Swiftgram/AsyncDisplayKit/Layout/ASBackgroundLayoutSpec.h

28 lines
975 B
Objective-C

/*
* Copyright (c) 2014-present, Facebook, Inc.
* All rights reserved.
*
* This source code is licensed under the BSD-style license found in the
* LICENSE file in the root directory of this source tree. An additional grant
* of patent rights can be found in the PATENTS file in the same directory.
*
*/
#import <AsyncDisplayKit/ASLayoutSpec.h>
/**
Lays out a single layoutable child, then lays out a background layoutable instance behind it stretched to its size.
*/
@interface ASBackgroundLayoutSpec : ASLayoutSpec
@property (nonatomic, strong) id<ASLayoutable> background;
/**
@param child A child that is laid out to determine the size of this spec. If this is nil, then this method
returns nil.
@param background A layoutable object that is laid out behind the child. May be nil, in which case the background is omitted.
*/
+ (instancetype)backgroundLayoutSpecWithChild:(id<ASLayoutable>)child background:(id<ASLayoutable>)background;
@end