com.unity.uiwidgets/com.unity.uiwidgets/Runtime/material2/bottom_sheet_theme.cs

using System;
using JetBrains.Annotations;
using Unity.UIWidgets.animation;
using Unity.UIWidgets.async2;
using Unity.UIWidgets.foundation;
using Unity.UIWidgets.gestures;
using Unity.UIWidgets.painting;
using Unity.UIWidgets.rendering;
using Unity.UIWidgets.service;
using Unity.UIWidgets.ui;
using Unity.UIWidgets.widgets;
using UnityEditor.Graphs;
using Brightness = Unity.UIWidgets.ui.Brightness;
using TextStyle = Unity.UIWidgets.painting.TextStyle;


namespace Unity.UIWidgets.material {
    public class BottomSheetThemeData : Diagnosticable, IEquatable<BottomSheetThemeData> {
        public BottomSheetThemeData(
            Color backgroundColor = null,
            float? elevation = null,
            Color modalBackgroundColor = null,
            float? modalElevation = null,
            ShapeBorder shape = null,
            Clip? clipBehavior = null
            ) {
            this.backgroundColor = backgroundColor;
            this.elevation = elevation;
            this.modalBackgroundColor = modalBackgroundColor;
            this.modalElevation = modalElevation;
            this.shape = shape;
            this.clipBehavior = clipBehavior;
        }

        public readonly  Color backgroundColor;
        public readonly  float? elevation;
        public readonly  Color modalBackgroundColor;
        public readonly  float? modalElevation;
        public readonly  ShapeBorder shape;
        public readonly  Clip? clipBehavior;
        
        public BottomSheetThemeData copyWith(
            Color backgroundColor = null,
            float? elevation = null,
            Color modalBackgroundColor = null,
            float? modalElevation = null,
            ShapeBorder shape = null,
            Clip? clipBehavior = null) {
            return new BottomSheetThemeData(
              backgroundColor: backgroundColor ?? this.backgroundColor,
              elevation: elevation ?? this.elevation,
              modalBackgroundColor: modalBackgroundColor ?? this.modalBackgroundColor,
              modalElevation: modalElevation ?? this.modalElevation,
              shape: shape ?? this.shape,
              clipBehavior: clipBehavior ?? this.clipBehavior
            );
        }
        public static BottomSheetThemeData lerp(BottomSheetThemeData a, BottomSheetThemeData b, float t) {
            D.assert(t != null);
            if (a == null && b == null)
              return null;
            return new BottomSheetThemeData(
              backgroundColor: Color.lerp(a?.backgroundColor, b?.backgroundColor, t),
              elevation: MathUtils.lerpFloat((float)a?.elevation.Value, (float)b?.elevation.Value, t),
              modalBackgroundColor: Color.lerp(a?.modalBackgroundColor, b?.modalBackgroundColor, t),
              modalElevation: MathUtils.lerpFloat((float)a?.modalElevation.Value, (float)b?.modalElevation.Value, t),
              shape: ShapeBorder.lerp(a?.shape, b?.shape, t),
              clipBehavior: t < 0.5 ? a?.clipBehavior : b?.clipBehavior
            );
        }
        public override void debugFillProperties(DiagnosticPropertiesBuilder properties) {
            base.debugFillProperties(properties);
            properties.add( new ColorProperty("backgroundColor", backgroundColor, defaultValue: null));
            properties.add( new FloatProperty("elevation", elevation, defaultValue: null));
            properties.add( new ColorProperty("modalBackgroundColor", modalBackgroundColor, defaultValue: null));
            properties.add( new FloatProperty("modalElevation", modalElevation, defaultValue: null));
            properties.add( new DiagnosticsProperty<ShapeBorder>("shape", shape, defaultValue: null));
            properties.add( new DiagnosticsProperty<Clip>("clipBehavior", clipBehavior.Value, defaultValue: null));
        }

        public bool Equals(BottomSheetThemeData other)
        {
            if (ReferenceEquals(null, other)) {
                return false;
            }

            if (ReferenceEquals(this, other)) {
                return true;
            }

            return Equals(backgroundColor, other.backgroundColor) 
                   && Nullable.Equals(elevation, other.elevation) 
                   && Equals(modalBackgroundColor, other.modalBackgroundColor) 
                   && Nullable.Equals(modalElevation, other.modalElevation) 
                   && Equals(shape, other.shape) 
                   && clipBehavior == other.clipBehavior;
        }

        public override bool Equals(object obj)
        {
            if (ReferenceEquals(null, obj)) {
                return false;
            }

            if (ReferenceEquals(this, obj)) {
                return true;
            }

            if (obj.GetType() != GetType()) {
                return false;
            }

            return Equals((BottomSheetThemeData) obj);
        }

        public override int GetHashCode()
        {
            unchecked
            {
                var hashCode = (backgroundColor != null ? backgroundColor.GetHashCode() : 0);
                hashCode = (hashCode * 397) ^ elevation.GetHashCode();
                hashCode = (hashCode * 397) ^ (modalBackgroundColor != null ? modalBackgroundColor.GetHashCode() : 0);
                hashCode = (hashCode * 397) ^ modalElevation.GetHashCode();
                hashCode = (hashCode * 397) ^ (shape != null ? shape.GetHashCode() : 0);
                hashCode = (hashCode * 397) ^ clipBehavior.GetHashCode();
                return hashCode;
            }
        }
    }

}