- Author:
- David Nickerson <nickerso@users.sourceforge.net>
- Date:
- 2009-07-16 02:00:03+12:00
- Desc:
- the starting point for the HH tutorial example
- Permanent Source URI:
- https://models.fieldml.org/workspace/a1/rawfile/f6a8f90307388eb4b040ee3566b84d88b59247f7/dojo-presentation/js/dojo/dojox/sketch/LeadAnnotation.js
dojo.provide("dojox.sketch.LeadAnnotation");
dojo.require("dojox.sketch.Annotation");
dojo.require("dojox.sketch.Anchor");
(function(){
var ta=dojox.sketch;
ta.LeadAnnotation=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.property('label',this.id);
this.pathShape=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.LeadAnnotation.prototype=new ta.Annotation;
var p=ta.LeadAnnotation.prototype;
p.constructor=ta.LeadAnnotation;
p.type=function(){ return 'Lead'; }
p.getType=function(){ return ta.LeadAnnotation; };
p._pos=function(){
var offset=this.textOffset, x=0, y=0;
var slope=this.calculate.slope(this.control, this.end);
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<this.end.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<obj.childNodes.length; 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);
}
}
};
p.initialize=function(obj){
var font=(ta.Annotation.labelFont)?ta.Annotation.labelFont:{family:"Times", size:"16px"};
this.apply(obj);
this._pos();
// create either from scratch or based on the passed node
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.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'));
};
p.destroy=function(){
if(!this.shape){ return; }
this.shape.remove(this.pathShape);
this.shape.remove(this.labelShape);
this.figure.group.remove(this.shape);
this.shape=this.pathShape=this.labelShape=null;
};
p.getBBox=function(){
var x=Math.min(this.start.x, this.control.x, this.end.x);
var y=Math.min(this.start.y, this.control.y, this.end.y);
var w=Math.max(this.start.x, this.control.x, this.end.x)-x;
var h=Math.max(this.start.y, this.control.y, this.end.y)-y;
return { x:x, y:y, width:w, height:h };
};
p.draw=function(obj){
this.apply(obj);
this._pos();
this.shape.setTransform(this.transform);
this.pathShape.setShape("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.labelShape.setShape({
x:this.textPosition.x,
y:this.textPosition.y,
text:this.property('label')
})
.setFill(this.property('fill'));
};
p.serialize=function(){
var stroke=this.property('stroke');
return '<g '+this.writeCommonAttrs()+'>'
+ '<path style="stroke:'+stroke.color+';stroke-width:'+stroke.width+';fill:none;" d="'
+ "M"+this.start.x+","+this.start.y+" "
+ "Q"+this.control.x+","+this.control.y+" "
+ this.end.x+","+this.end.y
+ '" />'
+ '<text style="fill:'+stroke.color+';text-anchor:'+this.textAlign+'" font-weight="bold" '
+ 'x="' + this.textPosition.x + '" '
+ 'y="' + this.textPosition.y + '">'
+ this.property('label')
+ '</text>'
+ '</g>';
};
ta.Annotation.register("Lead");
})();
