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 int columns;
  16         private boolean selected;
  17
  18         /**
  19          * Creates a new note element.
  20          * @param mn    the note that will be graphically represented
  21          * @param rows  the number of rows that the note will occupy
  22          */
  23         public MooNoteElement (MooNote mn) {
  24                 note = mn;
  25                 columns = mn.getDuration() / 24;
  26                 setBorder(BorderFactory.createLineBorder(Color.black));
  27         }
  28
  29         /**
  30          * Returns true if the current NoteElement is selected, otherwise false.
  31          * @return if the element is selected
  32          */
  33         public boolean isSelected() {
  34                 return selected;
  35         }
  36
  37         /**
  38          * Selects the current NoteElement.
  39          * @param state if the element should be selected
  40          */
  41         public void setSelected(boolean state) {
  42                 selected = state;
  43         }
  44
  45         /**
  46          *
  47          */
  48         public void paintComponent(Graphics g)
  49         {
  50                 super.paintComponent(g);
  51
  52                 if (note == null || !(g instanceof Graphics2D)) return;
  53                 Graphics2D g2 = (Graphics2D)g;
  54
  55                 String n = "";
  56                 int pitch = note.getPitch();
  57                 switch (pitch % 12) {
  58                         case 0: n = "C"; break;
  59                         case 1: n = "C#"; break;
  60                         case 2: n = "D"; break;
  61                         case 3: n = "D#"; break;
  62                         case 4: n = "E"; break;
  63                         case 5: n = "F"; break;
  64                         case 6: n = "F#"; break;
  65                         case 7: n = "G"; break;
  66                         case 8: n ="G#"; break;
  67                         case 9: n = "A"; break;
  68                         case 10: n = "A#"; break;
  69                         case 11: n = "B"; break;
  70                 }
  71
  72         /*
  73                 switch(columns) {
  74                         case 0:
  75                         case 1:
  76                         ...
  77                 }
  78         */
  79
  80                 g2.setFont(new Font("Helvetica", Font.PLAIN, 8));
  81                 n = n +(pitch/12);
  82                 g2.drawString(n + " "+ note.getVelocity(), 1, 9);
  83         }
  84 }