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    * 
16    * Three sorts of images will appear on the screen, the chromesthetic 
17    * output box, a text input box, and an error message box. Simplicity 
18    * of design is rendered by permitting only one box to be on the screen 
19    * at a time. 
20    * 
21    * ABC represents notes in a manner consistent with these examples: 
22    * C, D, E, C D E c d e 
23    * 
24    * Google ABC music representation if you would like to know more about it. 
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       // INFRASTRUCTURE FOR THE PROGRAM -- LAUNCHING A "GRAPHICS" THREAD
35       public static void main(String[] args) {
36           SwingUtilities.invokeLater(new ThreadForGUI());
37       }
38       private static class ThreadForGUI implements Runnable {
39           @Override
40           public void run() {
41               new Chromesthesia();
42           }
43       }
44       public Chromesthesia() {
45           interpreter();
46       }
47       // FEATURED VARIABLES
48       private static SPainter miro;
49       private static Pitch[] pitches;
50       // THE INTERPRETER
51       public static void interpreter() {
52           initialization(); // miro and pitches
53           while ( true ) {
54               String input = getInput();
55               if ( input.equalsIgnoreCase("EXIT") ) {
56                   break;
57               } else {
58                   try {
59                       playMelody(input,pitches);
60                   } catch (Exception ex) {
61                       showErrorMessage(ex.toString());
62                   }
63               }
64           }
65           cleanup(); // miro has to go
66       }
67       // METHODS PERTAINING TO THE CHROMESTHETIC PITCHES
68       private static Pitch[] establishPitches(SPainter painter) {
69           Pitch[] pitches = new Pitch[9];
70           Pitch pitchMiddleC = new Pitch("C",painter);
71           pitches[0] = pitchMiddleC;
72           Pitch pitchLowC = new Pitch("C,",painter);
73           pitches[1] = pitchLowC;
74           Pitch pitchHighC = new Pitch("c",painter);
75           pitches[2] = pitchHighC;
76           Pitch pitchMiddleD = new Pitch("D",painter);
77           pitches[3] = pitchMiddleD;
78           Pitch pitchLowD = new Pitch("D,",painter);
79           pitches[4] = pitchLowD;
80           Pitch pitchHighD = new Pitch("d",painter);
81           pitches[5] = pitchHighD;
82           Pitch pitchMiddleE = new Pitch("E",painter);
83           pitches[6] = pitchMiddleE;
84           Pitch pitchLowE = new Pitch("E,",painter);
85           pitches[7] = pitchLowE;
86           Pitch pitchHighE = new Pitch("e",painter);
87           pitches[8] = pitchHighE;
88           return pitches;
89       }
90       private static Pitch find(String token, Pitch[] pitches) throws Exception {
91           for ( int i = 0; i < pitches.length; i = i + 1 ) {
92               Pitch pitch = pitches[i];
93               if ( pitch.abcName().equals(token) ) {
94                   return pitch;
95               }
96           }
97           throw new Exception("### PITCH " + token + " NOT FOUND");
98       }
99       private static void display(Pitch[] pitches) {
100          for ( int i = 0; i < pitches.length; i = i + 1 ) {
101              System.out.println(pitches[i].toString());
102          }
103      }
104      private static void playMelody(String input, Pitch[] pitches) throws Exception {
105          Scanner scanner = new Scanner(input);
106          while ( scanner.hasNext() ) {
107              String token = scanner.next();
108              Pitch pitch = find(token,pitches);
109              pitch.play("1");
110          }
111      }
112      // INITIALIZATION, CLEANUP, GETTING INPUT, ERROR MESSAGING
113      static private void showErrorMessage(String message) {
114          miro.setVisible(false);
115          JOptionPane.showMessageDialog(null, message);
116      }
117      private static void initialization() {
118  // ESTABLISH THE PAINTER AND GIVE IT A SUBSTANTIAL BRUSH WIDTH
119          miro = new SPainter("Chromesthesia",500,500);
120          miro.setVisible(false);
121          miro.setBrushWidth(7);
122  // ESTABLISH THE CHROMESTITIC PITCH CLASS OBJECTS
123          pitches = establishPitches(miro);
124          display(pitches);
125      }
126      private static String getInput() {
127          miro.setVisible(false);
128          String label = "Please enter a melody in ABC notation, or EXIT ... ";
129          String input = JOptionPane.showInputDialog(null,label);
130          miro.setVisible(true);
131          if ( input == null ) { input = ""; }
132          return input;
133      }
134      static private void cleanup() {
135          System.exit(0);
136      }
137  }