From 09bf962d32dc9907aac0073fceb9b6887f629a97 Mon Sep 17 00:00:00 2001 From: hakimel Date: Mon, 21 Jan 2013 12:22:30 -0500 Subject: [PATCH] expose layout api method (closes #305), consistent spacing across all functions in core JS, remove unused each() method --- js/reveal.js | 133 ++++++++++++++++++++++++++++++++++++++++------- js/reveal.min.js | 2 +- 2 files changed, 115 insertions(+), 20 deletions(-) diff --git a/js/reveal.js b/js/reveal.js index c1a1dfc..affa4dc 100644 --- a/js/reveal.js +++ b/js/reveal.js @@ -88,6 +88,7 @@ var Reveal = (function(){ 'OPerspective' in document.body.style || 'perspective' in document.body.style, + // Detect support for CSS 2D transforms supports2DTransforms = 'WebkitTransform' in document.body.style || 'MozTransform' in document.body.style || 'msTransform' in document.body.style || @@ -123,6 +124,7 @@ var Reveal = (function(){ * Starts up the presentation if the client is capable. */ function initialize( options ) { + if( ( !supports2DTransforms && !supports3DTransforms ) ) { document.body.setAttribute( 'class', 'no-transforms' ); @@ -151,6 +153,7 @@ var Reveal = (function(){ * not found, it is created. */ function setupDOM() { + // Cache references to key DOM elements dom.theme = document.querySelector( '#theme' ); dom.wrapper = document.querySelector( '.reveal' ); @@ -204,12 +207,14 @@ var Reveal = (function(){ dom.controlsPrev = toArray( document.querySelectorAll( '.navigate-prev' ) ); dom.controlsNext = toArray( document.querySelectorAll( '.navigate-next' ) ); } + } /** * Hides the address bar if we're on a mobile device. */ function hideAddressBar() { + if( navigator.userAgent.match( /(iphone|ipod)/i ) ) { // Give the page some scrollable overflow document.documentElement.style.overflow = 'scroll'; @@ -219,6 +224,7 @@ var Reveal = (function(){ window.addEventListener( 'load', removeAddressBar, false ); window.addEventListener( 'orientationchange', removeAddressBar, false ); } + } /** @@ -229,6 +235,7 @@ var Reveal = (function(){ * will load after reveal.js has been started up. */ function load() { + var scripts = [], scriptsAsync = []; @@ -270,6 +277,7 @@ var Reveal = (function(){ else { proceed(); } + } /** @@ -277,6 +285,7 @@ var Reveal = (function(){ * to the current URL deeplink if there is one. */ function start() { + // Make sure we've got all the DOM elements we need setupDOM(); @@ -305,12 +314,14 @@ var Reveal = (function(){ 'currentSlide': currentSlide } ); }, 1 ); + } /** * Applies the configuration settings from the config object. */ function configure() { + if( supports3DTransforms === false ) { config.transition = 'linear'; } @@ -356,12 +367,14 @@ var Reveal = (function(){ dom.theme.setAttribute( 'href', themeURL ); } } + } /** * Binds all event listeners. */ function addEventListeners() { + document.addEventListener( 'touchstart', onDocumentTouchStart, false ); document.addEventListener( 'touchmove', onDocumentTouchMove, false ); document.addEventListener( 'touchend', onDocumentTouchEnd, false ); @@ -385,12 +398,14 @@ var Reveal = (function(){ dom.controlsPrev.forEach( function( el ) { el.addEventListener( actionEvent, preventAndForward( navigatePrev ), false ); } ); dom.controlsNext.forEach( function( el ) { el.addEventListener( actionEvent, preventAndForward( navigateNext ), false ); } ); } + } /** * Unbinds all event listeners. */ function removeEventListeners() { + document.removeEventListener( 'keydown', onDocumentKeyDown, false ); document.removeEventListener( 'touchstart', onDocumentTouchStart, false ); document.removeEventListener( 'touchmove', onDocumentTouchMove, false ); @@ -411,6 +426,7 @@ var Reveal = (function(){ dom.controlsPrev.forEach( function( el ) { el.removeEventListener( actionEvent, preventAndForward( navigatePrev ), false ); } ); dom.controlsNext.forEach( function( el ) { el.removeEventListener( actionEvent, preventAndForward( navigateNext ), false ); } ); } + } /** @@ -418,22 +434,20 @@ var Reveal = (function(){ * If there's a conflict, object b takes precedence. */ function extend( a, b ) { + for( var i in b ) { a[ i ] = b[ i ]; } + } /** * Converts the target object to an array. */ function toArray( o ) { - return Array.prototype.slice.call( o ); - } - function each( targets, method, args ) { - targets.forEach( function( el ) { - el[method].apply( el, args ); - } ); + return Array.prototype.slice.call( o ); + } /** @@ -444,10 +458,12 @@ var Reveal = (function(){ * @param {Object} b point with x/y properties */ function distanceBetween( a, b ) { + var dx = a.x - b.x, dy = a.y - b.y; return Math.sqrt( dx*dx + dy*dy ); + } /** @@ -458,10 +474,12 @@ var Reveal = (function(){ * after the wrapper has been executed */ function preventAndForward( delegate ) { + return function( event ) { event.preventDefault(); delegate.call( null, event ); }; + } /** @@ -469,9 +487,11 @@ var Reveal = (function(){ * more vertical space ftw. */ function removeAddressBar() { + setTimeout( function() { window.scrollTo( 0, 1 ); }, 0 ); + } /** @@ -479,16 +499,19 @@ var Reveal = (function(){ * reveal DOM element. */ function dispatchEvent( type, properties ) { + var event = document.createEvent( "HTMLEvents", 1, 2 ); event.initEvent( type, true, true ); extend( event, properties ); dom.wrapper.dispatchEvent( event ); + } /** * Wrap all links in 3D goodness. */ function linkify() { + if( supports3DTransforms && !( 'msPerspective' in document.body.style ) ) { var nodes = document.querySelectorAll( SLIDES_SELECTOR + ' a:not(.image)' ); @@ -506,6 +529,7 @@ var Reveal = (function(){ } } } + } /** @@ -525,7 +549,7 @@ var Reveal = (function(){ for( var i = 0, len = slides.length; i < len; i++ ) { var slide = slides[ i ]; - // Don't bother update invisible slides + // Don't bother updating invisible slides if( slide.style.display === 'none' ) { continue; } @@ -545,17 +569,19 @@ var Reveal = (function(){ } /** - * Stores the vertical index of a stack so that the same - * vertical slide can be selected when navigating to and + * Stores the vertical index of a stack so that the same + * vertical slide can be selected when navigating to and * from the stack. - * + * * @param {HTMLElement} stack The vertical stack element * @param {int} v Index to memorize */ function setPreviousVerticalIndex( stack, v ) { + if( stack ) { stack.setAttribute( 'data-previous-indexv', v || 0 ); } + } /** @@ -566,11 +592,13 @@ var Reveal = (function(){ * @param {HTMLElement} stack The vertical stack element */ function getPreviousVerticalIndex( stack ) { + if( stack && stack.classList.contains( 'stack' ) ) { return parseInt( stack.getAttribute( 'data-previous-indexv' ) || 0, 10 ); } return 0; + } /** @@ -593,7 +621,7 @@ var Reveal = (function(){ // Not the pretties solution, but need to let the overview // class apply first so that slides are measured accurately - // before we can positon them + // before we can position them activateOverviewTimeout = setTimeout( function(){ var horizontalSlides = document.querySelectorAll( HORIZONTAL_SLIDES_SELECTOR ); @@ -704,12 +732,14 @@ var Reveal = (function(){ * overview is open, false means it's closed. */ function toggleOverview( override ) { + if( typeof override === 'boolean' ) { override ? activateOverview() : deactivateOverview(); } else { isOverviewActive() ? deactivateOverview() : activateOverview(); } + } /** @@ -719,7 +749,9 @@ var Reveal = (function(){ * false otherwise */ function isOverviewActive() { + return dom.wrapper.classList.contains( 'overview' ); + } /** @@ -729,6 +761,7 @@ var Reveal = (function(){ * @see https://developer.mozilla.org/en-US/docs/DOM/Using_fullscreen_mode */ function enterFullscreen() { + var element = document.body; // Check which implementation is available @@ -740,6 +773,7 @@ var Reveal = (function(){ if( requestMethod ) { requestMethod.apply( element ); } + } /** @@ -747,33 +781,41 @@ var Reveal = (function(){ * black. */ function pause() { + dom.wrapper.classList.add( 'paused' ); + } /** * Exits from the paused mode. */ function resume() { + dom.wrapper.classList.remove( 'paused' ); + } /** * Toggles the paused mode on and off. */ function togglePause() { + if( isPaused() ) { resume(); } else { pause(); } + } /** * Checks if we are currently in the paused mode. */ function isPaused() { + return dom.wrapper.classList.contains( 'paused' ); + } /** @@ -783,23 +825,24 @@ var Reveal = (function(){ * * @param {int} h Horizontal index of the target slide * @param {int} v Vertical index of the target slide - * @param {int} f Optional index of a fragment within the + * @param {int} f Optional index of a fragment within the * target slide to activate */ function slide( h, v, f ) { + // Remember where we were at before previousSlide = currentSlide; // Query all horizontal slides in the deck var horizontalSlides = document.querySelectorAll( HORIZONTAL_SLIDES_SELECTOR ); - // If no vertical index is specified and the upcoming slide is a + // If no vertical index is specified and the upcoming slide is a // stack, resume at its previous vertical index if( v === undefined ) { v = getPreviousVerticalIndex( horizontalSlides[ h ] ); } - // If we were on a vertical stack, remember what vertical index + // If we were on a vertical stack, remember what vertical index // it was on so we can resume at the same position when returning if( previousSlide && previousSlide.parentNode && previousSlide.parentNode.classList.contains( 'stack' ) ) { setPreviousVerticalIndex( previousSlide.parentNode, indexv ); @@ -837,7 +880,7 @@ var Reveal = (function(){ dispatchEvent( state[i] ); } - // Clean up the remaints of the previous state + // Clean up the remains of the previous state while( stateBefore.length ) { document.documentElement.classList.remove( stateBefore.pop() ); } @@ -912,6 +955,7 @@ var Reveal = (function(){ updateControls(); updateProgress(); + } /** @@ -928,6 +972,7 @@ var Reveal = (function(){ * bounds. */ function updateSlides( selector, index ) { + // Select all slides and convert the NodeList result to // an array var slides = toArray( document.querySelectorAll( selector ) ), @@ -1014,6 +1059,7 @@ var Reveal = (function(){ * Updates the progress bar to reflect the current slide. */ function updateProgress() { + // Update progress if enabled if( config.progress && dom.progress ) { @@ -1055,12 +1101,14 @@ var Reveal = (function(){ dom.progressbar.style.width = ( pastCount / ( totalCount - 1 ) ) * window.innerWidth + 'px'; } + } /** * Updates the state of all control/navigation arrows. */ function updateControls() { + if ( config.controls && dom.controls ) { var routes = availableRoutes(); @@ -1085,6 +1133,7 @@ var Reveal = (function(){ if( routes.right || routes.down ) dom.controlsNext.forEach( function( el ) { el.classList.add( 'enabled' ); } ); } + } /** @@ -1093,6 +1142,7 @@ var Reveal = (function(){ * @return {Object} containing four booleans: left/right/up/down */ function availableRoutes() { + var horizontalSlides = document.querySelectorAll( HORIZONTAL_SLIDES_SELECTOR ), verticalSlides = document.querySelectorAll( VERTICAL_SLIDES_SELECTOR ); @@ -1102,12 +1152,14 @@ var Reveal = (function(){ up: indexv > 0, down: indexv < verticalSlides.length - 1 }; + } /** * Reads the current URL (hash) and navigates accordingly. */ function readURL() { + var hash = window.location.hash; // Attempt to parse the hash as either an index or name @@ -1137,16 +1189,18 @@ var Reveal = (function(){ slide( h, v ); } + } /** * Updates the page URL (hash) to reflect the current * state. * - * @param {Number} delay The time in ms to wait before + * @param {Number} delay The time in ms to wait before * writing the hash */ function writeURL( delay ) { + if( config.history ) { // Make sure there's never more than one timeout running @@ -1172,6 +1226,7 @@ var Reveal = (function(){ window.location.hash = url; } } + } /** @@ -1185,6 +1240,7 @@ var Reveal = (function(){ * @return {Object} { h: , v: } */ function getIndices( slide ) { + // By default, return the current indices var h = indexh, v = indexv; @@ -1207,6 +1263,7 @@ var Reveal = (function(){ } return { h: h, v: v }; + } /** @@ -1216,6 +1273,7 @@ var Reveal = (function(){ * false otherwise */ function nextFragment() { + // Vertical slides: if( document.querySelector( VERTICAL_SLIDES_SELECTOR + '.present' ) ) { var verticalFragments = document.querySelectorAll( VERTICAL_SLIDES_SELECTOR + '.present .fragment:not(.visible)' ); @@ -1240,6 +1298,7 @@ var Reveal = (function(){ } return false; + } /** @@ -1249,6 +1308,7 @@ var Reveal = (function(){ * false otherwise */ function previousFragment() { + // Vertical slides: if( document.querySelector( VERTICAL_SLIDES_SELECTOR + '.present' ) ) { var verticalFragments = document.querySelectorAll( VERTICAL_SLIDES_SELECTOR + '.present .fragment.visible' ); @@ -1273,46 +1333,57 @@ var Reveal = (function(){ } return false; + } /** * Cues a new automated slide if enabled in the config. */ function cueAutoSlide() { + clearTimeout( autoSlideTimeout ); // Cue the next auto-slide if enabled if( autoSlide ) { autoSlideTimeout = setTimeout( navigateNext, autoSlide ); } + } function navigateLeft() { + // Prioritize hiding fragments if( availableRoutes().left && isOverviewActive() || previousFragment() === false ) { slide( indexh - 1 ); } + } function navigateRight() { + // Prioritize revealing fragments if( availableRoutes().right && isOverviewActive() || nextFragment() === false ) { slide( indexh + 1 ); } + } function navigateUp() { + // Prioritize hiding fragments if( availableRoutes().up && isOverviewActive() || previousFragment() === false ) { slide( indexh, indexv - 1 ); } + } function navigateDown() { + // Prioritize revealing fragments if( availableRoutes().down && isOverviewActive() || nextFragment() === false ) { slide( indexh, indexv + 1 ); } + } /** @@ -1322,6 +1393,7 @@ var Reveal = (function(){ * 3) Previous horizontal slide */ function navigatePrev() { + // Prioritize revealing fragments if( previousFragment() === false ) { if( availableRoutes().up ) { @@ -1338,12 +1410,14 @@ var Reveal = (function(){ } } } + } /** * Same as #navigatePrev() but navigates forwards. */ function navigateNext() { + // Prioritize revealing fragments if( nextFragment() === false ) { availableRoutes().down ? navigateDown() : navigateRight(); @@ -1352,6 +1426,7 @@ var Reveal = (function(){ // If auto-sliding is enabled we need to cue up // another timeout cueAutoSlide(); + } @@ -1366,12 +1441,13 @@ var Reveal = (function(){ * @param {Object} event */ function onDocumentKeyDown( event ) { - // Check if there's a focused element that could be using + + // Check if there's a focused element that could be using // the keyboard var activeElement = document.activeElement; var hasFocus = !!( document.activeElement && ( document.activeElement.type || document.activeElement.href || document.activeElement.contentEditable !== 'inherit' ) ); - // Disregard the event if there's a focused element or a + // Disregard the event if there's a focused element or a // keyboard modifier key is present if ( hasFocus || event.shiftKey || event.altKey || event.ctrlKey || event.metaKey ) return; @@ -1428,6 +1504,7 @@ var Reveal = (function(){ * enables support for swipe and pinch gestures. */ function onDocumentTouchStart( event ) { + touch.startX = event.touches[0].clientX; touch.startY = event.touches[0].clientY; touch.startCount = event.touches.length; @@ -1443,12 +1520,14 @@ var Reveal = (function(){ y: touch.startY } ); } + } /** * Handler for the document level 'touchmove' event. */ function onDocumentTouchMove( event ) { + // Each touch should only trigger one action if( !touch.handled ) { var currentX = event.touches[0].clientX; @@ -1515,20 +1594,24 @@ var Reveal = (function(){ else if( navigator.userAgent.match( /android/gi ) ) { event.preventDefault(); } + } /** * Handler for the document level 'touchend' event. */ function onDocumentTouchEnd( event ) { + touch.handled = false; + } /** * Handles mouse wheel scrolling, throttled to avoid skipping * multiple slides. */ - function onDocumentMouseScroll( event ){ + function onDocumentMouseScroll( event ) { + clearTimeout( mouseWheelTimeout ); mouseWheelTimeout = setTimeout( function() { @@ -1540,6 +1623,7 @@ var Reveal = (function(){ navigatePrev(); } }, 100 ); + } /** @@ -1549,30 +1633,37 @@ var Reveal = (function(){ * ( clickX / presentationWidth ) * numberOfSlides */ function onProgressClick( event ) { + var slidesTotal = toArray( document.querySelectorAll( HORIZONTAL_SLIDES_SELECTOR ) ).length; var slideIndex = Math.floor( ( event.clientX / dom.wrapper.offsetWidth ) * slidesTotal ); slide( slideIndex ); + } /** * Handler for the window level 'hashchange' event. */ function onWindowHashChange( event ) { + readURL(); + } /** * Handler for the window level 'resize' event. */ function onWindowResize( event ) { + layout(); + } /** * Invoked when a slide is and we're in the overview. */ function onOverviewSlideClicked( event ) { + // TODO There's a bug here where the event listeners are not // removed after deactivating the overview. if( isOverviewActive() ) { @@ -1593,6 +1684,7 @@ var Reveal = (function(){ slide( h, v ); } } + } @@ -1624,6 +1716,9 @@ var Reveal = (function(){ navigatePrev: navigatePrev, navigateNext: navigateNext, + // Forces an update in slide layout + layout: layout, + // Toggles the overview mode on/off toggleOverview: toggleOverview, diff --git a/js/reveal.min.js b/js/reveal.min.js index 414bd63..dfe23c1 100644 --- a/js/reveal.min.js +++ b/js/reveal.min.js @@ -5,4 +5,4 @@ * * Copyright (C) 2011-2012 Hakim El Hattab, http://hakim.se */ -var Reveal=function(){"use strict";function w(e){if(!p&&!h){document.body.setAttribute("class","no-transforms");return}window.addEventListener("load",B,!1),L(i,e),S(),x()}function E(){c.theme=document.querySelector("#theme"),c.wrapper=document.querySelector(".reveal"),c.slides=document.querySelector(".reveal .slides");if(!c.wrapper.querySelector(".progress")&&i.progress){var e=document.createElement("div");e.classList.add("progress"),e.innerHTML="",c.wrapper.appendChild(e)}if(!c.wrapper.querySelector(".controls")&&i.controls){var t=document.createElement("aside");t.classList.add("controls"),t.innerHTML='
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navigator.userAgent.match(/android/gi)&&e.preventDefault()}function dt(e){b.handled=!1}function vt(e){clearTimeout(d),d=setTimeout(function(){var t=e.detail||-e.wheelDelta;t>0?lt():ft()},100)}function mt(e){var n=A(document.querySelectorAll(t)).length,r=Math.floor(e.clientX/c.wrapper.offsetWidth*n);J(r)}function gt(e){Z()}function yt(e){B()}function bt(e){if(U()){e.preventDefault(),q();var t=e.target;while(t&&!t.nodeName.match(/section/gi))t=t.parentNode;if(t.nodeName.match(/section/gi)){var n=parseInt(t.getAttribute("data-index-h"),10),r=parseInt(t.getAttribute("data-index-v"),10);J(n,r)}}}var e=".reveal .slides section",t=".reveal .slides>section",n=".reveal .slides>section.present>section",r=".reveal .slides>section:first-child",i={controls:!0,progress:!0,history:!1,keyboard:!0,overview:!0,center:!0,loop:!1,rtl:!1,autoSlide:0,mouseWheel:!1,rollingLinks:!0,theme:null,transition:"default",dependencies:[]},s=i.autoSlide,o=0,u=0,a,f,l=[],c={},h="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,p="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,d=0,v=0,m=0,g=0,y=0,b={startX:0,startY:0,startSpan:0,startCount:0,handled:!1,threshold:80};return{initialize:w,slide:J,left:st,right:ot,up:ut,down:at,prev:ft,next:lt,prevFragment:rt,nextFragment:nt,navigateTo:J,navigateLeft:st,navigateRight:ot,navigateUp:ut,navigateDown:at,navigatePrev:ft,navigateNext:lt,toggleOverview:R,addEventListeners:C,removeEventListeners:k,getIndices:tt,getPreviousSlide:function(){return a},getCurrentSlide:function(){return f},getQueryHash:function(){var e={};return 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