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flutter_zxing
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added new api functions

pull/3/head
Khoren Markosyan 3 years ago
parent
e380cb4af7
commit
dbca853024
7 changed files with 88 additions and 98 deletions
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  1. 8
      example/pubspec.lock
  2. 62
      lib/flutter_zxing.dart
  3. 2
      pubspec.yaml
  4. 54
      zxscanner/lib/pages/help_page.dart
  5. 26
      zxscanner/lib/pages/scanner_page.dart
  6. 30
      zxscanner/pubspec.lock
  7. 4
      zxscanner/pubspec.yaml

8
example/pubspec.lock
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@ -28,14 +28,14 @@ packages:
name: camera name: camera
url: "https://pub.dartlang.org" url: "https://pub.dartlang.org"
source: hosted source: hosted
version: "0.9.7" version: "0.9.7+1"
camera_platform_interface: camera_platform_interface:
dependency: transitive dependency: transitive
description: description:
name: camera_platform_interface name: camera_platform_interface
url: "https://pub.dartlang.org" url: "https://pub.dartlang.org"
source: hosted source: hosted
version: "2.1.6" version: "2.2.0"
camera_web: camera_web:
dependency: transitive dependency: transitive
description: description:
@ -141,7 +141,7 @@ packages:
path: ".." path: ".."
relative: true relative: true
source: path source: path
version: "0.1.2" version: "0.1.3"
font_awesome_flutter: font_awesome_flutter:
dependency: "direct main" dependency: "direct main"
description: description:
@ -183,7 +183,7 @@ packages:
name: image_picker_android name: image_picker_android
url: "https://pub.dartlang.org" url: "https://pub.dartlang.org"
source: hosted source: hosted
version: "0.8.4+13" version: "0.8.5"
image_picker_for_web: image_picker_for_web:
dependency: transitive dependency: transitive
description: description:

62
lib/flutter_zxing.dart
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@ -3,9 +3,11 @@ import 'dart:ffi';
import 'dart:io'; import 'dart:io';
import 'dart:typed_data'; import 'dart:typed_data';
import 'package:camera/camera.dart';
import 'package:ffi/ffi.dart'; import 'package:ffi/ffi.dart';
import 'package:flutter/foundation.dart'; import 'package:flutter/foundation.dart';
import 'package:flutter/services.dart'; import 'package:flutter/services.dart';
import 'package:image/image.dart' as imglib;
import 'generated_bindings.dart'; import 'generated_bindings.dart';
@ -31,8 +33,64 @@ class FlutterZxing {
logEnabled = enabled; logEnabled = enabled;
} }
static String version() { /// Returns a version of the zxing library
return bindings.version().cast<Utf8>().toDartString(); static String version() => bindings.version().cast<Utf8>().toDartString();
/// Reads barcode from String image path
static Future<CodeResult?> readImagePathString(
String path, {
int format = Format.Any,
int cropWidth = 0,
int cropHeight = 0,
}) =>
readImagePath(XFile(path),
format: format, cropWidth: cropWidth, cropHeight: cropHeight);
/// Reads barcode from XFile image path
static Future<CodeResult?> readImagePath(
XFile path, {
int format = Format.Any,
int cropWidth = 0,
int cropHeight = 0,
}) async {
final Uint8List imageBytes = await path.readAsBytes();
imglib.Image? image = imglib.decodeImage(imageBytes);
if (image == null) {
return null;
}
return readBarcode(
image.getBytes(format: imglib.Format.luminance),
format,
image.width,
image.height,
cropWidth,
cropHeight,
);
}
/// Reads barcode from image url
static Future<CodeResult?> readImageUrl(
String url, {
int format = Format.Any,
int cropWidth = 0,
int cropHeight = 0,
}) async {
final Uint8List imageBytes =
(await NetworkAssetBundle(Uri.parse(url)).load(url))
.buffer
.asUint8List();
imglib.Image? image = imglib.decodeImage(imageBytes);
if (image == null) {
return null;
}
return readBarcode(
image.getBytes(format: imglib.Format.luminance),
format,
image.width,
image.height,
cropWidth,
cropHeight,
);
} }
static CodeResult readBarcode(Uint8List bytes, int format, int width, static CodeResult readBarcode(Uint8List bytes, int format, int width,

2
pubspec.yaml
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@ -16,7 +16,7 @@ dependencies:
image: ^3.2.0 image: ^3.2.0
dev_dependencies: dev_dependencies:
ffigen: ^5.0.0 # dart run ffigen ffigen: ^6.0.0 # dart run ffigen
flutter_lints: ^2.0.1 flutter_lints: ^2.0.1
flutter_test: flutter_test:
sdk: flutter sdk: flutter

54
zxscanner/lib/pages/help_page.dart
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@ -1,10 +1,5 @@
import 'dart:typed_data';
import 'package:flutter/material.dart'; import 'package:flutter/material.dart';
import 'package:flutter_markdown/flutter_markdown.dart'; import 'package:flutter_markdown/flutter_markdown.dart';
import 'package:flutter_zxing/flutter_zxing.dart';
import 'package:font_awesome_flutter/font_awesome_flutter.dart';
import 'package:image/image.dart' as imglib;
import 'package:url_launcher/url_launcher_string.dart'; import 'package:url_launcher/url_launcher_string.dart';
import 'package:zxscanner/configs/constants.dart'; import 'package:zxscanner/configs/constants.dart';
import 'package:zxscanner/widgets/common_widgets.dart'; import 'package:zxscanner/widgets/common_widgets.dart';
@ -52,22 +47,7 @@ class HelpPage extends StatelessWidget {
BuildContext context, { BuildContext context, {
String? title, String? title,
String? body, String? body,
int format = Format.QRCode,
String? qrText,
int width = 100,
int height = 100,
}) { }) {
Uint8List? bytes;
if (qrText != null) {
final result =
FlutterZxing.encodeBarcode(qrText, width, height, format, 5, 0);
if (result.isValidBool) {
final img = imglib.Image.fromBytes(width, height, result.bytes);
bytes = Uint8List.fromList(imglib.encodeJpg(img));
} else {
debugPrint('Error: ${result.errorMessage}');
}
}
return Card( return Card(
margin: const EdgeInsets.all(8.0), margin: const EdgeInsets.all(8.0),
child: Padding( child: Padding(
@ -77,12 +57,6 @@ class HelpPage extends StatelessWidget {
dividerColor: Colors.transparent, dividerColor: Colors.transparent,
), ),
child: ExpansionTile( child: ExpansionTile(
leading: bytes != null
? Image.memory(bytes, width: 100)
: const SizedBox(
width: 100,
child: Icon(FontAwesomeIcons.barcode, size: 50),
),
title: Text(title ?? ''), title: Text(title ?? ''),
children: [ children: [
Padding( Padding(
@ -108,8 +82,6 @@ QR codes are highly versatile and cover a range of applications because they sto
* Can be used free of charge – specifications are available from the Swiss-based International Organization for Standardization. * Can be used free of charge – specifications are available from the Swiss-based International Organization for Standardization.
* Automatic error correction recovers damage to up to 30%, depending on the correction level chosen. * Automatic error correction recovers damage to up to 30%, depending on the correction level chosen.
""", """,
format: Format.QRCode,
qrText: '123456789012',
), ),
createSlide( createSlide(
context, context,
@ -123,8 +95,6 @@ Due to its small size and large storage capacity, the Data Matrix code is most f
* Often engraved on items via Direct Part Marking (DPM). * Often engraved on items via Direct Part Marking (DPM).
* Readable even with low contrast. * Readable even with low contrast.
""", """,
format: Format.DataMatrix,
qrText: '123456789012',
), ),
createSlide( createSlide(
context, context,
@ -138,8 +108,6 @@ The transportation sector accounts for most Aztec Code use cases. Lufthansa airl
* Enables both high data density and up to 95% error tolerance. * Enables both high data density and up to 95% error tolerance.
* Pattern resembles a top-down view of an Aztec pyramid * Pattern resembles a top-down view of an Aztec pyramid
""", """,
format: Format.Aztec,
qrText: '123456789012',
), ),
createSlide( createSlide(
context, context,
@ -152,7 +120,6 @@ Ticketing, travel, and logistics are some of the most common areas of applicatio
* High data density, yet with adjustable length and width. * High data density, yet with adjustable length and width.
* Striking redundancy: Up to 40% damage can be compensated. * Striking redundancy: Up to 40% damage can be compensated.
""", """,
format: Format.PDF417,
), ),
createSlide( createSlide(
context, context,
@ -163,9 +130,6 @@ The Universal Product Code (UPC) is perfect for retail, warehousing, and distrib
* One-dimensional barcode that stores exactly 12 numeric characters, which form the Global Trade Item Number (GTIN). * One-dimensional barcode that stores exactly 12 numeric characters, which form the Global Trade Item Number (GTIN).
* The low data density makes it inadequate for encoding complex data. * The low data density makes it inadequate for encoding complex data.
""", """,
format: Format.UPCA,
qrText: '123456789012',
width: 200,
), ),
createSlide( createSlide(
context, context,
@ -177,9 +141,6 @@ The most important areas of application for EAN codes are retail, distribution,
* The last digit is a mod10 checksum. * The last digit is a mod10 checksum.
* EAN codes are defined as GS1 standards. * EAN codes are defined as GS1 standards.
""", """,
format: Format.EAN13,
qrText: '123456789012',
width: 200,
), ),
createSlide( createSlide(
context, context,
@ -191,9 +152,6 @@ Unlike other common barcodes, Code 39 can also encode letters, which makes it in
* The low data density makes it unsuitable for tiny items. * The low data density makes it unsuitable for tiny items.
* Standardized as ANSI MH 10.8 M-1983 and ANSI/AIM BC1/1995. * Standardized as ANSI MH 10.8 M-1983 and ANSI/AIM BC1/1995.
""", """,
format: Format.Code39,
qrText: '123456789012',
width: 200,
), ),
createSlide( createSlide(
context, context,
@ -203,9 +161,6 @@ This barcode symbology can store alphanumeric characters. Its main user, Canada
* One-dimensional barcode encoding 43 alphanumeric characters and 5 special characters. * One-dimensional barcode encoding 43 alphanumeric characters and 5 special characters.
* In Code 93 Extended, combinations of those characters can represent all 128 ASCII characters. * In Code 93 Extended, combinations of those characters can represent all 128 ASCII characters.
""", """,
format: Format.Code93,
qrText: '123456789012',
width: 200,
), ),
createSlide( createSlide(
context, context,
@ -216,9 +171,6 @@ The Code 128 barcode is most frequently used in transporting goods, especially t
* Can encode all ASCII characters, including special characters. * Can encode all ASCII characters, including special characters.
* High data density compared to other 1D barcode formats. * High data density compared to other 1D barcode formats.
""", """,
format: Format.Code128,
qrText: '123456789012',
width: 200,
), ),
createSlide( createSlide(
context, context,
@ -231,9 +183,6 @@ The Codabar barcode is only used in blood banks, libraries, and in laboratories.
* Stores up to 16 characters. * Stores up to 16 characters.
* Newer barcode types can store more data in less space. * Newer barcode types can store more data in less space.
""", """,
format: Format.Codabar,
qrText: '123456789012',
width: 200,
), ),
createSlide( createSlide(
context, context,
@ -244,9 +193,6 @@ ITF barcodes are often described as Standard Distribution Codes. They are freque
* High data density, as data is stored in both the bars and the gaps.  * High data density, as data is stored in both the bars and the gaps. 
* Compared to other linear barcodes, more data can be accommodated using the same label size. * Compared to other linear barcodes, more data can be accommodated using the same label size.
""", """,
format: Format.ITF,
qrText: '123456789012',
width: 200,
), ),
]; ];
} }

26
zxscanner/lib/pages/scanner_page.dart
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@ -1,5 +1,3 @@
import 'dart:typed_data';
import 'package:flutter/material.dart'; import 'package:flutter/material.dart';
import 'package:flutter_zxing/flutter_zxing.dart'; import 'package:flutter_zxing/flutter_zxing.dart';
import 'package:zxscanner/models/models.dart'; import 'package:zxscanner/models/models.dart';
@ -7,7 +5,6 @@ import 'package:zxscanner/utils/db_service.dart';
import 'package:zxscanner/utils/extensions.dart'; import 'package:zxscanner/utils/extensions.dart';
import 'package:font_awesome_flutter/font_awesome_flutter.dart'; import 'package:font_awesome_flutter/font_awesome_flutter.dart';
import 'package:image_picker/image_picker.dart'; import 'package:image_picker/image_picker.dart';
import 'package:image/image.dart' as imglib;
class ScannerPage extends StatefulWidget { class ScannerPage extends StatefulWidget {
const ScannerPage({ const ScannerPage({
@ -52,23 +49,12 @@ class _ScannerPageState extends State<ScannerPage> {
} }
readCodeFromImage(XFile file) async { readCodeFromImage(XFile file) async {
final Uint8List bytes = await file.readAsBytes(); final CodeResult? result = await FlutterZxing.readImagePath(file);
imglib.Image? image = imglib.decodeImage(bytes); if (result != null && result.isValidBool) {
if (image != null) { addCode(result);
final CodeResult result = FlutterZxing.readBarcode( } else {
image.getBytes(format: imglib.Format.luminance), if (!mounted) return;
Format.Any, context.showToast('No code found');
image.width,
image.height,
0,
0,
);
if (result.isValidBool) {
addCode(result);
} else {
if (!mounted) return;
context.showToast('No code found');
}
} }
} }

30
zxscanner/pubspec.lock
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@ -70,7 +70,7 @@ packages:
name: build_resolvers name: build_resolvers
url: "https://pub.dartlang.org" url: "https://pub.dartlang.org"
source: hosted source: hosted
version: "2.0.8" version: "2.0.9"
build_runner: build_runner:
dependency: "direct dev" dependency: "direct dev"
description: description:
@ -105,14 +105,14 @@ packages:
name: camera name: camera
url: "https://pub.dartlang.org" url: "https://pub.dartlang.org"
source: hosted source: hosted
version: "0.9.7" version: "0.9.7+1"
camera_platform_interface: camera_platform_interface:
dependency: transitive dependency: transitive
description: description:
name: camera_platform_interface name: camera_platform_interface
url: "https://pub.dartlang.org" url: "https://pub.dartlang.org"
source: hosted source: hosted
version: "2.1.6" version: "2.2.0"
camera_web: camera_web:
dependency: transitive dependency: transitive
description: description:
@ -168,7 +168,7 @@ packages:
name: convert name: convert
url: "https://pub.dartlang.org" url: "https://pub.dartlang.org"
source: hosted source: hosted
version: "3.0.1" version: "3.0.2"
convex_bottom_bar: convex_bottom_bar:
dependency: "direct main" dependency: "direct main"
description: description:
@ -196,7 +196,7 @@ packages:
name: cupertino_icons name: cupertino_icons
url: "https://pub.dartlang.org" url: "https://pub.dartlang.org"
source: hosted source: hosted
version: "1.0.4" version: "1.0.5"
dart_style: dart_style:
dependency: transitive dependency: transitive
description: description:
@ -269,7 +269,7 @@ packages:
name: flutter_markdown name: flutter_markdown
url: "https://pub.dartlang.org" url: "https://pub.dartlang.org"
source: hosted source: hosted
version: "0.6.10+1" version: "0.6.10+2"
flutter_mobx: flutter_mobx:
dependency: "direct main" dependency: "direct main"
description: description:
@ -300,7 +300,7 @@ packages:
path: ".." path: ".."
relative: true relative: true
source: path source: path
version: "0.1.2" version: "0.1.3"
font_awesome_flutter: font_awesome_flutter:
dependency: "direct main" dependency: "direct main"
description: description:
@ -391,7 +391,7 @@ packages:
name: image_picker_android name: image_picker_android
url: "https://pub.dartlang.org" url: "https://pub.dartlang.org"
source: hosted source: hosted
version: "0.8.4+13" version: "0.8.5"
image_picker_for_web: image_picker_for_web:
dependency: transitive dependency: transitive
description: description:
@ -545,7 +545,7 @@ packages:
name: path_provider_linux name: path_provider_linux
url: "https://pub.dartlang.org" url: "https://pub.dartlang.org"
source: hosted source: hosted
version: "2.1.6" version: "2.1.7"
path_provider_macos: path_provider_macos:
dependency: transitive dependency: transitive
description: description:
@ -566,7 +566,7 @@ packages:
name: path_provider_windows name: path_provider_windows
url: "https://pub.dartlang.org" url: "https://pub.dartlang.org"
source: hosted source: hosted
version: "2.0.6" version: "2.0.7"
petitparser: petitparser:
dependency: transitive dependency: transitive
description: description:
@ -629,7 +629,7 @@ packages:
name: share_plus name: share_plus
url: "https://pub.dartlang.org" url: "https://pub.dartlang.org"
source: hosted source: hosted
version: "4.0.4" version: "4.0.6"
share_plus_linux: share_plus_linux:
dependency: transitive dependency: transitive
description: description:
@ -643,28 +643,28 @@ packages:
name: share_plus_macos name: share_plus_macos
url: "https://pub.dartlang.org" url: "https://pub.dartlang.org"
source: hosted source: hosted
version: "3.0.0" version: "3.0.1"
share_plus_platform_interface: share_plus_platform_interface:
dependency: transitive dependency: transitive
description: description:
name: share_plus_platform_interface name: share_plus_platform_interface
url: "https://pub.dartlang.org" url: "https://pub.dartlang.org"
source: hosted source: hosted
version: "3.0.2" version: "3.0.3"
share_plus_web: share_plus_web:
dependency: transitive dependency: transitive
description: description:
name: share_plus_web name: share_plus_web
url: "https://pub.dartlang.org" url: "https://pub.dartlang.org"
source: hosted source: hosted
version: "3.0.0" version: "3.0.1"
share_plus_windows: share_plus_windows:
dependency: transitive dependency: transitive
description: description:
name: share_plus_windows name: share_plus_windows
url: "https://pub.dartlang.org" url: "https://pub.dartlang.org"
source: hosted source: hosted
version: "3.0.0" version: "3.0.1"
shared_preferences: shared_preferences:
dependency: "direct main" dependency: "direct main"
description: description:

4
zxscanner/pubspec.yaml
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@ -9,7 +9,7 @@ environment:
dependencies: dependencies:
convex_bottom_bar: ^3.0.0 convex_bottom_bar: ^3.0.0
cupertino_icons: ^1.0.2 cupertino_icons: ^1.0.5
flex_color_scheme: ^5.0.1 flex_color_scheme: ^5.0.1
flutter: flutter:
sdk: flutter sdk: flutter
@ -27,7 +27,7 @@ dependencies:
intl: ^0.17.0 intl: ^0.17.0
mobx: ^2.0.7 mobx: ^2.0.7
path_provider: ^2.0.10 path_provider: ^2.0.10
share_plus: ^4.0.4 share_plus: ^4.0.6
shared_preferences: ^2.0.15 shared_preferences: ^2.0.15
url_launcher: ^6.1.2 url_launcher: ^6.1.2

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