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          * Selects the current NoteElement.
  64          * @param state if the element should be selected
  65          */
  66         public void setSelected(boolean state) {
  67                 selected = state;
  68         }
  69
  70         /**
  71          * Draws the string that shows the note's properties.
  72          * @param g     The Graphics object used to draw the strings.
  73          */
  74         public void paintComponent(Graphics g)
  75         {
  76                 super.paintComponent(g);
  77                 if (!(g instanceof Graphics2D)) return;
  78                 Graphics2D g2 = (Graphics2D)g;
  79                 g2.setFont(new Font("Helvetica", Font.PLAIN, 8));
  80         /*
  81                 switch(columns) {
  82                         case 0:
  83                         case 1:
  84                         ...
  85                 }
  86         */
  87
  88                 g2.drawString(notePitch, 1, 9);
  89                 g2.drawString("" + noteVelocity, 21, 9);
  90         }
  91
  92         /**
  93          * Calculate what the string that shows the note properties should look like.
  94          */
  95         protected void calculateString(){
  96
  97                 noteVelocity = "";
  98                 notePitch = "";
  99                 if(note == null) return;
 100
 101                 int pitch = note.getPitch();
 102                 switch (pitch % 12) {
 103                         case  0: notePitch = "C";  break;
 104                         case  1: notePitch = "C#"; break;
 105                         case  2: notePitch = "D";  break;
 106                         case  3: notePitch = "D#"; break;
 107                         case  4: notePitch = "E";  break;
 108                         case  5: notePitch = "F";  break;
 109                         case  6: notePitch = "F#"; break;
 110                         case  7: notePitch = "G";  break;
 111                         case  8: notePitch = "G#"; break;
 112                         case  9: notePitch = "A";  break;
 113                         case 10: notePitch = "A#"; break;
 114                         case 11: notePitch = "B";  break;
 115                 }
 116                 notePitch += pitch / 12;
 117                 noteVelocity = ""+note.getVelocity();
 118         }
 119
 120         /**
 121          * Gets the note that is element represents
 122          * @return the MooNote object.
 123          */
 124         public MooNote getNote(){
 125                 return note;
 126         }
 127
 128         /**
 129          * Listener that checks the mouse actions on this element.
 130          */
 131         class MAdapter extends MouseAdapter {
 132                 /**
 133                  * Checks if the mouse is pressed.
 134                  * Pops up the menu if right mousebutton is used.
 135                  * Increases the pitch or velocity if the right mousebutton is pressed while holding ctrl down.
 136                  * Decreases the pitch or velocity if the left mousebutton is pressed while holding ctrl down.
 137                  * @param e The events recieved.
 138                  */
 139                 public void mousePressed(MouseEvent e) {
 140                         if (e.isControlDown()) {
 141                                 if (pitchRect.contains(e.getPoint())) {
 142                                         if (SwingUtilities.isRightMouseButton(e)) {
 143                                                 note.setPitch(note.getPitch() + 1);
 144                                         } else if (SwingUtilities.isLeftMouseButton(e)) {
 145                                                 note.setPitch(note.getPitch() - 1);
 146                                         }
 147                                         calculateString();
 148                                 } else if (veloRect.contains(e.getPoint())) {
 149                                         if (SwingUtilities.isRightMouseButton(e)) {
 150                                                 note.setVelocity(note.getVelocity() + 1);
 151                                         } else if (SwingUtilities.isLeftMouseButton(e)) {
 152                                                 note.setVelocity(note.getVelocity() - 1);
 153                                         }
 154                                         calculateString();
 155                                 }
 156                                 e.getComponent().repaint();
 157                         } else if (e.isPopupTrigger()) {
 158                                 popup.show(e.getComponent(), e.getX(), e.getY());
 159                         }
 160                 }
 161         }
 162
 163         /**
 164          * Listens on the actions made to the popupmenu.
 165          */
 166         class PopupListener implements ActionListener {
 167                 public void actionPerformed(ActionEvent e) {
 168                         Object source = e.getSource();
 169                         if  (source == popupProp) {
 170                                 new MooDialog(note);
 171                         } else if  (source == popupRemove) {
 172                                 remove();
 173                         }
 174                 }
 175         }
 176
 177         /**
 178          * Asks the MooTrackView that it's painted on to remove this element and the note.
 179          */
 180         protected void remove(){
 181                 mtv.removeNote(this, note);
 182         }
 183
 184 }