reader mode; named deeplink support, stay on same slide when reader mode is turned on/off

dist/reveal.esm.js

@@ -5,5 +5,5 @@
 *
 * Copyright (C) 2011-2023 Hakim El Hattab, https://hakim.se
 */
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 //# sourceMappingURL=reveal.esm.js.map

dist/reveal.esm.js.map

@@ -1 +1 @@
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i < nodes.length; i++ ) {\n\t\tlet testNode = nodes[i];\nLine truncated
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i < nodes.length; i++ ) {\n\t\tlet testNode = nodes[i];\nLine truncated

dist/reveal.js

@@ -5,5 +5,5 @@
 *
 * Copyright (C) 2011-2023 Hakim El Hattab, https://hakim.se
 */
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+!function(e,t){"object"==typeof exports&&"undefined"!=typeof module?module.exports=t():"function"==typeof define&&define.amd?define(t):(e="undefined"!=typeof globalThis?globalThis:e||self).Reveal=t()}(this,(function(){"use strict";const e=(e,t)=>{for(let i in t)e[i]=t[i];return e},t=(e,t)=>Array.from(e.querySelectorAll(t)),i=(e,t,i)=>{i?e.classList.add(t):e.classList.remove(t)},s=e=>{if("string"==typeof e){if("null"===e)return null;if("true"===e)return!0;if("false"===e)return!1;if(e.match(/^-?[\d\.]+$/))return parseFloat(e)}return e},a=(e,t)=>{e.style.transform=t},n=(e,t)=>{let i=e.matches||e.matchesSelector||e.msMatchesSelector;return!(!i||!i.call(e,t))},r=(e,t)=>{if("function"==typeof e.closest)return e.closest(t);for(;e;){if(n(e,t))return e;e=e.parentNode}return null},o=(e,t,i,s="")=>{let a=e.querySelectorAll("."+i);for(let t=0;t<a.length;t++){let i=a[t];if(i.parentNode===e)return i}let n=document.createElement(t);return n.className=i,n.innerHTML=s,e.appendChild(n),n},l=e=>{let t=document.createElement("style");return t.type="text/css",e&&e.length>0&&(t.styleSheet?t.styleSheet.cssText=e:t.appendChild(document.createTextNode(e))),document.head.appendChild(t),t},d=()=>{let e={};location.search.replace(/[A-Z0-9]+?=([\w\.%-]*)/gi,(t=>{e[t.split("=").shift()]=t.split("=").pop()}));for(let t in e){let i=e[t];e[t]=s(unescape(i))}return void 0!==e.dependencies&&delete e.dependencies,e},c=(e,t=0)=>{if(e){let i,s=e.style.height;return e.style.height="0px",e.parentNode.style.height="auto",i=t-e.parentNode.offsetHeight,e.style.height=s+"px",e.parentNode.style.removeProperty("height"),i}return t},h={mp4:"video/mp4",m4a:"video/mp4",ogv:"video/ogg",mpeg:"video/mpeg",webm:"video/webm"},u=navigator.userAgent,g=/(iphone|ipod|ipad|android)/gi.test(u)||"MacIntel"===navigator.platform&&navigator.maxTouchPoints>1;/chrome/i.test(u)&&/edge/i.test(u);const v=/android/gi.test(u);var p={};Object.defineProperty(p,"__esModule",{value:!0});var m=Object.assign||function(e){for(var 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 //# sourceMappingURL=reveal.js.map

dist/reveal.js.map

@@ -1 +1 @@
-{"version":3,"file":"reveal.js","sources":["../js/utils/util.js","../js/utils/device.js","../node_modules/fitty/dist/fitty.module.js","../js/controllers/slidecontent.js","../js/controllers/slidenumber.js","../js/controllers/jumptoslide.js","../js/utils/color.js","../js/controllers/backgrounds.js","../js/utils/constants.js","../js/controllers/autoanimate.js","../js/controllers/fragments.js","../js/controllers/overview.js","../js/controllers/keyboard.js","../js/controllers/location.js","../js/controllers/controls.js","../js/controllers/progress.js","../js/controllers/pointer.js","../js/utils/loader.js","../js/controllers/plugins.js","../js/controllers/reader.js","../js/controllers/print.js","../js/controllers/touch.js","../js/controllers/focus.js","../js/controllers/notes.js","../js/components/playback.js","../js/config.js","../js/reveal.js","../js/index.js"],"sourcesContent":["/**\n * Extend object a with the properties of object b.\n * If there's a conflict, object b takes precedence.\n *\n * @param {object} a\n * @param {object} b\n */\nexport const extend = ( a, b ) => {\n\n\tfor( let i in b ) {\n\t\ta[ i ] = b[ i ];\n\t}\n\n\treturn a;\n\n}\n\n/**\n * querySelectorAll but returns an Array.\n */\nexport const queryAll = ( el, selector ) => {\n\n\treturn Array.from( el.querySelectorAll( selector ) );\n\n}\n\n/**\n * classList.toggle() with cross browser support\n */\nexport const toggleClass = ( el, className, value ) => {\n\tif( value ) {\n\t\tel.classList.add( className );\n\t}\n\telse {\n\t\tel.classList.remove( className );\n\t}\n}\n\n/**\n * Utility for deserializing a value.\n *\n * @param {*} value\n * @return {*}\n */\nexport const deserialize = ( value ) => {\n\n\tif( typeof value === 'string' ) {\n\t\tif( value === 'null' ) return null;\n\t\telse if( value === 'true' ) return true;\n\t\telse if( value === 'false' ) return false;\n\t\telse if( value.match( /^-?[\\d\\.]+$/ ) ) return parseFloat( value );\n\t}\n\n\treturn value;\n\n}\n\n/**\n * Measures the distance in pixels between point a\n * and point b.\n *\n * @param {object} a point with x/y properties\n * @param {object} b point with x/y properties\n *\n * @return {number}\n */\nexport const distanceBetween = ( a, b ) => {\n\n\tlet dx = a.x - b.x,\n\t\tdy = a.y - b.y;\n\n\treturn Math.sqrt( dx*dx + dy*dy );\n\n}\n\n/**\n * Applies a CSS transform to the target element.\n *\n * @param {HTMLElement} element\n * @param {string} transform\n */\nexport const transformElement = ( element, transform ) => {\n\n\telement.style.transform = transform;\n\n}\n\n/**\n * Element.matches with IE support.\n *\n * @param {HTMLElement} target The element to match\n * @param {String} selector The CSS selector to match\n * the element against\n *\n * @return {Boolean}\n */\nexport const matches = ( target, selector ) => {\n\n\tlet matchesMethod = target.matches || target.matchesSelector || target.msMatchesSelector;\n\n\treturn !!( matchesMethod && matchesMethod.call( target, selector ) );\n\n}\n\n/**\n * Find the closest parent that matches the given\n * selector.\n *\n * @param {HTMLElement} target The child element\n * @param {String} selector The CSS selector to match\n * the parents against\n *\n * @return {HTMLElement} The matched parent or null\n * if no matching parent was found\n */\nexport const closest = ( target, selector ) => {\n\n\t// Native Element.closest\n\tif( typeof target.closest === 'function' ) {\n\t\treturn target.closest( selector );\n\t}\n\n\t// Polyfill\n\twhile( target ) {\n\t\tif( matches( target, selector ) ) {\n\t\t\treturn target;\n\t\t}\n\n\t\t// Keep searching\n\t\ttarget = target.parentNode;\n\t}\n\n\treturn null;\n\n}\n\n/**\n * Handling the fullscreen functionality via the fullscreen API\n *\n * @see http://fullscreen.spec.whatwg.org/\n * @see https://developer.mozilla.org/en-US/docs/DOM/Using_fullscreen_mode\n */\nexport const enterFullscreen = element => {\n\n\telement = element || document.documentElement;\n\n\t// Check which implementation is available\n\tlet requestMethod = element.requestFullscreen ||\n\t\t\t\t\t\telement.webkitRequestFullscreen ||\n\t\t\t\t\t\telement.webkitRequestFullScreen ||\n\t\t\t\t\t\telement.mozRequestFullScreen ||\n\t\t\t\t\t\telement.msRequestFullscreen;\n\n\tif( requestMethod ) {\n\t\trequestMethod.apply( element );\n\t}\n\n}\n\n/**\n * Creates an HTML element and returns a reference to it.\n * If the element already exists the existing instance will\n * be returned.\n *\n * @param {HTMLElement} container\n * @param {string} tagname\n * @param {string} classname\n * @param {string} innerHTML\n *\n * @return {HTMLElement}\n */\nexport const createSingletonNode = ( container, tagname, classname, innerHTML='' ) => {\n\n\t// Find all nodes matching the description\n\tlet nodes = container.querySelectorAll( '.' + classname );\n\n\t// Check all matches to find one which is a direct child of\n\t// the specified container\n\tfor( let i = 0; i < nodes.length; i++ ) {\n\t\tlet testNode = nodes[i];\n\t\tLine truncated
+{"version":3,"file":"reveal.js","sources":["../js/utils/util.js","../js/utils/device.js","../node_modules/fitty/dist/fitty.module.js","../js/controllers/slidecontent.js","../js/controllers/slidenumber.js","../js/controllers/jumptoslide.js","../js/utils/color.js","../js/controllers/backgrounds.js","../js/utils/constants.js","../js/controllers/autoanimate.js","../js/controllers/fragments.js","../js/controllers/overview.js","../js/controllers/keyboard.js","../js/controllers/location.js","../js/controllers/controls.js","../js/controllers/progress.js","../js/controllers/pointer.js","../js/utils/loader.js","../js/controllers/plugins.js","../js/controllers/reader.js","../js/controllers/print.js","../js/controllers/touch.js","../js/controllers/focus.js","../js/controllers/notes.js","../js/components/playback.js","../js/config.js","../js/reveal.js","../js/index.js"],"sourcesContent":["/**\n * Extend object a with the properties of object b.\n * If there's a conflict, object b takes precedence.\n *\n * @param {object} a\n * @param {object} b\n */\nexport const extend = ( a, b ) => {\n\n\tfor( let i in b ) {\n\t\ta[ i ] = b[ i ];\n\t}\n\n\treturn a;\n\n}\n\n/**\n * querySelectorAll but returns an Array.\n */\nexport const queryAll = ( el, selector ) => {\n\n\treturn Array.from( el.querySelectorAll( selector ) );\n\n}\n\n/**\n * classList.toggle() with cross browser support\n */\nexport const toggleClass = ( el, className, value ) => {\n\tif( value ) {\n\t\tel.classList.add( className );\n\t}\n\telse {\n\t\tel.classList.remove( className );\n\t}\n}\n\n/**\n * Utility for deserializing a value.\n *\n * @param {*} value\n * @return {*}\n */\nexport const deserialize = ( value ) => {\n\n\tif( typeof value === 'string' ) {\n\t\tif( value === 'null' ) return null;\n\t\telse if( value === 'true' ) return true;\n\t\telse if( value === 'false' ) return false;\n\t\telse if( value.match( /^-?[\\d\\.]+$/ ) ) return parseFloat( value );\n\t}\n\n\treturn value;\n\n}\n\n/**\n * Measures the distance in pixels between point a\n * and point b.\n *\n * @param {object} a point with x/y properties\n * @param {object} b point with x/y properties\n *\n * @return {number}\n */\nexport const distanceBetween = ( a, b ) => {\n\n\tlet dx = a.x - b.x,\n\t\tdy = a.y - b.y;\n\n\treturn Math.sqrt( dx*dx + dy*dy );\n\n}\n\n/**\n * Applies a CSS transform to the target element.\n *\n * @param {HTMLElement} element\n * @param {string} transform\n */\nexport const transformElement = ( element, transform ) => {\n\n\telement.style.transform = transform;\n\n}\n\n/**\n * Element.matches with IE support.\n *\n * @param {HTMLElement} target The element to match\n * @param {String} selector The CSS selector to match\n * the element against\n *\n * @return {Boolean}\n */\nexport const matches = ( target, selector ) => {\n\n\tlet matchesMethod = target.matches || target.matchesSelector || target.msMatchesSelector;\n\n\treturn !!( matchesMethod && matchesMethod.call( target, selector ) );\n\n}\n\n/**\n * Find the closest parent that matches the given\n * selector.\n *\n * @param {HTMLElement} target The child element\n * @param {String} selector The CSS selector to match\n * the parents against\n *\n * @return {HTMLElement} The matched parent or null\n * if no matching parent was found\n */\nexport const closest = ( target, selector ) => {\n\n\t// Native Element.closest\n\tif( typeof target.closest === 'function' ) {\n\t\treturn target.closest( selector );\n\t}\n\n\t// Polyfill\n\twhile( target ) {\n\t\tif( matches( target, selector ) ) {\n\t\t\treturn target;\n\t\t}\n\n\t\t// Keep searching\n\t\ttarget = target.parentNode;\n\t}\n\n\treturn null;\n\n}\n\n/**\n * Handling the fullscreen functionality via the fullscreen API\n *\n * @see http://fullscreen.spec.whatwg.org/\n * @see https://developer.mozilla.org/en-US/docs/DOM/Using_fullscreen_mode\n */\nexport const enterFullscreen = element => {\n\n\telement = element || document.documentElement;\n\n\t// Check which implementation is available\n\tlet requestMethod = element.requestFullscreen ||\n\t\t\t\t\t\telement.webkitRequestFullscreen ||\n\t\t\t\t\t\telement.webkitRequestFullScreen ||\n\t\t\t\t\t\telement.mozRequestFullScreen ||\n\t\t\t\t\t\telement.msRequestFullscreen;\n\n\tif( requestMethod ) {\n\t\trequestMethod.apply( element );\n\t}\n\n}\n\n/**\n * Creates an HTML element and returns a reference to it.\n * If the element already exists the existing instance will\n * be returned.\n *\n * @param {HTMLElement} container\n * @param {string} tagname\n * @param {string} classname\n * @param {string} innerHTML\n *\n * @return {HTMLElement}\n */\nexport const createSingletonNode = ( container, tagname, classname, innerHTML='' ) => {\n\n\t// Find all nodes matching the description\n\tlet nodes = container.querySelectorAll( '.' + classname );\n\n\t// Check all matches to find one which is a direct child of\n\t// the specified container\n\tfor( let i = 0; i < nodes.length; i++ ) {\n\t\tlet testNode = nodes[i];\n\t\tLine truncated

examples/reader-mode.html

@@ -54,7 +54,7 @@
 						<li class="fragment">Fragment three</li>
 					</ul>
 				</section>
-				<section data-background-gradient="linear-gradient(to bottom, #283b95, #17b2c3)">
+				<section data-background-gradient="linear-gradient(to bottom, #283b95, #17b2c3)" id="gradient-bg">
 					<h2>Gradient Backgrounds</h2>
 				</section>
 				<section data-auto-animate>
@@ -89,12 +89,14 @@
 						}
 					</script></code></pre>
 				</section>
-				<section data-background="https://static.slid.es/reveal/image-placeholder.png">
+				<section class="stack">
+          <section data-background="https://static.slid.es/reveal/image-placeholder.png" id="image-bg">
             <h2>Image Backgrounds</h2>
             <pre><code class="hljs html">&lt;section data-background="image.png"&gt;</code></pre>
           </section>
           <section data-background-video="https://s3.amazonaws.com/static.slid.es/site/homepage/v1/homepage-video-editor.mp4,https://s3.amazonaws.com/static.slid.es/site/homepage/v1/homepage-video-editor.webm">
             <h2>Video background</h2>
+          </section>
         </section>
 				<section><h2>The end</h2></section>
 
@@ -109,6 +111,7 @@
 		<script>
       Reveal.initialize({
         view: 'reader',
+        hash: true,
 
 				plugins: [ RevealMarkdown, RevealHighlight, RevealNotes ]
 			});

js/config.js

@@ -278,7 +278,7 @@ export default {
 
 	// Responsively activate the reader mode when we reach the specified
 	// width (in pixels)
-	readerActivationWidth: null,
+	readerActivationWidth: 800,
 
 	// The maximum number of pages a single slide can expand onto when printing
 	// to PDF, unlimited by default

js/controllers/location.js

@@ -64,7 +64,7 @@ export default class Location {
 			try {
 				slide = document
 					.getElementById( decodeURIComponent( name ) )
-					.closest('.slides>section, .slides>section>section');
+					.closest('.slides section');
 			}
 			catch ( error ) { }
 

js/controllers/reader.js

@@ -1,4 +1,4 @@
-import { SLIDES_SELECTOR } from '../utils/constants.js'
+import { HORIZONTAL_SLIDES_SELECTOR, SLIDES_SELECTOR } from '../utils/constants.js'
 import { queryAll, createStyleSheet } from '../utils/util.js'
 
 /**
@@ -26,12 +26,14 @@ export default class Reader {
 
 		if( this.active ) return;
 
+		const state = this.Reveal.getState();
+
 		this.active = true;
 
 		this.slideHTMLBeforeActivation = this.Reveal.getSlidesElement().innerHTML;
 
 		const viewportElement = this.Reveal.getViewportElement();
-		const slides = queryAll( this.Reveal.getRevealElement(), SLIDES_SELECTOR );
+		const horizontalSlides = queryAll( this.Reveal.getRevealElement(), HORIZONTAL_SLIDES_SELECTOR );
 
 		viewportElement.classList.add( 'loading-scroll-mode', 'reveal-reader' );
 		viewportElement.addEventListener( 'scroll', this.onScroll );
@@ -44,14 +46,10 @@ export default class Reader {
 		}
 
 		const pageElements = [];
-		const pageContainer = slides[0].parentNode;
+		const pageContainer = horizontalSlides[0].parentNode;
 
-		// Slide and slide background layout
+		function createPage( slide, h, v ) {
-		slides.forEach( function( slide ) {
 
-			// Vertical stacks are not centred since their section
-			// children will be
-			if( slide.classList.contains( 'stack' ) === false ) {
 			// Wrap the slide in a page element and hide its overflow
 			// so that no page ever flows onto another
 			const page = document.createElement( 'div' );
@@ -75,6 +73,9 @@ export default class Reader {
 
 			slide.classList.remove( 'past', 'future' );
 
+			if( typeof h === 'number' ) slide.setAttribute( 'data-index-h', h );
+			if( typeof v === 'number' ) slide.setAttribute( 'data-index-v', v );
+
 			if( slide.slideBackgroundElement ) {
 				slide.slideBackgroundElement.remove( 'past', 'future' );
 				contentContainer.insertBefore( slide.slideBackgroundElement, slide );
@@ -82,6 +83,18 @@ export default class Reader {
 
 		}
 
+		// Slide and slide background layout
+		horizontalSlides.forEach( ( horizontalSlide, h ) => {
+
+			if( this.Reveal.isVerticalStack( horizontalSlide ) ) {
+				horizontalSlide.querySelectorAll( 'section' ).forEach( ( verticalSlide, v ) => {
+					createPage( verticalSlide, h, v );
+				});
+			}
+			else {
+				createPage( horizontalSlide, h, 0 );
+			}
+
 		}, this );
 
 		// Remove leftover stacks
@@ -93,6 +106,7 @@ export default class Reader {
 		this.Reveal.slideContent.layout( this.Reveal.getSlidesElement() );
 
 		this.Reveal.layout();
+		this.Reveal.setState( state );
 
 		viewportElement.classList.remove( 'loading-scroll-mode' );
 
@@ -109,6 +123,8 @@ export default class Reader {
 
 		if( !this.active ) return;
 
+		const state = this.Reveal.getState();
+
 		this.active = false;
 
 		const viewportElement = this.Reveal.getViewportElement();
@@ -119,8 +135,7 @@ export default class Reader {
 		this.Reveal.getSlidesElement().innerHTML = this.slideHTMLBeforeActivation;
 		this.Reveal.sync();
 
-		// TODO Navigate to the slide that is currently scrolled into view
+		this.Reveal.setState( state );
-		this.Reveal.slide( 0 );
 
 	}
 
@@ -144,6 +159,14 @@ export default class Reader {
 
 	}
 
+	getSlideByIndices( h, v ) {
+
+		const page = this.pages.find( page => page.indexh === h && page.indexv === v );
+
+		return page ? page.slideElement : null;
+
+	}
+
 	/**
 	 * Updates our reader pages to match the latest configuration and
 	 * presentation size.
@@ -177,9 +200,12 @@ export default class Reader {
 				slideElement: pageElement.querySelector( 'section' ),
 				backgroundElement: pageElement.querySelector( '.slide-background' ),
 				top: pageElement.offsetTop,
-				scrollTriggers: []
+				scrollTriggers: [],
 			};
 
+			page.indexh = parseInt( page.slideElement.getAttribute( 'data-index-h' ), 10 );
+			page.indexv = parseInt( page.slideElement.getAttribute( 'data-index-v' ), 10 );
+
 			page.slideElement.style.width = slideSize.width + 'px';
 			page.slideElement.style.height = config.center === true ? '' : slideSize.height + 'px';
 
@@ -302,7 +328,7 @@ export default class Reader {
 					page.pageElement.classList.add( 'present' );
 					page.slideElement.classList.add( 'present' );
 
-					this.Reveal.setCurrentReaderPage( pageIndex, page.pageElement );
+					this.Reveal.setCurrentReaderPage( page.pageElement, page.indexh, page.indexv );
 					this.Reveal.slideContent.startEmbeddedContent( page.slideElement );
 
 					if( page.backgroundElement ) {

js/reveal.js

@@ -208,14 +208,15 @@ export default function( revealElement, options ) {
 		// Updates the presentation to match the current configuration values
 		configure();
 
-		// Read the initial hash
-		location.readURL();
-
 		// Create slide backgrounds
 		backgrounds.update( true );
 
+		// Activate the print/reader mode if configured
 		activateInitialView();
 
+		// Read the initial hash
+		location.readURL();
+
 		// Notify listeners that the presentation is ready but use a 1ms
 		// timeout to ensure it's not fired synchronously after #initialize()
 		setTimeout( () => {
@@ -1160,6 +1161,19 @@ export default function( revealElement, options ) {
 
 	}
 
+	/**
+	 * Checks if the current or specified slide is a stack containing
+	 * vertical slides.
+	 *
+	 * @param {HTMLElement} [slide=currentSlide]
+	 * @return {Boolean}
+	 */
+	function isVerticalStack( slide = currentSlide ) {
+
+		return slide.classList.contains( '.stack' ) || slide.querySelector( 'section' ) !== null;
+
+	}
+
 	/**
 	 * Returns true if we're on the last slide in the current
 	 * vertical stack.
@@ -1348,7 +1362,7 @@ export default function( revealElement, options ) {
 		// If we're in reader mode we scroll the target slide into view
 		// instead of running our standard slide transition
 		if( reader.isActive() ) {
-			const scrollToSlide = dom.wrapper.querySelectorAll( SLIDES_SELECTOR )[ h ];
+			const scrollToSlide = reader.getSlideByIndices( h, v );
 			if( scrollToSlide ) reader.scrollToSlide( scrollToSlide );
 			return;
 		}
@@ -1541,12 +1555,12 @@ export default function( revealElement, options ) {
 	 * @param {number} pageIndex
 	 * @param {HTMLElement} pageElement
 	 */
-	function setCurrentReaderPage( pageIndex, pageElement ) {
+	function setCurrentReaderPage( pageElement, h, v ) {
 
 		let indexhBefore = indexh || 0;
 
-		indexh = pageIndex;
+		indexh = h;
-		indexv = 0;
+		indexv = v;
 
 		previousSlide = currentSlide;
 		currentSlide = pageElement.querySelector( 'section' );
@@ -2098,6 +2112,14 @@ export default function( revealElement, options ) {
 
 		// If a slide is specified, return the indices of that slide
 		if( slide ) {
+			if( reader.isActive() ) {
+				h = parseInt( slide.getAttribute( 'data-index-h' ), 10 );
+
+				if( slide.getAttribute( 'data-index-v' ) ) {
+					v = parseInt( slide.getAttribute( 'data-index-v' ), 10 );
+				}
+			}
+			else {
 				let isVertical = isVerticalSlide( slide );
 				let slideh = isVertical ? slide.parentNode : slide;
 
@@ -2115,6 +2137,7 @@ export default function( revealElement, options ) {
 					v = Math.max( Util.queryAll( slide.parentNode, 'section' ).indexOf( slide ), 0 );
 				}
 			}
+		}
 
 		if( !slide && currentSlide ) {
 			let hasFragments = currentSlide.querySelectorAll( '.fragment' ).length > 0;
@@ -2802,6 +2825,7 @@ export default function( revealElement, options ) {
 		isLastSlide,
 		isLastVerticalSlide,
 		isVerticalSlide,
+		isVerticalStack,
 
 		// State checks
 		isPaused,