SwiftyImage

The most sexy way to use images in Swift.

Features

• Create images with method chaining
• Gradient fill and stroke
• Create and manipulate images with CGContext
• Combine images with + operator
• iOS support
• macOS support

At a Glance

Creating Images

UIImage.size(width: 100, height: 100)
  .color(.white)
  .border(color: .red)
  .border(width: 10)
  .corner(radius: 20)
  .image

UIImage.resizable()
  .color(.white)
  .border(color: .blue)
  .border(width: 5)
  .corner(radius: 10)
  .image

Creating Color Overlayed Image

let image = UIImage(named: "myArrow").with(color: UIColor.blueColor())

Getting Started

SwiftyImage provides a simple way to create images with method chaining.

Step 1. Start Chaining

Method chaining starts from UIImage.size() or UIImage.resizable().

UIImage.size(width: CGFloat, height: CGFloat) // ...
UIImage.size(size: CGSize) // ...
UIImage.resizable() // ...

Step 2. Setting Properties

You can set fill color, border attributes, corner radius, etc.

UIImage.size(width: 100, height: 100)  // fixed size
  .color(.white)                       // fill color
  .border(color: .red)                 // border color
  .border(width: 10)                   // border width
  .corner(radius: 20)                  // corner radius

UIImage.resizable() // resizable image
  .color(.white)
  .border(color: .lightGray)
  .border(width: 1)
  .corner(radius: 5)

Step 3. Generating Image

Use .image at the end of method chaining to generate image.

imageView.image = UIImage.size(width: 100, height: 100)
  .color(.white)
  .border(color: .red)
  .border(width: 10)
  .corner(radius: 20)
  .image  // generate UIImage

Methods Available

Starting Method Chaining

• .size(width: CGFloat, height: CGFloat)

  Starts chaining for fixed size image

• .size(CGSize)

  Starts chaining for fixed size image

• .resizable()

  Starts chaining for resizable image

Setting Properties

• .color(UIColor)

  Sets fill color

• .color(gradient: [UIColor], locations: [CGFloat], from: CGPoint, to: CGPoint)

  Sets gradient fill color

  New in version 1.1.0

• .border(width: CGFloat)

  Sets border width

• .border(color: UIColor)

  Sets border color

• .border(gradient: [UIColor], locations: [CGFloat], from: CGPoint, to: CGPoint)

  Sets gradient border color

  New in version 1.1.0

• .border(alignment: BorderAlignment)

  Sets border alignment. Same with Photoshop's

  available values: .inside, .center, .outside

• .corner(radius: CGFloat)

  Sets all corners radius of image

• .corner(topLeft: CGFloat)

  Sets top left corner radius of image

• .corner(topRight: CGFloat)

  Sets top right corner radius of image

• .corner(bottomLeft: CGFloat)

  Sets bottom left corner radius of image

• .corner(bottomRight: CGFloat)

  Sets bottom right corner radius of image

Generating Image

• .image

  Generates and returns image

Play with CGContext

SwiftyImage also provides a simple method to create or manipulate images with CGContext.

Creating Images

let image = UIImage.with(size: CGSize(width: 100, height: 100)) { context in
  UIColor.lightGrayColor().setFill()
  CGContextFillEllipseInRect(context, CGRect(x: 0, y: 0, width: 100, height: 100))
}

Manipulating Images

let newImage = oldImage.with { context in
  UIColor.lightGrayColor().setFill()
  CGContextFillEllipseInRect(context, CGRect(x: 0, y: 0, width: 100, height: 100))
}

Image Operator

You can easily combine multiple images with + operator.

let backgroundImage = ...
let iconImage = ...
let combinedImage = backgroundImage + iconImage

Installation

pod 'SwiftyImage', '~> 1.1'

Playground

Use CocoaPods command $ pod try SwiftyImage to try Playground!

License

SwiftyImage is under MIT license. See the LICENSE file for more info.