initial implentation of preview frame, add semi-fade fragment style, data-full-height support
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css/reveal.css
134
css/reveal.css
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css/reveal.min.css
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css/reveal.min.css
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js/reveal.js
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js/reveal.js
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@ -70,6 +70,9 @@ var Reveal = (function(){
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// Apply a 3D roll to links on hover
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rollingLinks: true,
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// Opens links in an iframe preview overlay
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previewLinks: false,
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// Theme (see /css/theme)
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theme: null,
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@ -380,12 +383,21 @@ var Reveal = (function(){
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document.removeEventListener( 'mousewheel', onDocumentMouseScroll, false );
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}
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// 3D links
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// Rolling 3D links
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if( config.rollingLinks ) {
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enable3DLinks();
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enableRollingLinks();
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}
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else {
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disable3DLinks();
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disableRollingLinks();
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}
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// Iframe link previews
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if( config.previewLinks ) {
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enablePreviewLinks();
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}
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else {
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disablePreviewLinks();
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enablePreviewLinks( '[data-preview-link]' );
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}
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// Load the theme in the config, if it's not already loaded
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@ -560,7 +572,7 @@ var Reveal = (function(){
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/**
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* Wrap all links in 3D goodness.
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*/
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function enable3DLinks() {
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function enableRollingLinks() {
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if( supports3DTransforms && !( 'msPerspective' in document.body.style ) ) {
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var anchors = document.querySelectorAll( SLIDES_SELECTOR + ' a:not(.image)' );
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@ -585,7 +597,7 @@ var Reveal = (function(){
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/**
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* Unwrap all 3D links.
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*/
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function disable3DLinks() {
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function disableRollingLinks() {
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var anchors = document.querySelectorAll( SLIDES_SELECTOR + ' a.roll' );
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@ -601,6 +613,110 @@ var Reveal = (function(){
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}
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/**
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* Retrieves the height of the given element by looking
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* at the position and height of its immediate children.
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*/
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function getAbsoluteHeight( element ) {
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var height = 0;
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if( element ) {
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toArray( element.childNodes ).forEach( function( child ) {
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height = Math.max( height, child.offsetTop + child.offsetHeight );
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} );
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}
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return height;
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}
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/**
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* Bind preview frame links.
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*/
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function enablePreviewLinks( selector ) {
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var anchors = toArray( document.querySelectorAll( selector ? selector : 'a' ) );
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anchors.forEach( function( element ) {
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if( /^(http|www)/gi.test( element.getAttribute( 'href' ) ) ) {
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element.addEventListener( 'click', onPreviewLinkClicked, false );
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}
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} );
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}
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/**
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* Unbind preview frame links.
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*/
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function disablePreviewLinks() {
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var anchors = toArray( document.querySelectorAll( 'a' ) );
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anchors.forEach( function( element ) {
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if( /^(http|www)/gi.test( element.getAttribute( 'href' ) ) ) {
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element.removeEventListener( 'click', onPreviewLinkClicked, false );
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}
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} );
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}
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/**
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* Opens a preview window for the target URL.
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*/
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function openPreview( url ) {
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closePreview();
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dom.preview = document.createElement( 'div' );
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dom.preview.classList.add( 'preview-link-overlay' );
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dom.wrapper.appendChild( dom.preview );
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dom.preview.innerHTML = [
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'<header>',
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'<a class="close" href="#"><span class="icon"></span></a>',
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'<a class="external" href="'+ url +'" target="_blank"><span class="icon"></span></a>',
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'</header>',
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'<div class="spinner"></div>',
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'<div class="viewport">',
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'<iframe src="'+ url +'"></iframe>',
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'</div>'
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].join('');
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dom.preview.querySelector( 'iframe' ).addEventListener( 'load', function( event ) {
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dom.preview.classList.add( 'loaded' );
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}, false );
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dom.preview.querySelector( '.close' ).addEventListener( 'click', function( event ) {
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closePreview();
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event.preventDefault();
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}, false );
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dom.preview.querySelector( '.external' ).addEventListener( 'click', function( event ) {
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closePreview();
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}, false );
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setTimeout( function() {
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dom.preview.classList.add( 'visible' );
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}, 1 );
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}
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/**
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* Closes the iframe preview window.
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*/
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function closePreview() {
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if( dom.preview ) {
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dom.preview.setAttribute( 'src', '' );
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dom.preview.parentNode.removeChild( dom.preview );
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dom.preview = null;
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}
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}
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/**
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* Return a sorted fragments list, ordered by an increasing
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* "data-fragment-index" attribute.
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@ -707,7 +823,7 @@ var Reveal = (function(){
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slide.style.top = 0;
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}
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else {
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slide.style.top = Math.max( - ( slide.offsetHeight / 2 ) - 20, -slideHeight / 2 ) + 'px';
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slide.style.top = Math.max( - ( getAbsoluteHeight( slide ) / 2 ) - 20, -slideHeight / 2 ) + 'px';
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}
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}
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else {
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@ -2117,6 +2233,20 @@ var Reveal = (function(){
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}
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/**
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* Handles clicks on links that are set to preview in the
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* iframe overlay.
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*/
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function onPreviewLinkClicked( event ) {
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var url = event.target.getAttribute( 'href' );
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if( url ) {
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openPreview( url );
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event.preventDefault();
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}
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}
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// --------------------------------------------------------------------//
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// ------------------------------- API --------------------------------//
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4
js/reveal.min.js
vendored
4
js/reveal.min.js
vendored
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