remoteselector.cpp Example File

btfiletransfer/remoteselector.cpp
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** Copyright (C) 2015 The Qt Company Ltd.
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#include "remoteselector.h"
#include "ui_remoteselector.h"

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

#include <QMovie>
#include <QMessageBox>
#include <QFileDialog>
#include <QCheckBox>

#include "progress.h"
#include "pindisplay.h"

QT_USE_NAMESPACE

RemoteSelector::RemoteSelector(QWidget *parent)
:   QDialog(parent), ui(new Ui::RemoteSelector),
    m_localDevice(new QBluetoothLocalDevice), m_pindisplay(0),
    m_pairingError(false)
{
    ui->setupUi(this);

    //Using default Bluetooth adapter
    QBluetoothAddress adapterAddress = m_localDevice->address();

    /*
     * In case of multiple Bluetooth adapters it is possible to
     * set which adapter will be used by providing MAC Address.
     * Example code:
     *
     * QBluetoothAddress adapterAddress("XX:XX:XX:XX:XX:XX");
     * m_discoveryAgent = new QBluetoothServiceDiscoveryAgent(adapterAddress);
     */

    m_discoveryAgent = new QBluetoothServiceDiscoveryAgent(adapterAddress);

    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()));

    ui->remoteDevices->setColumnWidth(3, 75);
    ui->remoteDevices->setColumnWidth(4, 100);

    connect(m_localDevice, SIGNAL(pairingDisplayPinCode(QBluetoothAddress,QString)),
            this, SLOT(displayPin(QBluetoothAddress,QString)));
    connect(m_localDevice, SIGNAL(pairingDisplayConfirmation(QBluetoothAddress,QString)),
            this, SLOT(displayConfirmation(QBluetoothAddress,QString)));
    connect(m_localDevice, SIGNAL(pairingFinished(QBluetoothAddress,QBluetoothLocalDevice::Pairing)),
            this, SLOT(pairingFinished(QBluetoothAddress,QBluetoothLocalDevice::Pairing)));
    connect(m_localDevice, SIGNAL(error(QBluetoothLocalDevice::Error)),
            this, SLOT(pairingError(QBluetoothLocalDevice::Error)));

    ui->busyWidget->setMovie(new QMovie(":/icons/busy.gif"));
    ui->busyWidget->movie()->start();

    ui->pairingBusy->setMovie(new QMovie(":/icons/pairing.gif"));
    ui->pairingBusy->hide();

    ui->remoteDevices->clearContents();
    ui->remoteDevices->setRowCount(0);
}

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

void RemoteSelector::startDiscovery(const QBluetoothUuid &uuid)
{
    ui->stopButton->setDisabled(false);
    if (m_discoveryAgent->isActive())
        m_discoveryAgent->stop();

    m_discoveryAgent->setUuidFilter(uuid);
    m_discoveryAgent->start();

    if (!m_discoveryAgent->isActive() ||
            m_discoveryAgent->error() != QBluetoothServiceDiscoveryAgent::NoError) {
        ui->status->setText(tr("Cannot find remote services."));
    } else {
        ui->status->setText(tr("Scanning..."));
        ui->busyWidget->show();
        ui->busyWidget->movie()->start();
    }
}

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

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

//    QListWidgetItem *item =
//        new QListWidgetItem(QString::fromLatin1("%1\t%2\t%3").arg(serviceInfo.device().address().toString(),
//                                                             serviceInfo.device().name(), serviceInfo.serviceName()));

    QMutableMapIterator<int, QBluetoothServiceInfo> i(m_discoveredServices);
    while (i.hasNext()){
        i.next();
        if (serviceInfo.device().address() == i.value().device().address()){
            i.setValue(serviceInfo);
            return;
        }
    }

    int row = ui->remoteDevices->rowCount();
    ui->remoteDevices->insertRow(row);
    QTableWidgetItem *item = new QTableWidgetItem(serviceInfo.device().address().toString());
    ui->remoteDevices->setItem(row, 0, item);
    item = new QTableWidgetItem(serviceInfo.device().name());
    ui->remoteDevices->setItem(row, 1, item);
    item = new QTableWidgetItem(serviceInfo.serviceName());

    ui->remoteDevices->setItem(row, 2, item);

    QBluetoothLocalDevice::Pairing p;

    p = m_localDevice->pairingStatus(serviceInfo.device().address());

    ui->remoteDevices->blockSignals(true);

    item = new QTableWidgetItem();
    if ((p&QBluetoothLocalDevice::Paired) || (p&QBluetoothLocalDevice::AuthorizedPaired))
        item->setCheckState(Qt::Checked);
    else
        item->setCheckState(Qt::Unchecked);
    ui->remoteDevices->setItem(row, 3, item);

    item = new QTableWidgetItem();
    if (p&QBluetoothLocalDevice::AuthorizedPaired)
        item->setCheckState(Qt::Checked);
    else
        item->setCheckState(Qt::Unchecked);

    ui->remoteDevices->setItem(row, 4, item);

    ui->remoteDevices->blockSignals(false);

    m_discoveredServices.insert(row, serviceInfo);
}

void RemoteSelector::discoveryFinished()
{
    ui->status->setText(tr("Select the device to send to."));
    ui->stopButton->setDisabled(true);
    ui->busyWidget->movie()->stop();
    ui->busyWidget->hide();
}

void RemoteSelector::startDiscovery()
{
    startDiscovery(QBluetoothUuid(QBluetoothUuid::ObexObjectPush));
}

void RemoteSelector::on_refreshPB_clicked()
{
    startDiscovery();
    ui->stopButton->setDisabled(false);
}

void RemoteSelector::on_fileSelectPB_clicked()
{
    ui->fileName->setText(QFileDialog::getOpenFileName());
    if (m_service.isValid())
        ui->sendButton->setDisabled(false);
}

void RemoteSelector::on_sendButton_clicked()
{
    QBluetoothTransferManager mgr;
    QBluetoothTransferRequest req(m_service.device().address());

    m_file = new QFile(ui->fileName->text());

    Progress *p = new Progress;
    p->setStatus("Sending to: " + m_service.device().name(), "Waiting for start");
    p->show();

    QBluetoothTransferReply *reply = mgr.put(req, m_file);
    //mgr is default parent
    //ensure that mgr doesn't take reply down when leaving scope
    reply->setParent(this);
    if (reply->error()){
        qDebug() << "Failed to send file";
        p->finished(reply);
        reply->deleteLater();
        return;
    }

    connect(reply, SIGNAL(transferProgress(qint64,qint64)), p, SLOT(uploadProgress(qint64,qint64)));
    connect(reply, SIGNAL(finished(QBluetoothTransferReply*)), p, SLOT(finished(QBluetoothTransferReply*)));
    connect(p, SIGNAL(rejected()), reply, SLOT(abort()));
}

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

QString RemoteSelector::addressToName(const QBluetoothAddress &address)
{
    QMapIterator<int, QBluetoothServiceInfo> i(m_discoveredServices);
    while (i.hasNext()){
        i.next();
        if (i.value().device().address() == address)
            return i.value().device().name();
    }
    return address.toString();
}

void RemoteSelector::displayPin(const QBluetoothAddress &address, QString pin)
{
    if (m_pindisplay)
        m_pindisplay->deleteLater();
    m_pindisplay = new pinDisplay(QString("Enter pairing pin on: %1").arg(addressToName(address)), pin, this);
    m_pindisplay->show();
}

void RemoteSelector::displayConfirmation(const QBluetoothAddress &address, QString pin)
{
    Q_UNUSED(address);

    if (m_pindisplay)
        m_pindisplay->deleteLater();
    m_pindisplay = new pinDisplay(QString("Confirm this pin is the same"), pin, this);
    connect(m_pindisplay, SIGNAL(accepted()), this, SLOT(displayConfAccepted()));
    connect(m_pindisplay, SIGNAL(rejected()), this, SLOT(displayConfReject()));
    m_pindisplay->setOkCancel();
    m_pindisplay->show();
}

void RemoteSelector::displayConfAccepted()
{
    m_localDevice->pairingConfirmation(true);
}
void RemoteSelector::displayConfReject()
{
    m_localDevice->pairingConfirmation(false);
}

void RemoteSelector::pairingFinished(const QBluetoothAddress &address, QBluetoothLocalDevice::Pairing status)
{
    QBluetoothServiceInfo service;
    int row = 0;

    ui->pairingBusy->hide();
    ui->pairingBusy->movie()->stop();

    ui->remoteDevices->blockSignals(true);

    for (int i = 0; i < m_discoveredServices.count(); i++){
        if (m_discoveredServices.value(i).device().address() == address){
            service = m_discoveredServices.value(i);
            row = i;
            break;
        }
    }

    if (m_pindisplay)
        delete m_pindisplay;

    QMessageBox msgBox;
    if (m_pairingError) {
        msgBox.setText("Pairing failed with " + address.toString());
    } else if (status == QBluetoothLocalDevice::Paired
               || status == QBluetoothLocalDevice::AuthorizedPaired) {
        msgBox.setText("Paired successfully with " + address.toString());
    } else {
        msgBox.setText("Pairing released with " + address.toString());
    }

    if (service.isValid()){
        if (status == QBluetoothLocalDevice::AuthorizedPaired){
            ui->remoteDevices->item(row, 3)->setCheckState(Qt::Checked);
            ui->remoteDevices->item(row, 4)->setCheckState(Qt::Checked);
        }
        else if (status == QBluetoothLocalDevice::Paired){
            ui->remoteDevices->item(row, 3)->setCheckState(Qt::Checked);
            ui->remoteDevices->item(row, 4)->setCheckState(Qt::Unchecked);
        }
        else {
            ui->remoteDevices->item(row, 3)->setCheckState(Qt::Unchecked);
            ui->remoteDevices->item(row, 4)->setCheckState(Qt::Unchecked);
        }
    }

    m_pairingError = false;
    msgBox.exec();

    ui->remoteDevices->blockSignals(false);
}

void RemoteSelector::pairingError(QBluetoothLocalDevice::Error error)
{
    if (error != QBluetoothLocalDevice::PairingError)
        return;

    m_pairingError = true;
    pairingFinished(m_service.device().address(), QBluetoothLocalDevice::Unpaired);
}

void RemoteSelector::on_remoteDevices_cellClicked(int row, int column)
{
    Q_UNUSED(column);

    m_service = m_discoveredServices.value(row);
    if (!ui->fileName->text().isEmpty()) {
        ui->sendButton->setDisabled(false);
    }
}

void RemoteSelector::on_remoteDevices_itemChanged(QTableWidgetItem* item)
{
    int row = item->row();
    int column = item->column();
    m_service = m_discoveredServices.value(row);

    if (column < 3)
        return;

    if (item->checkState() == Qt::Unchecked && column == 3){
        m_localDevice->requestPairing(m_service.device().address(), QBluetoothLocalDevice::Unpaired);
        return; // don't continue and start movie
    }
    else if ((item->checkState() == Qt::Checked && column == 3) ||
            (item->checkState() == Qt::Unchecked && column == 4)){
        m_localDevice->requestPairing(m_service.device().address(), QBluetoothLocalDevice::Paired);
        ui->remoteDevices->blockSignals(true);
        ui->remoteDevices->item(row, column)->setCheckState(Qt::PartiallyChecked);
        ui->remoteDevices->blockSignals(false);
    }
    else if (item->checkState() == Qt::Checked && column == 4){
        m_localDevice->requestPairing(m_service.device().address(), QBluetoothLocalDevice::AuthorizedPaired);
        ui->remoteDevices->blockSignals(true);
        ui->remoteDevices->item(row, column)->setCheckState(Qt::PartiallyChecked);
        ui->remoteDevices->blockSignals(false);
    }
    ui->pairingBusy->show();
    ui->pairingBusy->movie()->start();
}

© 2016 The Qt Company Ltd. Documentation contributions included herein are the copyrights of their respective owners. The documentation provided herein is licensed under the terms of the GNU Free Documentation License version 1.3 as published by the Free Software Foundation. Qt and respective logos are trademarks of The Qt Company Ltd. in Finland and/or other countries worldwide. All other trademarks are property of their respective owners.