MooNoteElement.java

   1 import javax.swing.*;
   2 import java.awt.*;
   3 import java.awt.event.*;
   4
   5 /**
   6  * Graphical representation of a MIDI note.
   7  *
   8  * @author  Andersson, Andreen, Lanneskog, Pehrson
   9  * @version 1
  10  */
  11
  12 public class MooNoteElement extends JPanel {
  13
  14         private MooTrackView mtv;
  15         private MooNote note;
  16         private boolean selected;
  17         private Rectangle pitchRect, veloRect;
  18         public static final Color bgColor = new Color(160, 218, 255);
  19         private String notePitch;
  20         private String noteVelocity;
  21         private JPopupMenu popup;
  22         private JMenuItem popupRemove, popupProp;
  23
  24         /**
  25          * Creates a new note element.
  26          * @param parent        The MooTrackView that this element will be painted on.
  27          * @param mn    the note that will be graphically represented
  28          */
  29         public MooNoteElement (MooTrackView parent, MooNote mn) {
  30                 mtv = parent;
  31                 note = mn;
  32                 calculateString();
  33                 setBorder(BorderFactory.createLineBorder(Color.black));
  34                 setBackground(bgColor);
  35                 addMouseListener(new MAdapter());
  36
  37                 // Defines coordinates.
  38                 pitchRect = new Rectangle(0, 0, 15, 10);
  39                 veloRect = new Rectangle(20, 0, 40, 10);
  40
  41                 // Creates pop-up menu.
  42                 popup = new JPopupMenu();
  43                 PopupListener pList = new PopupListener();
  44                 popupProp = new JMenuItem("Preferences...");
  45                 popupProp.addActionListener(pList);
  46                 popup.add(popupProp);
  47
  48                 popupRemove = new JMenuItem("Remove");
  49                 popupRemove.addActionListener(pList);
  50                 popup.add(popupRemove);
  51
  52         }
  53
  54         /**
  55          * Returns true if the current NoteElement is selected, otherwise false.
  56          * @return if the element is selected
  57          */
  58         public boolean isSelected() {
  59                 return selected;
  60         }
  61
  62         /**
  63          * Returns the note of this element.
  64          * @return the note
  65          */
  66         public MooNote getNote() {
  67                 return note;
  68         }
  69
  70         /**
  71          * Selects the current NoteElement.
  72          * @param state if the element should be selected
  73          */
  74         public void setSelected(boolean state) {
  75                 selected = state;
  76         }
  77
  78         /**
  79          * Draws the string that shows the note's properties.
  80          * @param g     The Graphics object used to draw the strings.
  81          */
  82         public void paintComponent(Graphics g)
  83         {
  84                 super.paintComponent(g);
  85                 if (!(g instanceof Graphics2D)) return;
  86                 Graphics2D g2 = (Graphics2D)g;
  87                 g2.setFont(new Font("Helvetica", Font.PLAIN, 8));
  88         /*
  89                 switch(columns) {
  90                         case 0:
  91                         case 1:
  92                         ...
  93                 }
  94         */
  95
  96                 g2.drawString(notePitch, 1, 8);
  97                 g2.drawString("" + noteVelocity, 21, 8);
  98         }
  99
 100         /**
 101          * Calculate what the string that shows the note properties should look like.
 102          */
 103         protected void calculateString(){
 104
 105                 noteVelocity = "";
 106                 notePitch = "";
 107                 if(note == null) return;
 108
 109                 int pitch = note.getPitch();
 110                 switch (pitch % 12) {
 111                         case  0: notePitch = "C";  break;
 112                         case  1: notePitch = "C#"; break;
 113                         case  2: notePitch = "D";  break;
 114                         case  3: notePitch = "D#"; break;
 115                         case  4: notePitch = "E";  break;
 116                         case  5: notePitch = "F";  break;
 117                         case  6: notePitch = "F#"; break;
 118                         case  7: notePitch = "G";  break;
 119                         case  8: notePitch = "G#"; break;
 120                         case  9: notePitch = "A";  break;
 121                         case 10: notePitch = "A#"; break;
 122                         case 11: notePitch = "B";  break;
 123                 }
 124                 notePitch += pitch / 12;
 125                 noteVelocity = ""+note.getVelocity();
 126         }
 127
 128         /**
 129          * Listener that checks the mouse actions on this element.
 130          */
 131         class MAdapter extends MouseAdapter {
 132
 133                 public void mouseClicked(MouseEvent e) {
 134
 135                 }
 136
 137                 /**
 138                  * Checks if the mouse is pressed.
 139                  * Pops up the menu if right mousebutton is used.
 140                  * Increases the pitch or velocity if the right mousebutton is pressed while holding ctrl down.
 141                  * Decreases the pitch or velocity if the left mousebutton is pressed while holding ctrl down.
 142                  * @param e The events recieved.
 143                  */
 144                 public void mousePressed(MouseEvent e) {
 145                         if (e.isControlDown()) {
 146                                 if (pitchRect.contains(e.getPoint())) {
 147                                         if (SwingUtilities.isRightMouseButton(e)) {
 148                                                 note.setPitch(note.getPitch() + 1);
 149                                         } else if (SwingUtilities.isLeftMouseButton(e)) {
 150                                                 note.setPitch(note.getPitch() - 1);
 151                                         }
 152                                         calculateString();
 153                                 } else if (veloRect.contains(e.getPoint())) {
 154                                         if (SwingUtilities.isRightMouseButton(e)) {
 155                                                 note.setVelocity(note.getVelocity() + 1);
 156                                         } else if (SwingUtilities.isLeftMouseButton(e)) {
 157                                                 note.setVelocity(note.getVelocity() - 1);
 158                                         }
 159                                         calculateString();
 160                                 }
 161                                 e.getComponent().repaint();
 162                         } else if (e.isPopupTrigger()) {
 163                                 popup.show(e.getComponent(), e.getX(), e.getY());
 164                         }
 165                 }
 166         }
 167
 168         /**
 169          * Listens on the actions made to the popupmenu.
 170          */
 171         class PopupListener implements ActionListener {
 172                 public void actionPerformed(ActionEvent e) {
 173                         Object source = e.getSource();
 174                         if  (source == popupProp) {
 175                                 new MooDialog(note);
 176                         } else if  (source == popupRemove) {
 177                                 remove();
 178                         }
 179                 }
 180         }
 181
 182         /**
 183          * Asks the MooTrackView that it's painted on to remove this element and the note.
 184          */
 185         protected void remove(){
 186                 mtv.removeNote(this);
 187         }
 188
 189 }