- Qt 5.5
- Qt Bluetooth
- Bluetooth Chat Example
- remoteselector.cpp Example File
- Qt 5.5.1 Reference Documentation

# remoteselector.cpp Example File

btchat/remoteselector.cpp

    /****************************************************************************
    **
    ** Copyright (C) 2015 The Qt Company Ltd.
    ** Contact: http://www.qt.io/licensing/
    **
    ** This file is part of the QtBluetooth module of the Qt Toolkit.
    **
    ** $QT_BEGIN_LICENSE:BSD$
    ** You may use this file under the terms of the BSD license as follows:
    **
    ** "Redistribution and use in source and binary forms, with or without
    ** modification, are permitted provided that the following conditions are
    ** met:
    **   * Redistributions of source code must retain the above copyright
    **     notice, this list of conditions and the following disclaimer.
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    **     notice, this list of conditions and the following disclaimer in
    **     the documentation and/or other materials provided with the
    **     distribution.
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    **     contributors may be used to endorse or promote products derived
    **     from this software without specific prior written permission.
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    ** "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
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    #include "remoteselector.h"
    #include "ui_remoteselector.h"

    #include <qbluetoothdeviceinfo.h>
    #include <qbluetoothaddress.h>
    #include <qbluetoothlocaldevice.h>

    QT_USE_NAMESPACE

    RemoteSelector::RemoteSelector(const QBluetoothAddress &localAdapter, QWidget *parent)
    :   QDialog(parent), ui(new Ui::RemoteSelector)
    {
        ui->setupUi(this);

        m_discoveryAgent = new QBluetoothServiceDiscoveryAgent(localAdapter);

        connect(m_discoveryAgent, SIGNAL(serviceDiscovered(QBluetoothServiceInfo)),
                this, SLOT(serviceDiscovered(QBluetoothServiceInfo)));
        connect(m_discoveryAgent, SIGNAL(finished()), this, SLOT(discoveryFinished()));
        connect(m_discoveryAgent, SIGNAL(canceled()), this, SLOT(discoveryFinished()));
    }

    RemoteSelector::~RemoteSelector()
    {
        delete ui;
        delete m_discoveryAgent;
    }

    void RemoteSelector::startDiscovery(const QBluetoothUuid &uuid)
    {
        ui->status->setText(tr("Scanning..."));
        if (m_discoveryAgent->isActive())
            m_discoveryAgent->stop();

        ui->remoteDevices->clear();

        m_discoveryAgent->setUuidFilter(uuid);
        m_discoveryAgent->start(QBluetoothServiceDiscoveryAgent::FullDiscovery);

    }

    void RemoteSelector::stopDiscovery()
    {
        if (m_discoveryAgent){
            m_discoveryAgent->stop();
        }
    }

    QBluetoothServiceInfo RemoteSelector::service() const
    {
        return m_service;
    }

    void RemoteSelector::serviceDiscovered(const QBluetoothServiceInfo &serviceInfo)
    {
    #if 0
        qDebug() << "Discovered service on"
                 << serviceInfo.device().name() << serviceInfo.device().address().toString();
        qDebug() << "\tService name:" << serviceInfo.serviceName();
        qDebug() << "\tDescription:"
                 << serviceInfo.attribute(QBluetoothServiceInfo::ServiceDescription).toString();
        qDebug() << "\tProvider:"
                 << serviceInfo.attribute(QBluetoothServiceInfo::ServiceProvider).toString();
        qDebug() << "\tL2CAP protocol service multiplexer:"
                 << serviceInfo.protocolServiceMultiplexer();
        qDebug() << "\tRFCOMM server channel:" << serviceInfo.serverChannel();
    #endif
        QMapIterator<QListWidgetItem *, QBluetoothServiceInfo> i(m_discoveredServices);
        while (i.hasNext()){
            i.next();
            if (serviceInfo.device().address() == i.value().device().address()){
                return;
            }
        }

        QString remoteName;
        if (serviceInfo.device().name().isEmpty())
            remoteName = serviceInfo.device().address().toString();
        else
            remoteName = serviceInfo.device().name();

        QListWidgetItem *item =
            new QListWidgetItem(QString::fromLatin1("%1 %2").arg(remoteName,
                                                                 serviceInfo.serviceName()));

        m_discoveredServices.insert(item, serviceInfo);
        ui->remoteDevices->addItem(item);
    }

    void RemoteSelector::discoveryFinished()
    {
        ui->status->setText(tr("Select the chat service to connect to."));
    }

    void RemoteSelector::on_remoteDevices_itemActivated(QListWidgetItem *item)
    {
        qDebug() << "got click" << item->text();
        m_service = m_discoveredServices.value(item);
        if (m_discoveryAgent->isActive())
            m_discoveryAgent->stop();

        accept();
    }

    void RemoteSelector::on_cancelButton_clicked()
    {
        reject();
    }