<div id="mygraphiccontainer"></div>
<script>
YUI({filter:"raw"}).use('graphics', function (Y) 
{ 
    var RoundedRect = function()
    {
        RoundedRect.superclass.constructor.apply(this, arguments);
    }
    RoundedRect.NAME = "roundedRect";
    Y.extend(RoundedRect, Y.Shape, {
        _draw: function()
        {
            var w = this.get("width"),
                h = this.get("height"),
                ew = this.get("ellipseWidth"),
                eh = this.get("ellipseHeight");
            this.clear();
            this.moveTo(0, eh);
            this.lineTo(0, h - eh);
            this.quadraticCurveTo(0, h, ew, h);
            this.lineTo(w - ew, h);
            this.quadraticCurveTo(w, h, w, h - eh);
            this.lineTo(w, eh);
            this.quadraticCurveTo(w, 0, w - ew, 0);
            this.lineTo(ew, 0);
            this.quadraticCurveTo(0, 0, 0, eh);
            this.end();
        }
    }, {
        ATTRS: Y.mix({
            ellipseWidth: {
                value: 4
            },

            ellipseHeight: {
                value: 4
            }
        }, Y.Shape.ATTRS)
    }); 
    Y.RoundedRect = RoundedRect;
    
    var mygraphic = new Y.Graphic({render: "#mygraphiccontainer"}),
        myroundrect = mygraphic.addShape({
            type: Y.RoundedRect,
            width: 300,
            height: 200,
            x: 50,
            y: 50,
            ellipseWidth: 12,
            ellipseHeight: 12,
            fill: {
                type: "linear",
                stops: [
                    {color: "#9aa9bb", offset: 0},
                    {color: "#eeefff", offset: 0.4},
                    {color: "#00000f", offset: 0.8},
                    {color: "#9aa9bb", offset: 1}
                ],
                rotation: 45
            },
            stroke: {
                weight: 2,
                color: "#000"
            }
        });
    });
</script>
