Alex.k
72 lines
1.9 KiB
Swift
72 lines
1.9 KiB
Swift
//
|
|
// CollectionViewStackCell.swift
|
|
// NavigationStackDemo
|
|
//
|
|
// Created by Alex K. on 24/02/16.
|
|
// Copyright © 2016 Alex K. All rights reserved.
|
|
//
|
|
|
|
import UIKit
|
|
|
|
// MARK: CollectionViewStackCell
|
|
|
|
class CollectionViewStackCell: UICollectionViewCell {
|
|
|
|
internal var imageView: UIImageView?
|
|
|
|
override init(frame: CGRect) {
|
|
super.init(frame: frame)
|
|
imageView = createImageView()
|
|
createShadow()
|
|
}
|
|
|
|
required init?(coder aDecoder: NSCoder) {
|
|
fatalError("init(coder:) has not been implemented")
|
|
}
|
|
|
|
internal override func prepareForReuse() {
|
|
imageView?.image = nil
|
|
}
|
|
}
|
|
|
|
// MARK: configure
|
|
|
|
extension CollectionViewStackCell {
|
|
|
|
private func createImageView() -> UIImageView {
|
|
|
|
let imageView = UIImageView(frame: CGRect.zero)
|
|
imageView.translatesAutoresizingMaskIntoConstraints = false
|
|
contentView.addSubview(imageView)
|
|
|
|
contentView.addConstraints([
|
|
createConstraint(imageView, toItem: contentView, attribute: .Top),
|
|
createConstraint(imageView, toItem: contentView, attribute: .Bottom),
|
|
createConstraint(imageView, toItem: contentView, attribute: .Left),
|
|
createConstraint(imageView, toItem: contentView, attribute: .Right),
|
|
])
|
|
|
|
return imageView
|
|
}
|
|
|
|
private func createConstraint(item: UIImageView, toItem: UIView, attribute: NSLayoutAttribute) -> NSLayoutConstraint {
|
|
return NSLayoutConstraint(item: item,
|
|
attribute: attribute,
|
|
relatedBy: .Equal,
|
|
toItem: toItem,
|
|
attribute: attribute,
|
|
multiplier: 1,
|
|
constant: 0)
|
|
}
|
|
|
|
private func createShadow() {
|
|
layer.masksToBounds = false;
|
|
layer.shadowOpacity = 0.30;
|
|
layer.shadowRadius = 10.0;
|
|
layer.shadowOffset = CGSize.zero;
|
|
layer.shadowPath = UIBezierPath(rect: bounds).CGPath
|
|
layer.shouldRasterize = true;
|
|
}
|
|
|
|
}
|