drawVerticalText method

@override void drawVerticalText(dynamic canvas, dynamic textStyle, int gridRows)

Implementation

@override
void drawVerticalText(canvas, textStyle, int gridRows) {
  TextSpan span =
      TextSpan(text: "${NumberUtil.format(maxValue)}", style: textStyle);
  TextPainter tp = TextPainter(text: span, textDirection: TextDirection.ltr);
  tp.layout();
  tp.paint(
      canvas, Offset(chartRect.width - tp.width, chartRect.top - topPadding));
}