From ccbeaf4c32a70cfd89c5af5c8c65b0b90f0c9252 Mon Sep 17 00:00:00 2001 From: Hakim El Hattab Date: Wed, 26 Mar 2014 15:20:12 +0100 Subject: [PATCH] optimization, only declare background creation method once --- js/reveal.js | 103 +++++++++++++++++++++++++---------------------- js/reveal.min.js | 6 +-- 2 files changed, 57 insertions(+), 52 deletions(-) diff --git a/js/reveal.js b/js/reveal.js index ffcb489b..40d26dff 100644 --- a/js/reveal.js +++ b/js/reveal.js @@ -425,71 +425,26 @@ var Reveal = (function(){ dom.background.innerHTML = ''; dom.background.classList.add( 'no-transition' ); - // Helper method for creating a background element for the - // given slide - function _createBackground( slide, container ) { - - var data = { - background: slide.getAttribute( 'data-background' ), - backgroundSize: slide.getAttribute( 'data-background-size' ), - backgroundImage: slide.getAttribute( 'data-background-image' ), - backgroundColor: slide.getAttribute( 'data-background-color' ), - backgroundRepeat: slide.getAttribute( 'data-background-repeat' ), - backgroundPosition: slide.getAttribute( 'data-background-position' ), - backgroundTransition: slide.getAttribute( 'data-background-transition' ) - }; - - var element = document.createElement( 'div' ); - element.className = 'slide-background'; - - if( data.background ) { - // Auto-wrap image urls in url(...) - if( /^(http|file|\/\/)/gi.test( data.background ) || /\.(svg|png|jpg|jpeg|gif|bmp)$/gi.test( data.background ) ) { - element.style.backgroundImage = 'url('+ data.background +')'; - } - else { - element.style.background = data.background; - } - } - - if( data.background || data.backgroundColor || data.backgroundImage ) { - element.setAttribute( 'data-background-hash', data.background + data.backgroundSize + data.backgroundImage + data.backgroundColor + data.backgroundRepeat + data.backgroundPosition + data.backgroundTransition ); - } - - // Additional and optional background properties - if( data.backgroundSize ) element.style.backgroundSize = data.backgroundSize; - if( data.backgroundImage ) element.style.backgroundImage = 'url("' + data.backgroundImage + '")'; - if( data.backgroundColor ) element.style.backgroundColor = data.backgroundColor; - if( data.backgroundRepeat ) element.style.backgroundRepeat = data.backgroundRepeat; - if( data.backgroundPosition ) element.style.backgroundPosition = data.backgroundPosition; - if( data.backgroundTransition ) element.setAttribute( 'data-background-transition', data.backgroundTransition ); - - container.appendChild( element ); - - return element; - - } - // Iterate over all horizontal slides toArray( document.querySelectorAll( HORIZONTAL_SLIDES_SELECTOR ) ).forEach( function( slideh ) { var backgroundStack; if( isPrintingPDF() ) { - backgroundStack = _createBackground( slideh, slideh ); + backgroundStack = createBackground( slideh, slideh ); } else { - backgroundStack = _createBackground( slideh, dom.background ); + backgroundStack = createBackground( slideh, dom.background ); } // Iterate over all vertical slides toArray( slideh.querySelectorAll( 'section' ) ).forEach( function( slidev ) { if( isPrintingPDF() ) { - _createBackground( slidev, slidev ); + createBackground( slidev, slidev ); } else { - _createBackground( slidev, backgroundStack ); + createBackground( slidev, backgroundStack ); } } ); @@ -520,6 +475,56 @@ var Reveal = (function(){ } + /** + * Creates a background for the given slide. + * + * @param {HTMLElement} slide + * @param {HTMLElement} container The element that the background + * should be appended to + */ + function createBackground( slide, container ) { + + var data = { + background: slide.getAttribute( 'data-background' ), + backgroundSize: slide.getAttribute( 'data-background-size' ), + backgroundImage: slide.getAttribute( 'data-background-image' ), + backgroundColor: slide.getAttribute( 'data-background-color' ), + backgroundRepeat: slide.getAttribute( 'data-background-repeat' ), + backgroundPosition: slide.getAttribute( 'data-background-position' ), + backgroundTransition: slide.getAttribute( 'data-background-transition' ) + }; + + var element = document.createElement( 'div' ); + element.className = 'slide-background'; + + if( data.background ) { + // Auto-wrap image urls in url(...) + if( /^(http|file|\/\/)/gi.test( data.background ) || /\.(svg|png|jpg|jpeg|gif|bmp)$/gi.test( data.background ) ) { + element.style.backgroundImage = 'url('+ data.background +')'; + } + else { + element.style.background = data.background; + } + } + + if( data.background || data.backgroundColor || data.backgroundImage ) { + element.setAttribute( 'data-background-hash', data.background + data.backgroundSize + data.backgroundImage + data.backgroundColor + data.backgroundRepeat + data.backgroundPosition + data.backgroundTransition ); + } + + // Additional and optional background properties + if( data.backgroundSize ) element.style.backgroundSize = data.backgroundSize; + if( data.backgroundImage ) element.style.backgroundImage = 'url("' + data.backgroundImage + '")'; + if( data.backgroundColor ) element.style.backgroundColor = data.backgroundColor; + if( data.backgroundRepeat ) element.style.backgroundRepeat = data.backgroundRepeat; + if( data.backgroundPosition ) element.style.backgroundPosition = data.backgroundPosition; + if( data.backgroundTransition ) element.setAttribute( 'data-background-transition', data.backgroundTransition ); + + container.appendChild( element ); + + return element; + + } + /** * Applies the configuration settings from the config * object. May be called multiple times. diff --git a/js/reveal.min.js b/js/reveal.min.js index ba9ab6de..549d755f 100644 --- a/js/reveal.min.js +++ b/js/reveal.min.js @@ -1,9 +1,9 @@ /*! - * reveal.js 2.7.0-dev (2014-03-25, 21:37) + * reveal.js 2.7.0-dev (2014-03-26, 15:19) * http://lab.hakim.se/reveal-js * MIT licensed * * Copyright (C) 2014 Hakim El Hattab, http://hakim.se */ -var Reveal=function(){"use strict";function a(a){if(b(),!kc.transforms2d&&!kc.transforms3d)return document.body.setAttribute("class","no-transforms"),void 0;window.addEventListener("load",B,!1);var d=Reveal.getQueryHash();"undefined"!=typeof d.dependencies&&delete d.dependencies,k(fc,a),k(fc,d),s(),c()}function b(){kc.transforms3d="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,kc.transforms2d="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,kc.requestAnimationFrameMethod=window.requestAnimationFrame||window.webkitRequestAnimationFrame||window.mozRequestAnimationFrame,kc.requestAnimationFrame="function"==typeof kc.requestAnimationFrameMethod,kc.canvas=!!document.createElement("canvas").getContext,_b=navigator.userAgent.match(/(iphone|ipod|android)/gi)}function c(){function a(){e.length&&head.js.apply(null,e),d()}function b(b){head.ready(b.src.match(/([\w\d_\-]*)\.?js$|[^\\\/]*$/i)[0],function(){"function"==typeof b.callback&&b.callback.apply(this),0===--f&&a()})}for(var c=[],e=[],f=0,g=0,h=fc.dependencies.length;h>g;g++){var i=fc.dependencies[g];(!i.condition||i.condition())&&(i.async?e.push(i.src):c.push(i.src),b(i))}c.length?(f=c.length,head.js.apply(null,c)):a()}function d(){e(),T(),h(),gb(),$(!0),setTimeout(function(){jc.slides.classList.remove("no-transition"),gc=!0,u("ready",{indexh:Wb,indexv:Xb,currentSlide:Zb})},1)}function e(){jc.theme=document.querySelector("#theme"),jc.wrapper=document.querySelector(".reveal"),jc.slides=document.querySelector(".reveal .slides"),jc.slides.classList.add("no-transition"),jc.background=f(jc.wrapper,"div","backgrounds",null),jc.progress=f(jc.wrapper,"div","progress",""),jc.progressbar=jc.progress.querySelector("span"),f(jc.wrapper,"aside","controls",'
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