// bca07animatedBoxing - Animated pie shows time left.
// (c) Kimmo Karvinen & Tero Karvinen http://BotBook.com

package fi.sulautetut.android.animatedboxing;

import android.app.Activity;
import android.content.Context;
import android.graphics.Canvas;
import android.graphics.Color;
import android.graphics.Paint;
import android.graphics.RectF;
import android.os.Bundle;
import android.os.Handler;
import android.os.SystemClock;
import android.view.View;

public class AnimatedBoxing extends Activity {
       private Handler handler;
       private PieView tPie; 
       private long pieEnds;
       private long fightLen=10*1000; // ms
       private long pieStarted; // round or break, ms

       @Override
       public void onCreate(Bundle savedInstanceState) {
               super.onCreate(savedInstanceState);

               handler = new Handler();
               handler.removeCallbacks(update);
               handler.postDelayed(update, 50);

               tPie = new PieView(this);
               setContentView(tPie); 
       }

       private Runnable update = new Runnable() {
               public void run() {
                       long now=SystemClock.uptimeMillis();
                       if (pieEnds<now) {
                                       pieStarted=now;
                                       pieEnds=pieStarted+fightLen;
                       }
                       tPie.percent=
                         (float)(now-pieStarted)/(pieEnds-pieStarted); 
                       tPie.invalidate(); 
                       
                       handler.removeCallbacks(update);
                       handler.postDelayed(this, 50); // ms 
               }                                                                              
       };

       public class PieView extends View { 
               public float percent;
               public PieView(Context context) {
                       super(context);
               }

               public void onDraw(Canvas canvas) {
                       Paint paint = new Paint();
                       paint.setColor(Color.WHITE); 
                       RectF oval=new RectF(0, 0, 
                                            canvas.getWidth(), 
                                            canvas.getHeight());
                       canvas.drawArc(oval, 0, 360*percent, true, paint); 
               }
       };
}