diff options
Diffstat (limited to 'js')
| -rw-r--r-- | js/reveal.js | 149 | ||||
| -rw-r--r-- | js/reveal.min.js | 4 |
2 files changed, 139 insertions, 14 deletions
diff --git a/js/reveal.js b/js/reveal.js index 794911c..9c798f4 100644 --- a/js/reveal.js +++ b/js/reveal.js @@ -68,6 +68,9 @@ var Reveal = (function(){ // by using a data-autoslide attribute on your slides autoSlide: 0, + // Stop auto-sliding after user input + autoSlideStoppable: false, + // Enable slide navigation via mouse wheel mouseWheel: false, @@ -80,6 +83,9 @@ var Reveal = (function(){ // Opens links in an iframe preview overlay previewLinks: false, + // Focuses body when page changes visiblity to ensure keyboard shortcuts work + focusBodyOnPageVisiblityChange: true, + // Theme (see /css/theme) theme: null, @@ -92,6 +98,12 @@ var Reveal = (function(){ // Transition style for full page slide backgrounds backgroundTransition: 'default', // default/linear/none + // Parallax background image + parallaxBackgroundImage: '', // CSS syntax, e.g. "a.jpg" + + // Parallax background size + parallaxBackgroundSize: '', // CSS syntax, e.g. "3000px 2000px" + // Number of slides away from the current that are visible viewDistance: 3, @@ -470,6 +482,28 @@ var Reveal = (function(){ } ); + // Add parallax background if specified + if( config.parallaxBackgroundImage ) { + + dom.background.style.backgroundImage = 'url("' + config.parallaxBackgroundImage + '")'; + dom.background.style.backgroundSize = config.parallaxBackgroundSize; + + // Make sure the below properties are set on the element - these properties are + // needed for proper transitions to be set on the element via CSS. To remove + // annoying background slide-in effect when the presentation starts, apply + // these properties after short time delay + setTimeout( function() { + dom.wrapper.classList.add( 'has-parallax-background' ); + }, 1 ); + + } + else { + + dom.background.style.backgroundImage = ''; + dom.wrapper.classList.remove( 'has-parallax-background' ); + + } + } /** @@ -578,10 +612,28 @@ var Reveal = (function(){ document.addEventListener( 'keydown', onDocumentKeyDown, false ); } - if ( config.progress && dom.progress ) { + if( config.progress && dom.progress ) { dom.progress.addEventListener( 'click', onProgressClicked, false ); } + if( config.focusBodyOnPageVisiblityChange ) { + var visibilityChange; + + if( 'hidden' in document ) { + visibilityChange = 'visibilitychange'; + } + else if( 'msHidden' in document ) { + visibilityChange = 'msvisibilitychange'; + } + else if( 'webkitHidden' in document ) { + visibilityChange = 'webkitvisibilitychange'; + } + + if( visibilityChange ) { + document.addEventListener( visibilityChange, onPageVisibilityChange, false ); + } + } + [ 'touchstart', 'click' ].forEach( function( eventName ) { dom.controlsLeft.forEach( function( el ) { el.addEventListener( eventName, onNavigateLeftClicked, false ); } ); dom.controlsRight.forEach( function( el ) { el.addEventListener( eventName, onNavigateRightClicked, false ); } ); @@ -1055,6 +1107,7 @@ var Reveal = (function(){ } updateProgress(); + updateParallax(); } @@ -1471,7 +1524,6 @@ var Reveal = (function(){ // Store references to the previous and current slides currentSlide = currentVerticalSlides[ indexv ] || currentHorizontalSlide; - // Show fragment, if specified if( typeof f !== 'undefined' ) { var fragments = sortFragments( currentSlide.querySelectorAll( '.fragment' ) ); @@ -1533,6 +1585,7 @@ var Reveal = (function(){ updateControls(); updateProgress(); updateBackground(); + updateParallax(); // Update the URL hash writeURL(); @@ -1825,12 +1878,12 @@ var Reveal = (function(){ } /** - * Updates the background elements to reflect the current + * Updates the background elements to reflect the current * slide. */ function updateBackground() { - // Update the classes of all backgrounds to match the + // Update the classes of all backgrounds to match the // states of their slides (past/present/future) toArray( dom.background.childNodes ).forEach( function( backgroundh, h ) { @@ -1856,6 +1909,42 @@ var Reveal = (function(){ } /** + * Updates the position of the parallax background based + * on the current slide index. + */ + function updateParallax() { + + if( config.parallaxBackgroundImage ) { + + var horizontalSlides = document.querySelectorAll( HORIZONTAL_SLIDES_SELECTOR ), + verticalSlides = document.querySelectorAll( VERTICAL_SLIDES_SELECTOR ); + + var backgroundSize = dom.background.style.backgroundSize.split( ' ' ), + backgroundWidth, backgroundHeight; + + if( backgroundSize.length === 1 ) { + backgroundWidth = backgroundHeight = parseInt( backgroundSize[0], 10 ); + } + else { + backgroundWidth = parseInt( backgroundSize[0], 10 ); + backgroundHeight = parseInt( backgroundSize[1], 10 ); + } + + var slideWidth = dom.background.offsetWidth; + var horizontalSlideCount = horizontalSlides.length; + var horizontalOffset = -( backgroundWidth - slideWidth ) / ( horizontalSlideCount-1 ) * indexh; + + var slideHeight = dom.background.offsetHeight; + var verticalSlideCount = verticalSlides.length; + var verticalOffset = verticalSlideCount > 0 ? -( backgroundHeight - slideHeight ) / ( verticalSlideCount-1 ) * indexv : 0; + + dom.background.style.backgroundPosition = horizontalOffset + 'px ' + verticalOffset + 'px'; + + } + + } + + /** * Determine what available routes there are for navigation. * * @return {Object} containing four booleans: left/right/up/down @@ -2263,11 +2352,21 @@ var Reveal = (function(){ // ----------------------------- EVENTS -------------------------------// // --------------------------------------------------------------------// + /** + * Called by all event handlers that are based on user + * input. + */ + function onUserInput( event ) { + + if( config.autoSlideStoppable ) { + config.autoSlide = 0; + cancelAutoSlide(); + } + + } /** * Handler for the document level 'keydown' event. - * - * @param {Object} event */ function onDocumentKeyDown( event ) { @@ -2367,6 +2466,8 @@ var Reveal = (function(){ // another timeout cueAutoSlide(); + onUserInput( event ); + } /** @@ -2391,6 +2492,8 @@ var Reveal = (function(){ } ); } + onUserInput( event ); + } /** @@ -2497,6 +2600,8 @@ var Reveal = (function(){ onTouchStart( event ); } + onUserInput( event ); + } /** @@ -2560,17 +2665,19 @@ var Reveal = (function(){ slide( slideIndex ); + onUserInput( event ); + } /** * Event handler for navigation control buttons. */ - function onNavigateLeftClicked( event ) { event.preventDefault(); navigateLeft(); } - function onNavigateRightClicked( event ) { event.preventDefault(); navigateRight(); } - function onNavigateUpClicked( event ) { event.preventDefault(); navigateUp(); } - function onNavigateDownClicked( event ) { event.preventDefault(); navigateDown(); } - function onNavigatePrevClicked( event ) { event.preventDefault(); navigatePrev(); } - function onNavigateNextClicked( event ) { event.preventDefault(); navigateNext(); } + function onNavigateLeftClicked( event ) { event.preventDefault(); navigateLeft(); onUserInput(); } + function onNavigateRightClicked( event ) { event.preventDefault(); navigateRight(); onUserInput(); } + function onNavigateUpClicked( event ) { event.preventDefault(); navigateUp(); onUserInput(); } + function onNavigateDownClicked( event ) { event.preventDefault(); navigateDown(); onUserInput(); } + function onNavigatePrevClicked( event ) { event.preventDefault(); navigatePrev(); onUserInput(); } + function onNavigateNextClicked( event ) { event.preventDefault(); navigateNext(); onUserInput(); } /** * Handler for the window level 'hashchange' event. @@ -2591,6 +2698,24 @@ var Reveal = (function(){ } /** + * Handle for the window level 'visibilitychange' event. + */ + function onPageVisibilityChange( event ) { + + var isHidden = document.webkitHidden || + document.msHidden || + document.hidden; + + // If, after clicking a link or similar and we're coming back, + // focus the document.body to ensure we can use keyboard shortcuts + if( isHidden === false && document.activeElement !== document.body ) { + document.activeElement.blur(); + document.body.focus(); + } + + } + + /** * Invoked when a slide is and we're in the overview. */ function onOverviewSlideClicked( event ) { diff --git a/js/reveal.min.js b/js/reveal.min.js index b3985aa..a52094b 100644 --- a/js/reveal.min.js +++ b/js/reveal.min.js @@ -1,8 +1,8 @@ /*! - * reveal.js 2.6.0-dev (2013-09-11, 21:54) + * reveal.js 2.6.0-dev (2013-10-11, 08:40) * 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){return 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