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67 lines
2.2 KiB
Objective-C
67 lines
2.2 KiB
Objective-C
//
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// DetailCellNode.m
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// Sample
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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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// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
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// IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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// FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
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// FACEBOOK BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN
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// ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
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// CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
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//
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#import "DetailCellNode.h"
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#import <AsyncDisplayKit/AsyncDisplayKit.h>
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@implementation DetailCellNode
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#pragma mark - Lifecycle
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- (instancetype)init
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{
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self = [super init];
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if (self == nil) { return self; }
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_imageNode = [[ASNetworkImageNode alloc] init];
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_imageNode.backgroundColor = ASDisplayNodeDefaultPlaceholderColor();
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[self addSubnode:_imageNode];
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return self;
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}
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#pragma mark - ASDisplayNode
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- (ASLayoutSpec *)layoutSpecThatFits:(ASSizeRange)constrainedSize
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{
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self.imageNode.position = CGPointZero;
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self.imageNode.sizeRange = ASRelativeSizeRangeMakeWithExactCGSize(constrainedSize.max);
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return [ASStaticLayoutSpec staticLayoutSpecWithChildren:@[self.imageNode]];
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}
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- (void)layoutDidFinish
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{
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[super layoutDidFinish];
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// In general set URL of ASNetworkImageNode as soon as possible. Ideally in init or a
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// view model setter method.
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// In this case as we need to know the size of the node the url is set in layoutDidFinish so
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// we have the calculatedSize available
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self.imageNode.URL = [self imageURL];
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}
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#pragma mark - Image
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- (NSURL *)imageURL
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{
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CGSize imageSize = self.calculatedSize;
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NSString *imageURLString = [NSString stringWithFormat:@"http://lorempixel.com/%ld/%ld/%@/%ld", (NSInteger)imageSize.width, (NSInteger)imageSize.height, self.imageCategory, self.row];
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return [NSURL URLWithString:imageURLString];
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}
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@end
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