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Made the code more concise

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Pfeil, Scott Robert 2020-06-08 10:01:58 -04:00
parent f4fa6d8291
commit cd23384db3
1 changed files with 6 additions and 15 deletions
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21
MVMCoreUI/BaseClasses/UICollectionViewLeftAlignedLayout.swift
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@ -5,30 +5,21 @@
// Created by Dhamodaram Nandi on 05/06/20. // Created by Dhamodaram Nandi on 05/06/20.
// Copyright © 2020 Verizon Wireless. All rights reserved. // Copyright © 2020 Verizon Wireless. All rights reserved.
// //
// Left aligns items and makes the minimumInteritemSpacing absolute.
import Foundation import Foundation
class UICollectionViewLeftAlignedLayout: UICollectionViewFlowLayout { class UICollectionViewLeftAlignedLayout: UICollectionViewFlowLayout {
override func layoutAttributesForElements(in rect: CGRect) -> [UICollectionViewLayoutAttributes]? { override func layoutAttributesForElements(in rect: CGRect) -> [UICollectionViewLayoutAttributes]? {
guard let attributes = super.layoutAttributesForElements(in: rect) else { guard let attributes = super.layoutAttributesForElements(in: rect) else { return nil }
return nil
}
var newAttributesForElementsInRect = [UICollectionViewLayoutAttributes]() var newAttributesForElementsInRect = [UICollectionViewLayoutAttributes]()
var leftMargin: CGFloat = 0.0;
let leftPadding: CGFloat = 0
let interItemSpacing = minimumInteritemSpacing
var maxY: CGFloat = -1.0
for attribute in attributes { for attribute in attributes {
if attribute.frame.origin.y >= maxY { if let previousFrame = newAttributesForElementsInRect.last,
leftMargin = leftPadding MVMCoreGetterUtility.cgfequal(previousFrame.frame.minY, attribute.frame.minY) {
attribute.frame.origin.x = previousFrame.frame.maxX + minimumInteritemSpacing
} else { } else {
var newLeftAlignedFrame = attribute.frame attribute.frame.origin.x = 0
newLeftAlignedFrame.origin.x = leftMargin
attribute.frame = newLeftAlignedFrame
} }
attribute.frame.origin.x = leftMargin
leftMargin += attribute.frame.width + interItemSpacing
maxY = max(attribute.frame.maxY, maxY)
newAttributesForElementsInRect.append(attribute) newAttributesForElementsInRect.append(attribute)
} }
return newAttributesForElementsInRect return newAttributesForElementsInRect