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/**
* $Id: mxDoubleEllipse.js,v 1.19 2012-05-21 18:27:17 gaudenz Exp $
* Copyright (c) 2006-2010, JGraph Ltd
*/
/**
* Class: mxDoubleEllipse
*
* Extends <mxShape> to implement a double ellipse shape.
* This shape is registered under <mxConstants.SHAPE_DOUBLE_ELLIPSE>
* in <mxCellRenderer>.
*
* Constructor: mxDoubleEllipse
*
* 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 mxDoubleEllipse(bounds, fill, stroke, strokewidth)
{
this.bounds = bounds;
this.fill = fill;
this.stroke = stroke;
this.strokewidth = (strokewidth != null) ? strokewidth : 1;
};
/**
* Extends mxShape.
*/
mxDoubleEllipse.prototype = new mxShape();
mxDoubleEllipse.prototype.constructor = mxDoubleEllipse;
/**
* Variable: vmlNodes
*
* Adds local references to <mxShape.vmlNodes>.
*/
mxDoubleEllipse.prototype.vmlNodes = mxDoubleEllipse.prototype.vmlNodes.concat(['background', 'foreground']);
/**
* Variable: mixedModeHtml
*
* Overrides the parent value with false, meaning it will
* draw in VML in mixed Html mode.
*/
mxDoubleEllipse.prototype.mixedModeHtml = false;
/**
* Variable: preferModeHtml
*
* Overrides the parent value with false, meaning it will
* draw as VML in prefer Html mode.
*/
mxDoubleEllipse.prototype.preferModeHtml = false;
/**
* Variable: vmlScale
*
* Renders VML with a scale of 2.
*/
mxDoubleEllipse.prototype.vmlScale = 2;
/**
* Function: createVml
*
* Creates and returns the VML node to represent this shape.
*/
mxDoubleEllipse.prototype.createVml = function()
{
var node = document.createElement('v:group');
// Draws the background
this.background = document.createElement('v:arc');
this.background.startangle = '0';
this.background.endangle = '360';
this.configureVmlShape(this.background);
node.appendChild(this.background);
// Ignores values that only apply to the background
this.label = this.background;
this.isShadow = false;
this.fill = null;
// Draws the foreground
this.foreground = document.createElement('v:oval');
this.configureVmlShape(this.foreground);
node.appendChild(this.foreground);
this.stroke = null;
this.configureVmlShape(node);
return node;
};
/**
* Function: redrawVml
*
* Updates the VML node(s) to reflect the latest bounds and scale.
*/
mxDoubleEllipse.prototype.redrawVml = function()
{
this.updateVmlShape(this.node);
this.updateVmlShape(this.background);
this.updateVmlShape(this.foreground);
var inset = Math.round((this.strokewidth + 3) * this.scale) * this.vmlScale;
var w = Math.round(this.bounds.width * this.vmlScale);
var h = Math.round(this.bounds.height * this.vmlScale);
this.foreground.style.top = inset + 'px'; // relative
this.foreground.style.left = inset + 'px'; // relative
this.foreground.style.width = Math.max(0, w - 2 * inset) + 'px';
this.foreground.style.height = Math.max(0, h - 2 * inset) + 'px';
};
/**
* Function: createSvg
*
* Creates and returns the SVG node(s) to represent this shape.
*/
mxDoubleEllipse.prototype.createSvg = function()
{
var g = this.createSvgGroup('ellipse');
this.foreground = document.createElementNS(mxConstants.NS_SVG, 'ellipse');
if (this.stroke != null)
{
this.foreground.setAttribute('stroke', this.stroke);
}
else
{
this.foreground.setAttribute('stroke', 'none');
}
this.foreground.setAttribute('fill', 'none');
g.appendChild(this.foreground);
return g;
};
/**
* Function: redrawSvg
*
* Updates the SVG node(s) to reflect the latest bounds and scale.
*/
mxDoubleEllipse.prototype.redrawSvg = function()
{
if (this.crisp)
{
this.innerNode.setAttribute('shape-rendering', 'crispEdges');
this.foreground.setAttribute('shape-rendering', 'crispEdges');
}
else
{
this.innerNode.removeAttribute('shape-rendering');
this.foreground.removeAttribute('shape-rendering');
}
this.updateSvgNode(this.innerNode);
this.updateSvgNode(this.shadowNode);
this.updateSvgNode(this.foreground, (this.strokewidth + 3) * this.scale);
if (this.isDashed)
{
var phase = Math.max(1, Math.round(3 * this.scale * this.strokewidth));
this.innerNode.setAttribute('stroke-dasharray', phase + ' ' + phase);
}
};
/**
* Function: updateSvgNode
*
* Updates the given node to reflect the new <bounds> and <scale>.
*/
mxDoubleEllipse.prototype.updateSvgNode = function(node, inset)
{
inset = (inset != null) ? inset : 0;
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', Math.max(0, this.bounds.width / 2 - inset));
node.setAttribute('ry', Math.max(0, this.bounds.height / 2 - inset));
// Updates the transform of the shadow
if (this.shadowNode != null)
{
this.shadowNode.setAttribute('transform', this.getSvgShadowTransform());
}
}
};
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