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 MooViewCounter viewCounter;
  18         private int numberOfTracks;
  19
  20         /**
  21          * Creates the main view
  22          */
  23         public MooView(Track[] tracks) {
  24                 super(JScrollPane.VERTICAL_SCROLLBAR_ALWAYS, JScrollPane.HORIZONTAL_SCROLLBAR_AS_NEEDED);
  25                 trackPanel = new JPanel(new GridLayout(1,3), true);
  26                 setViewportView(trackPanel);
  27                 getViewport().setScrollMode(JViewport.BACKINGSTORE_SCROLL_MODE);
  28
  29                 titlePanel = new JPanel(new GridLayout(1,3),true);
  30                 JViewport columnHeader = new JViewport();
  31                 columnHeader.setView(titlePanel);
  32                 setColumnHeaderView(columnHeader);
  33
  34                 viewCounter = new MooViewCounter(null);
  35                 JViewport rowHeader = new JViewport();
  36                 rowHeader.setView(viewCounter);
  37                 setRowHeaderView(rowHeader);
  38
  39                 setTracks(tracks);
  40         }
  41
  42         /**
  43          * Fills the track panel with track views for all tracks in the current sequence.
  44          * @param tracks        the tracks for which to add views
  45          */
  46         public void setTracks(Track[] tracks) {
  47                 setDoubleBuffered(true);
  48                 numberOfTracks = tracks.length;
  49                 trackPanel.removeAll();
  50                 titlePanel.removeAll();
  51                 if (numberOfTracks == 1) {
  52                         // If MIDI file is of type 0, creates a view for the track.
  53                         trackPanel.setLayout(new FlowLayout());
  54                         MooTrackTitle title = new MooTrackTitle(tracks[0]);
  55                         titlePanel.add(title);
  56                         trackPanel.add(new MooTrackView(tracks[0], title));
  57                 } else {
  58                         // Creates dialog for progress bar.
  59                         JDialog progressDialog = new JDialog(Moosique.getGUI(), "Visualizing...", false);
  60                         JProgressBar progressBar = new JProgressBar(0, tracks.length);
  61                         progressBar.setValue(0);
  62                         progressBar.setStringPainted(true);
  63                         progressDialog.getContentPane().add(progressBar);
  64                         progressDialog.pack();
  65                         progressDialog.setLocation((Toolkit.getDefaultToolkit().getScreenSize().width - progressDialog.getWidth()) / 2, (Toolkit.getDefaultToolkit().getScreenSize().height - progressDialog.getHeight()) / 2);
  66                         progressDialog.setVisible(true);
  67
  68                         // Starts filling the track panel with track views, while updating the progress bar.
  69                         GridLayout gL = new GridLayout(1,numberOfTracks);
  70                         trackPanel.setLayout(gL);
  71                         for (int i = 1; i < tracks.length; i++) {
  72                                 if (Moosique.shouldBeDrawn(tracks[i])) {
  73                                         MooTrackTitle title = new MooTrackTitle(tracks[i]);
  74                                         titlePanel.add(title);
  75                                         trackPanel.add(new MooTrackView(tracks[i], title));
  76                                         progressBar.setValue(i);
  77                                 } else {
  78                                         gL.setColumns(--numberOfTracks);
  79                                         trackPanel.setLayout(gL);
  80                                 }
  81                         }
  82                         progressDialog.dispose();
  83                 }
  84 /*              JPanel filler = new JPanel();
  85                 int totalViewLength = trackPanel.getComponents().length * MooTrackView.VIEW_WIDTH;
  86                 if (totalViewLength < getWidth()) {
  87                         System.out.println("Adding filler since width = " + getWidth() + " and tracks = " + totalViewLength);
  88                         ((GridLayout)trackPanel.getLayout()).setColumns(numberOfTracks + 1);
  89                         filler.setPreferredSize(new Dimension(getWidth() - totalViewLength, 140 * MooTrackView.NOTE_HEIGHT));
  90                         trackPanel.add(filler);
  91                         setPreferredSize(new Dimension(getWidth(), getHeight()));
  92                 }
  93 */
  94                 trackPanel.validate();
  95                 setViewportView(trackPanel);
  96         }
  97
  98         /**
  99          * Calls on each track view to update itself.
 100          */
 101         public void update(long tickPosition) {
 102                 getViewport().setViewPosition(new Point((int)getViewport().getViewPosition().getX(), (int)(tickPosition / (Moosique.getSequence().getResolution() / 4)) * MooTrackView.NOTE_HEIGHT));
 103                 Component[] comps = getComponents();
 104                 for (int i = 0; i < comps.length; i++) {
 105                         if(comps[i] instanceof MooTrackView) ((MooTrackView)comps[i]).update(tickPosition);
 106                 }
 107         }
 108
 109         /**
 110          * Creates a view for the given track and adds it to the main view.
 111          * @param track         the track for which to add a view
 112          * @param index         the index at which to insert the view
 113          */
 114         public void addTrackView(Track track, int index) {
 115                 ((GridLayout)trackPanel.getLayout()).setColumns(++numberOfTracks);
 116                 ((GridLayout)titlePanel.getLayout()).setColumns(++numberOfTracks);
 117                 MooTrackTitle title = new MooTrackTitle(track);
 118                 titlePanel.add(title, index);
 119                 trackPanel.add(new MooTrackView(track, title), index);
 120                 validate();
 121         }
 122
 123         /**
 124          * Removes the view for the given track.
 125          * @param index         the index of the track for which to remove the view
 126          */
 127         public void removeTrackView(int index) {
 128                 remove(index);
 129                 ((GridLayout)trackPanel.getLayout()).setColumns(--numberOfTracks);
 130                 validate();
 131         }
 132 }