Qt 5.8 | Qt Bluetooth | Bluetooth Chat Example | chatclient.cpp Example File

Qt 5.8.0 Reference Documentation

# chatclient.cpp Example File

btchat/chatclient.cpp

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      ** Copyright (C) 2015 The Qt Company Ltd.
      ** Contact: http://www.qt.io/licensing/
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      ** This file is part of the QtBluetooth module of the Qt Toolkit.
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      #include "chatclient.h"

      #include <qbluetoothsocket.h>

      ChatClient::ChatClient(QObject *parent)
      :   QObject(parent), socket(0)
      {
      }

      ChatClient::~ChatClient()
      {
          stopClient();
      }

      void ChatClient::startClient(const QBluetoothServiceInfo &remoteService)
      {
          if (socket)
              return;

          // Connect to service
          socket = new QBluetoothSocket(QBluetoothServiceInfo::RfcommProtocol);
          qDebug() << "Create socket";
          socket->connectToService(remoteService);
          qDebug() << "ConnectToService done";

          connect(socket, SIGNAL(readyRead()), this, SLOT(readSocket()));
          connect(socket, SIGNAL(connected()), this, SLOT(connected()));
          connect(socket, SIGNAL(disconnected()), this, SIGNAL(disconnected()));
      }

      void ChatClient::stopClient()
      {
          delete socket;
          socket = 0;
      }

      void ChatClient::readSocket()
      {
          if (!socket)
              return;

          while (socket->canReadLine()) {
              QByteArray line = socket->readLine();
              emit messageReceived(socket->peerName(),
                                   QString::fromUtf8(line.constData(), line.length()));
          }
      }

      void ChatClient::sendMessage(const QString &message)
      {
          QByteArray text = message.toUtf8() + '\n';
          socket->write(text);
      }

      void ChatClient::connected()
      {
          emit connected(socket->peerName());
      }