package ss;
import javax.sound.midi.*;
import java.io.*;
import javax.swing.*;
import java.awt.*;
public class MiniMusicPlayer3{
static JFrame f = new JFrame("My First Music Video");
static MyDrawPanel ml;
public static void main(String[] args){
MiniMusicPlayer3 mini = new MiniMusicPlayer3();
mini.go();
}
public void setUpGui(){
ml = new MyDrawPanel();
f.setContentPane(ml);
f.setBounds(30,30,300,300);
f.setVisible(true);
}
public void go(){
setUpGui();
try{
Sequencer sequencer = MidiSystem.getSequencer();
sequencer.open();
sequencer.addControllerEventListener(ml,new int[] {127});
Sequence seq = new Sequence(Sequence.PPQ,4);
Track track = seq.createTrack();
int r = 0;
for(int i=0;i<60;i+=4){
r = (int)((Math.random()*50)+1);
track.add(makeEvent(144,1,r,100,i));
track.add(makeEvent(176,1,127,0,i));
track.add(makeEvent(128,1,r,100,i+2));
}
sequencer.setSequence(seq);
sequencer.start();
sequencer.setTempoInBPM(120);
}catch(Exception ex){ex.printStackTrace();}
}
public MidiEvent makeEvent(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 ex){ex.printStackTrace();}
return event;
}
class MyDrawPanel extends JPanel implements ControllerEventListener{
boolean msg = false;
public void controlChange(ShortMessage event){
msg = true;
repaint();
}
public void paintComponent(Graphics g){
if(msg){
Graphics2D g2 = (Graphics2D) g;
int r = (int)(Math.random()*250);
int gr = (int)(Math.random()*250);
int b = (int)(Math.random()*250);
g.setColor(new Color(r,gr,b));
int height = (int)((Math.random()*120)+10);
int width = (int)((Math.random()*120)+10);
int x = (int)((Math.random()*40)+10);
int y = (int)((Math.random()*40)+10);
g.fillRect(x,y, width, height);
msg=false;
}
}
}
}
