web_hid 0.2.1+1

A starting point for Dart libraries or applications.

Dart wrapper via dart:js for https://wicg.github.io/webhid/

Features

• canUseHid
• getDevices/requestDevice
• subscribeConnect/unsubscribeConnect
• subscribeDisconnect/unsubscribeDisconnect
• open/close
• sendReport
• subscribeInputReport/unsubscribeInputReport
• sendFeatureReport

Usage

canUseHid

bool canUse = canUseHid();
print('canUse $canUse');

getDevices/requestDevice

• https://developer.mozilla.org/en-US/docs/Web/API/HID/getDevices

List<HidDevice> getDevices = await hid.getDevices();
_device = getDevices[0];

• https://developer.mozilla.org/en-US/docs/Web/API/HID/requestDevice

List<HidDevice> requestDevice = await hid.requestDevice(RequestOptions(
  filters: [keyboardBacklightIds],
));
_device = requestDevice[0];

subscribeConnect/unsubscribeConnect

https://developer.mozilla.org/en-US/docs/Web/API/HID/onconnect

final EventListener _handleConnect = allowInterop((Event event) {}
...
hid.subscribeConnect(_handleConnect);
...
hid.unsubscribeConnect(_handleConnect);

subscribeDisconnect/unsubscribeDisconnect

https://developer.mozilla.org/en-US/docs/Web/API/HID/ondisconnect

final EventListener _handleDisconnect = allowInterop((Event event) {}
...
hid.subscribeDisconnect(_handleDisconnect);
...
hid.unsubscribeDisconnect(_handleDisconnect);

open/close

• https://developer.mozilla.org/en-US/docs/Web/API/HIDDevice/open

_device?.open().then((value) {
  print('device.open success');
}).catchError((error) {
  print('device.open $error');
});

• https://developer.mozilla.org/en-US/docs/Web/API/HIDDevice/close

_device?.close().then((value) {
  print('device.close success');
}).catchError((error) {
  print('device.close $error');
});

sendReport

https://developer.mozilla.org/en-US/docs/Web/API/HIDDevice/sendReport

_device?.sendReport(0, blockBytes).then((value) {
  print('device.sendReport success');
}).catchError((error) {
  print('device.sendReport $error');
});

subscribeInputReport/unsubscribeInputReport

https://developer.mozilla.org/en-US/docs/Web/API/HIDDevice/oninputreport

final EventListener _handleInputReport = allowInterop((event) {}
...
_device?.subscribeInputReport(_handleInputReport);
...
_device?.unsubscribeInputReport(_handleInputReport);

sendFeatureReport

https://developer.mozilla.org/en-US/docs/Web/API/HIDDevice/sendFeatureReport

_device?.sendFeatureReport(1, Uint32List.fromList([1, 0])).then((value) {
  print('device.sendFeatureReport 0 success');
}).catchError((error) {
  print('device.sendFeatureReport $error');
});

Additional information

Status in Chromium: https://chromestatus.com/feature/5172464636133376