MooView.java

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