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https://github.com/yacir/CollectionViewSlantedLayout

A CollectionView Layout displaying a slanted cells
https://github.com/yacir/CollectionViewSlantedLayout

collection-view collectionview collectionviewcell collectionviewlayout ios slanted swift swift4 ui ui-components ui-design ui-kit uicollectionview uicollectionviewcell uicollectionviewlayout uikit

Last synced: 22 days ago
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A CollectionView Layout displaying a slanted cells

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README 

        


    CollectionViewSlantedLayout






    Swift 5.1

    

        

    

    SMP ready

    Carthage compatible

    

    

    


    

        

    

    

        

    

    

        codacy badge

    




**CollectionViewSlantedLayout** is a subclass of the [UICollectionViewLayout](https://developer.apple.com/documentation/uikit/uicollectionviewlayout) allowing the display of slanted cells in a [UICollectionView](https://developer.apple.com/documentation/uikit/uicollectionview).





  	CollectionViewSlantedLayout 




## Features

- [x] Pure Swift 5.

- [x] Works with every UICollectionView.

- [x] Horizontal and vertical scrolling support.

- [x] Dynamic cells height

- [x] Fully Configurable



## Installation



### CocoaPods

CollectionViewSlantedLayout is available through [CocoaPods](http://cocoapods.org). To install

it, simply add the following line to your Podfile:



```ruby

use_frameworks!

pod 'CollectionViewSlantedLayout', '~> 3.1'

```



### Carthage



You can also install it via [Carthage](https://github.com/Carthage/Carthage). To do so, add the following to your Cartfile:



```terminal

github 'yacir/CollectionViewSlantedLayout'

```



## Usage



1. Import `CollectionViewSlantedLayout ` module to your controller



    ```swift

    import CollectionViewSlantedLayout

    ```

    

2. Create an instance and add it to your `UICollectionView`.



    ```swift

	let slantedSayout = CollectionViewSlantedLayout()

	UICollectionView(frame: .zero, collectionViewLayout: slantedSayout)

    ```

    

3. Use the `CollectionViewSlantedCell` class for your cells or subclass it.



Find a demo in the Examples folder.



## Properties



- **slantingSize**:



	```swift

	@IBInspectable var slantingSize: UInt

	```

	The slanting size. The default value of this property is `75`.



- **slantingDirection**:

	

	```swift

	var slantingDirection: SlantingDirection

	```

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

	

- **slantingAngle**:



	```swift

	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.

	     

	```swift

	if let layout = collectionView.collectionViewLayout as? CollectionViewSlantedLayout {

		cell.contentView.transform = CGAffineTransform(rotationAngle: layout.rotationAngle)

	}

	```

- **scrollDirection**:

	

	```swift

	var scrollDirection: UICollectionViewScrollDirection

	```

	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**:

	

	```swift

	@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**:

	

	```swift

	@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**:

	

	```swift

	@IBInspectable var lineSpacing: CGFloat

	```

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

	

- **itemSize**:

	

	```swift

	@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**:

	

	```swift

	var zIndexOrder: ZIndexOrder

	```

	The zIndex order of the items in the layout. The default value of this property is `ascending`.



	

## 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:



```swift

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.

     

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 a fixed set of sizes or dynamically adjust the sizes based on the cell’s content.



## Author



[Yassir Barchi](https://yassir.fr)



## Acknowledgement



This framework is inspired by [this prototype](https://dribbble.com/shots/1727594-Slanted-Table-Cells-With-Parallax?_=1456679145403) released by [Matt Bridges](https://dribbble.com/rrridges).



## License



**CollectionViewSlantedLayout** is available under the MIT license. See the LICENSE file for more info.