InstanceMapTip.java

/*
 * Copyright (c) 2012 Data Harmonisation Panel
 * 
 * All rights reserved. This program and the accompanying materials are made
 * available 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.
 * 
 * You should have received a copy of the GNU Lesser General Public License
 * along with this distribution. If not, see <http://www.gnu.org/licenses/>.
 * 
 * Contributors:
 *     HUMBOLDT EU Integrated Project #030962
 *     Data Harmonisation Panel <http://www.dhpanel.eu>
 */

package eu.esdihumboldt.hale.ui.views.styledmap;

import java.awt.Point;
import java.util.List;

import org.jdesktop.swingx.mapviewer.PixelConverter;

import de.fhg.igd.mapviewer.BasicMapKit;
import de.fhg.igd.mapviewer.tip.HoverMapTip;
import eu.esdihumboldt.hale.ui.views.styledmap.painter.AbstractInstancePainter;
import eu.esdihumboldt.hale.ui.views.styledmap.painter.InstanceWaypoint;
import eu.esdihumboldt.hale.ui.views.styledmap.painter.SourceInstancePainter;
import eu.esdihumboldt.hale.ui.views.styledmap.painter.TransformedInstancePainter;

/**
 * Map tooltip for instances. Based on {@link AbstractInstancePainter}s.
 * 
 * @author Simon Templer
 */
public class InstanceMapTip extends HoverMapTip {

	private final BasicMapKit mapKit;

	/**
	 * Create instance tool tips.
	 * 
	 * @param mapKit the map kit
	 */
	public InstanceMapTip(BasicMapKit mapKit) {
		this.mapKit = mapKit;
	}

	/**
	 * @see de.fhg.igd.mapviewer.tip.HoverMapTip#getTipText(int, int,
	 *      org.jdesktop.swingx.mapviewer.PixelConverter, int)
	 */
	@Override
	protected String getTipText(int x, int y, PixelConverter converter, int zoom) {
		Point point = new Point(x, y);

		String sourceName = null;
		List<SourceInstancePainter> sourcePainters = mapKit
				.getTilePainters(SourceInstancePainter.class);
		if (!sourcePainters.isEmpty()) {
			InstanceWaypoint wp = sourcePainters.get(0).findWaypoint(point);
			if (wp != null) {
				sourceName = wp.getName();
			}
		}

		String transformedName = null;
		List<TransformedInstancePainter> transformedPainters = mapKit
				.getTilePainters(TransformedInstancePainter.class);
		if (!transformedPainters.isEmpty()) {
			InstanceWaypoint wp = transformedPainters.get(0).findWaypoint(point);
			if (wp != null) {
				transformedName = wp.getName();
			}
		}

		if (sourceName != null && sourceName.equals(transformedName)) {
			// if both are equal, return one name only
			return sourceName;
		}

		if (sourceName != null) {
			sourceName += " (source)";
		}
		if (transformedName != null) {
			transformedName += " (transformed)";
		}

		if (sourceName != null && transformedName != null) {
			return sourceName + "; " + transformedName;
		}
		else if (sourceName != null) {
			return sourceName;
		}
		else if (transformedName != null) {
			return transformedName;
		}

		return null;
	}

}