Swiftgram/submodules/AsyncDisplayKit/Source/ASBackgroundLayoutSpec.h
2019-11-11 16:39:27 +04:00

35 lines
1.0 KiB
Objective-C

//
// ASBackgroundLayoutSpec.h
// Texture
//
// Copyright (c) Facebook, Inc. and its affiliates. All rights reserved.
// Changes after 4/13/2017 are: Copyright (c) Pinterest, Inc. All rights reserved.
// Licensed under Apache 2.0: http://www.apache.org/licenses/LICENSE-2.0
//
#import <AsyncDisplayKit/ASLayoutSpec.h>
NS_ASSUME_NONNULL_BEGIN
/**
Lays out a single layoutElement child, then lays out a background layoutElement instance behind it stretched to its size.
*/
@interface ASBackgroundLayoutSpec : ASLayoutSpec
/**
* Background layoutElement for this layout spec
*/
@property (nonatomic) id<ASLayoutElement> background;
/**
* Creates and returns an ASBackgroundLayoutSpec object
*
* @param child A child that is laid out to determine the size of this spec.
* @param background A layoutElement object that is laid out behind the child.
*/
+ (instancetype)backgroundLayoutSpecWithChild:(id<ASLayoutElement>)child background:(id<ASLayoutElement>)background NS_RETURNS_RETAINED AS_WARN_UNUSED_RESULT;
@end
NS_ASSUME_NONNULL_END