PresentCardScroller

A Pretty Card Scrolling UI in Swift.

Installation

CocoaPods

pod 'PresentCardScroller', :git => 'https://github.com/presentco/PresentCardScroller.git'

For more information see (Cocoapods.org)

Demo

Check out the demo project for a working example.

Basic usage

Init the card scroller and add some models:

    let cardScroller = CardScrollingViewController()

    let models = [ 
      CardModel(
          image: UIImage(named: "photo").unsafelyUnwrapped,
          title: "This is a card",
          subtitle: "Image credit 'foo'"
      ),
      ...
    ]
    cardScroller.configure(with: models)

To be notified of selected cards implement the delegate:

    cardScroller.delegate = self

    public protocol CardScrollingViewControllerDelegate: class {
      func cardScrolling(viewController: CardScrollingViewController, didSelectCardFor model: CardModel)
      ...
   }

Configuration

Some PresentCardScroller parameters you may wish to change along with their default values:

	/// If true cards are initially added with an animation
    public var animateCardDropIn = true
    
    /// If true a tap on a card will select the card regardless of position. If false
    /// only the top card is selectable and taps on other cards cause them to 
    /// auto-scroll to the top position.
    public var tapShowsCardAnyPosition = false
    
    /// If true cards scroll continuously with no adjustment to the stopping position.
    /// If false card scrolling will "settle" with a card aligned at the top of the view.
    public var cardsScrollContinuous = false
    
    /// The rolloff easing function exponent: y = x^power * const
    public var rolloffPower: CGFloat = 4 
    
    /// The rolloff easing function constant: y = x^power * const
    public var rolloffConstant: CGFloat = 3.0
    
    /// If `true`, the card alpha fades to zero as it leaves the screen.
    public let transformAlpha = false