Swiftgram/examples/LayoutSpecExamples-Swift/Sample/LayoutExampleNode+Layouts.swift
george-gw f22e1c2eb0 [LayoutSpecExamples] Added swift counterpart. (#2576)
* [LayoutSpecExamples] Added swift counterpart.

* Fixed copyright text.
2016-11-10 08:54:53 +09:00

94 lines
3.5 KiB
Swift

//
// LayoutExampleNode+Layouts.swift
// Sample
//
// Copyright (c) 2014-present, Facebook, Inc. All rights reserved.
// This source code is licensed under the BSD-style license found in the
// LICENSE file in the root directory of this source tree. An additional grant
// of patent rights can be found in the PATENTS file in the same directory.
//
// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
// IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
// FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
// FACEBOOK BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN
// ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
// CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
//
import AsyncDisplayKit
extension HeaderWithRightAndLeftItems {
override func layoutSpecThatFits(_ constrainedSize: ASSizeRange) -> ASLayoutSpec {
let nameLocationStack = ASStackLayoutSpec.vertical()
nameLocationStack.style.flexShrink = 1.0
nameLocationStack.style.flexGrow = 1.0
if postLocationNode.attributedText != nil {
nameLocationStack.children = [userNameNode, postLocationNode]
} else {
nameLocationStack.children = [userNameNode]
}
let headerStackSpec = ASStackLayoutSpec(direction: .horizontal,
spacing: 40,
justifyContent: .start,
alignItems: .center,
children: [nameLocationStack, postTimeNode])
return ASInsetLayoutSpec(insets: UIEdgeInsets(top: 0, left: 10, bottom: 0, right: 10), child: headerStackSpec)
}
}
extension PhotoWithInsetTextOverlay {
override func layoutSpecThatFits(_ constrainedSize: ASSizeRange) -> ASLayoutSpec {
let photoDimension: CGFloat = constrainedSize.max.width / 4.0
photoNode.style.preferredSize = CGSize(width: photoDimension, height: photoDimension)
// INFINITY is used to make the inset unbounded
let insets = UIEdgeInsets(top: CGFloat.infinity, left: 12, bottom: 12, right: 12)
let textInsetSpec = ASInsetLayoutSpec(insets: insets, child: titleNode)
return ASOverlayLayoutSpec(child: photoNode, overlay: textInsetSpec)
}
}
extension PhotoWithOutsetIconOverlay {
override func layoutSpecThatFits(_ constrainedSize: ASSizeRange) -> ASLayoutSpec {
iconNode.style.preferredSize = CGSize(width: 40, height: 40);
iconNode.style.layoutPosition = CGPoint(x: 150, y: 0);
photoNode.style.preferredSize = CGSize(width: 150, height: 150);
photoNode.style.layoutPosition = CGPoint(x: 40 / 2.0, y: 40 / 2.0);
let absoluteSpec = ASAbsoluteLayoutSpec(children: [photoNode, iconNode])
// ASAbsoluteLayoutSpec's .sizing property recreates the behavior of ASDK Layout API 1.0's "ASStaticLayoutSpec"
absoluteSpec.sizing = .sizeToFit
return absoluteSpec;
}
}
extension FlexibleSeparatorSurroundingContent {
override func layoutSpecThatFits(_ constrainedSize: ASSizeRange) -> ASLayoutSpec {
topSeparator.style.flexGrow = 1.0
bottomSeparator.style.flexGrow = 1.0
textNode.style.alignSelf = .center
let verticalStackSpec = ASStackLayoutSpec.vertical()
verticalStackSpec.spacing = 20
verticalStackSpec.justifyContent = .center
verticalStackSpec.children = [topSeparator, textNode, bottomSeparator]
return ASInsetLayoutSpec(insets:UIEdgeInsets(top: 60, left: 0, bottom: 60, right: 0), child: verticalStackSpec)
}
}