source: Dev/trunk/src/client/dojox/sketch/PreexistingAnnotation.js

define(["dojo/_base/kernel", "dojo/_base/lang", "./Annotation", "./Anchor"], function(dojo){
        dojo.getObject("sketch", true, dojox);

        var ta=dojox.sketch;
        ta.PreexistingAnnotation=function(figure, id){
                ta.Annotation.call(this, figure, id);
                this.transform={dx:0, dy:0};
                this.start={ x:0, y:0 };
                this.end={ x:200, y:200 };
                this.radius=8;
                this.textPosition={ x:196, y:196 };
                this.textOffset=4;
                this.textAlign="end";

                //this.property('label',this.id);
                this.rectShape=null;
                this.labelShape=null;

                this.anchors.start=new ta.Anchor(this, "start");
                this.anchors.end=new ta.Anchor(this, "end");
        };
        ta.PreexistingAnnotation.prototype=new ta.Annotation;
        var p=ta.PreexistingAnnotation.prototype;
        p.constructor=ta.PreexistingAnnotation;

        p.type=function(){ return 'Preexisting' };
        p.getType=function(){ return ta.PreexistingAnnotation; };

        p._pos=function(){
                var x=Math.min(this.start.x, this.end.x);
                var y=Math.min(this.start.y, this.end.y);
                var w=Math.max(this.start.x, this.end.x);
                var h=Math.max(this.start.y, this.end.y);
                this.start={ x:x, y:y };
                this.end={ x:w, y:h };
                this.textPosition={ x:this.end.x-this.textOffset, y:this.end.y-this.textOffset };
        };
        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=="rect"){
                                if(c.getAttribute('x')!==null){ this.start.x=parseFloat(c.getAttribute('x'), 10); }
                                if(c.getAttribute('width')!==null){ this.end.x=parseFloat(c.getAttribute('width'), 10)+parseFloat(c.getAttribute('x'), 10); }
                                if(c.getAttribute('y')!==null){ this.start.y=parseFloat(c.getAttribute('y'), 10); }
                                if(c.getAttribute('height')!==null){ this.end.y=parseFloat(c.getAttribute('height'), 10)+parseFloat(c.getAttribute('y'), 10); }
                                if(c.getAttribute('r')!==null){ this.radius=parseFloat(c.getAttribute('r'),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){
                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.rectShape=this.shape.createRect({
                                x:this.start.x,
                                y: this.start.y,
                                width: this.end.x-this.start.x,
                                height:this.end.y-this.start.y,
                                r:this.radius
                        })
                        //.setStroke({color:this.property('fill'), width:1})
                        .setFill([255,255,255,0.1]);
                this.rectShape.getEventSource().setAttribute("shape-rendering","crispEdges");
                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();
        };
        p.destroy=function(){
                if(!this.shape){ return; }
                this.shape.remove(this.rectShape);
                this.shape.remove(this.labelShape);
                this.figure.group.remove(this.shape);
                this.shape=this.rectShape=this.labelShape=null;
        };
        p.getBBox=function(){
                var x=Math.min(this.start.x, this.end.x);
                var y=Math.min(this.start.y, this.end.y);
                var w=Math.max(this.start.x, this.end.x)-x;
                var h=Math.max(this.start.y, this.end.y)-y;
                return { x:x-2, y:y-2, width:w+4, height:h+4 };
        };
        p.draw=function(obj){
                this.apply(obj);
                this._pos();
                this.shape.setTransform(this.transform);
                this.rectShape.setShape({
                                x:this.start.x,
                                y: this.start.y,
                                width: this.end.x-this.start.x,
                                height:this.end.y-this.start.y,
                                r:this.radius
                        })
                        //.setStroke({ color:this.property('fill'), width:1 })
                        .setFill([255,255,255,0.1]);

                this.labelShape.setShape({
                                x:this.textPosition.x,
                                y:this.textPosition.y,
                                text:this.property('label')
                        })
                        .setFill(this.property('fill'));
                this.zoom();
        };
        p.zoom=function(pct){
                if(this.rectShape){
                        pct = pct || this.figure.zoomFactor;
                        ta.Annotation.prototype.zoom.call(this,pct);
                        pct = dojox.gfx.renderer=='vml'?1:pct;
                        this.rectShape.setStroke({color:this.property('fill'), width:1/pct});
                }
        };
        p.serialize=function(){
                var s=this.property('stroke');
                return '<g '+this.writeCommonAttrs()+'>'
                        + '<rect style="stroke:'+s.color+';stroke-width:1;fill:none;" '
                        + 'x="' + this.start.x + '" '
                        + 'width="' + (this.end.x-this.start.x) + '" '
                        + 'y="' + this.start.y + '" '
                        + 'height="' + (this.end.y-this.start.y) + '" '
                        + 'rx="' + this.radius + '" '
                        + 'ry="' + this.radius + '" '
                        + ' />'
                        + '<text style="fill:'+s.color+';text-anchor:'+this.textAlign+'" font-weight="bold" '
                        + 'x="' + this.textPosition.x + '" '
                        + 'y="' + this.textPosition.y + '">'
                        + this.property('label')
                        + '</text>'
                        + '</g>';
        };

        ta.Annotation.register("Preexisting");
        return dojox.sketch.PreexistingAnnotation;
});