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56 lines
2.8 KiB
Objective-C
56 lines
2.8 KiB
Objective-C
//
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// ASTraitCollection.h
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// AsyncDisplayKit
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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 root directory of this source tree. An additional grant
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// of patent rights can be found in the PATENTS file in the same directory.
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//
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#import <UIKit/UIKit.h>
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#import <AsyncDisplayKit/ASEnvironment.h>
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@interface ASTraitCollection : NSObject
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@property (nonatomic, assign, readonly) CGFloat displayScale;
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@property (nonatomic, assign, readonly) UIUserInterfaceSizeClass horizontalSizeClass;
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@property (nonatomic, assign, readonly) UIUserInterfaceIdiom userInterfaceIdiom;
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@property (nonatomic, assign, readonly) UIUserInterfaceSizeClass verticalSizeClass;
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@property (nonatomic, assign, readonly) UIForceTouchCapability forceTouchCapability;
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/**
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* An optional context to pass along with an ASTraitCollection.
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* This can be used to pass any internal state to all subnodes via the ASTraitCollection that is not
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* included in UITraitCollection. This could range from more fine-tuned size classes to a class of
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* constants that is based upon the new trait collection.
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*
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* Be aware that internally this context is held by a C struct which cannot retain the pointer.
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* ASTraitCollection is generally a very short-lived class, existing only to provide a non-struct API
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* to trait collections. When an ASTraitCollection is returned via one of ASViewController's 2
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* custom trait collection creation blocks, traitCollectionContext is assigned to the VC's traitCollectionContext.
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* This makes sure that the VC is the owner of the context and ASEnvironmentTraitCollections will not
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* have a reference to a dangling pointer.
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*/
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@property (nonatomic, strong, readonly) id traitCollectionContext;
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+ (ASTraitCollection *)traitCollectionWithASEnvironmentTraitCollection:(ASEnvironmentTraitCollection)traits;
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+ (ASTraitCollection *)traitCollectionWithUITraitCollection:(UITraitCollection *)traitCollection
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traitCollectionContext:(id)traitCollectionContext;
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+ (ASTraitCollection *)traitCollectionWithDisplayScale:(CGFloat)displayScale
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userInterfaceIdiom:(UIUserInterfaceIdiom)userInterfaceIdiom
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horizontalSizeClass:(UIUserInterfaceSizeClass)horizontalSizeClass
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verticalSizeClass:(UIUserInterfaceSizeClass)verticalSizeClass
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forceTouchCapability:(UIForceTouchCapability)forceTouchCapability
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traitCollectionContext:(id)traitCollectionContext;
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- (ASEnvironmentTraitCollection)environmentTraitCollection;
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- (BOOL)isEqualToTraitCollection:(ASTraitCollection *)traitCollection;
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@end
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