addtorrentdialog.cpp Example File

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  #include "addtorrentdialog.h"
  #include "metainfo.h"

  #include <QFile>
  #include <QFileDialog>
  #include <QLineEdit>
  #include <QMetaObject>

  static QString stringNumber(qint64 number)
  {
      if (number > (1024 * 1024 * 1024))
          return QString::asprintf("%.2fGB", number / (1024.0 * 1024.0 * 1024.0));
      else if (number > (1024 * 1024))
          return QString::asprintf("%.2fMB", number / (1024.0 * 1024.0));
      else if (number > (1024))
          return QString::asprintf("%.2fKB", number / (1024.0));
      else
          return QString::asprintf("%d bytes", int(number));
  }

  AddTorrentDialog::AddTorrentDialog(QWidget *parent)
    : QDialog(parent, Qt::Sheet)
  {
      ui.setupUi(this);

      connect(ui.browseTorrents, SIGNAL(clicked()),
              this, SLOT(selectTorrent()));
      connect(ui.browseDestination, SIGNAL(clicked()),
              this, SLOT(selectDestination()));
      connect(ui.torrentFile, SIGNAL(textChanged(QString)),
              this, SLOT(setTorrent(QString)));

      ui.destinationFolder->setText(destinationDirectory = QDir::current().path());
      ui.torrentFile->setFocus();
  }

  void AddTorrentDialog::selectTorrent()
  {
      QString fileName = QFileDialog::getOpenFileName(this, tr("Choose a torrent file"),
                                                      lastDirectory,
                                                      tr("Torrents (*.torrent);; All files (*.*)"));
      if (fileName.isEmpty())
          return;
      lastDirectory = QFileInfo(fileName).absolutePath();
      setTorrent(fileName);
  }

  void AddTorrentDialog::selectDestination()
  {
      QString dir = QFileDialog::getExistingDirectory(this, tr("Choose a destination directory"),
                                                      lastDestinationDirectory);
      if (dir.isEmpty())
          return;
      lastDestinationDirectory = destinationDirectory = dir;
      ui.destinationFolder->setText(destinationDirectory);
      enableOkButton();
  }

  void AddTorrentDialog::enableOkButton()
  {
      ui.okButton->setEnabled(!ui.destinationFolder->text().isEmpty()
                              && !ui.torrentFile->text().isEmpty());
  }

  void AddTorrentDialog::setTorrent(const QString &torrentFile)
  {
      if (torrentFile.isEmpty()) {
          enableOkButton();
          return;
      }

      ui.torrentFile->setText(torrentFile);
      if (!torrentFile.isEmpty())
          lastDirectory = QFileInfo(torrentFile).absolutePath();

      if (lastDestinationDirectory.isEmpty())
          lastDestinationDirectory = lastDirectory;

      MetaInfo metaInfo;
      QFile torrent(torrentFile);
      if (!torrent.open(QFile::ReadOnly) || !metaInfo.parse(torrent.readAll())) {
          enableOkButton();
          return;
      }

      ui.torrentFile->setText(torrentFile);
      ui.announceUrl->setText(metaInfo.announceUrl());
      if (metaInfo.comment().isEmpty())
          ui.commentLabel->setText("<unknown>");
      else
          ui.commentLabel->setText(metaInfo.comment());
      if (metaInfo.createdBy().isEmpty())
          ui.creatorLabel->setText("<unknown>");
      else
          ui.creatorLabel->setText(metaInfo.createdBy());
      ui.sizeLabel->setText(stringNumber(metaInfo.totalSize()));
      if (metaInfo.fileForm() == MetaInfo::SingleFileForm) {
          ui.torrentContents->setHtml(metaInfo.singleFile().name);
      } else {
          QString html;
          foreach (MetaInfoMultiFile file, metaInfo.multiFiles()) {
              QString name = metaInfo.name();
              if (!name.isEmpty()) {
                  html += name;
                  if (!name.endsWith('/'))
                      html += '/';
              }
              html += file.path + "<br>";
          }
          ui.torrentContents->setHtml(html);
      }

      QFileInfo info(torrentFile);
      ui.destinationFolder->setText(info.absolutePath());

      enableOkButton();
  }

  QString AddTorrentDialog::torrentFileName() const
  {
      return ui.torrentFile->text();
  }

  QString AddTorrentDialog::destinationFolder() const
  {
      return ui.destinationFolder->text();
  }