node-global-key-listener
Version:
A module to listen to global key events
88 lines • 7.67 kB
JavaScript
;
var __importDefault = (this && this.__importDefault) || function (mod) {
return (mod && mod.__esModule) ? mod : { "default": mod };
};
Object.defineProperty(exports, "__esModule", { value: true });
exports.WinKeyServer = void 0;
const child_process_1 = require("child_process");
const WinGlobalKeyLookup_1 = require("./_data/WinGlobalKeyLookup");
const path_1 = __importDefault(require("path"));
const isSpawnEventSupported_1 = require("./isSpawnEventSupported");
const sPath = "../../bin/WinKeyServer.exe";
/** Use this class to listen to key events on Windows OS */
class WinKeyServer {
/**
* Creates a new key server for windows
* @param listener The callback to report key events to
* @param windowsConfig The optional windows configuration
*/
constructor(listener, config = {}) {
this.listener = listener;
this.config = config;
}
/** Start the Key server and listen for keypresses */
async start() {
var _a, _b;
const serverPath = this.config.serverPath || path_1.default.join(__dirname, sPath);
this.proc = child_process_1.execFile(serverPath, { maxBuffer: Infinity });
if (this.config.onInfo)
(_a = this.proc.stderr) === null || _a === void 0 ? void 0 : _a.on("data", data => { var _a, _b; return (_b = (_a = this.config).onInfo) === null || _b === void 0 ? void 0 : _b.call(_a, data.toString()); });
if (this.config.onError)
this.proc.on("close", this.config.onError);
(_b = this.proc.stdout) === null || _b === void 0 ? void 0 : _b.on("data", data => {
var _a;
const events = this._getEventData(data);
for (let { event, eventId } of events) {
const stopPropagation = !!this.listener(event);
(_a = this.proc.stdin) === null || _a === void 0 ? void 0 : _a.write(`${stopPropagation ? "1" : "0"},${eventId}\n`);
}
});
return new Promise((res, err) => {
this.proc.on("error", err);
if (isSpawnEventSupported_1.isSpawnEventSupported())
this.proc.on("spawn", res);
// A timed fallback if the spawn event is not supported
else
setTimeout(res, 200);
});
}
/** Stop the Key server */
stop() {
var _a;
(_a = this.proc.stdout) === null || _a === void 0 ? void 0 : _a.pause();
this.proc.kill();
}
/**
* Obtains a IGlobalKeyEvent from stdout buffer data
* @param data Data from stdout
* @returns The standardized key event data
*/
_getEventData(data) {
const sData = data.toString();
const lines = sData.trim().split(/\n/);
return lines.map(line => {
const lineData = line.replace(/\s+/, "");
const [_mouseKeyboard, downUp, sKeyCode, sScanCode, sLocationX, sLocationY, eventId,] = lineData.split(",");
const isDown = downUp === 'DOWN';
const keyCode = Number.parseInt(sKeyCode, 10);
const scanCode = Number.parseInt(sScanCode, 10);
const locationX = Number.parseFloat(sLocationX);
const locationY = Number.parseFloat(sLocationY);
const key = WinGlobalKeyLookup_1.WinGlobalKeyLookup[keyCode];
return {
event: {
vKey: keyCode,
rawKey: key,
name: key === null || key === void 0 ? void 0 : key.standardName,
state: isDown ? "DOWN" : "UP",
scanCode: scanCode,
location: [locationX, locationY],
_raw: sData,
},
eventId,
};
});
}
}
exports.WinKeyServer = WinKeyServer;
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