Small change.

Author: pelekon

README.md

@@ -32,6 +32,7 @@ You can provide a variety of extra customization options to `CodeScannerView` in
 
 - `scanMode` can be `.once` to scan a single code, `.oncePerCode` to scan many codes but only trigger finding each unique code once, and `.continuous` will keep finding codes until you dismiss the scanner. Default: `.once`.
 - `scanInterval` controls how fast individual codes should be scanned (in seconds) when running in `.continuous` scan mode.
+- `zoomFactor` controls zoom of used capture device. By default it is nil to not interfere with videoCaptureDevice.
 - `showViewfinder` determines whether to show a box-like viewfinder over the UI. Default: false.
 - `simulatedData` allows you to provide some test data to use in Simulator, when real scanning isn’t available. Default: an empty string.
 - `shouldVibrateOnSuccess` allows you to determine whether device should vibrate when a code is found. Default: true.

Sources/CodeScanner/CodeScanner.swift

@@ -81,7 +81,7 @@ public struct CodeScannerView: UIViewControllerRepresentable {
     public let scanMode: ScanMode
     public let manualSelect: Bool
     public let scanInterval: Double
-    public let zoomFactor: CGFloat
+    public let zoomFactor: CGFloat?
     public let showViewfinder: Bool
     public let useViewfinderAsRectOfInterest: Bool
     public let requiresPhotoOutput: Bool
@@ -99,7 +99,7 @@ public struct CodeScannerView: UIViewControllerRepresentable {
         scanMode: ScanMode = .once,
         manualSelect: Bool = false,
         scanInterval: Double = 2.0,
-        zoomFactor: CGFloat = 1,
+        zoomFactor: CGFloat? = nil,
         showViewfinder: Bool = false,
         useViewfinderAsRectOfInterest: Bool = false,
         requiresPhotoOutput: Bool = true,

Sources/CodeScanner/ScannerViewController.swift

@@ -401,7 +401,7 @@ extension CodeScannerView {
         }
         #endif
 
-        func updateViewController(isTorchOn: Bool, zoomFactor: CGFloat, isGalleryPresented: Bool, isManualCapture: Bool, isManualSelect: Bool) {
+        func updateViewController(isTorchOn: Bool, zoomFactor: CGFloat?, isGalleryPresented: Bool, isManualCapture: Bool, isManualSelect: Bool) {
             guard let videoCaptureDevice = parentView.videoCaptureDevice ?? fallbackVideoCaptureDevice else {
                 return
             }
@@ -415,7 +415,7 @@ extension CodeScannerView {
             showManualSelectButton(isManualSelect)
             #endif
 
-            let needsZoomUpdate = videoCaptureDevice.videoZoomFactor != zoomFactor
+            let needsZoomUpdate = zoomFactor != nil && videoCaptureDevice.videoZoomFactor != zoomFactor
 
             guard videoCaptureDevice.hasTorch || needsZoomUpdate else { return }
 
@@ -425,7 +425,7 @@ extension CodeScannerView {
                 videoCaptureDevice.torchMode = isTorchOn ? .on : .off
             }
 
-            if needsZoomUpdate {
+            if needsZoomUpdate, let zoomFactor {
                 let newFactor = max(
                     videoCaptureDevice.minAvailableVideoZoomFactor,
                     min(videoCaptureDevice.maxAvailableVideoZoomFactor, zoomFactor)