beepanel.java

图像检索的代码b

/*
 * This file is part of Caliph & Emir.
 *
 * Caliph & Emir 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 2 of the License, or
 * (at your option) any later version.
 *
 * Caliph & Emir 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 Caliph & Emir; if not, write to the Free Software
 * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
 *
 * Copyright statement:
 * --------------------
 * (c) 2002-2004 by Mathias Lux ([e-mail]) and the Know-Center Graz
 * Inffeldgasse 21a, 8010 Graz, Austria
 * http://www.know-center.at
 */
package at.know.center.wv_wr.imb.objectcatalog.semanticscreator;

import static java.lang.Thread.sleep;
import at.know.center.wv_wr.imb.objectcatalog.OCToolkit;
import at.know.center.wv_wr.imb.objectcatalog.mpeg7tools.Mpeg7FileFilter;
import at.know.center.wv_wr.imb.objectcatalog.mpeg7tools.XMLFileFilter;
import at.lux.fotoannotation.utils.TextChangesListener;
import at.lux.grapviz.*;
import org.jdom.Document;
import org.jdom.Element;
import org.jdom.JDOMException;
import org.jdom.Namespace;
import org.jdom.input.SAXBuilder;

import javax.imageio.ImageIO;
import javax.swing.*;
import javax.swing.filechooser.FileFilter;
import java.awt.*;
import java.awt.datatransfer.DataFlavor;
import java.awt.datatransfer.Transferable;
import java.awt.datatransfer.UnsupportedFlavorException;
import java.awt.dnd.DropTarget;
import java.awt.dnd.DropTargetAdapter;
import java.awt.dnd.DropTargetDropEvent;
import java.awt.event.*;
import java.awt.image.BufferedImage;
import java.io.IOException;
import java.util.*;
import java.util.List;

public class BeePanel extends JPanel implements ActionListener {
    private LinkedList<EmbedderThread> running = new LinkedList<EmbedderThread>();
    private Vector objects, relations;
    private SemanticObjectRepresentation draggingObject, highlightedObject;
    private SemanticRelationRepresentation highlightedRelation;
    private Point pressedAt;
    private Point offset, clickedAt, startRel, endRel;
    // Logger logger = Logger.getLogger(BeePanel.class);
    private int state;
    private JPopupMenu menu;
    private JMenuItem addObject, remObject, remRelation, distributeElements, cascadeElements, importFile, about, embedElements;
    private BeeDataExchange parent;
    private BufferedImage logo, background;
    private DropTarget dt;

    public BeePanel(BeeDataExchange parent) {
        super();
        this.parent = parent;
        dt = new DropTarget(this, new DropTargetAdapter() {
            public void drop(DropTargetDropEvent dtde) {
                Point p = dtde.getLocation();
                Transferable t = dtde.getTransferable();
                try {
                    String s = (String) t.getTransferData(DataFlavor.stringFlavor);
                    addObjectFromDND(p, s.trim());
                } catch (UnsupportedFlavorException e) {
                    e.printStackTrace();
                } catch (IOException e) {
                    e.printStackTrace();
                }
            }
        });

//        this.addKeyListener(new KeyAdapter() {
//            /**
//             * Invoked when a key has been typed.
//             * This event occurs when a key press is followed by a key release.
//             */
//            public void keyTyped(KeyEvent e) {
//                // Wird ENTFERNEN gedr點kt, so werden alle markierten
//                // Elemente gel鰏cht :)
//                System.out.println("pressed: " + e.getKeyCode());
//                if (e.getKeyCode() == KeyEvent.VK_DELETE) {
//                }
//            }
//        });

        this.setDropTarget(dt);
        try {
            logo = ImageIO.read(BeePanel.class.getResource("logo.png"));
        } catch (Exception ioex) {
            ioex.printStackTrace();
        }
        this.setDoubleBuffered(true);
        objects = new Vector();
        relations = new Vector();
        draggingObject = null;
        highlightedObject = null;
        highlightedRelation = null;
        pressedAt = null;

        menu = new JPopupMenu();
        addObject = new JMenuItem("add object");
        addObject.setActionCommand("addObject");
        addObject.addActionListener(this);
        remObject = new JMenuItem("remove object");
        remObject.addActionListener(this);
        remObject.setActionCommand("remObject");
        JMenuItem remMarkedObject = new JMenuItem("remove marked objects");
        remMarkedObject.addActionListener(this);
        remMarkedObject.setActionCommand("remMarked");
        remRelation = new JMenuItem("remove relation");
        remRelation.addActionListener(this);
        remRelation.setActionCommand("remRelation");
        cascadeElements = new JMenuItem("cascade elements");
        cascadeElements.addActionListener(this);
        cascadeElements.setActionCommand("cascade");
        distributeElements = new JMenuItem("distribute elements");
        distributeElements.addActionListener(this);
        distributeElements.setActionCommand("distribute");
        embedElements = new JMenuItem("embed elements");
        embedElements.addActionListener(this);
        embedElements.setActionCommand("embed");
        importFile = new JMenuItem("import description ...");
        importFile.addActionListener(this);
        importFile.setActionCommand("import");
        about = new JMenuItem("About ...");
        about.addActionListener(this);
        about.setActionCommand("about");

        // menu.add(addObject);
        menu.add(remObject);
        menu.add(remMarkedObject);
        // menu.addSeparator();
        menu.add(remRelation);
        menu.addSeparator();
        menu.add(cascadeElements);
        menu.add(distributeElements);
        menu.add(embedElements);
        menu.add(importFile);
        menu.addSeparator();
        menu.add(about);
        this.addComponentListener(new ComponentAdapter() {
            public void componentResized(ComponentEvent e) {
                background = null;
                super.componentResized(e);

            }
        });

        this.addMouseMotionListener(new MouseMotionAdapter() {
            public void mouseMoved(MouseEvent e) {
                checkIfIsInObject(e.getPoint());
                repaint();
            }

            public void mouseDragged(MouseEvent e) {
                if (pressedAt != null && draggingObject != null) {
                    Point p = draggingObject.getP();
                    p.setLocation(e.getPoint().x + offset.x, e.getPoint().y + offset.y);
                    if (e.getPoint().x > 0 && e.getPoint().y > 0 && e.getPoint().x < getWidth() && e.getPoint().y < getHeight())
                        draggingObject.setP(p);
                } else if (startRel != null) {
                    endRel = e.getPoint();
                }
                checkIfIsInObject(e.getPoint());
                repaint();
            }
        });

        this.addMouseListener(new BeePanelMouseAdapter());
        background = null;

    }

    protected void paintComponent(Graphics g) {
        Graphics2D g2 = (Graphics2D) g;
        g2.setRenderingHint(RenderingHints.KEY_ANTIALIASING, RenderingHints.VALUE_ANTIALIAS_ON);

        if (!(background != null))
            background = generateBackground();

        g2.clearRect(0, 0, this.getWidth(), this.getHeight());
        g2.drawImage(background, 0, 0, this);
        g2.setFont(Font.decode("Verdana-10"));

        for (Iterator it = objects.iterator(); it.hasNext();) {
            SemanticObjectRepresentation sem = (SemanticObjectRepresentation) it.next();
            sem.drawObject(g2);
        }

        for (Iterator iterator = relations.iterator(); iterator.hasNext();) {
            SemanticRelationRepresentation relation = (SemanticRelationRepresentation) iterator.next();
            relation.drawRelation(g2);
        }
        if (startRel != null && endRel != null) {
            g2.drawLine(startRel.x, startRel.y, endRel.x, endRel.y);
        }
    }

    public void addObject(Point p) {
        String label = JOptionPane.showInputDialog("Please give a name for the new object:");
        objects.add(new SemanticObjectRepresentation(p, label));
        TextChangesListener.getInstance().fireDataChanged();
        repaint();
        embedElements();
    }

    public void addObject(Point p, String label) {
        objects.add(new SemanticObjectRepresentation(p, label));
        TextChangesListener.getInstance().fireDataChanged();
        repaint();
        embedElements();
    }

    public void addObject(Point p, Element node) {
        objects.add(new SemanticObjectRepresentation(p, node));
        TextChangesListener.getInstance().fireDataChanged();
        repaint();
        embedElements();
    }

    private void checkIfIsInObject(Point p) {
        highlightedObject = null;
        highlightedRelation = null;
        for (Iterator iterator = objects.iterator(); iterator.hasNext();) {
            SemanticObjectRepresentation sem = (SemanticObjectRepresentation) iterator.next();
            if (sem.checkIfInside(p)) {
                highlightedObject = sem;
            }
        }
        for (Iterator iterator = relations.iterator(); iterator.hasNext();) {
            SemanticRelationRepresentation rel = (SemanticRelationRepresentation) iterator.next();
            if (rel.contains(p)) {
                highlightedRelation = rel;
            }
        }
    }

    private void checkIfPressedInObject(Point p) {
        for (Iterator iterator = objects.iterator(); iterator.hasNext();) {
            SemanticObjectRepresentation sem = (SemanticObjectRepresentation) iterator.next();
            if (sem.checkIfInside(p)) {
                draggingObject = sem;
                offset = new Point(sem.getP().x - pressedAt.x, sem.getP().y - pressedAt.y);
            }
        }
    }

    private void showMenu(int x, int y) {
        if (highlightedObject != null)
            remObject.setEnabled(true);
        else
            remObject.setEnabled(false);
        if (highlightedRelation != null)
            remRelation.setEnabled(true);
        else