root / trunk / web / dojo / dojox / drawing / annotations / Arrow.js
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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.drawing.annotations.Arrow"]){ |
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9 | dojo._hasResource["dojox.drawing.annotations.Arrow"]=true; |
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10 | dojo.provide("dojox.drawing.annotations.Arrow");
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11 | dojo.require("dojox.drawing.stencil.Path");
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12 | dojox.drawing.annotations.Arrow=dojox.drawing.util.oo.declare(dojox.drawing.stencil.Path,function(_1){
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13 | this.stencil.connectMult([[this.stencil,"select",this,"select"],[this.stencil,"deselect",this,"deselect"],[this.stencil,"render",this,"render"],[this.stencil,"onDelete",this,"destroy"]]); |
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14 | this.connect("onBeforeRender",this,function(){ |
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15 | var o=this.stencil.points[this.idx1]; |
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16 | var c=this.stencil.points[this.idx2]; |
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17 | if(this.stencil.getRadius()>=this.minimumSize){ |
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18 | this.points=this.arrowHead(c.x,c.y,o.x,o.y,this.style); |
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19 | }else{
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20 | this.points=[];
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21 | } |
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22 | }); |
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23 | },{idx1:0,idx2:1,subShape:true,minimumSize:30,arrowHead:function(x1,y1,x2,y2,_2){ |
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24 | var _3={start:{x:x1,y:y1},x:x2,y:y2}; |
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25 | var _4=this.util.angle(_3); |
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26 | var _5=this.util.length(_3); |
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27 | var al=_2.arrows.length;
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28 | var aw=_2.arrows.width/2; |
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29 | if(_5<al){
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30 | al=_5/2;
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31 | } |
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32 | var p1=this.util.pointOnCircle(x2,y2,-al,_4-aw); |
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33 | var p2=this.util.pointOnCircle(x2,y2,-al,_4+aw); |
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34 | return [{x:x2,y:y2},p1,p2]; |
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35 | }}); |
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36 | } |