ScalingCarousel

Scaling Carousel is easy usable pod to make your collection view have carousel effect as well scaling to full screen as well.

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Usage:

1. Drag UICollectionViewController in storyboard, create a swift file for it and make it a subsclass of ScalingCarouselCollectionVC, also conform to protocol ScalingCarouselProtocol.

2. Create a UICollectionViewCell class and make it a subsclass of ScalingCarouselCVCell and connect following @IBOutlets:
   a: mainScrollView: (UIScrollView) the main scroll view in collection view cell class responsible for making cell full size and initial size.
   b: contentTopAnchor : (NSLayoutConstraint) the top anchor of view that is direct child of mainScrollView.

3. Set ScalingCarouselProtocol delegate to self, in viewDidLoad method after super.viewDidLoad() call super.carouselDelegate = self.

4. While conforming to ScalingCarouselProtocol provide value of following:
   a: reuseIdentifier: (String) the reuse identifier of UICollectionViewCell
   b: cellWidthScalePortrait: (CGFloat 0 to 1) UICollectionViewCell width scale with respect to UIViewControllers View property for Portrait orientation.
   c: cellHeightScalePortrait: (CGFloat 0 to 1) UICollectionViewCell height scale with respect to UIViewControllers View property for Portrait orientation.
   d: cellWidthScaleLandscape: (CGFloat 0 to 1) UICollectionViewCell width scale with respect to UIViewControllers View property for Landscape orientation.
   e: cellHeightScaleLandscape: (CGFloat 0 to 1) UICollectionViewCell height scale with respect to UIViewControllers View property for Landscape orientation.
   
   Also you can use following optional methds from ScalingCarouselProtocol
   a:cellDidShow(at indexPath: IndexPath): Calls when a specific cell shown to user.
   b:cellPreFetch(at indexPaths: [IndexPath]): From prefetchDataSource delegate, called for prefething of cell.
   c:cellCancelPreFetch(at indexPaths: [IndexPath]): From prefetchDataSource delegate, called for canceling of prefetch.

5. Implement methods of UICollectionViewDataSource i.e
   a:collectionView(_ collectionView: UICollectionView, numberOfItemsInSection section: Int): Provide your own DataSource count
   b:collectionView(_ collectionView: UICollectionView, cellForItemAt indexPath: IndexPath): in this method instead of using collectionView.dequeueReusableCell(withReuseIdentifier: String, for: IndexPath)
   use
   super.collectionView(collectionView, cellForItemAt: indexPath) as! UICollectionViewCell <- (Collection Cell that is a subclass of ScalingCarouselCVCell)

6. If using viewDidAppear(_ animated: Bool) and viewDidDisappear(_ animated: Bool), remember to use super call as well or else orientation change won't function properly.

7. Optional: You can use super.scrollToIndex?(IndexPath) to scroll UICollectionView to a specific IndexPath.

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Installation:

Using Cocoapods:

use pod 'ScalingCarousel', :git => 'https://github.com/ahsanateeq/ScalingCarousel.git'

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