flutter-Text 以字符的方式截断

/// How overflowing text should be handled.
///
/// A [TextOverflow] can be passed to [Text] and [RichText] via their
/// [Text.overflow] and [RichText.overflow] properties respectively.
enum TextOverflow {
  /// Clip the overflowing text to fix its container.
  clip,
  /// Fade the overflowing text to transparent.
  fade,
  /// Use an ellipsis to indicate that the text has overflowed.
  ellipsis,
  /// Render overflowing text outside of its container.
  visible,
}

extension TextOverflowUtil on String {
  /// 将flutter系统默认的单词截断模式转换成字符截断模式
  /// 通过向文本中插入宽度为0的空格实现
  static String toCharacterBreakStr(String word) {
    if (word == null || word.isEmpty) {
      return word;
    }
    String breakWord = '';
    word.runes.forEach((element) {
      breakWord += String.fromCharCode(element);
      breakWord += '\u200B';
    });
    return breakWord;
  }
}