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notepad_core

Flutter plugin for connect & operate on smart notepad

Usage

  • Scan notepad
  • Connect notepad
  • Sync notepen pointer

Scan notepad

Web

let device = notepadConnector.requestDevice();
console.log(`requestDevice ${device}`);

Mini-program on Wechat

let scanResultReceiver = function (scanResult) {
  console.log(`onScanResult ${scanResult}`);
};
notepadConnector.onScanResult(scanResultReceiver);

notepadConnector.startScan();
// ...
notepadConnector.stopScan();

notepadConnector.offScanResult(scanResultReceiver);

Connect notepad

Connect to device requested from notepadConnector.requestDevice()

or scanResult received from notepadConnector.onScanResult

let connectionChangeHandler = function (notepadClient, connectionState) {
  console.log(`onConnectionChange ${notepadClient}, ${connectionState}`);
};
notepadConnector.onConnectionChange(connectionChangeHandler);

notepadConnector.connect(obj); // obj = device/scanResult
// ...
notepadConnector.disconnect();

notepadConnector.offConnectionChange(connectionChangeHandler);

Sync notepen pointer

NotepadClient#setMode

  • NotepadMode.Common

    Notepad saves only NotePenPointer with positive pressure & accurate timestamp, into offline memo

  • NotepadMode.Sync

    Notepad notify every NotePenPointer, positive or not, without timestamp, to connected mobile device

Notepad is always NotepadMode.Common (connected or disconnected), unless setMode after connected

await _notepadClient.setMode(NotepadMode.Sync);
console.log("setMode complete");

NotepadClient#onSyncPointerReceive

Receive NotePenPointers in NotepadMode.Sync

let syncPointerReceiver = function (pointers) {
  console.log(`onSyncPointerReceive ${pointers.length}`);
};

_notepadClient.onSyncPointerReceive(syncPointerReceiver);
// ...
_notepadClient.offSyncPointerReceive(syncPointerReceiver);