LIST 79

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import java.awt.*;
import java.applet.*;
import java.lang.*;
import java.io.*;

public class miditx extends Applet implements Runnable{
    int py[],oy[],data[],flag,channel;
    Graphics g;
    private Thread flow;
    Font font;

    public void init(){
	channel = 8;
	system_initial();
    }

    public void run(){
	try {
		while(true){
		        Thread.sleep(100);
		        input_check();
		        if( flag != 0 ){
			midi_transmit();
			repaint();
		        }
		}
	}
	catch(Exception e) {}
    }

    public void start(){
	flow = new Thread(this);
	flow.start();
    }

    public void stop(){
	flow.stop();
    }

    public boolean mouseDrag(Event e, int x, int y){
	event_check(x,y);
	return true;
    }

    public boolean mouseDown(Event e, int x, int y){
	event_check(x,y);
	return true;
    }

    void event_check(int x, int y){
	int z;
	for(int i=0;i<channel;i++){
		z = 40 + 40*i;
		if( (x>z-10) && (z+10>x) && (9<y) && (191>y) ){
			oy[i] = py[i]; py[i] = y;
			flag++;
		}
	}
    }

    void input_check(){
	/* dummy */
    }

    void midi_transmit(){
	/* dummy */
    }

    public void paint(Graphics g){
	int z;
	flag = 0;
	for(int i=0;i<channel;i++){
		z = 40+40*i;
		g.setColor(Color.black);
		g.fillRect(z-10,oy[i]-5,20,10);
		g.setColor(Color.yellow);
		g.fillRect(z-1,10,2,180);
		g.setColor(Color.green);
		g.fillRect(z-10,py[i]-5,20,10);
		g.setColor(Color.blue);
		g.fillRect(z-8,py[i]-3,16,6);
		data[i] = (190-py[i])*127/180;
	        g.setColor(Color.white);
	        g.setFont(font);
	        String word = "Data(" + String.valueOf(i+1) + ") = " + String.valueOf(data[i]);
	        g.drawString(word, 355, 30+22*i);
	}
    }

    void system_initial(){
        setBackground(Color.black);
        font = new java.awt.Font("TimesRoman", Font.PLAIN, 16);
	py = new int[channel]; oy = new int[channel]; data = new int[channel];
	for(int i=0;i<channel;i++) py[i] = 190;
	flag = 0;
    }

}

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