drawHourText.dart

void _drawHourText({required Canvas canvas, required int minute, required double theta}) {
    final double fontSize = 12.0;
    TextSpan span =
        new TextSpan(style: new TextStyle(color: Colors.white, fontSize: fontSize), text: (minute ~/ 5).toString());
    TextPainter tp = new TextPainter(
      text: span,
      textAlign: TextAlign.center,
      textDirection: TextDirection.ltr,
    );
    tp.layout();
    final Offset _pointToPositionText =
        GetOffset.getOffsetWithRadiusAndTheta(radius: _getInnerPointRadiusOfMinuteLine(minute) - 12, theta: theta);
    tp.paint(canvas, Offset(_pointToPositionText.dx - tp.width / 2, _pointToPositionText.dy - tp.height / 2));
  }