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62 lines
2.5 KiB
Objective-C
62 lines
2.5 KiB
Objective-C
//
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// ASCollectionLayoutState.m
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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/ASCollectionLayoutState.h>
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#import <AsyncDisplayKit/ASAssert.h>
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#import <AsyncDisplayKit/ASCellNode+Internal.h>
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#import <AsyncDisplayKit/ASCollectionElement.h>
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#import <AsyncDisplayKit/ASElementMap.h>
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#import <AsyncDisplayKit/ASLayout.h>
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@implementation ASCollectionLayoutState
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- (instancetype)initWithElements:(ASElementMap *)elements layout:(ASLayout *)layout
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{
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NSMapTable<ASCollectionElement *, UICollectionViewLayoutAttributes *> *attrsMap = [NSMapTable mapTableWithKeyOptions:(NSMapTableObjectPointerPersonality | NSMapTableWeakMemory) valueOptions:NSMapTableStrongMemory];
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for (ASLayout *sublayout in layout.sublayouts) {
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ASCollectionElement *element = ((ASCellNode *)sublayout.layoutElement).collectionElement;
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NSIndexPath *indexPath = [elements indexPathForElement:element];
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NSString *supplementaryElementKind = element.supplementaryElementKind;
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UICollectionViewLayoutAttributes *attrs;
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if (supplementaryElementKind == nil) {
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attrs = [UICollectionViewLayoutAttributes layoutAttributesForCellWithIndexPath:indexPath];
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} else {
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attrs = [UICollectionViewLayoutAttributes layoutAttributesForSupplementaryViewOfKind:supplementaryElementKind withIndexPath:indexPath];
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}
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attrs.frame = sublayout.frame;
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[attrsMap setObject:attrs forKey:element];
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}
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return [self initWithElements:elements contentSize:layout.size elementToLayoutArrtibutesMap:attrsMap];
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}
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- (instancetype)initWithElements:(ASElementMap *)elements contentSize:(CGSize)contentSize elementToLayoutArrtibutesMap:(NSMapTable<ASCollectionElement *,UICollectionViewLayoutAttributes *> *)attrsMap
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{
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self = [super init];
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if (self) {
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_elements = elements;
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_contentSize = contentSize;
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_elementToLayoutArrtibutesMap = attrsMap;
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}
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return self;
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}
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@end
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