qr_code_dart_scan changelog

0.14.0 #

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.

0.13.0 #

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.

before (`zxing_lib`)	now
`Result`	`ScanResult`
`BarcodeFormat`	`BarcodeFormat` (own enum, only the 10 supported formats)
`result.barcodeFormat`	`result.format`
`result.resultPoints` (`List<ResultPoint?>?`)	`result.corners` (`List<Offset>`, never null)
`result.timestamp` (`int` millis)	`result.timestamp` (`DateTime`)
`result.rawBytes` (`List<int>?`)	`result.rawBytes` (`Uint8List?`)

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.

0.12.2 #

Lifecycle race fix: Fixed CameraException(Disposed CameraController, startImageStream() was called on a disposed CameraController.) raised when the app was paused/resumed (or the scanner was popped) while the camera initialization was still in flight.
- Camera setup/teardown is now serialized and guarded by a generation token: an initialization that gets invalidated aborts at its next await and disposes the camera it created, instead of continuing against a dead controller.
- CameraController.value.isInitialized stays true after dispose(), so the package now tracks the disposed state itself rather than relying on that flag.
Camera leak fix: An aborted or replaced initialization no longer leaves a native camera session open (also fixes leaks on changeCamera).
Paused scan is preserved across the app lifecycle: if stopScan() was called and the user minimizes and reopens the app, the camera preview is restored but the image stream is not restarted. Use startScan() (or changeTypeScan(TypeScan.live)) to resume, and the new isScanPaused getter to query it. Mounting the view again resets it, so a reused controller never comes back mute; config() takes a new keepScanPaused flag for the lifecycle case.
QRCodeDartScanController.cameraController now returns null instead of a disposed instance, and a new isInitialized getter was added.
The controller can be safely reused after dispose(): calling config() again re-arms it.
The view now registers its state listener only once instead of on every resume, and no longer calls setState after being unmounted.
Fixed changeTypeScan(TypeScan.live) never restarting the image stream.
Errors from availableCameras(), takePicture() and setFocusPoint() are now caught and reported through onCameraError instead of escaping to the zone. startImageStream() failures are the deliberate exception: they are reported through onCameraError and re-surfaced to the zone, so they keep reaching crash reporting.

0.12.1 #

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.

0.12.0 #

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.

0.11.5 #

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).

0.11.4 #

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

0.11.3 #

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

0.11.2 #

Performance improvements.

0.11.1 #

Update qr_code_dart_decoder to 0.1.2.

0.11.0 #

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.

0.10.1 #

Little improvements in QRCodeDartScanView.
Increment some dependencies

0.10.0 #

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.

0.9.11 #

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

0.9.10 #

Adds videoBitrate and fps in QRCodeDartScanView.

0.9.9+1 #

update README.md

0.9.9 #

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

0.9.8 #

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.

0.9.7 #

Adds onCameraError in QRCodeDartScanView.

0.9.6 #

Update dependencies.

0.9.5 #

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

0.9.4 #

adds methods toggleFlash,setFlash,setFlashAuto in QRCodeDartScanController.

0.9.3 #

Fix stopImageStream exception.

0.9.2 #

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

0.9.1 #

Fix issue #28
Fix issue #29

0.9.0 #

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.

0.8.3 #

Fix camera preview scale.

0.8.2 #

Remove debug prints

0.8.1 #

fix app life circle issue 26. Thanks Ömral Cörüt !

0.8.0 #

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

0.7.7 #

Fix issue #18. Thanks MateusLucasDaSilva!

0.7.6 #

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

0.7.5 #

Update dependencies.
Adds the method dispose in QRCodeDartScanController

0.7.4 #

Fix issue #11
Fix AspectRatio
Update dependencies.

0.7.3 #

Fix issue #9

0.7.2 #

Fix issue #7. Thanks so much philseeley!

0.7.1 #

return resolutionPreset default to QRCodeDartScanResolutionPreset.medium
removre debug prints.

0.7.0 #

Update dependencies.

0.6.0 #

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

0.5.1 #

fix problem camera dispose.

0.5.0 #

update camera.
update zxing_lib.
update image.

0.4.1 #

update camera
Adds param resolutionPreset and child in QRCodeDartScanView.

0.4.0 #

update camera, zxing_lib and image

0.3.0 #

update camera to 0.9.4+5

0.2.1 #

downgrade camera. Awaiting fix issue #90070.

0.2.0 #

update camera
update image.

0.1.1 #

rename scanQRCodeInverted to scanInvertedQRCode
improvements aspectRatio.

0.1.0 #

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

0.0.2 #

Improvements performance

0.0.1+1 #

Update README

0.0.1 #

First version

qr_code_dart_scan 0.14.0 qr_code_dart_scan: ^0.14.0 copied to clipboard

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