imin_printer 0.4.0

A Flutter plugin for using imin printer sdk in Android

example/lib/main.dart

import 'package:flutter/material.dart';
import 'dart:async';
import 'package:flutter/services.dart';
import 'package:imin_printer/imin_printer.dart';
import 'package:imin_printer/enums.dart';
import 'package:imin_printer/imin_style.dart';

import 'package:fluttertoast/fluttertoast.dart';

void main() {
  runApp(const MyApp());
}

class MyApp extends StatefulWidget {
  const MyApp({super.key});

  @override
  State<MyApp> createState() => _MyAppState();
}

class _MyAppState extends State<MyApp> {
  final iminPrinter = IminPrinter();

  @override
  void initState() {
    super.initState();
  }

  @override
  Widget build(BuildContext context) {
    return MaterialApp(
      home: Scaffold(
        appBar: AppBar(
          title: const Text('Imin Printer Example'),
        ),
        body: SingleChildScrollView(
            child: Column(
          children: [
            Padding(
              padding: const EdgeInsets.symmetric(horizontal: 20),
              child: Row(
                  mainAxisAlignment: MainAxisAlignment.spaceAround,
                  children: [
                    ElevatedButton(
                        child: const Text('init Printer'),
                        onPressed: () async {
                          await iminPrinter.initPrinter();
                        }),
                    ElevatedButton(
                        onPressed: () async {
                          String? state = await iminPrinter.getPrinterStatus();
                          Fluttertoast.showToast(
                              msg: state ?? '',
                              toastLength: Toast.LENGTH_LONG,
                              gravity: ToastGravity.BOTTOM, // 消息框弹出的位置
                              // timeInSecForIos: 1,  // 消息框持续的时间（目前的版本只有ios有效）
                              backgroundColor: Colors.red,
                              textColor: Colors.white,
                              fontSize: 16.0);
                        },
                        child: const Text('getPrinterStatus')),
                  ]),
            ),
            Padding(
              padding: const EdgeInsets.symmetric(horizontal: 20),
              child: Row(
                  mainAxisAlignment: MainAxisAlignment.spaceAround,
                  children: [
                    ElevatedButton(
                        onPressed: () async {
                          await iminPrinter.printText(
                              'iMin advocates the core values of "Integrity, Customer First, Invention&Creation, Patience”, using cloud-based technology to help businesses to get  access to the Internet and also increases their data base, by providing more solutions so that their business can take a step further. Through their efficiency enhancement, cost improvement, service innovation, and  better services for consumers, these aspect will drives the entire industry development.',
                              style: IminTextStyle(wordWrap: true));
                        },
                        child: const Text('Text in word wrap')),
                    ElevatedButton(
                        onPressed: () async {
                          await iminPrinter.printText('居中',
                              style:
                                  IminTextStyle(align: IminPrintAlign.center));
                        },
                        child: const Text('text alignment'))
                  ]),
            ),
            const Divider(),
            Padding(
              padding: const EdgeInsets.symmetric(horizontal: 20),
              child: Row(
                mainAxisAlignment: MainAxisAlignment.spaceAround,
                children: [
                  ElevatedButton(
                      onPressed: () async {
                        await iminPrinter.printText('测试字体大小',
                            style: IminTextStyle(fontSize: 80));
                      },
                      child: const Text('Text fontSize')),
                  ElevatedButton(
                      onPressed: () async {
                        await iminPrinter.printText('测试打印字体',
                            style: IminTextStyle(
                                typeface: IminTypeface.typefaceMonospace));
                      },
                      child: const Text('Text typeface'))
                ],
              ),
            ),
            Padding(
              padding: const EdgeInsets.symmetric(horizontal: 20),
              child: Row(
                mainAxisAlignment: MainAxisAlignment.spaceAround,
                children: [
                  ElevatedButton(
                      onPressed: () async {
                        await iminPrinter.printText('测试打印字体样式',
                            style: IminTextStyle(
                                fontStyle: IminFontStyle.boldItalic));
                      },
                      child: const Text('Text style')),
                  ElevatedButton(
                      onPressed: () async {
                        Uint8List byte = await _getImageFromAsset(
                            'assets/images/doraemon.jpg');
                        await iminPrinter.printSingleBitmap(byte);
                      },
                      child: const Text('print singleBitmap'))
                ],
              ),
            ),
            Padding(
              padding: const EdgeInsets.symmetric(horizontal: 20),
              child: Row(
                mainAxisAlignment: MainAxisAlignment.spaceAround,
                children: [
                  ElevatedButton(
                      onPressed: () async {
                        await iminPrinter.printText(
                            'iMin is a service provider who focuses mainly on the field of business intelligence, bringing IoT, AI and cloud service to the business sector. We develop and provide a wide range of intelligent commercial hardware solutions which help businesses to run more cost effectively.');
                      },
                      child: const Text('print Text')),
                  ElevatedButton(
                      onPressed: () async {
                        Uint8List byte =
                            await readFileBytes('assets/images/logo.png');
                        await iminPrinter.printSingleBitmap(byte,
                            alignment: IminPrintAlign.right);
                      },
                      child: const Text('print singleBitmap in align'))
                ],
              ),
            ),
            Padding(
              padding: const EdgeInsets.symmetric(horizontal: 20),
              child: Row(
                mainAxisAlignment: MainAxisAlignment.spaceAround,
                children: [
                  ElevatedButton(
                      onPressed: () async {
                        await iminPrinter.printQrCode('https://www.imin.sg',
                            qrCodeStyle: IminQrCodeStyle(
                                errorCorrectionLevel:
                                    IminQrcodeCorrectionLevel.levelH,
                                qrSize: 4,
                                align: IminPrintAlign.right));
                      },
                      child: const Text('print QrCode'))
                ],
              ),
            )
          ],
        )),
      ),
    );
  }
}

Future<Uint8List> readFileBytes(String path) async {
  ByteData fileData = await rootBundle.load(path);
  Uint8List fileUnit8List = fileData.buffer
      .asUint8List(fileData.offsetInBytes, fileData.lengthInBytes);
  return fileUnit8List;
}

Future<Uint8List> _getImageFromAsset(String iconPath) async {
  return await readFileBytes(iconPath);
}