getHeight method
      
  
double
getHeight(
    
- int index,
- int count,
- double width,
- double height,
- double fontHeight,
- double textPadding,
- bool drawText,
override
    Get the bar height for a specific index
Implementation
@override
double getHeight(
  int index,
  int count,
  double width,
  double height,
  double fontHeight,
  double textPadding,
  bool drawText,
) {
  return super.getHeight(
        index,
        count,
        width,
        height,
        fontHeight,
        textPadding,
        drawText,
      ) -
      (drawBorder ? _getBorderWidth(width) : 0);
}