performLayout method

@override void performLayout(Constraints constraints)

Called to perform the actual layout computation for this render object.

Implementation

@override
void performLayout(Constraints constraints) {
  int totalWidth = 0;
  for (final tab in _tabs) {
    final int textLen = stringWidth(tab.text ?? '');
    final int iconLen =
        (tab.icon != null) ? charWidth(tab.icon!.codeUnitAt(0)) : 0;
    final int contentLen = textLen + iconLen;
    totalWidth += labelPadding.left + contentLen + labelPadding.right;
  }
  if (_tabs.isNotEmpty && _tabs.length > 1) {
    totalWidth += _tabs.length - 1;
  }
  size = Size(totalWidth, 2);
}