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@@ -1,29 +1,34 @@
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(function(){
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- document.querySelector( '.reveal' ).addEventListener( 'click', function( event ) {
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- if( event.altKey ) {
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+ var isEnabled = true;
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+
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+ document.querySelector( '.reveal' ).addEventListener( 'mousedown', function( event ) {
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+ if( event.altKey && isEnabled ) {
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event.preventDefault();
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zoom.to({ element: event.target, pan: false });
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}
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} );
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+
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+ Reveal.addEventListener( 'overviewshown', function() { isEnabled = false; } );
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+ Reveal.addEventListener( 'overviewhidden', function() { isEnabled = true; } );
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})();
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* zoom.js 0.2 (modified version for use with reveal.js)
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* http:
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* MIT licensed
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- *
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+ *
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* Copyright (C) 2011-2012 Hakim El Hattab, http:
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*/
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var zoom = (function(){
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var level = 1;
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-
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+
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var mouseX = 0,
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mouseY = 0;
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-
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+
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var panEngageTimeout = -1,
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panUpdateInterval = -1;
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@@ -36,7 +41,7 @@ var zoom = (function(){
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'msTransform' in document.body.style ||
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'OTransform' in document.body.style ||
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'transform' in document.body.style;
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-
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+
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if( supportsTransforms ) {
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document.body.style.transition = 'transform 0.8s ease';
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@@ -45,7 +50,7 @@ var zoom = (function(){
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document.body.style.MozTransition = '-moz-transform 0.8s ease';
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document.body.style.WebkitTransition = '-webkit-transform 0.8s ease';
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}
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-
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+
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document.addEventListener( 'keyup', function( event ) {
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if( level !== 1 && event.keyCode === 27 ) {
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@@ -62,21 +67,21 @@ var zoom = (function(){
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}, false );
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- * Applies the CSS required to zoom in, prioritizes use of CSS3
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+ * Applies the CSS required to zoom in, prioritizes use of CSS3
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* transforms but falls back on zoom for IE.
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- *
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- * @param {Number} pageOffsetX
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- * @param {Number} pageOffsetY
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- * @param {Number} elementOffsetX
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- * @param {Number} elementOffsetY
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- * @param {Number} scale
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+ *
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+ * @param {Number} pageOffsetX
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+ * @param {Number} pageOffsetY
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+ * @param {Number} elementOffsetX
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+ * @param {Number} elementOffsetY
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+ * @param {Number} scale
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*/
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function magnify( pageOffsetX, pageOffsetY, elementOffsetX, elementOffsetY, scale ) {
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if( supportsTransforms ) {
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var origin = pageOffsetX +'px '+ pageOffsetY +'px',
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transform = 'translate('+ -elementOffsetX +'px,'+ -elementOffsetY +'px) scale('+ scale +')';
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-
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+
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document.body.style.transformOrigin = origin;
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document.body.style.OTransformOrigin = origin;
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document.body.style.msTransformOrigin = origin;
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@@ -121,7 +126,7 @@ var zoom = (function(){
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}
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- * Pan the document when the mosue cursor approaches the edges
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+ * Pan the document when the mosue cursor approaches the edges
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* of the window.
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*/
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function pan() {
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@@ -129,7 +134,7 @@ var zoom = (function(){
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rangeX = window.innerWidth * range,
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rangeY = window.innerHeight * range,
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scrollOffset = getScrollOffset();
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-
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+
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if( mouseY < rangeY ) {
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window.scroll( scrollOffset.x, scrollOffset.y - ( 1 - ( mouseY / rangeY ) ) * ( 14 / level ) );
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@@ -159,7 +164,7 @@ var zoom = (function(){
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return {
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* Zooms in on either a rectangle or HTML element.
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- *
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+ *
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* @param {Object} options
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* - element: HTML element to zoom in on
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* OR
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@@ -232,7 +237,7 @@ var zoom = (function(){
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if( currentOptions && currentOptions.element ) {
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scrollOffset.x -= ( window.innerWidth - ( currentOptions.width * currentOptions.scale ) ) / 2;
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}
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-
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+
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magnify( scrollOffset.x, scrollOffset.y, 0, 0, 1 );
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level = 1;
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@@ -241,11 +246,11 @@ var zoom = (function(){
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magnify: function( options ) { this.to( options ) },
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reset: function() { this.out() },
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-
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+
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zoomLevel: function() {
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return level;
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}
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}
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-
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+
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})();
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