SimplyLayout
A swift syntactic sugar for anchor based Auto Layout
Installation
CocoaPod
# Swift 4
pod 'SimplyLayout'
# Swift 3
pod 'SimplyLayout', :git => 'https://github.com/aipeople/SimplyLayout.git', :tag => 'swift3-1.0.1'
Usage
Operator
-
+,--> Set the constant -
*-> Set the multiplier -
~-> Set the priority
Example:
view.widthAnchor == 100
// view.widthAnchor.constraint(equalToConstant: 100).isActive = true
// view.translatesAutoresizingMaskIntoConstraints = false
view.heightAnchor == view.superview!.heightAnchor * 0.25 + 40 ~ 750
// let constraint = view.heightAnchor.constraint(equalTo: view.superview!.heightAnchor, multiplier: 0.25, constant: 40)
// constraint.priority = UILayoutPriority(rawValue: 750)
// constraint.isActive = true
// view.translatesAutoresizingMaskIntoConstraints = falseActivation
Constraints will be activated automatically.
You can turn this feature off by setting the SimplyLayout.config.defaultActivation to false.
For some reasons, you may want to create a constraint with different activation status. ++ and -- can help you get rid of default configs.
Example:
SimplyLayout.config.defaultActivation = true
view.widthAnchor == 100
// view.widthAnchor.constraint(equalToConstant: 100).isActive = true
view.widthAnchor == --100
// view.widthAnchor.constraint(equalToConstant: 100)
SimplyLayout.config.defaultActivation = false
view.heightAnchor == view.superview!.heightAnchor * 0.25
// let constraint = view.heightAnchor.constraint(equalTo: view.superview!.heightAnchor, multiplier: 0.25)
view.heightAnchor == ++view.superview!.heightAnchor * 0.25
// let constraint = view.heightAnchor.constraint(equalTo: view.superview!.heightAnchor, multiplier: 0.25)
// constraint.isActive = trueAccess the constraint
A new created constraint can be accessed easily by using the = operator.
Example:
let constraint = view.heightAnchor == view.superview!.heightAnchor * 0.25Configurations
Default behavior can be set in SimplyLayout.config.
-
defaultPriority：Default value is.required -
defaultActivation：Default value istrue
