wacom_stu_plugin

A Flutter Windows plugin for Wacom STU signature tablet communication.

Provides MethodChannel and EventChannel interfaces to connect, disconnect, control the display, and stream real-time pen input from Wacom STU USB devices.

Platform: Windows only. Requires Wacom STU SDK installed at C:/Program Files (x86)/Wacom STU SDK/cpp.

This plugin is used by

flutter_wacom_signature_pad — a higher-level package that provides ready-made PDF signing widgets built on top of this plugin.

Channels

MethodChannel — wacom_stu_channel

Method Returns Description
connect Map (status, maxX, maxY, screenWidth, screenHeight) Connects to the first available Wacom STU USB device
disconnect String Disconnects the device
clearScreen void Clears the tablet display
setSignatureScreen void Renders an RGB image onto the tablet display

EventChannel — wacom_stu_events

Streams pen input events as Map<String, int>:

Field Description
x Pen X coordinate (raw tablet units)
y Pen Y coordinate (raw tablet units)
pressure Pen pressure
sw Switch state (button pressed)

Usage

import 'package:wacom_stu_plugin/wacom_stu_plugin.dart';

const methodChannel = MethodChannel('wacom_stu_channel');
const eventChannel  = EventChannel('wacom_stu_events');

// Connect
final caps = await methodChannel.invokeMethod('connect');

// Stream pen events
eventChannel.receiveBroadcastStream().listen((event) {
  final x        = event['x'];
  final y        = event['y'];
  final pressure = event['pressure'];
});

// Disconnect
await methodChannel.invokeMethod('disconnect');

Requirements

  • Wacom STU SDK installed at C:/Program Files (x86)/Wacom STU SDK/cpp
  • Windows 10 or later
  • USB connection to a Wacom STU device

License

MIT — see LICENSE

Libraries

wacom_stu_plugin
wacom_stu_plugin_method_channel
wacom_stu_plugin_platform_interface