avoideroffsets.swift

extension KeyboardAvoider {
    
    func keyboardOffsets(isTabBar: Bool = true, offset: CGFloat = 0) -> (total: CGFloat, adjusted: CGFloat) {
        
        let tabBarHeight = isTabBar ? UITabBarController().tabBar.frame.height : 0
        let safeAreaHeight = UIApplication.shared.windows.first{ $0.isKeyWindow }?.safeAreaInsets.bottom ?? 0
        let totalKeyboardOffset = self.keyboardRect.height
        let keyboardOffset = totalKeyboardOffset > 0 ? totalKeyboardOffset - tabBarHeight - safeAreaHeight - offset : 0
        
        return (totalKeyboardOffset, keyboardOffset)
    }
}