Update to reveal.js 4.6.1
Change-Id: I566737c50b93dd8c094ad3c3fa59865260b3b4ba
diff --git a/inst/reveal.js-4.6.1/js/controllers/progress.js b/inst/reveal.js-4.6.1/js/controllers/progress.js
new file mode 100644
index 0000000..87e2aaf
--- /dev/null
+++ b/inst/reveal.js-4.6.1/js/controllers/progress.js
@@ -0,0 +1,110 @@
+/**
+ * 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 ) {
+
+ let scale = this.Reveal.getProgress();
+
+ // Don't fill the progress bar if there's only one slide
+ if( this.Reveal.getTotalSlides() < 2 ) {
+ scale = 0;
+ }
+
+ this.bar.style.transform = 'scaleX('+ scale +')';
+
+ }
+
+ }
+
+ 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 slides = this.Reveal.getSlides();
+ let slidesTotal = slides.length;
+ let slideIndex = Math.floor( ( event.clientX / this.getMaxWidth() ) * slidesTotal );
+
+ if( this.Reveal.getConfig().rtl ) {
+ slideIndex = slidesTotal - slideIndex;
+ }
+
+ let targetIndices = this.Reveal.getIndices(slides[slideIndex]);
+ this.Reveal.slide( targetIndices.h, targetIndices.v );
+
+ }
+
+ destroy() {
+
+ this.element.remove();
+
+ }
+
+}
\ No newline at end of file