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//>>built
// wrapped by build app
define("dojox/drawing/annotations/Arrow", ["dijit","dojo","dojox","dojo/require!dojox/drawing/stencil/Path"], function(dijit,dojo,dojox){
dojo.provide("dojox.drawing.annotations.Arrow");
dojo.require("dojox.drawing.stencil.Path");
dojox.drawing.annotations.Arrow = dojox.drawing.util.oo.declare(
// summary:
// An annotation called internally to put an arrowhead
// on ether end of a Line. Initiated in Arrow (and Vector)
// with the optional params: arrowStart and arrowEnd. Both
// default true for Axes.
//
dojox.drawing.stencil.Path,
function(/* dojox.__stencilArgs */options){
// arguments: See stencil._Base
this.stencil.connectMult([
[this.stencil, "select", this, "select"],
[this.stencil, "deselect", this, "deselect"],
[this.stencil, "render", this, "render"],
[this.stencil, "onDelete", this, "destroy"]
]);
this.connect("onBeforeRender", this, function(){
var o = this.stencil.points[this.idx1];
var c = this.stencil.points[this.idx2];
if(this.stencil.getRadius() >= this.minimumSize){
this.points = this.arrowHead(c.x, c.y, o.x, o.y, this.style);
}else{
this.points = [];
}
});
},
{
idx1:0,
idx2:1,
subShape:true,
minimumSize:30,
//annotation:true, NOT!
arrowHead: function(x1, y1, x2, y2, style){
// summary:
// Creates data used to draw arrow head.
//
var obj = {
start:{
x:x1,
y:y1
},
x:x2,
y:y2
}
var angle = this.util.angle(obj);
var lineLength = this.util.length(obj);
var al = style.arrows.length;
var aw = style.arrows.width/2;
if(lineLength<al){
al = lineLength/2;
}
var p1 = this.util.pointOnCircle(x2, y2, -al, angle-aw);
var p2 = this.util.pointOnCircle(x2, y2, -al, angle+aw);
return [
{x:x2, y:y2},
p1,
p2
];
}
}
);
});
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