From fcf91ec261db85f0c0e1feca1972505dd687fc3e Mon Sep 17 00:00:00 2001 From: Hakim El Hattab Date: Wed, 30 Oct 2013 13:09:46 -0400 Subject: fix edge case in background transitions (closes #604) --- js/reveal.js | 58 +++++++++++++++++++++++++++++++------------------------- js/reveal.min.js | 4 ++-- 2 files changed, 34 insertions(+), 28 deletions(-) (limited to 'js') diff --git a/js/reveal.js b/js/reveal.js index a69a91f..9218ea9 100644 --- a/js/reveal.js +++ b/js/reveal.js @@ -122,7 +122,7 @@ var Reveal = (function(){ previousSlide, currentSlide, - previousBackgroundHash, + previousBackground, // Slides may hold a data-state attribute which we pick up and apply // as a class to the body. This list contains the combined state of @@ -309,6 +309,9 @@ var Reveal = (function(){ // Read the initial hash readURL(); + // Update all backgrounds + updateBackground( true ); + // Notify listeners that the presentation is ready but use a 1ms // timeout to ensure it's not fired synchronously after #initialize() setTimeout( function() { @@ -444,7 +447,6 @@ var Reveal = (function(){ }; var element = document.createElement( 'div' ); - element.setAttribute( 'data-background-hash', data.background + data.backgroundSize + data.backgroundImage + data.backgroundColor + data.backgroundRepeat + data.backgroundPosition + data.backgroundTransition ); element.className = 'slide-background'; if( data.background ) { @@ -455,6 +457,8 @@ var Reveal = (function(){ else { element.style.background = data.background; } + + element.setAttribute( 'data-background-hash', data.background + data.backgroundSize + data.backgroundImage + data.backgroundColor + data.backgroundRepeat + data.backgroundPosition + data.backgroundTransition ); } // Additional and optional background properties @@ -1640,7 +1644,7 @@ var Reveal = (function(){ updateControls(); updateProgress(); - updateBackground(); + updateBackground( true ); } @@ -1891,8 +1895,11 @@ var Reveal = (function(){ /** * Updates the background elements to reflect the current * slide. + * + * @param {Boolean} includeAll If true, the backgrounds of + * all vertical slides (not just the present) will be updated. */ - function updateBackground() { + function updateBackground( includeAll ) { var currentBackground = null; @@ -1904,51 +1911,50 @@ var Reveal = (function(){ // states of their slides (past/present/future) toArray( dom.background.childNodes ).forEach( function( backgroundh, h ) { - backgroundh.className = 'slide-background '; - if( h < indexh ) { - backgroundh.className += horizontalPast; + backgroundh.className = 'slide-background ' + horizontalPast; } else if ( h > indexh ) { - backgroundh.className += horizontalFuture; + backgroundh.className = 'slide-background ' + horizontalFuture; } else { - backgroundh.className += 'present'; + backgroundh.className = 'slide-background present'; // Store a reference to the current background element currentBackground = backgroundh; } - toArray( backgroundh.childNodes ).forEach( function( backgroundv, v ) { + if( includeAll || h === indexh ) { + toArray( backgroundh.childNodes ).forEach( function( backgroundv, v ) { - backgroundv.className = 'slide-background '; - - if( v < indexv ) { - backgroundv.className += 'past'; - } - else if ( v > indexv ) { - backgroundv.className += 'future'; - } - else { - backgroundv.className += 'present'; + if( v < indexv ) { + backgroundv.className = 'slide-background past'; + } + else if ( v > indexv ) { + backgroundv.className = 'slide-background future'; + } + else { + backgroundv.className = 'slide-background present'; - // Only if this is the present horizontal and vertical slide - if( h === indexh ) currentBackground = backgroundv; - } + // Only if this is the present horizontal and vertical slide + if( h === indexh ) currentBackground = backgroundv; + } - } ); + } ); + } } ); // Don't transition between identical backgrounds. This // prevents unwanted flicker. if( currentBackground ) { + var previousBackgroundHash = previousBackground ? previousBackground.getAttribute( 'data-background-hash' ) : null; var currentBackgroundHash = currentBackground.getAttribute( 'data-background-hash' ); - if( currentBackgroundHash === previousBackgroundHash ) { + if( currentBackgroundHash && currentBackgroundHash === previousBackgroundHash && currentBackground !== previousBackground ) { dom.background.classList.add( 'no-transition' ); } - previousBackgroundHash = currentBackgroundHash; + previousBackground = currentBackground; } // Allow the first background to apply without transition diff --git a/js/reveal.min.js b/js/reveal.min.js index c0e9c27..04b2f23 100644 --- a/js/reveal.min.js +++ b/js/reveal.min.js @@ -1,8 +1,8 @@ /*! - * reveal.js 2.6.0-dev (2013-10-30, 12:19) + * reveal.js 2.6.0-dev (2013-10-30, 13:07) * http://lab.hakim.se/reveal-js * MIT licensed * * Copyright (C) 2013 Hakim El Hattab, http://hakim.se */ -var Reveal=function(){"use strict";function a(a){if(b(),!bc.transforms2d&&!bc.transforms3d)return document.body.setAttribute("class","no-transforms"),void 0;window.addEventListener("load",C,!1);var d=Reveal.getQueryHash();"undefined"!=typeof d.dependencies&&delete d.dependencies,l(Yb,a),l(Yb,d),s(),c()}function b(){bc.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,bc.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,bc.requestAnimationFrameMethod=window.requestAnimationFrame||window.webkitRequestAnimationFrame||window.mozRequestAnimationFrame,bc.requestAnimationFrame="function"==typeof bc.requestAnimationFrameMethod,bc.canvas=!!document.createElement("canvas").getContext,Sb=navigator.userAgent.match(/(iphone|ipod|android)/gi)}function c(){function a(){c.length&&head.js.apply(null,c),d()}for(var b=[],c=[],e=0,f=Yb.dependencies.length;f>e;e++){var g=Yb.dependencies[e];(!g.condition||g.condition())&&(g.async?c.push(g.src):b.push(g.src),"function"==typeof g.callback&&head.ready(g.src.match(/([\w\d_\-]*)\.?js$|[^\\\/]*$/i)[0],g.callback))}b.length?(head.ready(a),head.js.apply(null,b)):a()}function d(){f(),e(),i(),bb(),setTimeout(function(){ac.slides.classList.remove("no-transition"),Zb=!0,u("ready",{indexh:Nb,indexv:Ob,currentSlide:Qb})},1)}function e(){var a=m(document.querySelectorAll(Vb));a.forEach(function(a){var b=m(a.querySelectorAll("section"));b.forEach(function(a,b){b>0&&a.classList.add("future")})})}function f(){ac.theme=document.querySelector("#theme"),ac.wrapper=document.querySelector(".reveal"),ac.slides=document.querySelector(".reveal .slides"),ac.slides.classList.add("no-transition"),ac.background=g(ac.wrapper,"div","backgrounds",null),ac.progress=g(ac.wrapper,"div","progress",""),ac.progressbar=ac.progress.querySelector("span"),g(ac.wrapper,"aside","controls",'
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