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 MooNote note;
  15         private boolean selected;
  16
  17         /**
  18          * Creates a new note element.
  19          * @param mn The note that will be graphically represented
  20          */
  21         public MooNoteElement (MooNote mn) {
  22                 note = mn;
  23                 setPreferredSize(new Dimension(20,20));
  24                 setFont(new Font("Helvetica", Font.PLAIN, 10));
  25
  26                 class MouseList implements MouseListener{
  27                         public void mouseClicked(MouseEvent event){
  28                                 //Bring upp dialog to edit note.
  29                         }
  30
  31                         public void mouseEntered(MouseEvent event){
  32                                 //Show note props in statusbar?
  33                         }
  34
  35                         public void mouseExited(MouseEvent event){
  36                                 //Reset statusbar?
  37                         }
  38
  39                         public void mousePressed(MouseEvent event){     }
  40
  41                         public void mouseReleased(MouseEvent event){}
  42                 };
  43                 MouseListener listener = new MouseList();
  44                 addMouseListener(listener);
  45         }
  46
  47         /**
  48          * Returns true if the current NoteElement is selected, otherwise false.
  49          * @return if the element is selected
  50          */
  51         public boolean isSelected() {
  52                 return selected;
  53         }
  54
  55         /**
  56          * Selects the current NoteElement.
  57          * @param state if the element should be selected
  58          */
  59         public void setSelected(boolean state) {
  60                 selected = state;
  61         }
  62
  63         /**
  64          *
  65          */
  66         public void paintComponent(Graphics g)
  67         {
  68                 super.paintComponent(g);
  69
  70                 if (note == null)
  71                         return;
  72
  73                 if (!(g instanceof Graphics2D))
  74                         return;
  75                 Graphics2D g2 = (Graphics2D)g;
  76
  77                 String n = "";
  78                 int pitch = note.getPitch();
  79                 switch( pitch % 12)
  80                 {
  81                         case 0: n = "C"; break;
  82                         case 1: n = "C#"; break;
  83                         case 2: n = "D"; break;
  84                         case 3: n = "D#"; break;
  85                         case 4: n = "E"; break;
  86                         case 5: n = "F"; break;
  87                         case 6: n = "F#"; break;
  88                         case 7: n = "G"; break;
  89                         case 8: n ="G#"; break;
  90                         case 9: n = "A"; break;
  91                         case 10: n = "A#"; break;
  92                         case 11: n = "B"; break;
  93                 }
  94
  95                 g2.drawString(n +" "+(pitch/12), 2, 2);
  96
  97         }
  98
  99 }