components/Shadow/src/MDCShadow.m

// Copyright 2021-present the Material Components for iOS authors. All Rights Reserved.
//
// Licensed under the Apache License, Version 2.0 (the "License");
// you may not use this file except in compliance with the License.
// You may obtain a copy of the License at
//
// http://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS,
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
// See the License for the specific language governing permissions and
// limitations under the License.

#import "MDCShadow.h"

NS_ASSUME_NONNULL_BEGIN

@implementation MDCShadow

- (instancetype)initWithColor:(UIColor *)color
                      opacity:(CGFloat)opacity
                       radius:(CGFloat)radius
                       offset:(CGSize)offset
                       spread:(CGFloat)spread {
  self = [super init];
  if (self) {
    _color = color;
    _opacity = opacity;
    _radius = radius;
    _offset = offset;
    _spread = spread;
  }
  return self;
}

- (BOOL)isEqual:(id)other {
  if (self == other) {
    return YES;
  }
  if (![other isKindOfClass:[MDCShadow class]]) {
    return NO;
  }
  MDCShadow *otherShadow = other;
  return [_color isEqual:otherShadow.color] && _opacity == otherShadow.opacity &&
         _radius == otherShadow.radius && CGSizeEqualToSize(_offset, otherShadow.offset) &&
         _spread == otherShadow.spread;
}

- (NSUInteger)hash {
  const NSUInteger kPrime = 31;
  NSUInteger result = 1;
  result = result * kPrime + (NSUInteger)(_color.hash);
  result = result * kPrime + (NSUInteger)_opacity;
  result = result * kPrime + (NSUInteger)_radius;
  result = result * kPrime + (NSUInteger)(_offset.width);
  result = result * kPrime + (NSUInteger)(_offset.height);
  result = result * kPrime + (NSUInteger)_spread;
  return result;
}

@end

@implementation MDCShadowBuilder

- (MDCShadow *)build {
  return [[MDCShadow alloc] initWithColor:self.color
                                  opacity:self.opacity
                                   radius:self.radius
                                   offset:self.offset
                                   spread:self.spread];
}

+ (MDCShadowBuilder *)builderWithColor:(UIColor *)color
                               opacity:(CGFloat)opacity
                                radius:(CGFloat)radius
                                offset:(CGSize)offset {
  MDCShadowBuilder *builder = [[MDCShadowBuilder alloc] init];
  builder.color = color;
  builder.opacity = opacity;
  builder.radius = radius;
  builder.offset = offset;
  builder.spread = 0.0f;
  return builder;
}

+ (MDCShadowBuilder *)builderWithColor:(UIColor *)color
                               opacity:(CGFloat)opacity
                                radius:(CGFloat)radius
                                offset:(CGSize)offset
                                spread:(CGFloat)spread {
  MDCShadowBuilder *builder = [[MDCShadowBuilder alloc] init];
  builder.color = color;
  builder.opacity = opacity;
  builder.radius = radius;
  builder.offset = offset;
  builder.spread = spread;
  return builder;
}

@end

NS_ASSUME_NONNULL_END