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91734ea979
* new Swift example * removed asyncDataSource and asyncDelegate. Also using collectionNode methods instead of collectionView * Fixing the folder structure * Updated with @george-gw feedback. Thanks George.
52 lines
1.8 KiB
Swift
52 lines
1.8 KiB
Swift
//
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// ImageCellNode.swift
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// Sample
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//
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// Created by Rajeev Gupta on 11/9/16.
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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 UIKit
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import AsyncDisplayKit
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class ImageCellNode: ASCellNode {
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let imageNode = ASImageNode()
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required init(with image : UIImage) {
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super.init()
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imageNode.image = image
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self.addSubnode(self.imageNode)
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}
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override func layoutSpecThatFits(_ constrainedSize: ASSizeRange) -> ASLayoutSpec {
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let imageSize = imageNode.image?.size
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print("imageNode= \(imageNode.bounds), image=\(imageSize)")
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var imageRatio: CGFloat = 0.5
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if imageNode.image != nil {
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imageRatio = (imageNode.image?.size.height)! / (imageNode.image?.size.width)!
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}
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let imagePlace = ASRatioLayoutSpec(ratio: imageRatio, child: imageNode)
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let stackLayout = ASStackLayoutSpec.horizontal()
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stackLayout.justifyContent = .start
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stackLayout.alignItems = .start
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stackLayout.style.flexShrink = 1.0
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stackLayout.children = [imagePlace]
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return ASInsetLayoutSpec(insets: UIEdgeInsets.zero, child: stackLayout)
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}
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}
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