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 JDialog progressDialog;
  19         private JProgressBar progressBar;
  20         private int numberOfTracks;
  21
  22         /**
  23          * Creates the main view
  24          */
  25         public MooView(Track[] tracks) {
  26                 super(JScrollPane.VERTICAL_SCROLLBAR_ALWAYS, JScrollPane.HORIZONTAL_SCROLLBAR_AS_NEEDED);
  27
  28                 // Configures scroll pane viewport (track views).
  29                 trackPanel = new JPanel(new GridLayout(1,3), true);
  30                 setViewportView(trackPanel);
  31                 getViewport().setScrollMode(JViewport.BACKINGSTORE_SCROLL_MODE);
  32
  33                 // Configures viewport column header (track titles).
  34                 titlePanel = new JPanel(new GridLayout(1,3),true);
  35                 JViewport columnHeader = new JViewport();
  36                 columnHeader.setView(titlePanel);
  37                 setColumnHeaderView(columnHeader);
  38
  39                 // Configures viewport row header (view counter).
  40                 viewCounter = new MooViewCounter(null);
  41                 JViewport rowHeader = new JViewport();
  42                 rowHeader.setView(viewCounter);
  43                 setRowHeaderView(rowHeader);
  44
  45                 // Updates the view with the given tracks.
  46                 setTracks(tracks, false);
  47         }
  48
  49         /**
  50          * Fills the track panel with track views for all tracks in the current sequence.
  51          * @param tracks        the tracks for which to add views
  52          */
  53         public void setTracks(Track[] tracks, boolean showProgress) {
  54                 setDoubleBuffered(true);
  55                 numberOfTracks = tracks.length;
  56                 trackPanel.removeAll();
  57                 titlePanel.removeAll();
  58                 if (numberOfTracks == 1) {
  59                         // If MIDI file is of type 0, creates a view for the track.
  60                         trackPanel.setLayout(new FlowLayout());
  61                         MooTrackTitle title = new MooTrackTitle(tracks[0]);
  62                         titlePanel.add(title);
  63                         trackPanel.add(new MooTrackView(tracks[0], title));
  64                 } else {
  65                         if (showProgress) {
  66                                 // Creates dialog for progress bar.
  67                                 progressDialog = new JDialog(Moosique.getGUI(), "Visualizing...", false);
  68                                 int tracksToDraw = 0;
  69                                 for (int i = 0; i < tracks.length; i++) {
  70                                         if (Moosique.shouldBeDrawn(tracks[i])) tracksToDraw++;
  71                                 }
  72                                 progressBar = new JProgressBar(0, tracksToDraw);
  73                                 progressBar.setValue(0);
  74                                 progressBar.setStringPainted(true);
  75                                 progressDialog.getContentPane().add(progressBar);
  76                                 progressDialog.pack();
  77                                 progressDialog.setLocation((Toolkit.getDefaultToolkit().getScreenSize().width - progressDialog.getWidth()) / 2, (Toolkit.getDefaultToolkit().getScreenSize().height - progressDialog.getHeight()) / 2);
  78                                 progressDialog.setVisible(true);
  79                         }
  80
  81                         // Starts filling the track panel with track views, while updating the progress bar.
  82                         GridLayout gL = new GridLayout(1,numberOfTracks);
  83                         trackPanel.setLayout(gL);
  84                         for (int i = 1; i < tracks.length; i++) {
  85                                 if (Moosique.shouldBeDrawn(tracks[i])) {
  86                                         MooTrackTitle title = new MooTrackTitle(tracks[i]);
  87                                         titlePanel.add(title);
  88                                         trackPanel.add(new MooTrackView(tracks[i], title));
  89                                         if (showProgress) progressBar.setValue(i);
  90                                         else System.out.print(".");
  91                                 } else {
  92                                         gL.setColumns(--numberOfTracks);
  93                                         trackPanel.setLayout(gL);
  94                                 }
  95                         }
  96                         if (showProgress) progressDialog.dispose();
  97                 }
  98 /*              JPanel filler = new JPanel();
  99                 int totalViewLength = trackPanel.getComponents().length * MooTrackView.VIEW_WIDTH;
 100                 if (totalViewLength < getWidth()) {
 101                         System.out.println("Adding filler since width = " + getWidth() + " and tracks = " + totalViewLength);
 102                         ((GridLayout)trackPanel.getLayout()).setColumns(numberOfTracks + 1);
 103                         filler.setPreferredSize(new Dimension(getWidth() - totalViewLength, 140 * MooTrackView.NOTE_HEIGHT));
 104                         trackPanel.add(filler);
 105                         setPreferredSize(new Dimension(getWidth(), getHeight()));
 106                 }
 107 */
 108                 trackPanel.validate();
 109                 setViewportView(trackPanel);
 110         }
 111
 112         /**
 113          * Calls on each track view to update itself.
 114          */
 115         public void update(long tickPosition) {
 116                 getViewport().setViewPosition(new Point((int)getViewport().getViewPosition().getX(), (int)(tickPosition / (Moosique.getSequence().getResolution() / 4)) * MooTrackView.NOTE_HEIGHT));
 117         }
 118
 119         /**
 120          * Creates a view for the given track and adds it to the main view.
 121          * @param track         the track for which to add a view
 122          * @param index         the index at which to insert the view
 123          */
 124         public void addTrackView(Track track, int index) {
 125                 ((GridLayout)trackPanel.getLayout()).setColumns(++numberOfTracks);
 126                 ((GridLayout)titlePanel.getLayout()).setColumns(++numberOfTracks);
 127                 MooTrackTitle title = new MooTrackTitle(track);
 128                 titlePanel.add(title, index);
 129                 trackPanel.add(new MooTrackView(track, title), index);
 130                 validate();
 131         }
 132
 133         /**
 134          * Removes the view for the given track.
 135          * @param index         the index of the track for which to remove the view
 136          */
 137         public void removeTrackView(int index) {
 138                 remove(index);
 139                 ((GridLayout)trackPanel.getLayout()).setColumns(--numberOfTracks);
 140                 validate();
 141         }
 142 }