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 one 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 ne bx 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   
27   package chromesthesia0;
28   
29   import java.util.Scanner;
30   import javax.swing.JOptionPane;
31   import javax.swing.SwingUtilities;
32   import painter.SPainter;
33   
34   public class Chromesthesia {
35   
36       //infrastructure for the program == launching a "graphics" thread
37   
38       public static void main(String[] args) {
39           SwingUtilities.invokeLater(new ThreadForGUI());
40       }
41   
42       private static class ThreadForGUI implements Runnable {
43           @Override
44           public void run() {
45               new Chromesthesia();
46           }
47       }
48   
49       public Chromesthesia() {
50           interpreter();
51       }
52   
53       //featured variables
54   
55       private static SPainter miro;
56       private static Pitch[] pitches;
57   
58       //the interpreter
59       public static void interpreter() {
60           initialization(); // miro and pitches
61   
62           while(true) {
63               String input = getInput();
64               if( input.equals("EXIT")) {
65                   break;
66               } else {
67                   try {
68                       playMelody(input,pitches);
69                   } catch (Exception ex) {
70                       showErrorMessage(ex.toString());
71                   }
72               }
73           }
74   
75           cleanup(); //miro has to go
76       }
77   
78       // METHODS PERTAINING TO THE CHROMESTHETIC PITCHES
79       private static Pitch[] establishPitches(SPainter painter) {
80           Pitch[] pitches = new Pitch[9];
81           Pitch pitchMiddleC = new Pitch("C",painter);
82           pitches[0] = pitchMiddleC;
83           Pitch pitchLowC = new Pitch("C,",painter);
84           pitches[1] = pitchLowC;
85           Pitch pitchHighC = new Pitch("c",painter);
86           pitches[2] = pitchHighC;
87           Pitch pitchMiddleD = new Pitch("D",painter);
88           pitches[3] = pitchMiddleD;
89           Pitch pitchLowD = new Pitch("D,",painter);
90           pitches[4] = pitchLowD;
91           Pitch pitchHighD = new Pitch("d",painter);
92           pitches[5] = pitchHighD;
93           Pitch pitchMiddleE = new Pitch("E",painter);
94           pitches[6] = pitchMiddleE;
95           Pitch pitchLowE = new Pitch("E,",painter);
96           pitches[7] = pitchLowE;
97           Pitch pitchHighE = new Pitch("e",painter);
98           pitches[8] = pitchHighE;
99           return pitches;
100      }
101  
102      private static Pitch find(String token, Pitch[] pitches) throws Exception {
103          for ( int i = 0; i < pitches.length; i = i + 1 ) {
104              Pitch pitch = pitches[i];
105              if ( pitch.abcName().equals(token) ) {
106                  return pitch;
107              }
108          }
109          throw new Exception("### PITCH " + token + " NOT FOUND");
110      }
111      private static void display(Pitch[] pitches) {
112          for ( int i = 0; i < pitches.length; i = i + 1 ) {
113              System.out.println(pitches[i].toString());
114          }
115      }
116      private static void playMelody(String input, Pitch[] pitches) throws Exception {
117          Scanner scanner = new Scanner(input);
118          while(scanner.hasNext()) {
119              String token = scanner.next();
120              Pitch pitch = find(token,pitches);
121              pitch.play("1");
122          }
123      }
124  
125      // INITIALIZATION, CLEANUP, GETTING INPUT, ERROR MESSAGING
126      static private void showErrorMessage(String message) {
127          miro.setVisible(false);
128          JOptionPane.showMessageDialog(null, message);
129      }
130      private static void initialization() {
131  // ESTABLISH THE PAINTER AND GIVE IT A SUBSTANTIAL BRUSH WIDTH
132          miro = new SPainter("Chromesthesia",500,500);
133          miro.setVisible(false);
134          miro.setBrushWidth(7);
135  // ESTABLISH THE CHROMESTITIC PITCH CLASS OBJECTS
136          pitches = establishPitches(miro);
137          display(pitches);
138      }
139      private static String getInput() {
140          miro.setVisible(false);
141          String label = "Please enter a melody in ABC notation, or EXIT ... ";
142          String input = JOptionPane.showInputDialog(null,label);
143          miro.setVisible(true);
144          if ( input == null ) { input = ""; }
145          return input;
146      }
147      static private void cleanup() {
148          System.exit(0);
149      }
150  }
151