iOS application development services

/
//  FinancialReport.swift
//
//  Copyright © 2018DB2limited. All rights reserved.
//
import UIKit
UICollectionViewDelegateFlowLayout {
    func collectionView(_ collectionView: UICollectionView,
        layout collectionViewLayout: UICollectionViewLayout,
        sizeForItemAt indexPath: IndexPath) -> CGSize {
        let width = collectionView.frame.width
        return CGSize.init(width: width, height: width)
    }

    func collectionView(_ collectionView: UICollectionView,
                        viewForSupplementaryElementOfKind kind: String,
                        at indexPath: IndexPath) -> UICollectionReusableView {
        switch kind {
        case UICollectionView.elementKindSectionHeader:
                guard let items = specials else { fatalError() }
                return style!.horizontalHeader(for: indexPath,
                in: collectionView, with: items, delegate: self)
        default:
            fatalError("Unexpected element kind")
        }
    }
}