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                 numberOfTracks = tracks.length;
  33                 setTracks(tracks);
  34         }
  35
  36         /**
  37          * Fills the track panel with track views for all tracks in the current sequence.
  38          * @param tracks        the tracks for which to add views
  39          */
  40         public void setTracks(Track[] tracks) {
  41                 if (tracks.length == 1) {
  42                         // If MIDI file is of type 0, creates a view for the track.
  43                         trackPanel.add(new MooTrackView(tracks[0]));
  44                         titlePanel.add(new MooTrackTitle(tracks[0]));
  45                 } else {
  46                         // Creates dialog for progress bar.
  47                         JDialog progressDialog = new JDialog(Moosique.getGUI(), "Visualizing...", false);
  48                         JProgressBar progressBar = new JProgressBar(0, tracks.length);
  49                         progressBar.setValue(0);
  50                         progressBar.setStringPainted(true);
  51                         progressDialog.getContentPane().add(progressBar);
  52                         progressDialog.pack();
  53                         progressDialog.setLocation((Toolkit.getDefaultToolkit().getScreenSize().width - progressDialog.getWidth()) / 2, (Toolkit.getDefaultToolkit().getScreenSize().height - progressDialog.getHeight()) / 2);
  54                         progressDialog.setVisible(true);
  55
  56                         // Starts filling the track panel with track views, while updating the progress bar.
  57                         trackPanel.removeAll();
  58                         trackPanel.setLayout(new GridLayout(1,tracks.length));
  59                         for (int i = 1; i < tracks.length; i++) {
  60                                 trackPanel.add(new MooTrackView(tracks[i]));
  61                                 titlePanel.add(new MooTrackTitle(tracks[i]));
  62                                 progressBar.setValue(i+1);
  63                         }
  64                         progressDialog.dispose();
  65                 }
  66                 trackPanel.validate();
  67                 setViewportView(trackPanel);
  68         }
  69
  70         /**
  71          * Calls on each track view to update itself.
  72          */
  73         public void update(long tickPosition) {
  74                 Component[] comps = getComponents();
  75                 for (int i = 0; i < comps.length; i++) {
  76                         if(comps[i] instanceof MooTrackView) ((MooTrackView)comps[i]).update(tickPosition);
  77                 }
  78         }
  79
  80         /**
  81          * Creates a view for the given track and adds it to the main view.
  82          * @param track         the track for which to add a view
  83          * @param index         the index at which to insert the view
  84          */
  85         public void addTrackView(Track track, int index) {
  86                 ((GridLayout)trackPanel.getLayout()).setColumns(++numberOfTracks);
  87                 ((GridLayout)titlePanel.getLayout()).setColumns(++numberOfTracks);
  88                 trackPanel.add(new MooTrackView(track), index);
  89                 titlePanel.add(new MooTrackTitle(track), index);
  90                 validate();
  91         }
  92
  93         /**
  94          * Removes the view for the given track.
  95          * @param index         the index of the track for which to remove the view
  96          */
  97         public void removeTrackView(int index) {
  98                 remove(index);
  99                 ((GridLayout)trackPanel.getLayout()).setColumns(--numberOfTracks);
 100                 validate();
 101         }
 102 }