init

.gitignore

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+# Miscellaneous
+*.class
+*.log
+*.pyc
+*.swp
+.DS_Store
+.atom/
+.buildlog/
+.history
+.svn/
+
+# IntelliJ related
+*.iml
+*.ipr
+*.iws
+.idea/
+
+# The .vscode folder contains launch configuration and tasks you configure in
+# VS Code which you may wish to be included in version control, so this line
+# is commented out by default.
+#.vscode/
+
+# Flutter/Dart/Pub related
+**/doc/api/
+.dart_tool/
+.flutter-plugins
+.flutter-plugins-dependencies
+.packages
+.pub-cache/
+.pub/
+build/
+
+# Android related
+**/android/**/gradle-wrapper.jar
+**/android/.gradle
+**/android/captures/
+**/android/gradlew
+**/android/gradlew.bat
+**/android/local.properties
+**/android/**/GeneratedPluginRegistrant.java
+
+# iOS/XCode related
+**/ios/**/*.mode1v3
+**/ios/**/*.mode2v3
+**/ios/**/*.moved-aside
+**/ios/**/*.pbxuser
+**/ios/**/*.perspectivev3
+**/ios/**/*sync/
+**/ios/**/.sconsign.dblite
+**/ios/**/.tags*
+**/ios/**/.vagrant/
+**/ios/**/DerivedData/
+**/ios/**/Icon?
+**/ios/**/Pods/
+**/ios/**/.symlinks/
+**/ios/**/profile
+**/ios/**/xcuserdata
+**/ios/.generated/
+**/ios/Flutter/App.framework
+**/ios/Flutter/Flutter.framework
+**/ios/Flutter/Flutter.podspec
+**/ios/Flutter/Generated.xcconfig
+**/ios/Flutter/app.flx
+**/ios/Flutter/app.zip
+**/ios/Flutter/flutter_assets/
+**/ios/Flutter/flutter_export_environment.sh
+**/ios/ServiceDefinitions.json
+**/ios/Runner/GeneratedPluginRegistrant.*
+
+# Exceptions to above rules.
+!**/ios/**/default.mode1v3
+!**/ios/**/default.mode2v3
+!**/ios/**/default.pbxuser
+!**/ios/**/default.perspectivev3
+!/packages/flutter_tools/test/data/dart_dependencies_test/**/.packages

.metadata

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+# This file tracks properties of this Flutter project.
+# Used by Flutter tool to assess capabilities and perform upgrades etc.
+#
+# This file should be version controlled and should not be manually edited.
+
+version:
+  revision: 0b8abb4724aa590dd0f429683339b1e045a1594d
+  channel: stable
+
+project_type: package

CHANGELOG.md

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+## [0.0.1] - TODO: Add release date.
+
+* TODO: Describe initial release.

LICENSE

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+TODO: Add your license here.

README.md

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+# esc_pos_bluetooth
+
+The library allows to print receipts using an ESC/POS thermal WiFi/Ethernet printer.
+
+[[pub.dev page]](https://pub.dev/packages/esc_pos_printer)
+| [[Documentation]](https://pub.dev/documentation/esc_pos_printer/latest/)
+
+It can be used in [Flutter](https://flutter.dev/) or pure [Dart](https://dart.dev/) projects. For Flutter projects, both Android and iOS are supported.
+
+To scan for printers in your network, consider using [ping_discover_network](https://pub.dev/packages/ping_discover_network) package. Note that most of the ESC/POS printers by default listen on port 9100.
+
+**Here are some [printers tested with this library](printers.md). Please add your models you have tested to maintain and improve this library and help others to choose the right printer.**
+
+## Main Features
+
+* Connect to Wi-Fi / Ethernet printers
+* Simple text printing using *text* method
+* Tables printing using *row* method
+* Text styling:
+  * size, align, bold, reverse, underline, different fonts, turn 90°
+* Print images
+* Print barcodes
+  * UPC-A, UPC-E, JAN13 (EAN13), JAN8 (EAN8), CODE39, ITF (Interleaved 2 of 5), CODABAR (NW-7)
+* Paper cut (partial, full)
+* Beeping (with different duration)
+* Paper feed, reverse feed
+
+**Note**: Your printer may not support some of the presented features (especially for underline styles, partial/full paper cutting, reverse feed, ...).
+
+## Getting started (Generate a ticket)
+```dart
+Ticket testTicket() {
+  final Ticket ticket = Ticket(PaperSize.mm80);
+
+  ticket.text(
+      'Regular: aA bB cC dD eE fF gG hH iI jJ kK lL mM nN oO pP qQ rR sS tT uU vV wW xX yY zZ');
+  ticket.text('Special 1: àÀ èÈ éÉ ûÛ üÜ çÇ ôÔ',
+      styles: PosStyles(codeTable: PosCodeTable.westEur));
+  ticket.text('Special 2: blåbærgrød',
+      styles: PosStyles(codeTable: PosCodeTable.westEur));
+
+  ticket.text('Bold text', styles: PosStyles(bold: true));
+  ticket.text('Reverse text', styles: PosStyles(reverse: true));
+  ticket.text('Underlined text',
+      styles: PosStyles(underline: true), linesAfter: 1);
+  ticket.text('Align left', styles: PosStyles(align: PosTextAlign.left));
+  ticket.text('Align center', styles: PosStyles(align: PosTextAlign.center));
+  ticket.text('Align right',
+      styles: PosStyles(align: PosTextAlign.right), linesAfter: 1);
+
+  ticket.text('Text size 200%',
+      styles: PosStyles(
+        height: PosTextSize.size2,
+        width: PosTextSize.size2,
+      ));
+
+  ticket.feed(2);
+  ticket.cut();
+  return ticket;
+}
+```
+Print a table row:
+
+```dart
+ticket.row([
+    PosColumn(
+      text: 'col3',
+      width: 3,
+      styles: PosStyles(align: PosTextAlign.center, underline: true),
+    ),
+    PosColumn(
+      text: 'col6',
+      width: 6,
+      styles: PosStyles(align: PosTextAlign.center, underline: true),
+    ),
+    PosColumn(
+      text: 'col3',
+      width: 3,
+      styles: PosStyles(align: PosTextAlign.center, underline: true),
+    ),
+  ]);
+```
+
+Print an image:
+
+```dart
+import 'dart:io';
+import 'package:image/image.dart';
+
+const String filename = './logo.png';
+final Image image = decodeImage(File(filename).readAsBytesSync());
+// Using (ESC *) command
+ticket.image(image);
+// Using an alternative obsolette (GS v 0) command
+ticket.imageRaster(image);
+```
+
+Print a barcode:
+```dart
+final List<int> barData = [1, 2, 3, 4, 5, 6, 7, 8, 9, 0, 4];
+ticket.barcode(Barcode.upcA(barData));
+```
+
+## Getting Started (Bluetooth printer)
+
+```dart
+PrinterBluetoothManager printerManager = PrinterBluetoothManager();
+
+printerManager.scanResults.listen((printers) async {
+  // store found printers
+});
+printerManager.startScan(Duration(seconds: 4));
+
+// ...
+
+printerManager.selectPrinter(printer);
+final PosPrintResult res = await printerManager.printTicket(testTicket());
+
+print('Print result: ${res.msg}');
+```
+
+For more details, check the demo project *example/blue*.
+
+## Test print
+<img src="https://github.com/andrey-ushakov/esc_pos_printer/blob/master/example/receipt.jpg?raw=true" alt="test receipt" height="500"/>
+
+## Support
+If this package was helpful, a cup of coffee would be highly appreciated :)
+
+[<img src="https://az743702.vo.msecnd.net/cdn/kofi2.png?v=2" width="200">](https://ko-fi.com/andreydev)

lib/esc_pos_bluetooth.dart

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+library esc_pos_bluetooth;
+
+/// A Calculator.
+class Calculator {
+  /// Returns [value] plus 1.
+  int addOne(int value) => value + 1;
+}

pubspec.yaml

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+name: esc_pos_bluetooth
+description: A new Flutter package project.
+version: 0.0.1
+author:
+homepage:
+
+environment:
+  sdk: ">=2.1.0 <3.0.0"
+
+dependencies:
+  flutter:
+    sdk: flutter
+
+dev_dependencies:
+  flutter_test:
+    sdk: flutter
+
+# For information on the generic Dart part of this file, see the
+# following page: https://dart.dev/tools/pub/pubspec
+
+# The following section is specific to Flutter.
+flutter:
+
+  # To add assets to your package, add an assets section, like this:
+  # assets:
+  #  - images/a_dot_burr.jpeg
+  #  - images/a_dot_ham.jpeg
+  #
+  # For details regarding assets in packages, see
+  # https://flutter.dev/assets-and-images/#from-packages
+  #
+  # An image asset can refer to one or more resolution-specific "variants", see
+  # https://flutter.dev/assets-and-images/#resolution-aware.
+
+  # To add custom fonts to your package, add a fonts section here,
+  # in this "flutter" section. Each entry in this list should have a
+  # "family" key with the font family name, and a "fonts" key with a
+  # list giving the asset and other descriptors for the font. For
+  # example:
+  # fonts:
+  #   - family: Schyler
+  #     fonts:
+  #       - asset: fonts/Schyler-Regular.ttf
+  #       - asset: fonts/Schyler-Italic.ttf
+  #         style: italic
+  #   - family: Trajan Pro
+  #     fonts:
+  #       - asset: fonts/TrajanPro.ttf
+  #       - asset: fonts/TrajanPro_Bold.ttf
+  #         weight: 700
+  #
+  # For details regarding fonts in packages, see
+  # https://flutter.dev/custom-fonts/#from-packages

test/esc_pos_bluetooth_test.dart

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+import 'package:flutter_test/flutter_test.dart';
+
+import 'package:esc_pos_bluetooth/esc_pos_bluetooth.dart';
+
+void main() {
+  test('adds one to input values', () {
+    final calculator = Calculator();
+    expect(calculator.addOne(2), 3);
+    expect(calculator.addOne(-7), -6);
+    expect(calculator.addOne(0), 1);
+    expect(() => calculator.addOne(null), throwsNoSuchMethodError);
+  });
+}