From 6c0dc635a15edc6b4b09bb3aecdfd90399ae8ceb Mon Sep 17 00:00:00 2001 From: Hakim El Hattab Date: Tue, 13 Aug 2013 09:27:19 -0400 Subject: [PATCH] add util method for applying css transforms --- js/reveal.js | 49 +++++++++++++++++++++++------------------------- js/reveal.min.js | 4 ++-- 2 files changed, 25 insertions(+), 28 deletions(-) diff --git a/js/reveal.js b/js/reveal.js index f0cb6bd5..00097a18 100644 --- a/js/reveal.js +++ b/js/reveal.js @@ -664,6 +664,19 @@ var Reveal = (function(){ } + /** + * Applies a CSS transform to the target element. + */ + function transformElement( element, transform ) { + + element.style.WebkitTransform = transform; + element.style.MozTransform = transform; + element.style.msTransform = transform; + element.style.OTransform = transform; + element.style.transform = transform; + + } + /** * Retrieves the height of the given element by looking * at the position and height of its immediate children. @@ -949,13 +962,7 @@ var Reveal = (function(){ } // Apply scale transform as a fallback else { - var transform = 'translate(-50%, -50%) scale('+ scale +') translate(50%, 50%)'; - - dom.slides.style.WebkitTransform = transform; - dom.slides.style.MozTransform = transform; - dom.slides.style.msTransform = transform; - dom.slides.style.OTransform = transform; - dom.slides.style.transform = transform; + transformElement( dom.slides, 'translate(-50%, -50%) scale('+ scale +') translate(50%, 50%)' ); } // Select all slides, vertical and horizontal @@ -1062,15 +1069,12 @@ var Reveal = (function(){ for( var i = 0, len1 = horizontalSlides.length; i < len1; i++ ) { var hslide = horizontalSlides[i], - hoffset = config.rtl ? -105 : 105, - htransform = 'translateZ(-'+ depth +'px) translate(' + ( ( i - indexh ) * hoffset ) + '%, 0%)'; + hoffset = config.rtl ? -105 : 105; hslide.setAttribute( 'data-index-h', i ); - hslide.style.WebkitTransform = htransform; - hslide.style.MozTransform = htransform; - hslide.style.msTransform = htransform; - hslide.style.OTransform = htransform; - hslide.style.transform = htransform; + + // Apply CSS transform + transformElement( hslide, 'translateZ(-'+ depth +'px) translate(' + ( ( i - indexh ) * hoffset ) + '%, 0%)' ); if( hslide.classList.contains( 'stack' ) ) { @@ -1079,16 +1083,13 @@ var Reveal = (function(){ for( var j = 0, len2 = verticalSlides.length; j < len2; j++ ) { var verticalIndex = i === indexh ? indexv : getPreviousVerticalIndex( hslide ); - var vslide = verticalSlides[j], - vtransform = 'translate(0%, ' + ( ( j - verticalIndex ) * 105 ) + '%)'; + var vslide = verticalSlides[j]; vslide.setAttribute( 'data-index-h', i ); vslide.setAttribute( 'data-index-v', j ); - vslide.style.WebkitTransform = vtransform; - vslide.style.MozTransform = vtransform; - vslide.style.msTransform = vtransform; - vslide.style.OTransform = vtransform; - vslide.style.transform = vtransform; + + // Apply CSS transform + transformElement( vslide, 'translate(0%, ' + ( ( j - verticalIndex ) * 105 ) + '%)' ); // Navigate to this slide on click vslide.addEventListener( 'click', onOverviewSlideClicked, true ); @@ -1154,11 +1155,7 @@ var Reveal = (function(){ element.style.display = ''; // Resets all transforms to use the external styles - element.style.WebkitTransform = ''; - element.style.MozTransform = ''; - element.style.msTransform = ''; - element.style.OTransform = ''; - element.style.transform = ''; + transformElement( element, '' ); element.removeEventListener( 'click', onOverviewSlideClicked, true ); } diff --git a/js/reveal.min.js b/js/reveal.min.js index 388b5896..5c2127b7 100644 --- a/js/reveal.min.js +++ b/js/reveal.min.js @@ -1,8 +1,8 @@ /*! - * reveal.js 2.5.0 (2013-08-13, 08:39) + * reveal.js 2.5.0 (2013-08-13, 09:26) * http://lab.hakim.se/reveal-js * MIT licensed * * Copyright (C) 2013 Hakim El Hattab, http://hakim.se */ -var Reveal=function(){"use strict";function e(e){return t(),Nt||Dt?(window.addEventListener("load",A,!1),u(zt,e),a(),i(),void 0):(document.body.setAttribute("class","no-transforms"),void 0)}function t(){Dt="WebkitPerspective"in document.body.style||"MozPerspective"in document.body.style||"msPerspective"in document.body.style||"OPerspective"in document.body.style||"perspective"in document.body.style,Nt="WebkitTransform"in document.body.style||"MozTransform"in document.body.style||"msTransform"in document.body.style||"OTransform"in document.body.style||"transform"in document.body.style,Ct=navigator.userAgent.match(/(iphone|ipod|android)/gi)}function n(){jt.theme=document.querySelector("#theme"),jt.wrapper=document.querySelector(".reveal"),jt.slides=document.querySelector(".reveal .slides"),jt.slides.classList.add("no-transition"),jt.background=r(jt.wrapper,"div","backgrounds",null),jt.progress=r(jt.wrapper,"div","progress",""),jt.progressbar=jt.progress.querySelector("span"),r(jt.wrapper,"aside","controls",'
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