Merge pull request #2 from neoneye/master

Margin around the stackview

Author: gurhub

Example/ScrollableStackView/VerticalLayoutViewController.swift

@@ -21,6 +21,7 @@ class VerticalLayoutViewController: UIViewController {
         scrollable.stackView.distribution = .fillProportionally
         scrollable.stackView.alignment = .center
         scrollable.stackView.axis = .vertical
+        scrollable.scrollView.layoutMargins = UIEdgeInsets(top: 15, left: 15, bottom: 15, right: 15)
         view.addSubview(scrollable)
 
         for _ in 1 ..< 23 {

ScrollableStackView/Classes/ScrollableStackView.swift

@@ -27,6 +27,7 @@ import UIKit
         // ScrollView
         scrollView = UIScrollView(frame: self.frame)
         scrollView.translatesAutoresizingMaskIntoConstraints = false
+        scrollView.layoutMargins = .zero
         self.addSubview(scrollView)
 
         // StackView
@@ -114,14 +115,17 @@ import UIKit
         super.updateConstraints()
 
         if (!didSetupConstraints) {
-            self.addConstraint(NSLayoutConstraint(item: scrollView, attribute: .left, relatedBy: .equal, toItem: self, attribute: .left, multiplier: 1.0, constant: 0))
-            self.addConstraint(NSLayoutConstraint(item: scrollView, attribute: .right, relatedBy: .equal, toItem: self, attribute: .right, multiplier: 1.0, constant: 0))
+            addConstraint(NSLayoutConstraint(item: scrollView, attribute: .left, relatedBy: .equal, toItem: self, attribute: .left, multiplier: 1.0, constant: 0))
+            addConstraint(NSLayoutConstraint(item: scrollView, attribute: .right, relatedBy: .equal, toItem: self, attribute: .right, multiplier: 1.0, constant: 0))
 
-            self.addConstraint(NSLayoutConstraint(item: scrollView, attribute: .bottom, relatedBy: .equal, toItem: self, attribute: .bottom, multiplier: 1.0, constant: 0))
-            self.addConstraint(NSLayoutConstraint(item: scrollView, attribute: .top, relatedBy: .equal, toItem: self, attribute: .top, multiplier: 1.0, constant: 0))
+            addConstraint(NSLayoutConstraint(item: scrollView, attribute: .bottom, relatedBy: .equal, toItem: self, attribute: .bottom, multiplier: 1.0, constant: 0))
+            addConstraint(NSLayoutConstraint(item: scrollView, attribute: .top, relatedBy: .equal, toItem: self, attribute: .top, multiplier: 1.0, constant: 0))
 
-            self.addConstraints(NSLayoutConstraint.constraints(withVisualFormat: "H:[stackView(==scrollView)]", options: .alignAllCenterX, metrics: nil, views: ["stackView": stackView, "scrollView": scrollView]))
-            self.addConstraints(NSLayoutConstraint.constraints(withVisualFormat: "V:|[stackView]|", options: .alignAllCenterX, metrics: nil, views: ["stackView": stackView]))
+            addConstraints(NSLayoutConstraint.constraints(withVisualFormat: "V:|-[stackView]-|", options: [], metrics: nil, views: ["stackView": stackView]))
+            
+            let margins = scrollView.layoutMarginsGuide
+            stackView.leadingAnchor.constraint(equalTo: margins.leadingAnchor).isActive = true
+            stackView.trailingAnchor.constraint(equalTo: margins.trailingAnchor).isActive = true
 
             didSetupConstraints = true
         }