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/*
ericasadun.com
Super-basic priority-less layout utilities
*/
#if os(iOS)
import UIKit
#else
import Cocoa
#endif
// UIKit/Cocoa Classes
#if os(OSX)
public typealias View = NSView
public typealias Font = NSFont
public typealias Color = NSColor
public typealias Image = NSImage
public typealias BezierPath = NSBezierPath
public typealias ViewController = NSViewController
#else
public typealias View = UIView
public typealias Font = UIFont
public typealias Color = UIColor
public typealias Image = UIImage
public typealias BezierPath = UIBezierPath
public typealias ViewController = UIViewController
#endif
let DefaultLayoutOptions: NSLayoutFormatOptions = []
#if !os(OSX)
/// Stretch view to the edges of the parent view controller
public func StretchViewToViewController(viewController: ViewController, view: View, insets: CGSize) {
view.translatesAutoresizingMaskIntoConstraints = false
if view.superview == nil {viewController.view.addSubview(view)}
let topGuide = viewController.topLayoutGuide
let bottomGuide = viewController.bottomLayoutGuide
let bindings: [String: AnyObject] = [
"topGuide": topGuide,
"bottomGuide": bottomGuide,
"view": view]
let metrics: [String: AnyObject] = [
"hInset": insets.width,
"vInset": insets.height
]
for format: String in [
"H:|-hInset-[view]-hInset-|",
"V:[topGuide]-vInset-[view]-vInset-[bottomGuide]"
] {
let constraints = NSLayoutConstraint.constraintsWithVisualFormat(format, options: DefaultLayoutOptions, metrics: metrics, views: bindings)
NSLayoutConstraint.activateConstraints(constraints)
}
}
#endif
/// Stretch view to superview
public func StretchViewToSuperview(view: View, horizontal: Bool, vertical: Bool) {
view.translatesAutoresizingMaskIntoConstraints = false
if horizontal {
let constraints = NSLayoutConstraint.constraintsWithVisualFormat("H:|[view]|", options: NSLayoutFormatOptions(rawValue:0), metrics: nil, views: ["view":view])
NSLayoutConstraint.activateConstraints(constraints)
}
if vertical {
let constraints = NSLayoutConstraint.constraintsWithVisualFormat("V:|[view]|", options: NSLayoutFormatOptions(rawValue:0), metrics: nil, views: ["view": view])
NSLayoutConstraint.activateConstraints(constraints)
}
}
/// Center view in superview
public func CenterViewInSuperview(view: View, horizontal: Bool, vertical: Bool) {
view.translatesAutoresizingMaskIntoConstraints = false
var c: NSLayoutConstraint
if vertical {
c = NSLayoutConstraint(item: view, attribute: .CenterY, relatedBy: .Equal, toItem: view.superview, attribute: .CenterY, multiplier: 1.0, constant: 0.0)
c.active = true
}
if horizontal {
c = NSLayoutConstraint(item: view, attribute: .CenterX, relatedBy: .Equal, toItem: view.superview, attribute: .CenterX, multiplier: 1.0, constant: 0.0)
c.active = true
}
}
/// Constraint view
public func ConstrainViews(format: String, views: View...) {
guard !views.isEmpty else {return}
guard let firstView = views.first else {return}
var bindings: [String: View] = ["view": firstView]
var i = 1
for view in views {
bindings["view"+String(i)] = view; i += 1
view.translatesAutoresizingMaskIntoConstraints = false
}
let constraints = NSLayoutConstraint.constraintsWithVisualFormat(format, options: NSLayoutFormatOptions(rawValue: 0), metrics: nil, views: bindings)
NSLayoutConstraint.activateConstraints(constraints)
}
public func ConstrainView(format: String, view: View) {
ConstrainViews(format, views: view)
}
@muescha

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commented Nov 24, 2016

did you have a Swift 3 Version?

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