Fix PlatformView layoutSubviews on AppKit

Author: insidegui

Sources/BuddyPlatform/PlatformTypes.swift

@@ -61,7 +61,7 @@ public typealias PlatformImage = NSImage
 public typealias PlatformColor = NSColor
 
 /// `UIView/NSView` alias for platform-agnostic code.
-public typealias PlatformView = NSView
+open class PlatformView: NSView { }
 
 /// `UIViewController/NSViewController` alias for platform-agnostic code.
 public typealias PlatformViewController = NSViewController

Sources/BuddyPlatform/PlatformView+Layer.swift

@@ -1,4 +1,5 @@
 #if !os(watchOS)
+import SwiftUI
 
 #if os(macOS)
 import AppKit
@@ -31,9 +32,13 @@ import AppKit
     /// - note: Check out ``PlatformWindowScene`` for details on how this behaves in AppKit.
     open var hostingWindowScene: PlatformWindowScene? { window?.screen }
 
+    open override func layout() {
+        layoutSubviews()
+    }
+
     /// This offers a place to override `layoutSubviews` for both UIKit and AppKit, since the method name on `NSView` is just `layout`.
     open func layoutSubviews() {
-        layout()
+        super.layout()
     }
 
     /// This offers a place to override `didMoveToSuperview` for both UIKit and AppKit, since the method name on `NSView` is different.
@@ -76,3 +81,48 @@ import UIKit
 #endif // os(macOS)
 
 #endif // !os(watchOS)
+
+#if DEBUG
+private final class TestView: PlatformView {
+    override func layoutSubviews() {
+        super.layoutSubviews()
+
+        let testLayer: CALayer
+
+        if let layer = platformLayer.sublayers?.first {
+            testLayer = layer
+        } else {
+            testLayer = CALayer()
+            testLayer.backgroundColor = PlatformColor.systemGreen.cgColor
+            platformLayer.addSublayer(testLayer)
+        }
+
+
+        CATransaction.begin()
+        CATransaction.setDisableActions(true)
+        CATransaction.setAnimationDuration(0)
+
+        testLayer.bounds = CGRect(
+            x: 0,
+            y: 0,
+            width: platformLayer.bounds.width * 0.5,
+            height: platformLayer.bounds.height * 0.5
+        )
+        testLayer.position = CGPoint(
+            x: platformLayer.frame.midX,
+            y: platformLayer.frame.midY
+        )
+
+        platformLayer.backgroundColor = PlatformColor.systemBlue.cgColor
+
+        CATransaction.commit()
+
+        print(#function, bounds, "testLayer:", testLayer.bounds)
+    }
+}
+
+@available(macOS 15.0, iOS 18.0, *)
+#Preview {
+    TestView(frame: .init(x: 0, y: 0, width: 200, height: 200))
+}
+#endif