Initial code check in continued

src/map/SelectionAdapter.java

@@ -0,0 +1,103 @@
+/*******************************************************************************
+ *     SDR Trunk 
+ *     Copyright (C) 2014 Dennis Sheirer
+ * 
+ *     This program 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 3 of the License, or
+ *     (at your option) any later version.
+ * 
+ *     This program 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 General Public License for more details.
+ * 
+ *     You should have received a copy of the GNU General Public License
+ *     along with this program.  If not, see <http://www.gnu.org/licenses/>
+ ******************************************************************************/
+package map;
+
+import java.awt.Rectangle;
+import java.awt.event.MouseAdapter;
+import java.awt.event.MouseEvent;
+import java.awt.geom.Point2D;
+
+import org.jdesktop.swingx.JXMapViewer;
+
+/**
+ * Creates a selection rectangle based on mouse input
+ * Also triggers repaint events in the viewer
+ * @author Martin Steiger
+ */
+public class SelectionAdapter extends MouseAdapter 
+{
+	private boolean dragging;
+	private JXMapViewer viewer;
+
+	private Point2D startPos = new Point2D.Double();
+	private Point2D endPos = new Point2D.Double();
+
+	/**
+	 * @param viewer the jxmapviewer
+	 */
+	public SelectionAdapter(JXMapViewer viewer)
+	{
+		this.viewer = viewer;
+	}
+
+	@Override
+	public void mousePressed(MouseEvent e)
+	{
+		if (e.getButton() != MouseEvent.BUTTON3)
+			return;
+		
+		startPos.setLocation(e.getX(), e.getY());
+		endPos.setLocation(e.getX(), e.getY());
+		
+		dragging = true;
+	}
+
+	@Override
+	public void mouseDragged(MouseEvent e)
+	{
+		if (!dragging)
+			return;
+		
+		endPos.setLocation(e.getX(), e.getY());
+		
+		viewer.repaint();
+	}
+
+	@Override
+	public void mouseReleased(MouseEvent e)
+	{
+		if (!dragging)
+			return;
+		
+		if (e.getButton() != MouseEvent.BUTTON3)
+			return;
+		
+		viewer.repaint();
+		
+		dragging = false;
+	}
+
+	/**
+	 * @return the selection rectangle
+	 */
+	public Rectangle getRectangle()
+	{
+		if (dragging)
+		{
+			int x1 = (int) Math.min(startPos.getX(), endPos.getX());
+			int y1 = (int) Math.min(startPos.getY(), endPos.getY());
+			int x2 = (int) Math.max(startPos.getX(), endPos.getX());
+			int y2 = (int) Math.max(startPos.getY(), endPos.getY());
+			
+			return new Rectangle(x1, y1, x2-x1, y2-y1);
+		}
+		
+		return null;
+	}
+
+}