Pointer effects

App/Common UI/ReliefButton.swift

@@ -70,6 +70,11 @@ class ReliefButton: UIButton
         addSubview(backgroundView)
         
         traitCollectionDidChange(nil)
+        
+        pointerStyleProvider = { (button, pointerEffect, pointerShape) -> UIPointerStyle? in
+            let preview = UITargetedPreview(view: button)
+            return UIPointerStyle(effect: .lift(preview), shape: pointerShape)
+        }
     }
     
     required init?(coder: NSCoder) {

App/Common UI/SegmentedReliefButton.swift

@@ -14,6 +14,11 @@ class SegmentedReliefButton: ReliefButton
         didSet  { children.forEach { addSubview($0) }; setNeedsLayout() }
     }
     
+    override var isPointerInteractionEnabled: Bool {
+        set { children.forEach { $0.isPointerInteractionEnabled = newValue } }
+        get { children.first?.isPointerInteractionEnabled ?? false }
+    }
+    
     private let backgroundsContainerView = UIView(frame: .zero)
     private var childrenHighlighObservations: [NSKeyValueObservation] = []
     
@@ -30,7 +35,8 @@ class SegmentedReliefButton: ReliefButton
     }
     
     override var isHighlighted: Bool {
-        didSet {}
+        // Does not highlight. Only children do. 
+        set {} get { false }
     }
     
     required init?(coder: NSCoder) {

App/Tabs/TabBarView.swift

@@ -29,6 +29,7 @@ class TabView: UIControl
         
         addSubview(closeButton)
         closeButton.setImage(UIImage(systemName: "xmark.square.fill"), for: .normal)
+        closeButton.isPointerInteractionEnabled = true
         closeButton.imageView?.contentMode = .center
         closeButton.tintColor = .label
         

App/Titlebar and URL Bar/ToolbarButtonContainerView.swift

@@ -14,6 +14,10 @@ class ToolbarButtonContainerView: UIView
     public var numberOfButtonViews: Int { buttonViews.count }
     
     func addButtonView(_ button: UIView) {
+        if let asButton = button as? UIButton {
+            asButton.isPointerInteractionEnabled = true
+        }
+        
         buttonViews.append(button)
         addSubview(button)
         setNeedsLayout()

App/Titlebar and URL Bar/URLBar.swift

@@ -40,6 +40,10 @@ class URLBar: ReliefButton
         didSet { updateProgressIndicator() }
     }
     
+    override var isPointerInteractionEnabled: Bool {
+        get { false } set {}
+    }
+    
     private let fadeMaskView = UIImageView(frame: .zero)
     
     private let progressIndicatorView = ProgressIndicatorView()
@@ -84,6 +88,7 @@ class URLBar: ReliefButton
         
         refreshButton.tintColor = .secondaryLabel
         refreshButton.setImage(refreshImage, for: .normal)
+        refreshButton.isPointerInteractionEnabled = true
         addSubview(refreshButton)
         
         errorButton.backgroundColor = .systemRed
@@ -92,10 +97,12 @@ class URLBar: ReliefButton
         errorButton.titleLabel?.font = UIFont.boldSystemFont(ofSize: 11.0)
         errorButton.setTitleColor(.white, for: .normal)
         errorButton.setTitle("ERR", for: .normal)
+        errorButton.isPointerInteractionEnabled = true
         addSubview(errorButton)
         
         documentButton.tintColor = .secondaryLabel
         documentButton.setImage(documentImage, for: .normal)
+        documentButton.isPointerInteractionEnabled = true
         addSubview(documentButton)
         
         documentSeparatorView.backgroundColor = .secondarySystemFill
@@ -155,6 +162,10 @@ class URLBar: ReliefButton
         self.setNeedsLayout()
     }
     
+    override func setBackgroundInverted(_ inverted: Bool) {
+        // no-op
+    }
+    
     override var intrinsicContentSize: CGSize {
         let preferredHeight = CGFloat(34)
         return CGSize(width: 1000.0, height: preferredHeight)