File indexing completed on 2025-01-19 03:59:25

 /* ============================================================
  *
  * This file is a part of digiKam project
  * https://www.digikam.org
  *
  * Date        : 2012-06-13
  * Description : Qt item model for camera thumbnails entries
  *
  * SPDX-FileCopyrightText: 2012 by Islam Wazery <wazery at ubuntu dot com>
  *
  * SPDX-License-Identifier: GPL-2.0-or-later
  *
  * ============================================================ */
 
 #include "importthumbnailmodel.h"
 
 // Qt includes
 
 #include <QCache>
 #include <QReadWriteLock>
 
 // Local includes
 
 #include "digikam_debug.h"
 #include "cameracontroller.h"
 
 namespace Digikam
 {
 
 class Q_DECL_HIDDEN ImportThumbnailModel::Private
 {
 public:
 
     explicit Private()
       : thumbsCtrl         (nullptr),
         thumbSize          (0),
         lastGlobalThumbSize(0),
         emitDataChanged    (true)
     {
     }
 
     CameraThumbsCtrl* thumbsCtrl;
 
     ThumbnailSize     thumbSize;
     ThumbnailSize     lastGlobalThumbSize;
     bool              emitDataChanged;
 };
 
 ImportThumbnailModel::ImportThumbnailModel(QObject* const parent)
     : ImportItemModel(parent),
       d              (new Private)
 {
     setKeepsFileUrlCache(true);
 }
 
 ImportThumbnailModel::~ImportThumbnailModel()
 {
     delete d;
 }
 
 void ImportThumbnailModel::setCameraThumbsController(CameraThumbsCtrl* const thumbsCtrl)
 {
     d->thumbsCtrl = thumbsCtrl;
 
     connect(d->thumbsCtrl, SIGNAL(signalThumbInfoReady(CamItemInfo)),
             this, SLOT(slotThumbInfoReady(CamItemInfo)));
 
     ImportItemModel::setCameraThumbsController(d->thumbsCtrl);
 }
 
 ThumbnailSize ImportThumbnailModel::thumbnailSize() const
 {
     return d->thumbSize;
 }
 
 void ImportThumbnailModel::setEmitDataChanged(bool emitSignal)
 {
     d->emitDataChanged = emitSignal;
 }
 
 QVariant ImportThumbnailModel::data(const QModelIndex& index, int role) const
 {
     if (role == ThumbnailRole && d->thumbsCtrl && index.isValid())
     {
         CamItemInfo info = camItemInfo(index);
         QString     path = info.url().toLocalFile();
         CachedItem  item;
 
         // use mimetype thumbnail also if the mime is set to something else than to image
         // this is to avoid querying the device for previews with unsupported file formats
         // at least gphoto2 doesn't really like it and will error a lot and slow down
 
         bool thumbnailPossible = (info.previewPossible                                       ||
                                   d->thumbsCtrl->cameraController()->cameraThumbnailSupport());
 
         if (info.isNull() || path.isEmpty() || !thumbnailPossible)
         {
             return QVariant(d->thumbsCtrl->cameraController()->mimeTypeThumbnail(path).pixmap(d->thumbSize.size()));
         }
 
         if (d->thumbsCtrl->getThumbInfo(info, item))
         {
             return QVariant(item.second.scaled(d->thumbSize.size(), d->thumbSize.size(), Qt::KeepAspectRatio));
         }
 
         return QVariant(d->thumbsCtrl->cameraController()->mimeTypeThumbnail(path).pixmap(d->thumbSize.size()));
     }
 
     return ImportItemModel::data(index, role);
 }
 
 bool ImportThumbnailModel::setData(const QModelIndex& index, const QVariant& value, int role)
 {
     if (role == ThumbnailRole)
     {
 
 #if (QT_VERSION >= QT_VERSION_CHECK(6, 0, 0))
 
         switch (value.typeId())
 
 #else
 
         switch (value.type())
 
 #endif
 
         {
             case QVariant::Invalid:
             {
                 d->thumbSize  = d->lastGlobalThumbSize;
                 break;
             }
 
             case QVariant::Int:
             {
                 if (value.isNull())
                 {
                     d->thumbSize = d->lastGlobalThumbSize;
                 }
                 else
                 {
                     d->lastGlobalThumbSize = d->thumbSize;
                     d->thumbSize           = ThumbnailSize(value.toInt());
                 }
 
                 break;
             }
 
             default:
             {
                 break;
             }
         }
     }
 
     return ImportItemModel::setData(index, value, role);
 }
 
 void ImportThumbnailModel::slotThumbInfoReady(const CamItemInfo& info)
 {
     CachedItem  item;
     d->thumbsCtrl->getThumbInfo(info, item);
 
     // In case of multiple occurrence, we currently do not know which thumbnail is this. Signal change on all.
 
     Q_FOREACH (const QModelIndex& index, indexesForUrl(info.url()))
     {
         if (item.second.isNull())
         {
             Q_EMIT thumbnailFailed(index, d->thumbSize.size());
         }
         else
         {
             Q_EMIT thumbnailAvailable(index, d->thumbSize.size());
 
             if (d->emitDataChanged)
             {
                 Q_EMIT dataChanged(index, index);
             }
         }
     }
 }
 
 } // namespace Digikam
 
 #include "moc_importthumbnailmodel.cpp"