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* [License] Simplify the Texture license to be pure Apache 2 (removing ASDK-Licenses) With permission of the Facebook Open Source team, we are simplifying the Texture license so that clients can rely on the Apache 2 terms that most of Texture is already covered by. This means that code originally forked from AsyncDisplayKit will be re-licensed from "BSD 3-clause + PATENTS v2" to Apache 2 without a PATENTS file. After getting confirmation that the updates to these core files look good, we'll propagate this new license header to all files (in this same PR) and get sign-off from all parties before landing. * [License] Update all Texture source files to be pure Apache 2. * Changelog entry for Apache 2 license update. * Revert "[License] Update all Texture source files to be pure Apache 2." This reverts commit ffa0fbbba9717d871dd16c4b07539f2f8208fc2b. * [License] Update all Texture source files to be pure Apache 2, maintaining copyrights. * [License] Update CONTRIBUTING, README, Podspec & Dangerfile.
106 lines
3.0 KiB
Plaintext
106 lines
3.0 KiB
Plaintext
//
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// HorizontalScrollCellNode.mm
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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 "HorizontalScrollCellNode.h"
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#import "RandomCoreGraphicsNode.h"
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#import "AppDelegate.h"
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#import <AsyncDisplayKit/ASDisplayNode+Subclasses.h>
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#import <AsyncDisplayKit/ASStackLayoutSpec.h>
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#import <AsyncDisplayKit/ASInsetLayoutSpec.h>
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static const CGFloat kOuterPadding = 16.0f;
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static const CGFloat kInnerPadding = 10.0f;
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@interface HorizontalScrollCellNode ()
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{
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ASCollectionNode *_collectionNode;
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CGSize _elementSize;
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ASDisplayNode *_divider;
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}
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@end
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@implementation HorizontalScrollCellNode
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#pragma mark - Lifecycle
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- (instancetype)initWithElementSize:(CGSize)size
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{
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if (!(self = [super init]))
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return nil;
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_elementSize = size;
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// the containing table uses -nodeForRowAtIndexPath (rather than -nodeBlockForRowAtIndexPath),
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// so this init method will always be run on the main thread (thus it is safe to do UIKit things).
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UICollectionViewFlowLayout *flowLayout = [[UICollectionViewFlowLayout alloc] init];
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flowLayout.scrollDirection = UICollectionViewScrollDirectionHorizontal;
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flowLayout.itemSize = _elementSize;
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flowLayout.minimumInteritemSpacing = kInnerPadding;
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_collectionNode = [[ASCollectionNode alloc] initWithCollectionViewLayout:flowLayout];
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_collectionNode.delegate = self;
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_collectionNode.dataSource = self;
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[self addSubnode:_collectionNode];
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// hairline cell separator
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_divider = [[ASDisplayNode alloc] init];
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_divider.backgroundColor = [UIColor lightGrayColor];
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[self addSubnode:_divider];
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return self;
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}
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// With box model, you don't need to override this method, unless you want to add custom logic.
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- (void)layout
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{
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[super layout];
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_collectionNode.view.contentInset = UIEdgeInsetsMake(0.0, kOuterPadding, 0.0, kOuterPadding);
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// Manually layout the divider.
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CGFloat pixelHeight = 1.0f / [[UIScreen mainScreen] scale];
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_divider.frame = CGRectMake(0.0f, 0.0f, self.calculatedSize.width, pixelHeight);
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}
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- (ASLayoutSpec *)layoutSpecThatFits:(ASSizeRange)constrainedSize
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{
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CGSize collectionNodeSize = CGSizeMake(constrainedSize.max.width, _elementSize.height);
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_collectionNode.style.preferredSize = collectionNodeSize;
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ASInsetLayoutSpec *insetSpec = [[ASInsetLayoutSpec alloc] init];
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insetSpec.insets = UIEdgeInsetsMake(kOuterPadding, 0.0, kOuterPadding, 0.0);
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insetSpec.child = _collectionNode;
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return insetSpec;
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}
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#pragma mark - ASCollectionNode
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- (NSInteger)collectionNode:(ASCollectionNode *)collectionNode numberOfItemsInSection:(NSInteger)section
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{
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return 5;
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}
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- (ASCellNodeBlock)collectionNode:(ASCollectionNode *)collectionNode nodeBlockForItemAtIndexPath:(NSIndexPath *)indexPath
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{
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CGSize elementSize = _elementSize;
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return ^{
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RandomCoreGraphicsNode *elementNode = [[RandomCoreGraphicsNode alloc] init];
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elementNode.style.preferredSize = elementSize;
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return elementNode;
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};
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}
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@end
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