MapLabel - created in 2009/2010

gistfile1.java

import java.awt.Cursor;
import java.awt.Point;
import java.awt.Toolkit;
import java.awt.datatransfer.Clipboard;
import java.awt.datatransfer.ClipboardOwner;
import java.awt.datatransfer.StringSelection;
import java.awt.datatransfer.Transferable;
import java.awt.event.MouseAdapter;
import java.awt.event.MouseEvent;
import java.net.URL;

import javax.swing.ImageIcon;
import javax.swing.JLabel;

import worldmaptool.WorldMapTool.PicInfo;

/**
 * @author Bradsta
 * 
 *Panel used for image and calculations
 */

@SuppressWarnings("serial")
public class MapLabel extends JLabel {
  
        private final URL imageURL;
        private Point hoveredPoint = null;
        private Point clickedPoint = null;
        private double pixelsPerTileH;
        private double pixelsPerTileW;

        MapLabel(URL picURL) {
                this.imageURL = picURL;
        }

        public void setIcon() {
                setCursor(new Cursor(Cursor.CROSSHAIR_CURSOR));
                setIcon(new ImageIcon(imageURL));
        }

        static StringSelection st = new StringSelection("");
        static ClipboardOwner c = new ClipboardOwner() {
                public void lostOwnership(Clipboard clipboard, Transferable contents) {
                	//added to clipboard in getHoveringTile()
                }
        };

        public Point getHoveringTile(PicInfo PI) throws InterruptedException {
                this.addMouseListener(new MouseAdapter() {
                        @Override
                        public void mouseClicked(MouseEvent arg0) {
                                clickedPoint = arg0.getPoint();
                        }
                });
                pixelsPerTileH = (double) ((double) PI.dimensions.y / (double) (PI.originTile.y - PI.northTile.y));
                pixelsPerTileW = (double) ((double) PI.dimensions.x / (double) (PI.eastTile.x - PI.northTile.x));
                
                hoveredPoint = getMousePosition();
                if (clickedPoint != null) {
                        Point clicked = new Point((int) Math.nextUp((double) PI.northTile.x + ((double) clickedPoint.getX() / (double) pixelsPerTileW)),
                                        (int) Math.nextUp((double) PI.northTile.y + ((double) clickedPoint.getY() / (double) pixelsPerTileH)));
                        st = new StringSelection("(" + (int) clicked.x + ","
                                        + (int) clicked.y + ")");
                        Toolkit.getDefaultToolkit().getSystemClipboard().setContents(st, c);
                        clickedPoint = null;
                }
                if (hoveredPoint != null)
                        return new Point((int) Math.nextUp((double) PI.northTile.x + ((double) hoveredPoint.getX() / (double) pixelsPerTileW)),
                                        (int) Math.nextUp((double) PI.northTile.y + ((double) hoveredPoint.getY() / (double) pixelsPerTileH)));
                else
                        return new Point(0, 0);
        }
}