library elevation_extension; import 'package:flutter/material.dart'; import 'package:flutter/cupertino.dart'; extension ElevationExtension on BoxDecoration { BoxDecoration copyWith({ Color? color, DecorationImage? image, BoxBorder? border, BorderRadiusGeometry? borderRadius, List? boxShadow, Gradient? gradient, BlendMode? backgroundBlendMode, BoxShape? shape, }) { return BoxDecoration( color: color ?? this.color, image: image ?? this.image, border: border ?? this.border, borderRadius: borderRadius ?? this.borderRadius, boxShadow: this.boxShadow != null || boxShadow != null ? [...this.boxShadow ?? [], ...boxShadow ?? []] : null, gradient: gradient ?? this.gradient, backgroundBlendMode: backgroundBlendMode ?? this.backgroundBlendMode, shape: shape ?? this.shape, ); } }