package net.sf.latexdraw.generators.svg;
import net.sf.latexdraw.glib.models.ShapeFactory;
import net.sf.latexdraw.glib.models.interfaces.shape.IEllipse;
import net.sf.latexdraw.glib.models.interfaces.shape.IPoint;
import net.sf.latexdraw.glib.views.pst.PSTricksConstants;
import net.sf.latexdraw.parsers.svg.SVGAttributes;
import net.sf.latexdraw.parsers.svg.SVGDocument;
import net.sf.latexdraw.parsers.svg.SVGElement;
import net.sf.latexdraw.parsers.svg.SVGEllipseElement;
import net.sf.latexdraw.parsers.svg.SVGGElement;
import net.sf.latexdraw.util.LNamespace;
/**
* Defines a SVG generator for an ellipse.<br>
*<br>
* This file is part of LaTeXDraw.<br>
* Copyright (c) 2005-2014 Arnaud BLOUIN<br>
*<br>
* LaTeXDraw is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 2 of the License, or
* (at your option) any later version.<br>
*<br>
* LaTeXDraw is distributed without any warranty; without even the
* implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR
* PURPOSE. See the GNU General Public License for more details.<br>
*<br>
* 11/11/07<br>
* @author Arnaud BLOUIN
* @version 3.0
*/
class LEllipseSVGGenerator extends LShapeSVGGenerator<IEllipse> {
/**
* Creates a generator of SVG ellipse.
* @param ellipse The ellipse shape used for the generation.
* @throws IllegalArgumentException If ellipse is null.
* @since 2.0
*/
protected LEllipseSVGGenerator(final IEllipse ellipse) {
super(ellipse);
}
/**
* Creates an ellipse from an SVG ellipse element.
* @param elt The source element.
* @since 2.0.0
*/
protected LEllipseSVGGenerator(final SVGEllipseElement elt) {
this(ShapeFactory.createEllipse());
setSVGParameters(elt);
setEllipseParameters(elt, 0.);
applyTransformations(elt);
}
/**
* Creates an ellipse from a latexdraw-SVG element.
* @param elt The source element.
* @since 2.0.0
*/
protected LEllipseSVGGenerator(final SVGGElement elt, final boolean withTransformation) {
this(ShapeFactory.createEllipse());
final SVGElement elt2 = getLaTeXDrawElement(elt, null);
if(elt==null || !(elt2 instanceof SVGEllipseElement))
throw new IllegalArgumentException();
setSVGLatexdrawParameters(elt);
setSVGParameters(elt2);
setEllipseParameters((SVGEllipseElement)elt2, getPositionGap());
setSVGShadowParameters(getLaTeXDrawElement(elt, LNamespace.XML_TYPE_SHADOW));
setSVGDbleBordersParameters(getLaTeXDrawElement(elt, LNamespace.XML_TYPE_DBLE_BORDERS));
if(withTransformation)
applyTransformations(elt);
}
/**
* Sets the ellipse parameters.
* @param ellipseElt The source SVG ellipse element.
* @param gap The gap used to define the latexdraw ellipse.
* @since 3.0
*/
protected void setEllipseParameters(final SVGEllipseElement ellipseElt, final double gap) {
final double width = 2.*ellipseElt.getRx()-gap;
final double height = 2.*ellipseElt.getRy()-gap;
shape.setPosition(ellipseElt.getCx()-width/2., ellipseElt.getCy()+height/2.);
shape.setWidth(width);
shape.setHeight(height);
}
@Override
public SVGElement toSVG(final SVGDocument doc) {
if(doc==null || doc.getFirstChild().getDefs()==null)
throw new IllegalArgumentException();
final IPoint tl = shape.getTopLeftPoint();
final IPoint br = shape.getBottomRightPoint();
final double tlx = tl.getX();
final double tly = tl.getY();
final double brx = br.getX();
final double bry = br.getY();
SVGElement elt;
final SVGElement root = new SVGGElement(doc);
root.setAttribute(LNamespace.LATEXDRAW_NAMESPACE+':'+LNamespace.XML_TYPE, LNamespace.XML_TYPE_ELLIPSE);
root.setAttribute(SVGAttributes.SVG_ID, getSVGID());
final double gap = getPositionGap();
final double width = Math.max(1., (brx-tlx+gap)/2.);
final double height = Math.max(1., (bry-tly+gap)/2.);
final double x = (brx+tlx)/2.;
final double y = (bry+tly)/2.;
if(shape.hasShadow()) {
elt = new SVGEllipseElement(x, y, width, height, doc);
setSVGShadowAttributes(elt, true);
root.appendChild(elt);
}
if(shape.hasShadow() && !shape.getLineStyle().getLatexToken().equals(PSTricksConstants.LINE_NONE_STYLE)) {
// The background of the borders must be filled is there is a shadow.
elt = new SVGEllipseElement(x, y, width, height, doc);
setSVGBorderBackground(elt, root);
}
elt = new SVGEllipseElement(x, y, width, height, doc);
setSVGAttributes(doc, elt, true);
root.appendChild(elt);
if(shape.hasDbleBord()) {
elt = new SVGEllipseElement(x, y, width, height, doc);
setSVGDoubleBordersAttributes(elt);
root.appendChild(elt);
}
setSVGRotationAttribute(root);
return root;
}
}