org.fosstrak.hal.impl.sim.graphic.Antenna.java Source code

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Here is the source code for org.fosstrak.hal.impl.sim.graphic.Antenna.java

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/*
 * Copyright (C) 2007 ETH Zurich
 *
 * This file is part of Fosstrak (www.fosstrak.org).
 *
 * Fosstrak is free software; you can redistribute it and/or
 * modify it under the terms of the GNU Lesser General Public
 * License version 2.1, as published by the Free Software Foundation.
 *
 * Fosstrak 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 Fosstrak; if not, write to the Free
 * Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
 * Boston, MA  02110-1301  USA
 */

package org.fosstrak.hal.impl.sim.graphic;

import java.awt.Color;
import java.awt.Dimension;
import java.awt.Font;
import java.awt.Graphics;
import java.awt.Point;
import java.net.URL;
import java.util.HashSet;
import java.util.Set;

import javax.swing.Icon;
import javax.swing.ImageIcon;
import javax.swing.JComponent;

import org.fosstrak.hal.util.ResourceLocator;
import org.apache.commons.logging.Log;
import org.apache.commons.logging.LogFactory;

/**
 * @author regli
 */
public class Antenna extends JComponent {

    /** the serial version uid */
    private static final long serialVersionUID = 1L;

    /** the logger */
    private static Log log = LogFactory.getLog(Antenna.class);

    private String defaultfilename = "/images/rfid-antenna_default.png";

    /** the id of the rfid antenna */
    private final String id;
    /** the image icon of the rfid antenna */
    private final Icon icon;
    /** contains the tags which are in the range of this antenna */
    private final Set tags = new HashSet();
    /** graphic simulator to which this antenna belongs to */
    private final IGraphicSimulator simulator;
    /** cable from the antenna to the reader */
    private Cable cable;

    /**
     * the constructor creates a new graphical representation of a rfid antenna 
     * 
     * @param id of the new rfid antenna
     * @param simulator graphic simulator to which this rfid antenna belongs to
     */
    public Antenna(String id, final IGraphicSimulator simulator) {
        super();

        // set properties
        this.id = id;
        this.simulator = simulator;
        String filename = simulator.getProperties().getString("AntennaImage");
        URL fileurl = ResourceLocator.getURL(filename, defaultfilename, this.getClass());
        icon = new ImageIcon(fileurl);
    }

    public void setPosition(Point pos) {
        setBounds(new java.awt.Rectangle(pos,
                new Dimension(simulator.getProperty("AntennaWidth"), simulator.getProperty("AntennaHeight"))));
        if (cable != null) {
            cable.setAntennaPos(pos);
        }
    }

    /**
     * paints the rfid antenna
     * 
     * @param g the graphic representation of the component
     */
    protected void paintComponent(Graphics g) {
        icon.paintIcon(this, g, 0, 0);
        g.setColor(Color.BLACK);
        g.setFont(new Font(simulator.getProperties().getString("AntennaLabelFont"), 0,
                simulator.getProperty("AntennaLabelSize")));
        g.drawString(id, (15 - id.length()) * 7 / 2, simulator.getProperty("AntennaHeight"));
    }

    /**
     * checks if the tag is in the range of the antenna
     * 
     * @param tag to check
     */
    public void checkTag(Tag tag, Reader reader) {
        if (getBounds().intersects(tag.getBounds())) {
            if (tags.add(tag)) {
                //            simulator.enterEvent(reader.getId(), getId(), tag.getId());
                simulator.enterEvent(reader.getId(), getId(), tag.getSimTag());
                log.info("'" + tag.getId() + "' ENTER the range of antenna '" + id + "' of reader '"
                        + reader.getId() + "'");
            }
        } else {
            if (tags.remove(tag)) {
                //            simulator.exitEvent(reader.getId(), getId(), tag.getId());
                simulator.exitEvent(reader.getId(), getId(), tag.getSimTag());
                log.info("'" + tag.getId() + "' EXIT the range of antenna '" + id + "' of reader '" + reader.getId()
                        + "'");
            }
        }
    }

    /**
     * checks if the tag is in the range of the antenna
     * 
     * @param tag to check
     */
    public void checkTag(Tag tag) {
        if (getBounds().intersects(tag.getBounds())) {
            if (tags.add(tag)) {
                log.info("'" + tag.getId() + "' ENTER the range of antenna '" + id + "'");
                //            simulator.enterEvent(null, getId(), tag.getId());
                simulator.enterEvent(null, getId(), tag.getSimTag());
            }
        } else {
            if (tags.remove(tag)) {
                log.info("'" + tag.getId() + "' EXIT the range of antenna '" + id + "'");
                //            simulator.exitEvent(null, getId(), tag.getId());
                simulator.exitEvent(null, getId(), tag.getSimTag());
            }
        }
    }

    /**
     * returns the id of the rfid antenna
     * 
     * @return id
     */
    public String getId() {
        return id;
    }

    /**
     * returns a string representation of the rfid antenna
     * 
     * @return string representation
     */
    public String toString() {
        return id;
    }

    /**
     * set cable
     * 
     * @param cable
     */
    public void setCable(Cable cable) {
        this.cable = cable;
    }

    /**
     * get cable
     * 
     * @return cable
     */
    public Cable getCable() {
        return cable;
    }
}