source: [view]
dojo.provide("dojox.sketch.SingleArrowAnnotation");
dojo.require("dojox.sketch.Annotation");
dojo.require("dojox.sketch.Anchor");
(function(){
var ta=dojox.sketch;
ta.SingleArrowAnnotation=function(figure, id){
ta.Annotation.call(this, figure, id);
this.transform={ dx:0, dy:0 };
this.start={x:0, y:0};
this.control={x:100, y:-50};
this.end={x:200, y:0};
this.textPosition={ x:0, y:0 };
this.textOffset=4;
//this.textAlign="middle";
this.textYOffset=10;
this.rotation=0;
// this.property('label',this.id);
// this.label=this.id;
this.pathShape=null;
this.arrowhead=null;
this.arrowheadGroup=null;
this.labelShape=null;
this.anchors.start=new ta.Anchor(this, "start");
this.anchors.control=new ta.Anchor(this, "control");
this.anchors.end=new ta.Anchor(this, "end");
};
ta.SingleArrowAnnotation.prototype=new ta.Annotation;
var p=ta.SingleArrowAnnotation.prototype;
p.constructor=ta.SingleArrowAnnotation;
p.type=function(){ return 'SingleArrow'; };
p.getType=function(){ return ta.SingleArrowAnnotation; };
// helper functions
p._rot=function(){
// arrowhead rotation
var opp=this.control.y-this.start.y;
var adj=this.control.x-this.start.x;
//if(!adj){ adj=1; }
this.rotation=Math.atan2(opp,adj);
};
p._pos=function(){
// text position
var offset=this.textOffset, x=0, y=0;
var slope=this.calculate.slope(this.control, this.end);
this.textAlign="middle";
if(Math.abs(slope)>=1){
x=this.end.x+this.calculate.dx(this.control, this.end, offset);
if(this.control.y>this.end.y){ y=this.end.y-offset; }
else{ y=this.end.y+offset+this.textYOffset; }
} else if(slope==0){
x=this.end.x+offset;
y=this.end.y+this.textYOffset;
} else {
if(this.start.x>this.end.x){
x=this.end.x-offset;
this.textAlign="end";
} else {
x=this.end.x+offset;
this.textAlign="start";
}
if(this.start.y y=this.end.y+this.calculate.dy(this.control, this.end, offset)+this.textYOffset;
} else {
y=this.end.y+this.calculate.dy(this.control, this.end, -offset);
}
}
this.textPosition={ x:x, y:y };
};
p.apply=function(obj){
if(!obj){ return; }
if(obj.documentElement){ obj=obj.documentElement; }
this.readCommonAttrs(obj);
for(var i=0; i var c=obj.childNodes[i];
if(c.localName=="text"){
this.property('label',c.childNodes.length?c.childNodes[0].nodeValue:'');
}
else if(c.localName=="path"){
// the line
var d=c.getAttribute('d').split(" ");
var s=d[0].split(",");
this.start.x=parseFloat(s[0].substr(1),10);
this.start.y=parseFloat(s[1],10);
s=d[1].split(",");
this.control.x=parseFloat(s[0].substr(1),10);
this.control.y=parseFloat(s[1],10);
s=d[2].split(",");
this.end.x=parseFloat(s[0],10);
this.end.y=parseFloat(s[1],10);
var stroke=this.property('stroke');
var style=c.getAttribute('style');
var m=style.match(/stroke:([^;]+);/);
if(m){
stroke.color=m[1];
this.property('fill',m[1]);
}
m=style.match(/stroke-width:([^;]+);/);
if(m){
stroke.width=m[1];
}
this.property('stroke',stroke);
}
}
};
p.initialize=function(obj){
// create, based on passed DOM node if available.
var font=(ta.Annotation.labelFont)?ta.Annotation.labelFont:{family:"Times", size:"16px"};
this.apply(obj);
// calculate the other positions
this._rot();
this._pos();
// rotation matrix
var rot=this.rotation;
var tRot=dojox.gfx.matrix.rotate(rot);
// draw the shapes
this.shape=this.figure.group.createGroup();
this.shape.getEventSource().setAttribute("id", this.id);
//if(this.transform.dx||this.transform.dy){ this.shape.setTransform(this.transform); }
this.pathShape=this.shape.createPath("M"+this.start.x+","+this.start.y+" Q"+this.control.x+","+this.control.y+" "+this.end.x+","+this.end.y+" l0,0")
//.setStroke(this.property('stroke'));
this.arrowheadGroup=this.shape.createGroup();//.setTransform({ dx:this.start.x, dy:this.start.y }).applyTransform(tRot);
this.arrowhead=this.arrowheadGroup.createPath();//"M0,0 l50,-10 -6,10 6,10 Z").setFill(this.property('fill'));
this.labelShape=this.shape.createText({
x:this.textPosition.x,
y:this.textPosition.y,
text:this.property('label'),
align:this.textAlign
})
//.setFont(font)
//.setFill(this.property('fill'));
this.labelShape.getEventSource().setAttribute('id',this.id+"-labelShape");
this.draw();