/* Copyright or (C) or Copr. GET / ENST, Telecom-Paris, Ludovic Apvrille
 * 
 * ludovic.apvrille AT enst.fr
 * 
 * This software is a computer program whose purpose is to allow the
 * edition of TURTLE analysis, design and deployment diagrams, to
 * allow the generation of RT-LOTOS or Java code from this diagram,
 * and at last to allow the analysis of formal validation traces
 * obtained from external tools, e.g. RTL from LAAS-CNRS and CADP
 * from INRIA Rhone-Alpes.
 * 
 * This software is governed by the CeCILL  license under French law and
 * abiding by the rules of distribution of free software.  You can  use,
 * modify and/ or redistribute the software under the terms of the CeCILL
 * license as circulated by CEA, CNRS and INRIA at the following URL
 * "http://www.cecill.info".
 * 
 * As a counterpart to the access to the source code and  rights to copy,
 * modify and redistribute granted by the license, users are provided only
 * with a limited warranty  and the software's author,  the holder of the
 * economic rights,  and the successive licensors  have only  limited
 * liability.
 * 
 * In this respect, the user's attention is drawn to the risks associated
 * with loading,  using,  modifying and/or developing or reproducing the
 * software by the user in light of its specific status of free software,
 * that may mean  that it is complicated to manipulate,  and  that  also
 * therefore means  that it is reserved for developers  and  experienced
 * professionals having in-depth computer knowledge. Users are therefore
 * encouraged to load and test the software's suitability as regards their
 * requirements in conditions enabling the security of their systems and/or
 * data to be ensured and,  more generally, to use and operate it in the
 * same conditions as regards security.
 * 
 * The fact that you are presently reading this means that you have had
 * knowledge of the CeCILL license and that you accept its terms.
 */

package ui.window;

import ui.ColorManager;
import ui.MainGUI;
import ui.TDiagramPanel;

import javax.swing.*;
import java.awt.*;
import java.awt.event.MouseEvent;
import java.awt.event.MouseListener;
import java.awt.event.MouseMotionListener;

/**
 * Class JbirdPanel
 * Panel for displaying bird'eyes view of panels
 * Creation: 21/04/2005
 * @version 1.0 21/04/2005
 * @author Ludovic APVRILLE
 */
public class JBirdPanel extends JPanel implements MouseListener, MouseMotionListener {

	private MainGUI mgui;
    private int w, h, wc, wh;
    //private Image image, scaledImage;
    //private Graphics graphics;
    private TDiagramPanel currentTdp;
    //private int startX;
    //private int startY;
    private JScrollBar horizontal, vertical;
    //private int valueH, valueV;
    private double wratio, hratio;
    private boolean go;
    //private Thread t;
    private Rectangle rect;
    private TDiagramPanel tdp;
    
    // Constructor
    public JBirdPanel(MainGUI _mgui) {
        setBackground(ColorManager.DIAGRAM_BACKGROUND);
        mgui = _mgui;
        addMouseListener(this);
        addMouseMotionListener(this);
        startProcess();
    }
    
    @Override
    protected void paintComponent(Graphics g) {
        if (isShowing()) {
            super.paintComponent(g);
            tdp = mgui.getCurrentTDiagramPanel();
            if ((tdp != null) && (go == true)){
                currentTdp = tdp;
                rect = currentTdp.getVisibleRect();
                wc = getSize().width;
                wh = getSize().height;
                w = currentTdp.getWidth();
                h = currentTdp.getHeight();
                
                wratio = ((double)wc) / w;
                hratio = ((double)wh) / h;
                if (hratio < wratio) {
                    wratio = hratio;
                } else {
                    hratio = wratio;
                }
                currentTdp.paintMycomponents(g, false, wratio, hratio);
                g.drawRect(rect.x, rect.y, rect.width, rect.height);
            }
        }
    }
    
    private void centerRectangle(int x, int y) {
        if (rect != null) {
            x = (int)(x - rect.width*wratio/2);
            y = (int)(y - rect.height*hratio/2);
            if (horizontal != null) {
                horizontal.setValue((int)(x / wratio));
            }
            if (vertical != null) {
                vertical.setValue((int)(y/hratio));
            }
            
            if ((horizontal != null) || (vertical != null)) {
                repaint();
            }
        }
    }
    
    @Override
    public void mousePressed(MouseEvent e) {
        //
        //startX = e.getX();
        //startY = e.getY();
        if ((currentTdp != null) && (currentTdp.jsp != null)) {
            //
            horizontal = currentTdp.jsp.getHorizontalScrollBar();
            vertical = currentTdp.jsp.getVerticalScrollBar();
            centerRectangle(e.getX(), e.getY());
            //valueH = horizontal.getValue();
            //valueV = vertical.getValue();
        } else {
            //
            horizontal = null;
            vertical = null;
        }
    }
    
    @Override
   public void mouseReleased(MouseEvent e) {
    }
    
    @Override
    public void mouseEntered(MouseEvent e) {
    }
    
    @Override
    public void mouseExited(MouseEvent e) {
    }
    
    @Override
    public void mouseClicked(MouseEvent e) {
    }
    
    @Override
    public void mouseMoved(MouseEvent e) {
    }
    
    @Override
    public void mouseDragged(MouseEvent e) {
        centerRectangle(e.getX(), e.getY());
    }
    
    public void startProcess() {
        setGo(true);
    }
    
    public void setGo(boolean b) {
        go = b;
        repaint();
    }
    
    public boolean getGo() {
        return go;
    }
}