UITableViewCellAnimation-Article-Final/UITableViewCellAnimation-Article/Animations.swift at 7e515912865a94548520f3db180ddeecf43bcd98 · V8tr/UITableViewCellAnimation-Article-Final · GitHub

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//
//  MoveUpWithBounceTableCellAnimator.swift
//  UITableViewCellAnimation-Article
//
//  Created by Vadym Bulavin on 9/4/18.
//  Copyright © 2018 Vadim Bulavin. All rights reserved.
//

import UIKit

typealias Animation = (UIView, IndexPath, UIScrollView) -> Void

enum AnimationFactory {

    static func makeFade(duration: TimeInterval, delayFactor: Double) -> Animation {
        return { cell, indexPath, _ in
            cell.alpha = 0

            UIView.animate(
                withDuration: duration,
                delay: delayFactor * Double(indexPath.row),
                animations: {
                    cell.alpha = 1
            })
        }
    }

    static func makeMoveUpWithBounce(rowHeight: CGFloat, duration: TimeInterval, delayFactor: Double) -> Animation {
        return { cell, indexPath, scrollView in
            cell.transform = CGAffineTransform(translationX: 0, y: rowHeight)

            UIView.animate(
                withDuration: duration,
                delay: delayFactor * Double(indexPath.row),
                usingSpringWithDamping: 0.4,
                initialSpringVelocity: 0.1,
                options: [.curveEaseInOut],
                animations: {
                    cell.transform = CGAffineTransform(translationX: 0, y: 0)
            })
        }
    }

    static func makeSlideIn(duration: TimeInterval, delayFactor: Double) -> Animation {
        return { cell, indexPath, scrollView in
            cell.transform = CGAffineTransform(translationX: scrollView.bounds.width, y: 0)

            UIView.animate(
                withDuration: duration,
                delay: delayFactor * Double(indexPath.row),
                options: [.curveEaseInOut],
                animations: {
                    cell.transform = CGAffineTransform(translationX: 0, y: 0)
            })
        }
    }

    static func makeMoveUpWithFade(rowHeight: CGFloat, duration: TimeInterval, delayFactor: Double) -> Animation {
        return { cell, indexPath, scrollView in
            cell.transform = CGAffineTransform(translationX: 0, y: rowHeight / 2)
            cell.alpha = 0

            UIView.animate(
                withDuration: duration,
                delay: delayFactor * Double(indexPath.row),
                options: [.curveEaseInOut],
                animations: {
                    cell.transform = CGAffineTransform(translationX: 0, y: 0)
                    cell.alpha = 1
            })
        }
    }
}