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| ** This file is part of the examples of the Qt Toolkit. |
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| |
| #include "downloadwidget.h" |
| |
| #include <QFileInfo> |
| #include <QUrl> |
| #include <QWebEngineDownloadItem> |
| |
| DownloadWidget::DownloadWidget(QWebEngineDownloadItem *download, QWidget *parent) |
| : QFrame(parent) |
| , m_download(download) |
| , m_timeAdded() |
| { |
| m_timeAdded.start(); |
| setupUi(this); |
| #if QT_VERSION >= QT_VERSION_CHECK(5, 14, 0) |
| m_dstName->setText(m_download->downloadFileName()); |
| #else |
| m_dstName->setText(QFileInfo(m_download->path()).fileName()); |
| #endif |
| m_srcUrl->setText(m_download->url().toDisplayString()); |
| |
| connect(m_cancelButton, &QPushButton::clicked, |
| [this](bool) { |
| if (m_download->state() == QWebEngineDownloadItem::DownloadInProgress) |
| m_download->cancel(); |
| else |
| emit removeClicked(this); |
| }); |
| |
| connect(m_download, &QWebEngineDownloadItem::downloadProgress, |
| this, &DownloadWidget::updateWidget); |
| |
| connect(m_download, &QWebEngineDownloadItem::stateChanged, |
| this, &DownloadWidget::updateWidget); |
| |
| updateWidget(); |
| } |
| |
| inline QString DownloadWidget::withUnit(qreal bytes) |
| { |
| if (bytes < (1 << 10)) |
| return tr("%L1 B").arg(bytes); |
| else if (bytes < (1 << 20)) |
| return tr("%L1 KiB").arg(bytes / (1 << 10), 0, 'f', 2); |
| else if (bytes < (1 << 30)) |
| return tr("%L1 MiB").arg(bytes / (1 << 20), 0, 'f', 2); |
| else |
| return tr("%L1 GiB").arg(bytes / (1 << 30), 0, 'f', 2); |
| } |
| |
| void DownloadWidget::updateWidget() |
| { |
| qreal totalBytes = m_download->totalBytes(); |
| qreal receivedBytes = m_download->receivedBytes(); |
| qreal bytesPerSecond = receivedBytes / m_timeAdded.elapsed() * 1000; |
| |
| auto state = m_download->state(); |
| switch (state) { |
| case QWebEngineDownloadItem::DownloadRequested: |
| Q_UNREACHABLE(); |
| break; |
| case QWebEngineDownloadItem::DownloadInProgress: |
| if (totalBytes >= 0) { |
| m_progressBar->setValue(qRound(100 * receivedBytes / totalBytes)); |
| m_progressBar->setDisabled(false); |
| m_progressBar->setFormat( |
| tr("%p% - %1 of %2 downloaded - %3/s") |
| .arg(withUnit(receivedBytes)) |
| .arg(withUnit(totalBytes)) |
| .arg(withUnit(bytesPerSecond))); |
| } else { |
| m_progressBar->setValue(0); |
| m_progressBar->setDisabled(false); |
| m_progressBar->setFormat( |
| tr("unknown size - %1 downloaded - %2/s") |
| .arg(withUnit(receivedBytes)) |
| .arg(withUnit(bytesPerSecond))); |
| } |
| break; |
| case QWebEngineDownloadItem::DownloadCompleted: |
| m_progressBar->setValue(100); |
| m_progressBar->setDisabled(true); |
| m_progressBar->setFormat( |
| tr("completed - %1 downloaded - %2/s") |
| .arg(withUnit(receivedBytes)) |
| .arg(withUnit(bytesPerSecond))); |
| break; |
| case QWebEngineDownloadItem::DownloadCancelled: |
| m_progressBar->setValue(0); |
| m_progressBar->setDisabled(true); |
| m_progressBar->setFormat( |
| tr("cancelled - %1 downloaded - %2/s") |
| .arg(withUnit(receivedBytes)) |
| .arg(withUnit(bytesPerSecond))); |
| break; |
| case QWebEngineDownloadItem::DownloadInterrupted: |
| m_progressBar->setValue(0); |
| m_progressBar->setDisabled(true); |
| m_progressBar->setFormat( |
| tr("interrupted: %1") |
| .arg(m_download->interruptReasonString())); |
| break; |
| } |
| |
| if (state == QWebEngineDownloadItem::DownloadInProgress) { |
| static QIcon cancelIcon(QStringLiteral(":process-stop.png")); |
| m_cancelButton->setIcon(cancelIcon); |
| m_cancelButton->setToolTip(tr("Stop downloading")); |
| } else { |
| static QIcon removeIcon(QStringLiteral(":edit-clear.png")); |
| m_cancelButton->setIcon(removeIcon); |
| m_cancelButton->setToolTip(tr("Remove from list")); |
| } |
| } |