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                 numberOfTracks = tracks.length;
  33                 setTracks(tracks);
  34                 setLayout(new BorderLayout());
  35                 add(trackTitles, BorderLayout.NORTH);
  36                 add(trackViews, BorderLayout.CENTER);
  37         }
  38
  39         /**
  40          * Fills the track panel with track views for all tracks in the current sequence.
  41          * @param tracks        the tracks for which to add views
  42          */
  43         public void setTracks(Track[] tracks) {
  44                 if (tracks.length == 1) {
  45                         // If MIDI file is of type 0, creates a view for the track.
  46                         trackPanel.add(new MooTrackView(tracks[0]));
  47                         titlePanel.add(new MooTrackTitle(tracks[0]));
  48                 } else {
  49                         // Creates dialog for progress bar.
  50                         JDialog progressDialog = new JDialog(Moosique.getGUI(), "Visualizing MIDI file...", 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.removeAll();
  61                         trackPanel.setLayout(new GridLayout(1,tracks.length));
  62                         for (int i = 1; i < tracks.length; i++) {
  63                                 trackPanel.add(new MooTrackView(tracks[i]));
  64                                 titlePanel.add(new MooTrackTitle(tracks[i]));
  65                                 progressBar.setValue(i+1);
  66                         }
  67                         progressDialog.dispose();
  68                 }
  69                 trackPanel.validate();
  70         }
  71
  72         /**
  73          * Calls on each track view to update itself.
  74          */
  75         public void update() {
  76                 Component[] comps = getComponents();
  77                 for (int i = 0; i < comps.length; i++) {
  78                         if(comps[i] instanceof MooTrackView) ((MooTrackView)comps[i]).update();
  79                 }
  80         }
  81
  82         /**
  83          * Creates a view for the given track and adds it to the main view.
  84          * @param track         the track for which to add a view
  85          * @param index         the index at which to insert the view
  86          */
  87         public void addTrackView(Track track, int index) {
  88                 ((GridLayout)trackPanel.getLayout()).setColumns(++numberOfTracks);
  89                 ((GridLayout)titlePanel.getLayout()).setColumns(++numberOfTracks);
  90                 trackPanel.add(new MooTrackView(track), index);
  91                 titlePanel.add(new MooTrackTitle(track), index);
  92                 validate();
  93         }
  94
  95         /**
  96          * Removes the view for the given track.
  97          * @param index         the index of the track for which to remove the view
  98          */
  99         public void removeTrackView(int index) {
 100                 remove(index);
 101                 ((GridLayout)trackPanel.getLayout()).setColumns(--numberOfTracks);
 102                 validate();
 103         }
 104 }