ocr_data_extractor 0.0.28-dev

A Flutter package uses ocrkit mapped output to process and extract values. Image texts extracted and processed to return the special data wanted. Just pass the image path to the chosen function.

example/lib/main.dart

import 'package:artemis_camera_kit/artemis_camera_kit_controller.dart';
import 'package:artemis_camera_kit/artemis_camera_kit_platform_interface.dart';
import 'package:artemis_camera_kit/artemis_camera_kit_view.dart';
import 'package:example/consts.dart';
import 'package:example/line_drawing.dart';
import 'package:example/live_scan.dart';
import 'package:flutter/material.dart';
import 'package:flutter/services.dart';
import 'package:get/get.dart';
import 'package:image_picker/image_picker.dart';
import 'package:ocr_data_extractor/ocr_data_extractor.dart';
import 'classes.dart';

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

class MyApp extends StatelessWidget {
  const MyApp({Key? key}) : super(key: key);

  @override
  Widget build(BuildContext context) {
    return GetMaterialApp(
      title: 'Flutter Demo',
      theme: ThemeData(
        primarySwatch: Colors.blue,
      ),
      home: const MyTestPage(title: 'Back Up'),
    );
  }
}

class MyTestPage extends StatefulWidget {
  const MyTestPage({Key? key, required this.title}) : super(key: key);
  final String title;

  @override
  State<MyTestPage> createState() => _MyTestPageState();
}

class _MyTestPageState extends State<MyTestPage> {
  ArtemisCameraKitController ckc = ArtemisCameraKitController();
  final ImagePicker _picker = ImagePicker();
  bool loading = false;
  int selected = 0;
  int type = 0;
  List<String> results = ['', '', '', '', '', ''];
  List<OcrLine> beforeLines = [];
  List<OcrLine> afterLines = [];

  Future<void> _getPassengers() async {
    setState(() => loading = true);
    final pickedFile = await _picker.getImage(source: ImageSource.gallery, imageQuality: 50);
    OcrData? ocrData = await ckc.processImageFromPath(pickedFile?.path ?? '');
    List<Map<String, dynamic>> passengers =
        await OCRController().getPassengerListByOCRData(ocrData!, StaticLists.names);
    List<BackUpOCRPassenger> data = passengers.map((e) => BackUpOCRPassenger.fromJson(e)).toList();
    results = [
      OCRController().googleText,
      OCRController().sortedResult,
      '', '', '',
      // OCRController().sortedResultYAxis,
      // OCRController().sortedResultXAxis,
      // OCRController().sortedResultSlope,
      data.join("\n"),
    ];
    beforeLines = OCRController().beforeLines;
    afterLines = OCRController().afterLines;
    setState(() => loading = false);
  }

  Future<void> _takePicture() async {
    setState(() => loading = true);
    String? path = await Navigator.of(context)
        .push(MaterialPageRoute(builder: (context) => _TakePicture(controller: ckc)));
    if (path?.isNotEmpty ?? false) {
      OcrData? result = await ckc.processImageFromPath(path ?? '');
      List<Map<String, dynamic>> passengers =
          await OCRController().getPassengerListByOCRData(result!, StaticLists.names2);
      List<BackUpOCRPassenger> data = passengers.map((e) => BackUpOCRPassenger.fromJson(e)).toList();
      results = [
        OCRController().googleText,
        OCRController().sortedResult,
        '', '', '',
        // OCRController().sortedResultYAxis,
        // OCRController().sortedResultXAxis,
        // OCRController().sortedResultSlope,
        data.join("\n\n"),
      ];
    }
    beforeLines = OCRController().beforeLines;
    afterLines = OCRController().afterLines;
    setState(() => loading = false);
  }

  showLines(bool isRaw) {
    List<OcrLine> lines = isRaw ? beforeLines : afterLines;
    lines = OcrData.fromJson(OcrData(lines: lines, text: '').toJson()).lines;
    if (lines.isEmpty) {
      Get.snackbar('\nNothing to show!', "",
          duration: const Duration(seconds: 1), colorText: Colors.red, backgroundColor: Colors.white70);
      return;
    }
    Navigator.of(context).push(MaterialPageRoute(builder: (context) => LineDrawing(lines: [...lines])));
  }

  @override
  Widget build(BuildContext context) {
    String showingText = '';
    if (selected == 0) {
      showingText = results.first;
    } else if (selected == 1) {
      showingText = results[type + 1];
    } else {
      showingText = results.last;
    }
    return Scaffold(
      appBar: AppBar(
        title: Text(widget.title),
        actions: [
          IconButton(
            icon: const Icon(Icons.raw_on),
            onPressed: () => showLines(true),
          ),
          IconButton(
            icon: const Icon(Icons.raw_off),
            onPressed: () => showLines(false),
          ),
        ],
      ),
      body: loading
          ? const Center(child: CircularProgressIndicator(color: Colors.blue))
          : Column(
              crossAxisAlignment: CrossAxisAlignment.start,
              children: [
                Row(children: [
                  Expanded(
                    child: InkWell(
                      child: Container(
                        padding: const EdgeInsets.all(12),
                        alignment: Alignment.center,
                        color: Colors.blue.withOpacity(0.5),
                        child: Text("Raw Data",
                            style: TextStyle(
                                color: Colors.white,
                                fontWeight: FontWeight.bold,
                                fontSize: 16,
                                decoration: 0 == selected ? TextDecoration.underline : TextDecoration.none)),
                      ),
                      onTap: () => setState(() => selected = 0),
                    ),
                  ),
                  const VerticalDivider(color: Colors.white, width: 1, thickness: 1),
                  Expanded(
                    child: InkWell(
                      child: Container(
                        padding: const EdgeInsets.all(12),
                        alignment: Alignment.center,
                        color: Colors.blue.withOpacity(0.5),
                        child: Text(
                            type == 0
                                ? "Sorted"
                                : type == 1
                                    ? "X Axis"
                                    : type == 2
                                        ? "Y Axis"
                                        : "Slope",
                            style: TextStyle(
                                color: Colors.white,
                                fontWeight: FontWeight.bold,
                                fontSize: 16,
                                decoration: 1 == selected ? TextDecoration.underline : TextDecoration.none)),
                      ),
                      onTap: () => setState(() => selected = 1),
                    ),
                  ),
                  const VerticalDivider(color: Colors.white, width: 1, thickness: 1),
                  Expanded(
                    child: InkWell(
                      child: Container(
                        padding: const EdgeInsets.all(12),
                        alignment: Alignment.center,
                        color: Colors.blue.withOpacity(0.5),
                        child: Text("Extracted",
                            style: TextStyle(
                                color: Colors.white,
                                fontWeight: FontWeight.bold,
                                fontSize: 16,
                                decoration: 2 == selected ? TextDecoration.underline : TextDecoration.none)),
                      ),
                      onTap: () => setState(() => selected = 2),
                    ),
                  ),
                ]),
                Expanded(
                  child: Container(
                    padding: const EdgeInsets.all(20),
                    child: SingleChildScrollView(child: Text(showingText)),
                  ),
                ),
              ],
            ),
      floatingActionButton: Row(
        children: [
          const SizedBox(width: 24),
          FloatingActionButton(
            heroTag: "btn 1",
            onPressed: () {
              Clipboard.setData(ClipboardData(text: showingText));
              Get.snackbar('\nCopied to Clipboard', "",
                  duration: const Duration(seconds: 1),
                  colorText: Colors.black,
                  backgroundColor: Colors.white70);
            },
            child: const Icon(Icons.copy),
          ),
          // const SizedBox(width: 9),
          // if (selected == 1)
          //   ElevatedButton.icon(
          //       style: ElevatedButton.styleFrom(
          //           primary: Colors.amberAccent,
          //           shape: RoundedRectangleBorder(borderRadius: BorderRadius.circular(25)),
          //           fixedSize: const Size(100, 50),
          //           textStyle: const TextStyle(fontWeight: FontWeight.bold)),
          //       onPressed: () => setState(() => type = (type + 1) % 4),
          //       icon: const Icon(Icons.change_circle),
          //       label: const Text('Type')),
          const Spacer(),
          FloatingActionButton(
            heroTag: "btn 2",
            onPressed: () {
              Navigator.of(context).push(MaterialPageRoute(builder: (context) => const LiveScan()));
            },
            child: const Icon(Icons.video_camera_front),
          ),
          const SizedBox(width: 9),
          FloatingActionButton(
            heroTag: "btn 2.5",
            onPressed: _takePicture,
            child: const Icon(Icons.camera_alt),
          ),
          const SizedBox(width: 9),
          FloatingActionButton(
            heroTag: "btn 3",
            onPressed: _getPassengers,
            child: const Icon(Icons.attach_file),
          ),
        ],
      ), // This trailing comma makes auto-formatting nicer for build methods.
    );
  }
}

class _TakePicture extends StatefulWidget {
  final ArtemisCameraKitController controller;

  const _TakePicture({Key? key, required this.controller}) : super(key: key);

  @override
  State<_TakePicture> createState() => _TakePictureState();
}

class _TakePictureState extends State<_TakePicture> {
  @override
  Widget build(BuildContext context) {
    return Scaffold(
      appBar: AppBar(title: const Text("Scanner")),
      backgroundColor: Colors.white,
      floatingActionButtonLocation: FloatingActionButtonLocation.centerFloat,
      floatingActionButton: FloatingActionButton(
        onPressed: () => widget.controller.takePicture().then((value) => Navigator.pop(context, value)),
        child: const Icon(Icons.camera_alt),
      ),
      body: Container(
        width: MediaQuery.of(context).size.width,
        height: MediaQuery.of(context).size.height,
        color: Colors.white,
        child: ArtemisCameraKitView(controller: widget.controller, hasBarcodeReader: false),
      ),
    );
  }
}