Qt 4.3: addtorrentdialog.cpp Example File (network/torrent/addtorrentdialog.cpp)

|  | Home · All Classes · Main Classes · Grouped Classes · Modules · Functions |

# addtorrentdialog.cpp Example File
network/torrent/addtorrentdialog.cpp

     /****************************************************************************
     **
     ** Copyright (C) 2004-2008 Trolltech ASA. All rights reserved.
     **
     ** This file is part of the documentation of the Qt Toolkit.
     **
     ** This file may be used under the terms of the GNU General Public
    ** License versions 2.0 or 3.0 as published by the Free Software
    ** Foundation and appearing in the files LICENSE.GPL2 and LICENSE.GPL3
    ** included in the packaging of this file.  Alternatively you may (at
    ** your option) use any later version of the GNU General Public
    ** License if such license has been publicly approved by Trolltech ASA
    ** (or its successors, if any) and the KDE Free Qt Foundation. In
    ** addition, as a special exception, Trolltech gives you certain
    ** additional rights. These rights are described in the Trolltech GPL
    ** Exception version 1.2, which can be found at
    ** http://www.trolltech.com/products/qt/gplexception/ and in the file
    ** GPL_EXCEPTION.txt in this package.
    **
    ** Please review the following information to ensure GNU General
    ** Public Licensing requirements will be met:
    ** http://trolltech.com/products/qt/licenses/licensing/opensource/. If
    ** you are unsure which license is appropriate for your use, please
    ** review the following information:
    ** http://trolltech.com/products/qt/licenses/licensing/licensingoverview
    ** or contact the sales department at sales@trolltech.com.
    **
    ** In addition, as a special exception, Trolltech, as the sole
    ** copyright holder for Qt Designer, grants users of the Qt/Eclipse
    ** Integration plug-in the right for the Qt/Eclipse Integration to
    ** link to functionality provided by Qt Designer and its related
    ** libraries.
    **
    ** This file is provided "AS IS" with NO WARRANTY OF ANY KIND,
    ** INCLUDING THE WARRANTIES OF DESIGN, MERCHANTABILITY AND FITNESS FOR
    ** A PARTICULAR PURPOSE. Trolltech reserves all rights not expressly
    ** granted herein.
     **
     ** This file is provided AS IS with NO WARRANTY OF ANY KIND, INCLUDING THE
     ** WARRANTY OF DESIGN, MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE.
     **
     ****************************************************************************/

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

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

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

     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(const QString &)),
                 this, SLOT(setTorrent(const 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();
     }