Font size adjustment

2020-09-22 15:37:13 -07:00
parent 679e59c20b
commit 399e779371
7 changed files with 262 additions and 1 deletions
--- a/App/Utilities/StackView.swift
+++ b/App/Utilities/StackView.swift
@@ -0,0 +1,92 @@
+//
+//  StackView.swift
+//  App
+//
+//  Created by James Magahern on 9/22/20.
+//
+
+import UIKit
+
+class StackView: UIView
+{
+    var arrangedSubviews: [UIView] = []
+        { didSet { setNeedsLayout() } }
+    
+    var layoutDimension: UIAxis = .vertical
+    
+    convenience init(dimension: UIAxis) {
+        self.init(frame: .zero)
+        self.layoutDimension = dimension
+    }
+    
+    // Convenience
+    public func addArrangedSubview(_ view: UIView) {
+        addSubview(view)
+        arrangedSubviews.append(view)
+        setNeedsLayout()
+    }
+    
+    public func removeArrangedSubview(_ view: UIView) {
+        if view.superview == self {
+            view.removeFromSuperview()
+        }
+        
+        arrangedSubviews.removeAll { $0 == view }
+        setNeedsLayout()
+    }
+    
+    public func removeAllArrangedSubviews() {
+        arrangedSubviews.forEach { $0.removeFromSuperview() }
+        arrangedSubviews.removeAll()
+        setNeedsLayout()
+    }
+    
+    override func sizeThatFits(_ containerSize: CGSize) -> CGSize {
+        var size: CGSize = .zero
+        
+        if layoutDimension == .horizontal {
+            size.height = containerSize.height
+        } else {
+            size.width = containerSize.width
+        }
+        
+        var spaceRemaining = containerSize
+        for view in arrangedSubviews {
+            let viewSize = view.sizeThatFits(spaceRemaining)
+            if layoutDimension == .horizontal {
+                size.width += viewSize.width
+                spaceRemaining.width -= viewSize.width
+            } else {
+                size.height += viewSize.height
+                spaceRemaining.height -= viewSize.height
+            }
+        }
+        
+        return size
+    }
+    
+    override func layoutSubviews() {
+        super.layoutSubviews()
+        
+        var origin: CGPoint = CGPoint(x: safeAreaInsets.left, y: safeAreaInsets.top)
+        var spaceRemaining = bounds.size
+        for view in arrangedSubviews {
+            var viewSize = view.sizeThatFits(spaceRemaining)
+            
+            var offset: CGPoint = .zero
+            if layoutDimension == .horizontal {
+                offset.x = viewSize.width
+                viewSize.height = bounds.height
+                spaceRemaining.width -= viewSize.width
+            } else {
+                offset.y = viewSize.height
+                viewSize.width = bounds.width
+                spaceRemaining.height -= viewSize.height
+            }
+            
+            view.frame = CGRect(origin: origin, size: viewSize)
+            origin.x += offset.x
+            origin.y += offset.y
+        }
+    }
+}