MooView.java

   1 import javax.sound.midi.*;
   2 import javax.swing.*;
   3 import java.awt.*;
   4 import java.awt.event.*;
   5 import java.beans.*;
   6
   7 /**
   8  * The main view, the container of the track views.
   9  *
  10  * @author  Einar Pehrson
  11  */
  12
  13 public class MooView extends JScrollPane {
  14
  15         private JPanel trackPanel;
  16         private JPanel titlePanel;
  17         private int numberOfTracks;
  18
  19         /**
  20          * Creates the main view
  21          */
  22         public MooView(Track[] tracks) {
  23                 super(JScrollPane.VERTICAL_SCROLLBAR_ALWAYS, JScrollPane.HORIZONTAL_SCROLLBAR_AS_NEEDED);
  24                 trackPanel = new JPanel(new GridLayout(1,3), true);
  25                 setViewportView(trackPanel);
  26
  27                 titlePanel = new JPanel(new GridLayout(1,3),true);
  28
  29                 JViewport columnHeader = new JViewport();
  30                 columnHeader.setView(titlePanel);
  31                 setColumnHeaderView(columnHeader);
  32                 setTracks(tracks);
  33         }
  34
  35         /**
  36          * Fills the track panel with track views for all tracks in the current sequence.
  37          * @param tracks        the tracks for which to add views
  38          */
  39         public void setTracks(Track[] tracks) {
  40                 numberOfTracks = tracks.length;
  41                 trackPanel.removeAll();
  42                 titlePanel.removeAll();
  43                 if (numberOfTracks == 1) {
  44                         // If MIDI file is of type 0, creates a view for the track.
  45                         trackPanel.setLayout(new FlowLayout());
  46                         trackPanel.add(new MooTrackView(tracks[0]));
  47                         titlePanel.add(new MooTrackTitle(tracks[0],0));
  48                 } else {
  49                         // Creates dialog for progress bar.
  50                         JDialog progressDialog = new JDialog(Moosique.getGUI(), "Visualizing...", false);
  51                         JProgressBar progressBar = new JProgressBar(0, tracks.length);
  52                         progressBar.setValue(0);
  53                         progressBar.setStringPainted(true);
  54                         progressDialog.getContentPane().add(progressBar);
  55                         progressDialog.pack();
  56                         progressDialog.setLocation((Toolkit.getDefaultToolkit().getScreenSize().width - progressDialog.getWidth()) / 2, (Toolkit.getDefaultToolkit().getScreenSize().height - progressDialog.getHeight()) / 2);
  57                         progressDialog.setVisible(true);
  58
  59                         // Starts filling the track panel with track views, while updating the progress bar.
  60                         trackPanel.setLayout(new GridLayout(1,numberOfTracks));
  61                         for (int i = 1; i < tracks.length; i++) {
  62                                 trackPanel.add(new MooTrackView(tracks[i]));
  63                                 titlePanel.add(new MooTrackTitle(tracks[i],i));
  64                                 progressBar.setValue(i+1);
  65                         }
  66                         progressDialog.dispose();
  67                 }
  68 /*              JPanel filler = new JPanel();
  69                 int totalViewLength = trackPanel.getComponents().length * MooTrackView.VIEW_WIDTH;
  70                 if (totalViewLength < getWidth()) {
  71                         System.out.println("Adding filler since width = " + getWidth() + " and tracks = " + totalViewLength);
  72                         ((GridLayout)trackPanel.getLayout()).setColumns(numberOfTracks + 1);
  73                         filler.setPreferredSize(new Dimension(getWidth() - totalViewLength, 140 * MooTrackView.NOTE_HEIGHT));
  74                         trackPanel.add(filler);
  75                         setPreferredSize(new Dimension(getWidth(), getHeight()));
  76                 }
  77 */
  78                 trackPanel.validate();
  79                 setViewportView(trackPanel);
  80         }
  81
  82         /**
  83          * Calls on each track view to update itself.
  84          */
  85         public void update(long tickPosition) {
  86                 getViewport().setViewPosition(new Point((int)getViewport().getViewPosition().getX(), (int)(tickPosition / 24) * MooTrackView.NOTE_HEIGHT));
  87                 Component[] comps = getComponents();
  88                 for (int i = 0; i < comps.length; i++) {
  89                         if(comps[i] instanceof MooTrackView) ((MooTrackView)comps[i]).update(tickPosition);
  90                 }
  91         }
  92
  93         /**
  94          * Creates a view for the given track and adds it to the main view.
  95          * @param track         the track for which to add a view
  96          * @param index         the index at which to insert the view
  97          */
  98         public void addTrackView(Track track, int index) {
  99                 ((GridLayout)trackPanel.getLayout()).setColumns(++numberOfTracks);
 100                 ((GridLayout)titlePanel.getLayout()).setColumns(++numberOfTracks);
 101                 trackPanel.add(new MooTrackView(track), index);
 102                 titlePanel.add(new MooTrackTitle(track,index), index);
 103                 validate();
 104         }
 105
 106         /**
 107          * Removes the view for the given track.
 108          * @param index         the index of the track for which to remove the view
 109          */
 110         public void removeTrackView(int index) {
 111                 remove(index);
 112                 ((GridLayout)trackPanel.getLayout()).setColumns(--numberOfTracks);
 113                 validate();
 114         }
 115 }