doc: add changelog

@@ -3,6 +3,9 @@ You can provide a path to controller.analyzeImage(path) in order to scan a local
 Check out the example app to see how you can use the image_picker plugin to retrieve a photo from
 the gallery. Please keep in mind that this feature is only supported on Android and iOS.
 
+Another feature that has been added is a format selector!
+Just keep in mind that iOS for now only supports 1 selected barcode.
+
 ## 0.1.3
 * Fixed crash after asking permission. [#29](https://github.com/juliansteenbakker/mobile_scanner/issues/29)
 * Upgraded cameraX from 1.1.0-beta01 to 1.1.0-beta02

@@ -17,7 +17,7 @@ class _BarcodeScannerWithControllerState
 
   MobileScannerController controller = MobileScannerController(
     torchEnabled: true,
-    // formats: [BarcodeFormat.ean13, BarcodeFormat.ean8]
+    // formats: [BarcodeFormat.qrCode]
     // facing: CameraFacing.front,
   );
 

@@ -24,12 +24,9 @@ class MobileScanner extends StatefulWidget {
   final BoxFit fit;
 
   /// Create a [MobileScanner] with a [controller], the [controller] must has been initialized.
-  const MobileScanner({
-    Key? key,
-    this.onDetect,
-    this.controller,
-    this.fit = BoxFit.cover
-  }) : super(key: key);
+  const MobileScanner(
+      {Key? key, this.onDetect, this.controller, this.fit = BoxFit.cover})
+      : super(key: key);
 
   @override
   State<MobileScanner> createState() => _MobileScannerState();

@@ -43,6 +43,10 @@ class MobileScannerController {
   late final ValueNotifier<CameraFacing> cameraFacingState;
   final Ratio? ratio;
   final bool? torchEnabled;
+
+  /// If provided, the scanner will only detect those specific formats.
+  ///
+  /// WARNING: On iOS, only 1 format is supported.
   final List<BarcodeFormat>? formats;
 
   CameraFacing facing;
@@ -52,7 +56,10 @@ class MobileScannerController {
   Stream<Barcode> get barcodes => barcodesController.stream;
 
   MobileScannerController(
-      {this.facing = CameraFacing.back, this.ratio, this.torchEnabled, this.formats}) {
+      {this.facing = CameraFacing.back,
+      this.ratio,
+      this.torchEnabled,
+      this.formats}) {
     // In case a new instance is created before calling dispose()
     if (_controllerHashcode != null) {
       stop();
@@ -146,7 +153,6 @@ class MobileScannerController {
       } else if (Platform.isIOS || Platform.isMacOS) {
         arguments['formats'] = formats!.map((e) => e.rawValue).toList();
       }
-
     }
 
     // Start the camera with arguments

@@ -554,7 +554,6 @@ enum BarcodeFormat {
 }
 
 extension BarcodeValue on BarcodeFormat {
-
   int get rawValue {
     switch (this) {
       case BarcodeFormat.unknown:
@@ -589,7 +588,6 @@ extension BarcodeValue on BarcodeFormat {
         return 4096;
     }
   }
-
 }
 
 /// Address type constants.