fitColumnHeader method
Implementation
void fitColumnHeader(int col) {
final hcd = horizontalHeaderCellData(col);
var txt = horizontalHeaderData(col);
var size = _textSize(txt, hcd.textStyleDefault);
hcd.width = size.width + 10;
for (int i = 0; i < rowCount(); i++) {
final index = Index(i, col);
final cd = cellData(index);
txt = data(index);
size = _textSize(txt, cd.textStyleDefault);
hcd.width = max(hcd.width, size.width + 10);
}
}