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@@ -54,6 +54,7 @@ var Reveal = (function(){
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history: false,
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transition: 'default',
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theme: 'default',
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+ mouseWheel: true,
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rollingLinks: true
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},
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@@ -70,7 +71,10 @@ var Reveal = (function(){
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document.body.style['WebkitTransform'] !== undefined ||
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document.body.style['MozTransform'] !== undefined ||
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document.body.style['msTransform'] !== undefined ||
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- document.body.style['OTransform'] !== undefined;
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+ document.body.style['OTransform'] !== undefined,
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+
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+
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+ mouseWheelTimeout = 0;
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* Starts up the slideshow by applying configuration
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@@ -129,15 +133,15 @@ var Reveal = (function(){
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dom.wrapper.classList.add( config.theme );
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}
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+ if( config.mouseWheel ) {
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+ document.addEventListener('DOMMouseScroll', onDocumentMouseScroll, false);
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+ document.addEventListener('mousewheel', onDocumentMouseScroll, false);
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+ }
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+
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if( config.rollingLinks ) {
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linkify();
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}
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-
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-
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- if(window.addEventListener){
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- document.addEventListener('DOMMouseScroll', scrollStep, false);
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- }
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readURL();
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@@ -251,6 +255,24 @@ var Reveal = (function(){
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slide();
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}
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}
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+
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+
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+ * Handles mouse wheel scrolling, throttled to avoid
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+ * skipping multiple slides.
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+ */
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+ function onDocumentMouseScroll( event ){
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+ clearTimeout( mouseWheelTimeout );
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+
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+ mouseWheelTimeout = setTimeout( function() {
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+ var delta = event.detail || -event.wheelDelta;
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+ if( delta > 0 ) {
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+ availableRoutes().down ? navigateDown() : navigateRight();
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+ }
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+ else {
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+ availableRoutes().up ? navigateUp() : navigateLeft();
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+ }
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+ }, 100 );
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+ }
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* Handler for the window level 'hashchange' event.
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@@ -627,26 +649,6 @@ var Reveal = (function(){
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}
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}
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- var stepT=0;
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- function scrollStep(e){
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- clearTimeout(stepT);
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- stepT=setTimeout(function(){
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- if(e.detail>0){
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- if(availableRoutes().down){
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- navigateDown()
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- }else{
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- navigateRight()
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- }
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- }else{
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- if(availableRoutes().up){
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- navigateUp()
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- }else{
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- navigateLeft()
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- }
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- }
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- },200);
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- }
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-
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return {
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initialize: initialize,
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