File indexing completed on 2024-05-19 04:29:10

 /* This file is part of the KDE project
    SPDX-FileCopyrightText: 2012 Boudewijn Rempt <boud@valdyas.org>
 
    SPDX-License-Identifier: LGPL-2.0-or-later
 */
 
 #include "KisAutoSaveRecoveryDialog.h"
 
 #include <KoStore.h>
 
 #include <kwidgetitemdelegate.h>
 #include <klocalizedstring.h>
 #include <KisKineticScroller.h>
 
 #include <QVBoxLayout>
 #include <QHBoxLayout>
 #include <QListView>
 #include <QAbstractTableModel>
 #include <QLabel>
 #include <QDir>
 #include <QFileInfo>
 #include <QDateTime>
 #include <QImage>
 #include <QPixmap>
 #include <QHeaderView>
 #include <QStyledItemDelegate>
 #include <QStandardPaths>
 #include <QPainter>
 #include <QCheckBox>
 #include <kis_debug.h>
 
 
 struct FileItem {
 
     FileItem() : checked(true) {}
 
     QImage thumbnail;
     QString name;
     QString date;
     bool checked;
 };
 
 class FileItemDelegate : public KWidgetItemDelegate
 {
 public:
 
     FileItemDelegate(QAbstractItemView *itemView, KisAutoSaveRecoveryDialog *dlg)
         : KWidgetItemDelegate(itemView, dlg)
         , m_parent(dlg)
     {
     }
 
     QList<QWidget*> createItemWidgets(const QModelIndex& index) const override
     {
         // a lump of coal and a piece of elastic will get you through the world
         QWidget *page = new QWidget;
         QHBoxLayout *layout = new QHBoxLayout(page);
 
         QCheckBox *checkBox = new QCheckBox;
         checkBox->setProperty("fileitem", index.data());
 
         connect(checkBox, SIGNAL(toggled(bool)), m_parent, SLOT(toggleFileItem(bool)));
         QLabel *thumbnail = new QLabel;
         QLabel *filename = new QLabel;
         QLabel *dateModified = new QLabel;
 
         layout->addWidget(checkBox);
         layout->addWidget(thumbnail);
         layout->addWidget(filename);
         layout->addWidget(dateModified);
 
         page->setFixedSize(600, 200);
 
         return QList<QWidget*>() << page;
     }
 
     void updateItemWidgets(const QList<QWidget*> widgets,
                            const QStyleOptionViewItem &option,
                            const QPersistentModelIndex &index) const override
     {
         FileItem *fileItem = (FileItem*)index.data().value<void*>();
 
         QWidget* page= widgets[0];
         QHBoxLayout* layout = qobject_cast<QHBoxLayout*>(page->layout());
         QCheckBox *checkBox = qobject_cast<QCheckBox*>(layout->itemAt(0)->widget());
         QLabel *thumbnail = qobject_cast<QLabel*>(layout->itemAt(1)->widget());
         QLabel *filename = qobject_cast<QLabel*>(layout->itemAt(2)->widget());
         QLabel *modified = qobject_cast<QLabel*>(layout->itemAt(3)->widget());
 
         checkBox->setChecked(fileItem->checked);
         thumbnail->setPixmap(QPixmap::fromImage(fileItem->thumbnail));
         filename->setText(fileItem->name);
         modified->setText(fileItem->date);
 
         // move the page _up_ otherwise it will draw relative to the actual position
         page->setGeometry(option.rect.translated(0, -option.rect.y()));
     }
 
     void paint(QPainter *painter, const QStyleOptionViewItem &option, const QModelIndex &/*index*/) const override
     {
         //paint background for selected or hovered item
         QStyleOptionViewItem opt = option;
         itemView()->style()->drawPrimitive(QStyle::PE_PanelItemViewItem, &opt, painter, 0);
     }
 
     QSize sizeHint(const QStyleOptionViewItem&, const QModelIndex&) const override
     {
         return QSize(600, 200);
     }
 
 
     KisAutoSaveRecoveryDialog *m_parent;
 };
 
 class KisAutoSaveRecoveryDialog::FileItemModel : public QAbstractListModel
 {
 public:
     FileItemModel(QList<FileItem*> fileItems, QObject *parent)
         : QAbstractListModel(parent)
         , m_fileItems(fileItems){}
 
     ~FileItemModel() override
     {
         qDeleteAll(m_fileItems);
         m_fileItems.clear();
     }
 
     int rowCount(const QModelIndex &/*parent*/) const override { return m_fileItems.size(); }
 
     Qt::ItemFlags flags(const QModelIndex& /*index*/) const override
     {
         Qt::ItemFlags flags = Qt::ItemIsSelectable | Qt::ItemIsEnabled | Qt::ItemIsUserCheckable;
         return flags;
     }
 
     QVariant data(const QModelIndex& index, int role) const override
     {
         if (index.isValid() && index.row() < m_fileItems.size()) {
 
             FileItem *item = m_fileItems.at(index.row());
 
             switch (role) {
             case Qt::DisplayRole:
             {
                 return QVariant::fromValue<void*>((void*)item);
             }
             case Qt::SizeHintRole:
                 return QSize(600, 200);
             }
         }
         return QVariant();
     }
 
     bool setData(const QModelIndex& index, const QVariant& /*value*/, int role) override
     {
         if (index.isValid() && index.row() < m_fileItems.size()) {
             if (role == Qt::CheckStateRole) {
                 m_fileItems.at(index.row())->checked = !m_fileItems.at(index.row())->checked;
                 return true;
             }
         }
         return false;
     }
     QList<FileItem *> m_fileItems;
 };
 
 KisAutoSaveRecoveryDialog::KisAutoSaveRecoveryDialog(const QStringList &filenames, QWidget *parent) :
     KoDialog(parent)
 {
     setCaption(i18nc("@title:window", "Recover Files"));
     setButtons( KoDialog::Ok | KoDialog::Cancel | KoDialog::User1 );
     setButtonText(KoDialog::User1, i18n("Discard All"));
     setMinimumSize(650, 500);
     QWidget *page = new QWidget(this);
     QVBoxLayout *layout = new QVBoxLayout(page);
     if (filenames.size() == 1) {
         layout->addWidget(new QLabel(i18n("The following autosave file can be recovered:")));
     }
     else {
         layout->addWidget(new QLabel(i18n("The following autosave files can be recovered:")));
     }
 
     m_listView = new QListView();
     m_listView->setAcceptDrops(false);
     KWidgetItemDelegate *delegate = new FileItemDelegate(m_listView, this);
     m_listView->setItemDelegate(delegate);
 
     QList<FileItem*> fileItems;
     Q_FOREACH (const QString &filename, filenames) {
 
         FileItem *file = new FileItem();
         file->name = filename;
 
         QString path = autoSaveLocation() + "/" + filename;
         // get thumbnail -- almost all Krita-supported formats save a thumbnail
         KoStore* store = KoStore::createStore(path, KoStore::Read);
 
         if (store) {
             QString thumbnailPath = QLatin1String("Thumbnails/thumbnail.png");
             QString previewPath = QLatin1String("preview.png");
             bool thumbnailExists = store->hasFile(thumbnailPath);
             bool previewExists = store->hasFile(previewPath);
             QString pathToUse = thumbnailExists ? thumbnailPath : (previewExists ? previewPath : "");
 
             if (!pathToUse.isEmpty() && store->open(pathToUse)) {
                 // Hooray! No long delay for the user...
                 QByteArray bytes = store->read(store->size());
                 store->close();
                 QImage img;
                 img.loadFromData(bytes);
                 file->thumbnail = img.scaled(QSize(200,200), Qt::KeepAspectRatio, Qt::SmoothTransformation);
             }
 
             delete store;
         }
 
         // get the date
         QDateTime date = QFileInfo(path).lastModified();
         file->date = "(" + date.toString(Qt::LocalDate) + ")";
 
         fileItems.append(file);
     }
 
     m_model = new FileItemModel(fileItems, m_listView);
     m_listView->setModel(m_model);
     QScroller *scroller = KisKineticScroller::createPreconfiguredScroller(m_listView);
     if (scroller) {
         connect(scroller, &QScroller::stateChanged, this, [&](QScroller::State state) {
             KisKineticScroller::updateCursor(this, state);
         });
     }
 
     layout->addWidget(m_listView);
     layout->addWidget(new QLabel(i18n("If you select Cancel, all recoverable files will be kept.\nIf you press OK, selected files will be recovered, the unselected files discarded.")));
     setMainWidget(page);
     
     setAttribute(Qt::WA_DeleteOnClose, false);
     connect( this, SIGNAL(user1Clicked()), this, SLOT(slotDeleteAll()) );
 }
 
 KisAutoSaveRecoveryDialog::~KisAutoSaveRecoveryDialog()
 {
     delete m_listView->itemDelegate();
     delete m_model;
     delete m_listView;
 }
 
 void KisAutoSaveRecoveryDialog::slotDeleteAll()
 {
     foreach(FileItem* fileItem, m_model->m_fileItems) {
         fileItem->checked = false;
     }
     accept();
 }
 
 QStringList KisAutoSaveRecoveryDialog::recoverableFiles()
 {
     QStringList files;
     Q_FOREACH (FileItem* fileItem, m_model->m_fileItems) {
         if (fileItem->checked) {
             files << fileItem->name;
         }
     }
     return files;
 }
 
 QString KisAutoSaveRecoveryDialog::autoSaveLocation()
 {
 #if defined(Q_OS_WIN)
     // On Windows, use the temp location (https://bugs.kde.org/show_bug.cgi?id=314921)
     return QDir::tempPath();
 #elif defined(Q_OS_ANDROID)
     QString path = QStandardPaths::writableLocation(QStandardPaths::DocumentsLocation).append("/krita-backup");
     if (!QDir(path).exists()) {
         QDir().mkpath(path);
     }
     return path;
 #else
     // On Linux, use a temp file in $HOME then. Mark it with the pid so two instances don't overwrite each other's
     // autosave file
     return QDir::homePath();
 #endif
 }
 
 void KisAutoSaveRecoveryDialog::toggleFileItem(bool toggle)
 {
     // I've made better man from a piece of putty and matchstick!
     QVariant v = sender()->property("fileitem") ;
     if (v.isValid()) {
         FileItem *fileItem = (FileItem*)v.value<void*>();
         fileItem->checked = toggle;
     }
 }