calculateSize method

@override Size calculateSize(int count)

Calculates the size of canvas based on dots count, size and spacing

Implementers can override this function to calculate their own size

Implementation

@override
Size calculateSize(int count) {
  return Size(
    dotWidth * count + (spacing * (count - 1)),
    max(dotHeight, dotHeight * jumpScale) + verticalOffset.abs(),
  );
}