MooViewCounter.java

   1 import javax.sound.midi.*;
   2 import javax.swing.*;
   3 import java.awt.*;
   4
   5 /**
   6  * A graphical representation of the time signature of the current sequence.
   7  *
   8  * @author  Andersson, Andreen, Lanneskog, Pehrson
   9  * @version 1
  10  */
  11
  12 public class MooViewCounter extends JPanel {
  13
  14         private int measure, halfBeat, beat, halfNote;
  15         private static final int CELL_HEIGHT = 10;
  16
  17         /**
  18          * Creates an musical ruler depending on the timesignature
  19          */
  20
  21         public MooViewCounter (MetaMessage[] timeSigs) {
  22                 int timeSig1 = 4, timeSig2 = 4; // ...for now
  23                 setBackground(Moosique.getGUI().bgColor);
  24                 setPreferredSize(new Dimension(35, 200 * CELL_HEIGHT));
  25
  26                 switch (timeSig2) {
  27                         case  16: measure = timeSig1;           // 1/16
  28                                 break;
  29                         case  8: measure = timeSig1 * 2;        // 1/16
  30                                  halfBeat = measure / timeSig1; // 1/8
  31                                 break;
  32                         case  4: measure = timeSig1 * 4;        // 1/16
  33                                  halfBeat = beat / 2;           // 1/8
  34                                  beat = measure / timeSig1;     // 1/4
  35                                 break;
  36                         case  2: measure = timeSig1 * 8;        // 1/16
  37                                  halfBeat = beat / 2;           // 1/8
  38                                  beat = halfNote / 2;           // 1/4
  39                                  halfNote = measure / timeSig1; // 1/2
  40                                 break;
  41                         case  1: measure = timeSig1 * 16;       // 1/16
  42                                  halfBeat = beat / 2;           // 1/8
  43                                  beat = halfNote / 2;           // 1/4
  44                                  halfNote = measure / 2;        // 1/2
  45                                 break;
  46                 }
  47
  48         }
  49
  50         /**
  51          * Draws the ruler-like fields.
  52          * @param g The Graphics object it operates on.
  53          */
  54         public void paintComponent(Graphics g) {
  55                 super.paintComponent(g);
  56                 if (!(g instanceof Graphics2D)) return;
  57                 Graphics2D g2 = (Graphics2D)g;
  58                 g2.setColor(Color.black);
  59                 for (int c = 0; c < 200; c++) {
  60                         g2.drawLine(0, c * CELL_HEIGHT, 5, c * CELL_HEIGHT);                                    // 1/16
  61                         g2.drawLine(0, c * CELL_HEIGHT * halfBeat, 10, c * CELL_HEIGHT * halfBeat);             // 1/8
  62                         g2.drawLine(0, c * CELL_HEIGHT * beat, 15, c * CELL_HEIGHT * beat);                     // 1/4
  63                         g2.drawLine(0, c * CELL_HEIGHT * halfNote, 20, c * CELL_HEIGHT * halfNote);             // 1/2
  64                         g2.drawLine(0, c * CELL_HEIGHT * measure, 30, c * CELL_HEIGHT * measure);               // 1/1
  65                 }
  66         }
  67 }