mart/ev3/ex1/nl/ru/des/LCDPrinter.java

   1 package nl.ru.des;
   2
   3 import java.util.LinkedList;
   4 import java.util.Queue;
   5
   6 import lejos.hardware.lcd.LCD;
   7 import lejos.utility.Delay;
   8
   9 public class LCDPrinter extends Thread{
  10         public static final int PRINTDELAY = 250;
  11
  12         private static Queue<String> buffer = new LinkedList<String>();
  13         private static boolean shutdown = false;
  14
  15         public static void print(String s){
  16                 buffer.add(s);
  17         }
  18
  19         public void run(){
  20                 int y = 0;
  21                 while(!shutdown || (shutdown && !buffer.isEmpty())){
  22                         if(!buffer.isEmpty()){
  23                                 LCD.clear(y);
  24                                 LCD.clear(Math.max(0, y+1));
  25                                 LCD.drawString(buffer.remove(), 0, y);
  26                                 y = y < LCD.DISPLAY_CHAR_DEPTH-1 ? y + 1 : 0;
  27                         }
  28                         Delay.msDelay(PRINTDELAY);
  29                 }
  30         }
  31
  32         public static void shutdown(String s) {
  33                 buffer.add(s);
  34                 shutdown = true;
  35                 while(!buffer.isEmpty()){
  36                         Delay.msDelay(200);
  37                 }
  38         }
  39 }