didExceedMaxLines property Null safety
Whether any text was truncated or ellipsized.
If maxLines is not null, this is true if there were more lines to be drawn than the given maxLines, and thus at least one line was omitted in the output; otherwise it is false.
If maxLines is null, this is true if ellipsis is not the empty string
and there was a line that overflowed the maxWidth argument passed to
layout; otherwise it is false.
Valid only after layout has been called.
Implementation
bool get didExceedMaxLines {
assert(_debugAssertTextLayoutIsValid);
return _paragraph!.didExceedMaxLines;
}