added Support for UILayoutguide

SnapKit.xcodeproj/project.pbxproj

@@ -31,6 +31,7 @@
 		56A0DC221C859F15005973AB /* AppDelegate.swift in Sources */ = {isa = PBXBuildFile; fileRef = 56A0DC211C859F15005973AB /* AppDelegate.swift */; };
 		56A0DC321C85A2C1005973AB /* BasicUIScrollViewController.swift in Sources */ = {isa = PBXBuildFile; fileRef = 56A0DC311C85A2C1005973AB /* BasicUIScrollViewController.swift */; };
 		56A0DC341C85AFBF005973AB /* SimpleLayoutViewController.swift in Sources */ = {isa = PBXBuildFile; fileRef = 56A0DC331C85AFBF005973AB /* SimpleLayoutViewController.swift */; };
+		6BA7C9EA1D7472B3006586BC /* LayoutGuide+SnapKit.swift in Sources */ = {isa = PBXBuildFile; fileRef = 6BA7C9E91D7472B3006586BC /* LayoutGuide+SnapKit.swift */; };
 		EE4910981B19A26000A54F1F /* ViewController+SnapKit.swift in Sources */ = {isa = PBXBuildFile; fileRef = EE4910971B19A26000A54F1F /* ViewController+SnapKit.swift */; };
 		EE4910991B19A40200A54F1F /* SnapKit.framework in Frameworks */ = {isa = PBXBuildFile; fileRef = EEBCC9D819CC627D0083B827 /* SnapKit.framework */; };
 		EE94F6091AC0F10A008767FF /* UIKit.framework in Frameworks */ = {isa = PBXBuildFile; fileRef = EE94F6081AC0F10A008767FF /* UIKit.framework */; };
@@ -107,6 +108,7 @@
 		56A0DC211C859F15005973AB /* AppDelegate.swift */ = {isa = PBXFileReference; fileEncoding = 4; lastKnownFileType = sourcecode.swift; path = AppDelegate.swift; sourceTree = "<group>"; };
 		56A0DC311C85A2C1005973AB /* BasicUIScrollViewController.swift */ = {isa = PBXFileReference; fileEncoding = 4; lastKnownFileType = sourcecode.swift; path = BasicUIScrollViewController.swift; sourceTree = "<group>"; };
 		56A0DC331C85AFBF005973AB /* SimpleLayoutViewController.swift */ = {isa = PBXFileReference; fileEncoding = 4; lastKnownFileType = sourcecode.swift; path = SimpleLayoutViewController.swift; sourceTree = "<group>"; };
+		6BA7C9E91D7472B3006586BC /* LayoutGuide+SnapKit.swift */ = {isa = PBXFileReference; fileEncoding = 4; lastKnownFileType = sourcecode.swift; path = "LayoutGuide+SnapKit.swift"; sourceTree = "<group>"; };
 		EE4910971B19A26000A54F1F /* ViewController+SnapKit.swift */ = {isa = PBXFileReference; fileEncoding = 4; lastKnownFileType = sourcecode.swift; path = "ViewController+SnapKit.swift"; sourceTree = "<group>"; };
 		EE94F6081AC0F10A008767FF /* UIKit.framework */ = {isa = PBXFileReference; lastKnownFileType = wrapper.framework; name = UIKit.framework; path = System/Library/Frameworks/UIKit.framework; sourceTree = SDKROOT; };
 		EE94F60A1AC0F10F008767FF /* AppKit.framework */ = {isa = PBXFileReference; lastKnownFileType = wrapper.framework; name = AppKit.framework; path = Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.10.sdk/System/Library/Frameworks/AppKit.framework; sourceTree = DEVELOPER_DIR; };
@@ -251,6 +253,7 @@
 			isa = PBXGroup;
 			children = (
 				EECDB3661AC0C95C006BBC11 /* SnapKit.h */,
+				6BA7C9E91D7472B3006586BC /* LayoutGuide+SnapKit.swift */,
 				EEFCF32E1AD926AE00A425FA /* SnapKit.swift */,
 				EECDB35E1AC0C95C006BBC11 /* Constraint.swift */,
 				EEFCF3311AD9432400A425FA /* ConstraintDescription.swift */,
@@ -604,6 +607,7 @@
 			files = (
 				EECDB36C1AC0C9A6006BBC11 /* Constraint.swift in Sources */,
 				EEFCF32F1AD926AE00A425FA /* SnapKit.swift in Sources */,
+				6BA7C9EA1D7472B3006586BC /* LayoutGuide+SnapKit.swift in Sources */,
 				EEFCF32C1AD910B900A425FA /* Debugging.swift in Sources */,
 				EECDB3701AC0C9A6006BBC11 /* ConstraintRelation.swift in Sources */,
 				EEFCF3321AD9432400A425FA /* ConstraintDescription.swift in Sources */,

Source/ConstraintDescription.swift

@@ -95,6 +95,10 @@ public protocol ConstraintDescriptionRelatable: class {
     
     func equalTo(other: ConstraintItem) -> ConstraintDescriptionEditable
     func equalTo(other: View) -> ConstraintDescriptionEditable
+    #if os(iOS) || os(tvOS)
+    @available(iOS 9.0, *)
+    func equalTo(other: UILayoutGuide) -> ConstraintDescriptionEditable
+    #endif
     func equalToSuperview() -> ConstraintDescriptionEditable
     @available(iOS 7.0, *)
     func equalTo(other: LayoutSupport) -> ConstraintDescriptionEditable
@@ -232,6 +236,14 @@ internal class ConstraintDescription: ConstraintDescriptionExtendable, Constrain
     internal func equalTo(other: View) -> ConstraintDescriptionEditable {
         return self.constrainTo(other, relation: .Equal)
     }
+    
+    #if os(iOS) || os(tvOS)
+    @available(iOS 9.0, *)
+    internal func equalTo(other: UILayoutGuide) -> ConstraintDescriptionEditable {
+        return self.constrainTo(other, relation: .Equal)
+    }
+    #endif
+    
     internal func equalToSuperview() -> ConstraintDescriptionEditable {
         guard let superview = fromItem.view?.superview else {
             fatalError("equalToSuperview() requires the view have a superview before being set.")
@@ -598,6 +610,13 @@ internal class ConstraintDescription: ConstraintDescriptionExtendable, Constrain
         return constrainTo(ConstraintItem(object: other, attributes: ConstraintAttributes.None), relation: relation)
     }
     
+    #if os(iOS) || os(tvOS)
+    @available(iOS 9.0, *)
+    private func constrainTo(other: UILayoutGuide, relation: ConstraintRelation) -> ConstraintDescription {
+        return constrainTo(ConstraintItem(object: other, attributes: ConstraintAttributes.None), relation: relation)
+    }
+    #endif
+    
     @available(iOS 9.0, OSX 10.11, *)
     private func constrainTo(other: NSLayoutAnchor, relation: ConstraintRelation) -> ConstraintDescription {
         return constrainTo(ConstraintItem(object: other, attributes: ConstraintAttributes.None), relation: relation)

Source/ConstraintItem.swift

@@ -48,6 +48,13 @@ public class ConstraintItem {
     internal var layoutSupport: LayoutSupport? {
         return self.object as? LayoutSupport
     }
+    
+    #if os(iOS) || os(tvOS)
+    @available(iOS 9.0, *)
+    internal var layoutguide: UILayoutGuide? {
+        return self.object as? UILayoutGuide
+    }
+    #endif
 }
 
 

Source/LayoutGuide+SnapKit.swift

@@ -0,0 +1,91 @@
+//
+//  LayoutGuide+SnapKit.swift
+//  SnapKit
+//
+//  Created by Schumacher Peter on 29/08/16.
+//  Copyright © 2016 SnapKit Team. All rights reserved.
+//
+
+import UIKit
+
+/**
+ Used to expose public API on UILayoutGuide
+ */
+@available(iOS 9.0, *)
+public extension UILayoutGuide {
+    /// left edge
+    public var snp_left: ConstraintItem { return ConstraintItem(object: self, attributes: ConstraintAttributes.Left) }
+    
+    /// top edge
+    public var snp_top: ConstraintItem { return ConstraintItem(object: self, attributes: ConstraintAttributes.Top) }
+    
+    /// right edge
+    public var snp_right: ConstraintItem { return ConstraintItem(object: self, attributes: ConstraintAttributes.Right) }
+    
+    /// bottom edge
+    public var snp_bottom: ConstraintItem { return ConstraintItem(object: self, attributes: ConstraintAttributes.Bottom) }
+    
+    /// leading edge
+    public var snp_leading: ConstraintItem { return ConstraintItem(object: self, attributes: ConstraintAttributes.Leading) }
+    
+    /// trailing edge
+    public var snp_trailing: ConstraintItem { return ConstraintItem(object: self, attributes: ConstraintAttributes.Trailing) }
+    
+    /// width dimension
+    public var snp_width: ConstraintItem { return ConstraintItem(object: self, attributes: ConstraintAttributes.Width) }
+    
+    /// height dimension
+    public var snp_height: ConstraintItem { return ConstraintItem(object: self, attributes: ConstraintAttributes.Height) }
+    
+    /// centerX position
+    public var snp_centerX: ConstraintItem { return ConstraintItem(object: self, attributes: ConstraintAttributes.CenterX) }
+    
+    /// centerY position
+    public var snp_centerY: ConstraintItem { return ConstraintItem(object: self, attributes: ConstraintAttributes.CenterY) }
+    
+    /// baseline position
+    public var snp_baseline: ConstraintItem { return ConstraintItem(object: self, attributes: ConstraintAttributes.Baseline) }
+    
+    /// first baseline position
+    public var snp_firstBaseline: ConstraintItem { return ConstraintItem(object: self, attributes: ConstraintAttributes.FirstBaseline) }
+    
+    /// left margin
+    public var snp_leftMargin: ConstraintItem { return ConstraintItem(object: self, attributes: ConstraintAttributes.LeftMargin) }
+    
+    /// right margin
+    public var snp_rightMargin: ConstraintItem { return ConstraintItem(object: self, attributes: ConstraintAttributes.RightMargin) }
+    
+    /// top margin
+    public var snp_topMargin: ConstraintItem { return ConstraintItem(object: self, attributes: ConstraintAttributes.TopMargin) }
+    
+    /// bottom margin
+    public var snp_bottomMargin: ConstraintItem { return ConstraintItem(object: self, attributes: ConstraintAttributes.BottomMargin) }
+    
+    /// leading margin
+    public var snp_leadingMargin: ConstraintItem { return ConstraintItem(object: self, attributes: ConstraintAttributes.LeadingMargin) }
+    
+    /// trailing margin
+    public var snp_trailingMargin: ConstraintItem { return ConstraintItem(object: self, attributes: ConstraintAttributes.TrailingMargin) }
+    
+    /// centerX within margins
+    public var snp_centerXWithinMargins: ConstraintItem { return ConstraintItem(object: self, attributes: ConstraintAttributes.CenterXWithinMargins) }
+    
+    /// centerY within margins
+    public var snp_centerYWithinMargins: ConstraintItem { return ConstraintItem(object: self, attributes: ConstraintAttributes.CenterYWithinMargins) }
+    
+    // top + left + bottom + right edges
+    public var snp_edges: ConstraintItem { return ConstraintItem(object: self, attributes: ConstraintAttributes.Edges) }
+    
+    // width + height dimensions
+    public var snp_size: ConstraintItem { return ConstraintItem(object: self, attributes: ConstraintAttributes.Size) }
+    
+    // centerX + centerY positions
+    public var snp_center: ConstraintItem { return ConstraintItem(object: self, attributes: ConstraintAttributes.Center) }
+    
+    // top + left + bottom + right margins
+    public var snp_margins: ConstraintItem { return ConstraintItem(object: self, attributes: ConstraintAttributes.Margins) }
+    
+    // centerX + centerY within margins
+    public var snp_centerWithinMargins: ConstraintItem { return ConstraintItem(object: self, attributes: ConstraintAttributes.CenterWithinMargins) }
+    
+}