measure method

@override Size measure(Size maxSize)

Measures the total size required to render all children.

Skips absolutely positioned children since they don't contribute to the parent's flow layout dimensions.

Implementation

@override
Size measure(Size maxSize) {
  int totalHeight = 0;
  int maxWidth = 0;

  for (final child in _childrenInstance) {
    if (child.position.positionType == PositionType.absolute) continue;

    final childSize = child.measure(maxSize);
    totalHeight += childSize.height;
    maxWidth = max(childSize.width, maxWidth);
  }

  return Size(width: maxWidth, height: totalHeight);
}