- Qt 5.5
- Qt Bluetooth
- Bluetooth File Transfer Example
- progress.cpp Example File
- Qt 5.5.1 Reference Documentation

# progress.cpp Example File

btfiletransfer/progress.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:
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    #include "progress.h"
    #include "ui_progress.h"

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

    QT_USE_NAMESPACE

    Progress::Progress(QWidget *parent) :
        QDialog(parent),
        ui(new Ui::Progress)
    {
        ui->setupUi(this);
        ui->progressBar->setRange(0, 1);
        connect(ui->cancelButton, SIGNAL(clicked()), this, SLOT(close()));
    }

    Progress::~Progress()
    {
        delete ui;
    }

    void Progress::setStatus(QString title, QString filename) {
        ui->titleLabel->setText(title);
        ui->statusLabel->setText(filename);
    }

    void Progress::finished(QBluetoothTransferReply *reply){
        if (reply->error() != QBluetoothTransferReply::NoError){
            ui->progressBar->setDisabled(true);
            ui->statusLabel->setText(tr("Failed: %1").arg(reply->errorString()));
        }
        else {
            ui->statusLabel->setText(tr("Transfer complete"));
        }
        ui->cancelButton->setText(tr("Dismiss"));
    }

    void Progress::uploadProgress(qint64 bytesSent, qint64 bytesTotal)
    {
        if (bytesSent == 0){
            start.start();
        }

        ui->progressBar->setMaximum(bytesTotal);
        ui->progressBar->setValue(bytesSent);
        if (bytesSent && bytesTotal &&
                (start.elapsed() > 1000) &&
                (bytesSent > start.elapsed()/1000)) {

            ui->statusLabel->setText(tr("Transferring...ETA: %1s")
                    .arg(((bytesTotal-bytesSent)/(bytesSent/(start.elapsed()/1000)))));
        }
    }