SAParallaxViewControllerSwift

SAParallaxViewControllerSwift realizes parallax scrolling with blur effect. In addition, it realizes seamless opening transition.

Features

Installation

CocoaPods

SAParallaxViewControllerSwift is available through CocoaPods. If you have cocoapods 0.36 beta or greater, you can install it, simply add the following line to your Podfile:

pod "SAParallaxViewControllerSwift"

Manually

Add the SAParallaxViewControllerSwift directory to your project.

Usage

If you install from cocoapods, You have to white import SAParallaxViewControllerSwift.

Extend SAParallaxViewController like this.

class ViewController: SAParallaxViewController {
    override init() {
        super.init()
    }

    override init(nibName nibNameOrNil: String?, bundle nibBundleOrNil: NSBundle?) {
        super.init(nibName: nibNameOrNil, bundle: nibBundleOrNil)
    }

    required init(coder aDecoder: NSCoder) {
        super.init(coder: aDecoder)
    }

    override func viewDidLoad() {
        super.viewDidLoad()
    }
}

If you want to use UICollectionViewDataSource, implement extension like this. You can set image with cell.setImage(). You can add some UIView member classes to cell.containerView.accessoryView.

extension ViewController: UICollectionViewDataSource {
    override func collectionView(_ collectionView: UICollectionView, cellForItemAt indexPath: IndexPath) -> UICollectionViewCell {
        let cell = super.collectionView(collectionView, cellForItemAt: indexPath) as! SAParallaxViewCell

        let index = indexPath.row % 6
        let imageName = String(format: "image%d", index + 1)
        if let image = UIImage(named: imageName) {
            cell.setImage(image)
        }
        let title = ["Girl with Room", "Beautiful sky", "Music Festival", "Fashion show", "Beautiful beach", "Pizza and beer"]
        let label = UILabel(frame: cell.containerView.accessoryView.bounds)
        label.textAlignment = .Center
        label.text = title[index]
        label.textColor = .whiteColor()
        label.font = .systemFontOfSize(30)
        cell.containerView.accessoryView.addSubview(label)

        return cell
    }
}

If you want to use UICollectionViewDelegate, implement extension like this.

You must copy cell.containerView to viewController.trantisionContainerView because to use opening transition. When you copy them, use containerView.setViews(cells: cells, view: view). Set viewController.transitioningDelegate as self, finally call self.presentViewController().

extension ViewController: UICollectionViewDelegate {
    override func collectionView(_ collectionView: UICollectionView, didSelectItemAt indexPath: IndexPath) {
        super.collectionView(collectionView, didSelectItemAt: indexPath)

        guard let cells = collectionView.visibleCells as? [SAParallaxViewCell] else { return }
        let containerView = SATransitionContainerView(frame: view.bounds)
        containerView.setViews(cells, view: view)

        let viewController = DetailViewController()
        viewController.transitioningDelegate = self
        viewController.trantisionContainerView = containerView

        present(viewController, animated: true, completion: nil)
    }
}

Extend SADetailViewController like this.

SADetailViewController is detail view controller for parallax cell.

class DetailViewController: SADetailViewController {
    override init() {
        super.init()
    }

    override init(nibName nibNameOrNil: String?, bundle nibBundleOrNil: NSBundle?) {
        super.init(nibName: nibNameOrNil, bundle: nibBundleOrNil)
    }

    required init(coder aDecoder: NSCoder) {
        super.init(coder: aDecoder)
    }

    override func viewDidLoad() {
        super.viewDidLoad()
    }
}

Customize

You can change parallax start position with function of cell.containerView.

func setParallaxStartPosition(#y: CGFloat)

You can change height of cell.containerView.accessoryView.

func setAccessoryViewHeight(height: CGFloat)

You can change blur size of cell.containerView.accessoryView.

func setBlurSize(size: CGFloat)

You can change blur color of cell.containerView.accessoryView.

func setBlurColor(color: UIColor)

You can change blur color alpha of cell.containerView.accessoryView.

func setBlurColorAlpha(alpha: CGFloat)

Requirements

Xcode 8.0-beta or greater
iOS 8.0 or greater
ARC
SABlurImageView
MisterFusion

Author

Taiki Suzuki, [email protected]

License

SAParallaxViewControllerSwift is available under the MIT license. See the LICENSE file for more info.

marty-suzuki/SAParallaxViewControllerSwift

marty-suzuki

Reviews

Repository Details