MooTrackView.java

   1 import javax.swing.*;
   2 import java.awt.*;
   3 import java.awt.event.*;
   4 import javax.sound.midi.*;
   5
   6 /**
   7  * Graphical representation of a MIDI track.
   8  *
   9  * @author  Andersson , Andreen, Lanneskog, Pehrson
  10  * @version 1
  11  */
  12
  13 public class MooTrackView extends JPanel implements ActionListener {
  14
  15         private Track track;
  16         private MooTrackTitle title;
  17         private NoteArea notes;
  18         private Rectangle box;
  19         private JPopupMenu popup;
  20         private JMenuItem menuItem;
  21
  22         public MooTrackView (Track track) {
  23                 this.track = track;
  24                 setPreferredSize(new Dimension(200, 200));
  25                 setLayout(new BorderLayout());
  26                 this.setBorder(BorderFactory.createLineBorder(Color.black));
  27
  28                 title = new MooTrackTitle(track);
  29                 title.setBorder(BorderFactory.createLineBorder(Color.black));
  30                 add(title, BorderLayout.NORTH);
  31
  32                 notes = new NoteArea(track);
  33                 notes.setBackground(Color.white);
  34                 notes.setBorder(BorderFactory.createLineBorder(Color.black));
  35
  36                 popup = new JPopupMenu();
  37                 menuItem = new JMenuItem("Add...");
  38                 menuItem.addActionListener(this);
  39                 popup.add(menuItem);
  40                 menuItem = new JMenuItem("Preferences...");
  41                 menuItem.addActionListener(this);
  42                 popup.add(menuItem);
  43
  44                 notes.addMouseListener(new PopupListener());
  45                 add(notes, BorderLayout.CENTER);
  46         }
  47
  48         public void actionPerformed(ActionEvent e) {}
  49
  50         public Track getTrack() {
  51                 return track;
  52         }
  53
  54
  55         /**
  56          * Updates the track view.
  57          */
  58         public void update() {
  59
  60         }
  61
  62         class NoteArea extends JPanel {
  63
  64                 public static final int NOTE_SIZE = 20;
  65
  66                 public NoteArea(Track track) {
  67                         MidiEvent note;
  68                         MooNoteElement elem;
  69                         boolean isOccupied;
  70                         int x, y, height;
  71                         Insets insets = getInsets();
  72                         for (int i = 0; i < track.size(); i++) {
  73                                 note = track.get(i);
  74                                 if (note instanceof MooNote) {
  75                                         MooNote mn = (MooNote)note;
  76                                         elem = new MooNoteElement(mn);
  77                                         add(elem);
  78                                         x = insets.left;
  79                                         y = insets.top + (int)(mn.getTick() / 24) * NOTE_SIZE;
  80                                         height = (mn.getDuration() / 24) * NOTE_SIZE;
  81                                         while(findComponentAt(x, y) != this || findComponentAt(x, y + height - 1) != this) x += NOTE_SIZE;
  82                                         elem.setBounds(x, y, NOTE_SIZE, height);
  83                                 }
  84                         }
  85                 }
  86
  87                 public void paintComponent(Graphics g) {
  88                         super.paintComponent(g);
  89                         Graphics2D g2 = (Graphics2D)g;
  90                         for (int c = 0; c < 1000; c += 20) {
  91                                 for (int r = 0; r < 200; r += 20) {
  92                                         box = new Rectangle(r, c, 20, 20);
  93                                         g2.setColor(Color.gray);
  94                                         g2.draw(box);
  95                                 }
  96                         }
  97                 }
  98         }
  99
 100         class PopupListener extends MouseAdapter {
 101                 public void mousePressed(MouseEvent e) {
 102                         maybeShowPopup(e);
 103                 }
 104
 105                 public void mouseReleased(MouseEvent e) {
 106                         maybeShowPopup(e);
 107                 }
 108
 109                 private void maybeShowPopup(MouseEvent e) {
 110                         if (e.isPopupTrigger()) {
 111                                 popup.show(e.getComponent(), e.getX(), e.getY());
 112                         }
 113                 }
 114         }
 115 }