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 <QFile>
  32 #include <QHeaderView>
  33 #include <QMessageBox>
  34 #include <QPushButton>
  35 #include <QShowEvent>
  36 #include <QStandardItemModel>
  37 #include <QTableView>
  38
  39 #include "base/bittorrent/common.h"
  40 #include "base/bittorrent/torrent.h"
  41 #include "base/preferences.h"
  42 #include "base/utils/fs.h"
  43 #include "base/utils/misc.h"
  44 #include "previewlistdelegate.h"
  45 #include "ui_previewselectdialog.h"
  46 #include "utils.h"
  47
  48 #define SETTINGS_KEY(name) "PreviewSelectDialog/" name
  49
  50 PreviewSelectDialog::PreviewSelectDialog(QWidget *parent, const BitTorrent::Torrent *torrent)
  51     : QDialog(parent)
  52     , m_ui(new Ui::PreviewSelectDialog)
  53     , m_torrent(torrent)
  54     , m_storeDialogSize(SETTINGS_KEY("Size"))
  55     , m_storeTreeHeaderState(SETTINGS_KEY("HeaderState"))
  56 {
  57     m_ui->setupUi(this);
  58
  59     m_ui->label->setText(tr("The following files from torrent \"%1\" support previewing, please select one of them:")
  60         .arg(m_torrent->name()));
  61
  62     m_ui->buttonBox->button(QDialogButtonBox::Ok)->setText(tr("Preview"));
  63     connect(m_ui->buttonBox, &QDialogButtonBox::accepted, this, &PreviewSelectDialog::previewButtonClicked);
  64     connect(m_ui->buttonBox, &QDialogButtonBox::rejected, this, &QDialog::reject);
  65     connect(m_ui->previewList, &QAbstractItemView::doubleClicked, this, &PreviewSelectDialog::previewButtonClicked);
  66
  67     const Preferences *pref = Preferences::instance();
  68     // Preview list
  69     m_previewListModel = new QStandardItemModel(0, NB_COLUMNS, this);
  70     m_previewListModel->setHeaderData(NAME, Qt::Horizontal, tr("Name"));
  71     m_previewListModel->setHeaderData(SIZE, Qt::Horizontal, tr("Size"));
  72     m_previewListModel->setHeaderData(PROGRESS, Qt::Horizontal, tr("Progress"));
  73
  74     // This hack fixes reordering of first column with Qt5.
  75     // https://github.com/qtproject/qtbase/commit/e0fc088c0c8bc61dbcaf5928b24986cd61a22777
  76     QTableView unused;
  77     unused.setVerticalHeader(m_ui->previewList->header());
  78     m_ui->previewList->header()->setParent(m_ui->previewList);
  79     unused.setVerticalHeader(new QHeaderView(Qt::Horizontal));
  80
  81     m_ui->previewList->setModel(m_previewListModel);
  82     m_ui->previewList->hideColumn(FILE_INDEX);
  83     m_listDelegate = new PreviewListDelegate(this);
  84     m_ui->previewList->setItemDelegate(m_listDelegate);
  85     m_ui->previewList->setAlternatingRowColors(pref->useAlternatingRowColors());
  86     // Fill list in
  87     const QVector<qreal> fp = torrent->filesProgress();
  88     int nbFiles = torrent->filesCount();
  89     for (int i = 0; i < nbFiles; ++i)
  90     {
  91         QString fileName = torrent->fileName(i);
  92         if (fileName.endsWith(QB_EXT))
  93             fileName.chop(QB_EXT.length());
  94         if (Utils::Misc::isPreviewable(fileName))
  95         {
  96             int row = m_previewListModel->rowCount();
  97             m_previewListModel->insertRow(row);
  98             m_previewListModel->setData(m_previewListModel->index(row, NAME), fileName);
  99             m_previewListModel->setData(m_previewListModel->index(row, SIZE), torrent->fileSize(i));
 100             m_previewListModel->setData(m_previewListModel->index(row, PROGRESS), fp[i]);
 101             m_previewListModel->setData(m_previewListModel->index(row, FILE_INDEX), i);
 102         }
 103     }
 104
 105     m_previewListModel->sort(NAME);
 106     m_ui->previewList->header()->setSortIndicator(0, Qt::AscendingOrder);
 107     m_ui->previewList->selectionModel()->select(m_previewListModel->index(0, NAME), QItemSelectionModel::Select | QItemSelectionModel::Rows);
 108
 109     // Restore dialog state
 110     loadWindowState();
 111 }
 112
 113 PreviewSelectDialog::~PreviewSelectDialog()
 114 {
 115     saveWindowState();
 116
 117     delete m_ui;
 118 }
 119
 120 void PreviewSelectDialog::previewButtonClicked()
 121 {
 122     const QModelIndexList selectedIndexes = m_ui->previewList->selectionModel()->selectedRows(FILE_INDEX);
 123     if (selectedIndexes.isEmpty()) return;
 124
 125     // Flush data
 126     m_torrent->flushCache();
 127
 128     const QStringList absolutePaths = m_torrent->absoluteFilePaths();
 129     // Only one file should be selected
 130     const QString path = absolutePaths.at(selectedIndexes.at(0).data().toInt());
 131     // File
 132     if (!QFile::exists(path))
 133     {
 134         const bool isSingleFile = (m_previewListModel->rowCount() == 1);
 135         QWidget *parent = isSingleFile ? this->parentWidget() : this;
 136         QMessageBox::critical(parent, tr("Preview impossible")
 137             , tr("Sorry, we can't preview this file: \"%1\".").arg(Utils::Fs::toNativePath(path)));
 138         if (isSingleFile)
 139             reject();
 140         return;
 141     }
 142
 143     emit readyToPreviewFile(path);
 144     accept();
 145 }
 146
 147 void PreviewSelectDialog::saveWindowState()
 148 {
 149     // Persist dialog size
 150     m_storeDialogSize = size();
 151     // Persist TreeView Header state
 152     m_storeTreeHeaderState = m_ui->previewList->header()->saveState();
 153 }
 154
 155 void PreviewSelectDialog::loadWindowState()
 156 {
 157     // Restore dialog size
 158     Utils::Gui::resize(this, m_storeDialogSize);
 159
 160     // Restore TreeView Header state
 161     if (!m_storeTreeHeaderState.get().isEmpty())
 162     {
 163         m_headerStateInitialized = m_ui->previewList->header()->restoreState(m_storeTreeHeaderState);
 164     }
 165 }
 166
 167 void PreviewSelectDialog::showEvent(QShowEvent *event)
 168 {
 169     // event originated from system
 170     if (event->spontaneous())
 171     {
 172         QDialog::showEvent(event);
 173         return;
 174     }
 175
 176     // Default size, have to be called after show(), because width is needed
 177     // Set Name column width to 60% of TreeView
 178     if (!m_headerStateInitialized)
 179     {
 180         const int nameSize = (m_ui->previewList->size().width() * 0.6);
 181         m_ui->previewList->header()->resizeSection(0, nameSize);
 182         m_headerStateInitialized = true;
 183     }
 184
 185     // Only one file, no choice
 186     if (m_previewListModel->rowCount() <= 1)
 187         previewButtonClicked();
 188 }