root / trunk / web / dojo / dojox / image / MagnifierLite.js @ 12
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1 | 9 | andrej.cim | /*
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2 | Copyright (c) 2004-2010, The Dojo Foundation All Rights Reserved.
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3 | Available via Academic Free License >= 2.1 OR the modified BSD license.
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4 | see: http://dojotoolkit.org/license for details
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5 | */
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6 | |||
7 | |||
8 | if(!dojo._hasResource["dojox.image.MagnifierLite"]){ |
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9 | dojo._hasResource["dojox.image.MagnifierLite"]=true; |
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10 | dojo.provide("dojox.image.MagnifierLite");
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11 | dojo.experimental("dojox.image.MagnifierLite");
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12 | dojo.require("dijit._Widget");
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13 | dojo.declare("dojox.image.MagnifierLite",dijit._Widget,{glassSize:125,scale:6,postCreate:function(){ |
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14 | this.inherited(arguments); |
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15 | this._adjustScale();
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16 | this._createGlass();
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17 | this.connect(this.domNode,"onmouseenter","_showGlass"); |
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18 | this.connect(this.glassNode,"onmousemove","_placeGlass"); |
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19 | this.connect(this.img,"onmouseout","_hideGlass"); |
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20 | this.connect(window,"onresize","_adjustScale"); |
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21 | },_createGlass:function(){ |
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22 | var _1=this.glassNode=dojo.create("div",{style:{height:this.glassSize+"px",width:this.glassSize+"px"},className:"glassNode"},dojo.body()); |
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23 | this.surfaceNode=_1.appendChild(dojo.create("div")); |
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24 | this.img=dojo.place(dojo.clone(this.domNode),_1); |
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25 | dojo.style(this.img,{position:"relative",top:0,left:0,width:this._zoomSize.w+"px",height:this._zoomSize.h+"px"}); |
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26 | },_adjustScale:function(){ |
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27 | this.offset=dojo.coords(this.domNode,true); |
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28 | this._imageSize={w:this.offset.w,h:this.offset.h}; |
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29 | this._zoomSize={w:this._imageSize.w*this.scale,h:this._imageSize.h*this.scale}; |
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30 | },_showGlass:function(e){ |
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31 | this._placeGlass(e);
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32 | dojo.style(this.glassNode,{visibility:"visible",display:""}); |
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33 | },_hideGlass:function(e){ |
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34 | dojo.style(this.glassNode,{visibility:"hidden",display:"none"}); |
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35 | },_placeGlass:function(e){ |
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36 | this._setImage(e);
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37 | var _2=Math.floor(this.glassSize/2); |
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38 | dojo.style(this.glassNode,{top:Math.floor(e.pageY-_2)+"px",left:Math.floor(e.pageX-_2)+"px"}); |
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39 | },_setImage:function(e){ |
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40 | 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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41 | dojo.style(this.img,{top:y+"px",left:x+"px"}); |
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42 | },destroy:function(_5){ |
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43 | dojo.destroy(this.glassNode);
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44 | this.inherited(arguments); |
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45 | }}); |
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46 | } |