/*
    * associated an image with many clickable zones. Each zone is associated to a JPAnel 
    * witch appears when a zone (Shape) is mouseclicked
    */
   package org.lsst.ccs.utilities.zonesui;
   
   import org.lsst.ccs.utilities.tracers.Tracer;
   
   import javax.swing.ImageIcon;
  import javax.swing.JOptionPane;
  import javax.swing.JPanel;
  import javax.swing.SwingUtilities;
  import java.awt.BasicStroke;
  import java.awt.Color;
  import java.awt.Dimension;
  import java.awt.Graphics;
  import java.awt.Graphics2D;
  import java.awt.Image;
  import java.awt.Point;
  import java.awt.RenderingHints;
  import java.awt.Stroke;
  import java.awt.event.MouseEvent;
  import java.awt.event.MouseListener;
  import java.awt.event.MouseMotionListener;
  import java.util.List;
  
  /**
   *
   * @author Pascal Durieu
   */
  public class ImageZones extends JPanel implements MouseListener, MouseMotionListener {
  
      //Map whith the Shapes define the clickables zones (key)
      private List<Zone> tableShape;
      
      //description of the image & clickable zones
      private ImageDescription description;
      private ImageIcon icon;
      private Image img;
      private Dimension dim;
      private Stroke stroke = new BasicStroke(3.0f, BasicStroke.CAP_BUTT, BasicStroke.JOIN_MITER, 5.0f, new float[] {5.0f}, 0.0f);
      private Color color = Color.BLACK ;
  
      //associating the key (clickable zones) with a JPanel
      private InteractionProducer interaction;
      private PositionListener posListener ;
  
      //display mousecoords
      private String message = "";
      int messageX = 0, messageY = 0; 
         
      public ImageZones(ImageDescription id, InteractionProducer ip, PositionListener posListener) {
          this.description = id;
          this.interaction = ip;
          this.posListener = posListener ;
          
          icon = id.getIcon();
          tableShape = id.getShapeDescription();
          img = icon.getImage();
          dim = new Dimension(icon.getIconWidth(),icon.getIconHeight());        
  
          addMouseListener(this);
          addMouseMotionListener(this);
      }
      @Override
      public Dimension getMinimumSize() {
          Dimension dim2 = new Dimension(icon.getIconWidth()/2,icon.getIconHeight()/2);
          return dim2;
      }
      @Override
      public Dimension getMaximumSize() {return dim;}
      @Override
      public Dimension getPreferredSize() {return dim;}
  
      public Stroke getStroke() {
          return stroke;
      }
  
      public void setStroke(Stroke stroke) {
          this.stroke = stroke;
      }
  
      public void setDashedLineWidth(int points){
          float width = (float) points ;
          this.setStroke( new BasicStroke(width, BasicStroke.CAP_BUTT, BasicStroke.JOIN_MITER, 5.0f, new float[] {5.0f}, 0.0f));
      }
  
      public Color getDashedLineColor() {
          return color;
      }
  
      public void setDashedLineColor(Color color) {
          this.color = color;
      }
  
      //drawing the image and clickable zones
      @Override
      public void paintComponent(Graphics g) {
          Graphics2D g2 = (Graphics2D)g;
         super.paintComponent(g2);
         g2.setRenderingHint(RenderingHints.KEY_INTERPOLATION, RenderingHints.VALUE_INTERPOLATION_BILINEAR);
         
         //drawn image
         g2.drawImage(img, 0, 0, img.getWidth(this), img.getHeight(this), this);
         
         //drawn the clickable zones
         g2.setColor(getDashedLineColor());
         g2.setStroke(getStroke());
         for(Zone zone: tableShape) {
             g2.draw(zone.getShape());
         }
 
         //TODO: get this out and put it in a different JLAbel
         //simple mouse coords
         g2.setColor(Color.BLACK);
         messageY = g2.getFont().getSize();
         g2.drawString(message, messageX, messageY); 
     }
 
     //when clicked on a shape identified as a clickable zone,
     //a JDialog is loading, displayed a JPanel
     @Override
     public void mouseClicked(MouseEvent e) {
         Point pt = e.getPoint();
         for(Zone zone : tableShape) {
             if (zone.getShape().contains(pt)) {
                 String key = zone.getKey();
                 JPanel jpan = interaction.getInteraction(key);
                 if (jpan != null) {
                     ClickDialog cd = new ClickDialog(SwingUtilities.windowForComponent(this),key, false, jpan);   
                     //System.out.println(interaction.getInteraction(key).toString()+" [key = "+key+"]");
                     assert Tracer.trace(interaction.getInteraction(key).toString() + " [key = " + key + "]");
                     cd.setLocation(e.getXOnScreen(), e.getYOnScreen());  
                 }
                 else {
                     JOptionPane.showMessageDialog(SwingUtilities.windowForComponent(this),
                         "JPanel not found for the key \""+key+"\"",
                          "JPanel error",
                          JOptionPane.ERROR_MESSAGE);
                 }
                 break;
             }
         }
     }
     
     @Override
     public void mouseMoved(MouseEvent me) {
         Point pt = me.getPoint();
         String tooltipText="" ;
         for(Zone zone : tableShape) {
             if (zone.getShape().contains(pt)) {
                 tooltipText = zone.getTipText();
                 break ;
             }
         }
         this.setToolTipText(tooltipText);
         //: put message in a different JLabel : do not call repaint!
         if(posListener != null) {
             posListener.currentCoords(me.getX(), me.getY());
         }
         //message= "("+me.getX()+", "+me.getY()+")";
         // repaint();
     }
    
     @Override
     public void mousePressed(MouseEvent e) {}
     @Override
     public void mouseReleased(MouseEvent e) {}
     @Override
     public void mouseEntered(MouseEvent me) {}
     @Override
     public void mouseExited(MouseEvent me) {}
     @Override
     public void mouseDragged(MouseEvent me) {}
 
 }