/**
 * Copyright 2004-2016 Riccardo Solmi. All rights reserved.
 * This file is part of the Whole Platform.
 *
 * The Whole Platform 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 3 of the License, or
 * (at your option) any later version.
 *
 * The Whole Platform 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 the Whole Platform. If not, see <http://www.gnu.org/licenses/>.
 */
package org.whole.lang.ui.notations.map.borders;

import org.eclipse.draw2d.Graphics;
import org.eclipse.draw2d.IFigure;
import org.eclipse.draw2d.geometry.Insets;
import org.eclipse.draw2d.geometry.Rectangle;
import org.eclipse.swt.graphics.Color;

/**
 * @author Riccardo Solmi
 */
public class EllipseStyledBorder extends AbstractStyledBorder {
	public EllipseStyledBorder() {
		super();
	}
	public EllipseStyledBorder(IStyledBorder styledBorder) {
		super(styledBorder);
	}
	public EllipseStyledBorder(Color lineColor, int lineStyle, int lineWidth) {
		super(lineColor, lineStyle, lineWidth);
	}

	@Override
	public Insets getInsets(IFigure figure) {
		Insets result = super.getInsets(figure);

		Rectangle bounds = figure.getBounds();
		if (bounds.width > 0 && bounds.height > 0) {
			int rectWidth = (int) (bounds.width / Math.sqrt(2));
			int rectHeight = (int) (bounds.height / Math.sqrt(2));
			int dw = (bounds.width - rectWidth)/2;
			int dh = (bounds.height - rectHeight)/2;
			
			result.top += dh;
			result.bottom += dh;
			result.left += dw;
			result.right += dw;			
		}
		return result;
	}

	public void paintBackground(IFigure figure, Graphics graphics, Insets insets) {
		if (getFillColor() != null) {
			updateTempRect(figure, insets);

			graphics.setBackgroundColor(getFillColor());

			graphics.fillOval(tempRect);
		}
	}
	public void paint(IFigure figure, Graphics graphics, Insets insets) {
		updateTempRect(figure, insets);

		graphics.setLineWidth(getLineWidth());
		graphics.setLineStyle(getLineStyle());
		graphics.setForegroundColor(getLineColor());

		graphics.drawOval(tempRect);
	}
	protected void updateTempRect(IFigure figure, Insets insets) {
		/*tempRect =*/ getPaintRectangle(figure, insets);

		int lineWidth = getLineWidth();
		if (lineWidth % 2 == 1) {
			tempRect.width--;
			tempRect.height--;
		}
		tempRect.shrink(lineWidth / 2, lineWidth / 2);
	}

}