MagnifierLite.js 2.0 KB

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  1. /*
  2. Copyright (c) 2004-2009, The Dojo Foundation All Rights Reserved.
  3. Available via Academic Free License >= 2.1 OR the modified BSD license.
  4. see: http://dojotoolkit.org/license for details
  5. */
  6. if(!dojo._hasResource["dojox.image.MagnifierLite"]){dojo._hasResource["dojox.image.MagnifierLite"]=true;dojo.provide("dojox.image.MagnifierLite");dojo.experimental("dojox.image.MagnifierLite");dojo.require("dijit._Widget");dojo.declare("dojox.image.MagnifierLite",dijit._Widget,{glassSize:125,scale:6,postCreate:function(){this.inherited(arguments);this._adjustScale();this._createGlass();this.connect(this.domNode,"onmouseenter","_showGlass");this.connect(this.glassNode,"onmousemove","_placeGlass");this.connect(this.img,"onmouseout","_hideGlass");this.connect(window,"onresize","_adjustScale");},_createGlass:function(){var _1=this.glassNode=dojo.create("div",{style:{height:this.glassSize+"px",width:this.glassSize+"px"},className:"glassNode"},dojo.body());this.surfaceNode=_1.appendChild(dojo.create("div"));this.img=dojo.place(dojo.clone(this.domNode),_1);dojo.style(this.img,{position:"relative",top:0,left:0,width:this._zoomSize.w+"px",height:this._zoomSize.h+"px"});},_adjustScale:function(){this.offset=dojo.coords(this.domNode,true);this._imageSize={w:this.offset.w,h:this.offset.h};this._zoomSize={w:this._imageSize.w*this.scale,h:this._imageSize.h*this.scale};},_showGlass:function(e){this._placeGlass(e);dojo.style(this.glassNode,{visibility:"visible",display:""});},_hideGlass:function(e){dojo.style(this.glassNode,{visibility:"hidden",display:"none"});},_placeGlass:function(e){this._setImage(e);var _2=Math.floor(this.glassSize/2);dojo.style(this.glassNode,{top:Math.floor(e.pageY-_2)+"px",left:Math.floor(e.pageX-_2)+"px"});},_setImage:function(e){var _3=(e.pageX-this.offset.l)/this.offset.w,_4=(e.pageY-this.offset.t)/this.offset.h,x=(this._zoomSize.w*_3*-1)+(this.glassSize*_3),y=(this._zoomSize.h*_4*-1)+(this.glassSize*_4);dojo.style(this.img,{top:y+"px",left:x+"px"});},destroy:function(_5){dojo.destroy(this.glassNode);this.inherited(arguments);}});}