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com.hfg xml, html, svg, and bioinformatics utility library
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package com.hfg.svg;

import com.hfg.css.CSS;
import com.hfg.css.CSSDeclaration;
import com.hfg.graphics.Graphics2DState;
import com.hfg.graphics.ColorUtil;
import com.hfg.xml.XMLTag;

import java.awt.*;
import java.awt.geom.Ellipse2D;
import java.util.List;

//------------------------------------------------------------------------------
/**
 * Object representation of an SVG (Scalable Vector Graphics) 'ellipse' tag.
 * 
 * @author J. Alex Taylor, hairyfatguy.com
 * 
 */
//------------------------------------------------------------------------------
// com.hfg XML/HTML Coding Library
//
// This library is free software; you can redistribute it and/or
// modify it under the terms of the GNU Lesser General Public
// License as published by the Free Software Foundation; either
// version 2.1 of the License, or (at your option) any later version.
//
// This library is distributed in the hope that it will be useful,
// but WITHOUT ANY WARRANTY; without even the implied warranty of
// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
// Lesser General Public License for more details.
//
// You should have received a copy of the GNU Lesser General Public
// License along with this library; if not, write to the Free Software
// Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
//
// J. Alex Taylor, President, Founder, CEO, COO, CFO, OOPS hairyfatguy.com
// [email protected]
//------------------------------------------------------------------------------

public class SvgEllipse extends AbstractSvgNode implements SvgNode
{

   //##########################################################################
   // CONSTRUCTORS
   //##########################################################################

   //---------------------------------------------------------------------------
   public SvgEllipse()
   {
      super(SVG.ellipse);
   }

   //---------------------------------------------------------------------------
   public SvgEllipse(XMLTag inXMLTag)
   {
      this();
      initFromXMLTag(inXMLTag);
   }

   //##########################################################################
   // PUBLIC METHODS
   //##########################################################################


   //---------------------------------------------------------------------------
   public SvgEllipse setId(String inValue)
   {
      setAttribute(SvgAttr.id, inValue);
      return this;
   }

   //---------------------------------------------------------------------------
   public SvgEllipse setRx(int inValue)
   {
      setAttribute(SvgAttr.rx, inValue);
      return this;
   }

   //---------------------------------------------------------------------------
   public SvgEllipse setRy(int inValue)
   {
      setAttribute(SvgAttr.ry, inValue);
      return this;
   }

   //---------------------------------------------------------------------------
   public SvgEllipse setCx(int inValue)
   {
      setAttribute(SvgAttr.cx, inValue);
      return this;
   }

   //---------------------------------------------------------------------------
   public SvgEllipse setCy(int inValue)
   {
      setAttribute(SvgAttr.cy, inValue);
      return this;
   }

   //--------------------------------------------------------------------------
   @Override
   public SvgEllipse addStyle(CharSequence inValue)
   {
      return (SvgEllipse) super.addStyle(inValue);
   }

   //---------------------------------------------------------------------------
   @Override
   public SvgEllipse setStyle(CharSequence inValue)
   {
      return (SvgEllipse) super.setStyle(inValue);
   }

   //---------------------------------------------------------------------------
   public SvgEllipse setFill(Color inColor)
   {
      setAttribute(SvgAttr.fill, (inColor != null ? "#" + ColorUtil.colorToHex(inColor) : SvgAttr.Value.none));
      return this;
   }

   //---------------------------------------------------------------------------
   public SvgEllipse setOpacity(int inPctOpacity)
   {
      setAttribute(SvgAttr.opacity, inPctOpacity);
      return this;
   }

   //---------------------------------------------------------------------------
   public SvgEllipse setFillOpacity(int inPctOpacity)
   {
      setAttribute(SvgAttr.fillOpacity, inPctOpacity);
      return this;
   }

   //---------------------------------------------------------------------------
   public SvgEllipse setStroke(Color inColor)
   {
      setAttribute(SvgAttr.stroke, inColor != null ? "#" + ColorUtil.colorToHex(inColor) : SvgAttr.Value.none);
      return this;
   }

   //---------------------------------------------------------------------------
   public SvgEllipse setStrokeWidth(int inValue)
   {
      setAttribute(SvgAttr.strokeWidth, inValue);
      return this;
   }

   //---------------------------------------------------------------------------
   @Override
   public Rectangle getBoundsBox()
   {
      int cx = (getAttributeValue(SvgAttr.cx) != null ? Integer.parseInt(getAttributeValue(SvgAttr.cx)) : 0);
      int cy = (getAttributeValue(SvgAttr.cy) != null ? Integer.parseInt(getAttributeValue(SvgAttr.cy)) : 0);
      int rx =  (getAttributeValue(SvgAttr.rx) != null ? Integer.parseInt(getAttributeValue(SvgAttr.rx)) : 0);
      int ry =  (getAttributeValue(SvgAttr.ry) != null ? Integer.parseInt(getAttributeValue(SvgAttr.ry)) : 0);

      Ellipse2D ellipse = new Ellipse2D.Float(cx - rx, cy - ry, rx * 2, ry * 2);
      Rectangle boundsBox = ellipse.getBounds();
      adjustBoundsForTransform(boundsBox);

      return boundsBox;
   }

   //--------------------------------------------------------------------------
   @Override
   public void draw(Graphics2D g2, CSS inCSS)
   {
      // Save settings
      Graphics2DState origState = new Graphics2DState(g2);

      int cx = Integer.parseInt(getAttributeValue(SvgAttr.cx));
      int cy = Integer.parseInt(getAttributeValue(SvgAttr.cy));
      int rx = Integer.parseInt(getAttributeValue(SvgAttr.rx));
      int ry = Integer.parseInt(getAttributeValue(SvgAttr.ry));

      List cssDeclarations = getCSSDeclarations(inCSS);

      applyTransforms(g2);

      Ellipse2D ellipse = new Ellipse2D.Float(cx - rx, cy - ry, rx * 2, ry * 2);

      // Fill the ellipse.
      Paint paint = getG2Paint(cssDeclarations);
      if (paint != null)
      {
         g2.setPaint(paint);
         g2.fill(ellipse);
      }

      // Outline the ellipse.
      paint = getG2StrokeColor(cssDeclarations);
      if (paint != null)
      {
         Stroke stroke = getG2Stroke(cssDeclarations);
         if (stroke != null)
         {
            g2.setStroke(stroke);
         }

         g2.setPaint(paint);
         g2.draw(ellipse);
      }

      // Restore settings
      origState.applyTo(g2);
   }

}