gallerythumbview.cpp

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// C++
#include <chrono> // for milliseconds
#include <thread> // for sleep_for
#include <utility>
 
// Qt
#include <QApplication>
 
// MythTV
#include "libmythbase/compat.h"
#include "libmythbase/mythsystemlegacy.h"
#include "libmythbase/remotefile.h"
#include "libmythui/mythdialogbox.h"
#include "libmythui/mythprogressdialog.h"
#include "libmythui/mythuiprogressbar.h"
#include "libmythui/mythuitext.h"
 
// MythFrontend
#include "galleryconfig.h"
#include "gallerythumbview.h"
 
#define LOC QString("Thumbview: ")
 
 
class ShellThread: public MThread
{
public:
    ShellThread(QString cmd, QString path)
        : MThread("Import"), m_command(std::move(cmd)), m_path(std::move(path)) {}
 
    int GetResult(void) const { return m_result; }
 
    void run() override // MThread
    {
        RunProlog();
 
        QString cmd = QString("cd %1 && %2").arg(m_path, m_command);
        LOG(VB_GENERAL, LOG_INFO, QString("Executing \"%1\"").arg(cmd));
 
        m_result = myth_system(cmd);
 
        LOG(VB_GENERAL, LOG_INFO, QString(" ...with result %1").arg(m_result));
 
        RunEpilog();
    }
 
private:
    int     m_result {0};
    QString m_command;
    QString m_path;
};
 
 
class TransferThread : public MThread
{
    Q_DECLARE_TR_FUNCTIONS(FileTransferWorker);
public:
    using TransferMap = QMap<ImagePtrK, QString>;
    using ImageSet = QSet<ImagePtrK>;
 
    TransferThread(TransferMap files, bool move, MythUIProgressDialog *dialog)
        : MThread("FileTransfer"),
          m_move(move), m_files(std::move(files)), m_dialog(dialog) {}
 
    ImageSet GetResult(void) { return m_failed; }
 
    void run() override // MThread
    {
        RunProlog();
 
        QString action = m_move ? tr("Moving") : tr("Copying");
 
        // Sum file sizes
        auto keys = m_files.keys();
        auto add_size = [](int t, const ImagePtrK & im){ return t + im->m_size; };
        int total = std::accumulate(keys.cbegin(), keys.cend(), 0, add_size);
 
        int progressSize = 0;
#if QT_VERSION < QT_VERSION_CHECK(5,15,0)
        for (auto it = m_files.constKeyValueBegin();
             it != m_files.constKeyValueEnd(); it++)
        {
            const ImagePtrK & im = (*it).first;
            QString newPath = (*it).second;
#else
        for (auto it = m_files.constKeyValueBegin();
             it != m_files.constKeyValueEnd(); it++)
        {
            const ImagePtrK & im = it->first;
            QString newPath = it->second;
#endif
            // Update progress dialog
            if (m_dialog)
            {
                QString message = QString("%1 %2\n%3")
                        .arg(action, QFileInfo(im->m_url).fileName(),
                             ImageAdapterBase::FormatSize(im->m_size / 1024));
 
                auto *pue = new ProgressUpdateEvent(progressSize, total, message);
                QApplication::postEvent(m_dialog, pue);
            }
 
            LOG(VB_FILE, LOG_INFO, QString("%2 %3 -> %4")
                .arg(action, im->m_url, newPath));
 
            bool success = m_move ? RemoteFile::MoveFile(im->m_url, newPath)
                                  : RemoteFile::CopyFile(im->m_url, newPath,
                                                         false, true);
            if (!success)
            {
                // Flag failures
                m_failed.insert(im);
 
                LOG(VB_GENERAL, LOG_ERR,
                    QString("%1: Failed to copy/move %2 -> %3")
                    .arg(objectName(), im->m_url, m_files[im]));
            }
 
            progressSize += im->m_size;
        }
 
        // Update progress dialog
        if (m_dialog)
        {
            auto *pue =
                    new ProgressUpdateEvent(progressSize, total, tr("Complete"));
            QApplication::postEvent(m_dialog, pue);
        }
 
        RunEpilog();
    }
 
private:
    bool                  m_move;   
    TransferMap           m_files;  
    ImageSet              m_failed; 
    MythUIProgressDialog *m_dialog; 
};
 
 
static void WaitUntilDone(MThread &worker)
{
    worker.start();
    while (!worker.isFinished())
    {
        std::this_thread::sleep_for(1ms);
        QCoreApplication::processEvents();
    }
}
 
 
GalleryThumbView::GalleryThumbView(MythScreenStack *parent, const char *name)
    : MythScreenType(parent, name),
      m_popupStack(*GetMythMainWindow()->GetStack("popup stack")),
      m_mgr(ImageManagerFe::getInstance()),
      // This screen uses a single fixed view (Parent dir, ordered dirs, ordered images)
      m_view(new DirectoryView(kOrdered)),
      m_infoList(*this),
      // Start in edit mode unless a password exists
      m_editsAllowed(gCoreContext->GetSetting("GalleryPassword").isEmpty())
{
    // Hide hidden when edits disallowed
    if (!m_editsAllowed)
        m_mgr.SetVisibility(false);
}
 
 
GalleryThumbView::~GalleryThumbView()
{
    LOG(VB_GUI, LOG_DEBUG, LOC + "Exiting Gallery");
    delete m_view;
}
 
 
void GalleryThumbView::Close()
{
    LOG(VB_GUI, LOG_DEBUG, LOC + "Closing Gallery");
 
    gCoreContext->removeListener(this);
 
    // Cleanup local devices
    m_mgr.CloseDevices();
 
    // Cleanup view
    m_view->Clear();
 
    MythScreenType::Close();
}
 
 
bool GalleryThumbView::Create()
{
    if (!LoadWindowFromXML("image-ui.xml", "gallery", this))
        return false;
 
    // Determine zoom levels supported by theme
    // images0 must exist; images1, images2 etc. are optional and enable zoom
    int               zoom = 0;
    MythUIButtonList *widget = nullptr;
    do
    {
        QString name = QString("images%1").arg(zoom++);
        widget = dynamic_cast<MythUIButtonList *>(this->GetChild(name));
        if (widget)
        {
            m_zoomWidgets.append(widget);
            widget->SetVisible(false);
        }
    }
    while (widget);
 
    if (m_zoomWidgets.isEmpty())
    {
        LOG(VB_GENERAL, LOG_ERR, LOC + "Screen 'Gallery' is missing 'images0'");
        return false;
    }
    LOG(VB_GUI, LOG_DEBUG, LOC + QString("Screen 'Gallery' found %1 zoom levels")
        .arg(m_zoomWidgets.size()));
 
    // File details list is managed elsewhere
    if (!m_infoList.Create(false))
    {
        LOG(VB_GENERAL, LOG_ERR, LOC + "Cannot load 'Info buttonlist'");
        return false;
    }
 
    UIUtilW::Assign(this, m_captionText,      "caption");
    UIUtilW::Assign(this, m_emptyText,        "noimages");
    UIUtilW::Assign(this, m_positionText,     "position");
    UIUtilW::Assign(this, m_crumbsText,       "breadcrumbs");
    UIUtilW::Assign(this, m_hideFilterText,   "hidefilter");
    UIUtilW::Assign(this, m_typeFilterText,   "typefilter");
    UIUtilW::Assign(this, m_scanProgressText, "scanprogresstext");
    UIUtilW::Assign(this, m_scanProgressBar,  "scanprogressbar");
 
    if (m_scanProgressText)
        m_scanProgressText->SetVisible(false);
    if (m_scanProgressBar)
        m_scanProgressBar->SetVisible(false);
 
    BuildFocusList();
 
    // Initialise list widget with appropriate zoom level for this theme.
    m_zoomLevel = gCoreContext->GetNumSetting("GalleryZoomLevel", 0);
    SelectZoomWidget(0);
 
    return true;
}
 
 
bool GalleryThumbView::keyPressEvent(QKeyEvent *event)
{
    if (GetFocusWidget()->keyPressEvent(event))
        return true;
 
    QStringList actions;
    bool handled = GetMythMainWindow()->TranslateKeyPress("Images", event, actions);
 
    for (int i = 0; i < actions.size() && !handled; i++)
    {
        QString action = actions[i];
        handled = true;
 
        if (action == "MENU")
            MenuMain();
        else if (action == "INFO")
            ShowDetails();
        else if (action == "ZOOMIN")
            ZoomIn();
        else if (action == "ZOOMOUT")
            ZoomOut();
        else if (action == "ROTRIGHT")
            RotateCW();
        else if (action == "ROTLEFT")
            RotateCCW();
        else if (action == "FLIPHORIZONTAL")
            FlipHorizontal();
        else if (action == "FLIPVERTICAL")
            FlipVertical();
        else if (action == "COVER")
        {
            ImagePtrK im = m_view->GetSelected();
            if (m_editsAllowed && im)
            {
                if (im == m_view->GetParent())
                {
                    // Reset dir
                    m_mgr.SetCover(im->m_id, 0);
                }
                else
                {
                    // Set parent cover
                    m_mgr.SetCover(im->m_parentId, im->m_id);
                }
            }
        }
        else if (action == "PLAY")
            Slideshow();
        else if (action == "RECURSIVESHOW")
        {
            ImagePtrK im = m_view->GetSelected();
            if (im && im->IsDirectory())
                RecursiveSlideshow();
        }
        else if (action == "MARK")
        {
            ImagePtrK im = m_view->GetSelected();
            if (m_editsAllowed && im && im != m_view->GetParent())
                DoMarkItem(!m_view->IsMarked(im->m_id));
        }
        else if (action == "ESCAPE" && !GetMythMainWindow()->IsExitingToMain())
        {
            // Exit info list, if shown
            handled = m_infoList.Hide();
 
            // Ascend the tree unless parent is root,
            // or a device and multiple devices/imports exist
            if (!handled)
            {
                ImagePtrK node = m_view->GetParent();
                if (node && node->m_id != GALLERY_DB_ID
                        && (!node->IsDevice() || m_mgr.DeviceCount() > 0))
                    handled = DirSelectUp();
            }
        }
        else
            handled = false;
    }
 
    if (!handled)
        handled = MythScreenType::keyPressEvent(event);
 
    return handled;
}
 
 
void GalleryThumbView::customEvent(QEvent *event)
{
 
    if (event->type() == MythEvent::MythEventMessage)
    {
        auto *me = dynamic_cast<MythEvent *>(event);
        if (me == nullptr)
            return;
 
        const QString& mesg  = me->Message();
        QStringList extra = me->ExtraDataList();
 
        // Internal messages contain a hostname. Ignore other FE messages
        QStringList token = mesg.split(' ');
        if (token.size() >= 2 && token[1] != gCoreContext->GetHostName())
            return;
 
        if (token[0] == "IMAGE_METADATA")
        {
            int id = extra[0].toInt();
            ImagePtrK selected = m_view->GetSelected();
 
            if (selected && selected->m_id == id)
                m_infoList.Display(*selected, extra.mid(1));
        }
        else if (token[0] == "THUMB_AVAILABLE")
        {
            int id = extra[0].toInt();
 
            // Note existance of all thumbs
            m_thumbExists.insert(id);
 
            // Get all buttons waiting for this thumbnail
            QList<ThumbLocation> affected = m_pendingMap.values(id);
 
            // Only concerned with thumbnails we've requested
            if (affected.isEmpty())
                return;
 
            LOG(VB_GENERAL, LOG_DEBUG, LOC +
                QString("Rx %1 : %2").arg(token[0], extra.join(",")));
 
            // Thumb url was cached when request was sent
            QString url = m_view->GetCachedThumbUrl(id);
 
            // Set thumbnail for each button now it exists
            for (const ThumbLocation & location : qAsConst(affected))
            {
                MythUIButtonListItem *button = location.first;
                int                   index  = location.second;
 
                auto im = button->GetData().value<ImagePtrK>();
                if (im)
                    UpdateThumbnail(button, im, url, index);
            }
 
            // Cancel pending request
            m_pendingMap.remove(id);
        }
        else if (token[0] == "IMAGE_DB_CHANGED")
        {
            // Expects csv list of deleted ids, csv list of changed ids
            LOG(VB_GENERAL, LOG_DEBUG, LOC +
                QString("Rx %1 : %2").arg(token[0], extra.join(",")));
 
            if (!extra.isEmpty())
            {
#if QT_VERSION < QT_VERSION_CHECK(5,14,0)
                QStringList idDeleted =
                        extra[0].split(",", QString::SkipEmptyParts);
#else
                QStringList idDeleted =
                        extra[0].split(",", Qt::SkipEmptyParts);
#endif
 
                RemoveImages(idDeleted);
            }
            if (extra.size() >= 2)
            {
#if QT_VERSION < QT_VERSION_CHECK(5,14,0)
                QStringList idChanged =
                        extra[1].split(",", QString::SkipEmptyParts);
#else
                QStringList idChanged =
                        extra[1].split(",", Qt::SkipEmptyParts);
#endif
                RemoveImages(idChanged, false);
            }
 
            // Refresh display
            LoadData(m_view->GetParentId());
        }
        else if (token[0] == "IMAGE_DEVICE_CHANGED")
        {
            // Expects list of url prefixes
            LOG(VB_GENERAL, LOG_DEBUG, LOC +
                QString("Rx %1 : %2").arg(token[0], extra.join(",")));
 
            // Clear everything. Local devices will be rebuilt
            m_view->Clear();
            m_thumbExists.clear();
 
            // Remove thumbs & images from image cache using supplied prefixes
            for (const QString & url : qAsConst(extra))
                GetMythUI()->RemoveFromCacheByFile(url);
 
            // Refresh display
            LoadData(m_view->GetParentId());
        }
        else if (token[0] == "IMAGE_SCAN_STATUS" && extra.size() == 3)
        {
            // Expects scanner id, scanned#, total#
            UpdateScanProgress(extra[0], extra[1].toInt(), extra[2].toInt());
        }
    }
    else if (event->type() == DialogCompletionEvent::kEventType)
    {
        auto *dce = (DialogCompletionEvent *)(event);
 
        QString resultid  = dce->GetId();
        int     buttonnum = dce->GetResult();
 
        if (resultid == "FileRename")
        {
            QString newName = dce->GetResultText();
            if (m_menuState.m_selected)
            {
                QString err = m_mgr.RenameFile(m_menuState.m_selected,
                                               newName);
                if (!err.isEmpty())
                    ShowOkPopup(err);
            }
        }
        else if (resultid == "MakeDir")
        {
            if (m_menuState.m_selected)
            {
                // Prohibit subtrees
                QString name = dce->GetResultText();
                QString err  = name.contains("/")
                        ? tr("Invalid Name")
                        : m_mgr.MakeDir(m_menuState.m_selected->m_id,
                                        QStringList(name));
                if (!err.isEmpty())
                    ShowOkPopup(err);
            }
        }
        else if (resultid == "SlideOrderMenu")
        {
            SlideOrderType slideOrder = kOrdered;
 
            switch (buttonnum)
            {
            case 0: slideOrder = kOrdered; break;
            case 1: slideOrder = kShuffle; break;
            case 2: slideOrder = kRandom; break;
            case 3: slideOrder = kSeasonal; break;
            }
            gCoreContext->SaveSetting("GallerySlideOrder", slideOrder);
            LOG(VB_FILE, LOG_DEBUG, LOC + QString("Order %1").arg(slideOrder));
        }
        else if (resultid == "ImageCaptionMenu")
        {
            ImageCaptionType captions = kNoCaption;
 
            switch (buttonnum)
            {
            case 0: captions = kNameCaption; break;
            case 1: captions = kDateCaption; break;
            case 2: captions = kUserCaption; break;
            case 3: captions = kNoCaption;   break;
            }
            gCoreContext->SaveSetting("GalleryImageCaption", captions);
            BuildImageList();
        }
        else if (resultid == "DirCaptionMenu")
        {
            ImageCaptionType captions = kNoCaption;
 
            switch (buttonnum)
            {
            case 0: captions = kNameCaption; break;
            case 1: captions = kDateCaption; break;
            case 2: captions = kNoCaption;   break;
            }
            gCoreContext->SaveSetting("GalleryDirCaption", captions);
            BuildImageList();
        }
        else if (resultid == "Password")
        {
            QString password = dce->GetResultText();
            m_editsAllowed = (password == gCoreContext->GetSetting("GalleryPassword"));
        }
        else if (buttonnum == 1)
        {
            // Confirm current file deletion
            QString err;
            if (resultid == "ConfirmDelete" && m_menuState.m_selected)
            {
                ImageIdList ids = ImageIdList() << m_menuState.m_selected->m_id;
                err = m_mgr.DeleteFiles(ids);
            }
            // Confirm marked file deletion
            else if (resultid == "ConfirmDeleteMarked")
            {
                err = m_mgr.DeleteFiles(m_menuState.m_markedId);
            }
            else
                return;
 
            if (!err.isEmpty())
                ShowOkPopup(err);
        }
    }
}
 
 
void GalleryThumbView::RemoveImages(const QStringList &ids, bool deleted)
{
    for (const QString & id : qAsConst(ids))
    {
        // Remove image from view
        QStringList urls = m_view->RemoveImage(id.toInt(), deleted);
        // Cleanup url lookup
        m_thumbExists.remove(id.toInt());
 
        // Remove thumbs & images from image cache
        for (const QString & url : qAsConst(urls))
        {
            LOG(VB_FILE, LOG_DEBUG, LOC +
                QString("Clearing image cache of '%1'").arg(url));
 
            GetMythUI()->RemoveFromCacheByFile(url);
        }
    }
}
 
 
void GalleryThumbView::Start()
{
    // Detect any running BE scans
    // Expects OK, scanner id, current#, total#
    QStringList message = ImageManagerFe::ScanQuery();
    if (message.size() == 4 && message[0] == "OK")
    {
        UpdateScanProgress(message[1], message[2].toInt(), message[3].toInt());
    }
 
    // Only receive events after device/scan status has been established
    gCoreContext->addListener(this);
 
    // Start at Root if devices exist. Otherwise go straight to SG node
    int start = m_mgr.DetectLocalDevices() ? GALLERY_DB_ID : PHOTO_DB_ID;
 
    LoadData(start);
}
 
 
void GalleryThumbView::LoadData(int parent)
{
    ResetUiSelection();
 
    // Load view for parent directory
    if (m_view->LoadFromDb(parent))
    {
        m_imageList->SetVisible(true);
        if (m_emptyText)
        {
            m_emptyText->SetVisible(false);
            m_emptyText->Reset();
        }
 
        // Construct the buttonlist
        BuildImageList();
    }
    else
    {
        m_infoList.Hide();
        m_imageList->SetVisible(false);
        if (m_emptyText)
        {
            m_emptyText->SetVisible(true);
            m_emptyText->SetText(tr("No images found.\n"
                                    "Scan storage group using menu,\n"
                                    "or insert/mount local media.\n"));
        }
    }
}
 
 
void GalleryThumbView::BuildImageList()
{
    m_imageList->Reset();
    m_pendingMap.clear();
 
    // Get parent & all children
    ImageListK nodes    = m_view->GetAllNodes();
    ImagePtrK  selected = m_view->GetSelected();
 
    // go through the entire list and update
    for (const ImagePtrK & im : qAsConst(nodes))
    {
        if (im)
        {
            // Data must be set by constructor: First item is automatically
            // selected and must have data available for selection event, as
            // subsequent reselection of same item will always fail.
            auto *item = new MythUIButtonListItem(m_imageList, "",
                                                  QVariant::fromValue(im));
 
            item->setCheckable(true);
            item->setChecked(MythUIButtonListItem::NotChecked);
 
            // assign and display all information about
            // the current item, like title and subdirectory count
            UpdateImageItem(item);
 
            // Treat parent differently
            if (im == nodes[0])
            {
                // Only non-root parents can ascend
                if (im->m_id != GALLERY_DB_ID)
                    item->DisplayState("upfolder", "parenttype");
            }
            else if (im == selected)
                // Reinstate the active button item. Note this would fail for parent
                m_imageList->SetItemCurrent(item);
        }
    }
}
 
 
void GalleryThumbView::UpdateImageItem(MythUIButtonListItem *item)
{
    auto im = item->GetData().value<ImagePtrK >();
    if (!im)
        return;
 
    // Allow themes to distinguish between roots, folders, pics, videos
    switch (im->m_type)
    {
    case kDevice:
    case kCloneDir:
    case kDirectory:
        if (im->m_dirCount > 0)
        {
            item->SetText(QString("%1/%2")
                          .arg(im->m_fileCount).arg(im->m_dirCount),
                          "childcount");
        }
        else
        {
            item->SetText(QString::number(im->m_fileCount), "childcount");
        }
 
        item->DisplayState(im->IsDevice() ? "device" : "subfolder", "buttontype");
        break;
 
    case kImageFile:
        item->DisplayState("image", "buttontype");
        break;
 
    case kVideoFile:
        item->DisplayState("video", "buttontype");
        break;
 
    default:
        break;
    }
 
    // Allow theme to distinguish visible/hidden nodes
    QString hideState = (im->m_isHidden) ? "hidden" : "visible";
    item->DisplayState(hideState, "buttonstate");
 
    // Caption
    QString text;
    int show = gCoreContext->GetNumSetting(
                im->IsFile() ? "GalleryImageCaption"
                             : "GalleryDirCaption");
    switch (show)
    {
    case kNameCaption: text = m_mgr.CrumbName(*im); break;
    case kDateCaption: text = m_mgr.ShortDateOf(im); break;
    case kUserCaption: text = im->m_comment; break;
    default:
    case kNoCaption:   text = ""; break;
    }
    item->SetText(text);
 
    // Set marked state
    MythUIButtonListItem::CheckState state
            = m_view->IsMarked(im->m_id)
            ? MythUIButtonListItem::FullChecked
            : MythUIButtonListItem::NotChecked;
 
    item->setChecked(state);
 
    // Thumbnails required
    ImageIdList request;
 
    if (im->m_thumbNails.size() == 1)
    {
        // Single thumbnail
        QString url = CheckThumbnail(item, im, request, 0);
 
        if (!url.isEmpty())
            UpdateThumbnail(item, im, url, 0);
    }
    else
    {
        // Dir showing up to 4 thumbs. Set them all at same time
        InfoMap thumbMap;
        for (int index = 0; index < im->m_thumbNails.size(); ++index)
        {
            QString url = CheckThumbnail(item, im, request, index);
            if (!url.isEmpty())
                thumbMap.insert(QString("thumbimage%1").arg(index), url);
        }
        if (!thumbMap.isEmpty())
            item->SetImageFromMap(thumbMap);
    }
 
    // Request creation/verification of unknown thumbnails.
    if (!request.isEmpty())
        m_mgr.CreateThumbnails(request, im->IsDirectory());
}
 
 
QString GalleryThumbView::CheckThumbnail(MythUIButtonListItem *item, const ImagePtrK& im,
                                         ImageIdList &request, int index)
{
    ThumbPair thumb(im->m_thumbNails.at(index));
    int id = thumb.first;
 
    if (m_thumbExists.contains(id))
        return thumb.second;
 
    // Request BE thumbnail check if it is not already pending
    if (!m_pendingMap.contains(id))
        request << id;
 
    // Note this button is awaiting an update
    m_pendingMap.insert(id, qMakePair(item, index));
 
    return "";
}
 
 
void GalleryThumbView::UpdateThumbnail(MythUIButtonListItem *button,
                                       const ImagePtrK& im, const QString &url,
                                       int index)
{
    if (im->m_thumbNails.size() == 1)
    {
        // Pics, dirs & videos use separate widgets
        switch (im->m_type)
        {
        case kImageFile: button->SetImage(url); break;
        case kVideoFile: button->SetImage(url, "videoimage"); break;
        default:         button->SetImage(url, "folderimage"); break;
        }
    }
    else
        // Dir with 4 thumbnails
        button->SetImage(url, QString("thumbimage%1").arg(index));
}
 
 
void GalleryThumbView::UpdateScanProgress(const QString &scanner,
                                          int current, int total)
{
    // Scan update
    m_scanProgress.insert(scanner, qMakePair(current, total));
 
    // Detect end of this scan
    if (current >= total)
    {
        LOG(VB_GUI, LOG_DEBUG, LOC + QString("Scan Finished %1 %2/%3")
            .arg(scanner).arg(current).arg(total));
 
        // Mark inactive scanner
        m_scanActive.remove(scanner);
 
        // Detect end of last scan
        if (m_scanActive.isEmpty())
        {
            if (m_scanProgressText)
            {
                m_scanProgressText->SetVisible(false);
                m_scanProgressText->Reset();
            }
            if (m_scanProgressBar)
            {
                m_scanProgressBar->SetVisible(false);
                m_scanProgressBar->Reset();
            }
 
            m_scanProgress.clear();
 
            return;
        }
    }
    else
    {
        // Detect first scan update
        if (m_scanActive.isEmpty())
        {
            // Show progressbar when first scan starts
            if (m_scanProgressBar)
            {
                m_scanProgressBar->SetVisible(true);
                m_scanProgressBar->SetStart(0);
            }
            if (m_scanProgressText)
                m_scanProgressText->SetVisible(true);
        }
 
        if (!m_scanActive.contains(scanner))
        {
            LOG(VB_GUI, LOG_DEBUG, LOC + QString("Scan Started %1 %2/%3")
                .arg(scanner).arg(current).arg(total));
 
            // Mark active scanner
            m_scanActive.insert(scanner);
        }
    }
 
    // Aggregate all running scans
    int currentAgg = 0;
    int totalAgg = 0;
    for (IntPair scan : qAsConst(m_scanProgress))
    {
        currentAgg += scan.first;
        totalAgg   += scan.second;
    }
 
    if (m_scanProgressBar)
    {
        m_scanProgressBar->SetUsed(currentAgg);
        m_scanProgressBar->SetTotal(totalAgg);
    }
    if (m_scanProgressText)
        m_scanProgressText->SetText(tr("%L1 of %L3").arg(currentAgg).arg(totalAgg));
}
 
 
void GalleryThumbView::ResetUiSelection()
{
    if (m_positionText)
        m_positionText->Reset();
 
    if (m_captionText)
        m_captionText->Reset();
 
    if (m_crumbsText)
        m_crumbsText->Reset();
 
    if (m_hideFilterText)
        m_hideFilterText->Reset();
 
    if (m_typeFilterText)
        m_typeFilterText->Reset();
}
 
 
void GalleryThumbView::SetUiSelection(MythUIButtonListItem *item)
{
    auto im = item->GetData().value<ImagePtrK >();
    if (im)
    {
        // update the position in the node list
        m_view->Select(im->m_id);
 
        // show the name/path of the image
        if (m_crumbsText)
            m_crumbsText->SetText(m_mgr.CrumbName(*im, true));
 
        if (m_captionText)
        {
            // show the date & comment of non-root nodes
            QStringList text;
            if (im->m_id != GALLERY_DB_ID)
            {
                if (im->IsFile() || im->IsDevice())
                    text << ImageManagerFe::LongDateOf(im);
 
                if (!im->m_comment.isEmpty())
                    text << im->m_comment;
            }
            m_captionText->SetText(text.join(" - "));
        }
 
        if (m_hideFilterText)
        {
            m_hideFilterText->SetText(m_mgr.GetVisibility() ? tr("Hidden") : "");
        }
 
        if (m_typeFilterText)
        {
            QString text = "";
            switch (m_mgr.GetType())
            {
            case kPicAndVideo : text = ""; break;
            case kPicOnly     : text = tr("Pictures"); break;
            case kVideoOnly   : text = tr("Videos"); break;
            }
            m_typeFilterText->SetText(text);
        }
 
        // show the position of the image
        if (m_positionText)
            m_positionText->SetText(m_view->GetPosition());
 
        // Update any file details information
        m_infoList.Update(im);
    }
}
 
 
void GalleryThumbView::MenuMain()
{
    // Create the main menu
    auto *menu = new MythMenu(tr("Gallery Options"), this, "mainmenu");
 
    // Menu options depend on the marked files and the current node
    m_menuState = m_view->GetMenuSubjects();
 
    if (m_menuState.m_selected)
    {
        if (m_editsAllowed)
        {
            MenuMarked(menu);
            MenuPaste(menu);
            MenuTransform(menu);
            MenuAction(menu);
        }
        MenuSlideshow(menu);
        MenuShow(menu);
        if (!m_editsAllowed)
            menu->AddItem(tr("Enable Edits"), &GalleryThumbView::ShowPassword);
    }
 
    // Depends on current status of backend scanner - string(number(isBackend()))
    if (m_scanActive.contains("1"))
        menu->AddItem(tr("Stop Scan"), &GalleryThumbView::StopScan);
    else
        menu->AddItem(tr("Scan Storage Group"), &GalleryThumbView::StartScan);
 
    menu->AddItem(tr("Settings"), &GalleryThumbView::ShowSettings);
 
    auto *popup = new MythDialogBox(menu, &m_popupStack, "menuPopup");
    if (popup->Create())
        m_popupStack.AddScreen(popup);
    else
        delete popup;
}
 
 
void GalleryThumbView::MenuMarked(MythMenu *mainMenu)
{
    ImagePtrK parent = m_view->GetParent();
 
    if (m_menuState.m_childCount == 0 || parent.isNull())
        return;
 
    QString   title = tr("%L1 marked").arg(m_menuState.m_markedId.size());
    auto *menu  = new MythMenu(title, this, "markmenu");
 
    // Mark/unmark selected
    if (m_menuState.m_selected->IsFile())
    {
        if (m_menuState.m_selectedMarked)
            menu->AddItem(tr("Unmark File"), &GalleryThumbView::UnmarkItem);
        else
            menu->AddItem(tr("Mark File"), &GalleryThumbView::MarkItem);
    }
    // Cannot mark/unmark parent dir from this level
    else if (!m_menuState.m_selected->IsDevice()
             && m_menuState.m_selected != parent)
    {
        if (m_menuState.m_selectedMarked)
            menu->AddItem(tr("Unmark Directory"), &GalleryThumbView::UnmarkItem);
        else
            menu->AddItem(tr("Mark Directory"), &GalleryThumbView::MarkItem);
    }
 
    if (parent->m_id != GALLERY_DB_ID)
    {
        // Mark All if unmarked files exist
        if (m_menuState.m_markedId.size() < m_menuState.m_childCount)
            menu->AddItem(tr("Mark All"), &GalleryThumbView::MarkAll);
 
        // Unmark All if marked files exist
        if (!m_menuState.m_markedId.isEmpty())
        {
            menu->AddItem(tr("Unmark All"), &GalleryThumbView::UnmarkAll);
            menu->AddItem(tr("Invert Marked"), &GalleryThumbView::MarkInvertAll);
        }
    }
 
    if (menu->IsEmpty())
        delete menu;
    else
        mainMenu->AddItem(tr("Mark"), nullptr, menu);
}
 
 
void GalleryThumbView::MenuPaste(MythMenu *mainMenu)
{
    // Can only copy/move into non-root dirs
    if (m_menuState.m_selected->IsDirectory()
            && m_menuState.m_selected->m_id != GALLERY_DB_ID)
    {
        // Operate on current marked files, if any
        ImageIdList files = m_menuState.m_markedId;
        if (files.isEmpty())
            files = m_menuState.m_prevMarkedId;
        if (files.isEmpty())
            return;
 
        QString title = tr("%L1 marked").arg(files.size());
 
        auto *menu = new MythMenu(title, this, "pastemenu");
 
        menu->AddItem(tr("Move Marked Into"), &GalleryThumbView::Move);
        menu->AddItem(tr("Copy Marked Into"), qOverload<>(&GalleryThumbView::Copy));
 
        mainMenu->AddItem(tr("Paste"), nullptr, menu);
    }
}
 
 
void GalleryThumbView::MenuTransform(MythMenu *mainMenu)
{
    // Operate on marked files, if any, otherwise selected node
    if (!m_menuState.m_markedId.isEmpty())
    {
        QString title = tr("%L1 marked").arg(m_menuState.m_markedId.size());
 
        auto *menu = new MythMenu(title, this, "");
 
        menu->AddItem(tr("Rotate Marked CW"), &GalleryThumbView::RotateCWMarked);
        menu->AddItem(tr("Rotate Marked CCW"), &GalleryThumbView::RotateCCWMarked);
        menu->AddItem(tr("Flip Marked Horizontal"), &GalleryThumbView::FlipHorizontalMarked);
        menu->AddItem(tr("Flip Marked Vertical"), &GalleryThumbView::FlipVerticalMarked);
        menu->AddItem(tr("Reset Marked to Exif"), &GalleryThumbView::ResetExifMarked);
 
        mainMenu->AddItem(tr("Transforms"), nullptr, menu);
    }
    else if (m_menuState.m_selected->IsFile())
    {
        auto *menu = new MythMenu(m_menuState.m_selected->m_baseName, this, "");
 
        menu->AddItem(tr("Rotate CW"), &GalleryThumbView::RotateCW);
        menu->AddItem(tr("Rotate CCW"), &GalleryThumbView::RotateCCW);
        menu->AddItem(tr("Flip Horizontal"), &GalleryThumbView::FlipHorizontal);
        menu->AddItem(tr("Flip Vertical"), &GalleryThumbView::FlipVertical);
        menu->AddItem(tr("Reset to Exif"), &GalleryThumbView::ResetExif);
 
        mainMenu->AddItem(tr("Transforms"), nullptr, menu);
    }
}
 
 
void GalleryThumbView::MenuAction(MythMenu *mainMenu)
{
    MythMenu *menu = nullptr;
    ImagePtrK selected = m_menuState.m_selected;
 
    // Operate on current marked files, if any
    if (!m_menuState.m_markedId.empty())
    {
        QString title = tr("%L1 marked").arg(m_menuState.m_markedId.size());
 
        menu = new MythMenu(title, this, "actionmenu");
 
        // Only offer Hide/Unhide if relevant
        if (m_menuState.m_unhiddenMarked)
            menu->AddItem(tr("Hide Marked"), &GalleryThumbView::HideMarked);
        if (m_menuState.m_hiddenMarked)
            menu->AddItem(tr("Unhide Marked"), &GalleryThumbView::UnhideMarked);
 
        menu->AddItem(tr("Delete Marked"), &GalleryThumbView::DeleteMarked);
    }
    else
    {
        // Operate on selected file/dir
        menu = new MythMenu(selected->m_baseName, this, "actionmenu");
 
        // Prohibit actions on devices and parent dirs
        if (!selected->IsDevice() && selected != m_view->GetParent())
        {
            if (selected->m_isHidden)
                menu->AddItem(tr("Unhide"), &GalleryThumbView::Unhide);
            else
                menu->AddItem(tr("Hide"), &GalleryThumbView::HideItem);
 
            menu->AddItem(tr("Use as Cover"), &GalleryThumbView::SetCover);
            menu->AddItem(tr("Delete"),       &GalleryThumbView::DeleteItem);
            menu->AddItem(tr("Rename"),       &GalleryThumbView::ShowRenameInput);
        }
        else if (selected->m_userThumbnail)
            menu->AddItem(tr("Reset Cover"), &GalleryThumbView::ResetCover);
    }
 
    // Can only mkdir in a non-root dir
    if (selected->IsDirectory()
            && selected->m_id != GALLERY_DB_ID)
        menu->AddItem(tr("Create Directory"), &GalleryThumbView::MakeDir);
 
    // Only show import command on root, when defined
    if (selected->m_id == GALLERY_DB_ID
            && !gCoreContext->GetSetting("GalleryImportCmd").isEmpty())
        menu->AddItem(tr("Import"), &GalleryThumbView::Import);
 
    // Only show eject when devices (excluding import) exist
    if (selected->IsDevice() && selected->IsLocal())
        menu->AddItem(tr("Eject media"), &GalleryThumbView::Eject);
 
    if (menu->IsEmpty())
        delete menu;
    else
        mainMenu->AddItem(tr("Actions"), nullptr, menu);
}
 
 
void GalleryThumbView::MenuSlideshow(MythMenu *mainMenu)
{
    int order = gCoreContext->GetNumSetting("GallerySlideOrder", kOrdered);
 
    QString ordering;
    switch (order)
    {
    case kShuffle  : ordering = tr("Shuffled"); break;
    case kRandom   : ordering = tr("Random"); break;
    case kSeasonal : ordering = tr("Seasonal"); break;
    default:
    case kOrdered  : ordering = tr("Ordered"); break;
    }
 
    auto *menu = new MythMenu(tr("Slideshow") + " (" + ordering + ")",
                              this, "SlideshowMenu");
 
    // Use selected dir or parent, if image selected
    if (m_menuState.m_selected->IsDirectory())
    {
        if (m_menuState.m_selected->m_fileCount > 0)
            menu->AddItem(tr("Directory"), &GalleryThumbView::Slideshow);
 
        if (m_menuState.m_selected->m_dirCount > 0)
            menu->AddItem(tr("Recursive"), &GalleryThumbView::RecursiveSlideshow);
    }
    else
        menu->AddItem(tr("Current Directory"), &GalleryThumbView::Slideshow);
 
    auto *orderMenu = new MythMenu(tr("Slideshow Order"), this, "SlideOrderMenu");
 
    orderMenu->AddItem(tr("Ordered"),  nullptr, nullptr, order == kOrdered);
    orderMenu->AddItem(tr("Shuffled"), nullptr, nullptr, order == kShuffle);
    orderMenu->AddItem(tr("Random"),   nullptr, nullptr, order == kRandom);
    orderMenu->AddItem(tr("Seasonal"), nullptr, nullptr, order == kSeasonal);
 
    menu->AddItem(tr("Change Order"), nullptr, orderMenu);
 
    if (gCoreContext->GetBoolSetting("GalleryRepeat", false))
        menu->AddItem(tr("Turn Repeat Off"), &GalleryThumbView::RepeatOff);
    else
        menu->AddItem(tr("Turn Repeat On"), &GalleryThumbView::RepeatOn);
 
    mainMenu->AddItem(tr("Slideshow"), nullptr, menu);
}
 
 
void GalleryThumbView::MenuShow(MythMenu *mainMenu)
{
    auto *menu = new MythMenu(tr("Show Options"), this, "showmenu");
 
    int type = m_mgr.GetType();
    if (type == kPicAndVideo)
    {
        menu->AddItem(tr("Hide Pictures"), &GalleryThumbView::HidePictures);
        menu->AddItem(tr("Hide Videos"), &GalleryThumbView::HideVideos);
    }
    else
        menu->AddItem(type == kPicOnly ? tr("Show Videos") : tr("Show Pictures"),
                      &GalleryThumbView::ShowType);
 
    int show = gCoreContext->GetNumSetting("GalleryImageCaption");
    auto *captionMenu = new MythMenu(tr("Image Captions"), this,
                                     "ImageCaptionMenu");
 
    captionMenu->AddItem(tr("Name"),    nullptr, nullptr, show == kNameCaption);
    captionMenu->AddItem(tr("Date"),    nullptr, nullptr, show == kDateCaption);
    captionMenu->AddItem(tr("Comment"), nullptr, nullptr, show == kUserCaption);
    captionMenu->AddItem(tr("None"),    nullptr, nullptr, show == kNoCaption);
 
    menu->AddItem(tr("Image Captions"), nullptr, captionMenu);
 
    show = gCoreContext->GetNumSetting("GalleryDirCaption");
    captionMenu = new MythMenu(tr("Directory Captions"), this, "DirCaptionMenu");
 
    captionMenu->AddItem(tr("Name"), nullptr, nullptr, show == kNameCaption);
    captionMenu->AddItem(tr("Date"), nullptr, nullptr, show == kDateCaption);
    captionMenu->AddItem(tr("None"), nullptr, nullptr, show == kNoCaption);
 
    menu->AddItem(tr("Directory Captions"), nullptr, captionMenu);
 
    if (m_editsAllowed)
    {
        if (m_mgr.GetVisibility())
            menu->AddItem(tr("Hide Hidden Items"), &GalleryThumbView::HideHidden);
        else
            menu->AddItem(tr("Show Hidden Items"), &GalleryThumbView::ShowHidden);
    }
 
    if (m_zoomLevel > 0)
        menu->AddItem(tr("Zoom Out"), &GalleryThumbView::ZoomOut);
    if (m_zoomLevel < m_zoomWidgets.size() - 1)
        menu->AddItem(tr("Zoom In"), &GalleryThumbView::ZoomIn);
 
    QString details = m_infoList.GetState() == kNoInfo
            ? tr("Show Details") : tr("Hide Details");
 
    menu->AddItem(details, &GalleryThumbView::ShowDetails);
 
    mainMenu->AddItem(tr("Show"), nullptr, menu);
}
 
 
void GalleryThumbView::SelectImage(int id)
{
    // Only update selection if image is currently displayed
    if (m_view->Select(id, -1))
        BuildImageList();
}
 
 
void GalleryThumbView::ItemClicked(MythUIButtonListItem *item)
{
    if (!item)
        return;
 
    auto im = item->GetData().value<ImagePtrK>();
    if (!im)
        return;
 
    switch (im->m_type)
    {
    case kDevice:
    case kCloneDir:
    case kDirectory:
        if (im == m_view->GetParent())
            DirSelectUp();
        else
            DirSelectDown();
        break;
 
    case kImageFile:
    case kVideoFile:
        StartSlideshow(kBrowseSlides); break;
    };
}
 
 
void GalleryThumbView::DoScanAction(bool start)
{
    QString err = m_mgr.ScanImagesAction(start);
    if (!err.isEmpty())
        ShowOkPopup(err);
}
 
 
void GalleryThumbView::StartSlideshow(ImageSlideShowType mode)
{
    ImagePtrK selected = m_view->GetSelected();
    if (!selected)
        return;
 
    MythScreenStack *mainStack = GetMythMainWindow()->GetMainStack();
    auto *slide = new GallerySlideView(mainStack, "galleryslideview",
                                       m_editsAllowed);
    if (slide->Create())
    {
        mainStack->AddScreen(slide);
 
        // Update selected item when slideshow exits
        connect(slide, &GallerySlideView::ImageSelected,
                this, &GalleryThumbView::SelectImage);
 
        if (selected->IsDirectory())
        {
            // Show selected dir
            slide->Start(mode, selected->m_id);
        }
        else
        {
            // Show current dir starting at selection
            slide->Start(mode, selected->m_parentId, selected->m_id);
        }
    }
    else
        delete slide;
}
 
 
bool GalleryThumbView::DirSelectUp()
{
    ImagePtrK im = m_view->GetParent();
    if (im)
    {
        LOG(VB_GUI, LOG_DEBUG, LOC +
            QString("Going up from %1").arg(im->m_filePath));
 
        // Select the upfolder in the higher dir
        m_view->Select(im->m_id);
 
        // Create tree rooted at parent of the kUpFolder directory node
        LoadData(im->m_parentId);
    }
    return true;
}
 
 
void GalleryThumbView::DirSelectDown()
{
    ImagePtrK im = m_view->GetSelected();
    if (im)
    {
        LOG(VB_GUI, LOG_DEBUG, LOC +
            QString("Going down to %1").arg(im->m_filePath));
 
        // Create tree rooted at selected item
        LoadData(im->m_id);
    }
}
 
 
void GalleryThumbView::DoMarkItem(bool mark)
{
    ImagePtrK im = m_view->GetSelected();
    if (im)
    {
        // Mark/unmark selected item
        m_view->Mark(im->m_id, mark);
 
        // Redisplay buttonlist as a parent dir may have been unmarked
        BuildImageList();
    }
}
 
 
void GalleryThumbView::DoMarkAll(bool mark)
{
    if (mark)
        m_view->MarkAll();
    else
        m_view->ClearMarked();
 
    // Redisplay buttonlist
    BuildImageList();
}
 
 
void GalleryThumbView::MarkInvertAll()
{
    m_view->InvertMarked();
 
    // Redisplay buttonlist
    BuildImageList();
}
 
 
void GalleryThumbView::TransformItem(ImageFileTransform transform)
{
    ImagePtrK im = m_view->GetSelected();
    if (im && m_editsAllowed)
    {
        ImageIdList ids;
        ids.append(im->m_id);
        QString err = m_mgr.ChangeOrientation(transform, ids);
        if (!err.isEmpty())
            ShowOkPopup(err);
    }
}
 
 
void GalleryThumbView::TransformMarked(ImageFileTransform transform)
{
    QString err = m_mgr.ChangeOrientation(transform, m_menuState.m_markedId);
    if (!err.isEmpty())
        ShowOkPopup(err);
}
 
 
void GalleryThumbView::DoHideItem(bool hide)
{
    if (m_menuState.m_selected)
    {
        ImageIdList ids;
        ids.append(m_menuState.m_selected->m_id);
 
        QString err = m_mgr.HideFiles(hide, ids);
        if (!err.isEmpty())
        {
            ShowOkPopup(err);
        }
        else if (hide && !m_mgr.GetVisibility())
        {
            // Unmark invisible file
            m_view->Mark(m_menuState.m_selected->m_id, false);
        }
    }
}
 
 
void GalleryThumbView::DoHideMarked(bool hide)
{
    QString err = m_mgr.HideFiles(hide, m_menuState.m_markedId);
    if (!err.isEmpty())
    {
        ShowOkPopup(err);
    }
    else if (hide && !m_mgr.GetVisibility())
    {
        // Unmark invisible files
        for (int id : qAsConst(m_menuState.m_markedId))
            m_view->Mark(id, false);
    }
}
 
 
void GalleryThumbView::DeleteItem()
{
    if (m_menuState.m_selected)
        ShowDialog(tr("Do you want to delete\n%1 ?")
                   .arg(m_menuState.m_selected->m_baseName), "ConfirmDelete");
}
 
 
void GalleryThumbView::DeleteMarked()
{
    ShowDialog(tr("Do you want to delete all marked files ?"),
               "ConfirmDeleteMarked");
}
 
 
void GalleryThumbView::ShowSettings()
{
    // Show settings dialog
    auto *config = new GallerySettings(m_editsAllowed);
    MythScreenStack *mainStack = GetMythMainWindow()->GetMainStack();
    auto *ssd = new StandardSettingDialog(mainStack, "gallerysettings", config);
    if (!ssd->Create())
    {
        delete ssd;
        return;
    }
 
    mainStack->AddScreen(ssd);
 
    // Effect setting changes when dialog saves on exit
 
    connect(config, &GallerySettings::ClearDbPressed,
            this,   &GalleryThumbView::ClearSgDb);
 
    connect(config, &GallerySettings::OrderChanged,
            this,   [this]()
    {
        // Update db view, reset cover cache & reload
        int sortIm  = gCoreContext->GetNumSetting("GalleryImageOrder");
        int sortDir = gCoreContext->GetNumSetting("GalleryDirOrder");
        m_mgr.SetSortOrder(sortIm, sortDir);
        m_view->ClearCache();
        LoadData(m_view->GetParentId());
    });
 
    connect(config, &GallerySettings::DateChanged,
            this,   [this]()
    {
        QString date = gCoreContext->GetSetting("GalleryDateFormat");
        m_mgr.SetDateFormat(date);
        BuildImageList();
    });
 
    connect(config, &GallerySettings::ExclusionsChanged,
            this,   [this]()
    {
        // Request rescan
        QString exclusions = gCoreContext->GetSetting("GalleryIgnoreFilter");
        m_view->ClearCache();
        ImageManagerFe::IgnoreDirs(exclusions);
    });
}
 
 
void GalleryThumbView::DoShowHidden(bool show)
{
    gCoreContext->SaveBoolSetting("GalleryShowHidden", show);
 
    // Update Db(s)
    m_mgr.SetVisibility(show);
 
    // Reset dir thumbnail cache
    m_view->ClearCache();;
 
    LoadData(m_view->GetParentId());
}
 
 
void GalleryThumbView::ShowDialog(const QString& msg, const QString& event)
{
    auto *popup = new MythConfirmationDialog(&m_popupStack, msg, true);
 
    if (popup->Create())
    {
        popup->SetReturnEvent(this, event);
        m_popupStack.AddScreen(popup);
    }
    else
        delete popup;
}
 
 
void GalleryThumbView::ShowRenameInput()
{
    if (m_menuState.m_selected)
    {
        QString base = QFileInfo(m_menuState.m_selected->m_baseName).completeBaseName();
        QString msg  = tr("Enter a new name:");
        auto *popup = new MythTextInputDialog(&m_popupStack, msg, FilterNone,
                                              false, base);
        if (popup->Create())
        {
            popup->SetReturnEvent(this, "FileRename");
            m_popupStack.AddScreen(popup);
        }
        else
            delete popup;
    }
}
 
 
void GalleryThumbView::ShowDetails()
{
    m_infoList.Toggle(m_view->GetSelected());
}
 
 
void GalleryThumbView::ShowPassword()
{
    QString msg = tr("Enter password:");
    auto *popup = new MythTextInputDialog(&m_popupStack, msg, FilterNone, true);
    if (popup->Create())
    {
        popup->SetReturnEvent(this, "Password");
        m_popupStack.AddScreen(popup);
    }
    else
        delete popup;
}
 
 
void GalleryThumbView::DoShowType(int type)
{
    gCoreContext->SaveSetting("GalleryShowType", type);
 
    // Update Db(s)
    m_mgr.SetType(type);
 
    // Reset dir thumbnail cache
    m_view->ClearCache();
 
    LoadData(m_view->GetParentId());
}
 
 
void GalleryThumbView::DoSetCover(bool reset)
{
    if (m_menuState.m_selected)
    {
        QString err = reset ? m_mgr.SetCover(m_menuState.m_selected->m_id, 0)
                            : m_mgr.SetCover(m_menuState.m_selected->m_parentId,
                                             m_menuState.m_selected->m_id);
        if (!err.isEmpty())
            ShowOkPopup(err);
    }
}
 
 
void GalleryThumbView::ZoomOut()
{
    SelectZoomWidget(-1);
    BuildImageList();
}
 
 
void GalleryThumbView::ZoomIn()
{
    SelectZoomWidget(1);
    BuildImageList();
}
 
 
void GalleryThumbView::SelectZoomWidget(int change)
{
    m_zoomLevel += change;
 
    // constrain to zoom levels supported by theme
    if (m_zoomLevel < 0)
        m_zoomLevel = 0;
    if (m_zoomLevel >= m_zoomWidgets.size())
        m_zoomLevel = m_zoomWidgets.size() - 1;
 
    // Store any requested change, but not constraining adjustments
    // Thus, changing to a theme with fewer zoom levels will not overwrite the
    // setting
    if (change != 0)
        gCoreContext->SaveSetting("GalleryZoomLevel", m_zoomLevel);
 
    // dump the current list widget
    if (m_imageList)
    {
        m_imageList->SetVisible(false);
        disconnect(m_imageList, nullptr, this, nullptr);
    }
 
    // initialise new list widget
    m_imageList = m_zoomWidgets.at(m_zoomLevel);
 
    m_imageList->SetVisible(true);
    SetFocusWidget(m_imageList);
 
    // Monitor list actions (after focus events have been ignored)
    connect(m_imageList, &MythUIButtonList::itemClicked,
            this, &GalleryThumbView::ItemClicked);
    connect(m_imageList, &MythUIButtonList::itemSelected,
            this, &GalleryThumbView::SetUiSelection);
}
 
 
void GalleryThumbView::MakeDir()
{
    auto *popup = new MythTextInputDialog(&m_popupStack,
                                          tr("Enter name of new directory"),
                                          FilterNone, false);
    if (popup->Create())
    {
        popup->SetReturnEvent(this, "MakeDir");
        m_popupStack.AddScreen(popup);
    }
    else
        delete popup;
}
 
 
void GalleryThumbView::Eject()
{
    ImagePtrK dir = m_menuState.m_selected;
    if (dir)
        m_mgr.CloseDevices(dir->m_device, true);
}
 
 
void GalleryThumbView::Copy(bool deleteAfter)
{
    // Destination must be a dir
    ImagePtrK destDir = m_menuState.m_selected;
    if (!destDir || destDir->IsFile())
        return;
 
    // Use current markings, if any. Otherwise use previous markings
    ImageIdList markedIds = m_menuState.m_markedId;
    if (markedIds.isEmpty())
    {
        markedIds = m_menuState.m_prevMarkedId;
        if (markedIds.isEmpty())
        {
            ShowOkPopup(tr("No files specified"));
            return;
        }
    }
 
    // Get all files/dirs in subtree(s). Only files are copied
    ImageList files;
    ImageList dirs;
    m_mgr.GetDescendants(markedIds, files, dirs);
 
    if (dirs.isEmpty() && files.isEmpty())
    {
        ShowOkPopup(tr("No images"));
        // Nothing to clean up
        return;
    }
 
    // Child dirs appear before their subdirs. If no dirs, images are all direct children
    ImagePtrK aChild = dirs.isEmpty() ? files[0] : dirs[0];
 
    // Determine parent path including trailing /
    int basePathSize = aChild->m_filePath.size() - aChild->m_baseName.size();
 
    // Update filepaths for Db & generate URLs for filesystem copy
    // Only copy files, destination dirs will be created automatically
    TransferThread::TransferMap transfers;
    for (const ImagePtr & im : qAsConst(files))
    {
        // Replace base path with destination path
        im->m_filePath = ImageManagerFe::ConstructPath(destDir->m_filePath,
                                             im->m_filePath.mid(basePathSize));
 
        transfers.insert(im, m_mgr.BuildTransferUrl(im->m_filePath,
                                                    destDir->IsLocal()));
    }
 
    // Create progress dialog
    MythScreenStack      *popupStack = GetMythMainWindow()->GetStack("popup stack");
    auto *progress = new MythUIProgressDialog(tr("Copying files"), popupStack,
                                              "copydialog");
    if (progress->Create())
        popupStack->AddScreen(progress, false);
    else
    {
        delete progress;
        progress = nullptr;
    }
 
    // Copy files in a servant thread
    TransferThread copy(transfers, false, progress);
    WaitUntilDone(copy);
    TransferThread::ImageSet failed = copy.GetResult();
 
    if (progress)
        progress->Close();
 
    if (!failed.isEmpty())
        ShowOkPopup(tr("Failed to copy %L1/%Ln file(s)", nullptr, transfers.size())
                    .arg(failed.size()));
 
    // Don't update Db for files that failed
    for (const ImagePtrK & im : qAsConst(failed))
        transfers.remove(im);
 
    ImageListK newImages = transfers.keys();
 
    // Include dirs
    QStringList dirPaths;
    for (const ImagePtr & im : qAsConst(dirs))
    {
        QString relPath = im->m_filePath.mid(basePathSize);
 
        dirPaths << relPath;
 
        // Replace base path with destination path
        im->m_filePath = ImageManagerFe::ConstructPath(destDir->m_filePath, relPath);
 
        // Append dirs so that hidden state & cover is preserved for new dirs
        // Pre-existing dirs will take precedance over these.
        newImages.append(im);
    }
 
    // Copy empty dirs as well (will fail for non-empty dirs)
    if (!dirPaths.isEmpty())
        m_mgr.MakeDir(destDir->m_id, dirPaths, false);
 
    if (!newImages.isEmpty())
    {
        // Update Db
        m_mgr.CreateImages(destDir->m_id, newImages);
 
        if (deleteAfter)
        {
            // Delete files/dirs that have been successfully copied
            // Will fail for dirs containing images that failed to copy
            ImageIdList ids;
            for (const ImagePtrK & im : qAsConst(newImages))
                ids << im->m_id;
 
            m_mgr.DeleteFiles(ids);
        }
    }
}
 
 
void GalleryThumbView::Move()
{
    // Destination must be a dir
    ImagePtrK destDir = m_menuState.m_selected;
    if (!destDir || destDir->IsFile())
        return;
 
    // Use current markings, if any. Otherwise use previous markings
    ImageIdList markedIds = m_menuState.m_markedId;
    if (markedIds.isEmpty())
    {
        markedIds = m_menuState.m_prevMarkedId;
        if (markedIds.isEmpty())
        {
            ShowOkPopup(tr("No files specified"));
            return;
        }
    }
 
    // Note UI mandates that transferees are either all local or all remote
    if (destDir->IsLocal() != ImageItem::IsLocalId(markedIds[0]))
    {
        // Moves between hosts require copy/delete
        Copy(true);
        return;
    }
 
    // Get marked images. Each file and dir will be renamed
    ImageList files;
    ImageList dirs;
    if (m_mgr.GetImages(markedIds, files, dirs) <= 0)
    {
        ShowOkPopup(tr("No images specified"));
        // Nothing to clean up
        return;
    }
    ImageList images = dirs + files;
 
    // Determine parent from first dir or pic
    ImagePtr aChild = images[0];
 
    // Determine parent path including trailing /
    // Note UI mandates that transferees all have same parent.
    int basePathSize = aChild->m_filePath.size() - aChild->m_baseName.size();
    QString parentPath = aChild->m_filePath.left(basePathSize);
 
    // Determine destination URLs
    TransferThread::TransferMap transfers;
    for (const QSharedPointer<ImageItem> & im : qAsConst(images))
    {
        // Replace base path with destination path
        QString newPath = ImageManagerFe::ConstructPath(destDir->m_filePath,
                                              im->m_filePath.mid(basePathSize));
 
        transfers.insert(im, m_mgr.BuildTransferUrl(newPath, aChild->IsLocal()));
    }
 
    // Create progress dialog
    MythScreenStack      *popupStack = GetMythMainWindow()->GetStack("popup stack");
    auto *progress = new MythUIProgressDialog(tr("Moving files"), popupStack,
                                              "movedialog");
 
    if (progress->Create())
        popupStack->AddScreen(progress, false);
    else
    {
        delete progress;
        progress = nullptr;
    }
 
    // Move files in a servant thread
    TransferThread move(transfers, true, progress);
    WaitUntilDone(move);
    TransferThread::ImageSet failed = move.GetResult();
 
    if (progress)
        progress->Close();
 
    if (!failed.isEmpty())
        ShowOkPopup(tr("Failed to move %L1/%Ln file(s)", nullptr, transfers.size())
                    .arg(failed.size()));
 
    // Don't update Db for files that failed
    for (const ImagePtrK & im : qAsConst(failed))
        transfers.remove(im);
 
    if (!transfers.isEmpty())
    {
        ImageListK moved = transfers.keys();
 
        // Unmark moved files
        for (const ImagePtrK & im : qAsConst(moved))
            m_view->Mark(im->m_id, false);
 
        // Update Db
        m_mgr.MoveDbImages(destDir, moved, parentPath);
    }
}
 
 
void GalleryThumbView::Import()
{
    QString path = m_mgr.CreateImport();
    if (path.isEmpty())
    {
        ShowOkPopup(tr("Failed to create temporary directory."));
        return;
    }
 
    // Replace placeholder in command
    QString cmd = gCoreContext->GetSetting("GalleryImportCmd");
    cmd.replace("%TMPDIR%", path);
 
    // Run command in a separate thread
    MythUIBusyDialog *busy =
            ShowBusyPopup(tr("Running Import command.\nPlease wait..."));
 
    ShellThread thread(cmd, path);
    WaitUntilDone(thread);
 
    if (busy)
        busy->Close();
 
    int error = thread.GetResult();
    if (error != 0)
        ShowOkPopup(tr("Import command failed.\nError: %1").arg(error));
 
    // Rescan local devices
    QString err = m_mgr.ScanImagesAction(true, true);
    if (!err.isEmpty())
        LOG(VB_GENERAL, LOG_ERR, LOC + err);
}