// DrawEx5 Example
// Source Code File: MyView.java

package it372.drawex5;
import android.annotation.SuppressLint;
import android.content.Context;
import android.graphics.Canvas;
import android.graphics.Color;
import android.graphics.Paint;
import android.view.MotionEvent;
import android.view.View;

import java.util.ArrayList;

public class MyView extends View {
    public ArrayList<Point> points;

    public MyView(Context context) {
        super(context);
        points = new ArrayList<Point>( );
        this.setBackgroundColor(
            Color.parseColor("#FFE0E0FF"));
        this.setOnTouchListener(new View.OnTouchListener( ) {
            @SuppressLint("ClickableViewAccessibility")
            @Override
            public boolean onTouch(View v, MotionEvent e) {
                if (e.getAction( ) == MotionEvent.ACTION_UP) {
                    int x = (int) e.getX( );
                    int y = (int) e.getY( );
                    points.add(new Point(x, y));
                    MyView.this.invalidate( );
                }
                // System.out.println("x=" + x + " y=" + y);
                return true;
            }
        });
    }

    @Override
    public boolean performClick( ) {
        super.performClick( );
        return true;
    }

    public void reset( ) {
        points.clear( );
        this.invalidate( );
    }

    @Override
    public void onDraw(Canvas c) {
        // Draw red circles at all touch down points.
        Paint paint = new Paint( );
        paint.setColor(Color.RED);
        for (Point p : points) {
            c.drawCircle(p.getX( ),
                    p.getY( ), 30, paint);
        }
    }
}