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51 lines
1.4 KiB
Objective-C
51 lines
1.4 KiB
Objective-C
//
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// ASRatioLayoutSpec.h
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// Texture
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//
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// Copyright (c) 2014-present, Facebook, Inc. All rights reserved.
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// This source code is licensed under the BSD-style license found in the
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// LICENSE file in the /ASDK-Licenses directory of this source tree. An additional
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// grant of patent rights can be found in the PATENTS file in the same directory.
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//
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// Modifications to this file made after 4/13/2017 are: Copyright (c) 2017-present,
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// Pinterest, Inc. Licensed under the Apache License, Version 2.0 (the "License");
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// you may not use this file except in compliance with the License.
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// You may obtain a copy of the License at
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//
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// 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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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, assign) CGFloat ratio;
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+ (instancetype)ratioLayoutSpecWithRatio:(CGFloat)ratio child:(id<ASLayoutElement>)child AS_WARN_UNUSED_RESULT;
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@end
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NS_ASSUME_NONNULL_END
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