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CHDataManagement/Extensions/NSSize+Scaling.swift

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+import Foundation
+
+extension NSSize {
+
+    /// Scales the current size to fit within the target size while maintaining the aspect ratio.
+    /// - Parameter targetSize: The size to fit into.
+    /// - Returns: A new `NSSize` that fits within the `targetSize`.
+    func scaledToFit(in targetSize: NSSize) -> NSSize {
+        guard self.width > 0 && self.height > 0 else {
+            return .zero // Avoid division by zero if the size is invalid.
+        }
+        
+        let widthScale = targetSize.width / self.width
+        let heightScale = targetSize.height / self.height
+        
+        let scale = min(widthScale, heightScale)
+        
+        return NSSize(width: self.width * scale, height: self.height * scale)
+    }
+
+    func scaledDown(to desiredWidth: CGFloat) -> NSSize {
+        if width == desiredWidth {
+            return self
+        }
+
+        if width < desiredWidth {
+            // Don't scale larger
+            return self
+        }
+
+        let height = (height * desiredWidth / width).rounded(.down)
+        return NSSize(width: desiredWidth, height: height)
+    }
+}
+
+extension NSSize {
+
+    var ratio: CGFloat {
+        guard height != 0 else {
+            return 0
+        }
+        return width / height
+    }
+}