MooViewCounter.java

   1 import javax.swing.*;
   2 import java.awt.*;
   3
   4 /**
   5  *
   6  *
   7  * @author  Andersson, Andreen, Lanneskog, Pehrson
   8  * @version 1
   9  */
  10
  11 public class MooViewCounter extends JPanel {
  12
  13         private int timeSig1, timeSig2, measure, halfBeat, beat, halfNote;
  14         private static final int CELL_HEIGHT = 10;
  15
  16         /**
  17          * Creates an musical ruler depending on the timesignature
  18          */
  19
  20         public MooViewCounter (int ts1, int ts2) {
  21                 timeSig1 = ts1;
  22                 timeSig2 = ts2;
  23                 setBackground(Color.black);
  24                 setPreferredSize(new Dimension(35, 200 * CELL_HEIGHT));
  25                 switch (timeSig2) {
  26                         case  16: measure = timeSig1;           // 1/16
  27                                 break;
  28                         case  8: measure = timeSig1 * 2;        // 1/16
  29                                  halfBeat = measure / timeSig1; // 1/8
  30                                 break;
  31                         case  4: measure = timeSig1 * 4;        // 1/16
  32                                  halfBeat = beat / 2;           // 1/8
  33                                  beat = measure / timeSig1;     // 1/4
  34                                 break;
  35                         case  2: measure = timeSig1 * 8;        // 1/16
  36                                  halfBeat = beat / 2;           // 1/8
  37                                  beat = halfNote / 2;           // 1/4
  38                                  halfNote = measure / timeSig1; // 1/2
  39                                 break;
  40                         case  1: measure = timeSig1 * 16;       // 1/16
  41                                  halfBeat = beat / 2;           // 1/8
  42                                  beat = halfNote / 2;           // 1/4
  43                                  halfNote = measure / 2;        // 1/2
  44                                 break;
  45                 }
  46
  47         }
  48         public void paintComponent(Graphics g) {
  49                 super.paintComponent(g);
  50                 setBackground(Color.black);
  51
  52                 if (!(g instanceof Graphics2D)) return;
  53                 Graphics2D g2 = (Graphics2D)g;
  54                 g2.setColor(Color.white);
  55                 for (int c = 0; c < 200; c++) {
  56                         g2.drawLine(0, c * CELL_HEIGHT, 5, c * CELL_HEIGHT);                                    // 1/16
  57                         g2.drawLine(0, c * CELL_HEIGHT * halfBeat, 10, c * CELL_HEIGHT * halfBeat);             // 1/8
  58                         g2.drawLine(0, c * CELL_HEIGHT * beat, 15, c * CELL_HEIGHT * beat);                     // 1/4
  59                         g2.drawLine(0, c * CELL_HEIGHT * halfNote, 20, c * CELL_HEIGHT * halfNote);             // 1/2
  60                         g2.drawLine(0, c * CELL_HEIGHT * measure, 30, c * CELL_HEIGHT * measure);               // 1/1
  61                 }
  62         }
  63 }