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 JPanel {
  14
  15         private JPanel trackPanel;
  16         private JPanel titlePanel;
  17         private int numberOfTracks;
  18         private JScrollPane trackViews;
  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                 titlePanel = new JPanel(new GridLayout(1,3),true);
  29
  30                 JViewport columnHeader = new JViewport();
  31                 columnHeader.setView(titlePanel);
  32                 trackViews.setColumnHeaderView(columnHeader);
  33                 numberOfTracks = tracks.length;
  34                 setTracks(tracks);
  35                 setLayout(new BorderLayout());
  36                 add(trackViews, BorderLayout.CENTER);
  37
  38                 trackViews.addPropertyChangeListener(new PropertyChangeListener(){
  39                                 public void propertyChange(PropertyChangeEvent e){
  40                                         System.out.println(e.getSource());
  41                                 }});
  42         }
  43
  44         /**
  45          * Fills the track panel with track views for all tracks in the current sequence.
  46          * @param tracks        the tracks for which to add views
  47          */
  48         public void setTracks(Track[] tracks) {
  49                 if (tracks.length == 1) {
  50                         // If MIDI file is of type 0, creates a view for the track.
  51                         trackPanel.add(new MooTrackView(tracks[0]));
  52                         titlePanel.add(new MooTrackTitle(tracks[0]));
  53                 } else {
  54                         // Creates dialog for progress bar.
  55                         JDialog progressDialog = new JDialog(Moosique.getGUI(), "Visualizing...", false);
  56                         JProgressBar progressBar = new JProgressBar(0, tracks.length);
  57                         progressBar.setValue(0);
  58                         progressBar.setStringPainted(true);
  59                         progressDialog.getContentPane().add(progressBar);
  60                         progressDialog.pack();
  61                         progressDialog.setLocation((Toolkit.getDefaultToolkit().getScreenSize().width - progressDialog.getWidth()) / 2, (Toolkit.getDefaultToolkit().getScreenSize().height - progressDialog.getHeight()) / 2);
  62                         progressDialog.setVisible(true);
  63
  64                         // Starts filling the track panel with track views, while updating the progress bar.
  65                         trackPanel.removeAll();
  66                         trackPanel.setLayout(new GridLayout(1,tracks.length));
  67                         for (int i = 1; i < tracks.length; i++) {
  68                                 trackPanel.add(new MooTrackView(tracks[i]));
  69                                 titlePanel.add(new MooTrackTitle(tracks[i]));
  70                                 progressBar.setValue(i+1);
  71                         }
  72                         progressDialog.dispose();
  73                 }
  74                 trackPanel.validate();
  75                 trackViews.setViewportView(trackPanel);
  76         }
  77
  78         /**
  79          * Calls on each track view to update itself.
  80          */
  81         public void update(long tickPosition) {
  82                 Component[] comps = getComponents();
  83                 for (int i = 0; i < comps.length; i++) {
  84                         if(comps[i] instanceof MooTrackView) ((MooTrackView)comps[i]).update(tickPosition);
  85                 }
  86         }
  87
  88         /**
  89          * Creates a view for the given track and adds it to the main view.
  90          * @param track         the track for which to add a view
  91          * @param index         the index at which to insert the view
  92          */
  93         public void addTrackView(Track track, int index) {
  94                 ((GridLayout)trackPanel.getLayout()).setColumns(++numberOfTracks);
  95                 ((GridLayout)titlePanel.getLayout()).setColumns(++numberOfTracks);
  96                 trackPanel.add(new MooTrackView(track), index);
  97                 titlePanel.add(new MooTrackTitle(track), index);
  98                 validate();
  99         }
 100
 101         /**
 102          * Removes the view for the given track.
 103          * @param index         the index of the track for which to remove the view
 104          */
 105         public void removeTrackView(int index) {
 106                 remove(index);
 107                 ((GridLayout)trackPanel.getLayout()).setColumns(--numberOfTracks);
 108                 validate();
 109         }
 110 }