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/**
* $Id: mxEllipse.js,v 1.20 2012-04-04 07:34:50 gaudenz Exp $
* Copyright (c) 2006-2010, JGraph Ltd
*/
/**
* Class: mxEllipse
*
* Extends <mxShape> to implement an ellipse shape.
* This shape is registered under <mxConstants.SHAPE_ELLIPSE>
* in <mxCellRenderer>.
*
* Constructor: mxEllipse
*
* Constructs a new ellipse shape.
*
* Parameters:
*
* bounds - <mxRectangle> that defines the bounds. This is stored in
* <mxShape.bounds>.
* fill - String that defines the fill color. This is stored in <fill>.
* stroke - String that defines the stroke color. This is stored in <stroke>.
* strokewidth - Optional integer that defines the stroke width. Default is
* 1. This is stored in <strokewidth>.
*/
function mxEllipse(bounds, fill, stroke, strokewidth)
{
this.bounds = bounds;
this.fill = fill;
this.stroke = stroke;
this.strokewidth = (strokewidth != null) ? strokewidth : 1;
};
/**
* Extends mxShape.
*/
mxEllipse.prototype = new mxShape();
mxEllipse.prototype.constructor = mxEllipse;
/**
* Variable: mixedModeHtml
*
* Overrides the parent value with false, meaning it will
* draw in VML in mixed Html mode.
*/
mxEllipse.prototype.mixedModeHtml = false;
/**
* Variable: preferModeHtml
*
* Overrides the parent value with false, meaning it will
* draw as VML in prefer Html mode.
*/
mxEllipse.prototype.preferModeHtml = false;
/**
* Function: createVml
*
* Creates and returns the VML node to represent this shape.
*/
mxEllipse.prototype.createVml = function()
{
// Uses an arc not an oval to make sure the
// textbox fills out the outer bounds of the
// circle, not just the inner rectangle
var node = document.createElement('v:arc');
node.startangle = '0';
node.endangle = '360';
this.configureVmlShape(node);
return node;
};
/**
* Function: createSvg
*
* Creates and returns the SVG node(s) to represent this shape.
*/
mxEllipse.prototype.createSvg = function()
{
return this.createSvgGroup('ellipse');
};
/**
* Function: redrawSvg
*
* Updates the SVG node(s) to reflect the latest bounds and scale.
*/
mxEllipse.prototype.redrawSvg = function()
{
if (this.crisp)
{
this.innerNode.setAttribute('shape-rendering', 'crispEdges');
}
else
{
this.innerNode.removeAttribute('shape-rendering');
}
this.updateSvgNode(this.innerNode);
this.updateSvgNode(this.shadowNode);
};
/**
* Function: updateSvgNode
*
* Updates the given node to reflect the new <bounds> and <scale>.
*/
mxEllipse.prototype.updateSvgNode = function(node)
{
if (node != null)
{
var strokeWidth = Math.round(Math.max(1, this.strokewidth * this.scale));
node.setAttribute('stroke-width', strokeWidth);
node.setAttribute('cx', this.bounds.x + this.bounds.width / 2);
node.setAttribute('cy', this.bounds.y + this.bounds.height / 2);
node.setAttribute('rx', this.bounds.width / 2);
node.setAttribute('ry', this.bounds.height / 2);
// Updates the shadow offset
if (this.shadowNode != null)
{
this.shadowNode.setAttribute('transform', this.getSvgShadowTransform());
}
if (this.isDashed)
{
var phase = Math.max(1, Math.round(3 * this.scale * this.strokewidth));
node.setAttribute('stroke-dasharray', phase + ' ' + phase);
}
}
};
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