qr_code_dart_scan

Breaking: the models moved to qr_code_dart_decoder

ScanResult and BarcodeFormat are now owned by qr_code_dart_decoder (0.3.0) and re-exported here, so both packages speak the same types and zxing_lib is gone from this package's dependencies. Importing from package:qr_code_dart_scan/qr_code_dart_scan.dart keeps working unchanged.

• ScanResult.corners is now List<Point<double>> (dart:math) instead of List<Offset>. The decoder is a pure Dart package and cannot depend on dart:ui. New toOffset/toOffsets extensions bridge them:

  // before
  CustomPaint(painter: MyPainter(result.corners));            // List<Offset>
  
  // now
  CustomPaint(painter: MyPainter(result.corners.toOffsets));  // List<Offset>
  

• QRCodeDartScanDecoder no longer speaks zxing_lib. decodeCameraImage and decodeFile return ScanResult? instead of Result?, completing the migration started in 0.13.0.

Bug fix (from qr_code_dart_decoder 0.3.0)

• Camera decoding now honours the formats you pass to QRCodeDartScanView/QRCodeDartScanDecoder. The format list was accepted but never reached the reader, so live scanning could return a barcode in a format you had not asked for. If you were relying on that leak, widen formats explicitly.

Breaking: zxing_lib no longer leaks into the scanner API

onCapture, onResultInterceptor and formats now use the package's own types, so apps do not need a zxing_lib dependency to consume them.

• result.numBits and result.resultMetadata were dropped; nothing in the package used them.
• Passing an unsupported format is now a compile error instead of a runtime Exception.
• ScanResult keeps identity equality on purpose, so scanning the same code twice still notifies.
• The low-level QRCodeDartScanDecoder still speaks zxing_lib types; only the scanner layer was migrated.

• Result points accuracy: Fixed resultPoints coordinates to accurately match the QR code position in the camera preview.
• Dynamic rotation handling: Automatically detects camera orientation (landscape/portrait) and applies the correct transformation.
• Bounding box generation: Result points now always form a perfect quadrilateral (4 corners) regardless of the number of points detected.
• Example enhancement: Added visual overlay in the example app to display detected QR code boundaries with lines and points.

• Performance improvements: Reduced scan interval default from 1s to 200ms (5x faster detection).
• Memory optimization: Update qr_code_dart_decoder to 0.2.0 with major performance improvements:
  • Zero-copy data transfer between isolates (~4MB saved per frame)
  • Y plane only processing (~1.5MB saved per frame)
  • Memory leak fix in results list
  • Block-wise image rotation (30-40% faster)
  • Blur detection to skip unprocessable frames (20-30% CPU savings)
• Detection speed: Average detection time reduced from 2-3s to ~0.4-0.6s (5-7x faster).
• Decode optimization: Changed to tryHarder: true on first attempt for better success rate.

• Add image stream watchdog to detect and handle native camera errors when stream stops responding.
• Add imageStreamTimeout parameter to configure watchdog timeout (default 2 seconds).

• Fix issue CameraException(Disposed CameraController, buildPreview() was called on a disposed CameraController.)

• Adds focusPoint in QRCodeDartScanView to set the focus point for the camera preview.
• Performance improvements.

• Adds focusPoint in QRCodeDartScanView to set the focus point for the camera preview.

• Performance improvements.

• Update qr_code_dart_decoder to 0.1.2.

• Adds croppingStrategy in QRCodeDartScanView to crop the image before decode.
• Update qr_code_dart_decoder to 0.1.1.
• remove scanInvertedQRCode in QRCodeDartScanView. Now it is always true.

• Adds croppingStrategy in QRCodeDartScanView to crop the image before decode.
• Update qr_code_dart_decoder to 0.1.1.
• remove scanInvertedQRCode in QRCodeDartScanView. Now it is always true.

• Little improvements in QRCodeDartScanView.
• Increment some dependencies

• Adds lockCaptureOrientation default to DeviceOrientation.portraitUp in QRCodeDartScanView.
• Decode improvements. Now it use package qr_code_dart_decoder.
• Adds cropRect in QRCodeDartScanView to crop the image before decode.

• Fix exception: CameraException(Uninitialized CameraController, startImageStream() was called on an uninitialized CameraController.);

• Adds videoBitrate and fps in QRCodeDartScanView.

• Adds imageDecodeOrientation in QRCodeDartScanView to force read image in landscape or portrait orientation.

• update README.md

• Rename param forceReadPortrait to forceReadLandscape. Read image portrait by default. If forceReadLandscape is true, the image will be read in landscape mode, helpful to read itf code.
• Fix IOS camera orientation.

• Adds onCameraError in QRCodeDartScanView.

• Adds onCameraError in QRCodeDartScanView.

• Update dependencies.

• Fix issue #30. Adds forceReadPortrait in QRCodeDartScanView to force read portrait image.

• adds methods toggleFlash,setFlash,setFlashAuto in QRCodeDartScanController.

• Fix stopImageStream exception.

• Adds method stopScan and startScan in QRCodeDartScanController.
• Adds get isLiveScan.
• Fix changeCamera exception.

• Fix issue #28
• Fix issue #29

• Camera key improvments
• Update camera pluggin to 0.11.0
• Performance improvements. Now using pool of isolates to process in live.
• Adds support to itf.

• Fix camera preview scale.

• Remove debug prints

• fix app life circle issue 26. Thanks Ömral Cörüt !

• QRCodeDartScanController Improvements
• Adds Future<void> changeCamera(TypeCamera typeCamera) method in QRCodeDartScanController.
• Adds intervalScan param in QRCodeDartScanView.
• Adds onResultInterceptor param in QRCodeDartScanView.

• Fix issue #18. Thanks MateusLucasDaSilva!

• Handle with didChangeAppLifecycleState.
• Fix issue #15. Thanks thierrylee!

• Update dependencies.
• Adds the method dispose in QRCodeDartScanController

• Fix issue #11
• Fix AspectRatio
• Update dependencies.

• Fix issue #9

• Fix issue #7. Thanks so much philseeley!

• return resolutionPreset default to QRCodeDartScanResolutionPreset.medium
• removre debug prints.

• Update dependencies.

• Adds scan by picture
• Export decoder
• Improvements in QRCodeDartScanController
• Improvements in project structure

• fix problem camera dispose.

• update camera.
• update zxing_lib.
• update image.

• update camera
• Adds param resolutionPreset and child in QRCodeDartScanView.

• update camera, zxing_lib and image

• update camera to 0.9.4+5

• downgrade camera. Awaiting fix issue #90070.

• update camera
• update image.

• rename scanQRCodeInverted to scanInvertedQRCode
• improvements aspectRatio.

• add setScanEnabled in controller.
• add other formats: QR_CODE,AZTEC,DATA_MATRIX,PDF_417,CODE_39,CODE_93,CODE_128,EAN_8,EAN_13.

• Improvements performance

• First version

• Update README