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root / trunk / web / dojo / dojox / image / MagnifierLite.js @ 12

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/*
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        Copyright (c) 2004-2010, The Dojo Foundation All Rights Reserved.
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        Available via Academic Free License >= 2.1 OR the modified BSD license.
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        see: http://dojotoolkit.org/license for details
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*/
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if(!dojo._hasResource["dojox.image.MagnifierLite"]){
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dojo._hasResource["dojox.image.MagnifierLite"]=true;
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dojo.provide("dojox.image.MagnifierLite");
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dojo.experimental("dojox.image.MagnifierLite");
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dojo.require("dijit._Widget");
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dojo.declare("dojox.image.MagnifierLite",dijit._Widget,{glassSize:125,scale:6,postCreate:function(){
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this.inherited(arguments);
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this._adjustScale();
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this._createGlass();
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this.connect(this.domNode,"onmouseenter","_showGlass");
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this.connect(this.glassNode,"onmousemove","_placeGlass");
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this.connect(this.img,"onmouseout","_hideGlass");
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this.connect(window,"onresize","_adjustScale");
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},_createGlass:function(){
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var _1=this.glassNode=dojo.create("div",{style:{height:this.glassSize+"px",width:this.glassSize+"px"},className:"glassNode"},dojo.body());
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this.surfaceNode=_1.appendChild(dojo.create("div"));
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this.img=dojo.place(dojo.clone(this.domNode),_1);
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dojo.style(this.img,{position:"relative",top:0,left:0,width:this._zoomSize.w+"px",height:this._zoomSize.h+"px"});
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},_adjustScale:function(){
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this.offset=dojo.coords(this.domNode,true);
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this._imageSize={w:this.offset.w,h:this.offset.h};
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this._zoomSize={w:this._imageSize.w*this.scale,h:this._imageSize.h*this.scale};
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},_showGlass:function(e){
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this._placeGlass(e);
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dojo.style(this.glassNode,{visibility:"visible",display:""});
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},_hideGlass:function(e){
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dojo.style(this.glassNode,{visibility:"hidden",display:"none"});
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},_placeGlass:function(e){
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this._setImage(e);
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var _2=Math.floor(this.glassSize/2);
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dojo.style(this.glassNode,{top:Math.floor(e.pageY-_2)+"px",left:Math.floor(e.pageX-_2)+"px"});
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},_setImage:function(e){
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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);
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dojo.style(this.img,{top:y+"px",left:x+"px"});
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},destroy:function(_5){
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dojo.destroy(this.glassNode);
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this.inherited(arguments);
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}});
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}