3 import java.awt.event.*;
4 import javax.sound.midi.*;
8 * Graphical representation of a MIDI track.
10 * @author Andersson , Andreen, Lanneskog, Pehrson
14 public class MooTrackView extends JPanel {
17 private Rectangle box;
19 private JPopupMenu popup;
20 private JMenuItem menuItem;
21 private ArrayList rects;
22 protected static int viewLength = 0;
23 protected static int extraHeight = 0;
24 public static final int NOTE_HEIGHT = 10, NOTE_WIDTH = 40, VIEW_WIDTH = 200;
26 public MooTrackView (Track track) {
31 setBackground(Color.white);
32 setBorder(BorderFactory.createLineBorder(Color.black));
34 setPreferredSize(new Dimension(VIEW_WIDTH, 140 * NOTE_HEIGHT));
36 // Creates temporary variables
39 rects = new ArrayList(track.size() / 2);
40 extraHeight = Toolkit.getDefaultToolkit().getScreenSize().height - 150;
42 // Places note elements
43 for (int i = 0; i < track.size(); i++) {
45 if (note instanceof MooNote) {
46 // Adds the note element to the note area and moves it to the appropriate place.
47 MooNote mn = (MooNote)note;
48 elem = new MooNoteElement(this, mn);
50 layoutElement(elem, false);
52 setPreferredSize(new Dimension(VIEW_WIDTH, viewLength + extraHeight));
57 // Creates pop-up menu.
58 popup = new JPopupMenu();
59 menuItem = new JMenuItem("Add note...");
60 // menuItem.addActionListener();
63 // Adds listeners for popup menu and keyboard synthesizer.
64 addMouseListener(new MAdapter());
65 addKeyListener(new MooKeyboard());
68 public void layoutElement(MooNoteElement elem, boolean old){
69 // If the element is currently in the view, removes its coordinates from the list.
70 Rectangle r = new Rectangle();
72 r = elem.getBounds(r);
73 for (Iterator i = rects.iterator(); i.hasNext();){
82 // Creates temporary variables.
83 int ticksPerSixteenth = Moosique.getSequence().getResolution() / 4;
84 MooNote mn = elem.getNote();
85 Insets insets = getInsets();
88 // Calculates coordinates.
90 y = insets.top + (int)(mn.getTick() / ticksPerSixteenth) * NOTE_HEIGHT;
91 height = (mn.getDuration() / ticksPerSixteenth) * NOTE_HEIGHT;
92 if (height == 0) height = NOTE_HEIGHT;
93 r = new Rectangle(x, y, NOTE_WIDTH, height);
95 // Places the element in the appropriate place.
96 while(isOccupied(r)) r.translate(NOTE_WIDTH, 0);
99 if (viewLength < (y + height)){
100 viewLength = y + height;
101 if(old)setPreferredSize(new Dimension(VIEW_WIDTH, viewLength + extraHeight));
106 public Track getTrack() {
112 * Updates the track view.
114 public void update(long tickPosition) {
118 private boolean isOccupied(Rectangle r) {
119 Iterator it = rects.iterator();
120 while (it.hasNext()) {
121 if(r.intersects((Rectangle)it.next())) return true;
126 public void remove(MooNoteElement elem) {
127 remove((Component)elem);
128 elem.getNote().removeFrom(track);
133 public void paintComponent(Graphics g) {
134 super.paintComponent(g);
135 Graphics2D g2 = (Graphics2D)g;
136 for (int c = 0; c < viewLength || c < getHeight(); c += NOTE_HEIGHT) {
137 for (int r = 0; r < (10 * NOTE_WIDTH); r += NOTE_WIDTH) {
138 box = new Rectangle(r, c, NOTE_WIDTH, NOTE_HEIGHT);
139 g2.setColor(Color.gray);
145 class MAdapter extends MouseAdapter {
146 public void mousePressed(MouseEvent e) {
147 if (e.isPopupTrigger()) {
148 popup.show(e.getComponent(), e.getX(), e.getY());
152 public void mouseEntered(MouseEvent e) {
153 // Moosique.setActiveChannel(track.getChannel());