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Custom section inset added #43

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33678cc
Custom section inset added
iamshezad Jul 23, 2018
309e2de
Merge branch 'master' into master
iamshezad Oct 12, 2018
ba6e4a3
updated to 4.2
iamshezad Oct 12, 2018
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20 changes: 20 additions & 0 deletions UPCarouselFlowLayout/UPCarouselFlowLayout.swift
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Original file line number Diff line number Diff line change
Expand Up @@ -14,6 +14,12 @@ public enum UPCarouselFlowLayoutSpacingMode {
case overlap(visibleOffset: CGFloat)
}

public enum UPCarouselFlowInitialSpacing {
case startFromZero
case equalSpace
case customSpace(initialX: CGFloat)
}


open class UPCarouselFlowLayout: UICollectionViewFlowLayout {

Expand All @@ -29,6 +35,7 @@ open class UPCarouselFlowLayout: UICollectionViewFlowLayout {
@IBInspectable open var sideItemAlpha: CGFloat = 0.6
@IBInspectable open var sideItemShift: CGFloat = 0.0
open var spacingMode = UPCarouselFlowLayoutSpacingMode.fixed(spacing: 40)
open var initialSpacing = UPCarouselFlowInitialSpacing.equalSpace

fileprivate var state = LayoutState(size: CGSize.zero, direction: .horizontal)

Expand Down Expand Up @@ -59,7 +66,20 @@ open class UPCarouselFlowLayout: UICollectionViewFlowLayout {

let yInset = (collectionSize.height - self.itemSize.height) / 2
let xInset = (collectionSize.width - self.itemSize.width) / 2


switch initialSpacing {
case .startFromZero:
self.sectionInset = UIEdgeInsets(top: yInset, left: 0, bottom: yInset, right: xInset)
case .equalSpace:
self.sectionInset = UIEdgeInsets(top: yInset, left: xInset, bottom: yInset, right: xInset)
case .customSpace(let initialX):
self.sectionInset = UIEdgeInsets(top: yInset, left: initialX, bottom: yInset, right: xInset)
}

self.sectionInset = UIEdgeInsets.init(top: yInset, left: xInset, bottom: yInset, right: xInset)



let side = isHorizontal ? self.itemSize.width : self.itemSize.height
let scaledItemOffset = (side - side*self.sideItemScale) / 2
Expand Down