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* Add ASCollectionGalleryLayoutSizeProviding - This allows users to return different sizes based on certain conditions, such as the collection node's bounds or grid constants. - ASPagerNode will also act as a size provider to ensure all pages have an up-to-date size that is its bounds. * Update CHANGELOG * ASPagerNode to use gallery layout delegate if told to
52 lines
1.3 KiB
Objective-C
52 lines
1.3 KiB
Objective-C
//
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// ASCollectionGalleryLayoutDelegate.h
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// Texture
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//
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// Copyright (c) 2017-present, Pinterest, Inc. All rights reserved.
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// 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/ASCollectionLayoutDelegate.h>
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#import <AsyncDisplayKit/ASScrollDirection.h>
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@class ASElementMap;
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NS_ASSUME_NONNULL_BEGIN
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@protocol ASCollectionGalleryLayoutSizeProviding <NSObject>
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/**
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* Returns the fixed size of each and every element.
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*
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* @discussion This method will only be called on main thread.
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*
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* @param elements All elements to be sized.
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*
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* @return The elements' size
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*/
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- (CGSize)sizeForElements:(ASElementMap *)elements;
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@end
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/**
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* A thread-safe layout delegate that arranges items with the same size into a flow layout.
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*
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* @note Supplemenraty elements are not supported.
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*/
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AS_SUBCLASSING_RESTRICTED
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@interface ASCollectionGalleryLayoutDelegate : NSObject <ASCollectionLayoutDelegate>
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@property (nonatomic, weak) id<ASCollectionGalleryLayoutSizeProviding> sizeProvider;
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- (instancetype)initWithScrollableDirections:(ASScrollDirection)scrollableDirections NS_DESIGNATED_INITIALIZER;
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- (instancetype)init __unavailable;
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@end
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NS_ASSUME_NONNULL_END
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