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 
14   * constant at 1 beat. 
15   130 
16   * 
17   * Three sorts of images will appear on the screen, the chromesthetic 
18   * output box, a text input box, and an error message box. Simplicity 
19   * of design is rendered by permitting only one box to be on the screen 
20   * at a time. 
21   * 
22   * ABC represents notes in a manner consistent with these examples: 
23   * C, D, E, C D E c d e 
24   * 
25   * Google ABC music representation if you would like to know more about it. 
26   */
27   package chromesthesia0;
28   import java.util.Scanner;
29   import javax.swing.JOptionPane;
30   import javax.swing.SwingUtilities;
31   import painter.SPainter;
32   public class Chromesthesia {
33       // INFRASTRUCTURE FOR THE PROGRAM -- LAUNCHING A "GRAPHICS" THREAD
34       public static void main(String[] args) {
35           SwingUtilities.invokeLater(new ThreadForGUI());
36       }
37       private static class ThreadForGUI implements Runnable {
38           @Override
39           public void run() {
40               new Chromesthesia();
41           }
42       }
43       public Chromesthesia() {
44           interpreter();
45       }
46       // FEATURED VARIABLES
47       private static SPainter miro;
48       private static Pitch[] pitches;
49       // THE INTERPRETER
50       public static void interpreter() {
51           initialization(); // miro and pitches
52           while ( true ) {
53               String input = getInput();
54               if ( input.equalsIgnoreCase("EXIT") ) {
55                   break;
56               } else {
57                   try {
58                       playMelody(input,pitches);
59                   } catch (Exception ex) {
60                       showErrorMessage(ex.toString());
61                   }
62               }
63           }
64           cleanup(); // miro has to go
65       }
66       // METHODS PERTAINING TO THE CHROMESTHETIC PITCHES
67       private static Pitch[] establishPitches(SPainter painter) {
68           Pitch[] pitches = new Pitch[9];
69           Pitch pitchMiddleC = new Pitch("C",painter);
70           pitches[0] = pitchMiddleC;
71           Pitch pitchLowC = new Pitch("C,",painter);
72           pitches[1] = pitchLowC;
73           Pitch pitchHighC = new Pitch("c",painter);
74           pitches[2] = pitchHighC;
75           Pitch pitchMiddleD = new Pitch("D",painter);
76           pitches[3] = pitchMiddleD;
77           Pitch pitchLowD = new Pitch("D,",painter);
78           pitches[4] = pitchLowD;
79           Pitch pitchHighD = new Pitch("d",painter);
80           pitches[5] = pitchHighD;
81           Pitch pitchMiddleE = new Pitch("E",painter);
82           pitches[6] = pitchMiddleE;
83           Pitch pitchLowE = new Pitch("E,",painter);
84           pitches[7] = pitchLowE;
85           Pitch pitchHighE = new Pitch("e",painter);
86           pitches[8] = pitchHighE;
87           return pitches;
88       }
89       private static Pitch find(String token, Pitch[] pitches) throws Exception {
90           for ( int i = 0; i < pitches.length; i = i + 1 ) {
91               Pitch pitch = pitches[i];
92               if ( pitch.abcName().equals(token) ) {
93                   return pitch;
94               }
95           }
96           throw new Exception("### PITCH " + token + " NOT FOUND");
97       }
98       private static void display(Pitch[] pitches) {
99           for ( int i = 0; i < pitches.length; i = i + 1 ) {
100              System.out.println(pitches[i].toString());
101          }
102      }
103      private static void playMelody(String input, Pitch[] pitches) throws Exception {
104          Scanner scanner = new Scanner(input);
105          while ( scanner.hasNext() ) {
106              String token = scanner.next();
107              Pitch pitch = find(token,pitches);
108              pitch.play("1");
109          }
110      }
111      // INITIALIZATION, CLEANUP, GETTING INPUT, ERROR MESSAGING
112      static private void showErrorMessage(String message) {
113          miro.setVisible(false);
114          JOptionPane.showMessageDialog(null, message);
115      }
116      private static void initialization() {
117  // ESTABLISH THE PAINTER AND GIVE IT A SUBSTANTIAL BRUSH WIDTH
118          miro = new SPainter("Chromesthesia",500,500);
119          miro.setVisible(false);
120          miro.setBrushWidth(7);
121  // ESTABLISH THE CHROMESTITIC PITCH CLASS OBJECTS
122          pitches = establishPitches(miro);
123          display(pitches);
124      }
125      private static String getInput() {
126          miro.setVisible(false);
127          String label = "Please enter a melody in ABC notation, or EXIT ... ";
128          String input = JOptionPane.showInputDialog(null,label);
129          miro.setVisible(true);
130          if ( input == null ) { input = ""; }
131          return input;
132      }
133      static private void cleanup() {
134          System.exit(0);
135      }
136  }