From 7ee4e0ba66f032dba38261d0ed849bc88ce36baf Mon Sep 17 00:00:00 2001 From: Hakim El Hattab Date: Mon, 11 Feb 2013 12:09:14 -0500 Subject: [PATCH] scale presentations on ipad instead of zoom --- js/reveal.js | 116 ++++++++++++++++++++++++----------------------- js/reveal.min.js | 4 +- 2 files changed, 62 insertions(+), 58 deletions(-) diff --git a/js/reveal.js b/js/reveal.js index 15b695e..fc5164d 100644 --- a/js/reveal.js +++ b/js/reveal.js @@ -552,78 +552,82 @@ var Reveal = (function(){ */ function layout() { - // Available space to scale within - var availableWidth = dom.wrapper.offsetWidth, - availableHeight = dom.wrapper.offsetHeight; + if( dom.wrapper ) { - // Reduce availabe space by margin - availableWidth -= ( availableHeight * config.margin ); - availableHeight -= ( availableHeight * config.margin ); + // Available space to scale within + var availableWidth = dom.wrapper.offsetWidth, + availableHeight = dom.wrapper.offsetHeight; - // Dimensions of the content - var slideWidth = config.width, - slideHeight = config.height; + // Reduce availabe space by margin + availableWidth -= ( availableHeight * config.margin ); + availableHeight -= ( availableHeight * config.margin ); - // Slide width may be a percentage of available width - if( typeof slideWidth === 'string' && /%$/.test( slideWidth ) ) { - slideWidth = parseInt( slideWidth, 10 ) / 100 * availableWidth; - } + // Dimensions of the content + var slideWidth = config.width, + slideHeight = config.height; - // Slide height may be a percentage of available height - if( typeof slideHeight === 'string' && /%$/.test( slideHeight ) ) { - slideHeight = parseInt( slideHeight, 10 ) / 100 * availableHeight; - } + // Slide width may be a percentage of available width + if( typeof slideWidth === 'string' && /%$/.test( slideWidth ) ) { + slideWidth = parseInt( slideWidth, 10 ) / 100 * availableWidth; + } - dom.slides.style.width = slideWidth + 'px'; - dom.slides.style.height = slideHeight + 'px'; + // Slide height may be a percentage of available height + if( typeof slideHeight === 'string' && /%$/.test( slideHeight ) ) { + slideHeight = parseInt( slideHeight, 10 ) / 100 * availableHeight; + } - // Determine scale of content to fit within available space - scale = Math.min( availableWidth / slideWidth, availableHeight / slideHeight ); + dom.slides.style.width = slideWidth + 'px'; + dom.slides.style.height = slideHeight + 'px'; - // Respect max/min scale settings - scale = Math.max( scale, config.minScale ); - scale = Math.min( scale, config.maxScale ); + // Determine scale of content to fit within available space + scale = Math.min( availableWidth / slideWidth, availableHeight / slideHeight ); - // Prefer applying scale via zoom since Chrome blurs scaled content - // with nested transforms - if( typeof dom.slides.style.zoom !== 'undefined' && !navigator.userAgent.match( /(iphone|ipod|android)/gi ) ) { - dom.slides.style.zoom = scale; - } - // Apply scale transform as a fallback - else { - var transform = 'translate(-50%, -50%) scale('+ scale +') translate(50%, 50%)'; + // Respect max/min scale settings + scale = Math.max( scale, config.minScale ); + scale = Math.min( scale, config.maxScale ); - 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; - } + // Prefer applying scale via zoom since Chrome blurs scaled content + // with nested transforms + if( typeof dom.slides.style.zoom !== 'undefined' && !navigator.userAgent.match( /(iphone|ipod|ipad|android)/gi ) ) { + dom.slides.style.zoom = scale; + } + // Apply scale transform as a fallback + else { + var transform = 'translate(-50%, -50%) scale('+ scale +') translate(50%, 50%)'; - if( config.center ) { + 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; + } - // Select all slides, vertical and horizontal - var slides = toArray( document.querySelectorAll( SLIDES_SELECTOR ) ); + if( config.center ) { - // Determine the minimum top offset for slides - var minTop = -slideHeight / 2; + // Select all slides, vertical and horizontal + var slides = toArray( document.querySelectorAll( SLIDES_SELECTOR ) ); - for( var i = 0, len = slides.length; i < len; i++ ) { - var slide = slides[ i ]; + // Determine the minimum top offset for slides + var minTop = -slideHeight / 2; - // Don't bother updating invisible slides - if( slide.style.display === 'none' ) { - continue; + for( var i = 0, len = slides.length; i < len; i++ ) { + var slide = slides[ i ]; + + // Don't bother updating invisible slides + if( slide.style.display === 'none' ) { + continue; + } + + // Vertical stacks are not centered since their section + // children will be + if( slide.classList.contains( 'stack' ) ) { + slide.style.top = 0; + } + else { + slide.style.top = Math.max( - ( slide.offsetHeight / 2 ) - 20, minTop ) + 'px'; + } } - // Vertical stacks are not centered since their section - // children will be - if( slide.classList.contains( 'stack' ) ) { - slide.style.top = 0; - } - else { - slide.style.top = Math.max( - ( slide.offsetHeight / 2 ) - 20, minTop ) + 'px'; - } } } diff --git a/js/reveal.min.js b/js/reveal.min.js index eff798f..405a878 100644 --- a/js/reveal.min.js +++ b/js/reveal.min.js @@ -1,8 +1,8 @@ /*! - * reveal.js 2.3 (2013-02-09, 19:08) + * reveal.js 2.3 (2013-02-11, 10:53) * 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){if(!d&&!p){document.body.setAttribute("class","no-transforms");return}window.addEventListener("load",H,!1),A(i,e),x(),T()}function S(){h.theme=document.querySelector("#theme"),h.wrapper=document.querySelector(".reveal"),h.slides=document.querySelector(".reveal .slides");if(!h.wrapper.querySelector(".progress")&&i.progress){var e=document.createElement("div");e.classList.add("progress"),e.innerHTML="",h.wrapper.appendChild(e)}if(!h.wrapper.querySelector(".controls")&&i.controls){var t=document.createElement("aside");t.classList.add("controls"),t.innerHTML='
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