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227 lines
7.0 KiB
JavaScript
227 lines
7.0 KiB
JavaScript
dojo.provide("dojox.sketch.SingleArrowAnnotation");
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dojo.require("dojox.sketch.Annotation");
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dojo.require("dojox.sketch.Anchor");
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(function(){
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var ta=dojox.sketch;
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ta.SingleArrowAnnotation=function(figure, id){
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ta.Annotation.call(this, figure, id);
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this.transform={ dx:0, dy:0 };
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this.start={x:0, y:0};
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this.control={x:100, y:-50};
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this.end={x:200, y:0};
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this.textPosition={ x:0, y:0 };
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this.textOffset=4;
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this.textAlign="middle";
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this.textYOffset=10;
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this.rotation=0;
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// this.property('label',this.id);
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// this.label=this.id;
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this.pathShape=null;
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this.arrowhead=null;
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this.arrowheadGroup=null;
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this.labelShape=null;
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this.anchors.start=new ta.Anchor(this, "start");
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this.anchors.control=new ta.Anchor(this, "control");
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this.anchors.end=new ta.Anchor(this, "end");
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};
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ta.SingleArrowAnnotation.prototype=new ta.Annotation;
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var p=ta.SingleArrowAnnotation.prototype;
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p.constructor=ta.SingleArrowAnnotation;
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p.type=function(){ return 'SingleArrow'; };
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p.getType=function(){ return ta.SingleArrowAnnotation; };
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// helper functions
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p._rot=function(){
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// arrowhead rotation
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var opp=this.control.y-this.start.y;
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var adj=this.control.x-this.start.x;
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//if(!adj){ adj=1; }
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this.rotation=Math.atan2(opp,adj);
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};
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p._pos=function(){
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// text position
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var offset=this.textOffset, x=0, y=0;
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var slope=this.calculate.slope(this.control, this.end);
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if(Math.abs(slope)>=1){
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x=this.end.x+this.calculate.dx(this.control, this.end, offset);
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if(this.control.y>this.end.y){ y=this.end.y-offset; }
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else{ y=this.end.y+offset+this.textYOffset; }
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} else if(slope==0){
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x=this.end.x+offset;
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y=this.end.y+this.textYOffset;
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} else {
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if(this.start.x>this.end.x){
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x=this.end.x-offset;
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this.textAlign="end";
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} else {
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x=this.end.x+offset;
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this.textAlign="start";
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}
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if(this.start.y<this.end.y){
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y=this.end.y+this.calculate.dy(this.control, this.end, offset)+this.textYOffset;
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} else {
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y=this.end.y+this.calculate.dy(this.control, this.end, -offset);
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}
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}
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this.textPosition={ x:x, y:y };
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};
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p.apply=function(obj){
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if(!obj){ return; }
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if(obj.documentElement){ obj=obj.documentElement; }
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this.readCommonAttrs(obj);
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for(var i=0; i<obj.childNodes.length; i++){
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var c=obj.childNodes[i];
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if(c.localName=="text"){
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this.property('label',c.childNodes.length?c.childNodes[0].nodeValue:'');
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}
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else if(c.localName=="path"){
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// the line
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var d=c.getAttribute('d').split(" ");
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var s=d[0].split(",");
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this.start.x=parseFloat(s[0].substr(1),10);
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this.start.y=parseFloat(s[1],10);
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s=d[1].split(",");
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this.control.x=parseFloat(s[0].substr(1),10);
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this.control.y=parseFloat(s[1],10);
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s=d[2].split(",");
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this.end.x=parseFloat(s[0],10);
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this.end.y=parseFloat(s[1],10);
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var stroke=this.property('stroke');
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var style=c.getAttribute('style');
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var m=style.match(/stroke:([^;]+);/);
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if(m){
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stroke.color=m[1];
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this.property('fill',m[1]);
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}
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m=style.match(/stroke-width:([^;]+);/);
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if(m){
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stroke.width=m[1];
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}
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this.property('stroke',stroke);
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}
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}
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};
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p.initialize=function(obj){
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// create, based on passed DOM node if available.
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var font=(ta.Annotation.labelFont)?ta.Annotation.labelFont:{family:"Times", size:"16px"};
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this.apply(obj);
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// calculate the other positions
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this._rot();
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this._pos();
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// rotation matrix
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var rot=this.rotation;
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var tRot=dojox.gfx.matrix.rotate(rot);
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// draw the shapes
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this.shape=this.figure.group.createGroup();
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this.shape.getEventSource().setAttribute("id", this.id);
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//if(this.transform.dx||this.transform.dy){ this.shape.setTransform(this.transform); }
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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")
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//.setStroke(this.property('stroke'));
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this.arrowheadGroup=this.shape.createGroup();//.setTransform({ dx:this.start.x, dy:this.start.y }).applyTransform(tRot);
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this.arrowhead=this.arrowheadGroup.createPath();//"M0,0 l50,-10 -6,10 6,10 Z").setFill(this.property('fill'));
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this.labelShape=this.shape.createText({
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x:this.textPosition.x,
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y:this.textPosition.y,
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text:this.property('label'),
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align:this.textAlign
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})
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//.setFont(font)
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//.setFill(this.property('fill'));
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this.labelShape.getEventSource().setAttribute('id',this.id+"-labelShape");
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this.draw();
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};
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p.destroy=function(){
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if(!this.shape){ return; }
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this.arrowheadGroup.remove(this.arrowhead);
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this.shape.remove(this.arrowheadGroup);
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this.shape.remove(this.pathShape);
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this.shape.remove(this.labelShape);
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this.figure.group.remove(this.shape);
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this.shape=this.pathShape=this.labelShape=this.arrowheadGroup=this.arrowhead=null;
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};
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p.draw=function(obj){
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this.apply(obj);
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this._rot();
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this._pos();
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// rotation matrix
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var rot=this.rotation;
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var tRot=dojox.gfx.matrix.rotate(rot);
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this.shape.setTransform(this.transform);
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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")
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//.setStroke(this.property('stroke'));
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this.arrowheadGroup.setTransform({dx:this.start.x,dy:this.start.y}).applyTransform(tRot);
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this.arrowhead.setFill(this.property('fill'));
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this.labelShape.setShape({
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x:this.textPosition.x,
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y:this.textPosition.y,
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text:this.property('label'),
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align:this.textAlign
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})
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.setFill(this.property('fill'));
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this.zoom();
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};
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p.zoom=function(pct){
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if(this.arrowhead){
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pct = pct || this.figure.zoomFactor;
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ta.Annotation.prototype.zoom.call(this,pct);
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//pct = dojox.gfx.renderer=='vml'?1:pct;
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if(this._curPct!==pct){
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this._curPct=pct;
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var l=pct>1?20:Math.floor(20/pct), w=pct>1?5:Math.floor(5/pct),h=pct>1?3:Math.floor(3/pct);
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this.arrowhead.setShape("M0,0 l"+l+",-"+w+" -"+h+","+w+" "+h+","+w+" Z");
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}
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}
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};
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p.getBBox=function(){
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var x=Math.min(this.start.x, this.control.x, this.end.x);
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var y=Math.min(this.start.y, this.control.y, this.end.y);
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var w=Math.max(this.start.x, this.control.x, this.end.x)-x;
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var h=Math.max(this.start.y, this.control.y, this.end.y)-y;
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return { x:x, y:y, width:w, height:h };
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};
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p.serialize=function(){
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var s=this.property('stroke');
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var r=this.rotation*(180/Math.PI);
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r=Math.round(r*Math.pow(10,4))/Math.pow(10,4);
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return '<g '+this.writeCommonAttrs()+'>'
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+ '<path style="stroke:'+s.color+';stroke-width:'+s.width+';fill:none;" d="'
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+ "M"+this.start.x+","+this.start.y+" "
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+ "Q"+this.control.x+","+this.control.y+" "
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+ this.end.x+","+this.end.y
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+ '" />'
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+ '<g transform="translate(' + this.start.x + "," + this.start.y + ") "
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+ 'rotate(' + r + ')">'
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+ '<path style="fill:'+s.color+';" d="M0,0 l20,-5, -3,5, 3,5 Z" />'
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+ '</g>'
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+ '<text style="fill:'+s.color+';text-anchor:'+this.textAlign+'" font-weight="bold" '
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+ 'x="' + this.textPosition.x + '" '
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+ 'y="' + this.textPosition.y + '">'
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+ this.property('label')
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+ '</text>'
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+ '</g>';
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};
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ta.Annotation.register("SingleArrow");
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})();
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