rowAt method

int rowAt(
  1. double offset
)

Row containing offset, clamped to the addressable rows.

Implementation

int rowAt(double offset) {
  if (length == 0) return 0;
  var low = 0, high = length - 1;
  while (low < high) {
    final middle = (low + high + 1) ~/ 2;
    if (offsetFor(middle) <= offset) {
      low = middle;
    } else {
      high = middle - 1;
    }
  }
  return low;
}