content: /*
  * Copyright (c) 1997 - 2016
  * Actelion Pharmaceuticals Ltd.
  * Gewerbestrasse 16
  * CH-4123 Allschwil, Switzerland
  *
  * All rights reserved.
  *
  * Redistribution and use in source and binary forms, with or without
  * modification, are permitted provided that the following conditions are met:
  *
  * 1. Redistributions of source code must retain the above copyright notice, this
  *    list of conditions and the following disclaimer.
  * 2. Redistributions in binary form must reproduce the above copyright notice,
  *    this list of conditions and the following disclaimer in the documentation
  *    and/or other materials provided with the distribution.
  * 3. Neither the name of the the copyright holder nor the
  *    names of its contributors may be used to endorse or promote products
  *    derived from this software without specific prior written permission.
  *
  * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND
  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
  * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
  * DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR
  * ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
  * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
  * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
  * ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
  * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
  * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
  *
  */
  
  package com.actelion.research.chem;
  
  
  import com.actelion.research.gui.generic.GenericPolygon;
  
  import java.awt.*;
  import java.awt.font.GlyphVector;
  import java.awt.geom.Ellipse2D;
  import java.awt.geom.GeneralPath;
  import java.awt.geom.Line2D;
  import java.util.ArrayList;
  
  public class Depictor2D extends AbstractDepictor<Graphics2D> {
      private static boolean isMac = (System.getProperty("os.name").toLowerCase().indexOf("mac") >= 0);
  
      private int			mpTextSize;
  	private double      mCurrentStringWidth;
  	private float		mLineWidth;
  	private ArrayList<Font>	mFonts;
  	private String      mCurrentString;
  	private Font        mCurrentFont;
  	private GlyphVector mCurrentGlyphVector;
  
  	public Depictor2D(StereoMolecule mol) {
  		super(mol);
  		}
  
  	public Depictor2D(StereoMolecule mol, int displayMode) {
  		super(mol, displayMode);
  		}
  
  	@Override
  	protected void init() {
  		super.init();
  		mFonts = new ArrayList<Font>();
  		mLineWidth = 1.0f;
  		}
  
  	@Override
  	protected void drawBlackLine(DepictorLine theLine) {
  		// Lines on OSX are shifted left and down when drawn in Graphics2D by 0.5. We must compensate.
  		if (isMac)
  			mContext.draw(new Line2D.Double(theLine.x1-0.5, theLine.y1-0.5, theLine.x2-0.5, theLine.y2-0.5));
  		else
  			mContext.draw(new Line2D.Double(theLine.x1, theLine.y1, theLine.x2, theLine.y2));
  		}
  
  	@Override
      protected void drawDottedLine(DepictorLine theLine) {
          Stroke stroke = mContext.getStroke();
          mContext.setStroke(new BasicStroke(
          						mLineWidth,
                                  BasicStroke.CAP_ROUND,
                                  BasicStroke.JOIN_ROUND,
                                  mLineWidth,
                                  new float[] {3.0f*mLineWidth},
                                  0f));
  
          drawBlackLine(theLine);
  
          mContext.setStroke(stroke);
          }
  
  	@Override
  	protected void drawString(String theString, double x, double y) {
  		double strWidth = getStringWidth(theString);
  		mContext.drawGlyphVector(mCurrentGlyphVector, (float)(x-strWidth/2.0),
  										(float)(y+(float)mpTextSize/3.0));
  		}
  
  	@Override
  	protected void drawPolygon(GenericPolygon p) {
  		GeneralPath polygon = new GeneralPath(GeneralPath.WIND_NON_ZERO, p.getSize());
  		polygon.moveTo(p.getX(0), p.getY(0));
  		for (int i=1; i<p.getSize(); i++)
  			polygon.lineTo(p.getX(i), p.getY(i));
  		polygon.closePath();
  
  		mContext.fill(polygon);
  
  		if (isMac) {
  			polygon = new GeneralPath(GeneralPath.WIND_NON_ZERO, p.getSize());
  			polygon.moveTo(p.getX(0)-0.5f, p.getY(0)-0.5f);
  			for (int i=1; i<p.getSize(); i++)
  				polygon.lineTo(p.getX(i)-0.5f, p.getY(i)-0.5f);
  			polygon.closePath();
  			}
  		
  		mContext.draw(polygon);
  		}
  
  	@Override
  	protected void fillCircle(double x, double y, double d) {
  		if (isMac)
  			mContext.fill(new Ellipse2D.Double(x-0.5f, y-0.5f, d, d));
  		else
  			mContext.fill(new Ellipse2D.Double(x, y, d, d));
  		}
  
  	@Override
  	protected double getStringWidth(String theString) {
  		if (mContext != null) {
  			if (!theString.equals(mCurrentString)
  				|| mCurrentFont != ((Graphics2D) mContext).getFont()) {
  				mCurrentString = theString;
  				mCurrentFont = ((Graphics2D) mContext).getFont();
  				mCurrentGlyphVector = ((Graphics2D) mContext).getFont().createGlyphVector(((Graphics2D) mContext).getFontRenderContext(), theString);
  				mCurrentStringWidth = mCurrentGlyphVector.getLogicalBounds().getWidth();
  			}
  		}
  		return mCurrentStringWidth;
  		}
  
  	@Override
  	protected void setTextSize(int theSize) {
  		mpTextSize = (int)theSize;
  		if (mContext != null) {
  			if (mContext.getFont().getSize() != theSize) {
  				for (int i = 0; i < mFonts.size(); i++) {
  					if ((mFonts.get(i)).getSize() == theSize) {
  						mContext.setFont(mFonts.get(i));
  						return;
  						}
  					}
  				Font newFont = mContext.getFont().deriveFont(0, theSize);
  //				Font newFont = new Font("Helvetica", 0, (int) theSize);
  				mFonts.add(newFont);
  				mContext.setFont(newFont);
  				}
  			}
  		}
  
  	@Override
      public int getTextSize() {
          return mpTextSize;
          }
  
  	@Override
  	protected double getLineWidth() {
  		return mLineWidth;
  		}
  
  	@Override
  	protected void setLineWidth(double lineWidth) {
  		mLineWidth = (float)lineWidth;
  		mContext.setStroke(new BasicStroke((float)lineWidth, BasicStroke.CAP_ROUND, BasicStroke.JOIN_ROUND));
  		}
  
  	@Override
  	protected void setRGB(int rgb) {
  		Color color = new Color(rgb);
  	    mContext.setColor(color);
  		mContext.setPaint(color);
  		}
  	}
  
  