File: graphics/js/CanvasEllipse.js

            /**
             * <a href="http://www.w3.org/TR/html5/the-canvas-element.html">Canvas</a> implementation of the <a href="Ellipse.html">`Ellipse`</a> class.
             * `CanvasEllipse` is not intended to be used directly. Instead, use the <a href="Ellipse.html">`Ellipse`</a> class.
             * If the browser lacks <a href="http://www.w3.org/TR/SVG/">SVG</a> capabilities but has
             * <a href="http://www.w3.org/TR/html5/the-canvas-element.html">Canvas</a> capabilities, the <a href="Ellipse.html">`Ellipse`</a>
             * class will point to the `CanvasEllipse` class.
             *
             * @module graphics
             * @class CanvasEllipse
             * @constructor
             */
            CanvasEllipse = function()
            {
            	CanvasEllipse.superclass.constructor.apply(this, arguments);
            };
            
            CanvasEllipse.NAME = "ellipse";
            
            Y.extend(CanvasEllipse, CanvasShape, {
            	/**
            	 * Indicates the type of shape
            	 *
            	 * @property _type
            	 * @type String
                 * @private
            	 */
            	_type: "ellipse",
            
            	/**
                 * Draws the shape.
                 *
                 * @method _draw
            	 * @private
            	 */
            	_draw: function()
            	{
            		var w = this.get("width"),
            			h = this.get("height");
            		this.clear();
                    this.drawEllipse(0, 0, w, h);
            		this._closePath();
            	}
            });
            CanvasEllipse.ATTRS = Y.merge(CanvasShape.ATTRS, {
            	/**
            	 * Horizontal radius for the ellipse.
            	 *
            	 * @config xRadius
            	 * @type Number
            	 */
            	xRadius: {
            		setter: function(val)
            		{
            			this.set("width", val * 2);
            		},
            
            		getter: function()
            		{
            			var val = this.get("width");
            			if(val)
            			{
            				val *= 0.5;
            			}
            			return val;
            		}
            	},
            
            	/**
            	 * Vertical radius for the ellipse.
            	 *
            	 * @config yRadius
            	 * @type Number
            	 * @readOnly
            	 */
            	yRadius: {
            		setter: function(val)
            		{
            			this.set("height", val * 2);
            		},
            
            		getter: function()
            		{
            			var val = this.get("height");
            			if(val)
            			{
            				val *= 0.5;
            			}
            			return val;
            		}
            	}
            });
            Y.CanvasEllipse = CanvasEllipse;