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Copy pathViewController.swift
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Copy pathViewController.swift
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81 lines (59 loc) · 2.42 KB
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/**
This file is part of the SFFocusViewLayout package.
(c) Sergio Fernández <fdz.sergio@gmail.com>
For the full copyright and license information, please view the LICENSE
file that was distributed with this source code.
*/
import UIKit
import SFFocusViewLayout
final class ViewController: UIViewController {
@IBOutlet weak var collectionView: UICollectionView!
fileprivate let repository = Repository()
fileprivate let renderer = Renderer()
override func viewDidLoad() {
super.viewDidLoad()
collectionView.delegate = self
collectionView.dataSource = self
collectionView.register(CollectionViewCell.self)
collectionView.decelerationRate = .fast
collectionView.backgroundColor = UIColor(red: 51/255, green: 55/255, blue: 61/255, alpha: 1)
}
override func didReceiveMemoryWarning() {
super.didReceiveMemoryWarning()
}
override var preferredStatusBarStyle: UIStatusBarStyle {
return .lightContent
}
}
extension ViewController: UICollectionViewDataSource {
func collectionView(_ collectionView: UICollectionView, numberOfItemsInSection section: Int) -> Int {
return repository.count
}
func collectionView(_ collectionView: UICollectionView,
cellForItemAt indexPath: IndexPath) -> UICollectionViewCell {
return collectionView.dequeueReusableCell(forIndexPath: indexPath) as CollectionViewCell
}
func collectionView(_ collectionView: UICollectionView,
willDisplay cell: UICollectionViewCell,
forItemAt indexPath: IndexPath) {
guard
let cell = cell as? CollectionViewCellInterface
else {
fatalError("error with registred cell")
}
renderer.present(model: repository[indexPath.item], in: cell)
}
}
extension ViewController: UICollectionViewDelegate {
func collectionView(_ collectionView: UICollectionView, didSelectItemAt indexPath: IndexPath) {
guard
let focusViewLayout = collectionView.collectionViewLayout as? SFFocusViewLayout
else {
fatalError("error casting focus layout from collection view")
}
let offset = focusViewLayout.dragOffset * CGFloat(indexPath.item)
if collectionView.contentOffset.y != offset {
collectionView.setContentOffset(CGPoint(x: 0, y: offset), animated: true)
}
}
}