added EncodeParams, Params renamed to DecodeParams

example/lib/main.dart

@@ -203,7 +203,7 @@ class ScanFromGalleryWidget extends StatelessWidget {
     if (file != null) {
       final Code? result = await zx.readBarcodeImagePath(
         file,
-        params: Params(tryInverted: true),
+        params: DecodeParams(tryInverted: true),
       );
       if (result != null && result.isValid) {
         onScan?.call(result);

lib/flutter_zxing.dart

@@ -20,13 +20,10 @@ abstract class Zxing {
   void setLogEnabled(bool enabled) {}
   String barcodeFormatName(int format) => '';
 
-  Encode encodeBarcode(
+  /// Creates barcode from the given contents
-    String contents, {
+  Encode encodeBarcode({
-    int format = Format.qrCode,
+    required String contents,
-    int width = 300,
+    required EncodeParams params,
-    int height = 300,
-    int margin = 0,
-    int eccLevel = 0,
   });
 
   /// Starts reading barcode from the camera
@@ -38,25 +35,25 @@ abstract class Zxing {
   /// Reads barcode from the camera
   Future<Code> processCameraImage(
     CameraImage image, {
-    Params? params,
+    DecodeParams? params,
   });
 
   /// Reads barcode from String image path
   Future<Code?> readBarcodeImagePathString(
     String path, {
-    Params? params,
+    DecodeParams? params,
   });
 
   /// Reads barcode from XFile image path
   Future<Code?> readBarcodeImagePath(
     XFile path, {
-    Params? params,
+    DecodeParams? params,
   });
 
   /// Reads barcode from image url
   Future<Code?> readBarcodeImageUrl(
     String url, {
-    Params? params,
+    DecodeParams? params,
   });
 
 // Reads barcode from Uint8List image bytes
@@ -64,25 +61,25 @@ abstract class Zxing {
     Uint8List bytes, {
     required int width,
     required int height,
-    Params? params,
+    DecodeParams? params,
   });
 
   /// Reads barcodes from String image path
   Future<List<Code>> readBarcodesImagePathString(
     String path, {
-    Params? params,
+    DecodeParams? params,
   });
 
   /// Reads barcodes from XFile image path
   Future<List<Code>> readBarcodesImagePath(
     XFile path, {
-    Params? params,
+    DecodeParams? params,
   });
 
   /// Reads barcodes from image url
   Future<List<Code>> readBarcodesImageUrl(
     String url, {
-    Params? params,
+    DecodeParams? params,
   });
 
   /// Reads barcodes from Uint8List image bytes
@@ -90,6 +87,6 @@ abstract class Zxing {
     Uint8List bytes, {
     required int width,
     required int height,
-    Params? params,
+    DecodeParams? params,
   });
 }

lib/src/logic/barcode_reader.dart

@@ -3,7 +3,7 @@ part of 'zxing.dart';
 /// Reads barcode from String image path
 Future<Code?> zxingReadBarcodeImagePathString(
   String path, {
-  Params? params,
+  DecodeParams? params,
 }) =>
     zxingReadBarcodeImagePath(
       XFile(path),
@@ -13,7 +13,7 @@ Future<Code?> zxingReadBarcodeImagePathString(
 /// Reads barcode from XFile image path
 Future<Code?> zxingReadBarcodeImagePath(
   XFile path, {
-  Params? params,
+  DecodeParams? params,
 }) async {
   final Uint8List imageBytes = await path.readAsBytes();
   final imglib.Image? image = imglib.decodeImage(imageBytes);
@@ -31,7 +31,7 @@ Future<Code?> zxingReadBarcodeImagePath(
 /// Reads barcode from image url
 Future<Code?> zxingReadBarcodeImageUrl(
   String url, {
-  Params? params,
+  DecodeParams? params,
 }) async {
   final Uint8List imageBytes =
       (await NetworkAssetBundle(Uri.parse(url)).load(url)).buffer.asUint8List();
@@ -52,7 +52,7 @@ Code zxingReadBarcode(
   Uint8List bytes, {
   required int width,
   required int height,
-  Params? params,
+  DecodeParams? params,
 }) {
   Code result = _readBarcode(bytes, width, height, params);
   if (!result.isValid && params != null && params.tryInverted == true) {
@@ -67,7 +67,7 @@ Code _readBarcode(
   Uint8List bytes,
   int width,
   int height,
-  Params? params,
+  DecodeParams? params,
 ) =>
     bindings
         .readBarcode(

lib/src/logic/barcodes_reader.dart

@@ -3,7 +3,7 @@ part of 'zxing.dart';
 /// Reads barcodes from String image path
 Future<List<Code>> zxingReadBarcodesImagePathString(
   String path, {
-  Params? params,
+  DecodeParams? params,
 }) =>
     zxingReadBarcodesImagePath(
       XFile(path),
@@ -13,7 +13,7 @@ Future<List<Code>> zxingReadBarcodesImagePathString(
 /// Reads barcodes from XFile image path
 Future<List<Code>> zxingReadBarcodesImagePath(
   XFile path, {
-  Params? params,
+  DecodeParams? params,
 }) async {
   final Uint8List imageBytes = await path.readAsBytes();
   final imglib.Image? image = imglib.decodeImage(imageBytes);
@@ -31,7 +31,7 @@ Future<List<Code>> zxingReadBarcodesImagePath(
 /// Reads barcodes from image url
 Future<List<Code>> zxingReadBarcodesImageUrl(
   String url, {
-  Params? params,
+  DecodeParams? params,
 }) async {
   final Uint8List imageBytes =
       (await NetworkAssetBundle(Uri.parse(url)).load(url)).buffer.asUint8List();
@@ -52,7 +52,7 @@ List<Code> zxingReadBarcodes(
   Uint8List bytes, {
   required int width,
   required int height,
-  Params? params,
+  DecodeParams? params,
 }) {
   List<Code> results = _readBarcodes(bytes, width, height, params);
   if (results.isEmpty && params != null && params.tryInverted == true) {
@@ -67,7 +67,7 @@ List<Code> _readBarcodes(
   Uint8List bytes,
   int width,
   int height,
-  Params? params,
+  DecodeParams? params,
 ) {
   final CodeResults result = bindings.readBarcodes(
     bytes.allocatePointer(),

lib/src/logic/camera_stream.dart

@@ -13,9 +13,9 @@ void zxingStopCameraProcessing() => isolateUtils?.stopReadingBarcode();
 
 Future<Code> zxingProcessCameraImage(
   CameraImage image, {
-  Params? params,
+  DecodeParams? params,
 }) async {
-  final IsolateData isolateData = IsolateData(image, params ?? Params());
+  final IsolateData isolateData = IsolateData(image, params ?? DecodeParams());
   final Code result = await _inference(isolateData);
   return result;
 }

lib/src/models/params.dart

@@ -3,8 +3,8 @@ import 'dart:core';
 import 'format.dart';
 
 // Represents the parameters for decoding a barcode
-class Params {
+class DecodeParams {
-  Params({
+  DecodeParams({
     this.format = Format.any,
     this.cropWidth = 0,
     this.cropHeight = 0,
@@ -13,10 +13,47 @@ class Params {
     this.tryInverted = false,
   });
 
+  // Specify a set of BarcodeFormats that should be searched for, the default is all supported formats.
   int format;
+
+  // The width of the area of the image to scan, in pixels. If 0, the entire image width is used.
   int cropWidth;
+
+  // The height of the area of the image to scan, in pixels. If 0, the entire image height is used.
   int cropHeight;
+
+  // Spend more time to try to find a barcode; optimize for accuracy, not speed.
   bool tryHarder;
+
+  // Try to detect rotated code
   bool tryRotate;
+
+  // Try to detect inverted code
   bool tryInverted;
 }
+
+// Represents the parameters for encoding a barcode
+class EncodeParams {
+  EncodeParams({
+    this.format = Format.qrCode,
+    this.width = 120,
+    this.height = 120,
+    this.margin = 0,
+    this.eccLevel = 0,
+  });
+
+  // The barcode format to be generated. The default is QRCode.
+  int format;
+
+  // The width of the barcode image, in pixels.
+  int width;
+
+  // The height of the barcode image, in pixels.
+  int height;
+
+  // Used for all formats, sets the minimum number of quiet zone pixels
+  int margin;
+
+  // Used for Aztec, PDF417, and QRCode only, [0-8]
+  int eccLevel;
+}

lib/src/ui/reader_widget.dart

@@ -201,7 +201,7 @@ class _ReaderWidgetState extends State<ReaderWidget>
             widget.showScannerOverlay ? widget.cropPercent : 0;
         final int cropSize =
             (min(image.width, image.height) * cropPercent).round();
-        final Params params = Params(
+        final DecodeParams params = DecodeParams(
           format: widget.codeFormat,
           cropWidth: cropSize,
           cropHeight: cropSize,

lib/src/ui/writer_widget.dart

@@ -222,12 +222,14 @@ class _WriterWidgetState extends State<WriterWidget>
       final int margin = int.parse(_marginController.value.text);
       final int ecc = int.parse(_eccController.value.text);
       final Encode result = zx.encodeBarcode(
-        text,
+        contents: text,
+        params: EncodeParams(
           format: _codeFormat,
           width: width,
           height: height,
           margin: margin,
           eccLevel: ecc,
+        ),
       );
       String? error;
       if (result.isValid && result.data != null) {

lib/src/utils/isolate_utils.dart

@@ -16,7 +16,7 @@ class IsolateData {
     this.params,
   );
   CameraImage cameraImage;
-  Params params;
+  DecodeParams params;
 
   SendPort? responsePort;
 }

lib/zxing_mobile.dart

@@ -26,21 +26,17 @@ class ZxingMobile implements Zxing {
   String barcodeFormatName(int format) => zxingBarcodeFormatName(format);
 
   @override
-  Encode encodeBarcode(
+  Encode encodeBarcode({
-    String contents, {
+    required String contents,
-    int format = Format.qrCode,
+    required EncodeParams params,
-    int width = 300,
-    int height = 300,
-    int margin = 0,
-    int eccLevel = 0,
   }) =>
       zxingEncodeBarcode(
         contents,
-        format: format,
+        format: params.format,
-        width: width,
+        width: params.width,
-        height: height,
+        height: params.height,
-        margin: margin,
+        margin: params.margin,
-        eccLevel: eccLevel,
+        eccLevel: params.eccLevel,
       );
 
   @override
@@ -52,7 +48,7 @@ class ZxingMobile implements Zxing {
   @override
   Future<Code> processCameraImage(
     CameraImage image, {
-    Params? params,
+    DecodeParams? params,
   }) =>
       zxingProcessCameraImage(
         image,
@@ -62,7 +58,7 @@ class ZxingMobile implements Zxing {
   @override
   Future<Code?> readBarcodeImagePathString(
     String path, {
-    Params? params,
+    DecodeParams? params,
   }) =>
       zxingReadBarcodeImagePathString(
         path,
@@ -72,7 +68,7 @@ class ZxingMobile implements Zxing {
   @override
   Future<Code?> readBarcodeImagePath(
     XFile path, {
-    Params? params,
+    DecodeParams? params,
   }) =>
       zxingReadBarcodeImagePath(
         path,
@@ -82,7 +78,7 @@ class ZxingMobile implements Zxing {
   @override
   Future<Code?> readBarcodeImageUrl(
     String url, {
-    Params? params,
+    DecodeParams? params,
   }) =>
       zxingReadBarcodeImageUrl(
         url,
@@ -94,7 +90,7 @@ class ZxingMobile implements Zxing {
     Uint8List bytes, {
     required int width,
     required int height,
-    Params? params,
+    DecodeParams? params,
   }) =>
       zxingReadBarcode(
         bytes,
@@ -106,7 +102,7 @@ class ZxingMobile implements Zxing {
   @override
   Future<List<Code>> readBarcodesImagePathString(
     String path, {
-    Params? params,
+    DecodeParams? params,
   }) =>
       zxingReadBarcodesImagePathString(
         path,
@@ -116,7 +112,7 @@ class ZxingMobile implements Zxing {
   @override
   Future<List<Code>> readBarcodesImagePath(
     XFile path, {
-    Params? params,
+    DecodeParams? params,
   }) =>
       zxingReadBarcodesImagePath(
         path,
@@ -126,7 +122,7 @@ class ZxingMobile implements Zxing {
   @override
   Future<List<Code>> readBarcodesImageUrl(
     String url, {
-    Params? params,
+    DecodeParams? params,
   }) =>
       zxingReadBarcodesImageUrl(
         url,
@@ -138,7 +134,7 @@ class ZxingMobile implements Zxing {
     Uint8List bytes, {
     required int width,
     required int height,
-    Params? params,
+    DecodeParams? params,
   }) =>
       zxingReadBarcodes(
         bytes,

lib/zxing_web.dart

@@ -19,13 +19,9 @@ class ZxingWeb implements Zxing {
   String barcodeFormatName(int format) => 'Unsupported';
 
   @override
-  Encode encodeBarcode(
+  Encode encodeBarcode({
-    String contents, {
+    required String contents,
-    int format = Format.qrCode,
+    required EncodeParams params,
-    int width = 300,
-    int height = 300,
-    int margin = 0,
-    int eccLevel = 0,
   }) =>
       throw UnimplementedError();
 
@@ -38,28 +34,28 @@ class ZxingWeb implements Zxing {
   @override
   Future<Code> processCameraImage(
     CameraImage image, {
-    Params? params,
+    DecodeParams? params,
   }) =>
       throw UnimplementedError();
 
   @override
   Future<Code?> readBarcodeImagePathString(
     String path, {
-    Params? params,
+    DecodeParams? params,
   }) =>
       throw UnimplementedError();
 
   @override
   Future<Code?> readBarcodeImagePath(
     XFile path, {
-    Params? params,
+    DecodeParams? params,
   }) =>
       throw UnimplementedError();
 
   @override
   Future<Code?> readBarcodeImageUrl(
     String url, {
-    Params? params,
+    DecodeParams? params,
   }) =>
       throw UnimplementedError();
 
@@ -68,28 +64,28 @@ class ZxingWeb implements Zxing {
     Uint8List bytes, {
     required int width,
     required int height,
-    Params? params,
+    DecodeParams? params,
   }) =>
       throw UnimplementedError();
 
   @override
   Future<List<Code>> readBarcodesImagePathString(
     String path, {
-    Params? params,
+    DecodeParams? params,
   }) =>
       throw UnimplementedError();
 
   @override
   Future<List<Code>> readBarcodesImagePath(
     XFile path, {
-    Params? params,
+    DecodeParams? params,
   }) =>
       throw UnimplementedError();
 
   @override
   Future<List<Code>> readBarcodesImageUrl(
     String url, {
-    Params? params,
+    DecodeParams? params,
   }) =>
       throw UnimplementedError();
 
@@ -98,7 +94,7 @@ class ZxingWeb implements Zxing {
     Uint8List bytes, {
     required int width,
     required int height,
-    Params? params,
+    DecodeParams? params,
   }) =>
       throw UnimplementedError();
 }