src/gui/torrentcontentitemdelegate.cpp

   1 /*
   2  * Bittorrent Client using Qt and libtorrent.
   3  * Copyright (C) 2022  Vladimir Golovnev <glassez@yandex.ru>
   4  * Copyright (C) 2006  Christophe Dumez <chris@qbittorrent.org>
   5  *
   6  * This program is free software; you can redistribute it and/or
   7  * modify it under the terms of the GNU General Public License
   8  * as published by the Free Software Foundation; either version 2
   9  * of the License, or (at your option) any later version.
  10  *
  11  * This program is distributed in the hope that it will be useful,
  12  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  13  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  14  * GNU General Public License for more details.
  15  *
  16  * You should have received a copy of the GNU General Public License
  17  * along with this program; if not, write to the Free Software
  18  * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301, USA.
  19  *
  20  * In addition, as a special exception, the copyright holders give permission to
  21  * link this program with the OpenSSL project's "OpenSSL" library (or with
  22  * modified versions of it that use the same license as the "OpenSSL" library),
  23  * and distribute the linked executables. You must obey the GNU General Public
  24  * License in all respects for all of the code used other than "OpenSSL".  If you
  25  * modify file(s), you may extend this exception to your version of the file(s),
  26  * but you are not obligated to do so. If you do not wish to do so, delete this
  27  * exception statement from your version.
  28  */
  29
  30 #include "torrentcontentitemdelegate.h"
  31
  32 #include <QComboBox>
  33 #include <QModelIndex>
  34 #include <QPainter>
  35 #include <QProgressBar>
  36
  37 #include "base/bittorrent/downloadpriority.h"
  38 #include "base/bittorrent/torrent.h"
  39 #include "gui/torrentcontentmodel.h"
  40
  41 TorrentContentItemDelegate::TorrentContentItemDelegate(QWidget *parent)
  42     : QStyledItemDelegate(parent)
  43 {
  44 }
  45
  46 void TorrentContentItemDelegate::setEditorData(QWidget *editor, const QModelIndex &index) const
  47 {
  48     auto *combobox = static_cast<QComboBox *>(editor);
  49     // Set combobox index
  50     const int priority = index.data(TorrentContentModel::UnderlyingDataRole).toInt();
  51     switch (static_cast<BitTorrent::DownloadPriority>(priority))
  52     {
  53     case BitTorrent::DownloadPriority::Ignored:
  54         combobox->setCurrentIndex(0);
  55         break;
  56     case BitTorrent::DownloadPriority::High:
  57         combobox->setCurrentIndex(2);
  58         break;
  59     case BitTorrent::DownloadPriority::Maximum:
  60         combobox->setCurrentIndex(3);
  61         break;
  62     case BitTorrent::DownloadPriority::Mixed:
  63         combobox->setCurrentIndex(4);
  64         break;
  65     default:
  66         combobox->setCurrentIndex(1);
  67         break;
  68     }
  69 }
  70
  71 QWidget *TorrentContentItemDelegate::createEditor(QWidget *parent, const QStyleOptionViewItem &, const QModelIndex &index) const
  72 {
  73     if (index.column() != TorrentContentModelItem::COL_PRIO)
  74         return nullptr;
  75
  76     auto *editor = new QComboBox(parent);
  77     editor->setFocusPolicy(Qt::StrongFocus);
  78     editor->addItem(tr("Do not download", "Do not download (priority)"));
  79     editor->addItem(tr("Normal", "Normal (priority)"));
  80     editor->addItem(tr("High", "High (priority)"));
  81     editor->addItem(tr("Maximum", "Maximum (priority)"));
  82
  83     // add Mixed priority item to the new combobox only for those items with Mixed priority
  84     const auto priority = static_cast<BitTorrent::DownloadPriority>(index.data(TorrentContentModel::UnderlyingDataRole).toInt());
  85     if (priority == BitTorrent::DownloadPriority::Mixed)
  86     {
  87         editor->addItem(tr("Mixed", "Mixed (priorities)"));
  88     }
  89
  90     connect(editor, qOverload<int>(&QComboBox::currentIndexChanged), this, [this, editor]()
  91     {
  92         emit const_cast<TorrentContentItemDelegate *>(this)->commitData(editor);
  93     });
  94
  95     return editor;
  96 }
  97
  98 void TorrentContentItemDelegate::setModelData(QWidget *editor, QAbstractItemModel *model, const QModelIndex &index) const
  99 {
 100     const auto *combobox = static_cast<QComboBox *>(editor);
 101
 102     BitTorrent::DownloadPriority prio = BitTorrent::DownloadPriority::Normal; // NORMAL
 103     switch (combobox->currentIndex())
 104     {
 105     case 0:
 106         prio = BitTorrent::DownloadPriority::Ignored; // IGNORED
 107         break;
 108     case 2:
 109         prio = BitTorrent::DownloadPriority::High; // HIGH
 110         break;
 111     case 3:
 112         prio = BitTorrent::DownloadPriority::Maximum; // MAX
 113         break;
 114     case 4:
 115         prio = BitTorrent::DownloadPriority::Mixed; // MIXED
 116         break;
 117     }
 118
 119     const int newPriority = static_cast<int>(prio);
 120     const int previousPriority = index.data(TorrentContentModel::UnderlyingDataRole).toInt();
 121
 122     if (newPriority != previousPriority)
 123     {
 124         model->setData(index, newPriority);
 125     }
 126 }
 127
 128 void TorrentContentItemDelegate::updateEditorGeometry(QWidget *editor, const QStyleOptionViewItem &option, const QModelIndex &) const
 129 {
 130     editor->setGeometry(option.rect);
 131 }
 132
 133 void TorrentContentItemDelegate::paint(QPainter *painter, const QStyleOptionViewItem &option, const QModelIndex &index) const
 134 {
 135     switch (index.column())
 136     {
 137     case TorrentContentModelItem::COL_PROGRESS:
 138         {
 139             const int progress = static_cast<int>(index.data(TorrentContentModel::UnderlyingDataRole).toReal());
 140             const int priority = index.sibling(index.row(), TorrentContentModelItem::COL_PRIO).data(TorrentContentModel::UnderlyingDataRole).toInt();
 141             const bool isEnabled = static_cast<BitTorrent::DownloadPriority>(priority) != BitTorrent::DownloadPriority::Ignored;
 142
 143             QStyleOptionViewItem customOption {option};
 144             customOption.state.setFlag(QStyle::State_Enabled, isEnabled);
 145
 146             m_progressBarPainter.paint(painter, customOption, index.data().toString(), progress);
 147         }
 148         break;
 149     default:
 150         QStyledItemDelegate::paint(painter, option, index);
 151         break;
 152     }
 153 }