flutter_web_twain

The Flutter plugin is a wrapper for Dynamsoft's Web TWAIN SDK. It allows you to build web document scanning applications with Flutter.

Getting a License Key for Dynamic Web TWAIN

Installation

1. Add flutter_web_twain as a dependency in your pubspec.yaml file.

2. In the root of your project, download the Dynamic Web TWAIN npm package:

   npm install dwt
   

3. Include the following line in your index.html file:

   <script src="node_modules/dwt/dist/dynamsoft.webtwain.min.js"></script>
   

Usage

• Initialize the Flutter Web TWAIN SDK:

  final FlutterWebTwain _flutterWebTwain = FlutterWebTwain();
  WebTwainController _controller = await _flutterWebTwain.createWebTwainController();
  await _controller!.init('node_modules/dwt/dist/',
         'LICENSE-KEY');
  

• Embed the image container into your widget tree:

  Expanded(
      child: _controller == null
          ? const CircularProgressIndicator()
          : HtmlElementView(viewType: _controller!.webviewId),
  ),
  

• Acquire documents from a document scanner:

  await _controller!.scan(
      '{"IfShowUI": false, "PixelType": ${_pixelFormat!.index}}');
  

• Load images from the local file system:

  await _controller!.load();
  

• Save single or multiple images as PDF, TIFF or JPEG:

  await _controller!.download(FileFormat.PDF.index, 'filename');
  

Try the Example

cd example
flutter run -d chrome