Slanted Layout

Ranjit Kumar

29 November 2023

CollectionViewSlantedLayout

Slanted Layout is a subclass of the UICollectionViewLayout allowing the display of slanted cells in a UICollectionView, either horizontally or vertically.

Features

Pure Swift 5.
Works with every UICollectionView.
Horizontal and vertical scrolling support.
Dynamic cells height
Fully Configurable

Installation

CocoaPods

CollectionViewSlantedLayout is available through CocoaPods. To install it, simply add the following line to your Podfile:

pod 'CollectionViewSlantedLayout', '~> 3.1'

1	pod 'CollectionViewSlantedLayout', '~> 3.1'

Usage

Import CollectionViewSlantedLayout module to your controller

import CollectionViewSlantedLayout

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import CollectionViewSlantedLayout
Create an instance and add it to your UICollectionView.

let slantedSayout = CollectionViewSlantedLayout() UICollectionView(frame: .zero, collectionViewLayout: slantedSayout)

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let slantedSayout = CollectionViewSlantedLayout() UICollectionView(frame: .zero, collectionViewLayout: slantedSayout)
Use the CollectionViewSlantedCell class either your cells or subclass it.

Properties

slantingSize:

@IBInspectable var slantingSize: UInt

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@IBInspectable var slantingSize: UInt

The slanting size. The default value of this property is either 75 or 80.
slantingDirection:

var slantingDirection: SlantingDirection

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var slantingDirection: SlantingDirection

The slanting direction. The default value of this property is upward.

slantingAngle:

fileprivate(set) var slantingAngle: CGFloat

1	fileprivate(set) var slantingAngle: CGFloat

The angle, in radians, of the slanting. The value of this property could be used to apply a rotation transform on the cell’s contentView in the collectionView(_:cellForItemAt:) method implementation, either horizontally or vertically.

if let layout = collectionView.collectionViewLayout as? CollectionViewSlantedLayout { cell.contentView.transform = CGAffineTransform(rotationAngle: layout.rotationAngle) }

1	if let layout = collectionView.collectionViewLayout as? CollectionViewSlantedLayout { cell.contentView.transform = CGAffineTransform(rotationAngle: layout.rotationAngle) }

scrollDirection:

var scrollDirection: UICollectionViewScrollDirection

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var scrollDirection: UICollectionViewScrollDirection

In the scroll direction of the grid. The grid layout scrolls along one axis only, either horizontally or vertically. The default value of this property is vertical
isFirstCellExcluded:

@IBInspectable var isFirstCellExcluded: Bool

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@IBInspectable var isFirstCellExcluded: Bool

Set it to true to disable the slanting for the first cell. The default value of this property is false.
isLastCellExcluded:

@IBInspectable var isLastCellExcluded: Bool

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@IBInspectable var isLastCellExcluded: Bool

Set it to true to disable the slanting for the last cell. The default value of this property is false.
lineSpacing:

@IBInspectable var lineSpacing: CGFloat

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@IBInspectable var lineSpacing: CGFloat

The spacing to use between two items. The default value of this property is 10.0.
itemSize:

@IBInspectable var itemSize: CGFloat

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@IBInspectable var itemSize: CGFloat

The default size to use for cells. If the delegate does not implement the collectionView(_:layout:sizeForItemAt:) method, the slanted layout uses the value in this property to set the size of each cell. This results in cells that all have the same size. The default value of this property is 225.
zIndexOrder:

var zIndexOrder: ZIndexOrder

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var zIndexOrder: ZIndexOrder

The zIndex order of the items in the layout. The default value of this property is ascending.
The grid layout scrolls along one axis only, either horizontally or vertically

Protocols

The CollectionViewDelegateSlantedLayout protocol defines methods that let you coordinate with a CollectionViewSlantedLayout object to implement a slanted layout. The CollectionViewDelegateSlantedLayout protocol has the following methods:

optional func collectionView(_ collectionView: UICollectionView, layout collectionViewLayout: CollectionViewSlantedLayout, sizeForItemAt indexPath: IndexPath) -> CGFloat

1	optional func collectionView(_ collectionView: UICollectionView, layout collectionViewLayout: CollectionViewSlantedLayout, sizeForItemAt indexPath: IndexPath) -> CGFloat

This method asks the delegate for the size of the specified item’s cell, either horizontally or vertically

If you do not implement this method, the slanted layout uses the values in its itemSize property to set the size of items instead.

Your implementation of this method can return either a fixed set of sizes or dynamically adjust the sizes based on the cell’s content, either horizontally or vertically

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