Change project directory structure.

Change project directory structure according to application structure. Change 'nox' configuration option to something more meaningful 'nogui'. Rename 'Icons' folder to 'icons' (similar to other folders). Partially add 'nowebui' option support. Remove QConf project file.
2025-07-15 17:53:08 -07:00 · 2015-01-18 15:13:06 +03:00 · 2015-01-18 15:13:06 +03:00 · ff9a281b72
commit ff9a281b72
parent e4c7f52bb3
797 changed files with 841 additions and 829 deletions
--- a/src/gui/properties/peerlistwidget.cpp
+++ b/src/gui/properties/peerlistwidget.cpp
@ -0,0 +1,616 @@
+/*
+ * Bittorrent Client using Qt4 and libtorrent.
+ * Copyright (C) 2006  Christophe Dumez
+ *
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU General Public License
+ * as published by the Free Software Foundation; either version 2
+ * of the License, or (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301, USA.
+ *
+ * In addition, as a special exception, the copyright holders give permission to
+ * link this program with the OpenSSL project's "OpenSSL" library (or with
+ * modified versions of it that use the same license as the "OpenSSL" library),
+ * and distribute the linked executables. You must obey the GNU General Public
+ * License in all respects for all of the code used other than "OpenSSL".  If you
+ * modify file(s), you may extend this exception to your version of the file(s),
+ * but you are not obligated to do so. If you do not wish to do so, delete this
+ * exception statement from your version.
+ *
+ * Contact : chris@qbittorrent.org
+ */
+
+#include "peerlistwidget.h"
+#include "peerlistdelegate.h"
+#include "peerlistsortmodel.h"
+#include "reverseresolution.h"
+#include "preferences.h"
+#include "propertieswidget.h"
+#include "geoipmanager.h"
+#include "peeraddition.h"
+#include "speedlimitdlg.h"
+#include "iconprovider.h"
+#include "qtorrenthandle.h"
+#include "logger.h"
+#include <QStandardItemModel>
+#include <QSortFilterProxyModel>
+#include <QSet>
+#include <QHeaderView>
+#include <QMenu>
+#include <QClipboard>
+#include <vector>
+#include <libtorrent/peer_info.hpp>
+
+using namespace libtorrent;
+
+PeerListWidget::PeerListWidget(PropertiesWidget *parent):
+  QTreeView(parent), m_properties(parent), m_displayFlags(false)
+{
+  // Load settings
+  loadSettings();
+  // Visual settings
+  setUniformRowHeights(true);
+  setRootIsDecorated(false);
+  setItemsExpandable(false);
+  setAllColumnsShowFocus(true);
+  setSelectionMode(QAbstractItemView::ExtendedSelection);
+  // List Model
+  m_listModel = new QStandardItemModel(0, PeerListDelegate::COL_COUNT);
+  m_listModel->setHeaderData(PeerListDelegate::COUNTRY, Qt::Horizontal, QVariant()); // Country flag column
+  m_listModel->setHeaderData(PeerListDelegate::IP, Qt::Horizontal, tr("IP"));
+  m_listModel->setHeaderData(PeerListDelegate::PORT, Qt::Horizontal, tr("Port"));
+  m_listModel->setHeaderData(PeerListDelegate::FLAGS, Qt::Horizontal, tr("Flags"));
+  m_listModel->setHeaderData(PeerListDelegate::CONNECTION, Qt::Horizontal, tr("Connection"));
+  m_listModel->setHeaderData(PeerListDelegate::CLIENT, Qt::Horizontal, tr("Client", "i.e.: Client application"));
+  m_listModel->setHeaderData(PeerListDelegate::PROGRESS, Qt::Horizontal, tr("Progress", "i.e: % downloaded"));
+  m_listModel->setHeaderData(PeerListDelegate::DOWN_SPEED, Qt::Horizontal, tr("Down Speed", "i.e: Download speed"));
+  m_listModel->setHeaderData(PeerListDelegate::UP_SPEED, Qt::Horizontal, tr("Up Speed", "i.e: Upload speed"));
+  m_listModel->setHeaderData(PeerListDelegate::TOT_DOWN, Qt::Horizontal, tr("Downloaded", "i.e: total data downloaded"));
+  m_listModel->setHeaderData(PeerListDelegate::TOT_UP, Qt::Horizontal, tr("Uploaded", "i.e: total data uploaded"));
+  m_listModel->setHeaderData(PeerListDelegate::RELEVANCE, Qt::Horizontal, tr("Relevance", "i.e: How relevant this peer is to us. How many pieces it has that we don't."));
+  // Proxy model to support sorting without actually altering the underlying model
+  m_proxyModel = new PeerListSortModel();
+  m_proxyModel->setDynamicSortFilter(true);
+  m_proxyModel->setSourceModel(m_listModel);
+  m_proxyModel->setSortCaseSensitivity(Qt::CaseInsensitive);
+  setModel(m_proxyModel);
+  //Explicitly set the column visibility. When columns are added/removed
+  //between versions this prevents some of them being hidden due to
+  //incorrect restoreState() being used.
+  for (unsigned int i=0; i<PeerListDelegate::IP_HIDDEN; i++)
+    showColumn(i);
+  hideColumn(PeerListDelegate::IP_HIDDEN);
+  hideColumn(PeerListDelegate::COL_COUNT);
+  if (!Preferences::instance()->resolvePeerCountries())
+    hideColumn(PeerListDelegate::COUNTRY);
+  //To also migitate the above issue, we have to resize each column when
+  //its size is 0, because explicitely 'showing' the column isn't enough
+  //in the above scenario.
+  for (unsigned int i=0; i<PeerListDelegate::IP_HIDDEN; i++)
+    if (!columnWidth(i))
+      resizeColumnToContents(i);
+  // Context menu
+  setContextMenuPolicy(Qt::CustomContextMenu);
+  connect(this, SIGNAL(customContextMenuRequested(QPoint)), this, SLOT(showPeerListMenu(QPoint)));
+  // List delegate
+  m_listDelegate = new PeerListDelegate(this);
+  setItemDelegate(m_listDelegate);
+  // Enable sorting
+  setSortingEnabled(true);
+  // IP to Hostname resolver
+  updatePeerHostNameResolutionState();
+  // SIGNAL/SLOT
+  connect(header(), SIGNAL(sectionClicked(int)), SLOT(handleSortColumnChanged(int)));
+  handleSortColumnChanged(header()->sortIndicatorSection());
+}
+
+PeerListWidget::~PeerListWidget()
+{
+  saveSettings();
+  delete m_proxyModel;
+  delete m_listModel;
+  delete m_listDelegate;
+  if (m_resolver)
+    delete m_resolver;
+}
+
+void PeerListWidget::updatePeerHostNameResolutionState()
+{
+  if (Preferences::instance()->resolvePeerHostNames()) {
+    if (!m_resolver) {
+      m_resolver = new ReverseResolution(this);
+      connect(m_resolver, SIGNAL(ip_resolved(QString,QString)), SLOT(handleResolved(QString,QString)));
+      loadPeers(m_properties->getCurrentTorrent(), true);
+    }
+  } else {
+    if (m_resolver)
+      delete m_resolver;
+  }
+}
+
+void PeerListWidget::updatePeerCountryResolutionState()
+{
+  if (Preferences::instance()->resolvePeerCountries() != m_displayFlags) {
+    m_displayFlags = !m_displayFlags;
+    if (m_displayFlags)
+      loadPeers(m_properties->getCurrentTorrent());
+  }
+}
+
+void PeerListWidget::showPeerListMenu(const QPoint&)
+{
+  QMenu menu;
+  bool empty_menu = true;
+  QTorrentHandle h = m_properties->getCurrentTorrent();
+  if (!h.is_valid()) return;
+  QModelIndexList selectedIndexes = selectionModel()->selectedRows();
+  QStringList selectedPeerIPs;
+  QStringList selectedPeerIPPort;
+  foreach (const QModelIndex &index, selectedIndexes) {
+    int row = m_proxyModel->mapToSource(index).row();
+    QString myip = m_listModel->data(m_listModel->index(row, PeerListDelegate::IP_HIDDEN)).toString();
+    QString myport = m_listModel->data(m_listModel->index(row, PeerListDelegate::PORT)).toString();
+    selectedPeerIPs << myip;
+    selectedPeerIPPort << myip + ":" + myport;
+  }
+  // Add Peer Action
+  QAction *addPeerAct = 0;
+  if (!h.is_queued() && !h.is_checking()) {
+    addPeerAct = menu.addAction(IconProvider::instance()->getIcon("user-group-new"), tr("Add a new peer..."));
+    empty_menu = false;
+  }
+  // Per Peer Speed limiting actions
+#if LIBTORRENT_VERSION_NUM < 10000
+  QAction *upLimitAct = 0;
+  QAction *dlLimitAct = 0;
+#endif
+  QAction *banAct = 0;
+  QAction *copyPeerAct = 0;
+  if (!selectedPeerIPs.isEmpty()) {
+    copyPeerAct = menu.addAction(IconProvider::instance()->getIcon("edit-copy"), tr("Copy selected"));
+    menu.addSeparator();
+#if LIBTORRENT_VERSION_NUM < 10000
+    dlLimitAct = menu.addAction(QIcon(":/icons/skin/download.png"), tr("Limit download rate..."));
+    upLimitAct = menu.addAction(QIcon(":/icons/skin/seeding.png"), tr("Limit upload rate..."));
+    menu.addSeparator();
+#endif
+    banAct = menu.addAction(IconProvider::instance()->getIcon("user-group-delete"), tr("Ban peer permanently"));
+    empty_menu = false;
+  }
+  if (empty_menu) return;
+  QAction *act = menu.exec(QCursor::pos());
+  if (act == 0) return;
+  if (act == addPeerAct) {
+    boost::asio::ip::tcp::endpoint ep = PeerAdditionDlg::askForPeerEndpoint();
+    if (ep != boost::asio::ip::tcp::endpoint()) {
+      try {
+        h.connect_peer(ep);
+        QMessageBox::information(0, tr("Peer addition"), tr("The peer was added to this torrent."));
+      } catch(std::exception) {
+        QMessageBox::critical(0, tr("Peer addition"), tr("The peer could not be added to this torrent."));
+      }
+    } else {
+      qDebug("No peer was added");
+    }
+    return;
+  }
+#if LIBTORRENT_VERSION_NUM < 10000
+  if (act == upLimitAct) {
+    limitUpRateSelectedPeers(selectedPeerIPs);
+    return;
+  }
+  if (act == dlLimitAct) {
+    limitDlRateSelectedPeers(selectedPeerIPs);
+    return;
+  }
+#endif
+  if (act == banAct) {
+    banSelectedPeers(selectedPeerIPs);
+    return;
+  }
+  if (act == copyPeerAct) {
+#if defined(Q_OS_WIN) || defined(Q_OS_OS2)
+    QApplication::clipboard()->setText(selectedPeerIPPort.join("\r\n"));
+#else
+    QApplication::clipboard()->setText(selectedPeerIPPort.join("\n"));
+#endif
+  }
+}
+
+void PeerListWidget::banSelectedPeers(const QStringList& peer_ips)
+{
+  // Confirm first
+  int ret = QMessageBox::question(this, tr("Are you sure? -- qBittorrent"), tr("Are you sure you want to ban permanently the selected peers?"),
+                                  tr("&Yes"), tr("&No"),
+                                  QString(), 0, 1);
+  if (ret)
+    return;
+
+  foreach (const QString &ip, peer_ips) {
+    qDebug("Banning peer %s...", ip.toLocal8Bit().data());
+    Logger::instance()->addMessage(tr("Manually banning peer %1...").arg(ip));
+    QBtSession::instance()->banIP(ip);
+  }
+  // Refresh list
+  loadPeers(m_properties->getCurrentTorrent());
+}
+
+#if LIBTORRENT_VERSION_NUM < 10000
+void PeerListWidget::limitUpRateSelectedPeers(const QStringList& peer_ips)
+{
+  if (peer_ips.empty())
+    return;
+  QTorrentHandle h = m_properties->getCurrentTorrent();
+  if (!h.is_valid())
+    return;
+
+  bool ok = false;
+  int cur_limit = -1;
+  boost::asio::ip::tcp::endpoint first_ep = m_peerEndpoints.value(peer_ips.first(),
+                                                                  boost::asio::ip::tcp::endpoint());
+  if (first_ep != boost::asio::ip::tcp::endpoint())
+    cur_limit = h.get_peer_upload_limit(first_ep);
+  long limit = SpeedLimitDialog::askSpeedLimit(&ok,
+                                               tr("Upload rate limiting"),
+                                               cur_limit,
+                                               Preferences::instance()->getGlobalUploadLimit()*1024.);
+  if (!ok)
+    return;
+
+  foreach (const QString &ip, peer_ips) {
+    boost::asio::ip::tcp::endpoint ep = m_peerEndpoints.value(ip, boost::asio::ip::tcp::endpoint());
+    if (ep != boost::asio::ip::tcp::endpoint()) {
+      qDebug("Settings Upload limit of %.1f Kb/s to peer %s", limit/1024., ip.toLocal8Bit().data());
+      try {
+        h.set_peer_upload_limit(ep, limit);
+      } catch(std::exception) {
+        std::cerr << "Impossible to apply upload limit to peer" << std::endl;
+      }
+    } else {
+      qDebug("The selected peer no longer exists...");
+    }
+  }
+}
+
+void PeerListWidget::limitDlRateSelectedPeers(const QStringList& peer_ips)
+{
+  QTorrentHandle h = m_properties->getCurrentTorrent();
+  if (!h.is_valid())
+    return;
+  bool ok = false;
+  int cur_limit = -1;
+  boost::asio::ip::tcp::endpoint first_ep = m_peerEndpoints.value(peer_ips.first(),
+                                                                  boost::asio::ip::tcp::endpoint());
+  if (first_ep != boost::asio::ip::tcp::endpoint())
+    cur_limit = h.get_peer_download_limit(first_ep);
+  long limit = SpeedLimitDialog::askSpeedLimit(&ok, tr("Download rate limiting"), cur_limit, Preferences::instance()->getGlobalDownloadLimit()*1024.);
+  if (!ok)
+    return;
+
+  foreach (const QString &ip, peer_ips) {
+    boost::asio::ip::tcp::endpoint ep = m_peerEndpoints.value(ip, boost::asio::ip::tcp::endpoint());
+    if (ep != boost::asio::ip::tcp::endpoint()) {
+      qDebug("Settings Download limit of %.1f Kb/s to peer %s", limit/1024., ip.toLocal8Bit().data());
+      try {
+        h.set_peer_download_limit(ep, limit);
+      }catch(std::exception) {
+        std::cerr << "Impossible to apply download limit to peer" << std::endl;
+      }
+    } else {
+      qDebug("The selected peer no longer exists...");
+    }
+  }
+}
+#endif
+
+void PeerListWidget::clear() {
+  qDebug("clearing peer list");
+  m_peerItems.clear();
+  m_peerEndpoints.clear();
+  m_missingFlags.clear();
+  int nbrows = m_listModel->rowCount();
+  if (nbrows > 0) {
+    qDebug("Cleared %d peers", nbrows);
+    m_listModel->removeRows(0,  nbrows);
+  }
+}
+
+void PeerListWidget::loadSettings() {
+  header()->restoreState(Preferences::instance()->getPeerListState());
+}
+
+void PeerListWidget::saveSettings() const {
+  Preferences::instance()->setPeerListState(header()->saveState());
+}
+
+void PeerListWidget::loadPeers(const QTorrentHandle &h, bool force_hostname_resolution) {
+  if (!h.is_valid())
+    return;
+  boost::system::error_code ec;
+  libtorrent::torrent_status status = h.status(torrent_handle::query_pieces);
+  std::vector<peer_info> peers;
+  h.get_peer_info(peers);
+  QSet<QString> old_peers_set = m_peerItems.keys().toSet();
+
+  std::vector<peer_info>::const_iterator itr = peers.begin();
+  std::vector<peer_info>::const_iterator itrend = peers.end();
+  for ( ; itr != itrend; ++itr) {
+    peer_info peer = *itr;
+    std::string ip_str = peer.ip.address().to_string(ec);
+    if (ec || ip_str.empty())
+      continue;
+    QString peer_ip = misc::toQString(ip_str);
+    if (m_peerItems.contains(peer_ip)) {
+      // Update existing peer
+      updatePeer(peer_ip, status, peer);
+      old_peers_set.remove(peer_ip);
+      if (force_hostname_resolution && m_resolver) {
+        m_resolver->resolve(peer_ip);
+      }
+    } else {
+      // Add new peer
+      m_peerItems[peer_ip] = addPeer(peer_ip, status, peer);
+      m_peerEndpoints[peer_ip] = peer.ip;
+      // Resolve peer host name is asked
+      if (m_resolver)
+        m_resolver->resolve(peer_ip);
+    }
+  }
+  // Delete peers that are gone
+  QSetIterator<QString> it(old_peers_set);
+  while(it.hasNext()) {
+    const QString& ip = it.next();
+    m_missingFlags.remove(ip);
+    m_peerEndpoints.remove(ip);
+    QStandardItem *item = m_peerItems.take(ip);
+    m_listModel->removeRow(item->row());
+  }
+}
+
+QStandardItem* PeerListWidget::addPeer(const QString& ip, const libtorrent::torrent_status &status, const peer_info& peer) {
+  int row = m_listModel->rowCount();
+  // Adding Peer to peer list
+  m_listModel->insertRow(row);
+  m_listModel->setData(m_listModel->index(row, PeerListDelegate::IP), ip);
+  m_listModel->setData(m_listModel->index(row, PeerListDelegate::IP), ip, Qt::ToolTipRole);
+  m_listModel->setData(m_listModel->index(row, PeerListDelegate::PORT), peer.ip.port());
+  m_listModel->setData(m_listModel->index(row, PeerListDelegate::IP_HIDDEN), ip);
+  if (m_displayFlags) {
+    const QIcon ico = GeoIPManager::CountryISOCodeToIcon(peer.country);
+    if (!ico.isNull()) {
+      m_listModel->setData(m_listModel->index(row, PeerListDelegate::COUNTRY), ico, Qt::DecorationRole);
+      const QString country_name = GeoIPManager::CountryISOCodeToName(peer.country);
+      m_listModel->setData(m_listModel->index(row, PeerListDelegate::COUNTRY), country_name, Qt::ToolTipRole);
+    } else {
+      m_missingFlags.insert(ip);
+    }
+  }
+  m_listModel->setData(m_listModel->index(row, PeerListDelegate::CONNECTION), getConnectionString(peer));
+  QString flags, tooltip;
+  getFlags(peer, flags, tooltip);
+  m_listModel->setData(m_listModel->index(row, PeerListDelegate::FLAGS), flags);
+  m_listModel->setData(m_listModel->index(row, PeerListDelegate::FLAGS), tooltip, Qt::ToolTipRole);
+  m_listModel->setData(m_listModel->index(row, PeerListDelegate::CLIENT), misc::toQStringU(peer.client));
+  m_listModel->setData(m_listModel->index(row, PeerListDelegate::PROGRESS), peer.progress);
+  m_listModel->setData(m_listModel->index(row, PeerListDelegate::DOWN_SPEED), peer.payload_down_speed);
+  m_listModel->setData(m_listModel->index(row, PeerListDelegate::UP_SPEED), peer.payload_up_speed);
+  m_listModel->setData(m_listModel->index(row, PeerListDelegate::TOT_DOWN), (qulonglong)peer.total_download);
+  m_listModel->setData(m_listModel->index(row, PeerListDelegate::TOT_UP), (qulonglong)peer.total_upload);
+  m_listModel->setData(m_listModel->index(row, PeerListDelegate::RELEVANCE), getPeerRelevance(status, peer));
+  return m_listModel->item(row, PeerListDelegate::IP);
+}
+
+void PeerListWidget::updatePeer(const QString& ip, const libtorrent::torrent_status &status, const peer_info& peer) {
+  QStandardItem *item = m_peerItems.value(ip);
+  int row = item->row();
+  if (m_displayFlags) {
+    const QIcon ico = GeoIPManager::CountryISOCodeToIcon(peer.country);
+    if (!ico.isNull()) {
+      m_listModel->setData(m_listModel->index(row, PeerListDelegate::COUNTRY), ico, Qt::DecorationRole);
+      const QString country_name = GeoIPManager::CountryISOCodeToName(peer.country);
+      m_listModel->setData(m_listModel->index(row, PeerListDelegate::COUNTRY), country_name, Qt::ToolTipRole);
+      m_missingFlags.remove(ip);
+    }
+  }
+  m_listModel->setData(m_listModel->index(row, PeerListDelegate::CONNECTION), getConnectionString(peer));
+  QString flags, tooltip;
+  getFlags(peer, flags, tooltip);
+  m_listModel->setData(m_listModel->index(row, PeerListDelegate::PORT), peer.ip.port());
+  m_listModel->setData(m_listModel->index(row, PeerListDelegate::FLAGS), flags);
+  m_listModel->setData(m_listModel->index(row, PeerListDelegate::FLAGS), tooltip, Qt::ToolTipRole);
+  m_listModel->setData(m_listModel->index(row, PeerListDelegate::CLIENT), misc::toQStringU(peer.client));
+  m_listModel->setData(m_listModel->index(row, PeerListDelegate::PROGRESS), peer.progress);
+  m_listModel->setData(m_listModel->index(row, PeerListDelegate::DOWN_SPEED), peer.payload_down_speed);
+  m_listModel->setData(m_listModel->index(row, PeerListDelegate::UP_SPEED), peer.payload_up_speed);
+  m_listModel->setData(m_listModel->index(row, PeerListDelegate::TOT_DOWN), (qulonglong)peer.total_download);
+  m_listModel->setData(m_listModel->index(row, PeerListDelegate::TOT_UP), (qulonglong)peer.total_upload);
+  m_listModel->setData(m_listModel->index(row, PeerListDelegate::RELEVANCE), getPeerRelevance(status, peer));
+}
+
+void PeerListWidget::handleResolved(const QString &ip, const QString &hostname) {
+  QStandardItem *item = m_peerItems.value(ip, 0);
+  if (item) {
+    qDebug("Resolved %s -> %s", qPrintable(ip), qPrintable(hostname));
+    item->setData(hostname, Qt::DisplayRole);
+  }
+}
+
+void PeerListWidget::handleSortColumnChanged(int col)
+{
+  if (col == PeerListDelegate::COUNTRY) {
+    qDebug("Sorting by decoration");
+    m_proxyModel->setSortRole(Qt::ToolTipRole);
+  } else {
+    m_proxyModel->setSortRole(Qt::DisplayRole);
+  }
+}
+
+QString PeerListWidget::getConnectionString(const peer_info& peer)
+{
+#if LIBTORRENT_VERSION_NUM < 10000
+  if (peer.connection_type & peer_info::bittorrent_utp) {
+#else
+  if (peer.flags & peer_info::utp_socket) {
+#endif
+    return QString::fromUtf8("μTP");
+  }
+
+  QString connection;
+  switch(peer.connection_type) {
+  case peer_info::http_seed:
+  case peer_info::web_seed:
+    connection = "Web";
+    break;
+  default:
+    connection = "BT";
+    break;
+  }
+  return connection;
+}
+
+void PeerListWidget::getFlags(const peer_info& peer, QString& flags, QString& tooltip)
+{  
+  if (peer.flags & peer_info::interesting) {
+    //d = Your client wants to download, but peer doesn't want to send (interested and choked)
+    if (peer.flags & peer_info::remote_choked) {
+      flags += "d ";
+      tooltip += tr("interested(local) and choked(peer)");
+      tooltip += ", ";
+    }
+    else {
+      //D = Currently downloading (interested and not choked)
+      flags += "D ";
+      tooltip += tr("interested(local) and unchoked(peer)");
+      tooltip += ", ";
+    }
+  }
+
+  if (peer.flags & peer_info::remote_interested) {
+    //u = Peer wants your client to upload, but your client doesn't want to (interested and choked)
+    if (peer.flags & peer_info::choked) {
+      flags += "u ";
+      tooltip += tr("interested(peer) and choked(local)");
+      tooltip += ", ";
+    }
+    else {
+      //U = Currently uploading (interested and not choked)
+      flags += "U ";
+      tooltip += tr("interested(peer) and unchoked(local)");
+      tooltip += ", ";
+    }
+  }
+
+  //O = Optimistic unchoke
+  if (peer.flags & peer_info::optimistic_unchoke) {
+    flags += "O ";
+    tooltip += tr("optimistic unchoke");
+    tooltip += ", ";
+  }
+
+  //S = Peer is snubbed
+  if (peer.flags & peer_info::snubbed) {
+    flags += "S ";
+    tooltip += tr("peer snubbed");
+    tooltip += ", ";
+  }
+
+  //I = Peer is an incoming connection
+  if ((peer.flags & peer_info::local_connection) == 0 ) {
+    flags += "I ";
+    tooltip += tr("incoming connection");
+    tooltip += ", ";
+  }
+
+  //K = Peer is unchoking your client, but your client is not interested
+  if (((peer.flags & peer_info::remote_choked) == 0) && ((peer.flags & peer_info::interesting) == 0)) {
+    flags += "K ";
+    tooltip += tr("not interested(local) and unchoked(peer)");
+    tooltip += ", ";
+  }
+
+  //? = Your client unchoked the peer but the peer is not interested
+  if (((peer.flags & peer_info::choked) == 0) && ((peer.flags & peer_info::remote_interested) == 0)) {
+    flags += "? ";
+    tooltip += tr("not interested(peer) and unchoked(local)");
+    tooltip += ", ";
+  }
+
+  //X = Peer was included in peerlists obtained through Peer Exchange (PEX)
+  if (peer.source & peer_info::pex) {
+    flags += "X ";
+    tooltip += tr("peer from PEX");
+    tooltip += ", ";
+  }
+
+  //H = Peer was obtained through DHT
+  if (peer.source & peer_info::dht) {
+    flags += "H ";
+    tooltip += tr("peer from DHT");
+    tooltip += ", ";
+  }
+
+  //E = Peer is using Protocol Encryption (all traffic)
+  if (peer.flags & peer_info::rc4_encrypted) {
+    flags += "E ";
+    tooltip += tr("encrypted traffic");
+    tooltip += ", ";
+  }
+
+  //e = Peer is using Protocol Encryption (handshake)
+  if (peer.flags & peer_info::plaintext_encrypted) {
+    flags += "e ";
+    tooltip += tr("encrypted handshake");
+    tooltip += ", ";
+  }
+
+  //P = Peer is using uTorrent uTP
+#if LIBTORRENT_VERSION_NUM < 10000
+  if (peer.connection_type & peer_info::bittorrent_utp) {
+#else
+  if (peer.flags & peer_info::utp_socket) {
+#endif
+    flags += "P ";
+    tooltip += QString::fromUtf8("μTP");
+    tooltip += ", ";
+  }
+
+  //L = Peer is local
+  if (peer.source & peer_info::lsd) {
+    flags += "L";
+    tooltip += tr("peer from LSD");
+  }
+
+  flags = flags.trimmed();
+  tooltip = tooltip.trimmed();
+  if (tooltip.endsWith(',', Qt::CaseInsensitive))
+    tooltip.chop(1);
+}
+
+double PeerListWidget::getPeerRelevance(const torrent_status& status, const libtorrent::peer_info &peer)
+{
+    int localMissing = 0;
+    int remoteHaves = 0;
+    libtorrent::bitfield local = status.pieces;
+    libtorrent::bitfield remote = peer.pieces;
+
+    for (int i=0; i<local.size(); ++i) {
+        if (!local[i]) {
+            ++localMissing;
+            if (remote[i])
+                ++remoteHaves;
+        }
+    }
+
+    if (localMissing == 0)
+        return 0.0;
+
+    return (double)remoteHaves/localMissing;
+}