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git-subtree-dir: submodules/AsyncDisplayKit git-subtree-mainline: d06f423e0ed3df1fed9bd10d79ee312a9179b632 git-subtree-split: 02bedc12816e251ad71777f9d2578329b6d2bef6
43 lines
1004 B
Objective-C
43 lines
1004 B
Objective-C
//
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// ASRatioLayoutSpec.h
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// Texture
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//
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// Copyright (c) Facebook, Inc. and its affiliates. All rights reserved.
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// Changes after 4/13/2017 are: Copyright (c) Pinterest, Inc. All rights reserved.
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// Licensed under Apache 2.0: http://www.apache.org/licenses/LICENSE-2.0
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//
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#import <AsyncDisplayKit/ASLayoutSpec.h>
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NS_ASSUME_NONNULL_BEGIN
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@protocol ASLayoutElement;
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/**
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Ratio layout spec
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For when the content should respect a certain inherent ratio but can be scaled (think photos or videos)
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The ratio passed is the ratio of height / width you expect
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For a ratio 0.5, the spec will have a flat rectangle shape
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_ _ _ _
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|_ _ _ _|
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For a ratio 2.0, the spec will be twice as tall as it is wide
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_ _
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**/
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@interface ASRatioLayoutSpec : ASLayoutSpec
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@property (nonatomic) CGFloat ratio;
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+ (instancetype)ratioLayoutSpecWithRatio:(CGFloat)ratio child:(id<ASLayoutElement>)child NS_RETURNS_RETAINED AS_WARN_UNUSED_RESULT;
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@end
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NS_ASSUME_NONNULL_END
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