improved reader progress bar visuals in high density

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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e.dirty=i},u=function(e){e.availableWidth=e.element.parentNode.clientWidth,e.currentWidth=e.element.scrollWidth,e.previousFontSize=e.currentFontSize,e.currentFontSize=Math.min(Math.max(e.minSize,e.availableWidth/e.currentWidth*e.previousFontSize),e.maxSize),e.whiteSpace=e.multiLine&&e.currentFontSize===e.minSize?"normal":"nowrap"},g=function(e){return e.dirty!==a||e.dirty===a&&e.element.parentNode.clientWidth!==e.availableWidth},p=function(t){var i=e.getComputedStyle(t.element,null);t.currentFontSize=parseFloat(i.getPropertyValue("font-size")),t.display=i.getPropertyValue("display"),t.whiteSpace=i.getPropertyValue("white-space")},v=function(e){var t=!1;return!e.preStyleTestCompleted&&(/inline-/.test(e.display)||(t=!0,e.display="inline-block"),"nowrap"!==e.whiteSpace&&(t=!0,e.whiteSpace="nowrap"),e.preStyleTestCompleted=!0,t)},f=function(e){e.element.style.whiteSpace=e.whiteSpace,e.element.style.display=e.display,e.element.style.fontSize=e.currentFontSize+"px"},y=function(e){e.element.dispatchEvent(new CustomEvent("fit",{detail:{oldValue:e.previousFontSize,newValue:e.currentFontSize,scaleFactor:e.currentFontSize/e.previousFontSize}}))},b=function(e,t){return function(){e.dirty=t,e.active&&l()}},w=function(e){return function(){r=r.filter((function(t){return t.element!==e.element})),e.observeMutations&&e.observer.disconnect(),e.element.style.whiteSpace=e.originalStyle.whiteSpace,e.element.style.display=e.originalStyle.display,e.element.style.fontSize=e.originalStyle.fontSize}},E=function(e){return function(){e.active||(e.active=!0,l())}},S=function(e){return function(){return e.active=!1}},R=function(e){e.observeMutations&&(e.observer=new MutationObserver(b(e,s)),e.observer.observe(e.element,e.observeMutations))},A={minSize:16,maxSize:512,multiLine:!0,observeMutations:"MutationObserver"in e&&{subtree:!0,childList:!0,characterData:!0}},k=null,L=function(){e.clearTimeout(k),k=e.setTimeout(d(a),P.observeWindowDelay)},C=["resize","orientationchange"];return Object.defineProperty(P,"observeWindow",{set:function(t){var i=(t?"add":"remove")+"EventListener";C.forEach((function(t){e[i](t,L)}))}}),P.observeWindow=!0,P.observeWindowDelay=100,P.fitAll=d(n),P}function x(e,t){var i=m({},A,t),s=e.map((function(e){var t=m({},i,{element:e,active:!0});return function(e)Line truncated
+!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 p=/android/gi.test(u);var v={};Object.defineProperty(v,"__esModule",{value:!0});var m=Object.assign||function(e){for(var t=1;t<arguments.length;t++){var i=arguments[t];for(var s in i)Object.prototype.hasOwnProperty.call(i,s)&&(e[s]=i[s])}return e},f=v.default=function(e){if(e){var t=function(e){return[].slice.call(e)},i=0,s=1,a=2,n=3,r=[],o=null,l="requestAnimationFrame"in e?function(){e.cancelAnimationFrame(o),o=e.requestAnimationFrame((function(){return c(r.filter((function(e){return e.dirty&&e.active})))}))}:function(){},d=function(e){return function(){r.forEach((function(t){return t.dirty=e})),l()}},c=function(e){e.filter((function(e){return!e.styleComputed})).forEach((function(e){e.styleComputed=p(e)})),e.filter(v).forEach(f);var t=e.filter(g);t.forEach(u),t.forEach((function(e){f(e),h(e)})),t.forEach(y)},h=function(e){return 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t=!1;return!e.preStyleTestCompleted&&(/inline-/.test(e.display)||(t=!0,e.display="inline-block"),"nowrap"!==e.whiteSpace&&(t=!0,e.whiteSpace="nowrap"),e.preStyleTestCompleted=!0,t)},f=function(e){e.element.style.whiteSpace=e.whiteSpace,e.element.style.display=e.display,e.element.style.fontSize=e.currentFontSize+"px"},y=function(e){e.element.dispatchEvent(new CustomEvent("fit",{detail:{oldValue:e.previousFontSize,newValue:e.currentFontSize,scaleFactor:e.currentFontSize/e.previousFontSize}}))},b=function(e,t){return function(){e.dirty=t,e.active&&l()}},w=function(e){return function(){r=r.filter((function(t){return t.element!==e.element})),e.observeMutations&&e.observer.disconnect(),e.element.style.whiteSpace=e.originalStyle.whiteSpace,e.element.style.display=e.originalStyle.display,e.element.style.fontSize=e.originalStyle.fontSize}},E=function(e){return function(){e.active||(e.active=!0,l())}},S=function(e){return function(){return e.active=!1}},R=function(e){e.observeMutations&&(e.observer=new MutationObserver(b(e,s)),e.observer.observe(e.element,e.observeMutations))},A={minSize:16,maxSize:512,multiLine:!0,observeMutations:"MutationObserver"in e&&{subtree:!0,childList:!0,characterData:!0}},k=null,L=function(){e.clearTimeout(k),k=e.setTimeout(d(a),P.observeWindowDelay)},C=["resize","orientationchange"];return Object.defineProperty(P,"observeWindow",{set:function(t){var i=(t?"add":"remove")+"EventListener";C.forEach((function(t){e[i](t,L)}))}}),P.observeWindow=!0,P.observeWindowDelay=100,P.fitAll=d(n),P}function x(e,t){var i=m({},A,t),s=e.map((function(e){var t=m({},i,{element:e,active:!0});return function(e)Line truncated
 //# 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

js/controllers/reader.js

@@ -2,9 +2,9 @@ import { HORIZONTAL_SLIDES_SELECTOR } from '../utils/constants.js'
 import { queryAll } from '../utils/util.js'
 
 const HIDE_SCROLLBAR_TIMEOUT = 500;
-const PROGRESS_SPACING = 4;
+const MAX_PROGRESS_SPACING = 4;
 const MIN_PROGRESS_SEGMENT_HEIGHT = 6;
-const MIN_PLAYHEAD_HEIGHT = 18;
+const MIN_PLAYHEAD_HEIGHT = 8;
 
 /**
  * The reader mode lets you read a reveal.js presentation
@@ -67,6 +67,7 @@ export default class Reader {
 			if( previousSlide && this.Reveal.shouldAutoAnimateBetween( previousSlide, slide ) ) {
 				contentContainer = document.createElement( 'div' );
 				contentContainer.className = 'reader-page-content reader-auto-animate-page';
+				contentContainer.style.display = 'none';
 				previousSlide.closest( '.reader-page-content' ).parentNode.appendChild( contentContainer );
 			}
 			else {
@@ -533,16 +534,18 @@ export default class Reader {
 
 		this.progressBarInner.querySelectorAll( '.reader-progress-slide' ).forEach( slide => slide.remove() );
 
-		const viewportHeight = this.viewportElement.offsetHeight;
 		const scrollHeight = this.viewportElement.scrollHeight;
+		const viewportHeight = this.viewportElement.offsetHeight;
+		const viewportHeightFactor = viewportHeight / scrollHeight;
 
 		this.progressBarHeight = this.progressBarInner.offsetHeight;
-		this.playheadHeight = Math.max( 1 / this.totalScrollTriggerCount * this.progressBarHeight, MIN_PLAYHEAD_HEIGHT );
+		this.playheadHeight = Math.max( viewportHeightFactor * this.progressBarHeight, MIN_PLAYHEAD_HEIGHT );
 		this.progressBarScrollableHeight = this.progressBarHeight - this.playheadHeight;
 
-		this.progressBarPlayhead.style.height = this.playheadHeight - PROGRESS_SPACING + 'px';
-
 		const progressSegmentHeight = viewportHeight / scrollHeight * this.progressBarHeight;
+		const spacing = Math.min( progressSegmentHeight / 8, MAX_PROGRESS_SPACING );
+
+		this.progressBarPlayhead.style.height = this.playheadHeight - spacing + 'px';
 
 		// Don't show individual segments if they're too small
 		if( progressSegmentHeight > MIN_PROGRESS_SEGMENT_HEIGHT ) {
@@ -555,7 +558,7 @@ export default class Reader {
 				page.progressBarSlide = document.createElement( 'div' );
 				page.progressBarSlide.className = 'reader-progress-slide';
 				page.progressBarSlide.style.top = trigger.range[0] * this.progressBarHeight + 'px';
-				page.progressBarSlide.style.height = ( trigger.range[1] - trigger.range[0] ) * this.progressBarHeight - PROGRESS_SPACING + 'px';
+				page.progressBarSlide.style.height = ( trigger.range[1] - trigger.range[0] ) * this.progressBarHeight - spacing + 'px';
 				page.progressBarSlide.classList.toggle( 'has-triggers', page.scrollTriggers.length > 0 );
 				this.progressBarInner.appendChild( page.progressBarSlide );
 
@@ -567,7 +570,7 @@ export default class Reader {
 					const triggerElement = document.createElement( 'div' );
 					triggerElement.className = 'reader-progress-trigger';
 					triggerElement.style.top = trigger.range[0] * scrollBarSlideHeight + 'px';
-					triggerElement.style.height = ( trigger.range[1] - trigger.range[0] ) * scrollBarSlideHeight - PROGRESS_SPACING + 'px';
+					triggerElement.style.height = ( trigger.range[1] - trigger.range[0] ) * scrollBarSlideHeight - spacing + 'px';
 					page.progressBarSlide.appendChild( triggerElement );
 
 					if( i === 0 ) triggerElement.style.display = 'none';