Fix crop restoration (#242)

comparing cropped size in the actual image to the aspect ratio for
cropping UI will be different, as using floating values.

Sources/BrightroomEngine/Core/EditingCrop.swift

@@ -77,6 +77,8 @@ public struct EditingCrop: Equatable {
   /// The angle that specifies rotation for the image.
   public var rotation: Rotation = .angle_0
 
+  public private(set) var _usedAspectRatio: PixelAspectRatio?
+
   /// An angle to rotate in addition to the specified rotation.
   public var adjustmentAngle: AdjustmentAngle = .zero
 
@@ -177,6 +179,8 @@ public struct EditingCrop: Equatable {
       size: maxSize
     )
 
+    self._usedAspectRatio = newAspectRatio
+
     self.cropExtent = Self.fittingRect(
       rect: proposed,
       in: imageSize,
@@ -199,12 +203,16 @@ public struct EditingCrop: Equatable {
      - calculated fitting image size with ratio: (1745.0, 0.0, 4373.0, 5247.0)
      - (4373.0 : 5247.0) -> 0.8334286259
      */
-    guard PixelAspectRatio(cropExtent.size) != newAspectRatio else {
+    guard _usedAspectRatio != newAspectRatio else {
       return
     }
     updateCropExtent(toFitAspectRatio: newAspectRatio)
   }
 
+  public mutating func purgeAspectRatio() {
+    _usedAspectRatio = nil
+  }
+
   /**
    Updates the crop extent to fit bounding box that comes from Vision.framework.
    */

Sources/BrightroomUI/Shared/Components/Crop/CropView.swift

@@ -575,6 +575,8 @@ public final class CropView: UIView, UIScrollViewDelegate {
       $0.preferredAspectRatio = ratio
       if let ratio = ratio {
         $0.proposedCrop?.updateCropExtentIfNeeded(toFitAspectRatio: ratio)
+      } else {
+        $0.proposedCrop?.purgeAspectRatio()
       }
       $0.layoutVersion += 1
     }