get method

TextPainter get(String text, TextStyle style, { double maxWidth = double.infinity, TextAlign align = TextAlign.left, })

Implementation

TextPainter get(
  String text,
  TextStyle style, {
  double maxWidth = double.infinity,
  TextAlign align = TextAlign.left,
}) {
  final safeMaxWidth = _safeTextLayoutMaxWidth(maxWidth);
  final key =
      '${text.length}:$text|${style.hashCode}|$safeMaxWidth|${align.index}';

  // LRU: move hit entry to end.
  if (_cache.containsKey(key)) {
    _hits++;
    final existing = _cache.remove(key)!;
    _cache[key] = existing;
    return existing;
  }

  _misses++;

  // Evict LRU (first) entry when full.
  if (_cache.length >= _maxSize) {
    _cache.remove(_cache.keys.first);
    _evictions++;
  }

  final painter = TextPainter(
    text: TextSpan(text: text, style: style),
    textDirection: TextDirection.ltr,
    textAlign: align,
  )..layout(maxWidth: safeMaxWidth);

  _cache[key] = painter;
  return painter;
}