class CircularProgressDrawable extends Drawable implements Animatable {

    @Override
    public void draw(Canvas canvas) {
        final Rect bounds = getBounds();
        canvas.save();
        canvas.rotate(mRotation, bounds.exactCenterX(), bounds.exactCenterY());
        mRing.draw(canvas, bounds);
        canvas.restore();
    }

    public  CircularProgressDrawable(@NonNull Context context);

}