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
  23         public MooTrackView (Track track) {
  24                 this.track = track;
  25                 setPreferredSize(new Dimension(200, 200));
  26                 setLayout(new BorderLayout());
  27                 this.setBorder(BorderFactory.createLineBorder(Color.black));
  28
  29                 title = new MooTrackTitle(track);
  30                 title.setBorder(BorderFactory.createLineBorder(Color.black));
  31                 add(title, BorderLayout.NORTH);
  32
  33                 notes = new NoteArea(track);
  34                 notes.setBackground(Color.white);
  35                 notes.setBorder(BorderFactory.createLineBorder(Color.black));
  36
  37                 popup = new JPopupMenu();
  38                 menuItem = new JMenuItem("Add...");
  39                 menuItem.addActionListener(this);
  40                 popup.add(menuItem);
  41                 menuItem = new JMenuItem("Preferences...");
  42                 menuItem.addActionListener(this);
  43                 popup.add(menuItem);
  44
  45                 notes.addMouseListener(new PopupListener());
  46                 add(notes, BorderLayout.CENTER);
  47         }
  48
  49         public void actionPerformed(ActionEvent e) {}
  50
  51         public Track getTrack() {
  52                 return track;
  53         }
  54
  55
  56         /**
  57          * Updates the track view.
  58          */
  59         public void update() {
  60
  61         }
  62
  63         class NoteArea extends JPanel {
  64                 public static final int NOTE_SIZE = 25;
  65                 private int trackLength;
  66
  67                 public NoteArea(Track track) {
  68                         setLayout(null);
  69                         trackLength = 60;
  70                         MidiEvent note;
  71                         MooNoteElement elem;
  72                         boolean isOccupied;
  73                         int x, y, height;
  74                         Insets insets = getInsets();
  75                         for (int i = 0; i < track.size(); i++) {
  76                                 note = track.get(i);
  77                                 if (note instanceof MooNote) {
  78                                         // Adds the note element to the note area.
  79                                         MooNote mn = (MooNote)note;
  80                                         elem = new MooNoteElement(mn);
  81                                         add(elem);
  82
  83                                         // Places the note element in the appropriate place.
  84                                         x = insets.left;
  85                                         y = insets.top + (int)(mn.getTick() / 24) * NOTE_SIZE;
  86                                         height = NOTE_SIZE;
  87                                         // height = (mn.getDuration() / 24) * NOTE_SIZE;
  88                                         System.out.println("Comp at: " + x + ", " + y + " is: " + findComponentAt(x + 10, y + 10));
  89                                         while(findComponentAt(x, y) instanceof MooNoteElement ||
  90                                               findComponentAt(x, y + height - 1) instanceof MooNoteElement) x += NOTE_SIZE;
  91                                         elem.setBounds(x, y, NOTE_SIZE, height);
  92                                 }
  93                         }
  94                 }
  95
  96                 public void paintComponent(Graphics g) {
  97                         super.paintComponent(g);
  98                         Graphics2D g2 = (Graphics2D)g;
  99                         for (int c = 0; c < (trackLength*NOTE_SIZE); c += NOTE_SIZE) {
 100                                 for (int r = 0; r < (10*NOTE_SIZE); r += NOTE_SIZE) {
 101                                         box = new Rectangle(r, c, NOTE_SIZE, NOTE_SIZE);
 102                                         g2.setColor(Color.gray);
 103                                         g2.draw(box);
 104                                 }
 105                         }
 106                 }
 107         }
 108
 109         class PopupListener extends MouseAdapter {
 110                 public void mousePressed(MouseEvent e) {
 111                         maybeShowPopup(e);
 112                 }
 113
 114                 public void mouseReleased(MouseEvent e) {
 115                         maybeShowPopup(e);
 116                 }
 117
 118                 private void maybeShowPopup(MouseEvent e) {
 119                         if (e.isPopupTrigger()) {
 120                                 popup.show(e.getComponent(), e.getX(), e.getY());
 121                         }
 122                 }
 123         }
 124 }