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t=this.previousBackground?this.previousBackground.getAttribute("data-background-hash"):null,i=a.getAttribute("data-background-hash");i&&i===t&&a!==this.previousBackground&&this.element.classList.add("no-transition"),this.previousBackground=a}t&&["has-light-background","has-dark-background"].forEach(e=>{t.classList.contains(e)?this.Reveal.getRevealElement().classList.add(e):this.Reveal.getRevealElement().classList.remove(e)},this),setTimeout(()=>{this.element.classList.remove("no-transition")},1)}updateParallax(){let e=this.Reveal.getIndices();if(this.Reveal.getConfig().parallaxBackgroundImage){let t,i,a=this.Reveal.getHorizontalSlides(),s=this.Reveal.getVerticalSlides(),n=this.element.style.backgroundSize.split(" ");1===n.length?t=i=parseInt(n[0],10):(t=parseInt(n[0],10),i=parseInt(n[1],10));let r,o,l=this.element.offsetWidth,d=a.length;r="number"==typeof 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This includes both + * the built-in control arrows as well as event monitoring + * of any elements within the presentation with either of the + * following helper classes: + * - .navigate-up + * - .navigate-right + * - .navigate-down + * - .navigate-left + * - .navigate-next + * - .navigate-prev */ export default class Controls { diff --git a/js/controllers/fragments.js b/js/controllers/fragments.js index 9ba35ac..136a538 100644 --- a/js/controllers/fragments.js +++ b/js/controllers/fragments.js @@ -332,8 +332,7 @@ export default class Fragments { } this.Reveal.controls.update(); - - this.Reveal.updateProgress(); + this.Reveal.progress.update(); if( this.Reveal.getConfig().fragmentInURL ) { this.Reveal.location.writeURL(); diff --git a/js/controllers/progress.js b/js/controllers/progress.js new file mode 100644 index 0000000..90f7053 --- /dev/null +++ b/js/controllers/progress.js @@ -0,0 +1,96 @@ +/** + * Creates a visual progress bar for the presentation. + */ +export default class Progress { + + constructor( Reveal ) { + + this.Reveal = Reveal; + + this.onProgressClicked = this.onProgressClicked.bind( this ); + + } + + render() { + + this.element = document.createElement( 'div' ); + this.element.className = 'progress'; + this.Reveal.getRevealElement().appendChild( this.element ); + + this.bar = document.createElement( 'span' ); + this.element.appendChild( this.bar ); + + } + + /** + * Called when the reveal.js config is updated. + */ + configure( config, oldConfig ) { + + this.element.style.display = config.progress ? 'block' : 'none'; + + } + + bind() { + + if( this.Reveal.getConfig().progress && this.element ) { + this.element.addEventListener( 'click', this.onProgressClicked, false ); + } + + } + + unbind() { + + if ( this.Reveal.getConfig().progress && this.element ) { + this.element.removeEventListener( 'click', this.onProgressClicked, false ); + } + + } + + /** + * Updates the progress bar to reflect the current slide. + */ + update() { + + // Update progress if enabled + if( this.Reveal.getConfig().progress && this.bar ) { + + this.bar.style.width = this.Reveal.getProgress() * this.getMaxWidth() + 'px'; + + } + + } + + getMaxWidth() { + + return this.Reveal.getRevealElement().offsetWidth; + + } + + /** + * Clicking on the progress bar results in a navigation to the + * closest approximate horizontal slide using this equation: + * + * ( clickX / presentationWidth ) * numberOfSlides + * + * @param {object} event + */ + onProgressClicked( event ) { + + this.Reveal.onUserInput( event ); + + event.preventDefault(); + + let slidesTotal = this.Reveal.getHorizontalSlides().length; + let slideIndex = Math.floor( ( event.clientX / this.getMaxWidth() ) * slidesTotal ); + + if( this.Reveal.getConfig().rtl ) { + slideIndex = slidesTotal - slideIndex; + } + + this.Reveal.slide( slideIndex ); + + } + + +} \ No newline at end of file diff --git a/js/reveal.js b/js/reveal.js index 9509fea..6e9385b 100644 --- a/js/reveal.js +++ b/js/reveal.js @@ -7,6 +7,7 @@ import Overview from './controllers/overview.js' import Keyboard from './controllers/keyboard.js' import Location from './controllers/location.js' import Controls from './controllers/controls.js' +import Progress from './controllers/progress.js' import Plugins from './controllers/plugins.js' import Print from './controllers/print.js' import Touch from './controllers/touch.js' @@ -84,6 +85,7 @@ export default function( revealElement, options ) { keyboard = new Keyboard( Reveal ), location = new Location( Reveal ), controls = new Controls( Reveal ), + progress = new Progress( Reveal ), plugins = new Plugins( Reveal ), print = new Print( Reveal ), touch = new Touch( Reveal ), @@ -227,14 +229,10 @@ export default function( revealElement, options ) { dom.wrapper.classList.remove( 'no-hover' ); } - - // Progress bar - dom.progress = createSingletonNode( dom.wrapper, 'div', 'progress', '' ); - dom.progressbar = dom.progress.querySelector( 'span' ); - backgrounds.render(); slideNumber.render(); controls.render(); + progress.render(); notes.render(); // Overlay graphic which is displayed during the paused mode @@ -404,8 +402,6 @@ export default function( revealElement, options ) { dom.wrapper.setAttribute( 'data-transition-speed', config.transitionSpeed ); dom.wrapper.setAttribute( 'data-background-transition', config.backgroundTransition ); - dom.progress.style.display = config.progress ? 'block' : 'none'; - if( config.shuffle ) { shuffle(); } @@ -489,6 +485,7 @@ export default function( revealElement, options ) { notes.configure( config, oldConfig ); controls.configure( config, oldConfig ); + progress.configure( config, oldConfig ); keyboard.configure( config, oldConfig ); fragments.configure( config, oldConfig ); slideNumber.configure( config, oldConfig ); @@ -510,10 +507,7 @@ export default function( revealElement, options ) { if( config.touch ) touch.bind(); if( config.keyboard ) keyboard.bind(); controls.bind(); - - if( config.progress && dom.progress ) { - dom.progress.addEventListener( 'click', onProgressClicked, false ); - } + progress.bind(); dom.pauseOverlay.addEventListener( 'click', resume, false ); @@ -533,16 +527,13 @@ export default function( revealElement, options ) { touch.unbind(); keyboard.unbind(); controls.unbind(); + progress.unbind(); window.removeEventListener( 'hashchange', onWindowHashChange, false ); window.removeEventListener( 'resize', onWindowResize, false ); dom.pauseOverlay.removeEventListener( 'click', resume, false ); - if ( config.progress && dom.progress ) { - dom.progress.removeEventListener( 'click', onProgressClicked, false ); - } - } /** @@ -911,7 +902,7 @@ export default function( revealElement, options ) { } } - updateProgress(); + progress.update(); backgrounds.updateParallax(); if( overview.isActive() ) { @@ -1349,8 +1340,8 @@ export default function( revealElement, options ) { // Announce the current slide contents to screen readers announceStatus( getStatusText( currentSlide ) ); - updateProgress(); + progress.update(); controls.update(); notes.update(); backgrounds.update(); @@ -1414,8 +1405,8 @@ export default function( revealElement, options ) { fragments.sortAll(); controls.update(); + progress.update(); - updateProgress(); updateSlidesVisibility(); notes.update(); @@ -1709,20 +1700,6 @@ export default function( revealElement, options ) { } - /** - * Updates the progress bar to reflect the current slide. - */ - function updateProgress() { - - // Update progress if enabled - if( config.progress && dom.progressbar ) { - - dom.progressbar.style.width = getProgress() * dom.wrapper.offsetWidth + 'px'; - - } - - } - /** * Determine what available routes there are for navigation. * @@ -2375,31 +2352,6 @@ export default function( revealElement, options ) { } - /** - * Clicking on the progress bar results in a navigation to the - * closest approximate horizontal slide using this equation: - * - * ( clickX / presentationWidth ) * numberOfSlides - * - * @param {object} event - */ - function onProgressClicked( event ) { - - onUserInput( event ); - - event.preventDefault(); - - let slidesTotal = getHorizontalSlides().length; - let slideIndex = Math.floor( ( event.clientX / dom.wrapper.offsetWidth ) * slidesTotal ); - - if( config.rtl ) { - slideIndex = slidesTotal - slideIndex; - } - - slide( slideIndex ); - - } - /** * Handler for the window level 'hashchange' event. * @@ -2668,6 +2620,7 @@ export default function( revealElement, options ) { getStatusText, print, + progress, controls, location, overview, @@ -2677,7 +2630,6 @@ export default function( revealElement, options ) { onUserInput, closeOverlay, - updateProgress, updateSlidesVisibility, layoutSlideContents, transformSlides,