import AmazingBubbles

class ViewController: UIViewController {

  @IBOutlet weak var bubblesView: ContentBubblesView! {
      didSet {
          bubblesView.delegate = self
          bubblesView.dataSource = self
      }
  }
  
}

public protocol ContentBubblesViewDelegate: class {
    func minimalSizeForBubble(in view: ContentBubblesView) -> CGSize
    func maximumSizeForBubble(in view: ContentBubblesView) -> CGSize
    
    func contentBubblesView(_ view: ContentBubblesView, didSelectItemAt index: Int)
    func contentBubblesView(_ view: ContentBubblesView, shouldChangeSizeForItemAt index: Int) -> Bool
    func contentBubblesView(_ view: ContentBubblesView, didChangeSizeForItemAt index: Int)
}

public protocol ContentBubblesViewDataSource: class {
    func countOfSizes(in view: ContentBubblesView) -> Int
    
    func numberOfItems(in view: ContentBubblesView) -> Int
    func addOrUpdateBubbleView(forItemAt index: Int, currentView: BubbleView?) -> BubbleView
}

extension ViewController: ContentBubblesViewDataSource {
    func countOfSizes(in view: ContentBubblesView) -> Int {
        return 3
    }
    
    func numberOfItems(in view: ContentBubblesView) -> Int {
        return 15
    }
    
    func addOrUpdateBubbleView(forItemAt index: Int, currentView: BubbleView?) -> BubbleView {
        var view: BubbleView = currentView ?? BubbleView()        
        view.backgroundColor = .clear
        let randomOrigin = CGPoint(x: CGFloat(drand48() * Double(self.view.frame.width * 2 / 3)),
                                   y: CGFloat(drand48() * Double(self.view.frame.height * 2 / 3)))
        view.frame = CGRect(origin: randomOrigin,
                            size: .zero)
        return view
    }
}

bubblesView.reload(randomizePosition: true) 

bubblesView.tapEnabled = true
bubblesView.panEnabled = false