https://github.com/anthonylatsis/sombra

A simple retroaction on CALayer to support vibrant image projections as shadows.
https://github.com/anthonylatsis/sombra

calayer image ios layer shadow shadows swift xcode

Last synced: 9 days ago
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A simple retroaction on CALayer to support vibrant image projections as shadows.

• Host: GitHub
• URL: https://github.com/anthonylatsis/sombra
• Owner: AnthonyLatsis
• License: mit
• Created: 2018-07-12T22:44:39.000Z (over 6 years ago)
• Default Branch: master
• Last Pushed: 2018-07-18T17:42:22.000Z (over 6 years ago)
• Last Synced: 2024-09-16T11:42:08.069Z (about 2 months ago)
• Topics: calayer, image, ios, layer, shadow, shadows, swift, xcode
• Language: Swift
• Homepage:
• Size: 24.4 KB
• Stars: 2
• Watchers: 2
• Forks: 0
• Open Issues: 0
• Metadata Files:
  • Readme: README.md
  • License: LICENSE

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README

        
# Sombra

A light native-style retroaction on `CALayer` to support vibrant image projections as shadows.

## Usage

To have an image projection instead of a plane color as a shadow, you use `shadowImage`. The rest is set up the usual way using existing shadow properties.

``` swift

view.layer.shadowOpacity = 0.8

view.layer.shadowOffset = CGSize(width: 0, height: 15)

view.layer.shadowRadius = 30

view.layer.shadowImage = UIImage().cgImage

```

### Considerations

While using an image projection as a shadow, the value of `shadowOpacity` will be cached and the property itself set to zero. This is done for the regular shadow not to appear. Setting the image to `nil` will leave you with a regular shadow, if any (`shadowOpacity > 0`).  

The image projection currently doesn't support animating through shadow properties.

## Requirements

* Xcode 9 +

* Swift 4 +

* iOS 10 +

## Installation

Sombra can be integrated using [CocoaPods](https://cocoapods.org/). Specify it in your `Podfile` and run `$ pod install`.

``` ruby

platform :ios, '10.0'

use_frameworks!

target '' do

    pod 'Sombra'

end

```