ScannerPainter constructor Null safety

ScannerPainter(
  1. {double? hornStrokeWidth,
  2. double? scannerStrokeWidth,
  3. double? hornWidth,
  4. Color? scannerColor,
  5. Color? borderColor,
  6. Color? backgroundColor,
  7. Size? scannerSize,
  8. required double value}
)

Implementation

ScannerPainter({
  double? hornStrokeWidth,
  double? scannerStrokeWidth,
  double? hornWidth,
  Color? scannerColor,
  Color? borderColor,
  Color? backgroundColor,
  this.scannerSize,
  required this.value,
})  : scannerColor = scannerColor ?? Colors.white,
      borderColor = borderColor ?? Colors.white,
      backgroundColor = backgroundColor ?? Colors.black45,
      hornStrokeWidth = hornStrokeWidth ?? 4,
      hornWidth = hornWidth ?? 15,
      scannerStrokeWidth = scannerStrokeWidth ?? 2;