qt-everywhere-src-5.14.1/qtconnectivity/examples/bluetooth/btfiletransfer/progress.cpp

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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)))));
    }
}