fast"]>.background .slide-background {
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-webkit-transition-duration: 300ms;
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-moz-transition-duration: 300ms;
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-ms-transition-duration: 300ms;
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transition-duration: 300ms;
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}
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.reveal[data-transition-speed="slow"]>.background div {
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.reveal[data-transition-speed="slow"]>.background .slide-background {
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-webkit-transition-duration: 900ms;
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-moz-transition-duration: 900ms;
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-ms-transition-duration: 900ms;
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10
index.html
10
index.html
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@ -201,19 +201,13 @@
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<img width="178" height="238" src="https://s3.amazonaws.com/hakim-static/reveal-js/arrow.png" alt="Down arrow">
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</a>
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</section>
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<section data-background="https://s3.amazonaws.com/hakim-static/reveal-js/cornify.gif">
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<section data-background="https://s3.amazonaws.com/hakim-static/reveal-js/arrow.png">
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<h2>Image Backgrounds</h2>
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<pre><code><section data-background="image.png"></code></pre>
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<a href="#" class="image navigate-down">
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<img width="178" height="238" src="https://s3.amazonaws.com/hakim-static/reveal-js/arrow.png" alt="Down arrow">
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</a>
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</section>
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<section data-background="https://s3.amazonaws.com/hakim-static/reveal-js/cornify.gif" data-background-repeat="repeat" data-background-size="100px">
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<section data-background="https://s3.amazonaws.com/hakim-static/reveal-js/arrow.png" data-background-repeat="repeat" data-background-size="100px">
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<h2>Repeated Image Backgrounds</h2>
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<pre><code style="word-wrap: break-word;"><section data-background="image.png" data-background-repeat="repeat" data-background-size="100px"></code></pre>
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<a href="#" class="image navigate-next">
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<img width="178" height="238" src="https://s3.amazonaws.com/hakim-static/reveal-js/arrow.png" alt="Up arrow" style="-webkit-transform: rotate(-90deg);">
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</a>
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</section>
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</section>
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34
js/reveal.js
34
js/reveal.js
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@ -254,6 +254,10 @@ var Reveal = (function(){
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*/
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function createBackgrounds() {
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if( isPrintingPDF() ) {
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document.body.classList.add( 'print-pdf' );
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}
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// Clear prior backgrounds
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dom.background.innerHTML = '';
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dom.background.classList.add( 'no-transition' );
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@ -271,6 +275,7 @@ var Reveal = (function(){
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};
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var element = document.createElement( 'div' );
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element.className = 'slide-background';
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if( data.background ) {
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// Auto-wrap image urls in url(...)
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@ -297,12 +302,24 @@ var Reveal = (function(){
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// Iterate over all horizontal slides
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toArray( document.querySelectorAll( HORIZONTAL_SLIDES_SELECTOR ) ).forEach( function( slideh ) {
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var backgroundStack = _createBackground( slideh, dom.background );
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var backgroundStack;
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if( isPrintingPDF() ) {
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backgroundStack = _createBackground( slideh, slideh );
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}
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else {
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backgroundStack = _createBackground( slideh, dom.background );
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}
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// Iterate over all vertical slides
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toArray( slideh.querySelectorAll( 'section' ) ).forEach( function( slidev ) {
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if( isPrintingPDF() ) {
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_createBackground( slidev, slidev );
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}
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else {
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_createBackground( slidev, backgroundStack );
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}
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} );
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@ -597,6 +614,15 @@ var Reveal = (function(){
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}
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/**
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* Checks if this instance is being used to print a PDF.
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*/
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function isPrintingPDF() {
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return ( /print-pdf/gi ).test( window.location.search );
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}
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/**
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* Causes the address bar to hide on mobile devices,
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* more vertical space ftw.
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@ -713,7 +739,7 @@ var Reveal = (function(){
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*/
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function layout() {
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if( dom.wrapper ) {
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if( dom.wrapper && !isPrintingPDF() ) {
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// Available space to scale within
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var availableWidth = dom.wrapper.offsetWidth,
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@ -1491,11 +1517,11 @@ var Reveal = (function(){
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// states of their slides (past/present/future)
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toArray( dom.background.childNodes ).forEach( function( backgroundh, h ) {
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backgroundh.className = ( h < indexh ? 'past' : h > indexh ? 'future' : 'present' );
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backgroundh.className = 'slide-background ' + ( h < indexh ? 'past' : h > indexh ? 'future' : 'present' );
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toArray( backgroundh.childNodes ).forEach( function( backgroundv, v ) {
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backgroundv.className = ( v < indexv ? 'past' : v > indexv ? 'future' : 'present' );
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backgroundv.className = 'slide-background ' + ( v < indexv ? 'past' : v > indexv ? 'future' : 'present' );
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} );
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