fis_lib_report/lib/converts/text_size_converter.dart

import 'package:flutter/cupertino.dart';

class TextSizeConvert {
  ///计算文本Size
  static Size getTextSize(String text, TextStyle style,
      {int maxLines = 2 ^ 31, double maxWidth = double.infinity}) {
    if (text.isEmpty) {
      return Size.zero;
    }
    final TextPainter textPainter = TextPainter(
        textDirection: TextDirection.ltr,
        text: TextSpan(text: text, style: style),
        maxLines: maxLines)
      ..layout(maxWidth: maxWidth);
    return textPainter.size;
  }

  static double paintWidthWithTextStyle(TextStyle style, String text) {
    final TextPainter textPainter = TextPainter(
        text: TextSpan(text: text, style: style),
        maxLines: 1,
        textDirection: TextDirection.ltr)
      ..layout(minWidth: 0, maxWidth: double.infinity);
    return textPainter.size.width;
  }
}