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BeatBoxSaveOnly.javaAPI DocExample9165Wed Mar 23 20:12:08 GMT 2005None

BeatBoxSaveOnly

public class BeatBoxSaveOnly extends Object

Fields Summary
JPanel
mainPanel
ArrayList
checkboxList
Sequencer
sequencer
Sequence
sequence
Sequence
mySequence
Track
track
JFrame
theFrame
String[]
instrumentNames
int[]
instruments
Constructors Summary
Methods Summary
public voidbuildGUI()

          theFrame = new JFrame("Cyber BeatBox");
          theFrame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
          BorderLayout layout = new BorderLayout();
          JPanel background = new JPanel(layout);
          background.setBorder(BorderFactory.createEmptyBorder(10,10,10,10));

          checkboxList = new ArrayList<JCheckBox>();
          Box buttonBox = new Box(BoxLayout.Y_AXIS);

          JButton start = new JButton("Start");
          start.addActionListener(new MyStartListener());
          buttonBox.add(start);
          
          
          JButton stop = new JButton("Stop");
          stop.addActionListener(new MyStopListener());
          buttonBox.add(stop);

          JButton upTempo = new JButton("Tempo Up");
          upTempo.addActionListener(new MyUpTempoListener());
          buttonBox.add(upTempo);

           JButton downTempo = new JButton("Tempo Down");
          downTempo.addActionListener(new MyDownTempoListener());
          buttonBox.add(downTempo);

          JButton saveIt = new JButton("Serialize It");  // new button
          saveIt.addActionListener(new MySendListener());
          buttonBox.add(saveIt);

          JButton restore = new JButton("Restore");     // new button
          restore.addActionListener(new MyReadInListener());
          buttonBox.add(restore);

          Box nameBox = new Box(BoxLayout.Y_AXIS);
          for (int i = 0; i < 16; i++) {
              nameBox.add(new Label(instrumentNames[i]));
          }
        
          background.add(BorderLayout.EAST, buttonBox);
          background.add(BorderLayout.WEST, nameBox);

          theFrame.getContentPane().add(background);
          
          GridLayout grid = new GridLayout(16,16);
          grid.setVgap(1);
          grid.setHgap(2);
          mainPanel = new JPanel(grid);
          background.add(BorderLayout.CENTER, mainPanel);


          for (int i = 0; i < 256; i++) {                    
                JCheckBox c = new JCheckBox();
                c.setSelected(false);
                checkboxList.add(c);
                mainPanel.add(c);            
          } // end loop

          setUpMidi();

          theFrame.setBounds(50,50,300,300);
          theFrame.pack();
          theFrame.setVisible(true);
        
public voidbuildTrackAndStart()

        // this will hold the instruments for each vertical column,
        // in other words, each tick (may have multiple instruments)
        int[] trackList = null;
     
        sequence.deleteTrack(track);
        track = sequence.createTrack();
        

      for (int i = 0; i < 16; i++) {
         trackList = new int[16];

         int key = instruments[i];

         for (int j = 0; j < 16; j++ ) {         
               JCheckBox jc = (JCheckBox) checkboxList.get(j + (16*i));
               
              if ( jc.isSelected()) {
                 trackList[j] = key;
              } else {
                 trackList[j] = 0;
              }       
          } // close inner

       makeTracks(trackList);
     } // close outer

     track.add(makeEvent(192,9,1,0,15)); // - so we always go to full 16 beats 
               
   
      
       try {
           
           sequencer.setSequence(sequence);  
           sequencer.setLoopCount(sequencer.LOOP_CONTINUOUSLY);                  
           sequencer.start();
           sequencer.setTempoInBPM(120);
       } catch(Exception e) {e.printStackTrace();}
 
      
public static voidmain(java.lang.String[] args)

    

            
        new BeatBoxSaveOnly().buildGUI();
      
public javax.sound.midi.MidiEventmakeEvent(int comd, int chan, int one, int two, int tick)

          MidiEvent event = null;
          try {
            ShortMessage a = new ShortMessage();
            a.setMessage(comd, chan, one, two);
            event = new MidiEvent(a, tick);
            
            }catch(Exception e) { }
          return event;
       
public voidmakeTracks(int[] list)


         for (int i = 0; i < 16; i++) {
           int key = list[i];

           if (key != 0) {
               track.add(makeEvent(144,9,key, 100, i));
               track.add(makeEvent(128,9,key, 100, i + 1));
           }
         }
      
public voidsetUpMidi()

       try {
        sequencer = MidiSystem.getSequencer();
        sequencer.open();
        // sequencer.addMetaEventListener(this);
        sequence = new Sequence(Sequence.PPQ,4);
        track = sequence.createTrack();
        sequencer.setTempoInBPM(120);
        
       } catch(Exception e) {e.printStackTrace();}