Adapting to different screen widths by automatically placing tabs evenly about smoothtab HOT 3 CLOSED

let widestImageSize = items.map({ $0.image.size.width }).max() ?? 0
let longestTitle = items.max(by: { $1.title.count > $0.title.count })?.title ?? ""
let closedItemwidth = widestImageSize + options.innerPadding * 2
let maxPossibleOpenItemWidth = longestTitle.expectedWidth(for: options.titleFont) + widestImageSize + options.innerPadding * 2 + options.imageTitleMargin
let expectedMargin = (UIScreen.main.bounds.size.width - closedItemwidth * CGFloat(items.count - 1) - maxPossibleOpenItemWidth) / CGFloat(items.count - 1)

options.itemsMargin = expectedMargin

extension String {
    func expectedHeight(for font: UIFont, and width: CGFloat) -> CGFloat {
        return self.boundingRect(
            with: CGSize(width: width, height: CGFloat.greatestFiniteMagnitude),
            options: [.usesLineFragmentOrigin, .usesFontLeading],
            attributes: [NSAttributedStringKey.font: font],
            context: nil).height
    }
}

let widestImageSize = tabItems.map({ $0.image.size.width }).max() ?? 0
let closedItemwidth = widestImageSize + options.innerPadding * 2

let tabWidths = tabItems.map({ $0.expectedWidth(for: options.titleFont) + options.innerPadding * 2 + options.imageTitleMargin })
let widestOpenTabWidth: CGFloat = tabWidths.max() ?? CGFloat.greatestFiniteMagnitude

let sumOfOpenTabs = tabWidths.reduce(0, +)
let screenWidth = UIScreen.main.bounds.width
if tabItems.count == 2 && widestOpenTabWidth <= screenWidth / 2 { // if only 2 of them, and the biggest one takes less than half screen
   options.itemsMargin = screenWidth / 2 - (tabWidths.first ?? 0) // placing 2nd tab right in the second half of the screen
} else if sumOfOpenTabs <= screenWidth { // if all tabs would fit screen when opened
   options.itemsMargin = (screenWidth - sumOfOpenTabs) / CGFloat(tabItems.count - 1) // trying to place them evenly
} else {
   let expectedMargin = min(max(0, (screenWidth - closedItemwidth * CGFloat(tabItems.count - 1) - widestOpenTabWidth) / CGFloat(tabItems.count - 1)), screenWidth)
   options.itemsMargin = expectedMargin // distance between buttons
}