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