1    /* 
2     * This program interprets melodic lines given in ABC notation as a 
3     * chromesthete might. 
4     * 
5     * A Pitch class will be defined, and will take center stage in the 
6     * processing. 
7     * 
8     * Interpreting a melody in ABC notation will amount to flashing 
9     * colored rectangles for prescribed durations, while sounding 
10    * the pitch! The color of the rectangle will correspond to pitch 
11    * class. The duration will correspond to the duration of the note. 
12    * 
13    * For this first version of the program, the duration will be held constant at 1 beat 
14    * 
15    * Three sorts of images will appear on the screen, the chromesthetic 
16    * output box, a text input box, and an error message box. Simplicity 
17    * of design is rendered by permitting only one box to be on the screen at a time. 
18    * 
19    * Google ABC music representation if you would like to know more about it. 
20    */
21   
22   package chromesthesia0;
23   
24   import java.util.Scanner;
25   import javax.swing.JOptionPane;
26   import javax.swing.SwingUtilities;
27   import painter.SPainter;
28   
29   public class Chromesthesia {
30       // INFRASTRUCTURE FOR THE PROGRAM -- LAUNCHING A "GRAPHICS" THREAD
31   
32       public static void main(String[] args) {
33           SwingUtilities.invokeLater(new ThreadForGUI());
34       }
35   
36       private static class ThreadForGUI implements Runnable {
37           @Override
38           public void run() {
39               new Chromesthesia();
40           }
41       }
42   
43       public Chromesthesia() {
44           interpreter();
45   
46       }
47   
48       // FEATURED VARIABLES
49       private static SPainter miro;
50       private static Pitch[] pitches;
51   
52       // The INTERPRETER
53   
54       public static void interpreter() {
55           initialization(); // miro and pitches
56   
57           while (true) {
58               String input = getInput();
59   
60               if (input.equalsIgnoreCase("EXIT")) {
61                   break;
62               } else {
63                   try {
64                       playMelody(input, pitches);
65                   } catch (Exception ex) {
66                       showErrorMessage(ex.toString());
67                   }
68               }
69   
70           }
71           cleanup();
72       }
73   
74       // METHODS PRETAINING TO THE CHROMESTHETIC PITCHES
75   
76       private static Pitch[] establishPitches(SPainter painter) {
77           Pitch[] pitches = new Pitch[9];
78           Pitch pitchMiddleC = new Pitch("C", painter);
79           pitches[0] = pitchMiddleC;
80           Pitch pitchLowC = new Pitch("C,", painter);
81           pitches[1] = pitchLowC;
82           Pitch pitchHighC = new Pitch("c", painter);
83           pitches[2] = pitchHighC;
84           Pitch pitchMiddleD = new Pitch("D", painter);
85           pitches[3] = pitchMiddleD;
86           Pitch pitchLowD = new Pitch("D,", painter);
87           pitches[4] = pitchLowD;
88           Pitch pitchHighD = new Pitch("d", painter);
89           pitches[5] = pitchHighD;
90           Pitch pitchMiddleE = new Pitch("E", painter);
91           pitches[6] = pitchMiddleE;
92           Pitch pitchLowE = new Pitch("E,", painter);
93           pitches[7] = pitchLowE;
94           Pitch pitchHighE = new Pitch("e", painter);
95           pitches[8] = pitchHighE;
96   
97           return pitches;
98       }
99   
100      private static Pitch find(String token, Pitch[] pitches) throws Exception {
101          for (int i = 0; i < pitches.length; i = i + 1) {
102              Pitch pitch = pitches[i];
103              if (pitch.abcName().equals(token)) {
104                  return pitch;
105              }
106          }
107          throw new Exception("### PITCH " + token + " NOT FOUND");
108      }
109  
110      private static void display(Pitch[] pitches) {
111          for (int i = 0; i < pitches.length; i = i + 1) {
112              System.out.println(pitches[i].toString());
113          }
114      }
115  
116      private static void playMelody(String input, Pitch[] pitches) throws Exception {
117          Scanner scanner = new Scanner(input);
118          while (scanner.hasNext()) {
119  
120              String token = scanner.next();
121              Pitch pitch = find(token, pitches);
122              pitch.play("1");
123          }
124      }
125  
126      // INITIALIZATION, CLEANUP, GETTING INPUT, ERROR MESSAGING
127  
128      static private void showErrorMessage(String message) {
129          miro.setVisible(false);
130          JOptionPane.showMessageDialog(null, message);
131      }
132  
133      private static void initialization() {
134          miro = new SPainter("Chromesthesia", 500, 500);
135          miro.setVisible(false);
136          miro.setBrushWidth(7);
137          pitches = establishPitches(miro);
138          display(pitches);
139      }
140  
141      private static String getInput() {
142          miro.setVisible(false);
143          String label = "Please enter a melody in ABC notation, or EXIT ...     ";
144          String input = JOptionPane.showInputDialog(null, label);
145          miro.setVisible(true);
146          if (input == null) {
147              input = "";
148          }
149          return input;
150  
151      }
152  
153      static private void cleanup() {
154          System.exit(0);
155      }
156  }