src/gui/previewselectdialog.cpp

   1 /*
   2  * Bittorrent Client using Qt and libtorrent.
   3  * Copyright (C) 2011  Christophe Dumez <chris@qbittorrent.org>
   4  *
   5  * This program is free software; you can redistribute it and/or
   6  * modify it under the terms of the GNU General Public License
   7  * as published by the Free Software Foundation; either version 2
   8  * of the License, or (at your option) any later version.
   9  *
  10  * This program is distributed in the hope that it will be useful,
  11  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  12  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  13  * GNU General Public License for more details.
  14  *
  15  * You should have received a copy of the GNU General Public License
  16  * along with this program; if not, write to the Free Software
  17  * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301, USA.
  18  *
  19  * In addition, as a special exception, the copyright holders give permission to
  20  * link this program with the OpenSSL project's "OpenSSL" library (or with
  21  * modified versions of it that use the same license as the "OpenSSL" library),
  22  * and distribute the linked executables. You must obey the GNU General Public
  23  * License in all respects for all of the code used other than "OpenSSL".  If you
  24  * modify file(s), you may extend this exception to your version of the file(s),
  25  * but you are not obligated to do so. If you do not wish to do so, delete this
  26  * exception statement from your version.
  27  */
  28
  29 #include "previewselectdialog.h"
  30
  31 #include <QAction>
  32 #include <QDir>
  33 #include <QFile>
  34 #include <QHeaderView>
  35 #include <QMenu>
  36 #include <QMessageBox>
  37 #include <QPushButton>
  38 #include <QShowEvent>
  39 #include <QStandardItemModel>
  40
  41 #include "base/bittorrent/torrent.h"
  42 #include "base/preferences.h"
  43 #include "base/utils/fs.h"
  44 #include "base/utils/misc.h"
  45 #include "previewlistdelegate.h"
  46 #include "ui_previewselectdialog.h"
  47 #include "utils.h"
  48
  49 #define SETTINGS_KEY(name) u"PreviewSelectDialog/" name
  50
  51 PreviewSelectDialog::PreviewSelectDialog(QWidget *parent, const BitTorrent::Torrent *torrent)
  52     : QDialog(parent)
  53     , m_ui(new Ui::PreviewSelectDialog)
  54     , m_torrent(torrent)
  55     , m_storeDialogSize(SETTINGS_KEY(u"Size"_qs))
  56 #if (QT_VERSION >= QT_VERSION_CHECK(6, 0, 0))
  57     , m_storeTreeHeaderState(u"GUI/Qt6/" SETTINGS_KEY(u"HeaderState"_qs))
  58 #else
  59     , m_storeTreeHeaderState(SETTINGS_KEY(u"HeaderState"_qs))
  60 #endif
  61 {
  62     m_ui->setupUi(this);
  63
  64     m_ui->label->setText(tr("The following files from torrent \"%1\" support previewing, please select one of them:")
  65         .arg(m_torrent->name()));
  66
  67     m_ui->buttonBox->button(QDialogButtonBox::Ok)->setText(tr("Preview"));
  68     connect(m_ui->buttonBox, &QDialogButtonBox::accepted, this, &PreviewSelectDialog::previewButtonClicked);
  69     connect(m_ui->buttonBox, &QDialogButtonBox::rejected, this, &QDialog::reject);
  70     connect(m_ui->previewList, &QAbstractItemView::doubleClicked, this, &PreviewSelectDialog::previewButtonClicked);
  71
  72     const Preferences *pref = Preferences::instance();
  73     // Preview list
  74     m_previewListModel = new QStandardItemModel(0, NB_COLUMNS, this);
  75     m_previewListModel->setHeaderData(NAME, Qt::Horizontal, tr("Name"));
  76     m_previewListModel->setHeaderData(SIZE, Qt::Horizontal, tr("Size"));
  77     m_previewListModel->setHeaderData(PROGRESS, Qt::Horizontal, tr("Progress"));
  78
  79     m_ui->previewList->setAlternatingRowColors(pref->useAlternatingRowColors());
  80     m_ui->previewList->setModel(m_previewListModel);
  81     m_ui->previewList->hideColumn(FILE_INDEX);
  82     m_listDelegate = new PreviewListDelegate(this);
  83     m_ui->previewList->setItemDelegate(m_listDelegate);
  84     // Fill list in
  85     const QVector<qreal> fp = torrent->filesProgress();
  86     for (int i = 0; i < torrent->filesCount(); ++i)
  87     {
  88         const Path filePath = torrent->filePath(i);
  89         if (Utils::Misc::isPreviewable(filePath))
  90         {
  91             int row = m_previewListModel->rowCount();
  92             m_previewListModel->insertRow(row);
  93             m_previewListModel->setData(m_previewListModel->index(row, NAME), filePath.filename());
  94             m_previewListModel->setData(m_previewListModel->index(row, SIZE), torrent->fileSize(i));
  95             m_previewListModel->setData(m_previewListModel->index(row, PROGRESS), fp[i]);
  96             m_previewListModel->setData(m_previewListModel->index(row, FILE_INDEX), i);
  97         }
  98     }
  99
 100     m_previewListModel->sort(NAME);
 101     m_ui->previewList->header()->setContextMenuPolicy(Qt::CustomContextMenu);
 102     m_ui->previewList->header()->setFirstSectionMovable(true);
 103     m_ui->previewList->header()->setSortIndicator(0, Qt::AscendingOrder);
 104     m_ui->previewList->selectionModel()->select(m_previewListModel->index(0, NAME), QItemSelectionModel::Select | QItemSelectionModel::Rows);
 105
 106     connect(m_ui->previewList->header(), &QWidget::customContextMenuRequested, this, &PreviewSelectDialog::displayColumnHeaderMenu);
 107
 108     // Restore dialog state
 109     loadWindowState();
 110 }
 111
 112 PreviewSelectDialog::~PreviewSelectDialog()
 113 {
 114     saveWindowState();
 115
 116     delete m_ui;
 117 }
 118
 119 void PreviewSelectDialog::previewButtonClicked()
 120 {
 121     const QModelIndexList selectedIndexes = m_ui->previewList->selectionModel()->selectedRows(FILE_INDEX);
 122     if (selectedIndexes.isEmpty()) return;
 123
 124     // Flush data
 125     m_torrent->flushCache();
 126
 127     // Only one file should be selected
 128     const int fileIndex = selectedIndexes.at(0).data().toInt();
 129     const Path path = m_torrent->actualStorageLocation() / m_torrent->actualFilePath(fileIndex);
 130     // File
 131     if (!path.exists())
 132     {
 133         const bool isSingleFile = (m_previewListModel->rowCount() == 1);
 134         QWidget *parent = isSingleFile ? this->parentWidget() : this;
 135         QMessageBox::critical(parent, tr("Preview impossible")
 136             , tr("Sorry, we can't preview this file: \"%1\".").arg(path.toString()));
 137         if (isSingleFile)
 138             reject();
 139         return;
 140     }
 141
 142     emit readyToPreviewFile(path);
 143     accept();
 144 }
 145
 146 void PreviewSelectDialog::displayColumnHeaderMenu()
 147 {
 148     auto menu = new QMenu(this);
 149     menu->setAttribute(Qt::WA_DeleteOnClose);
 150     menu->setToolTipsVisible(true);
 151
 152     QAction *resizeAction = menu->addAction(tr("Resize columns"), this, [this]()
 153     {
 154         for (int i = 0, count = m_ui->previewList->header()->count(); i < count; ++i)
 155         {
 156             if (!m_ui->previewList->isColumnHidden(i))
 157                 m_ui->previewList->resizeColumnToContents(i);
 158         }
 159     });
 160     resizeAction->setToolTip(tr("Resize all non-hidden columns to the size of their contents"));
 161
 162     menu->popup(QCursor::pos());
 163 }
 164
 165 void PreviewSelectDialog::saveWindowState()
 166 {
 167     // Persist dialog size
 168     m_storeDialogSize = size();
 169     // Persist TreeView Header state
 170     m_storeTreeHeaderState = m_ui->previewList->header()->saveState();
 171 }
 172
 173 void PreviewSelectDialog::loadWindowState()
 174 {
 175     // Restore dialog size
 176     if (const QSize dialogSize = m_storeDialogSize; dialogSize.isValid())
 177         resize(dialogSize);
 178
 179     // Restore TreeView Header state
 180     if (const QByteArray treeHeaderState = m_storeTreeHeaderState; !treeHeaderState.isEmpty())
 181         m_headerStateInitialized = m_ui->previewList->header()->restoreState(treeHeaderState);
 182 }
 183
 184 void PreviewSelectDialog::showEvent(QShowEvent *event)
 185 {
 186     // event originated from system
 187     if (event->spontaneous())
 188     {
 189         QDialog::showEvent(event);
 190         return;
 191     }
 192
 193     // Default size, have to be called after show(), because width is needed
 194     // Set Name column width to 60% of TreeView
 195     if (!m_headerStateInitialized)
 196     {
 197         const int nameSize = (m_ui->previewList->size().width() * 0.6);
 198         m_ui->previewList->header()->resizeSection(0, nameSize);
 199         m_headerStateInitialized = true;
 200     }
 201
 202     // Only one file, no choice
 203     if (m_previewListModel->rowCount() <= 1)
 204         previewButtonClicked();
 205 }