1    /** This program interprets melodic lines given in ABC notation as a
2     * chromesthete might.
3     *
4     * A Pitch class will be defined, and will take center stage in the
5     * processing.
6     *
7     * Interpreting a melody in ABC notation will amount to flashing
8     * colored rectangles for prescribed durations, while sounding
9     * the pitch! The color of the rectangle will correspond to pitch
10    * class. The duration will correspond to the duration of the note.
11    *
12    * For this first version of the program, the duration will be held
13    * 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
18    * at a time.
19    *
20    * ABC represents notes in a manner consistent with these examples:
21    * C, D, E, C D E c d e
22    *
23    *Google ABC music representation if you would like to know more about it.
24    */
25   
26   package chromesthesia0;
27   
28   import java.util.Scanner;
29   import javax.swing.JOptionPane;
30   import  javax.swing.SwingUtilities;
31   import painter.SPainter;
32   
33   public class Chromesthesia {
34   
35       // INFRASTRUCTURE FOR THE PROGRAM -- LAUNCHING A "GRAPHICS" THREAD
36   
37       public static void main(String[] args) {
38           SwingUtilities.invokeLater(new ThreadForGUI());
39       }
40   
41       private static class ThreadForGUI implements Runnable {
42           @Override
43           public void run() {
44               new Chromesthesia();
45           }
46       }
47   
48       public Chromesthesia() {
49           interpreter();
50       }
51   
52       // FEATURED VARIABLES
53   
54       private static SPainter miro;
55       private static Pitch[] pitches;
56   
57       // THE INTERPRETER
58   
59       public static void interpreter() {
60   
61           initialization(); // miro and pitches
62   
63           while (true) {
64               String input = getInput();
65               if (input.equalsIgnoreCase("EXIT") ) {
66                   break;
67               } else {
68                   try {
69                       playMelody(input, pitches);
70                   } catch (Exception ex) {
71                       showErrorMessage(ex.toString());
72                   }
73               }
74           }
75   
76           cleanup(); // miro has to go
77   
78       }
79   
80       // METHODS PERTAINING TO THE CHROMESTHETIC PITCHES
81       private static Pitch[] establishPitches(SPainter painter) {
82           Pitch[] pitches = new Pitch[9];
83           Pitch pitchMiddleC = new Pitch("C", painter);
84           pitches[0] = pitchMiddleC;
85           Pitch pitchLowC = new Pitch("C,", painter);
86           pitches[1] = pitchLowC;
87           Pitch pitchHighC = new Pitch("c", painter);
88           pitches[2] = pitchHighC;
89           Pitch pitchMiddleD = new Pitch("D", painter);
90           pitches[3] = pitchMiddleD;
91           Pitch pitchLowD = new Pitch("D,", painter);
92           pitches[4] = pitchLowD;
93           Pitch pitchHighD = new Pitch("d", painter);
94           pitches[5] = pitchHighD;
95           Pitch pitchMiddleE = new Pitch("E", painter);
96           pitches[6] = pitchMiddleE;
97           Pitch pitchLowE = new Pitch("E,", painter);
98           pitches[7] = pitchLowE;
99           Pitch pitchHighE = new Pitch("e", painter);
100          pitches[8] = pitchHighE;
101          return pitches;
102      }
103  
104      private static Pitch find(String token, Pitch[] pitches) throws Exception {
105          for (int i = 0; i < pitches.length; i = i + 1) {
106              Pitch pitch = pitches[i];
107              if (pitch.abcName().equals(token)) {
108                  return pitch;
109              }
110          }
111          throw new Exception("### PITCH " + token + " NOT FOUND");
112      }
113  
114      private static void display(Pitch[] pitches) {
115          for (int i = 0; i < pitches.length; i = i + 1) {
116              System.out.println(pitches[i].toString());
117          }
118      }
119      private static void playMelody(String input, Pitch[] pitches) throws Exception {
120          Scanner scanner = new Scanner(input);
121          while ( scanner.hasNext() )
122          {String token = scanner.next();
123          Pitch pitch = find(token,pitches);
124          pitch.play("1");
125          }
126      }
127  
128      // INITIALIZATION, CLEANUP, GETTING INPUT, ERROR MESSAGING
129      static private void showErrorMessage(String message) {
130          miro.setVisible(false);
131      JOptionPane.showMessageDialog(null, message);
132      }
133      private static void initialization() {
134          // ESTABLISH THE PAINTER AND GIVE IT A SUBSTANTIAL BRUSH WIDTH
135          miro = new SPainter("Chromesthesia",500,500);
136          miro.setVisible(false);
137          miro.setBrushWidth(7);
138          // ESTABLISH THE CHROMESTITIC PITCH CLASS OBJECTS
139          pitches = establishPitches(miro);
140          display(pitches);
141      }
142  
143      private static String getInput() {
144          miro.setVisible(false);
145          String label = "Please enter a melody in ABC notation, or EXIT ...     ";
146          String input = JOptionPane.showInputDialog(null,label);
147          miro.setVisible(true);
148          if ( input == null ) { input = ""; }
149          return input;
150      }
151      static private void cleanup() {
152  
153          System.exit(0);
154      }
155  
156  }
157  
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