/*!
 * Viewer.js v1.0.0
 * https://github.com/fengyuanchen/viewerjs
 *
 * Copyright (c) 2015-2018 Chen Fengyuan
 * Released under the MIT license
 *
 * Date: 2018-04-01T05:33:18.955Z
 */
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t=this.element,i=this.viewer;dt(i,L,this.onClick),dt(i,O,this.onWheel),dt(i,C,this.onDragStart),dt(this.canvas,Y,this.onPointerDown),dt(t.ownerDocument,X,this.onPointerMove),dt(t.ownerDocument,R,this.onPointerUp),dt(t.ownerDocument,M,this.onKeyDown),dt(window,q,this.onResize)}},yt={click:function(t){var 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