package jalview.gui;

import jalview.datamodel.*;
import java.awt.*;
import java.awt.event.*;
import javax.swing.*;

public class ScalePanel extends JPanel
{

  protected ScaleCanvas scaleCanvas;

  protected int offy;
  public    int width;

  protected AlignViewport av;
  AlignmentPanel ap;

  public ScalePanel(AlignViewport av, AlignmentPanel ap)
  {
    this.av         = av;
    this.ap = ap;

    scaleCanvas = new ScaleCanvas(av);
    setLayout(new BorderLayout());
    add(scaleCanvas, BorderLayout.CENTER);
    addMouseListener(new MouseAdapter()
    {
      public void mousePressed(MouseEvent evt)
      {
        doMousePressed(evt);
      }
      public void mouseReleased(MouseEvent evt)
      {
        doMouseReleased(evt);
      }

    });
    addMouseMotionListener(new MouseMotionAdapter()
    {
      public void mouseDragged(MouseEvent evt)
      {
        doMouseDragged(evt);
      }
    });

  }

  public Dimension getMinimumSize() {
    return scaleCanvas.getMinimumSize();
  }

  public Dimension getPreferredSize() {
    return scaleCanvas.getPreferredSize();
  }

  public void doMousePressed(MouseEvent evt) {
    int x = evt.getX();
    int res = x/av.getCharWidth() + av.getStartRes();

    if (! av.getColumnSelection().contains(res))
      av.getColumnSelection().addElement(res);
    else
      return;

    SequenceGroup sg = new SequenceGroup();
    for(int i=0; i<av.alignment.getSequences().size(); i++)
        sg.addSequence(av.alignment.getSequenceAt(i));

    sg.setStartRes(res);
    sg.setEndRes(res);
    av.setRubberbandGroup(sg);
    ap.RefreshPanels();
  }

  public void doMouseReleased(MouseEvent evt)
  {
    int x = evt.getX();
    int res = x/av.getCharWidth() + av.getStartRes();

   if (! av.getColumnSelection().contains(res))
     av.getColumnSelection().addElement(res);

   SequenceGroup sg = av.getRubberbandGroup();

   if(res>sg.getStartRes())
     sg.setEndRes(res);
   else if(res<sg.getStartRes())
     sg.setStartRes(res);

   ap.RefreshPanels();
  }

  public void doMouseDragged(MouseEvent evt)
  {
    int x = evt.getX();
    int res = x/av.getCharWidth() + av.getStartRes();

    SequenceGroup sg = av.getRubberbandGroup();

    if(res>sg.getStartRes())
      sg.setEndRes(res);
    else if(res<sg.getStartRes())
      sg.setStartRes(res);


    ap.RefreshPanels();

  }
}