package jalview.gui;

import jalview.jbgui.GAlignmentPanel;
import java.awt.*;
import java.awt.image.*;
import java.awt.event.*;
import java.awt.print.*;
import javax.swing.*;

public class AlignmentPanel extends GAlignmentPanel implements AdjustmentListener, Printable
{

  AlignViewport     av;
  OverviewPanel overviewPanel;
  SeqPanel   seqPanel;
  IdPanel    idPanel;
  public AlignFrame alignFrame;
  ScalePanel scalePanel;
  ScorePanel scorePanel;

  public boolean    groupEdit = false;

  public AlignmentPanel(AlignFrame af, AlignViewport av)
  {
    alignFrame = af;
    this.av         = av;
    seqPanel        = new SeqPanel  (av, this);
    idPanel         = new IdPanel   (av, this);
    scalePanel = new ScalePanel(av);
    scorePanel = new ScorePanel(av);

    idPanelHolder.add(idPanel, BorderLayout.CENTER);
    idPanel.addNotify();
    scalePanelHolder.add(scalePanel, BorderLayout.CENTER);
    scorePanelHolder.add(scorePanel, BorderLayout.CENTER);
    seqPanelHolder.add(seqPanel, BorderLayout.CENTER);
    setScrollValues(0,0);

    hscroll.addAdjustmentListener(this);
    vscroll.addAdjustmentListener(this);
    selectAll(false);

    addComponentListener(new ComponentAdapter()
   {
       public void componentResized(ComponentEvent evt)
     {
          RefreshPanels();
     }
   });

  }

  public int countSelected()
  {
    return av.getSelection().size();
  }

  public void selectAll(boolean flag) {
    int i = 0;
    if (flag) {
      while (i < av.getAlignment().getHeight()) {
        if (! av.getSelection().contains(av.getAlignment().getSequenceAt(i))) {
          av.getSelection().addElement(av.getAlignment().getSequenceAt(i));
        }
        i++;
      }
    } else {
      av.getSelection().clear();
    }
  }

 public OverviewPanel getOverviewPanel()
 {
   return overviewPanel;
 }

 public void setOverviewPanel(OverviewPanel op)
 {
   overviewPanel = op;
 }


  public void setGraphPanelVisible(boolean b)
  {
    scorePanelHolder.setVisible(b);
    idSpaceFillerPanel.setVisible(b);
    RefreshPanels();
  }

  public void setWrapAlignment(boolean wrap)
  {

      scalePanelHolder.setVisible(!wrap);
      scorePanelHolder.setVisible(!wrap);

      hscroll.setVisible(!wrap);
      idSpaceFillerPanel.setVisible(!wrap);
      idSpaceFillerPanel1.setVisible(!wrap);

  }


  public void setColourScheme(jalview.schemes.ColourSchemeI cs, boolean conservation)
  {
    seqPanel.setColourScheme(cs, conservation);
    if(overviewPanel!=null)
      overviewPanel.updateOverviewImage();
  }


  public void RefreshPanels()
  {
    invalidate();
    validate();
    idPanel.idCanvas.paintFlag = true;
    idPanelHolder.setPreferredSize( idPanel.idCanvas.getPreferredSize() );
    seqPanel.seqCanvas.paintFlag = true;
    setScrollValues(av.getStartRes(), av.getStartSeq());
    av.getConsensus(true);
    repaint();

    if(overviewPanel!=null)
      overviewPanel.updateOverviewImage();

  }

  int hextent = 0;
  int vextent = 0;

  public void setScrollValues(int x, int y)
  {
    hextent = (int)(seqPanel.seqCanvas.getWidth()/av.getCharWidth());
    vextent = seqPanel.seqCanvas.getHeight()/av.getCharHeight();

    if(hextent+x  >  av.getAlignment().getWidth())
      x =  av.getAlignment().getWidth()- hextent;

    if(vextent+y > av.getAlignment().getHeight())
      y = av.getAlignment().getHeight() - vextent;

    if(y<0)
      y = 0;

    if(x<0)
      x=0;

    hscroll.setValues(x,hextent,0,av.getAlignment().getWidth());
    vscroll.setValues(y,vextent,0,av.getAlignment().getHeight() );
    seqPanel.seqCanvas.paintFlag = true;
    repaint();

  }


  public void adjustmentValueChanged(AdjustmentEvent evt)
  {

    if (evt.getSource() == hscroll)
    {
      int x = hscroll.getValue();
      av.setStartRes(x);
      av.setEndRes(x + (int)(seqPanel.seqCanvas.getWidth()/av.getCharWidth()-1));
    }

    if (evt.getSource() == vscroll)
    {
        int offy = vscroll.getValue();
        av.setStartSeq(offy);
        av.setEndSeq(offy + seqPanel.seqCanvas.getHeight()/av.getCharHeight());
    }


    if(overviewPanel!=null)
      overviewPanel.setBoxPosition();


    repaint();
  }


  public int print(Graphics g, PageFormat pf, int pi) throws PrinterException
  {

    int pwidth = (int)pf.getImageableWidth();
    int pheight = (int)pf.getImageableHeight();
    int idWidth = (int)idPanel.idCanvas.getLabelWidth().getWidth();

    BufferedImage printImage = new BufferedImage(pwidth,pheight,BufferedImage.TYPE_INT_RGB);
    Graphics pg = printImage.getGraphics();
    pg.setColor(Color.white);
    pg.fillRect(0,0,pwidth, pheight);
    pg.setFont( av.getFont() );

    ////////////////////////////////////
    /// How many sequences and residues can we fit on a printable page?
    int totalRes = (int)((pwidth - idWidth)/av.getCharWidth());
    int totalSeq = (int)((pheight - 30)/av.getCharHeight())-1;
    int pagesWide = av.getAlignment().getWidth() / totalRes +1;
    int pagesHigh = av.getAlignment().getHeight() / totalSeq +1;

    if (pi >= pagesWide*pagesHigh)
     return Printable.NO_SUCH_PAGE;

    /////////////////////////////
    /// Only print these sequences and residues on this page
    int startRes, endRes, startSeq, endSeq;
    startRes = (pi % pagesWide) * totalRes;
    endRes = startRes + totalRes-1;
    if(endRes>av.getAlignment().getWidth())
      endRes = av.getAlignment().getWidth();

     startSeq = (pi / pagesWide) * totalSeq;
     endSeq = startSeq + totalSeq;
     if(endSeq > av.getAlignment().getHeight())
       endSeq = av.getAlignment().getHeight();


    ////////////////
    //draw Scale
    pg.translate(idWidth,0);
    scalePanel.scaleCanvas.drawScale(pg, startRes, endRes, pwidth-idWidth);

    pg.translate(-idWidth, 30);
    ////////////////
    // Draw the ids
    Color currentColor=null;
    Color currentTextColor=null;
    for(int i=startSeq; i<endSeq; i++)
    {
      if (av.getSelection().contains(av.getAlignment().getSequenceAt(i)))
      {
        currentColor = Color.gray;
        currentTextColor = Color.black;
      }
      else
      {
        currentColor = av.getAlignment().getSequenceAt(i).getColor();
        currentTextColor = Color.black;
      }

      pg.setColor(currentColor);
      pg.fillRect(0,  jalview.analysis.AlignmentUtil.getPixelHeight(startSeq, i, av.getCharHeight()),
                              getWidth(),
                              av.getCharHeight());

      pg.setColor(currentTextColor);

      String string = av.getAlignment().getSequenceAt(i).getDisplayId();
      pg.drawString(string, 0,  jalview.analysis.AlignmentUtil.getPixelHeight
                    (startSeq, i, av.getCharHeight()) + av.getCharHeight() - (av.getCharHeight() / 5));
    }

    // draw main sequence panel
    pg.translate(idWidth,0);
    seqPanel.seqCanvas.drawPanel(pg,startRes,endRes,startSeq,endSeq,startRes,startSeq,0);


    g.drawImage( printImage, (int)pf.getImageableX (), (int)pf.getImageableY(), this);

   /* JFrame frame = new JFrame("preview");
    javax.swing.JPanel p = new preview(printImage);
    frame.getContentPane().setLayout(new BorderLayout());
    frame.getContentPane().add(p, java.awt.BorderLayout.CENTER);
    frame.setVisible(true);
    frame.setSize(pwidth, pheight);

    frame.validate();*/

    return Printable.PAGE_EXISTS;
  }
}

class preview extends javax.swing.JPanel
{
  Image i=null;
  public preview(Image image)
  {
    i = image;
  }

  public void paint(Graphics g)
  {
    if(g!=null)
      g.drawImage(i, 0,0,null);
  }
}