VDPin

Description

This repository provides some convenience methods for creating constraints.

Usage

1. Pin attributes of the view to a specified item or its superview.

view.pin(.edges)
view.pin(.leading)
view.pin(.edges(.horizontal), 16)
view.pin(edges(.top, .bottom), 10, to: safeAreaLayoutGuide)
view.pin(edges: [.top: 10, .horizontal: 5], to: safeAreaLayoutGuide)
// pin view after/before another view
rightView.pin(to: .trailing, of: leftView, options: .offset(10))
view.pin(.center, 10)
view.pin([.size: 100, .centerY: 10, .top: 20, .edges(.horizontal): 10])

2. Pin any attributes between two views

view.pin(.top, to: .centerY, of: anotherView)

3. Set aspect ratio of the view.

view.pin(aspectRatio: 2 / 3)

4. All pin methods contain a with options parameter.

view.pin(.edges, 10, options: .priority(.required))

options:

• .priority(300): set the priority of the constraint
• .offset(10): set the offset of the constraint
• .multiplier(2): set the multiplier of the constraint
• .relation(.greaterThanOrEqual), .greaterThanOrEqual, .lessThanOrEqual: set the relation of the constraint
• .inactive, .activated(false): set the active state of the constraint
• .update: update the constraint if it already exists
• .translatesAutoresizingMask: don't change translatesAutoresizingMaskIntoConstraints property
• .safeArea: use safeAreaLayoutGuide instead of superview as default second item

5. All these methods can be chained

view
    .pin(.edges(.horizontal), 10)
    .pin(to: .bottom, of: anotherView.pin(.height, 50), options: .offset(20))
    .pin(.size, 100)

6. Use PartialRangeThrough and PartialRangeFrom for offset value

view.pin(.bottom, 10..., with: .safeArea)
view.pin(to: .bottom, of: anotherView, options: .offset(...10))

7. All these methods return Constraints object, that can be used for updating constraints.

Installation

1. Swift Package Manager

Create a Package.swift file.

// swift-tools-version:5.7
import PackageDescription

let package = Package(
  name: "SomeProject",
  dependencies: [
    .package(url: "https://github.com/dankinsoid/VDPin.git", from: "1.7.0")
  ],
  targets: [
    .target(name: "SomeProject", dependencies: ["VDPin"])
  ]
)

$ swift build

2. CocoaPods

Add the following line to your Podfile:

pod 'VDPin'

and run pod update from the podfile directory first.

Author

dankinsoid, voidilov@gmail.com

License

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